Add an animated text example

Add a font rendering test
glyphy: Implement synthetic italic
2022-04-06 23:59:47 -04:00 · 2022-04-06 23:59:47 -04:00 · 2022-04-06 23:59:47 -04:00 · 2022-04-06 23:59:47 -04:00 · 2022-04-06 23:59:47 -04:00 · 2022-04-06 23:59:47 -04:00
340 changed files with 66512 additions and 23153 deletions
@@ -221,11 +221,11 @@ vs2017-x64:
  extends: .flatpak-defaults
  when: manual

-# Only build Flatpak bundles automatically on master
-.flatpak-master:
+# Only build Flatpak bundles automatically on main
+.flatpak-main:
  extends: .flatpak-defaults
  only:
-    - master
+    - main

 flatpak-manual:demo:
  extends: .flatpak-manual
@@ -233,8 +233,8 @@ flatpak-manual:demo:
  variables:
    APPID: org.gtk.Demo4

-flatpak-master:demo:
-  extends: .flatpak-master
+flatpak-main:demo:
+  extends: .flatpak-main
  needs: []
  variables:
    APPID: org.gtk.Demo4
@@ -245,8 +245,8 @@ flatpak-manual:widget-factory:
  variables:
    APPID: org.gtk.WidgetFactory4

-flatpak-master:widget-factory:
-  extends: .flatpak-master
+flatpak-main:widget-factory:
+  extends: .flatpak-main
  needs: []
  variables:
    APPID: org.gtk.WidgetFactory4
@@ -257,8 +257,8 @@ flatpak-manual:icon-browser:
  variables:
    APPID: org.gtk.IconBrowser4

-flatpak-master:icon-browser:
-  extends: .flatpak-master
+flatpak-main:icon-browser:
+  extends: .flatpak-main
  needs: []
  variables:
    APPID: org.gtk.IconBrowser4
@@ -268,18 +268,18 @@ flatpak-master:icon-browser:
 # https://gitlab.gnome.org/GNOME/Initiatives/-/wikis/DevOps-with-Flatpak
 nightly demo:
    extends: '.publish_nightly'
-    dependencies: ['flatpak-master:demo']
-    needs: ['flatpak-master:demo']
+    dependencies: ['flatpak-main:demo']
+    needs: ['flatpak-main:demo']

 nightly factory:
    extends: '.publish_nightly'
-    dependencies: ['flatpak-master:widget-factory']
-    needs: ['flatpak-master:widget-factory']
+    dependencies: ['flatpak-main:widget-factory']
+    needs: ['flatpak-main:widget-factory']

 nightly icon-browser:
    extends: '.publish_nightly'
-    dependencies: ['flatpak-master:icon-browser']
-    needs: ['flatpak-master:icon-browser']
+    dependencies: ['flatpak-main:icon-browser']
+    needs: ['flatpak-main:icon-browser']

 static-scan:
  image: $FEDORA_IMAGE
@@ -346,4 +346,4 @@ publish-docs:
    - "curl -X POST -F token=${PAGES_TRIGGER_TOKEN} -F ref=docs-gtk-org https://gitlab.gnome.org/api/v4/projects/665/trigger/pipeline"
  only:
    refs:
-      - master
+      - main
@@ -43,6 +43,6 @@ flatpak build-bundle \
        ${appid}

 # to be consumed by the nightly publish jobs
-if [[ $CI_COMMIT_BRANCH == master ]]; then
+if [[ $CI_COMMIT_BRANCH == main ]]; then
        tar cf repo.tar ${repodir}
 fi
@@ -268,7 +268,7 @@ aparser.add_argument('--job-id', metavar='ID',
                     default=None)
 aparser.add_argument('--branch', metavar='NAME',
                     help='Branch of the project being tested',
-                     default='master')
+                     default='main')
 aparser.add_argument('--output', metavar='FILE',
                     help='The output HTML file, stdout by default',
                     type=argparse.FileType('w', encoding='UTF-8'),
@@ -27,7 +27,7 @@ aparser.add_argument('--job-id', metavar='ID',
                     default='Unknown')
 aparser.add_argument('--branch', metavar='NAME',
                     help='Branch of the project being tested',
-                     default='master')
+                     default='main')
 aparser.add_argument('--output', metavar='FILE',
                     help='The output file, stdout by default',
                     type=argparse.FileType('w', encoding='UTF-8'),
@@ -2,7 +2,7 @@

 set -e

-# We need to add a new remote for the upstream master, since this script could
+# We need to add a new remote for the upstream main, since this script could
 # be running in a personal fork of the repository which has out of date branches.
 if [ "${CI_PROJECT_NAMESPACE}" != "GNOME" ]; then
    echo "Retrieving the current upstream repository from ${CI_PROJECT_NAMESPACE}/${CI_PROJECT_NAME}..."
@@ -16,7 +16,7 @@ fi

 # Work out the newest common ancestor between the detached HEAD that this CI job
 # has checked out, and the upstream target branch (which will typically be
-# `upstream/master` or `upstream/gtk-3-24`).
+# `upstream/main` or `upstream/gtk-3-24`).
 #
 # `${CI_MERGE_REQUEST_TARGET_BRANCH_NAME}` is only defined if we’re running in
 # a merge request pipeline; fall back to `${CI_DEFAULT_BRANCH}` otherwise.
@@ -36,7 +36,7 @@ exit_status=$?
 echo ""
 echo "Note that clang-format output is advisory and cannot always match the"
 echo "GTK coding style, documented at:"
-echo "   https://gitlab.gnome.org/GNOME/gtk/blob/master/docs/CODING-STYLE"
+echo "   https://gitlab.gnome.org/GNOME/gtk/blob/main/docs/CODING-STYLE"
 echo "Warnings from this tool can be ignored in favour of the documented "
 echo "coding style, or in favour of matching the style of existing"
 echo "surrounding code."
@@ -48,7 +48,7 @@ if ! pkg-config --atleast-version=2.66.0 glib-2.0; then
 fi
 pkg-config --modversion glib-2.0

-if ! pkg-config --atleast-version=1.49.3 pango; then
+if ! pkg-config --atleast-version=1.50.0 pango; then
    git clone https://gitlab.gnome.org/GNOME/pango.git _pango
    meson setup _pango_build _pango
    meson compile -C _pango_build
@@ -1,7 +1,7 @@
 <!--
  Please, read the CONTRIBUTING.md guide on how to file a new issue.

-  https://gitlab.gnome.org/GNOME/gtk/-/blob/master/CONTRIBUTING.md
+  https://gitlab.gnome.org/GNOME/gtk/-/blob/main/CONTRIBUTING.md
 -->
 ## Steps to reproduce
 <!--
@@ -1,7 +1,7 @@
 <!--
  Please, read the CONTRIBUTING.md guide on how to file a new issue.

-  https://gitlab.gnome.org/GNOME/gtk/-/blob/master/CONTRIBUTING.md
+  https://gitlab.gnome.org/GNOME/gtk/-/blob/main/CONTRIBUTING.md
 -->

 ## Steps to reproduce
@@ -256,7 +256,7 @@ people committing to GTK to follow a few rules:
 0. Always write a meaningful commit message. Changes without a sufficient
   commit message will be reverted.

-0. Never push to the `master` branch, or any stable branches, directly; you
+0. Never push to the `main` branch, or any stable branches, directly; you
   should always go through a merge request, to ensure that the code is
   tested on the CI infrastructure at the very least. A merge request is
   also the proper place to get a comprehensive code review from the core
@@ -1,3 +1,8 @@
+Overview of Changes
+===================
+
+* Rename git `master` branch to `main`
+
 Overview of Changes in 4.5.0
 ============================

@@ -1,7 +1,7 @@
 GTK — The GTK toolkit
 =====================

-[![Build status](https://gitlab.gnome.org/GNOME/gtk/badges/master/pipeline.svg)](https://gitlab.gnome.org/GNOME/gtk/-/commits/master)
+[![Build status](https://gitlab.gnome.org/GNOME/gtk/badges/main/pipeline.svg)](https://gitlab.gnome.org/GNOME/gtk/-/commits/main)

 General information
 -------------------
@@ -40,7 +40,7 @@ Nightly documentation can be found at

 Nightly flatpaks of our demos can be installed from the
 [GNOME Nightly](https://wiki.gnome.org/Apps/Nightly) repository:
-  - `flatpak remote-add --if-not-exists gnome-nightly https://nightly.gnome.org/gnome-nightly.flatpakrepo` 
+  - `flatpak remote-add --if-not-exists gnome-nightly https://nightly.gnome.org/gnome-nightly.flatpakrepo`
  - `flatpak install gnome-nightly org.gtk.Demo4`
  - `flatpak install gnome-nightly org.gtk.WidgetFactory4`
  - `flatpak install gnome-nightly org.gtk.IconBrowser4`
@@ -116,6 +116,20 @@ docs/reference/gtk/html/gtk-building.html

 Or [online](https://docs.gtk.org/gtk4/building.html)

+Default branch renamed to `main`
+--------------------------------
+
+The default development branch of GTK has been renamed to `main`.
+To update your local checkout, use:
+```sh
+git checkout master
+git branch -m master main
+git fetch
+git branch --unset-upstream
+git branch -u origin/main
+git symbolic-ref refs/remotes/origin/HEAD refs/remotes/origin/main
+```
+
 How to report bugs
 ------------------

@@ -164,6 +164,21 @@
                }
            ]
        },
+        {
+            "name" : "pango",
+            "buildsystem" : "meson",
+            "builddir" : true,
+            "config-opts" : [
+                "--libdir=/app/lib"
+            ],
+            "sources" : [
+                {
+                    "type" : "git",
+                    "url" : "https://gitlab.gnome.org/GNOME/pango.git",
+                    "branch" : "main"
+                }
+            ]
+        },
        {
            "name" : "gtk",
            "buildsystem" : "meson",
@@ -177,7 +192,8 @@
            "sources" : [
                {
                    "type" : "git",
-                    "url" : "https://gitlab.gnome.org/GNOME/gtk.git"
+                    "url" : "https://gitlab.gnome.org/GNOME/gtk.git",
+                    "branch" : "main"
                }
            ]
        }
@@ -93,6 +93,21 @@
                }
            ]
        },
+        {
+            "name" : "pango",
+            "buildsystem" : "meson",
+            "builddir" : true,
+            "config-opts" : [
+                "--libdir=/app/lib"
+            ],
+            "sources" : [
+                {
+                    "type" : "git",
+                    "url" : "https://gitlab.gnome.org/GNOME/pango.git",
+                    "branch" : "main"
+                }
+            ]
+        },
        {
            "name" : "gtk",
            "buildsystem" : "meson",
@@ -106,7 +121,8 @@
            "sources" : [
                {
                    "type" : "git",
-                    "url" : "https://gitlab.gnome.org/GNOME/gtk.git"
+                    "url" : "https://gitlab.gnome.org/GNOME/gtk.git",
+                    "branch" : "main"
                }
            ]
        }
@@ -93,6 +93,21 @@
                }
            ]
        },
+        {
+            "name" : "pango",
+            "buildsystem" : "meson",
+            "builddir" : true,
+            "config-opts" : [
+                "--libdir=/app/lib"
+            ],
+            "sources" : [
+                {
+                    "type" : "git",
+                    "url" : "https://gitlab.gnome.org/GNOME/pango.git",
+                    "branch" : "main"
+                }
+            ]
+        },
        {
            "name" : "gtk",
            "buildsystem" : "meson",
@@ -106,7 +121,8 @@
            "sources" : [
                {
                    "type" : "git",
-                    "url" : "https://gitlab.gnome.org/GNOME/gtk.git"
+                    "url" : "https://gitlab.gnome.org/GNOME/gtk.git",
+                    "branch" : "main"
                }
            ]
        }
@@ -24,6 +24,7 @@ do_cursors (GtkWidget *do_widget)

      builder = gtk_builder_new_from_resource ("/cursors/cursors.ui");
      window = GTK_WIDGET (gtk_builder_get_object (builder, "window"));
+      g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window);
      gtk_window_set_display (GTK_WINDOW (window),
                              gtk_widget_get_display (do_widget));
      g_signal_connect (window, "destroy",
@@ -34,9 +35,7 @@ do_cursors (GtkWidget *do_widget)
  if (!gtk_widget_get_visible (window))
    gtk_widget_show (window);
  else
-    {
-      gtk_window_destroy (GTK_WINDOW (window));
-    }
+    gtk_window_destroy (GTK_WINDOW (window));

  return window;
 }
@@ -0,0 +1,36 @@
+#pragma once
+
+#include <gtk/gtk.h>
+
+G_BEGIN_DECLS
+
+#define CURVE_TYPE_EDITOR (curve_editor_get_type ())
+G_DECLARE_FINAL_TYPE (CurveEditor, curve_editor, CURVE, EDITOR, GtkWidget)
+
+GtkWidget *       curve_editor_new              (void);
+
+void              curve_editor_set_edit         (CurveEditor *self,
+                                                 gboolean     edit);
+
+void              curve_editor_set_path         (CurveEditor *self,
+                                                 GskPath     *path);
+
+GskPath *         curve_editor_get_path         (CurveEditor *self);
+
+void              curve_editor_set_stroke       (CurveEditor *self,
+                                                 GskStroke   *stroke);
+
+const GskStroke * curve_editor_get_stroke       (CurveEditor *self);
+
+
+void              curve_editor_set_color        (CurveEditor *self,
+                                                 GdkRGBA     *color);
+
+const GdkRGBA *   curve_editor_get_color        (CurveEditor *self);
+
+gboolean          curve_editor_get_show_outline (CurveEditor *self);
+
+void              curve_editor_set_show_outline (CurveEditor *self,
+                                                 gboolean     show_outline);
+
+G_END_DECLS
@@ -0,0 +1,272 @@
+/* Path/Curve Editor
+ *
+ * This demo shows an elaborate curve editor that you would expect to find
+ * in a vector graphics editor. It is built on top of GTK's path APIs.
+ */
+
+#include <gtk/gtk.h>
+#include "curve-editor.h"
+
+
+static GskPath *
+make_circle_path (void)
+{
+  float w = 310;
+  float h = 310;
+  float cx = w / 2;
+  float cy = h / 2;
+  float pad = 20;
+  float r = (w - 2 * pad) / 2;
+  float k = 0.55228;
+  float kr = k  * r;
+  GskPathBuilder *builder;
+
+  builder = gsk_path_builder_new ();
+
+  gsk_path_builder_move_to (builder,  cx, pad);
+  gsk_path_builder_curve_to (builder, cx + kr, pad,
+                                      w - pad, cy - kr,
+                                      w - pad, cy);
+  gsk_path_builder_curve_to (builder, w - pad, cy + kr,
+                                      cx + kr, h - pad,
+                                      cx, h - pad);
+  gsk_path_builder_curve_to (builder, cx - kr, h - pad,
+                                      pad, cy + kr,
+                                      pad, cy);
+  gsk_path_builder_curve_to (builder, pad, cy - kr,
+                                      cx - kr, pad,
+                                      cx, pad);
+  gsk_path_builder_close (builder);
+
+  return gsk_path_builder_free_to_path (builder);
+}
+
+static void
+edit_changed (GtkToggleButton *button,
+              GParamSpec      *pspec,
+              CurveEditor     *editor)
+{
+  curve_editor_set_edit (editor, gtk_toggle_button_get_active (button));
+}
+
+static void
+reset (GtkButton   *button,
+       CurveEditor *editor)
+{
+  GskPath *path;
+
+  path = make_circle_path ();
+  curve_editor_set_path (editor, path);
+  gsk_path_unref (path);
+}
+
+static void
+line_width_changed (GtkSpinButton *spin,
+                    CurveEditor   *editor)
+{
+  GskStroke *stroke;
+
+  stroke = gsk_stroke_copy (curve_editor_get_stroke (editor));
+  gsk_stroke_set_line_width (stroke, gtk_spin_button_get_value (spin));
+  curve_editor_set_stroke (editor, stroke);
+  gsk_stroke_free (stroke);
+}
+
+static void
+cap_changed (GtkDropDown *combo,
+             GParamSpec  *pspec,
+             CurveEditor *editor)
+{
+  GskStroke *stroke;
+
+  stroke = gsk_stroke_copy (curve_editor_get_stroke (editor));
+  gsk_stroke_set_line_cap (stroke, (GskLineCap)gtk_drop_down_get_selected (combo));
+  curve_editor_set_stroke (editor, stroke);
+  gsk_stroke_free (stroke);
+}
+
+static void
+join_changed (GtkDropDown *combo,
+              GParamSpec  *pspec,
+              CurveEditor *editor)
+{
+  GskStroke *stroke;
+
+  stroke = gsk_stroke_copy (curve_editor_get_stroke (editor));
+  gsk_stroke_set_line_join (stroke, (GskLineJoin)gtk_drop_down_get_selected (combo));
+  curve_editor_set_stroke (editor, stroke);
+  gsk_stroke_free (stroke);
+}
+
+static void
+color_changed (GtkColorChooser *chooser,
+               GParamSpec      *pspec,
+               CurveEditor     *editor)
+{
+  GdkRGBA color;
+
+  gtk_color_chooser_get_rgba (chooser, &color);
+  curve_editor_set_color (editor, &color);
+}
+
+static void
+stroke_toggled (GtkCheckButton *button,
+                CurveEditor    *editor)
+{
+  curve_editor_set_show_outline (editor, gtk_check_button_get_active (button));
+  gtk_widget_queue_draw (GTK_WIDGET (editor));
+}
+
+static void
+limit_changed (GtkSpinButton *spin,
+               CurveEditor   *editor)
+{
+  GskStroke *stroke;
+
+  stroke = gsk_stroke_copy (curve_editor_get_stroke (editor));
+  gsk_stroke_set_miter_limit (stroke, gtk_spin_button_get_value (spin));
+  curve_editor_set_stroke (editor, stroke);
+  gsk_stroke_free (stroke);
+}
+
+static void
+dashes_changed (GtkEntry    *entry,
+                GParamSpec  *spec,
+                CurveEditor *editor)
+{
+  const char *text;
+  char **split;
+  GArray *dash;
+  GskStroke *stroke;
+
+  text = gtk_editable_get_text (GTK_EDITABLE (entry));
+  split = g_strsplit (text, " ", 0);
+
+  dash = g_array_new (FALSE, FALSE, sizeof (float));
+  for (int i = 0; split[i] != NULL; i++)
+    {
+      double d;
+      char *endp = 0;
+
+      d = g_strtod (split[i], &endp);
+      if (*endp == '\0')
+        g_array_append_vals (dash, (float[1]) { d }, 1);
+    }
+
+  g_strfreev (split);
+
+  stroke = gsk_stroke_copy (curve_editor_get_stroke (editor));
+  gsk_stroke_set_dash (stroke, (const float *)dash->data, dash->len);
+  curve_editor_set_stroke (editor, stroke);
+  gsk_stroke_free (stroke);
+
+  g_array_free (dash, TRUE);
+}
+
+GtkWidget *
+do_curve (GtkWidget *do_widget)
+{
+  static GtkWidget *window = NULL;
+  GtkWidget *demo;
+  GtkWidget *edit_toggle;
+  GtkWidget *reset_button;
+  GtkWidget *titlebar;
+  GtkWidget *stroke_toggle;
+  GtkWidget *line_width_spin;
+  GtkWidget *stroke_button;
+  GtkWidget *popover;
+  GtkWidget *grid;
+  GtkWidget *cap_combo;
+  GtkWidget *join_combo;
+  GtkWidget *color_button;
+  GtkWidget *limit_spin;
+  GtkWidget *dash_entry;
+
+  if (!window)
+    {
+      window = gtk_window_new ();
+      gtk_window_set_title (GTK_WINDOW (window), "Curve Editor");
+      g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window);
+      gtk_window_set_default_size (GTK_WINDOW (window), 310, 350);
+
+      edit_toggle = gtk_toggle_button_new ();
+      gtk_button_set_icon_name (GTK_BUTTON (edit_toggle), "document-edit-symbolic");
+
+      reset_button = gtk_button_new_from_icon_name ("edit-undo-symbolic");
+
+      stroke_button = gtk_menu_button_new ();
+      gtk_menu_button_set_icon_name (GTK_MENU_BUTTON (stroke_button), "open-menu-symbolic");
+      popover = gtk_popover_new ();
+      gtk_menu_button_set_popover (GTK_MENU_BUTTON (stroke_button), popover);
+
+      grid = gtk_grid_new ();
+      gtk_grid_set_row_spacing (GTK_GRID (grid), 6);
+      gtk_grid_set_column_spacing (GTK_GRID (grid), 6);
+      gtk_popover_set_child (GTK_POPOVER (popover), grid);
+
+      gtk_grid_attach (GTK_GRID (grid), gtk_label_new ("Color:"), 0, 0, 1, 1);
+      color_button = gtk_color_button_new_with_rgba (&(GdkRGBA){ 0., 0., 0., 1.});
+      gtk_grid_attach (GTK_GRID (grid), color_button, 1, 0, 1, 1);
+
+      gtk_grid_attach (GTK_GRID (grid), gtk_label_new ("Line width:"), 0, 1, 1, 1);
+      line_width_spin = gtk_spin_button_new_with_range (1, 20, 1);
+      gtk_spin_button_set_value (GTK_SPIN_BUTTON (line_width_spin), 1);
+      gtk_grid_attach (GTK_GRID (grid), line_width_spin, 1, 1, 1, 1);
+
+      gtk_grid_attach (GTK_GRID (grid), gtk_label_new ("Line cap:"), 0, 2, 1, 1);
+      cap_combo = gtk_drop_down_new_from_strings ((const char *[]){"Butt", "Round", "Square", NULL});
+      gtk_grid_attach (GTK_GRID (grid), cap_combo, 1, 2, 1, 1);
+
+      gtk_grid_attach (GTK_GRID (grid), gtk_label_new ("Line join:"), 0, 3, 1, 1);
+      join_combo = gtk_drop_down_new_from_strings ((const char *[]){"Miter", "Miter-clip", "Round", "Bevel", "Arcs", NULL});
+      gtk_grid_attach (GTK_GRID (grid), join_combo, 1, 3, 1, 1);
+
+      gtk_grid_attach (GTK_GRID (grid), gtk_label_new ("Miter limit:"), 0, 4, 1, 1);
+      limit_spin = gtk_spin_button_new_with_range (0, 10, 1);
+      gtk_spin_button_set_digits (GTK_SPIN_BUTTON (limit_spin), 1);
+      gtk_spin_button_set_value (GTK_SPIN_BUTTON (limit_spin), 4);
+      gtk_grid_attach (GTK_GRID (grid), limit_spin, 1, 4, 1, 1);
+
+      gtk_grid_attach (GTK_GRID (grid), gtk_label_new ("Dashes:"), 0, 5, 1, 1);
+      dash_entry = gtk_entry_new ();
+      gtk_grid_attach (GTK_GRID (grid), dash_entry, 1, 5, 1, 1);
+
+      stroke_toggle = gtk_check_button_new_with_label ("Show outline");
+      gtk_grid_attach (GTK_GRID (grid), stroke_toggle, 1, 6, 1, 1);
+
+      titlebar = gtk_header_bar_new ();
+      gtk_header_bar_pack_start (GTK_HEADER_BAR (titlebar), edit_toggle);
+      gtk_header_bar_pack_start (GTK_HEADER_BAR (titlebar), reset_button);
+      gtk_header_bar_pack_start (GTK_HEADER_BAR (titlebar), stroke_button);
+
+      gtk_window_set_titlebar (GTK_WINDOW (window), titlebar);
+
+      demo = curve_editor_new ();
+
+      g_signal_connect (stroke_toggle, "toggled", G_CALLBACK (stroke_toggled), demo);
+      g_signal_connect (edit_toggle, "notify::active", G_CALLBACK (edit_changed), demo);
+      g_signal_connect (reset_button, "clicked", G_CALLBACK (reset), demo);
+      g_signal_connect (cap_combo, "notify::selected", G_CALLBACK (cap_changed), demo);
+      g_signal_connect (join_combo, "notify::selected", G_CALLBACK (join_changed), demo);
+      g_signal_connect (color_button, "notify::rgba", G_CALLBACK (color_changed), demo);
+      g_signal_connect (line_width_spin, "value-changed", G_CALLBACK (line_width_changed), demo);
+      g_signal_connect (limit_spin, "value-changed", G_CALLBACK (limit_changed), demo);
+      g_signal_connect (dash_entry, "notify::text", G_CALLBACK (dashes_changed), demo);
+
+      reset (NULL, CURVE_EDITOR (demo));
+
+      gtk_spin_button_set_value (GTK_SPIN_BUTTON (line_width_spin), 6);
+      gtk_color_chooser_set_rgba (GTK_COLOR_CHOOSER (color_button), &(GdkRGBA) { 1, 0, 0, 1 });
+      gtk_drop_down_set_selected (GTK_DROP_DOWN (cap_combo), GSK_LINE_CAP_ROUND);
+      gtk_editable_set_text (GTK_EDITABLE (dash_entry), "0 8");
+
+      gtk_window_set_child (GTK_WINDOW (window), demo);
+    }
+
+  if (!gtk_widget_get_visible (window))
+    gtk_widget_show (window);
+  else
+    gtk_window_destroy (GTK_WINDOW (window));
+
+  return window;
+}
@@ -249,6 +249,10 @@
  <gresource prefix="/video-player">
    <file>bbb.png</file>
  </gresource>
+  <gresource prefix="/curve">
+    <file>curve-editor.c</file>
+    <file>curve-editor.h</file>
+  </gresource>
  <gresource prefix="/sources">
    <file>application_demo.c</file>
    <file>assistant.c</file>
@@ -266,6 +270,7 @@
    <file>css_pixbufs.c</file>
    <file>css_shadows.c</file>
    <file>cursors.c</file>
+    <file>curve.c</file>
    <file>dialog.c</file>
    <file>drawingarea.c</file>
    <file>dropdown.c</file>
@@ -286,6 +291,7 @@
    <file>gears.c</file>
    <file>gestures.c</file>
    <file>glarea.c</file>
+    <file>glyphs.c</file>
    <file>gltransition.c</file>
    <file>headerbar.c</file>
    <file>hypertext.c</file>
@@ -324,6 +330,9 @@
    <file>paintable_symbolic.c</file>
    <file>panes.c</file>
    <file>password_entry.c</file>
+    <file>path_fill.c</file>
+    <file>path_maze.c</file>
+    <file>path_text.c</file>
    <file>peg_solitaire.c</file>
    <file>pickers.c</file>
    <file>printing.c</file>
@@ -408,6 +417,9 @@
  <gresource prefix="/fontrendering">
    <file>fontrendering.ui</file>
  </gresource>
+  <gresource prefix="/path_text">
+    <file>path_text.ui</file>
+  </gresource>
  <gresource prefix="/org/gtk/Demo4">
    <file>icons/16x16/actions/application-exit.png</file>
    <file>icons/16x16/actions/document-new.png</file>
@@ -7,7 +7,8 @@
 * shows.
 *
 * We also demonstrate adding other things to a text view, such as
- * clickable icons.
+ * clickable icons and widgets which can also replace a character
+ * (try copying the ghost text).
 */

 #include <gtk/gtk.h>
@@ -113,7 +114,12 @@ show_page (GtkTextView *text_view,
      gtk_level_bar_set_value (GTK_LEVEL_BAR (child), 50);
      gtk_widget_set_size_request (child, 100, -1);
      gtk_text_view_add_child_at_anchor (text_view, child, anchor);
-      gtk_text_buffer_insert (buffer, &iter, ".", -1);
+      gtk_text_buffer_insert (buffer, &iter, " and labels with ", -1);
+      anchor = gtk_text_child_anchor_new_with_replacement ("👻");
+      gtk_text_buffer_insert_child_anchor (buffer, &iter, anchor);
+      child = gtk_label_new ("ghost");
+      gtk_text_view_add_child_at_anchor (text_view, child, anchor);
+      gtk_text_buffer_insert (buffer, &iter, " text.", -1);
    }
  else if (page == 2)
    {
@@ -177,15 +177,6 @@ file_open_cb (GtkWidget     *button,
  gtk_native_dialog_show (GTK_NATIVE_DIALOG (dialog));
 }

-static void
-listview_activate_cb (GtkListView *listview,
-                      guint        pos,
-                      gpointer     unused)
-{
-  gtk_fixed_item_selection_set_selected_position (GTK_FIXED_ITEM_SELECTION (gtk_list_view_get_model (listview)),
-                                                  pos);
-}
-
 GtkWidget *
 do_listview_words (GtkWidget *do_widget)
 {
@@ -194,7 +185,6 @@ do_listview_words (GtkWidget *do_widget)
      GtkWidget *header, *listview, *sw, *vbox, *search_entry, *open_button, *overlay;
      GtkFilterListModel *filter_model;
      GtkStringList *stringlist;
-      GtkFixedItemSelection *selection;
      GtkFilter *filter;
      GFile *file;

@@ -251,15 +241,11 @@ do_listview_words (GtkWidget *do_widget)
      gtk_widget_set_vexpand (sw, TRUE);
      gtk_overlay_set_child (GTK_OVERLAY (overlay), sw);

-      selection = gtk_fixed_item_selection_new (G_LIST_MODEL (filter_model));
-
      listview = gtk_list_view_new (
-          GTK_SELECTION_MODEL (selection),
+          GTK_SELECTION_MODEL (gtk_no_selection_new (G_LIST_MODEL (filter_model))),
          gtk_builder_list_item_factory_new_from_bytes (NULL,
              g_bytes_new_static (factory_text, strlen (factory_text))));
      gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (sw), listview);
-      gtk_list_view_set_single_click_activate (GTK_LIST_VIEW (listview), TRUE);
-      g_signal_connect (listview, "activate", G_CALLBACK (listview_activate_cb), NULL);

      g_signal_connect (filter_model, "items-changed", G_CALLBACK (update_title_cb), progress);
      g_signal_connect (filter_model, "notify::pending", G_CALLBACK (update_title_cb), progress);
@@ -192,7 +192,7 @@ activate_about (GSimpleAction *action,
                          glib_micro_version);
  g_string_append_printf (s, "\tPango\t%s\n",
                          pango_version_string ());
-  g_string_append_printf (s, "\tGTK\t%d.%d.%d\n",
+  g_string_append_printf (s, "\tGTK \t%d.%d.%d\n",
                          gtk_get_major_version (),
                          gtk_get_minor_version (),
                          gtk_get_micro_version ());
@@ -512,7 +512,7 @@ load_file (const char *demoname,

  info_buffer = gtk_text_buffer_new (NULL);
  gtk_text_buffer_create_tag (info_buffer, "title",
-                              "font", "Sans 18",
+                              "size", 18 * 1024,
                              "pixels-below-lines", 10,
                              NULL);

@@ -17,6 +17,7 @@ demos = files([
  'css_pixbufs.c',
  'css_shadows.c',
  'cursors.c',
+  'curve.c',
  'dialog.c',
  'drawingarea.c',
  'dnd.c',
@@ -34,6 +35,7 @@ demos = files([
  'gestures.c',
  'glarea.c',
  'gltransition.c',
+  'glyphs.c',
  'headerbar.c',
  'hypertext.c',
  'iconscroll.c',
@@ -70,6 +72,9 @@ demos = files([
  'paintable_symbolic.c',
  'panes.c',
  'password_entry.c',
+  'path_fill.c',
+  'path_maze.c',
+  'path_text.c',
  'peg_solitaire.c',
  'pickers.c',
  'printing.c',
@@ -128,6 +133,7 @@ extra_demo_sources = files([
  'script-names.c',
  'unicode-names.c',
  'suggestionentry.c',
+  'curve-editor.c',
 ])

 if harfbuzz_dep.found() and pangoft_dep.found()
@@ -140,7 +146,7 @@ if os_unix
  demos += files('pagesetup.c')
 endif

-librsvg_dep = dependency('librsvg-2.0', version: '>= 2.46.0', required: false)
+librsvg_dep = dependency('librsvg-2.0', version: '>= 2.52.0', required: false)

 if librsvg_dep.found()
  demos += files('paintable_svg.c')
@@ -228,7 +234,9 @@ endif
 # Use a subset of compiler flags
 demo_cflags = []
 foreach flag: common_cflags
-  if flag not in ['-Werror=missing-prototypes', '-Werror=missing-declarations', '-fvisibility=hidden']
+  if flag not in ['-Werror=missing-prototypes', '-Wmissing-prototypes',
+                  '-Werror=missing-declarations', '-Wmissing-declarations',
+                  '-fvisibility=hidden']
    demo_cflags += flag
  endif
 endforeach
@@ -0,0 +1,348 @@
+/* Path/Text Fill
+ *
+ * This demo shows how to use PangoCairo to draw text with more than
+ * just a single color.
+ */
+
+#include <glib/gi18n.h>
+#include <gtk/gtk.h>
+
+#include "paintable.h"
+#include "gsk/gskpathdashprivate.h"
+
+#define GTK_TYPE_PATH_PAINTABLE (gtk_path_paintable_get_type ())
+G_DECLARE_FINAL_TYPE (GtkPathPaintable, gtk_path_paintable, GTK, PATH_PAINTABLE, GObject)
+
+struct _GtkPathPaintable
+{
+  GObject parent_instance;
+
+  int width;
+  int height;
+  GskPath *path;
+  GdkPaintable *background;
+};
+
+struct _GtkPathPaintableClass
+{
+  GObjectClass parent_class;
+};
+
+static int
+gtk_path_paintable_get_intrinsic_width (GdkPaintable *paintable)
+{
+  GtkPathPaintable *self = GTK_PATH_PAINTABLE (paintable);
+
+  if (self->background)
+    return MAX (gdk_paintable_get_intrinsic_width (self->background), self->width);
+  else
+    return self->width;
+}
+
+static int
+gtk_path_paintable_get_intrinsic_height (GdkPaintable *paintable)
+{
+  GtkPathPaintable *self = GTK_PATH_PAINTABLE (paintable);
+
+  if (self->background)
+    return MAX (gdk_paintable_get_intrinsic_height (self->background), self->height);
+  else
+    return self->height;
+}
+
+static void
+gtk_path_paintable_snapshot (GdkPaintable *paintable,
+                             GdkSnapshot  *snapshot,
+                             double        width,
+                             double        height)
+{
+  GtkPathPaintable *self = GTK_PATH_PAINTABLE (paintable);
+
+#if 0
+  gtk_snapshot_push_fill (snapshot, self->path, GSK_FILL_RULE_WINDING);
+#else
+  GskStroke *stroke = gsk_stroke_new (2.0);
+  gtk_snapshot_push_stroke (snapshot, self->path, stroke);
+  gsk_stroke_free (stroke);
+#endif
+
+  if (self->background)
+    {
+      gdk_paintable_snapshot (self->background, snapshot, width, height);
+    }
+  else
+    {
+      gtk_snapshot_append_linear_gradient (snapshot,
+                                           &GRAPHENE_RECT_INIT (0, 0, width, height),
+                                           &GRAPHENE_POINT_INIT (0, 0),
+                                           &GRAPHENE_POINT_INIT (width, height),
+                                           (GskColorStop[8]) {
+                                             { 0.0, { 1.0, 0.0, 0.0, 1.0 } },
+                                             { 0.2, { 1.0, 0.0, 0.0, 1.0 } },
+                                             { 0.3, { 1.0, 1.0, 0.0, 1.0 } },
+                                             { 0.4, { 0.0, 1.0, 0.0, 1.0 } },
+                                             { 0.6, { 0.0, 1.0, 1.0, 1.0 } },
+                                             { 0.7, { 0.0, 0.0, 1.0, 1.0 } },
+                                             { 0.8, { 1.0, 0.0, 1.0, 1.0 } },
+                                             { 1.0, { 1.0, 0.0, 1.0, 1.0 } }
+                                           },
+                                           8);
+    }
+
+  gtk_snapshot_pop (snapshot);
+
+}
+
+static GdkPaintableFlags
+gtk_path_paintable_get_flags (GdkPaintable *paintable)
+{
+  GtkPathPaintable *self = GTK_PATH_PAINTABLE (paintable);
+
+  if (self->background)
+    return gdk_paintable_get_flags (self->background);
+  else
+    return GDK_PAINTABLE_STATIC_CONTENTS | GDK_PAINTABLE_STATIC_SIZE;
+}
+
+static void
+gtk_path_paintable_paintable_init (GdkPaintableInterface *iface)
+{
+  iface->get_intrinsic_width = gtk_path_paintable_get_intrinsic_width;
+  iface->get_intrinsic_height = gtk_path_paintable_get_intrinsic_height;
+  iface->snapshot = gtk_path_paintable_snapshot;
+  iface->get_flags = gtk_path_paintable_get_flags;
+}
+
+/* When defining the GType, we need to implement the GdkPaintable interface */
+G_DEFINE_TYPE_WITH_CODE (GtkPathPaintable, gtk_path_paintable, G_TYPE_OBJECT,
+                         G_IMPLEMENT_INTERFACE (GDK_TYPE_PAINTABLE,
+                                                gtk_path_paintable_paintable_init))
+
+/* Here's the boilerplate for the GObject declaration.
+ * We don't need to do anything special here, because we keep no
+ * data of our own.
+ */
+static void
+gtk_path_paintable_class_init (GtkPathPaintableClass *klass)
+{
+}
+
+static void
+gtk_path_paintable_init (GtkPathPaintable *self)
+{
+}
+
+/* And finally, we add a simple constructor.
+ * It is declared in the header so that the other examples
+ * can use it.
+ */
+GdkPaintable *
+gtk_path_paintable_new (GskPath      *path,
+                        GdkPaintable *background,
+                        int           width,
+                        int           height)
+{
+  GtkPathPaintable *self;
+
+  self = g_object_new (GTK_TYPE_PATH_PAINTABLE, NULL);
+  self->path = path;
+  self->background = background;
+  if (self->background)
+    {
+      g_signal_connect_swapped (self->background, "invalidate-contents", G_CALLBACK (gdk_paintable_invalidate_contents), self);
+      g_signal_connect_swapped (self->background, "invalidate-size", G_CALLBACK (gdk_paintable_invalidate_size), self);
+    }
+  self->width = width;
+  self->height = height;
+
+  return GDK_PAINTABLE (self);
+}
+
+void
+gtk_path_paintable_set_path (GtkPathPaintable *self,
+                             GskPath          *path)
+{
+  g_clear_pointer (&self->path, gsk_path_unref);
+  self->path = gsk_path_ref (path);
+
+  gdk_paintable_invalidate_contents (GDK_PAINTABLE (self));
+}
+
+static GskPath *
+create_hexagon (GtkWidget *widget)
+{
+  GskPathBuilder *builder;
+
+  builder = gsk_path_builder_new ();
+
+  gsk_path_builder_move_to (builder, 120, 0);
+  gsk_path_builder_line_to (builder, 360, 0);
+  gsk_path_builder_line_to (builder, 480, 208);
+  gsk_path_builder_line_to (builder, 360, 416);
+  gsk_path_builder_line_to (builder, 120, 416);
+  gsk_path_builder_line_to (builder, 0, 208);
+  gsk_path_builder_close (builder);
+
+  return gsk_path_builder_free_to_path (builder);
+}
+
+static GskPath *
+create_path_from_text (GtkWidget *widget)
+{
+  PangoLayout *layout;
+  PangoFontDescription *desc;
+  GskPathBuilder *builder;
+
+  layout = gtk_widget_create_pango_layout (widget, "Pango power!\nPango power!\nPango power!");
+  desc = pango_font_description_from_string ("sans bold 36");
+  pango_layout_set_font_description (layout, desc);
+  pango_font_description_free (desc);
+
+  builder = gsk_path_builder_new ();
+
+  gsk_path_builder_add_layout (builder, layout);
+
+  return gsk_path_builder_free_to_path (builder);
+}
+
+static gboolean
+build_path (GskPathOperation        op,
+            const graphene_point_t *pts,
+            gsize                   n_pts,
+            float                   weight,
+            gpointer                user_data)
+{
+  GskPathBuilder *builder = user_data;
+
+  switch (op)
+  {
+    case GSK_PATH_MOVE:
+      gsk_path_builder_move_to (builder, pts[0].x, pts[0].y);
+      break;
+
+    case GSK_PATH_CLOSE:
+      gsk_path_builder_close (builder);
+      break;
+
+    case GSK_PATH_LINE:
+      gsk_path_builder_line_to (builder, pts[1].x, pts[1].y);
+      break;
+
+    case GSK_PATH_CURVE:
+      gsk_path_builder_curve_to (builder, pts[1].x, pts[1].y, pts[2].x, pts[2].y, pts[3].x, pts[3].y);
+      break;
+
+    case GSK_PATH_CONIC:
+      gsk_path_builder_conic_to (builder, pts[1].x, pts[1].y, pts[2].x, pts[2].y, weight);
+      break;
+
+    default:
+      g_assert_not_reached ();
+      break;
+  }
+
+  return TRUE;
+}
+
+
+static gboolean
+update_path (GtkWidget     *widget,
+             GdkFrameClock *frame_clock,
+             gpointer       measure)
+{
+  float progress = gdk_frame_clock_get_frame_time (frame_clock) % (60 * G_USEC_PER_SEC) / (float) (30 * G_USEC_PER_SEC);
+  GskPathBuilder *builder;
+  GskPath *path;
+  graphene_point_t pos;
+  graphene_vec2_t tangent;
+  GskStroke *stroke;
+
+  builder = gsk_path_builder_new ();
+  gsk_path_builder_add_segment (builder,
+                                measure,
+#if 1
+                                0.0, gsk_path_measure_get_length (measure));
+#else
+                                progress > 1 ? (progress - 1) * gsk_path_measure_get_length (measure) : 0.0,
+                                (progress < 1 ? progress : 1.0) * gsk_path_measure_get_length (measure));
+#endif
+
+  path = gsk_path_builder_free_to_path (builder);
+
+  stroke = gsk_stroke_new (1);
+  gsk_stroke_set_dash (stroke, (float[2]) { 10, 5 }, 2);
+  gsk_stroke_set_dash_offset (stroke, - (gdk_frame_clock_get_frame_time (frame_clock) % G_USEC_PER_SEC) * 15. / G_USEC_PER_SEC);
+  builder = gsk_path_builder_new ();
+  gsk_path_dash (path, stroke, 0.2, build_path, builder);
+  gsk_path_unref (path);
+
+  gsk_path_measure_get_point (measure,
+                              (progress > 1 ? (progress - 1) : progress) * gsk_path_measure_get_length (measure),
+                              &pos,
+                              &tangent);
+  gsk_path_builder_move_to (builder, pos.x + 5 * graphene_vec2_get_x (&tangent), pos.y + 5 * graphene_vec2_get_y (&tangent));
+  gsk_path_builder_line_to (builder, pos.x + 3 * graphene_vec2_get_y (&tangent), pos.y + 3 * graphene_vec2_get_x (&tangent));
+  gsk_path_builder_line_to (builder, pos.x - 3 * graphene_vec2_get_y (&tangent), pos.y - 3 * graphene_vec2_get_x (&tangent));
+  gsk_path_builder_close (builder);
+
+  path = gsk_path_builder_free_to_path (builder);
+
+  gtk_path_paintable_set_path (GTK_PATH_PAINTABLE (gtk_picture_get_paintable (GTK_PICTURE (widget))),
+                               path);
+  gsk_path_unref (path);
+
+  return G_SOURCE_CONTINUE;
+}
+
+GtkWidget *
+do_path_fill (GtkWidget *do_widget)
+{
+  static GtkWidget *window = NULL;
+
+  if (!window)
+    {
+      GtkWidget *picture;
+      GdkPaintable *paintable;
+      GtkMediaStream *stream;
+      GskPath *path;
+      graphene_rect_t bounds;
+      GskPathMeasure *measure;
+
+      window = gtk_window_new ();
+      gtk_window_set_resizable (GTK_WINDOW (window), TRUE);
+      gtk_window_set_title (GTK_WINDOW (window), "Path Fill");
+      g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window);
+
+#if 0
+      stream = gtk_media_file_new_for_resource ("/images/gtk-logo.webm");
+#else
+      stream = gtk_nuclear_media_stream_new ();
+#endif
+      gtk_media_stream_play (stream);
+      gtk_media_stream_set_loop (stream, TRUE);
+
+      path = create_hexagon (window);
+      path = create_path_from_text (window);
+      gsk_path_get_bounds (path, &bounds);
+
+      paintable = gtk_path_paintable_new (path,
+                                          GDK_PAINTABLE (stream),
+                                          bounds.origin.x + bounds.size.width,
+                                          bounds.origin.y + bounds.size.height);
+      picture = gtk_picture_new_for_paintable (paintable);
+      measure = gsk_path_measure_new (path);
+      gtk_widget_add_tick_callback (picture, update_path, measure, (GDestroyNotify) gsk_path_measure_unref);
+      gtk_picture_set_keep_aspect_ratio (GTK_PICTURE (picture), FALSE);
+      gtk_picture_set_can_shrink (GTK_PICTURE (picture), FALSE);
+      g_object_unref (paintable);
+
+      gtk_window_set_child (GTK_WINDOW (window), picture);
+    }
+
+  if (!gtk_widget_get_visible (window))
+    gtk_widget_show (window);
+  else
+    gtk_window_destroy (GTK_WINDOW (window));
+
+  return window;
+}
@@ -0,0 +1,339 @@
+/* Path/Maze
+ * #Keywords: game, mouse
+ *
+ * This demo shows how to use a GskPath to create a maze and use
+ * gsk_path_measure_get_closest_point() to check the mouse stays
+ * on the path.
+ *
+ * It also shows off the performance of GskPath (or not) as this
+ * is a rather complex path.
+ */
+
+#include <glib/gi18n.h>
+#include <gtk/gtk.h>
+
+#include "paintable.h"
+
+#define MAZE_GRID_SIZE 20
+#define MAZE_STROKE_SIZE_ACTIVE (MAZE_GRID_SIZE - 4)
+#define MAZE_STROKE_SIZE_INACTIVE (MAZE_GRID_SIZE - 12)
+#define MAZE_WIDTH 31
+#define MAZE_HEIGHT 21
+
+#define GTK_TYPE_MAZE (gtk_maze_get_type ())
+G_DECLARE_FINAL_TYPE (GtkMaze, gtk_maze, GTK, MAZE, GtkWidget)
+
+struct _GtkMaze
+{
+  GtkWidget parent_instance;
+
+  int width;
+  int height;
+  GskPath *path;
+  GskPathMeasure *measure;
+  GdkPaintable *background;
+
+  gboolean active;
+};
+
+struct _GtkMazeClass
+{
+  GtkWidgetClass parent_class;
+};
+
+G_DEFINE_TYPE (GtkMaze, gtk_maze, GTK_TYPE_WIDGET)
+
+static void
+gtk_maze_measure (GtkWidget      *widget,
+                  GtkOrientation  orientation,
+                  int             for_size,
+                  int            *minimum,
+                  int            *natural,
+                  int            *minimum_baseline,
+                  int            *natural_baseline)
+{
+  GtkMaze *self = GTK_MAZE (widget);
+
+  if (orientation == GTK_ORIENTATION_HORIZONTAL)
+    *minimum = *natural = self->width;
+  else
+    *minimum = *natural = self->height;
+}
+
+static void
+gtk_maze_snapshot (GtkWidget   *widget,
+                   GdkSnapshot *snapshot)
+{
+  GtkMaze *self = GTK_MAZE (widget);
+  double width = gtk_widget_get_width (widget);
+  double height = gtk_widget_get_height (widget);
+  GskStroke *stroke;
+
+  stroke = gsk_stroke_new (MAZE_STROKE_SIZE_INACTIVE);
+  if (self->active)
+    gsk_stroke_set_line_width (stroke, MAZE_STROKE_SIZE_ACTIVE);
+  gsk_stroke_set_line_join (stroke, GSK_LINE_JOIN_ROUND);
+  gsk_stroke_set_line_cap (stroke, GSK_LINE_CAP_ROUND);
+  gtk_snapshot_push_stroke (snapshot, self->path, stroke);
+  gsk_stroke_free (stroke);
+
+  if (self->background)
+    {
+      gdk_paintable_snapshot (self->background, snapshot, width, height);
+    }
+  else
+    {
+      gtk_snapshot_append_linear_gradient (snapshot,
+                                           &GRAPHENE_RECT_INIT (0, 0, width, height),
+                                           &GRAPHENE_POINT_INIT (0, 0),
+                                           &GRAPHENE_POINT_INIT (width, height),
+                                           (GskColorStop[8]) {
+                                             { 0.0, { 1.0, 0.0, 0.0, 1.0 } },
+                                             { 0.2, { 1.0, 0.0, 0.0, 1.0 } },
+                                             { 0.3, { 1.0, 1.0, 0.0, 1.0 } },
+                                             { 0.4, { 0.0, 1.0, 0.0, 1.0 } },
+                                             { 0.6, { 0.0, 1.0, 1.0, 1.0 } },
+                                             { 0.7, { 0.0, 0.0, 1.0, 1.0 } },
+                                             { 0.8, { 1.0, 0.0, 1.0, 1.0 } },
+                                             { 1.0, { 1.0, 0.0, 1.0, 1.0 } }
+                                           },
+                                           8);
+    }
+
+  gtk_snapshot_pop (snapshot);
+
+}
+
+static void
+gtk_maze_dispose (GObject *object)
+{
+  GtkMaze *self = GTK_MAZE (object);
+
+  g_clear_pointer (&self->path, gsk_path_unref);
+  g_clear_pointer (&self->measure, gsk_path_measure_unref);
+  if (self->background)
+    {
+      g_signal_handlers_disconnect_matched (self->background, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, self);
+      g_clear_object (&self->background);
+    }
+
+  G_OBJECT_CLASS (gtk_maze_parent_class)->dispose (object);
+}
+
+static void
+gtk_maze_class_init (GtkMazeClass *klass)
+{
+  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  object_class->dispose = gtk_maze_dispose;
+
+  widget_class->measure = gtk_maze_measure;
+  widget_class->snapshot = gtk_maze_snapshot;
+}
+
+static void
+pointer_motion (GtkEventControllerMotion *controller,
+                double                    x,
+                double                    y,
+                GtkMaze                  *self)
+{
+  if (!self->active)
+    return;
+
+  if (gsk_path_measure_get_closest_point (self->measure, &GRAPHENE_POINT_INIT (x, y), NULL) <= MAZE_STROKE_SIZE_ACTIVE / 2.0f)
+    return;
+
+  self->active = FALSE;
+  gtk_widget_queue_draw (GTK_WIDGET (self));
+}
+
+static void
+pointer_leave (GtkEventControllerMotion *controller,
+               GtkMaze                  *self)
+{
+  if (!self->active)
+    {
+      self->active = TRUE;
+      gtk_widget_queue_draw (GTK_WIDGET (self));
+    }
+}
+
+static void
+gtk_maze_init (GtkMaze *self)
+{
+  GtkEventController *controller;
+
+  controller = GTK_EVENT_CONTROLLER (gtk_event_controller_motion_new ());
+  g_signal_connect (controller, "motion", G_CALLBACK (pointer_motion), self);
+  g_signal_connect (controller, "leave", G_CALLBACK (pointer_leave), self);
+  gtk_widget_add_controller (GTK_WIDGET (self), controller);
+
+  self->active = TRUE;
+}
+
+static void
+gtk_maze_set_path (GtkMaze *self,
+                   GskPath *path)
+{
+  g_clear_pointer (&self->path, gsk_path_unref);
+  g_clear_pointer (&self->measure, gsk_path_measure_unref);
+  self->path = gsk_path_ref (path);
+  self->measure = gsk_path_measure_new (path);
+
+  gtk_widget_queue_draw (GTK_WIDGET (self));
+}
+
+GtkWidget *
+gtk_maze_new (GskPath      *path,
+              GdkPaintable *background,
+              int           width,
+              int           height)
+{
+  GtkMaze *self;
+
+  self = g_object_new (GTK_TYPE_MAZE, NULL);
+
+  gtk_maze_set_path (self, path);
+  gsk_path_unref (path);
+  self->background = background;
+  if (self->background)
+    {
+      g_signal_connect_swapped (self->background, "invalidate-contents", G_CALLBACK (gtk_widget_queue_draw), self);
+      g_signal_connect_swapped (self->background, "invalidate-size", G_CALLBACK (gtk_widget_queue_resize), self);
+    }
+  self->width = width;
+  self->height = height;
+
+  return GTK_WIDGET (self);
+}
+
+static void
+add_point_to_maze (GtkBitset      *maze,
+                   GskPathBuilder *builder,
+                   guint           x,
+                   guint           y)
+{
+  gboolean set[4] = { };
+  guint dir;
+
+  gtk_bitset_add (maze, y * MAZE_WIDTH + x);
+
+  while (TRUE)
+    {
+      set[0] = set[0] || x == 0 || gtk_bitset_contains (maze, y * MAZE_WIDTH + x - 1);
+      set[1] = set[1] || y == 0 || gtk_bitset_contains (maze, (y - 1) * MAZE_WIDTH + x);
+      set[2] = set[2] || x + 1 == MAZE_WIDTH || gtk_bitset_contains (maze, y * MAZE_WIDTH + x + 1);
+      set[3] = set[3] || y + 1 == MAZE_HEIGHT || gtk_bitset_contains (maze, (y + 1) * MAZE_WIDTH + x);
+
+      if (set[0] && set[1] && set[2] && set[3])
+        return;
+
+      do
+        {
+          dir = g_random_int_range (0, 4);
+        }
+      while (set[dir]);
+
+      switch (dir)
+        {
+          case 0:
+            gsk_path_builder_move_to (builder, (x + 0.5) * MAZE_GRID_SIZE, (y + 0.5) * MAZE_GRID_SIZE);
+            gsk_path_builder_line_to (builder, (x - 0.5) * MAZE_GRID_SIZE, (y + 0.5) * MAZE_GRID_SIZE);
+            add_point_to_maze (maze, builder, x - 1, y);
+            break;
+
+          case 1:
+            gsk_path_builder_move_to (builder, (x + 0.5) * MAZE_GRID_SIZE, (y + 0.5) * MAZE_GRID_SIZE);
+            gsk_path_builder_line_to (builder, (x + 0.5) * MAZE_GRID_SIZE, (y - 0.5) * MAZE_GRID_SIZE);
+            add_point_to_maze (maze, builder, x, y - 1);
+            break;
+
+          case 2:
+            gsk_path_builder_move_to (builder, (x + 0.5) * MAZE_GRID_SIZE, (y + 0.5) * MAZE_GRID_SIZE);
+            gsk_path_builder_line_to (builder, (x + 1.5) * MAZE_GRID_SIZE, (y + 0.5) * MAZE_GRID_SIZE);
+            add_point_to_maze (maze, builder, x + 1, y);
+            break;
+
+          case 3:
+            gsk_path_builder_move_to (builder, (x + 0.5) * MAZE_GRID_SIZE, (y + 0.5) * MAZE_GRID_SIZE);
+            gsk_path_builder_line_to (builder, (x + 0.5) * MAZE_GRID_SIZE, (y + 1.5) * MAZE_GRID_SIZE);
+            add_point_to_maze (maze, builder, x, y + 1);
+            break;
+
+          default:
+            g_assert_not_reached ();
+            break;
+        }
+    }
+}
+
+static GskPath *
+create_path_for_maze (GtkWidget *widget)
+{
+  GskPathBuilder *builder;
+  GtkBitset *maze;
+
+  builder = gsk_path_builder_new ();
+  maze = gtk_bitset_new_empty ();
+  /* make sure the outer lines are unreachable:
+   * Set the full range, then remove the center again. */
+  gtk_bitset_add_range (maze, 0, MAZE_WIDTH * MAZE_HEIGHT);
+  gtk_bitset_remove_rectangle (maze, MAZE_WIDTH + 1, MAZE_WIDTH - 2, MAZE_HEIGHT - 2, MAZE_WIDTH);
+
+  /* Fill the maze */
+  add_point_to_maze (maze, builder, MAZE_WIDTH / 2, MAZE_HEIGHT / 2);
+
+  /* Add start and stop lines */
+  gsk_path_builder_move_to (builder, 1.5 * MAZE_GRID_SIZE, -0.5 * MAZE_GRID_SIZE);
+  gsk_path_builder_line_to (builder, 1.5 * MAZE_GRID_SIZE, 1.5 * MAZE_GRID_SIZE);
+  gsk_path_builder_move_to (builder, (MAZE_WIDTH - 1.5) * MAZE_GRID_SIZE, (MAZE_HEIGHT - 1.5) * MAZE_GRID_SIZE);
+  gsk_path_builder_line_to (builder, (MAZE_WIDTH - 1.5) * MAZE_GRID_SIZE, (MAZE_HEIGHT + 0.5) * MAZE_GRID_SIZE);
+
+
+  gtk_bitset_unref (maze);
+
+  return gsk_path_builder_free_to_path (builder);
+}
+
+GtkWidget *
+do_path_maze (GtkWidget *do_widget)
+{
+  static GtkWidget *window = NULL;
+
+  if (!window)
+    {
+      GtkWidget *maze;
+      GtkMediaStream *stream;
+      GskPath *path;
+
+      window = gtk_window_new ();
+      gtk_window_set_resizable (GTK_WINDOW (window), TRUE);
+      gtk_window_set_title (GTK_WINDOW (window), "Follow the maze with the mouse");
+      g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window);
+
+#if 0
+      stream = gtk_media_file_new_for_resource ("/images/gtk-logo.webm");
+#else
+      stream = gtk_nuclear_media_stream_new ();
+#endif
+      gtk_media_stream_play (stream);
+      gtk_media_stream_set_loop (stream, TRUE);
+
+      path = create_path_for_maze (window);
+
+      maze = gtk_maze_new (path,
+                           GDK_PAINTABLE (stream),
+                           MAZE_WIDTH * MAZE_GRID_SIZE,
+                           MAZE_HEIGHT * MAZE_GRID_SIZE);
+
+      gtk_window_set_child (GTK_WINDOW (window), maze);
+    }
+
+  if (!gtk_widget_get_visible (window))
+    gtk_widget_show (window);
+  else
+    gtk_window_destroy (GTK_WINDOW (window));
+
+  return window;
+}
@@ -0,0 +1,594 @@
+/* Path/Curved Text
+ *
+ * This demo shows how to use GskPath to animate a path along another path.
+ */
+
+#include <glib/gi18n.h>
+#include <gtk/gtk.h>
+
+#define GTK_TYPE_PATH_WIDGET (gtk_path_widget_get_type ())
+G_DECLARE_FINAL_TYPE (GtkPathWidget, gtk_path_widget, GTK, PATH_WIDGET, GtkWidget)
+
+#define POINT_SIZE 8
+
+enum {
+  PROP_0,
+  PROP_TEXT,
+  PROP_EDITABLE,
+  N_PROPS
+};
+
+struct _GtkPathWidget
+{
+  GtkWidget parent_instance;
+
+  char *text;
+  gboolean editable;
+
+  graphene_point_t points[4];
+
+  guint active_point;
+  float line_closest;
+
+  GskPath *line_path;
+  GskPathMeasure *line_measure;
+  GskPath *text_path;
+
+  GdkPaintable *background;
+};
+
+struct _GtkPathWidgetClass
+{
+  GtkWidgetClass parent_class;
+};
+
+static GParamSpec *properties[N_PROPS] = { NULL, };
+
+G_DEFINE_TYPE (GtkPathWidget, gtk_path_widget, GTK_TYPE_WIDGET)
+
+static GskPath *
+create_path_from_text (GtkWidget  *widget,
+                       const char *text)
+{
+  cairo_surface_t *surface;
+  cairo_t *cr;
+  cairo_path_t *path;
+  PangoLayout *layout;
+  PangoFontDescription *desc;
+  GskPath *result;
+
+  surface = cairo_recording_surface_create (CAIRO_CONTENT_COLOR_ALPHA, NULL);
+  cr = cairo_create (surface);
+
+  layout = gtk_widget_create_pango_layout (widget, text);
+  desc = pango_font_description_from_string ("sans bold 36");
+  pango_layout_set_font_description (layout, desc);
+  pango_font_description_free (desc);
+
+  cairo_move_to (cr, 0, - pango_layout_get_baseline (layout) / (double) PANGO_SCALE);
+  pango_cairo_layout_path (cr, layout);
+  path = cairo_copy_path_flat (cr);
+  result = gsk_path_new_from_cairo (path);
+
+  cairo_path_destroy (path);
+  g_object_unref (layout);
+  cairo_destroy (cr);
+  cairo_surface_destroy (surface);
+
+  return result;
+}
+
+typedef struct
+{
+  GskPathMeasure *measure;
+  GskPathBuilder *builder;
+  double scale;
+} GtkPathTransform;
+
+static void
+gtk_path_transform_point (GskPathMeasure         *measure,
+                          const graphene_point_t *pt,
+                          float                   scale,
+                          graphene_point_t       *res)
+{
+  graphene_vec2_t tangent;
+
+  gsk_path_measure_get_point (measure, pt->x * scale, res, &tangent);
+
+  res->x -= pt->y * scale * graphene_vec2_get_y (&tangent);
+  res->y += pt->y * scale * graphene_vec2_get_x (&tangent);
+}
+
+static gboolean
+gtk_path_transform_op (GskPathOperation        op,
+                       const graphene_point_t *pts,
+                       gsize                   n_pts,
+                       float                   weight,
+                       gpointer                data)
+{
+  GtkPathTransform *transform = data;
+
+  switch (op)
+  {
+    case GSK_PATH_MOVE:
+      {
+        graphene_point_t res;
+        gtk_path_transform_point (transform->measure, &pts[0], transform->scale, &res);
+        gsk_path_builder_move_to (transform->builder, res.x, res.y);
+      }
+      break;
+
+    case GSK_PATH_LINE:
+      {
+        graphene_point_t res;
+        gtk_path_transform_point (transform->measure, &pts[1], transform->scale, &res);
+        gsk_path_builder_line_to (transform->builder, res.x, res.y);
+      }
+      break;
+
+    case GSK_PATH_CURVE:
+      {
+        graphene_point_t res[3];
+        gtk_path_transform_point (transform->measure, &pts[1], transform->scale, &res[0]);
+        gtk_path_transform_point (transform->measure, &pts[2], transform->scale, &res[1]);
+        gtk_path_transform_point (transform->measure, &pts[3], transform->scale, &res[2]);
+        gsk_path_builder_curve_to (transform->builder, res[0].x, res[0].y, res[1].x, res[1].y, res[2].x, res[2].y);
+      }
+      break;
+
+    case GSK_PATH_CONIC:
+      {
+        graphene_point_t res[2];
+        gtk_path_transform_point (transform->measure, &pts[1], transform->scale, &res[0]);
+        gtk_path_transform_point (transform->measure, &pts[2], transform->scale, &res[1]);
+        gsk_path_builder_conic_to (transform->builder, res[0].x, res[0].y, res[1].x, res[1].y, weight);
+      }
+      break;
+
+    case GSK_PATH_CLOSE:
+      gsk_path_builder_close (transform->builder);
+      break;
+
+    default:
+      g_assert_not_reached();
+      return FALSE;
+  }
+
+  return TRUE;
+}
+
+static GskPath *
+gtk_path_transform (GskPathMeasure *measure,
+                    GskPath        *path)
+{
+  GtkPathTransform transform = { measure, gsk_path_builder_new () };
+  graphene_rect_t bounds;
+
+  gsk_path_get_bounds (path, &bounds);
+  if (bounds.origin.x + bounds.size.width > 0)
+    transform.scale = gsk_path_measure_get_length (measure) / (bounds.origin.x + bounds.size.width);
+  else
+    transform.scale = 1.0f;
+
+  gsk_path_foreach (path, GSK_PATH_FOREACH_ALLOW_CURVE, gtk_path_transform_op, &transform);
+
+  return gsk_path_builder_free_to_path (transform.builder);
+}
+
+static void
+gtk_path_widget_clear_text_path (GtkPathWidget *self)
+{
+  g_clear_pointer (&self->text_path, gsk_path_unref);
+}
+
+static void
+gtk_path_widget_clear_paths (GtkPathWidget *self)
+{
+  gtk_path_widget_clear_text_path (self);
+
+  g_clear_pointer (&self->line_path, gsk_path_unref);
+  g_clear_pointer (&self->line_measure, gsk_path_measure_unref);
+}
+
+static void
+gtk_path_widget_create_text_path (GtkPathWidget *self)
+{
+  GskPath *path;
+
+  gtk_path_widget_clear_text_path (self);
+
+  if (self->line_measure == NULL)
+    return;
+
+  path = create_path_from_text (GTK_WIDGET (self), self->text);
+  self->text_path = gtk_path_transform (self->line_measure, path);
+
+  gsk_path_unref (path);
+}
+
+static void
+gtk_path_widget_create_paths (GtkPathWidget *self)
+{
+  double width = gtk_widget_get_width (GTK_WIDGET (self));
+  double height = gtk_widget_get_height (GTK_WIDGET (self));
+  GskPathBuilder *builder;
+
+  gtk_path_widget_clear_paths (self);
+
+  if (width <= 0 || height <= 0)
+    return;
+
+  builder = gsk_path_builder_new ();
+  gsk_path_builder_move_to (builder,
+                            self->points[0].x * width, self->points[0].y * height);
+  gsk_path_builder_curve_to (builder,
+                             self->points[1].x * width, self->points[1].y * height,
+                             self->points[2].x * width, self->points[2].y * height,
+                             self->points[3].x * width, self->points[3].y * height);
+  self->line_path = gsk_path_builder_free_to_path (builder);
+
+  self->line_measure = gsk_path_measure_new (self->line_path);
+
+  gtk_path_widget_create_text_path (self);
+}
+
+static void
+gtk_path_widget_allocate (GtkWidget *widget,
+                          int        width,
+                          int        height,
+                          int        baseline)
+{
+  GtkPathWidget *self = GTK_PATH_WIDGET (widget);
+
+  GTK_WIDGET_CLASS (gtk_path_widget_parent_class)->size_allocate (widget, width, height, baseline);
+
+  gtk_path_widget_create_paths (self);
+}
+
+static void
+gtk_path_widget_snapshot (GtkWidget   *widget,
+                          GtkSnapshot *snapshot)
+{
+  GtkPathWidget *self = GTK_PATH_WIDGET (widget);
+  double width = gtk_widget_get_width (widget);
+  double height = gtk_widget_get_height (widget);
+  GskPath *path;
+  GskStroke *stroke;
+  gsize i;
+
+  /* frosted glass the background */
+  gtk_snapshot_push_blur (snapshot, 100);
+  gdk_paintable_snapshot (self->background, snapshot, width, height);
+  gtk_snapshot_append_color (snapshot, &(GdkRGBA) { 1, 1, 1, 0.5 }, &GRAPHENE_RECT_INIT (0, 0, width, height));
+  gtk_snapshot_pop (snapshot);
+
+  /* draw the text */
+  if (self->text_path)
+    {
+      gtk_snapshot_push_fill (snapshot, self->text_path, GSK_FILL_RULE_WINDING);
+      gdk_paintable_snapshot (self->background, snapshot, width, height);
+
+      /* ... with an emboss effect */
+      stroke = gsk_stroke_new (2.0);
+      gtk_snapshot_translate (snapshot, &GRAPHENE_POINT_INIT(1, 1));
+      gtk_snapshot_push_stroke (snapshot, self->text_path, stroke);
+      gtk_snapshot_append_color (snapshot, &(GdkRGBA) { 0, 0, 0, 0.2 }, &GRAPHENE_RECT_INIT (0, 0, width, height));
+      gsk_stroke_free (stroke);
+      gtk_snapshot_pop (snapshot);
+
+      gtk_snapshot_pop (snapshot);
+    }
+
+  if (self->editable && self->line_path)
+    {
+      /* draw the control line */
+      stroke = gsk_stroke_new (1.0);
+      gtk_snapshot_push_stroke (snapshot, self->line_path, stroke);
+      gsk_stroke_free (stroke);
+      gtk_snapshot_append_color (snapshot, &(GdkRGBA) { 0, 0, 0, 1 }, &GRAPHENE_RECT_INIT (0, 0, width, height));
+      gtk_snapshot_pop (snapshot);
+    }
+
+  if (self->line_closest >= 0)
+    {
+      GskPathBuilder *builder;
+      graphene_point_t closest;
+
+      builder = gsk_path_builder_new ();
+      gsk_path_measure_get_point (self->line_measure, self->line_closest, &closest, NULL);
+      gsk_path_builder_add_circle (builder, &closest, POINT_SIZE);
+      path = gsk_path_builder_free_to_path (builder);
+
+      gtk_snapshot_push_fill (snapshot, path, GSK_FILL_RULE_WINDING);
+      gtk_snapshot_append_color (snapshot, &(GdkRGBA) { 0, 0, 1, 1 }, &GRAPHENE_RECT_INIT (0, 0, width, height));
+      gtk_snapshot_pop (snapshot);
+
+      gsk_path_unref (path);
+    }
+
+  if (self->editable && self->line_path)
+    {
+      GskPathBuilder *builder;
+
+      /* draw the points */
+      builder = gsk_path_builder_new ();
+      for (i = 0; i < 4; i++)
+        {
+          gsk_path_builder_add_circle (builder, &GRAPHENE_POINT_INIT (self->points[i].x * width, self->points[i].y * height), POINT_SIZE);
+        }
+      path = gsk_path_builder_free_to_path (builder);
+
+      gtk_snapshot_push_fill (snapshot, path, GSK_FILL_RULE_WINDING);
+      gtk_snapshot_append_color (snapshot, &(GdkRGBA) { 1, 1, 1, 1 }, &GRAPHENE_RECT_INIT (0, 0, width, height));
+      gtk_snapshot_pop (snapshot);
+
+      stroke = gsk_stroke_new (1.0);
+      gtk_snapshot_push_stroke (snapshot, path, stroke);
+      gsk_stroke_free (stroke);
+      gtk_snapshot_append_color (snapshot, &(GdkRGBA) { 0, 0, 0, 1 }, &GRAPHENE_RECT_INIT (0, 0, width, height));
+      gtk_snapshot_pop (snapshot);
+
+      gsk_path_unref (path);
+    }
+}
+
+static void
+gtk_path_widget_set_text (GtkPathWidget *self,
+                          const char    *text)
+{
+  if (g_strcmp0 (self->text, text) == 0)
+    return;
+
+  g_free (self->text);
+  self->text = g_strdup (text);
+
+  gtk_path_widget_create_paths (self);
+
+  gtk_widget_queue_draw (GTK_WIDGET (self));
+
+  g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_TEXT]);
+}
+
+static void
+gtk_path_widget_set_editable (GtkPathWidget *self,
+                              gboolean       editable)
+{
+  if (self->editable == editable)
+    return;
+
+  self->editable = editable;
+
+  gtk_widget_queue_draw (GTK_WIDGET (self));
+
+  g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_EDITABLE]);
+}
+
+static void
+gtk_path_widget_set_property (GObject      *object,
+                              guint         prop_id,
+                              const GValue *value,
+                              GParamSpec   *pspec)
+
+{
+  GtkPathWidget *self = GTK_PATH_WIDGET (object);
+
+  switch (prop_id)
+    {
+    case PROP_TEXT:
+      gtk_path_widget_set_text (self, g_value_get_string (value));
+      break;
+
+    case PROP_EDITABLE:
+      gtk_path_widget_set_editable (self, g_value_get_boolean (value));
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+    }
+}
+
+static void
+gtk_path_widget_get_property (GObject    *object,
+                              guint       prop_id,
+                              GValue     *value,
+                              GParamSpec *pspec)
+{
+  GtkPathWidget *self = GTK_PATH_WIDGET (object);
+
+  switch (prop_id)
+    {
+    case PROP_TEXT:
+      g_value_set_string (value, self->text);
+      break;
+
+    case PROP_EDITABLE:
+      g_value_set_boolean (value, self->editable);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+    }
+}
+
+static void
+gtk_path_widget_dispose (GObject *object)
+{
+  GtkPathWidget *self = GTK_PATH_WIDGET (object);
+
+  gtk_path_widget_clear_paths (self);
+
+  G_OBJECT_CLASS (gtk_path_widget_parent_class)->dispose (object);
+}
+
+static void
+gtk_path_widget_class_init (GtkPathWidgetClass *klass)
+{
+  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  object_class->dispose = gtk_path_widget_dispose;
+  object_class->set_property = gtk_path_widget_set_property;
+  object_class->get_property = gtk_path_widget_get_property;
+
+  widget_class->size_allocate = gtk_path_widget_allocate;
+  widget_class->snapshot = gtk_path_widget_snapshot;
+
+  properties[PROP_TEXT] =
+    g_param_spec_string ("text",
+                         "text",
+                         "Text transformed along a path",
+                         NULL,
+                         G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
+
+  properties[PROP_EDITABLE] =
+    g_param_spec_boolean ("editable",
+                          "editable",
+                          "If the path can be edited by the user",
+                          FALSE,
+                          G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
+
+  g_object_class_install_properties (object_class, N_PROPS, properties);
+}
+
+static void
+drag_begin (GtkGestureDrag *gesture,
+            double          x,
+            double          y,
+            GtkPathWidget  *self)
+{
+  graphene_point_t mouse = GRAPHENE_POINT_INIT (x, y);
+  double width = gtk_widget_get_width (GTK_WIDGET (self));
+  double height = gtk_widget_get_height (GTK_WIDGET (self));
+  gsize i;
+
+  for (i = 0; i < 4; i++)
+    {
+      if (graphene_point_distance (&GRAPHENE_POINT_INIT (self->points[i].x * width, self->points[i].y * height), &mouse, NULL, NULL) <= POINT_SIZE)
+        {
+          self->active_point = i;
+          break;
+        }
+    }
+  if (i == 4)
+    {
+      gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_DENIED);
+      return;
+    }
+
+  gtk_widget_queue_draw (GTK_WIDGET (self));
+}
+
+static void
+drag_update (GtkGestureDrag *drag,
+             double          offset_x,
+             double          offset_y,
+             GtkPathWidget  *self)
+{
+  double width = gtk_widget_get_width (GTK_WIDGET (self));
+  double height = gtk_widget_get_height (GTK_WIDGET (self));
+  double start_x, start_y;
+
+  gtk_gesture_drag_get_start_point (drag, &start_x, &start_y);
+
+  self->points[self->active_point] = GRAPHENE_POINT_INIT ((start_x + offset_x) / width,
+                                                          (start_y + offset_y) / height);
+  self->points[self->active_point].x = CLAMP (self->points[self->active_point].x, 0, 1);
+  self->points[self->active_point].y = CLAMP (self->points[self->active_point].y, 0, 1);
+
+  gtk_path_widget_create_paths (self);
+
+  gtk_widget_queue_draw (GTK_WIDGET (self));
+}
+
+static void
+pointer_motion (GtkEventControllerMotion *controller,
+                double                    x,
+                double                    y,
+                GtkPathWidget            *self)
+{
+  gsk_path_measure_get_closest_point_full (self->line_measure,
+                                           &GRAPHENE_POINT_INIT (x, y),
+                                           INFINITY,
+                                           NULL, NULL,
+                                           &self->line_closest,
+                                           NULL);
+
+  gtk_widget_queue_draw (GTK_WIDGET (self));
+}
+
+static void
+pointer_leave (GtkEventControllerMotion *controller,
+               GtkPathWidget            *self)
+{
+  self->line_closest = -1;
+
+  gtk_widget_queue_draw (GTK_WIDGET (self));
+}
+
+static void
+gtk_path_widget_init (GtkPathWidget *self)
+{
+  GtkEventController *controller;
+
+  controller = GTK_EVENT_CONTROLLER (gtk_gesture_drag_new ());
+  g_signal_connect (controller, "drag-begin", G_CALLBACK (drag_begin), self);
+  g_signal_connect (controller, "drag-update", G_CALLBACK (drag_update), self);
+  g_signal_connect (controller, "drag-end", G_CALLBACK (drag_update), self);
+  gtk_widget_add_controller (GTK_WIDGET (self), controller);
+
+  controller = GTK_EVENT_CONTROLLER (gtk_event_controller_motion_new ());
+  g_signal_connect (controller, "enter", G_CALLBACK (pointer_motion), self);
+  g_signal_connect (controller, "motion", G_CALLBACK (pointer_motion), self);
+  g_signal_connect (controller, "leave", G_CALLBACK (pointer_leave), self);
+  gtk_widget_add_controller (GTK_WIDGET (self), controller);
+
+  self->line_closest = -1;
+
+  self->points[0] = GRAPHENE_POINT_INIT (0.1, 0.9);
+  self->points[1] = GRAPHENE_POINT_INIT (0.3, 0.1);
+  self->points[2] = GRAPHENE_POINT_INIT (0.7, 0.1);
+  self->points[3] = GRAPHENE_POINT_INIT (0.9, 0.9);
+
+  self->background = GDK_PAINTABLE (gdk_texture_new_from_resource ("/sliding_puzzle/portland-rose.jpg"));
+
+  gtk_path_widget_set_text (self, "It's almost working");
+}
+
+GtkWidget *
+gtk_path_widget_new (void)
+{
+  GtkPathWidget *self;
+
+  self = g_object_new (GTK_TYPE_PATH_WIDGET, NULL);
+
+  return GTK_WIDGET (self);
+}
+
+GtkWidget *
+do_path_text (GtkWidget *do_widget)
+{
+  static GtkWidget *window = NULL;
+
+  if (!window)
+    {
+      GtkBuilder *builder;
+
+      g_type_ensure (GTK_TYPE_PATH_WIDGET);
+
+      builder = gtk_builder_new_from_resource ("/path_text/path_text.ui");
+      window = GTK_WIDGET (gtk_builder_get_object (builder, "window"));
+      gtk_window_set_display (GTK_WINDOW (window),
+                              gtk_widget_get_display (do_widget));
+      g_object_add_weak_pointer (G_OBJECT (window), (gpointer *) &window);
+      g_object_unref (builder);
+    }
+
+  if (!gtk_widget_get_visible (window))
+    gtk_widget_show (window);
+  else
+    gtk_window_destroy (GTK_WINDOW (window));
+
+  return window;
+}
@@ -0,0 +1,38 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<interface>
+  <object class="GtkWindow" id="window">
+    <property name="title" translatable="yes">Text along a Path</property>
+    <child type="titlebar">
+      <object class="GtkHeaderBar">
+        <child type="end">
+          <object class="GtkToggleButton" id="edit-toggle">
+            <property name="icon-name">document-edit-symbolic</property>
+          </object>
+        </child>
+      </object>
+    </child>
+    <child>
+      <object class="GtkBox">
+        <property name="orientation">vertical</property>
+        <child>
+          <object class="GtkRevealer">
+            <property name="reveal-child" bind-source="edit-toggle" bind-property="active" bind-flags="sync-create"></property>
+            <child>
+              <object class="GtkEntry" id="text">
+                <property name="text">Through the looking glass</property>
+              </object>
+            </child>
+          </object>
+        </child>
+        <child>
+          <object class="GtkPathWidget" id="view">
+            <property name="editable" bind-source="edit-toggle" bind-property="active" bind-flags="sync-create"></property>
+            <property name="text" bind-source="text" bind-property="text" bind-flags="sync-create"></property>
+            <property name="hexpand">true</property>
+            <property name="vexpand">true</property>
+          </object>
+        </child>
+      </object>
+    </child>
+  </object>
+</interface>
@@ -47,22 +47,24 @@ static int
 svg_paintable_get_intrinsic_width (GdkPaintable *paintable)
 {
  SvgPaintable *self = SVG_PAINTABLE (paintable);
-  RsvgDimensionData data;
+  double width;

-  rsvg_handle_get_dimensions (self->handle, &data);
+  if (!rsvg_handle_get_intrinsic_size_in_pixels (self->handle, &width, NULL))
+    return 0;

-  return data.width;
+  return ceil (width);
 }

 static int
 svg_paintable_get_intrinsic_height (GdkPaintable *paintable)
 {
  SvgPaintable *self = SVG_PAINTABLE (paintable);
-  RsvgDimensionData data;
+  double height;

-  rsvg_handle_get_dimensions (self->handle, &data);
+  if (!rsvg_handle_get_intrinsic_size_in_pixels (self->handle, NULL, &height))
+    return 0;

-  return data.height;
+  return ceil (height);
 }

 static void
@@ -1,6 +1,11 @@
 /* Text View/Tabs
 *
 * GtkTextView can position text at fixed positions, using tabs.
+ * Tabs can specify alignment, and also allow aligning numbers
+ * on the decimal point.
+ *
+ * The example here has three tabs, with left, numeric and right
+ * alignment.
 */

 #include <gtk/gtk.h>
@@ -22,7 +27,7 @@ do_tabs (GtkWidget *do_widget)
      gtk_window_set_title (GTK_WINDOW (window), "Tabs");
      gtk_window_set_display (GTK_WINDOW (window),
                              gtk_widget_get_display (do_widget));
-      gtk_window_set_default_size (GTK_WINDOW (window), 330, 330);
+      gtk_window_set_default_size (GTK_WINDOW (window), 330, 130);
      gtk_window_set_resizable (GTK_WINDOW (window), FALSE);
      g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window);

@@ -35,17 +40,18 @@ do_tabs (GtkWidget *do_widget)

      tabs = pango_tab_array_new (3, TRUE);
      pango_tab_array_set_tab (tabs, 0, PANGO_TAB_LEFT, 0);
-      pango_tab_array_set_tab (tabs, 1, PANGO_TAB_LEFT, 100);
-      pango_tab_array_set_tab (tabs, 2, PANGO_TAB_LEFT, 200);
+      pango_tab_array_set_tab (tabs, 1, PANGO_TAB_DECIMAL, 150);
+      pango_tab_array_set_decimal_point (tabs, 1, '.');
+      pango_tab_array_set_tab (tabs, 2, PANGO_TAB_RIGHT, 290);
      gtk_text_view_set_tabs (GTK_TEXT_VIEW (view), tabs);
      pango_tab_array_free (tabs);

      buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));
-      gtk_text_buffer_set_text (buffer, "one\ttwo\tthree\nfour\tfive\tsix\nseven\teight\tnine", -1);
+      gtk_text_buffer_set_text (buffer, "one\t2.0\tthree\nfour\t5.555\tsix\nseven\t88.88\tnine", -1);

      sw = gtk_scrolled_window_new ();
      gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw),
-                                      GTK_POLICY_AUTOMATIC,
+                                      GTK_POLICY_NEVER,
                                      GTK_POLICY_AUTOMATIC);
      gtk_window_set_child (GTK_WINDOW (window), sw);
      gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (sw), view);
@@ -72,7 +72,7 @@ about_activated (GSimpleAction *action,
                          glib_micro_version);
  g_string_append_printf (s, "\tPango\t%s\n",
                          pango_version_string ());
-  g_string_append_printf (s, "\tGTK\t%d.%d.%d\n",
+  g_string_append_printf (s, "\tGTK \t%d.%d.%d\n",
                          gtk_get_major_version (),
                          gtk_get_minor_version (),
                          gtk_get_micro_version ());
@@ -79,7 +79,7 @@ activate_about (GSimpleAction *action,
                          glib_micro_version);
  g_string_append_printf (s, "\tPango\t%s\n",
                          pango_version_string ());
-  g_string_append_printf (s, "\tGTK\t%d.%d.%d\n",
+  g_string_append_printf (s, "\tGTK \t%d.%d.%d\n",
                          gtk_get_major_version (),
                          gtk_get_minor_version (),
                          gtk_get_micro_version ());
@@ -336,12 +336,39 @@ text_view_query_tooltip_cb (GtkWidget        *widget,
    }
 }

+static gboolean
+load_bytes (NodeEditorWindow *self,
+            GBytes           *bytes);
+
+static void
+load_error (NodeEditorWindow *self,
+            const char        *error_message)
+{
+  PangoLayout *layout;
+  GtkSnapshot *snapshot;
+  GskRenderNode *node;
+  GBytes *bytes;
+
+  layout = gtk_widget_create_pango_layout (GTK_WIDGET (self), error_message);
+  pango_layout_set_width (layout, 300 * PANGO_SCALE);
+  snapshot = gtk_snapshot_new ();
+  gtk_snapshot_append_layout (snapshot, layout, &(GdkRGBA) { 0.7, 0.13, 0.13, 1.0 });
+  node = gtk_snapshot_free_to_node (snapshot);
+  bytes = gsk_render_node_serialize (node);
+
+  load_bytes (self, bytes);
+
+  gsk_render_node_unref (node);
+  g_object_unref (layout);
+}
+
 static gboolean
 load_bytes (NodeEditorWindow *self,
            GBytes           *bytes)
 {
  if (!g_utf8_validate (g_bytes_get_data (bytes, NULL), g_bytes_get_size (bytes), NULL))
    {
+      load_error (self, "Invalid UTF-8");
      g_bytes_unref (bytes);
      return FALSE;
    }
@@ -359,11 +386,16 @@ static gboolean
 load_file_contents (NodeEditorWindow *self,
                    GFile            *file)
 {
+  GError *error = NULL;
  GBytes *bytes;

-  bytes = g_file_load_bytes (file, NULL, NULL, NULL);
+  bytes = g_file_load_bytes (file, NULL, NULL, &error);
  if (bytes == NULL)
-    return FALSE;
+    {
+      load_error (self, error->message);
+      g_clear_error (&error);
+      return FALSE;
+    }

  return load_bytes (self, bytes);
 }
@@ -473,17 +505,18 @@ node_editor_window_load (NodeEditorWindow *self,
 {
  GError *error = NULL;

+  g_clear_object (&self->file_monitor);
+
  if (!load_file_contents (self, file))
    return FALSE;

-  g_clear_object (&self->file_monitor);
  self->file_monitor = g_file_monitor_file (file, G_FILE_MONITOR_NONE, NULL, &error);

-
  if (error)
    {
      g_warning ("couldn't monitor file: %s", error->message);
      g_error_free (error);
+      g_clear_object (&self->file_monitor);
    }
  else
    {
@@ -161,9 +161,10 @@
    </child>
    <child>
      <object class="GtkPaned">
+        <property name="shrink-start-child">false</property>
        <property name="shrink-end-child">false</property>
        <property name="position">400</property>
-        <child>
+        <property name="start-child">
          <object class="GtkScrolledWindow">
            <property name="hscrollbar-policy">never</property>
            <property name="hexpand">1</property>
@@ -184,8 +185,8 @@
              </object>
            </child>
          </object>
-        </child>
-        <child>
+        </property>
+        <property name="end-child">
          <object class="GtkBox">
            <child>
              <object class="GtkScrolledWindow">
@@ -231,7 +232,7 @@
              </object>
            </child>
          </object>
-        </child>
+        </property>
      </object>
    </child>
  </template>
@@ -42,7 +42,7 @@ update_statusbar (void)
  const char *print_str;

  gtk_statusbar_pop (GTK_STATUSBAR (statusbar), 0);
-  
+
  gtk_text_buffer_get_iter_at_mark (buffer,
                                    &iter,
                                    gtk_text_buffer_get_insert (buffer));
@@ -56,7 +56,7 @@ update_statusbar (void)
      GtkPrintOperation *op = active_prints->data;
      print_str = gtk_print_operation_get_status_string (op);
    }
-  
+
  msg = g_strdup_printf ("%d, %d%s %s",
                         row, col,
 			 file_changed?" - Modified":"",
@@ -188,10 +188,10 @@ save_file (GFile *save_filename)
 					     "Error saving to file %s:\n%s",
 					     display_name,
 					     error->message);
-      
+
      g_signal_connect (error_dialog, "response", G_CALLBACK (gtk_window_destroy), NULL);
      gtk_widget_show (error_dialog);
-      
+
      g_error_free (error);
      g_object_unref (info);
    }
@@ -229,7 +229,7 @@ begin_print (GtkPrintOperation *operation,
  pango_font_description_free (desc);

  pango_layout_set_width (print_data->layout, width * PANGO_SCALE);
-  
+
  pango_layout_set_text (print_data->layout, print_data->text, -1);

  num_lines = pango_layout_get_line_count (print_data->layout);
@@ -241,7 +241,7 @@ begin_print (GtkPrintOperation *operation,
    {
      PangoRectangle ink_rect, logical_rect;
      double line_height;
-      
+
      layout_line = pango_layout_get_line (print_data->layout, line);
      pango_layout_line_get_extents (layout_line, &ink_rect, &logical_rect);

@@ -258,7 +258,7 @@ begin_print (GtkPrintOperation *operation,

  page_breaks = g_list_reverse (page_breaks);
  gtk_print_operation_set_n_pages (operation, g_list_length (page_breaks) + 1);
-  
+
  print_data->page_breaks = page_breaks;
 }

@@ -287,11 +287,11 @@ draw_page (GtkPrintOperation *operation,
    end = pango_layout_get_line_count (print_data->layout);
  else
    end = GPOINTER_TO_INT (pagebreak->data);
-    
+
  cr = gtk_print_context_get_cairo_context (context);

  cairo_set_source_rgb (cr, 0, 0, 0);
-  
+
  i = 0;
  start_pos = 0;
  iter = pango_layout_get_iter (print_data->layout);
@@ -307,12 +307,12 @@ draw_page (GtkPrintOperation *operation,

 	  pango_layout_iter_get_line_extents (iter, NULL, &logical_rect);
 	  baseline = pango_layout_iter_get_baseline (iter);
-	  
+
 	  if (i == start)
 	    start_pos = logical_rect.y / 1024.0;
-	  
+
 	  cairo_move_to (cr, logical_rect.x / 1024.0, baseline / 1024.0 - start_pos);
-	  
+
 	  pango_cairo_show_layout_line  (cr, line);
 	}
      i++;
@@ -383,9 +383,9 @@ print_done (GtkPrintOperation *op,
    {

      GtkWidget *error_dialog;
-      
+
      gtk_print_operation_get_error (op, &error);
-      
+
      error_dialog = gtk_message_dialog_new (GTK_WINDOW (main_window),
 					     GTK_DIALOG_DESTROY_WITH_PARENT,
 					     GTK_MESSAGE_ERROR,
@@ -405,13 +405,13 @@ print_done (GtkPrintOperation *op,
  g_free (print_data->text);
  g_free (print_data->font);
  g_free (print_data);
-  
+
  if (!gtk_print_operation_is_finished (op))
    {
      g_object_ref (op);
      active_prints = g_list_append (active_prints, op);
      update_statusbar ();
-      
+
      /* This ref is unref:ed when we get the final state change */
      g_signal_connect (op, "status_changed",
 			G_CALLBACK (status_changed_cb), NULL);
@@ -628,7 +628,7 @@ activate_about (GSimpleAction *action,
                          glib_micro_version);
  g_string_append_printf (sysinfo, "\tPango\t%s\n",
                          pango_version_string ());
-  g_string_append_printf (sysinfo, "\tGTK\t%d.%d.%d\n",
+  g_string_append_printf (sysinfo, "\tGTK \t%d.%d.%d\n",
                          gtk_get_major_version (),
                          gtk_get_minor_version (),
                          gtk_get_micro_version ());
@@ -78,6 +78,21 @@ change_theme_state (GSimpleAction *action,
                NULL);
 }

+static void
+change_fullscreen (GSimpleAction *action,
+                   GVariant      *state,
+                   gpointer       user_data)
+{
+  GtkWindow *window = user_data;
+
+  if (g_variant_get_boolean (state))
+    gtk_window_fullscreen (window);
+  else
+    gtk_window_unfullscreen (window);
+
+  g_simple_action_set_state (action, state);
+}
+
 static GtkWidget *page_stack;

 static void
@@ -283,7 +298,7 @@ activate_about (GSimpleAction *action,
                          glib_micro_version);
  g_string_append_printf (s, "\tPango\t%s\n",
                          pango_version_string ());
-  g_string_append_printf (s, "\tGTK\t%d.%d.%d\n",
+  g_string_append_printf (s, "\tGTK \t%d.%d.%d\n",
                          gtk_get_major_version (),
                          gtk_get_minor_version (),
                          gtk_get_micro_version ());
@@ -384,7 +399,7 @@ print_operation_done (GtkPrintOperation       *op,
      g_clear_error (&error);
      break;
    case GTK_PRINT_OPERATION_RESULT_APPLY:
-      break; 
+      break;
    case GTK_PRINT_OPERATION_RESULT_CANCEL:
      g_print ("Printing was canceled\n");
      break;
@@ -2012,11 +2027,12 @@ activate (GApplication *app)
  GMenuModel *model;
  static GActionEntry win_entries[] = {
    { "dark", NULL, NULL, "false", change_dark_state },
-    { "theme", NULL, "s", "'current'", change_theme_state }, 
+    { "theme", NULL, "s", "'current'", change_theme_state },
    { "transition", NULL, NULL, "true", change_transition_state },
    { "search", activate_search, NULL, NULL, NULL },
    { "delete", activate_delete, NULL, NULL, NULL },
    { "busy", get_busy, NULL, NULL, NULL },
+    { "fullscreen", NULL, NULL, "false", change_fullscreen },
    { "background", activate_background, NULL, NULL, NULL },
    { "open", activate_open, NULL, NULL, NULL },
    { "record", activate_record, NULL, NULL, NULL },
@@ -2182,7 +2198,7 @@ activate (GApplication *app)
  g_object_set_data (G_OBJECT (window), "searchbar", widget);

  widget = (GtkWidget *)gtk_builder_get_object (builder, "infobar");
-  g_signal_connect (widget, "response", G_CALLBACK (info_bar_response), NULL); 
+  g_signal_connect (widget, "response", G_CALLBACK (info_bar_response), NULL);
  g_object_set_data (G_OBJECT (window), "infobar", widget);

  dialog = (GtkWidget *)gtk_builder_get_object (builder, "info_dialog");
@@ -6,6 +6,10 @@
        <attribute name="label" translatable="yes">Get Busy</attribute>
        <attribute name="action">win.busy</attribute>
      </item>
+      <item>
+        <attribute name="label" translatable="yes">Fullscreen</attribute>
+        <attribute name="action">win.fullscreen</attribute>
+      </item>
      <submenu>
        <attribute name="label" translatable="yes">Style</attribute>
        <section>
@@ -3,6 +3,7 @@ version = "@version@"
 browse_url = "https://gitlab.gnome.org/GNOME/gtk/"
 repository_url = "https://gitlab.gnome.org/GNOME/gtk.git"
 website_url = "https://www.gtk.org"
+docs_url = "https://docs.gtk.org/gdk4/"
 authors = "GTK Development Team"
 logo_url = "gtk-logo.svg"
 license = "LGPL-2.1-or-later"
@@ -3,6 +3,7 @@ version = "@version@"
 browse_url = "https://gitlab.gnome.org/GNOME/gtk/"
 repository_url = "https://gitlab.gnome.org/GNOME/gtk.git"
 website_url = "https://www.gtk.org"
+docs_url = "https://docs.gtk.org/gsk4/"
 authors = "GTK Development Team"
 logo_url = "gtk-logo.svg"
 license = "LGPL-2.1-or-later"
@@ -3,6 +3,7 @@ version = "@version@"
 browse_url = "https://gitlab.gnome.org/GNOME/gtk/"
 repository_url = "https://gitlab.gnome.org/GNOME/gtk.git"
 website_url = "https://www.gtk.org"
+docs_url = "https://docs.gtk.org/gtk4/"
 authors = "GTK Development Team"
 logo_url = "gtk-logo.svg"
 license = "LGPL-2.1-or-later"
@@ -410,8 +410,8 @@ have been removed. Update your code accordingly.
 Any APIs that deal with global (or root) coordinates have been
 removed in GTK 4, since not all backends support them. You should
 replace your use of such APIs with surface-relative equivalents.
-Examples of this are `gdk_surface_get_origin()`, `gdk_surface_move()`
-or `gdk_event_get_root_coords()`.
+Examples of such removed APIs are `gdk_window_get_origin()`,
+`gdk_window_move()` or `gdk_event_get_root_coords()`.

 ### Adapt to `GdkKeymap` API changes

@@ -133,7 +133,7 @@ gtk_text_buffer_set_text (buffer, "Hello, this is some text", -1);
 provider = gtk_css_provider_new ();
 gtk_css_provider_load_from_data (provider,
                                 "textview {"
-                                 " font: 15 serif;"
+                                 " font: 15px serif;"
                                 "  color: green;"
                                 "}",
                                 -1);
@@ -149,9 +149,9 @@ gtk_text_view_set_left_margin (GTK_TEXT_VIEW (view), 30);
 tag = gtk_text_buffer_create_tag (buffer, "blue_foreground",
                                  "foreground", "blue",
                                  NULL);
-gtk_text_buffer_get_iter_at_offset (buffer, &amp;start, 7);
-gtk_text_buffer_get_iter_at_offset (buffer, &amp;end, 12);
-gtk_text_buffer_apply_tag (buffer, tag, &amp;start, &amp;end);
+gtk_text_buffer_get_iter_at_offset (buffer, &start, 7);
+gtk_text_buffer_get_iter_at_offset (buffer, &end, 12);
+gtk_text_buffer_apply_tag (buffer, tag, &start, &end);
 ```

 The `gtk4-demo` application that comes with
@@ -1438,31 +1438,6 @@ describe_egl_config (EGLDisplay egl_display,
 }
 #endif

-/*<private>
- * gdk_display_get_egl_display:
- * @self: a display
- *
- * Retrieves the EGL display connection object for the given GDK display.
- *
- * This function returns `NULL` if GL is not supported or GDK is using
- * a different OpenGL framework than EGL.
- *
- * Returns: (nullable): the EGL display object
- */
-gpointer
-gdk_display_get_egl_display (GdkDisplay *self)
-{
-  GdkDisplayPrivate *priv = gdk_display_get_instance_private (self);
-
-  g_return_val_if_fail (GDK_IS_DISPLAY (self), NULL);
-
-  if (!priv->egl_display &&
-      !gdk_display_prepare_gl (self, NULL))
-    return NULL;
-
-  return priv->egl_display;
-}
-
 gpointer
 gdk_display_get_egl_config (GdkDisplay *self)
 {
@@ -1789,6 +1764,35 @@ gdk_display_init_egl (GdkDisplay  *self,
 }
 #endif

+/*<private>
+ * gdk_display_get_egl_display:
+ * @self: a display
+ *
+ * Retrieves the EGL display connection object for the given GDK display.
+ *
+ * This function returns `NULL` if GL is not supported or GDK is using
+ * a different OpenGL framework than EGL.
+ *
+ * Returns: (nullable): the EGL display object
+ */
+gpointer
+gdk_display_get_egl_display (GdkDisplay *self)
+{
+  GdkDisplayPrivate *priv = gdk_display_get_instance_private (self);
+
+  g_return_val_if_fail (GDK_IS_DISPLAY (self), NULL);
+
+#ifdef HAVE_EGL
+  if (!priv->egl_display &&
+      !gdk_display_prepare_gl (self, NULL))
+    return NULL;
+
+  return priv->egl_display;
+#else
+  return NULL;
+#endif
+}
+
 GdkDebugFlags
 gdk_display_get_debug_flags (GdkDisplay *display)
 {
@@ -28,8 +28,7 @@
 * `GdkPixbuf`, or a Cairo surface, or other pixel data.
 *
 * The ownership of the pixel data is transferred to the `GdkTexture`
- * instance; you can only make a copy of it, via [method@Gdk.Texture.download]
- * or [method@Gdk.Texture.download_float].
+ * instance; you can only make a copy of it, via [method@Gdk.Texture.download].
 *
 * `GdkTexture` is an immutable object: That means you cannot change
 * anything about it other than increasing the reference count via
@@ -743,48 +742,6 @@ gdk_texture_download (GdkTexture *texture,
                           stride);
 }

-/**
- * gdk_texture_download_float:
- * @texture: a `GdkTexture`
- * @data: (array): pointer to enough memory to be filled with the
- *   downloaded data of @texture
- * @stride: rowstride in elements, will usually be equal to
- *   gdk_texture_get_width() * 4
- *
- * Downloads the @texture into local memory in a high dynamic range format.
- *
- * This may be an expensive operation, as the actual texture data
- * may reside on a GPU or on a remote display server and because the data
- * may need to be upsampled if it was not already available in this
- * format.
- *
- * You may want to use [method@Gdk.Texture.download] instead if you don't
- * need high dynamic range support.
- *
- * The data format of the downloaded data is equivalent to
- * GDK_MEMORY_R32G32B32A32_FLOAT_PREMULTIPLIED, so every downloaded
- * pixel requires 16 bytes of memory.
- *
- * Note that the caller is responsible to provide sufficiently
- * aligned memory to access the resulting data directly as floats.
- *
- * Since: 4.6
- */
-void
-gdk_texture_download_float (GdkTexture *texture,
-                            float      *data,
-                            gsize       stride)
-{
-  g_return_if_fail (GDK_IS_TEXTURE (texture));
-  g_return_if_fail (data != NULL);
-  g_return_if_fail (stride >= gdk_texture_get_width (texture) * 4);
-
-  gdk_texture_do_download (texture,
-                           GDK_MEMORY_R32G32B32A32_FLOAT_PREMULTIPLIED,
-                           (guchar *) data,
-                           stride);
-}
-
 GdkMemoryFormat
 gdk_texture_get_format (GdkTexture *self)
 {
@@ -727,6 +727,13 @@ gdk_toplevel_begin_move (GdkToplevel *toplevel,
                                                 timestamp);
 }

+/**
+ * gdk_toplevel_titlebar_gesture:
+ * @toplevel: a `GdkToplevel`
+ * @gesture: a `GdkTitlebarGesture`
+ *
+ * Since: 4.4
+ */
 gboolean
 gdk_toplevel_titlebar_gesture (GdkToplevel        *toplevel,
                               GdkTitlebarGesture  gesture)
@@ -115,6 +115,14 @@ typedef enum
  GDK_TOPLEVEL_STATE_LEFT_RESIZABLE   = 1 << 15
 } GdkToplevelState;

+/**
+ * GdkTitlebarGesture:
+ * @GDK_TITLEBAR_GESTURE_DOUBLE_CLICK:
+ * @GDK_TITLEBAR_GESTURE_RIGHT_CLICK:
+ * @GDK_TITLEBAR_GESTURE_MIDDLE_CLICK:
+ *
+ * Since: 4.4
+ */
 typedef enum
 {
  GDK_TITLEBAR_GESTURE_DOUBLE_CLICK   = 1,
@@ -3606,6 +3606,10 @@ tablet_tool_handle_proximity_out (void                      *data,
  g_object_unref (tablet->pointer_info.focus);
  tablet->pointer_info.focus = NULL;

+  tablet->pointer_info.button_modifiers &=
+    ~(GDK_BUTTON1_MASK | GDK_BUTTON2_MASK | GDK_BUTTON3_MASK |
+      GDK_BUTTON4_MASK | GDK_BUTTON5_MASK);
+
  gdk_device_update_tool (tablet->stylus_device, NULL);
  g_clear_object (&tablet->pointer_info.cursor);
 }
@@ -3621,7 +3625,6 @@ tablet_create_button_event_frame (GdkWaylandTabletData *tablet,
                                  GdkEventType          evtype,
                                  guint                 button)
 {
-  GdkWaylandSeat *seat = GDK_WAYLAND_SEAT (tablet->seat);
  GdkEvent *event;

  event = gdk_button_event_new (evtype,
@@ -3629,7 +3632,7 @@ tablet_create_button_event_frame (GdkWaylandTabletData *tablet,
                                tablet->logical_device,
                                tablet->current_tool->tool,
                                tablet->pointer_info.time,
-                                device_get_modifiers (seat->logical_pointer),
+                                device_get_modifiers (tablet->logical_device),
                                button,
                                tablet->pointer_info.surface_x,
                                tablet->pointer_info.surface_y,
@@ -38,7 +38,7 @@
 #include <dwmapi.h>

 #include "gdkwin32langnotification.h"
-#ifdef GDK_WIN32_ENABLE_EGL
+#ifdef HAVE_EGL
 # include <epoxy/egl.h>
 #endif

@@ -645,14 +645,6 @@ gdk_win32_display_dispose (GObject *object)
 {
  GdkWin32Display *display_win32 = GDK_WIN32_DISPLAY (object);

-#ifdef GDK_WIN32_ENABLE_EGL
-  if (display_win32->egl_disp != EGL_NO_DISPLAY)
-    {
-      eglTerminate (display_win32->egl_disp);
-      display_win32->egl_disp = EGL_NO_DISPLAY;
-    }
-#endif
-
  if (display_win32->hwnd != NULL)
    {
      if (display_win32->dummy_context_wgl.hglrc != NULL)
@@ -1146,23 +1138,54 @@ gdk_win32_display_get_setting (GdkDisplay  *display,
  return _gdk_win32_get_setting (name, value);
 }

+#ifndef EGL_PLATFORM_ANGLE_ANGLE
+#define EGL_PLATFORM_ANGLE_ANGLE          0x3202
+#endif
+
 static gboolean
 gdk_win32_display_init_gl_backend (GdkDisplay  *display,
                                   GError     **error)
 {
  gboolean result = FALSE;
+  GdkWin32Display *display_win32 = GDK_WIN32_DISPLAY (display);

-  /* No env vars set, do the regular GL initialization, first WGL and then EGL,
+  if (display_win32->dummy_context_wgl.hdc == NULL)
+    display_win32->dummy_context_wgl.hdc = GetDC (display_win32->hwnd);
+
+  /*
+   * No env vars set, do the regular GL initialization, first WGL and then EGL,
   * as WGL is the more tried-and-tested configuration.
   */

-  result = gdk_win32_display_init_wgl (display, error);
+#ifdef HAVE_EGL
+  /*
+   * Disable defaulting to EGL for now, since shaders need to be fixed for
+   * usage against libANGLE EGL.  EGL is used more as a compatibility layer
+   * on Windows rather than being a native citizen on Windows
+   */
+  if (_gdk_debug_flags & GDK_DEBUG_GL_EGL)
+    result = gdk_display_init_egl (display,
+                                   EGL_PLATFORM_ANGLE_ANGLE,
+                                   display_win32->dummy_context_wgl.hdc,
+                                   FALSE,
+                                   error);
+#endif

-#ifdef GDK_WIN32_ENABLE_EGL
  if (!result)
    {
      g_clear_error (error);
-      result = gdk_win32_display_init_egl (display, error);
+      result = gdk_win32_display_init_wgl (display, error);
+    }
+
+#ifdef HAVE_EGL
+  if (!result)
+    {
+      g_clear_error (error);
+      result = gdk_display_init_egl (display,
+                                     EGL_PLATFORM_ANGLE_ANGLE,
+                                     display_win32->dummy_context_wgl.hdc,
+                                     TRUE,
+                                     error);
    }
 #endif

@@ -1179,13 +1202,12 @@ gdk_win32_display_init_gl (GdkDisplay  *display,
  if (!gdk_win32_display_init_gl_backend (display, error))
    return NULL;

-#ifdef GDK_WIN32_ENABLE_EGL
-  if (display_win32->egl_disp)
-    gl_context = g_object_new (GDK_TYPE_WIN32_GL_CONTEXT_EGL, "display", display, NULL);
-  else
-#endif
  if (display_win32->wgl_pixel_format != 0)
    gl_context = g_object_new (GDK_TYPE_WIN32_GL_CONTEXT_WGL, "display", display, NULL);
+#ifdef HAVE_EGL
+  else if (gdk_display_get_egl_display (display))
+    gl_context = g_object_new (GDK_TYPE_WIN32_GL_CONTEXT_EGL, "display", display, NULL);
+#endif

  g_return_val_if_fail (gl_context != NULL, NULL);

@@ -1203,23 +1225,9 @@ gdk_win32_display_init_gl (GdkDisplay  *display,
 gpointer
 gdk_win32_display_get_egl_display (GdkDisplay *display)
 {
-#ifdef GDK_WIN32_ENABLE_EGL
-  GdkWin32Display *display_win32;
-#endif
-
  g_return_val_if_fail (GDK_IS_WIN32_DISPLAY (display), NULL);

-#ifdef GDK_WIN32_ENABLE_EGL
-  display_win32 = GDK_WIN32_DISPLAY (display);
-
-  if (display_win32->wgl_pixel_format != 0)
-    return NULL;
-
-  return display_win32->egl_disp;
-#else
-  /* no EGL support */
-  return NULL;
-#endif
+  return gdk_display_get_egl_display (display);
 }

 static void
@@ -25,7 +25,7 @@
 #include "gdkwin32screen.h"
 #include "gdkwin32cursor.h"
 
-#ifdef GDK_WIN32_ENABLE_EGL
+#ifdef HAVE_EGL
 # include <epoxy/egl.h>
 #endif

@@ -135,14 +135,6 @@ struct _GdkWin32Display
  int wgl_pixel_format;
  guint gl_version;

-#ifdef GDK_WIN32_ENABLE_EGL
-  /* EGL (Angle) Items */
-  guint egl_version;
-  EGLDisplay egl_disp;
-  EGLConfig egl_config;
-  HDC hdc_egl_temp;
-#endif
-
  GListModel *monitors;

  guint hasWglARBCreateContext : 1;
@@ -151,7 +143,7 @@ struct _GdkWin32Display
  guint hasWglARBPixelFormat : 1;
  guint hasWglARBmultisample : 1;

-#ifdef GDK_WIN32_ENABLE_EGL
+#ifdef HAVE_EGL
  guint hasEglKHRCreateContext : 1;
  guint hasEglSurfacelessContext : 1;
  EGLint egl_min_swap_interval;
@@ -53,30 +53,6 @@ typedef struct _GdkWin32GLContextClass    GdkWin32GLContextEGLClass;

 G_DEFINE_TYPE (GdkWin32GLContextEGL, gdk_win32_gl_context_egl, GDK_TYPE_WIN32_GL_CONTEXT)

-static void
-gdk_win32_gl_context_egl_dispose (GObject *gobject)
-{
-  GdkGLContext *context = GDK_GL_CONTEXT (gobject);
-  GdkWin32GLContextEGL *context_egl = GDK_WIN32_GL_CONTEXT_EGL (gobject);
-  GdkWin32Display *display_win32 = GDK_WIN32_DISPLAY (gdk_gl_context_get_display (context));
-  GdkSurface *surface = gdk_gl_context_get_surface (context);
-
-  if (display_win32 != NULL)
-    {
-      if (eglGetCurrentContext () == context_egl->egl_context)
-        eglMakeCurrent(display_win32->egl_disp, EGL_NO_SURFACE, EGL_NO_SURFACE,
-                       EGL_NO_CONTEXT);
-
-      GDK_NOTE (OPENGL, g_message ("Destroying EGL (ANGLE) context"));
-
-      eglDestroyContext (display_win32->egl_disp,
-                         context_egl->egl_context);
-      context_egl->egl_context = EGL_NO_CONTEXT;
-    }
-
-  G_OBJECT_CLASS (gdk_win32_gl_context_egl_parent_class)->dispose (gobject);
-}
-
 static gboolean
 is_egl_force_redraw (GdkSurface *surface)
 {
@@ -109,7 +85,7 @@ gdk_win32_gl_context_egl_end_frame (GdkDrawContext *draw_context,
  GdkGLContext *context = GDK_GL_CONTEXT (draw_context);
  GdkWin32GLContextEGL *context_egl = GDK_WIN32_GL_CONTEXT_EGL (context);
  GdkSurface *surface = gdk_gl_context_get_surface (context);
-  GdkWin32Display *display_win32 = (GDK_WIN32_DISPLAY (gdk_gl_context_get_display (context)));
+  GdkDisplay *display = gdk_gl_context_get_display (context);
  cairo_rectangle_int_t whole_window;
  EGLSurface egl_surface;

@@ -122,7 +98,7 @@ gdk_win32_gl_context_egl_end_frame (GdkDrawContext *draw_context,
 					 gdk_surface_get_height (surface)
                   };

-  egl_surface = gdk_win32_surface_get_egl_surface (surface, display_win32->egl_config, FALSE);
+  egl_surface = gdk_surface_get_egl_surface (surface);

  if (is_egl_force_redraw (surface))
    {
@@ -135,338 +111,7 @@ gdk_win32_gl_context_egl_end_frame (GdkDrawContext *draw_context,
      reset_egl_force_redraw (surface);
    }

-  eglSwapBuffers (display_win32->egl_disp, egl_surface);
-}
-
-#ifndef EGL_PLATFORM_ANGLE_ANGLE
-#define EGL_PLATFORM_ANGLE_ANGLE          0x3202
-#endif
-
-#ifndef EGL_PLATFORM_ANGLE_TYPE_ANGLE
-#define EGL_PLATFORM_ANGLE_TYPE_ANGLE     0x3203
-#endif
-
-#ifndef EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE
-#define EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE 0x3208
-#endif
-
-static EGLDisplay
-gdk_win32_get_egl_display (GdkWin32Display *display)
-{
-  EGLDisplay disp;
-
-  if (epoxy_has_egl_extension (NULL, "EGL_EXT_platform_base"))
-    {
-      PFNEGLGETPLATFORMDISPLAYEXTPROC getPlatformDisplay = (void *) eglGetProcAddress ("eglGetPlatformDisplayEXT");
-      if (getPlatformDisplay)
-        {
-          EGLint disp_attr[] = {EGL_PLATFORM_ANGLE_TYPE_ANGLE, EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE, EGL_NONE};
-
-          disp = getPlatformDisplay (EGL_PLATFORM_ANGLE_ANGLE, display->hdc_egl_temp, disp_attr);
-
-          if (disp != EGL_NO_DISPLAY)
-            return disp;
-        }
-    }
-
-  return eglGetDisplay (display->hdc_egl_temp);
-}
-
-#define MAX_EGL_ATTRS   30
-
-static gboolean
-find_eglconfig_for_window (GdkWin32Display  *display,
-                           EGLConfig        *egl_config_out,
-                           EGLint           *min_swap_interval_out,
-                           GError          **error)
-{
-  EGLint attrs[MAX_EGL_ATTRS];
-  EGLint count;
-  EGLConfig *configs, chosen_config;
-
-  int i = 0;
-
-  EGLDisplay egl_disp = display->egl_disp;
-
-  attrs[i++] = EGL_CONFORMANT;
-  attrs[i++] = EGL_OPENGL_ES2_BIT;
-  attrs[i++] = EGL_SURFACE_TYPE;
-  attrs[i++] = EGL_WINDOW_BIT;
-
-  attrs[i++] = EGL_COLOR_BUFFER_TYPE;
-  attrs[i++] = EGL_RGB_BUFFER;
-
-  attrs[i++] = EGL_RED_SIZE;
-  attrs[i++] = 1;
-  attrs[i++] = EGL_GREEN_SIZE;
-  attrs[i++] = 1;
-  attrs[i++] = EGL_BLUE_SIZE;
-  attrs[i++] = 1;
-  attrs[i++] = EGL_ALPHA_SIZE;
-  attrs[i++] = 1;
-
-  attrs[i++] = EGL_NONE;
-  g_assert (i < MAX_EGL_ATTRS);
-
-  if (!eglChooseConfig (display->egl_disp, attrs, NULL, 0, &count) || count < 1)
-    {
-      g_set_error_literal (error, GDK_GL_ERROR,
-                           GDK_GL_ERROR_UNSUPPORTED_FORMAT,
-                           _("No available configurations for the given pixel format"));
-      return FALSE;
-    }
-
-  configs = g_new (EGLConfig, count);
-
-  if (!eglChooseConfig (display->egl_disp, attrs, configs, count, &count) || count < 1)
-    {
-      g_set_error_literal (error, GDK_GL_ERROR,
-                           GDK_GL_ERROR_UNSUPPORTED_FORMAT,
-                           _("No available configurations for the given pixel format"));
-      return FALSE;
-    }
-
-  /* Pick first valid configuration i guess? */
-  chosen_config = configs[0];
-
-  if (!eglGetConfigAttrib (display->egl_disp, chosen_config,
-                           EGL_MIN_SWAP_INTERVAL, min_swap_interval_out))
-    {
-      g_set_error_literal (error, GDK_GL_ERROR,
-                           GDK_GL_ERROR_NOT_AVAILABLE,
-                           "Could not retrieve the minimum swap interval");
-      g_free (configs);
-      return FALSE;
-    }
-
-  if (egl_config_out != NULL)
-    *egl_config_out = chosen_config;
-
-  g_free (configs);
-
-  return TRUE;
-}
-
-gboolean
-gdk_win32_display_init_egl (GdkDisplay  *display,
-                            GError     **error)
-{
-  GdkWin32Display *display_win32 = GDK_WIN32_DISPLAY (display);
-  int best_idx = 0;
-  EGLDisplay egl_disp;
-
-  if (!gdk_gl_backend_can_be_used (GDK_GL_EGL, error))
-    return FALSE;
-
-  if (display_win32->egl_disp != EGL_NO_DISPLAY)
-    return TRUE;
-  
-  egl_disp = gdk_win32_get_egl_display (display_win32);
-
-  if (egl_disp == EGL_NO_DISPLAY)
-    return FALSE;
-
-  if (!eglInitialize (egl_disp, NULL, NULL))
-    {
-      eglTerminate (egl_disp);
-      egl_disp = EGL_NO_DISPLAY;
-      g_set_error_literal (error, GDK_GL_ERROR,
-                           GDK_GL_ERROR_NOT_AVAILABLE,
-                           _("No GL implementation is available"));
-      return FALSE;
-    }
-
-  display_win32->egl_disp = egl_disp;
-  display_win32->egl_version = epoxy_egl_version (egl_disp);
-
-  eglBindAPI (EGL_OPENGL_ES_API);
-
-  display_win32->hasEglSurfacelessContext =
-    epoxy_has_egl_extension (egl_disp, "EGL_KHR_surfaceless_context");
-
-  GDK_NOTE (OPENGL,
-            g_print ("EGL API version %d.%d found\n"
-                     " - Vendor: %s\n"
-                     " - Checked extensions:\n"
-                     "\t* EGL_KHR_surfaceless_context: %s\n",
-                     display_win32->egl_version / 10,
-                     display_win32->egl_version % 10,
-                     eglQueryString (display_win32->egl_disp, EGL_VENDOR),
-                     display_win32->hasEglSurfacelessContext ? "yes" : "no"));
-
-  return find_eglconfig_for_window (display_win32, &display_win32->egl_config,
-                                   &display_win32->egl_min_swap_interval, error);
-}
-
-#define N_EGL_ATTRS     16
-
-static EGLContext
-create_egl_context (EGLDisplay    display,
-                    EGLConfig     config,
-                    GdkGLContext *share,
-                    int           flags,
-                    int           major,
-                    int           minor,
-                    gboolean     *is_legacy)
-{
-  EGLContext ctx;
-  EGLint context_attribs[N_EGL_ATTRS];
-  int i = 0;
-
-  /* ANGLE does not support the GL_OES_vertex_array_object extension, so we need to use ES3 directly */
-  context_attribs[i++] = EGL_CONTEXT_CLIENT_VERSION;
-  context_attribs[i++] = 3;
-
-  /* Specify the flags */
-  context_attribs[i++] = EGL_CONTEXT_FLAGS_KHR;
-  context_attribs[i++] = flags;
-
-  context_attribs[i++] = EGL_NONE;
-  g_assert (i < N_EGL_ATTRS);
-
-  ctx = eglCreateContext (display,
-                          config,
-                          share != NULL ? GDK_WIN32_GL_CONTEXT_EGL (share)->egl_context
-                                        : EGL_NO_CONTEXT,
-                          context_attribs);
-
-  if (ctx != EGL_NO_CONTEXT)
-    GDK_NOTE (OPENGL, g_message ("Created EGL context[%p]", ctx));
-
-  return ctx;
-}
-
-static gboolean
-gdk_win32_gl_context_egl_realize (GdkGLContext *context,
-                                  GError **error)
-{
-  GdkWin32GLContextEGL *context_egl = GDK_WIN32_GL_CONTEXT_EGL (context);
-
-  gboolean debug_bit, compat_bit, legacy_bit;
-  gboolean use_es = FALSE;
-  EGLContext egl_context;
-  EGLContext ctx;
-
-  /* request flags and specific versions for core (3.2+) WGL context */
-  int flags = 0;
-  int major = 0;
-  int minor = 0;
-
-  GdkSurface *surface = gdk_gl_context_get_surface (context);
-  GdkWin32Surface *impl = GDK_WIN32_SURFACE (surface);
-  GdkDisplay *display = gdk_gl_context_get_display (context);
-  GdkWin32Display *display_win32 = GDK_WIN32_DISPLAY (display);
-  GdkGLContext *share = gdk_display_get_gl_context (display);
-
-  gdk_gl_context_get_required_version (context, &major, &minor);
-  debug_bit = gdk_gl_context_get_debug_enabled (context);
-  compat_bit = gdk_gl_context_get_forward_compatible (context);
-
-  /*
-   * A legacy context cannot be shared with core profile ones, so this means we
-   * must stick to a legacy context if the shared context is a legacy context
-   */
-
-  /* if GDK_GL_LEGACY is set, we default to a legacy context */
-  legacy_bit = GDK_DISPLAY_DEBUG_CHECK (display, GL_LEGACY) ?
-               TRUE :
-			   share != NULL && gdk_gl_context_is_legacy (share);
-
-  use_es = GDK_DISPLAY_DEBUG_CHECK (display, GL_GLES) ||
-    (share != NULL && gdk_gl_context_get_use_es (share));
-
-  if (debug_bit)
-    flags |= EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR;
-  if (compat_bit)
-    flags |= EGL_CONTEXT_OPENGL_FORWARD_COMPATIBLE_BIT_KHR;
-
-  GDK_NOTE (OPENGL, g_message ("Creating EGL context version %d.%d (debug:%s, forward:%s, legacy:%s)",
-                               major, minor,
-                               debug_bit ? "yes" : "no",
-                               compat_bit ? "yes" : "no",
-                               legacy_bit ? "yes" : "no"));
-
-  ctx = create_egl_context (display_win32->egl_disp,
-                            display_win32->egl_config,
-                            share,
-                            flags,
-                            major,
-                            minor,
-                           &legacy_bit);
-
-  if (ctx == EGL_NO_CONTEXT)
-    {
-      g_set_error_literal (error, GDK_GL_ERROR,
-                           GDK_GL_ERROR_NOT_AVAILABLE,
-                           _("Unable to create a GL context"));
-      return FALSE;
-    }
-
-  GDK_NOTE (OPENGL, g_print ("Created EGL context[%p]\n", ctx));
-
-  context_egl->egl_context = ctx;
-
-  /* We are using GLES here */
-  gdk_gl_context_set_use_es (context, TRUE);
-
-  /* Ensure that any other context is created with a legacy bit set */
-  gdk_gl_context_set_is_legacy (context, legacy_bit);
-
-  return TRUE;
-}
-
-static gboolean
-gdk_win32_gl_context_egl_clear_current (GdkGLContext *context)
-{
-  GdkDisplay *display = gdk_gl_context_get_display (context);
-  GdkWin32Display *display_win32 = GDK_WIN32_DISPLAY (display);
-
-  if (display_win32->egl_disp != EGL_NO_DISPLAY)
-    return eglMakeCurrent (display_win32->egl_disp,
-                           EGL_NO_SURFACE, 
-                           EGL_NO_SURFACE, 
-                           EGL_NO_CONTEXT);
-  else
-    return TRUE;
-}
-
-static gboolean
-gdk_win32_gl_context_egl_make_current (GdkGLContext *context,
-                                       gboolean      surfaceless)
-{
-  GdkWin32GLContextEGL *context_egl = GDK_WIN32_GL_CONTEXT_EGL (context);
-  GdkDisplay *display = gdk_gl_context_get_display (context);
-  GdkWin32Display *display_win32 = GDK_WIN32_DISPLAY (display);
-  GdkSurface *surface;
-
-  gboolean do_frame_sync = FALSE;
-
-  EGLSurface egl_surface;
-
-  surface = gdk_gl_context_get_surface (context);
-
-  if (!surfaceless)
-    egl_surface = gdk_win32_surface_get_egl_surface (surface, display_win32->egl_config, FALSE);
-  else
-    {
-      if (display_win32->hasEglSurfacelessContext)
-        egl_surface = EGL_NO_SURFACE;
-      else
-        egl_surface = gdk_win32_surface_get_egl_surface (surface, display_win32->egl_config, TRUE);
-    }
-
-  if (!eglMakeCurrent (display_win32->egl_disp,
-                       egl_surface,
-                       egl_surface,
-                       context_egl->egl_context))
-    return FALSE;
-
-  if (display_win32->egl_min_swap_interval == 0)
-    eglSwapInterval (display_win32->egl_disp, 0);
-  else
-    g_debug ("Can't disable GL swap interval");
-
-  return TRUE;
+  eglSwapBuffers (gdk_display_get_egl_display (display), egl_surface);
 }

 static void
@@ -484,18 +129,11 @@ gdk_win32_gl_context_egl_class_init (GdkWin32GLContextClass *klass)
 {
  GdkGLContextClass *context_class = GDK_GL_CONTEXT_CLASS(klass);
  GdkDrawContextClass *draw_context_class = GDK_DRAW_CONTEXT_CLASS(klass);
-  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);

  context_class->backend_type = GDK_GL_EGL;

-  context_class->realize = gdk_win32_gl_context_egl_realize;
-  context_class->make_current = gdk_win32_gl_context_egl_make_current;
-  context_class->clear_current = gdk_win32_gl_context_egl_clear_current;
-
  draw_context_class->begin_frame = gdk_win32_gl_context_egl_begin_frame;
  draw_context_class->end_frame = gdk_win32_gl_context_egl_end_frame;
-
-  gobject_class->dispose = gdk_win32_gl_context_egl_dispose;
 }

 static void
@@ -226,9 +226,6 @@ gdk_init_dummy_wgl_context (GdkWin32Display *display_win32)
  gboolean set_pixel_format_result = FALSE;
  int best_idx = 0;

-  if (display_win32->dummy_context_wgl.hdc == NULL)
-    display_win32->dummy_context_wgl.hdc = GetDC (display_win32->hwnd);
-
  memset (&pfd, 0, sizeof (PIXELFORMATDESCRIPTOR));

  best_idx = get_wgl_pfd (display_win32->dummy_context_wgl.hdc, &pfd, NULL);
@@ -40,7 +40,7 @@
 #include <cairo.h>
 #include <epoxy/wgl.h>

-#ifdef GDK_WIN32_ENABLE_EGL
+#ifdef HAVE_EGL
 # include <epoxy/egl.h>
 #endif

@@ -24,7 +24,7 @@
 #include <epoxy/gl.h>
 #include <epoxy/wgl.h>

-#ifdef GDK_WIN32_ENABLE_EGL
+#ifdef HAVE_EGL
 # include <epoxy/egl.h>
 #endif

@@ -638,6 +638,7 @@ _gdk_win32_display_create_surface (GdkDisplay     *display,
      return NULL;
    }

+  gdk_surface_set_egl_native_window (surface, (void *) impl->handle);
  if (display_win32->tablet_input_api == GDK_WIN32_TABLET_INPUT_API_WINPOINTER)
    gdk_winpointer_initialize_surface (surface);

@@ -685,22 +686,6 @@ gdk_win32_surface_destroy (GdkSurface *window,
      gdk_win32_surface_set_transient_for (child, NULL);
    }

-#ifdef GDK_WIN32_ENABLE_EGL
-  GdkWin32Display *display = GDK_WIN32_DISPLAY (gdk_surface_get_display (window));
-
-  /* Get rid of any EGLSurfaces that we might have created */
-  if (surface->egl_surface != EGL_NO_SURFACE)
-    {
-      eglDestroySurface (display->egl_disp, surface->egl_surface);
-      surface->egl_surface = EGL_NO_SURFACE;
-    }
-  if (surface->egl_dummy_surface != EGL_NO_SURFACE)
-    {
-      eglDestroySurface (display->egl_disp, surface->egl_dummy_surface);
-      surface->egl_dummy_surface = EGL_NO_SURFACE;
-    }
-#endif
-
  /* Remove ourself from our transient owner */
  if (surface->transient_owner != NULL)
    {
@@ -709,6 +694,7 @@ gdk_win32_surface_destroy (GdkSurface *window,

  if (!foreign_destroy)
    {
+      gdk_surface_set_egl_native_window (window, NULL);
      window->destroyed = TRUE;
      DestroyWindow (GDK_SURFACE_HWND (window));
    }
@@ -2291,95 +2277,87 @@ stash_window (GdkSurface          *window,
 }

 static void
-snap_up (GdkSurface *window)
+snap_up (GdkSurface *surface)
 {
  SHORT maxysize;
  int x, y;
  int width, height;
  GdkWin32Surface *impl;

-  impl = GDK_WIN32_SURFACE (window);
+  impl = GDK_WIN32_SURFACE (surface);

  impl->snap_state = GDK_WIN32_AEROSNAP_STATE_FULLUP;

-  stash_window (window, impl);
+  stash_window (surface, impl);

  maxysize = GetSystemMetrics (SM_CYVIRTUALSCREEN) / impl->surface_scale;
  x = y = 0;
-  width = gdk_surface_get_width (window);
+  width = gdk_surface_get_width (surface);

  y = 0;
  height = maxysize;

-  x = x - impl->shadow.left;
-  y = y - impl->shadow.top;
+  x = surface->x - impl->shadow.left / impl->surface_scale;
+  y = y - impl->shadow.top / impl->surface_scale;
  width += impl->shadow_x;
  height += impl->shadow_y;

-  /* XXX: FIXME, AeroSnap snap_up() not really working well,
-   *
-   *    * The snap_up() puts the window at the top left corner.
-   *    * Without the following call, the height maximizes but we see a spew of
-   *      "GdkToplevelSize: geometry size (x,y) exceeds bounds" warnings
-   */
-  compute_toplevel_size (window, TRUE, &width, &height);
-
-  gdk_win32_surface_move_resize (window, x, y, width, height);
+  gdk_win32_surface_move_resize (surface, x, y, width, height);
 }

 static void
-snap_left (GdkSurface  *window,
+snap_left (GdkSurface *surface,
           GdkMonitor *monitor,
           GdkMonitor *snap_monitor)
 {
  GdkRectangle rect;
  GdkWin32Surface *impl;

-  impl = GDK_WIN32_SURFACE (window);
+  impl = GDK_WIN32_SURFACE (surface);

  impl->snap_state = GDK_WIN32_AEROSNAP_STATE_HALFLEFT;

  gdk_win32_monitor_get_workarea (snap_monitor, &rect);

-  stash_window (window, impl);
+  stash_window (surface, impl);

  rect.width = rect.width / 2;

-  rect.x = rect.x - impl->shadow.left;
-  rect.y = rect.y - impl->shadow.top;
+  rect.x = rect.x - impl->shadow.left / impl->surface_scale;
+  rect.y = rect.y - impl->shadow.top / impl->surface_scale;
  rect.width = rect.width + impl->shadow_x;
  rect.height = rect.height + impl->shadow_y;

-  gdk_win32_surface_move_resize (window,
+  gdk_win32_surface_move_resize (surface,
                                 rect.x, rect.y,
                                 rect.width, rect.height);
 }

 static void
-snap_right (GdkSurface  *window,
+snap_right (GdkSurface *surface,
            GdkMonitor *monitor,
            GdkMonitor *snap_monitor)
 {
  GdkRectangle rect;
  GdkWin32Surface *impl;

-  impl = GDK_WIN32_SURFACE (window);
+  impl = GDK_WIN32_SURFACE (surface);

  impl->snap_state = GDK_WIN32_AEROSNAP_STATE_HALFRIGHT;

  gdk_win32_monitor_get_workarea (snap_monitor, &rect);

-  stash_window (window, impl);
+  stash_window (surface, impl);

  rect.width = rect.width / 2;
  rect.x += rect.width;

-  rect.x = rect.x - impl->shadow.left;
-  rect.y = rect.y - impl->shadow.top;
+  rect.x = rect.x - impl->shadow.left / impl->surface_scale;
+  rect.y = rect.y - impl->shadow.top / impl->surface_scale;
  rect.width = rect.width + impl->shadow_x;
  rect.height = rect.height + impl->shadow_y;

-  gdk_win32_surface_move_resize (window,
+  gdk_win32_surface_move_resize (surface,
                                 rect.x, rect.y,
                                 rect.width, rect.height);
 }
@@ -3010,6 +2988,7 @@ update_fullup_indicator (GdkSurface                   *window,
  to.height = gdk_surface_get_height (window);

  to.y = 0;
+  to.x = window->x;
  to.height = maxysize;
  from = context->indicator_target;

@@ -3162,6 +3141,7 @@ start_indicator (GdkSurface                   *window,
      end_size.height = workarea.height;
      break;
    case GDK_WIN32_AEROSNAP_STATE_FULLUP:
+      start_size.x = end_size.x = window->x;
      end_size.y = 0;
      end_size.height = maxysize;
      break;
@@ -5032,39 +5012,6 @@ gdk_win32_drag_surface_iface_init (GdkDragSurfaceInterface *iface)
  iface->present = gdk_win32_drag_surface_present;
 }

-#ifdef GDK_WIN32_ENABLE_EGL
-EGLSurface
-gdk_win32_surface_get_egl_surface (GdkSurface *surface,
-                                   EGLConfig   config,
-                                   gboolean    is_dummy)
-{
-  GdkWin32Display *display = GDK_WIN32_DISPLAY (gdk_surface_get_display (surface));
-  GdkWin32Surface *impl = GDK_WIN32_SURFACE (surface);
-
-  if (is_dummy)
-    {
-      if (impl->egl_dummy_surface == EGL_NO_SURFACE)
-        {
-          EGLint attribs[] = {EGL_WIDTH, 1, EGL_WIDTH, 1, EGL_NONE};
-          impl->egl_dummy_surface = eglCreatePbufferSurface (display->egl_disp,
-                                                             config,
-                                                             attribs);
-        }
-      return impl->egl_dummy_surface;
-    }
-  else
-    {
-      if (impl->egl_surface == EGL_NO_SURFACE)
-        impl->egl_surface = eglCreateWindowSurface (display->egl_disp,
-                                                    config,
-                                                    GDK_SURFACE_HWND (surface),
-                                                    NULL);
-
-      return impl->egl_surface;
-    }
-
-}
-#endif

 static void
 gdk_win32_surface_get_queued_window_rect (GdkSurface *surface,
@@ -5143,7 +5090,7 @@ _gdk_win32_surface_invalidate_egl_framebuffer (GdkSurface *surface)
 *  as we need to re-acquire the EGL surfaces that we rendered to upload to Cairo explicitly,
 *  using gdk_window_invalidate_rect (), when we maximize or restore or use aerosnap
 */
-#ifdef GDK_WIN32_ENABLE_EGL
+#ifdef HAVE_EGL
  if (surface->gl_paint_context != NULL && gdk_gl_context_get_use_es (surface->gl_paint_context))
    {
      GdkWin32Surface *impl = GDK_WIN32_SURFACE (surface);
@@ -33,7 +33,7 @@

 #include <windows.h>

-#ifdef GDK_WIN32_ENABLE_EGL
+#ifdef HAVE_EGL
 # include <epoxy/egl.h>
 #endif

@@ -338,9 +338,7 @@ struct _GdkWin32Surface
    RECT configured_rect;
  } next_layout;

-#ifdef GDK_WIN32_ENABLE_EGL
-  EGLSurface egl_surface;
-  EGLSurface egl_dummy_surface;
+#ifdef HAVE_EGL
  guint egl_force_redraw_all : 1;
 #endif
 };
@@ -373,7 +371,7 @@ void gdk_win32_surface_move_resize (GdkSurface *window,
 RECT
 gdk_win32_surface_handle_queued_move_resize (GdkDrawContext *draw_context);

-#ifdef GDK_WIN32_ENABLE_EGL
+#ifdef HAVE_EGL
 EGLSurface gdk_win32_surface_get_egl_surface (GdkSurface *surface,
                                              EGLConfig   config,
                                              gboolean    is_dummy);
@@ -46,10 +46,7 @@ gdk_win32_public_headers = files([

 install_headers(gdk_win32_public_headers, 'gdkwin32.h', subdir: 'gtk-4.0/gdk/win32/')

-GDK_WIN32_EGL_CFLAGS = []
-
 if have_egl
-  GDK_WIN32_EGL_CFLAGS = ['-DGDK_WIN32_ENABLE_EGL']
  gdk_win32_sources += ['gdkglcontext-win32-egl.c']
 endif

@@ -67,6 +64,6 @@ libgdk_win32 = static_library('gdk-win32',
    '-DINSIDE_GDK_WIN32',
    '-D_WIN32_WINNT=0x0601',
    '-DWINVER=0x0601',
-  ] + GDK_WIN32_EGL_CFLAGS,
+  ],
  dependencies: [ gdk_deps, gdk_win32_deps ],
 )
@@ -492,9 +492,18 @@ init_randr15 (GdkX11Screen *x11_screen)

      if (output_info->crtc)
        {
-          XRRCrtcInfo *crtc = XRRGetCrtcInfo (x11_screen->xdisplay, resources, output_info->crtc);
+          XRRCrtcInfo *crtc;
          int j;

+          gdk_x11_display_error_trap_push (display);
+          crtc = XRRGetCrtcInfo (x11_screen->xdisplay, resources,
+                                 output_info->crtc);
+          if (gdk_x11_display_error_trap_pop (display))
+            {
+              XRRFreeOutputInfo (output_info);
+              continue;
+            }
+
          for (j = 0; j < resources->nmode; j++)
            {
              XRRModeInfo *xmode = &resources->modes[j];
@@ -269,6 +269,8 @@ collect_reused_child_nodes (GskRenderer *renderer,
    case GSK_BLEND_NODE:
    case GSK_CROSS_FADE_NODE:
    case GSK_BLUR_NODE:
+    case GSK_FILL_NODE:
+    case GSK_STROKE_NODE:

    default:

@@ -855,6 +857,8 @@ gsk_broadway_renderer_add_node (GskRenderer *renderer,
    case GSK_CROSS_FADE_NODE:
    case GSK_BLUR_NODE:
    case GSK_GL_SHADER_NODE:
+    case GSK_FILL_NODE:
+    case GSK_STROKE_NODE:
    default:
      break; /* Fallback */
    }
@@ -282,7 +282,7 @@ snapshot_uniforms (GskGLUniformState    *state,
    {
      const GskGLUniformMapping *mapping = &program->mappings[i];

-      if (!mapping->info.initial && mapping->location > -1)
+      if (!mapping->info.initial && mapping->info.format && mapping->location > -1)
        {
          uniform[count].location = mapping->location;
          uniform[count].info = mapping->info;
@@ -28,10 +28,11 @@
 #include "gskglcompilerprivate.h"
 #include "gskglprogramprivate.h"

-#define SHADER_VERSION_GLES       100
-#define SHADER_VERSION_GL2_LEGACY 110
-#define SHADER_VERSION_GL3_LEGACY 130
-#define SHADER_VERSION_GL3        150
+#define SHADER_VERSION_GLES       "100"
+#define SHADER_VERSION_GLES3      "300 es"
+#define SHADER_VERSION_GL2_LEGACY "110"
+#define SHADER_VERSION_GL3_LEGACY "130"
+#define SHADER_VERSION_GL3        "150"

 struct _GskGLCompiler
 {
@@ -49,7 +50,7 @@ struct _GskGLCompiler

  GArray *attrib_locations;

-  int glsl_version;
+  const char *glsl_version;

  guint gl3 : 1;
  guint gles : 1;
@@ -98,7 +99,7 @@ gsk_gl_compiler_class_init (GskGLCompilerClass *klass)
 static void
 gsk_gl_compiler_init (GskGLCompiler *self)
 {
-  self->glsl_version = 150;
+  self->glsl_version = "150";
  self->attrib_locations = g_array_new (FALSE, FALSE, sizeof (GskGLProgramAttrib));
  self->all_preamble = g_bytes_ref (empty_bytes);
  self->vertex_preamble = g_bytes_ref (empty_bytes);
@@ -127,8 +128,18 @@ gsk_gl_compiler_new (GskGLDriver *driver,

  if (gdk_gl_context_get_use_es (context))
    {
-      self->glsl_version = SHADER_VERSION_GLES;
-      self->gles = TRUE;
+      int maj, min;
+
+      /* for OpenGL/ES 3.0+, use "300 es" as our shader version */
+      gdk_gl_context_get_version (context, &maj, &min);
+
+      if (maj >= 3)
+        self->glsl_version = SHADER_VERSION_GLES3;
+      else
+        {
+          self->glsl_version = SHADER_VERSION_GLES;
+          self->gles = TRUE;
+        }
    }
  else if (gdk_gl_context_is_legacy (context))
    {
@@ -546,7 +557,7 @@ gsk_gl_compiler_compile (GskGLCompiler  *self,

  gsk_gl_command_queue_make_current (self->driver->command_queue);

-  g_snprintf (version, sizeof version, "#version %d\n", self->glsl_version);
+  g_snprintf (version, sizeof version, "#version %s\n", self->glsl_version);

  if (self->debug_shaders)
    debug = "#define GSK_DEBUG 1\n";
@@ -32,6 +32,7 @@
 #include "gskglcommandqueueprivate.h"
 #include "gskglcompilerprivate.h"
 #include "gskglglyphlibraryprivate.h"
+#include "gskglglyphylibraryprivate.h"
 #include "gskgliconlibraryprivate.h"
 #include "gskglprogramprivate.h"
 #include "gskglshadowlibraryprivate.h"
@@ -44,9 +45,6 @@
 #include <gdk/gdkprofilerprivate.h>
 #include <gdk/gdktextureprivate.h>

-#define ATLAS_SIZE 512
-#define MAX_OLD_RATIO 0.5
-
 G_DEFINE_TYPE (GskGLDriver, gsk_gl_driver, G_TYPE_OBJECT)

 static guint
@@ -156,50 +154,6 @@ gsk_gl_driver_collect_unused_textures (GskGLDriver *self,
  return collected;
 }

-static void
-gsk_gl_texture_atlas_free (GskGLTextureAtlas *atlas)
-{
-  if (atlas->texture_id != 0)
-    {
-      glDeleteTextures (1, &atlas->texture_id);
-      atlas->texture_id = 0;
-    }
-
-  g_clear_pointer (&atlas->nodes, g_free);
-  g_slice_free (GskGLTextureAtlas, atlas);
-}
-
-GskGLTextureAtlas *
-gsk_gl_driver_create_atlas (GskGLDriver *self)
-{
-  GskGLTextureAtlas *atlas;
-
-  g_return_val_if_fail (GSK_IS_GL_DRIVER (self), NULL);
-
-  atlas = g_slice_new0 (GskGLTextureAtlas);
-  atlas->width = ATLAS_SIZE;
-  atlas->height = ATLAS_SIZE;
-  /* TODO: We might want to change the strategy about the amount of
-   *       nodes here? stb_rect_pack.h says width is optimal. */
-  atlas->nodes = g_malloc0_n (atlas->width, sizeof (struct stbrp_node));
-  stbrp_init_target (&atlas->context, atlas->width, atlas->height, atlas->nodes, atlas->width);
-  atlas->texture_id = gsk_gl_command_queue_create_texture (self->command_queue,
-                                                           atlas->width,
-                                                           atlas->height,
-                                                           GL_RGBA8,
-                                                           GL_LINEAR,
-                                                           GL_LINEAR);
-
-  gdk_gl_context_label_object_printf (gdk_gl_context_get_current (),
-                                      GL_TEXTURE, atlas->texture_id,
-                                      "Texture atlas %d",
-                                      atlas->texture_id);
-
-  g_ptr_array_add (self->atlases, atlas);
-
-  return atlas;
-}
-
 static void
 remove_program (gpointer data)
 {
@@ -226,6 +180,29 @@ gsk_gl_driver_shader_weak_cb (gpointer  data,
    g_hash_table_remove (self->shader_cache, where_object_was);
 }

+G_GNUC_NULL_TERMINATED static inline GBytes *
+join_sources (GBytes *first_bytes,
+              ...)
+{
+  GByteArray *byte_array = g_byte_array_new ();
+  GBytes *bytes = first_bytes;
+  va_list args;
+
+  va_start (args, first_bytes);
+  while (bytes != NULL)
+    {
+      gsize len;
+      const guint8 *data = g_bytes_get_data (bytes, &len);
+      if (len > 0)
+        g_byte_array_append (byte_array, data, len);
+      g_bytes_unref (bytes);
+      bytes = va_arg (args, GBytes *);
+    }
+  va_end (args);
+
+  return g_byte_array_free_to_bytes (byte_array);
+}
+
 static void
 gsk_gl_driver_dispose (GObject *object)
 {
@@ -235,6 +212,10 @@ gsk_gl_driver_dispose (GObject *object)
  g_assert (self->in_frame == FALSE);

 #define GSK_GL_NO_UNIFORMS
+#define GSK_GL_SHADER_RESOURCE(name)
+#define GSK_GL_SHADER_STRING(str)
+#define GSK_GL_SHADER_SINGLE(name)
+#define GSK_GL_SHADER_JOINED(kind, ...)
 #define GSK_GL_ADD_UNIFORM(pos, KEY, name)
 #define GSK_GL_DEFINE_PROGRAM(name, resource, uniforms) \
  GSK_GL_DELETE_PROGRAM(name);                          \
@@ -248,6 +229,10 @@ gsk_gl_driver_dispose (GObject *object)
  } G_STMT_END;
 # include "gskglprograms.defs"
 #undef GSK_GL_NO_UNIFORMS
+#undef GSK_GL_SHADER_RESOURCE
+#undef GSK_GL_SHADER_STRING
+#undef GSK_GL_SHADER_SINGLE
+#undef GSK_GL_SHADER_JOINED
 #undef GSK_GL_ADD_UNIFORM
 #undef GSK_GL_DEFINE_PROGRAM

@@ -289,11 +274,11 @@ gsk_gl_driver_dispose (GObject *object)
  g_assert (!self->texture_id_to_key || g_hash_table_size (self->texture_id_to_key) == 0);
  g_assert (!self->key_to_texture_id|| g_hash_table_size (self->key_to_texture_id) == 0);

-  g_clear_object (&self->glyphs);
-  g_clear_object (&self->icons);
-  g_clear_object (&self->shadows);
+  g_clear_object (&self->glyphs_library);
+  g_clear_object (&self->glyphy_library);
+  g_clear_object (&self->icons_library);
+  g_clear_object (&self->shadows_library);

-  g_clear_pointer (&self->atlases, g_ptr_array_unref);
  g_clear_pointer (&self->autorelease_framebuffers, g_array_unref);
  g_clear_pointer (&self->key_to_texture_id, g_hash_table_unref);
  g_clear_pointer (&self->textures, g_hash_table_unref);
@@ -330,7 +315,6 @@ gsk_gl_driver_init (GskGLDriver *self)
  self->shader_cache = g_hash_table_new_full (NULL, NULL, NULL, remove_program);
  self->texture_pool = g_array_new (FALSE, FALSE, sizeof (guint));
  self->render_targets = g_ptr_array_new ();
-  self->atlases = g_ptr_array_new_with_free_func ((GDestroyNotify)gsk_gl_texture_atlas_free);
 }

 static gboolean
@@ -348,14 +332,14 @@ gsk_gl_driver_load_programs (GskGLDriver  *self,

  /* Setup preambles that are shared by all shaders */
  gsk_gl_compiler_set_preamble_from_resource (compiler,
-                                               GSK_GL_COMPILER_ALL,
-                                               "/org/gtk/libgsk/gl/preamble.glsl");
+                                              GSK_GL_COMPILER_ALL,
+                                              "/org/gtk/libgsk/gl/preamble.glsl");
  gsk_gl_compiler_set_preamble_from_resource (compiler,
-                                               GSK_GL_COMPILER_VERTEX,
-                                               "/org/gtk/libgsk/gl/preamble.vs.glsl");
+                                              GSK_GL_COMPILER_VERTEX,
+                                              "/org/gtk/libgsk/gl/preamble.vs.glsl");
  gsk_gl_compiler_set_preamble_from_resource (compiler,
-                                               GSK_GL_COMPILER_FRAGMENT,
-                                               "/org/gtk/libgsk/gl/preamble.fs.glsl");
+                                              GSK_GL_COMPILER_FRAGMENT,
+                                              "/org/gtk/libgsk/gl/preamble.fs.glsl");

  /* Setup attributes that are provided via VBO */
  gsk_gl_compiler_bind_attribute (compiler, "aPosition", 0);
@@ -365,10 +349,28 @@ gsk_gl_driver_load_programs (GskGLDriver  *self,

  /* Use XMacros to register all of our programs and their uniforms */
 #define GSK_GL_NO_UNIFORMS
+#define GSK_GL_SHADER_RESOURCE(name)                                                            \
+  g_bytes_ref(g_resources_lookup_data("/org/gtk/libgsk/gl/" name, 0, NULL))
+#define GSK_GL_SHADER_STRING(str)                                                               \
+  g_bytes_new_static(str, strlen(str))
+#define GSK_GL_SHADER_SINGLE(bytes)                                                             \
+  G_STMT_START {                                                                                \
+    GBytes *b = bytes;                                                                          \
+    gsk_gl_compiler_set_source (compiler, GSK_GL_COMPILER_ALL, b);                              \
+    g_bytes_unref (b);                                                                          \
+  } G_STMT_END;
+#define GSK_GL_SHADER_JOINED(kind, ...)                                                         \
+  G_STMT_START {                                                                                \
+    GBytes *bytes = join_sources(__VA_ARGS__);                                                  \
+    gsk_gl_compiler_set_source (compiler, GSK_GL_COMPILER_##kind, bytes);                       \
+    g_bytes_unref (bytes);                                                                      \
+  } G_STMT_END;
 #define GSK_GL_ADD_UNIFORM(pos, KEY, name)                                                      \
  gsk_gl_program_add_uniform (program, #name, UNIFORM_##KEY);
-#define GSK_GL_DEFINE_PROGRAM(name, resource, uniforms)                                         \
-  gsk_gl_compiler_set_source_from_resource (compiler, GSK_GL_COMPILER_ALL, resource);           \
+#define GSK_GL_DEFINE_PROGRAM(name, sources, uniforms)                                          \
+  gsk_gl_compiler_set_source (compiler, GSK_GL_COMPILER_VERTEX, NULL);                          \
+  gsk_gl_compiler_set_source (compiler, GSK_GL_COMPILER_FRAGMENT, NULL);                        \
+  sources                                                                                       \
  GSK_GL_COMPILE_PROGRAM(name ## _no_clip, uniforms, "#define NO_CLIP 1\n");                    \
  GSK_GL_COMPILE_PROGRAM(name ## _rect_clip, uniforms, "#define RECT_CLIP 1\n");                \
  GSK_GL_COMPILE_PROGRAM(name, uniforms, "");
@@ -401,6 +403,11 @@ gsk_gl_driver_load_programs (GskGLDriver  *self,
 #undef GSK_GL_DEFINE_PROGRAM_CLIP
 #undef GSK_GL_DEFINE_PROGRAM
 #undef GSK_GL_ADD_UNIFORM
+#undef GSK_GL_SHADER_SINGLE
+#undef GSK_GL_SHADER_JOINED
+#undef GSK_GL_SHADER_RESOURCE
+#undef GSK_GL_SHADER_STRING
+#undef GSK_GL_NO_UNIFORMS

  ret = TRUE;

@@ -456,9 +463,10 @@ gsk_gl_driver_new (GskGLCommandQueue  *command_queue,
      return NULL;
    }

-  self->glyphs = gsk_gl_glyph_library_new (self);
-  self->icons = gsk_gl_icon_library_new (self);
-  self->shadows = gsk_gl_shadow_library_new (self);
+  self->glyphs_library = gsk_gl_glyph_library_new (self);
+  self->glyphy_library = gsk_gl_glyphy_library_new (self);
+  self->icons_library = gsk_gl_icon_library_new (self);
+  self->shadows_library = gsk_gl_shadow_library_new (self);

  gdk_profiler_end_mark (before, "create GskGLDriver", NULL);

@@ -518,37 +526,6 @@ failure:
  return g_steal_pointer (&driver);
 }

-static GPtrArray *
-gsk_gl_driver_compact_atlases (GskGLDriver *self)
-{
-  GPtrArray *removed = NULL;
-
-  g_assert (GSK_IS_GL_DRIVER (self));
-
-  for (guint i = self->atlases->len; i > 0; i--)
-    {
-      GskGLTextureAtlas *atlas = g_ptr_array_index (self->atlases, i - 1);
-
-      if (gsk_gl_texture_atlas_get_unused_ratio (atlas) > MAX_OLD_RATIO)
-        {
-          GSK_NOTE (GLYPH_CACHE,
-                    g_message ("Dropping atlas %d (%g.2%% old)", i,
-                               100.0 * gsk_gl_texture_atlas_get_unused_ratio (atlas)));
-          if (removed == NULL)
-            removed = g_ptr_array_new_with_free_func ((GDestroyNotify)gsk_gl_texture_atlas_free);
-          g_ptr_array_add (removed, g_ptr_array_steal_index (self->atlases, i - 1));
-        }
-    }
-
-  GSK_NOTE (GLYPH_CACHE, {
-    static guint timestamp;
-    if (timestamp++ % 60 == 0)
-      g_message ("%d atlases", self->atlases->len);
-  });
-
-  return removed;
-}
-
 /**
 * gsk_gl_driver_begin_frame:
 * @self: a `GskGLDriver`
@@ -565,7 +542,6 @@ gsk_gl_driver_begin_frame (GskGLDriver       *self,
                           GskGLCommandQueue *command_queue)
 {
  gint64 last_frame_id;
-  GPtrArray *removed;

  g_return_if_fail (GSK_IS_GL_DRIVER (self));
  g_return_if_fail (GSK_IS_GL_COMMAND_QUEUE (command_queue));
@@ -580,19 +556,16 @@ gsk_gl_driver_begin_frame (GskGLDriver       *self,

  gsk_gl_command_queue_begin_frame (self->command_queue);

-  /* Compact atlases with too many freed pixels */
-  removed = gsk_gl_driver_compact_atlases (self);
-
  /* Mark unused pixel regions of the atlases */
-  gsk_gl_texture_library_begin_frame (GSK_GL_TEXTURE_LIBRARY (self->icons),
-                                       self->current_frame_id,
-                                       removed);
-  gsk_gl_texture_library_begin_frame (GSK_GL_TEXTURE_LIBRARY (self->glyphs),
-                                       self->current_frame_id,
-                                       removed);
+  gsk_gl_texture_library_begin_frame (GSK_GL_TEXTURE_LIBRARY (self->icons_library),
+                                      self->current_frame_id);
+  gsk_gl_texture_library_begin_frame (GSK_GL_TEXTURE_LIBRARY (self->glyphs_library),
+                                      self->current_frame_id);
+  gsk_gl_texture_library_begin_frame (GSK_GL_TEXTURE_LIBRARY (self->glyphy_library),
+                                      self->current_frame_id);

  /* Cleanup old shadows */
-  gsk_gl_shadow_library_begin_frame (self->shadows);
+  gsk_gl_shadow_library_begin_frame (self->shadows_library);

  /* Remove all textures that are from a previous frame or are no
   * longer used by linked GdkTexture. We do this at the beginning
@@ -600,9 +573,6 @@ gsk_gl_driver_begin_frame (GskGLDriver       *self,
   * we block on any resources while delivering our frames.
   */
  gsk_gl_driver_collect_unused_textures (self, last_frame_id - 1);
-
-  /* Now free atlas textures */
-  g_clear_pointer (&removed, g_ptr_array_unref);
 }

 /**
@@ -1182,14 +1152,23 @@ void
 gsk_gl_driver_save_atlases_to_png (GskGLDriver *self,
                                   const char  *directory)
 {
+  GPtrArray *atlases;
+
  g_return_if_fail (GSK_IS_GL_DRIVER (self));

  if (directory == NULL)
    directory = ".";

-  for (guint i = 0; i < self->atlases->len; i++)
+#define copy_atlases(dst, library) \
+  g_ptr_array_extend(dst, GSK_GL_TEXTURE_LIBRARY(library)->atlases, NULL, NULL)
+  atlases = g_ptr_array_new ();
+  copy_atlases (atlases, self->glyphs_library);
+  copy_atlases (atlases, self->icons_library);
+#undef copy_atlases
+
+  for (guint i = 0; i < atlases->len; i++)
    {
-      GskGLTextureAtlas *atlas = g_ptr_array_index (self->atlases, i);
+      GskGLTextureAtlas *atlas = g_ptr_array_index (atlases, i);
      char *filename = g_strdup_printf ("%s%sframe-%d-atlas-%d.png",
                                        directory,
                                        G_DIR_SEPARATOR_S,
@@ -1198,6 +1177,8 @@ gsk_gl_driver_save_atlases_to_png (GskGLDriver *self,
      write_atlas_to_png (self, atlas, filename);
      g_free (filename);
    }
+
+  g_ptr_array_unref (atlases);
 }
 #endif

@@ -100,17 +100,16 @@ struct _GskGLDriver
  GskGLCommandQueue *shared_command_queue;
  GskGLCommandQueue *command_queue;

-  GskGLGlyphLibrary *glyphs;
-  GskGLIconLibrary *icons;
-  GskGLShadowLibrary *shadows;
+  GskGLGlyphLibrary *glyphs_library;
+  GskGLGlyphyLibrary *glyphy_library;
+  GskGLIconLibrary *icons_library;
+  GskGLShadowLibrary *shadows_library;

  GArray *texture_pool;
  GHashTable *textures;
  GHashTable *key_to_texture_id;
  GHashTable *texture_id_to_key;

-  GPtrArray *atlases;
-
  GHashTable *shader_cache;

  GArray *autorelease_framebuffers;
@@ -184,7 +183,6 @@ void                gsk_gl_driver_add_texture_slices     (GskGLDriver         *s
 GskGLProgram      * gsk_gl_driver_lookup_shader          (GskGLDriver         *self,
                                                          GskGLShader         *shader,
                                                          GError             **error);
-GskGLTextureAtlas * gsk_gl_driver_create_atlas           (GskGLDriver         *self);

 #ifdef G_ENABLE_DEBUG
 void                gsk_gl_driver_save_atlases_to_png    (GskGLDriver         *self,
@@ -84,15 +84,64 @@ gsk_gl_glyph_value_free (gpointer data)
 }

 static void
-gsk_gl_glyph_library_begin_frame (GskGLTextureLibrary *library,
-                                  gint64               frame_id,
-                                  GPtrArray           *removed_atlases)
+gsk_gl_glyph_library_clear_cache (GskGLTextureLibrary *library)
 {
  GskGLGlyphLibrary *self = (GskGLGlyphLibrary *)library;

+  g_assert (GSK_IS_GL_GLYPH_LIBRARY (self));
+
  memset (self->front, 0, sizeof self->front);
 }

+static void
+gsk_gl_glyph_library_init_atlas (GskGLTextureLibrary *self,
+                                 GskGLTextureAtlas   *atlas)
+{
+  gboolean packed G_GNUC_UNUSED;
+  int x, y;
+  guint gl_format;
+  guint gl_type;
+  guint8 pixel_data[4 * 3 * 3];
+
+  g_assert (GSK_IS_GL_GLYPH_LIBRARY (self));
+  g_assert (atlas != NULL);
+
+  /* Insert a single pixel at 0,0 for use in coloring */
+
+  gdk_gl_context_push_debug_group_printf (gdk_gl_context_get_current (),
+                                          "Initializing Atlas");
+
+  packed = gsk_gl_texture_library_allocate (self, atlas, 3, 3, &x, &y);
+  g_assert (packed);
+  g_assert (x == 0 && y == 0);
+
+  memset (pixel_data, 255, sizeof pixel_data);
+
+  if (gdk_gl_context_get_use_es (gdk_gl_context_get_current ()))
+    {
+      gl_format = GL_RGBA;
+      gl_type = GL_UNSIGNED_BYTE;
+    }
+  else
+    {
+      gl_format = GL_BGRA;
+      gl_type = GL_UNSIGNED_INT_8_8_8_8_REV;
+    }
+
+  glBindTexture (GL_TEXTURE_2D, atlas->texture_id);
+
+  glTexSubImage2D (GL_TEXTURE_2D, 0,
+                   0, 0,
+                   3, 3,
+                   gl_format, gl_type,
+                   pixel_data);
+
+  gdk_gl_context_pop_debug_group (gdk_gl_context_get_current ());
+
+  self->driver->command_queue->n_uploads++;
+}
+
+
 static void
 gsk_gl_glyph_library_finalize (GObject *object)
 {
@@ -111,7 +160,8 @@ gsk_gl_glyph_library_class_init (GskGLGlyphLibraryClass *klass)

  object_class->finalize = gsk_gl_glyph_library_finalize;

-  library_class->begin_frame = gsk_gl_glyph_library_begin_frame;
+  library_class->clear_cache = gsk_gl_glyph_library_clear_cache;
+  library_class->init_atlas = gsk_gl_glyph_library_init_atlas;
 }

 static void
@@ -161,25 +211,27 @@ gsk_gl_glyph_library_create_surface (GskGLGlyphLibrary *self,

 static void
 render_glyph (cairo_surface_t           *surface,
-              const cairo_scaled_font_t *scaled_font,
              const GskGLGlyphKey       *key,
              const GskGLGlyphValue     *value)
 {
  cairo_t *cr;
-  cairo_glyph_t glyph;
+  PangoGlyphString glyph_string;
+  PangoGlyphInfo glyph_info;

  g_assert (surface != NULL);
-  g_assert (scaled_font != NULL);

  cr = cairo_create (surface);
-  cairo_set_scaled_font (cr, scaled_font);
  cairo_set_source_rgba (cr, 1, 1, 1, 1);

-  glyph.index = key->glyph;
-  glyph.x = 0.25 * key->xshift - value->ink_rect.x;
-  glyph.y = 0.25 * key->yshift - value->ink_rect.y;
+  glyph_info.glyph = key->glyph;
+  glyph_info.geometry.width = value->ink_rect.width * 1024;
+  glyph_info.geometry.x_offset = 0.25 * key->xshift - value->ink_rect.x * 1024;
+  glyph_info.geometry.y_offset = 0.25 * key->yshift - value->ink_rect.y * 1024;

-  cairo_show_glyphs (cr, &glyph, 1);
+  glyph_string.num_glyphs = 1;
+  glyph_string.glyphs = &glyph_info;
+
+  pango_cairo_show_glyph_string (cr, key->font, &glyph_string);
  cairo_destroy (cr);

  cairo_surface_flush (surface);
@@ -198,7 +250,6 @@ gsk_gl_glyph_library_upload_glyph (GskGLGlyphLibrary     *self,
 {
  GskGLTextureLibrary *tl = (GskGLTextureLibrary *)self;
  G_GNUC_UNUSED gint64 start_time = GDK_PROFILER_CURRENT_TIME;
-  cairo_scaled_font_t *scaled_font;
  cairo_surface_t *surface;
  guchar *pixel_data;
  guchar *free_data = NULL;
@@ -211,11 +262,6 @@ gsk_gl_glyph_library_upload_glyph (GskGLGlyphLibrary     *self,
  g_assert (key != NULL);
  g_assert (value != NULL);

-  scaled_font = pango_cairo_font_get_scaled_font ((PangoCairoFont *)key->font);
-  if G_UNLIKELY (scaled_font == NULL ||
-                 cairo_scaled_font_status (scaled_font) != CAIRO_STATUS_SUCCESS)
-    return;
-
  stride = cairo_format_stride_for_width (CAIRO_FORMAT_ARGB32, width);

  gdk_gl_context_push_debug_group_printf (gdk_gl_context_get_current (),
@@ -223,7 +269,7 @@ gsk_gl_glyph_library_upload_glyph (GskGLGlyphLibrary     *self,
                                          key->glyph);

  surface = gsk_gl_glyph_library_create_surface (self, stride, width, height, uwidth, uheight);
-  render_glyph (surface, scaled_font, key, value);
+  render_glyph (surface, key, value);

  texture_id = GSK_GL_TEXTURE_ATLAS_ENTRY_TEXTURE (value);

@@ -0,0 +1,523 @@
+/* gskglglyphylibrary.c
+ *
+ * Copyright 2020 Christian Hergert <chergert@redhat.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ */
+
+/* Some of the glyphy cache is based upon the original glyphy code.
+ * It's license is provided below.
+ */
+/*
+ * Copyright 2012 Google, Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * Google Author(s): Behdad Esfahbod
+ */
+
+#include "config.h"
+
+#include <gdk/gdkglcontextprivate.h>
+#include <gdk/gdkmemoryformatprivate.h>
+#include <gdk/gdkprofilerprivate.h>
+
+#include "gskglcommandqueueprivate.h"
+#include "gskgldriverprivate.h"
+#include "gskglglyphylibraryprivate.h"
+
+#include "gskpath.h"
+
+#include <glyphy.h>
+
+#define TOLERANCE (1/2048.)
+#define MIN_FONT_SIZE 14
+#define GRID_SIZE 20 /* Per EM */
+#define ENLIGHTEN_MAX .01 /* Per EM */
+#define EMBOLDEN_MAX .024 /* Per EM */
+#define ITEM_W 64
+#define ITEM_H_QUANTUM 8
+
+G_DEFINE_TYPE (GskGLGlyphyLibrary, gsk_gl_glyphy_library, GSK_TYPE_GL_TEXTURE_LIBRARY)
+
+GskGLGlyphyLibrary *
+gsk_gl_glyphy_library_new (GskGLDriver *driver)
+{
+  g_return_val_if_fail (GSK_IS_GL_DRIVER (driver), NULL);
+
+  return g_object_new (GSK_TYPE_GL_GLYPHY_LIBRARY,
+                       "driver", driver,
+                       NULL);
+}
+
+static guint
+gsk_gl_glyphy_key_hash (gconstpointer data)
+{
+  const GskGLGlyphyKey *key = data;
+
+  /* malloc()'d pointers already guarantee 3 bits from the LSB on 64-bit and
+   * 2 bits from the LSB on 32-bit. Shift by enough to give us 256 entries
+   * in our front cache for the glyph since languages will naturally cluster
+   * for us.
+   */
+
+  return (key->font << 8) ^ key->glyph;
+}
+
+static gboolean
+gsk_gl_glyphy_key_equal (gconstpointer v1,
+                         gconstpointer v2)
+{
+  return memcmp (v1, v2, sizeof (GskGLGlyphyKey)) == 0;
+}
+
+static void
+gsk_gl_glyphy_key_free (gpointer data)
+{
+  GskGLGlyphyKey *key = data;
+
+  g_slice_free (GskGLGlyphyKey, key);
+}
+
+static void
+gsk_gl_glyphy_value_free (gpointer data)
+{
+  g_slice_free (GskGLGlyphyValue, data);
+}
+
+static void
+gsk_gl_glyphy_library_clear_cache (GskGLTextureLibrary *library)
+{
+  GskGLGlyphyLibrary *self = (GskGLGlyphyLibrary *)library;
+
+  g_assert (GSK_IS_GL_GLYPHY_LIBRARY (self));
+
+  memset (self->front, 0, sizeof self->front);
+}
+
+static void
+gsk_gl_glyphy_library_init_atlas (GskGLTextureLibrary *library,
+                                  GskGLTextureAtlas   *atlas)
+{
+  g_assert (GSK_IS_GL_GLYPHY_LIBRARY (library));
+  g_assert (atlas != NULL);
+
+  atlas->cursor_x = 0;
+  atlas->cursor_y = 0;
+}
+
+static gboolean
+gsk_gl_glyphy_library_allocate (GskGLTextureLibrary *library,
+                                GskGLTextureAtlas   *atlas,
+                                int                  width,
+                                int                  height,
+                                int                 *out_x,
+                                int                 *out_y)
+{
+  GskGLGlyphyLibrary *self = (GskGLGlyphyLibrary *)library;
+  int cursor_save_x;
+  int cursor_save_y;
+
+  g_assert (GSK_IS_GL_GLYPHY_LIBRARY (self));
+  g_assert (atlas != NULL);
+
+  cursor_save_x = atlas->cursor_x;
+  cursor_save_y = atlas->cursor_y;
+
+  if ((height & (self->item_h_q-1)) != 0)
+    height = (height + self->item_h_q - 1) & ~(self->item_h_q - 1);
+
+  /* Require allocations in columns of 64 and rows of 8 */
+  g_assert (width == self->item_w);
+  g_assert ((height % self->item_h_q) == 0);
+
+  if (atlas->cursor_y + height > atlas->height)
+    {
+      /* Go to next column */
+      atlas->cursor_x += self->item_w;
+      atlas->cursor_y = 0;
+    }
+
+  if (atlas->cursor_x + width <= atlas->width &&
+      atlas->cursor_y + height <= atlas->height)
+    {
+      *out_x = atlas->cursor_x;
+      *out_y = atlas->cursor_y;
+      atlas->cursor_y += height;
+      return TRUE;
+    }
+
+  atlas->cursor_x = cursor_save_x;
+  atlas->cursor_y = cursor_save_y;
+
+  return FALSE;
+}
+
+static void
+gsk_gl_glyphy_library_finalize (GObject *object)
+{
+  GskGLGlyphyLibrary *self = (GskGLGlyphyLibrary *)object;
+
+  g_clear_pointer (&self->acc, glyphy_arc_accumulator_destroy);
+  g_clear_pointer (&self->acc_endpoints, g_array_unref);
+
+  G_OBJECT_CLASS (gsk_gl_glyphy_library_parent_class)->finalize (object);
+}
+
+GQuark quark_glyphy_font_key;
+
+static void
+gsk_gl_glyphy_library_class_init (GskGLGlyphyLibraryClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+  GskGLTextureLibraryClass *library_class = GSK_GL_TEXTURE_LIBRARY_CLASS (klass);
+
+  quark_glyphy_font_key = g_quark_from_static_string ("glyphy-font-key");
+
+  object_class->finalize = gsk_gl_glyphy_library_finalize;
+
+  library_class->allocate = gsk_gl_glyphy_library_allocate;
+  library_class->clear_cache = gsk_gl_glyphy_library_clear_cache;
+  library_class->init_atlas = gsk_gl_glyphy_library_init_atlas;
+}
+
+static void
+gsk_gl_glyphy_library_init (GskGLGlyphyLibrary *self)
+{
+  GskGLTextureLibrary *tl = (GskGLTextureLibrary *)self;
+
+  tl->max_entry_size = 0;
+  tl->max_frame_age = 512;
+  tl->atlas_width = 2048;
+  tl->atlas_height = 1024;
+  gsk_gl_texture_library_set_funcs (tl,
+                                    gsk_gl_glyphy_key_hash,
+                                    gsk_gl_glyphy_key_equal,
+                                    gsk_gl_glyphy_key_free,
+                                    gsk_gl_glyphy_value_free);
+
+  self->acc = glyphy_arc_accumulator_create ();
+  self->acc_endpoints = g_array_new (FALSE, FALSE, sizeof (glyphy_arc_endpoint_t));
+  self->item_w = ITEM_W;
+  self->item_h_q = ITEM_H_QUANTUM;
+}
+
+static glyphy_bool_t
+accumulate_endpoint (glyphy_arc_endpoint_t *endpoint,
+                     GArray                *endpoints)
+{
+  g_array_append_vals (endpoints, endpoint, 1);
+  return TRUE;
+}
+
+static void
+move_to (hb_draw_funcs_t *dfuncs,
+         GskPathBuilder  *builder,
+         hb_draw_state_t *st,
+         float            x,
+         float            y,
+         void            *data)
+{
+  gsk_path_builder_move_to (builder, x, y);
+}
+
+static void
+line_to (hb_draw_funcs_t *dfuncs,
+         GskPathBuilder  *builder,
+         hb_draw_state_t *st,
+         float            x,
+         float            y,
+         void            *data)
+{
+  gsk_path_builder_line_to (builder, x, y);
+}
+
+static void
+cubic_to (hb_draw_funcs_t *dfuncs,
+          GskPathBuilder  *builder,
+          hb_draw_state_t *st,
+          float            x1,
+          float            y1,
+          float            x2,
+          float            y2,
+          float            x3,
+          float            y3,
+          void            *data)
+{
+  gsk_path_builder_curve_to (builder, x1, y1, x2, y2, x3, y3);
+}
+
+static void
+close_path (hb_draw_funcs_t *dfuncs,
+            GskPathBuilder  *builder,
+            hb_draw_state_t *st,
+            void            *data)
+{
+  gsk_path_builder_close (builder);
+}
+
+static hb_draw_funcs_t *
+gsk_path_get_draw_funcs (void)
+{
+  static hb_draw_funcs_t *funcs = NULL;
+
+  if (!funcs)
+    {
+      funcs = hb_draw_funcs_create ();
+
+      hb_draw_funcs_set_move_to_func (funcs, (hb_draw_move_to_func_t) move_to, NULL, NULL);
+      hb_draw_funcs_set_line_to_func (funcs, (hb_draw_line_to_func_t) line_to, NULL, NULL);
+      hb_draw_funcs_set_cubic_to_func (funcs, (hb_draw_cubic_to_func_t) cubic_to, NULL, NULL);
+      hb_draw_funcs_set_close_path_func (funcs, (hb_draw_close_path_func_t) close_path, NULL, NULL);
+
+      hb_draw_funcs_make_immutable (funcs);
+    }
+
+  return funcs;
+}
+
+static gboolean
+acc_callback (GskPathOperation        op,
+              const graphene_point_t *pts,
+              gsize                   n_pts,
+              float                   weight,
+              gpointer                user_data)
+{
+  glyphy_arc_accumulator_t *acc = user_data;
+  glyphy_point_t p0, p1, p2, p3;
+
+  switch (op)
+    {
+    case GSK_PATH_MOVE:
+      p0.x = pts[0].x; p0.y = pts[0].y;
+      glyphy_arc_accumulator_move_to (acc, &p0);
+      break;
+    case GSK_PATH_CLOSE:
+      glyphy_arc_accumulator_close_path (acc);
+      break;
+    case GSK_PATH_LINE:
+      p1.x = pts[1].x; p1.y = pts[1].y;
+      glyphy_arc_accumulator_line_to (acc, &p1);
+      break;
+    case GSK_PATH_CURVE:
+      p1.x = pts[1].x; p1.y = pts[1].y;
+      p2.x = pts[2].x; p2.y = pts[2].y;
+      p3.x = pts[3].x; p3.y = pts[3].y;
+      glyphy_arc_accumulator_cubic_to (acc, &p1, &p2, &p3);
+      break;
+    case GSK_PATH_CONIC:
+    default:
+      g_assert_not_reached ();
+    }
+
+  return TRUE;
+}
+
+static inline gboolean
+encode_glyph (GskGLGlyphyLibrary *self,
+              hb_font_t          *font,
+              unsigned int        glyph_index,
+              double              tolerance_per_em,
+              glyphy_rgba_t      *buffer,
+              guint               buffer_len,
+              guint              *output_len,
+              guint              *nominal_width,
+              guint              *nominal_height,
+              glyphy_extents_t   *extents)
+{
+  hb_face_t *face = hb_font_get_face (font);
+  guint upem = hb_face_get_upem (face);
+  double tolerance = upem * tolerance_per_em;
+  double faraway = (double)upem / (MIN_FONT_SIZE * M_SQRT2);
+  double unit_size = (double) upem / GRID_SIZE;
+  double enlighten_max = (double) upem * ENLIGHTEN_MAX;
+  double embolden_max = (double) upem * EMBOLDEN_MAX;
+  double avg_fetch_achieved;
+  GskPathBuilder *builder;
+  GskPath *path, *simplified;
+
+  self->acc_endpoints->len = 0;
+
+  glyphy_arc_accumulator_reset (self->acc);
+  glyphy_arc_accumulator_set_tolerance (self->acc, tolerance);
+  glyphy_arc_accumulator_set_callback (self->acc,
+                                       (glyphy_arc_endpoint_accumulator_callback_t)accumulate_endpoint,
+                                       self->acc_endpoints);
+
+  builder = gsk_path_builder_new ();
+  hb_font_get_glyph_shape (font, glyph_index, gsk_path_get_draw_funcs (), builder);
+  path = gsk_path_builder_free_to_path (builder);
+  simplified = gsk_path_simplify (path);
+
+  gsk_path_foreach (simplified, GSK_PATH_FOREACH_ALLOW_CURVE, acc_callback, self->acc);
+  gsk_path_unref (simplified);
+  gsk_path_unref (path);
+
+  if (!glyphy_arc_accumulator_successful (self->acc))
+    return FALSE;
+
+  g_assert (glyphy_arc_accumulator_get_error (self->acc) <= tolerance);
+
+  if (self->acc_endpoints->len > 0)
+    glyphy_outline_winding_from_even_odd ((gpointer)self->acc_endpoints->data,
+                                          self->acc_endpoints->len,
+                                          FALSE);
+
+  if (!glyphy_arc_list_encode_blob2 ((gpointer)self->acc_endpoints->data,
+                                     self->acc_endpoints->len,
+                                     buffer,
+                                     buffer_len,
+                                     faraway,
+                                     unit_size,
+                                     enlighten_max,
+                                     embolden_max,
+                                     &avg_fetch_achieved,
+                                     output_len,
+                                     nominal_width,
+                                     nominal_height,
+                                     extents))
+    return FALSE;
+
+  glyphy_extents_scale (extents, 1./upem, 1./upem);
+
+  return TRUE;
+}
+
+static inline hb_font_t *
+get_nominal_size_hb_font (PangoFont *font)
+{
+  hb_font_t *hbfont;
+  const float *coords;
+  unsigned int length;
+
+  hbfont = (hb_font_t *) g_object_get_data ((GObject *)font, "glyph-nominal-size-font");
+  if (hbfont == NULL)
+    {
+      hbfont = hb_font_create (hb_font_get_face (pango_font_get_hb_font (font)));
+      coords = hb_font_get_var_coords_design (pango_font_get_hb_font (font), &length);
+      if (length > 0)
+        hb_font_set_var_coords_design (hbfont, coords, length);
+
+      g_object_set_data_full ((GObject *)font, "glyphy-nominal-size-font",
+                              hbfont, (GDestroyNotify)hb_font_destroy);
+    }
+
+  return hbfont;
+}
+
+gboolean
+gsk_gl_glyphy_library_add (GskGLGlyphyLibrary      *self,
+                           GskGLGlyphyKey          *key,
+                           PangoFont               *font,
+                           const GskGLGlyphyValue **out_value)
+{
+  static glyphy_rgba_t buffer[4096 * 16];
+  GskGLTextureLibrary *tl = (GskGLTextureLibrary *)self;
+  GskGLGlyphyValue *value;
+  glyphy_extents_t extents;
+  hb_font_t *hbfont;
+  guint packed_x;
+  guint packed_y;
+  guint nominal_w, nominal_h;
+  guint output_len = 0;
+  guint texture_id;
+  guint width, height;
+
+  g_assert (GSK_IS_GL_GLYPHY_LIBRARY (self));
+  g_assert (key != NULL);
+  g_assert (font != NULL);
+  g_assert (out_value != NULL);
+
+  hbfont = get_nominal_size_hb_font (font);
+
+  /* Convert the glyph to a list of arcs */
+  if (!encode_glyph (self, hbfont, key->glyph, TOLERANCE,
+                     buffer, sizeof buffer, &output_len,
+                     &nominal_w, &nominal_h, &extents))
+    return FALSE;
+
+  /* Allocate space for list within atlas */
+  width = self->item_w;
+  height = (output_len + width - 1) / width;
+  value = gsk_gl_texture_library_pack (tl, key, sizeof *value,
+                                       width, height, 0,
+                                       &packed_x, &packed_y);
+
+  g_assert (packed_x % ITEM_W == 0);
+  g_assert (packed_y % ITEM_H_QUANTUM == 0);
+
+  /* Make sure we found space to pack */
+  texture_id = GSK_GL_TEXTURE_ATLAS_ENTRY_TEXTURE (value);
+  if (texture_id == 0)
+    return FALSE;
+
+  if (!glyphy_extents_is_empty (&extents))
+    {
+      /* Connect the texture for data upload */
+      glActiveTexture (GL_TEXTURE0);
+      glBindTexture (GL_TEXTURE_2D, texture_id);
+
+      g_assert (width > 0);
+      g_assert (height > 0);
+
+      /* Upload the arc list */
+      if (width * height == output_len)
+        {
+          glTexSubImage2D (GL_TEXTURE_2D, 0,
+                           packed_x, packed_y,
+                           width, height,
+                           GL_RGBA, GL_UNSIGNED_BYTE,
+                           buffer);
+        }
+      else
+        {
+          glTexSubImage2D (GL_TEXTURE_2D, 0,
+                           packed_x, packed_y,
+                           width, height - 1,
+                           GL_RGBA, GL_UNSIGNED_BYTE,
+                           buffer);
+          /* Upload the last row separately */
+          glTexSubImage2D (GL_TEXTURE_2D, 0,
+                           packed_x, packed_y + height - 1,
+                           output_len - (width * (height - 1)), 1,
+                           GL_RGBA, GL_UNSIGNED_BYTE,
+                           buffer + (width * (height - 1)));
+        }
+    }
+
+  value->extents.min_x = extents.min_x;
+  value->extents.min_y = extents.min_y;
+  value->extents.max_x = extents.max_x;
+  value->extents.max_y = extents.max_y;
+  value->nominal_w = nominal_w;
+  value->nominal_h = nominal_h;
+  value->atlas_x = packed_x / self->item_w;
+  value->atlas_y = packed_y / self->item_h_q;
+
+  *out_value = value;
+
+  return TRUE;
+}
@@ -0,0 +1,142 @@
+/* gskglglyphylibraryprivate.h
+ *
+ * Copyright 2020-2022 Christian Hergert <chergert@redhat.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ */
+
+#ifndef __GSK_GL_GLYPHY_LIBRARY_PRIVATE_H__
+#define __GSK_GL_GLYPHY_LIBRARY_PRIVATE_H__
+
+#include <glyphy.h>
+#include <pango/pango.h>
+
+#include "gskgltexturelibraryprivate.h"
+
+G_BEGIN_DECLS
+
+#define GSK_TYPE_GL_GLYPHY_LIBRARY (gsk_gl_glyphy_library_get_type())
+
+typedef guint FontKey;
+
+extern GQuark quark_glyphy_font_key;
+
+static inline FontKey
+gsk_gl_glyphy_library_get_font_key (PangoFont *font)
+{
+  FontKey key;
+
+  key = (FontKey) GPOINTER_TO_UINT (g_object_get_qdata ((GObject *)font, quark_glyphy_font_key));
+  if (key == 0)
+    {
+      PangoFontDescription *desc = pango_font_describe (font);
+      pango_font_description_set_size (desc, 10 * PANGO_SCALE);
+      key = (FontKey) pango_font_description_hash (desc);
+      pango_font_description_free (desc);
+      g_object_set_qdata ((GObject *)font, quark_glyphy_font_key, GUINT_TO_POINTER (key));
+    }
+
+  return key;
+}
+
+static inline float
+gsk_gl_glyphy_library_get_font_scale (PangoFont *font)
+{
+  hb_font_t *hbfont;
+  int x_scale, y_scale;
+
+  hbfont = pango_font_get_hb_font (font);
+  hb_font_get_scale (hbfont, &x_scale, &y_scale);
+
+  return MAX (x_scale, y_scale) / 1000.0;
+}
+
+
+typedef struct _GskGLGlyphyKey
+{
+  FontKey font;
+  PangoGlyph glyph;
+} GskGLGlyphyKey;
+
+typedef struct _GskGLGlyphyValue
+{
+  GskGLTextureAtlasEntry entry;
+  struct {
+    float min_x;
+    float min_y;
+    float max_x;
+    float max_y;
+  } extents;
+  guint nominal_w;
+  guint nominal_h;
+  guint atlas_x;
+  guint atlas_y;
+} GskGLGlyphyValue;
+
+G_DECLARE_FINAL_TYPE (GskGLGlyphyLibrary, gsk_gl_glyphy_library, GSK, GL_GLYPHY_LIBRARY, GskGLTextureLibrary)
+
+struct _GskGLGlyphyLibrary
+{
+  GskGLTextureLibrary parent_instance;
+  glyphy_arc_accumulator_t *acc;
+  GArray *acc_endpoints;
+  guint item_w;
+  guint item_h_q;
+  struct {
+    GskGLGlyphyKey key;
+    const GskGLGlyphyValue *value;
+  } front[256];
+};
+
+GskGLGlyphyLibrary *gsk_gl_glyphy_library_new (GskGLDriver             *driver);
+gboolean            gsk_gl_glyphy_library_add (GskGLGlyphyLibrary      *self,
+                                               GskGLGlyphyKey          *key,
+                                               PangoFont               *font,
+                                               const GskGLGlyphyValue **out_value);
+
+static inline guint
+gsk_gl_glyphy_library_lookup_or_add (GskGLGlyphyLibrary      *self,
+                                     const GskGLGlyphyKey    *key,
+                                     PangoFont               *font,
+                                     const GskGLGlyphyValue **out_value)
+{
+  GskGLTextureAtlasEntry *entry;
+  guint front_index = key->glyph & 0xFF;
+
+  if (memcmp (key, &self->front[front_index], sizeof *key) == 0)
+    {
+      *out_value = self->front[front_index].value;
+    }
+  else if (gsk_gl_texture_library_lookup ((GskGLTextureLibrary *)self, key, &entry))
+    {
+      *out_value = (GskGLGlyphyValue *)entry;
+      self->front[front_index].key = *key;
+      self->front[front_index].value = *out_value;
+    }
+  else
+    {
+      GskGLGlyphyKey *k = g_slice_copy (sizeof *key, key);
+      gsk_gl_glyphy_library_add (self, k, font, out_value);
+      self->front[front_index].key = *key;
+      self->front[front_index].value = *out_value;
+    }
+
+  return GSK_GL_TEXTURE_ATLAS_ENTRY_TEXTURE (*out_value);
+}
+
+G_END_DECLS
+
+#endif /* __GSK_GL_GLYPHY_LIBRARY_PRIVATE_H__ */
@@ -1,71 +1,71 @@
 GSK_GL_DEFINE_PROGRAM (blend,
-                       "/org/gtk/libgsk/gl/blend.glsl",
+                       GSK_GL_SHADER_SINGLE (GSK_GL_SHADER_RESOURCE ("blend.glsl")),
                       GSK_GL_ADD_UNIFORM (1, BLEND_SOURCE2, u_source2)
                       GSK_GL_ADD_UNIFORM (2, BLEND_MODE, u_mode))

 GSK_GL_DEFINE_PROGRAM (blit,
-                       "/org/gtk/libgsk/gl/blit.glsl",
+                       GSK_GL_SHADER_SINGLE (GSK_GL_SHADER_RESOURCE ("blit.glsl")),
                       GSK_GL_NO_UNIFORMS)

 GSK_GL_DEFINE_PROGRAM (blur,
-                       "/org/gtk/libgsk/gl/blur.glsl",
+                       GSK_GL_SHADER_SINGLE (GSK_GL_SHADER_RESOURCE ("blur.glsl")),
                       GSK_GL_ADD_UNIFORM (1, BLUR_RADIUS, u_blur_radius)
                       GSK_GL_ADD_UNIFORM (2, BLUR_SIZE, u_blur_size)
                       GSK_GL_ADD_UNIFORM (3, BLUR_DIR, u_blur_dir))

 GSK_GL_DEFINE_PROGRAM (border,
-                       "/org/gtk/libgsk/gl/border.glsl",
+                       GSK_GL_SHADER_SINGLE (GSK_GL_SHADER_RESOURCE ("border.glsl")),
                       GSK_GL_ADD_UNIFORM (1, BORDER_WIDTHS, u_widths)
                       GSK_GL_ADD_UNIFORM (2, BORDER_OUTLINE_RECT, u_outline_rect))

 GSK_GL_DEFINE_PROGRAM (color,
-                       "/org/gtk/libgsk/gl/color.glsl",
+                       GSK_GL_SHADER_SINGLE (GSK_GL_SHADER_RESOURCE ("color.glsl")),
                       GSK_GL_NO_UNIFORMS)

 GSK_GL_DEFINE_PROGRAM (coloring,
-                       "/org/gtk/libgsk/gl/coloring.glsl",
+                       GSK_GL_SHADER_SINGLE (GSK_GL_SHADER_RESOURCE ("coloring.glsl")),
                       GSK_GL_NO_UNIFORMS)

 GSK_GL_DEFINE_PROGRAM (color_matrix,
-                       "/org/gtk/libgsk/gl/color_matrix.glsl",
+                       GSK_GL_SHADER_SINGLE (GSK_GL_SHADER_RESOURCE ("color_matrix.glsl")),
                       GSK_GL_ADD_UNIFORM (1, COLOR_MATRIX_COLOR_MATRIX, u_color_matrix)
                       GSK_GL_ADD_UNIFORM (2, COLOR_MATRIX_COLOR_OFFSET, u_color_offset))

 GSK_GL_DEFINE_PROGRAM (conic_gradient,
-                       "/org/gtk/libgsk/gl/conic_gradient.glsl",
+                       GSK_GL_SHADER_SINGLE (GSK_GL_SHADER_RESOURCE ("conic_gradient.glsl")),
                       GSK_GL_ADD_UNIFORM (1, CONIC_GRADIENT_COLOR_STOPS, u_color_stops)
                       GSK_GL_ADD_UNIFORM (2, CONIC_GRADIENT_NUM_COLOR_STOPS, u_num_color_stops)
                       GSK_GL_ADD_UNIFORM (3, CONIC_GRADIENT_GEOMETRY, u_geometry))

 GSK_GL_DEFINE_PROGRAM (cross_fade,
-                       "/org/gtk/libgsk/gl/cross_fade.glsl",
+                       GSK_GL_SHADER_SINGLE (GSK_GL_SHADER_RESOURCE ("cross_fade.glsl")),
                       GSK_GL_ADD_UNIFORM (1, CROSS_FADE_PROGRESS, u_progress)
                       GSK_GL_ADD_UNIFORM (2, CROSS_FADE_SOURCE2, u_source2))

 GSK_GL_DEFINE_PROGRAM (filled_border,
-                       "/org/gtk/libgsk/gl/filled_border.glsl",
+                       GSK_GL_SHADER_SINGLE (GSK_GL_SHADER_RESOURCE ("filled_border.glsl")),
                       GSK_GL_ADD_UNIFORM (1, FILLED_BORDER_WIDTHS, u_widths)
                       GSK_GL_ADD_UNIFORM (2, FILLED_BORDER_OUTLINE_RECT, u_outline_rect))

 GSK_GL_DEFINE_PROGRAM (inset_shadow,
-                       "/org/gtk/libgsk/gl/inset_shadow.glsl",
+                       GSK_GL_SHADER_SINGLE (GSK_GL_SHADER_RESOURCE ("inset_shadow.glsl")),
                       GSK_GL_ADD_UNIFORM (1, INSET_SHADOW_SPREAD, u_spread)
                       GSK_GL_ADD_UNIFORM (2, INSET_SHADOW_OFFSET, u_offset)
                       GSK_GL_ADD_UNIFORM (3, INSET_SHADOW_OUTLINE_RECT, u_outline_rect))

 GSK_GL_DEFINE_PROGRAM (linear_gradient,
-                       "/org/gtk/libgsk/gl/linear_gradient.glsl",
+                       GSK_GL_SHADER_SINGLE (GSK_GL_SHADER_RESOURCE ("linear_gradient.glsl")),
                       GSK_GL_ADD_UNIFORM (1, LINEAR_GRADIENT_COLOR_STOPS, u_color_stops)
                       GSK_GL_ADD_UNIFORM (2, LINEAR_GRADIENT_NUM_COLOR_STOPS, u_num_color_stops)
                       GSK_GL_ADD_UNIFORM (3, LINEAR_GRADIENT_POINTS, u_points)
                       GSK_GL_ADD_UNIFORM (4, LINEAR_GRADIENT_REPEAT, u_repeat))

 GSK_GL_DEFINE_PROGRAM (outset_shadow,
-                       "/org/gtk/libgsk/gl/outset_shadow.glsl",
+                       GSK_GL_SHADER_SINGLE (GSK_GL_SHADER_RESOURCE ("outset_shadow.glsl")),
                       GSK_GL_ADD_UNIFORM (1, OUTSET_SHADOW_OUTLINE_RECT, u_outline_rect))

 GSK_GL_DEFINE_PROGRAM (radial_gradient,
-                       "/org/gtk/libgsk/gl/radial_gradient.glsl",
+                       GSK_GL_SHADER_SINGLE (GSK_GL_SHADER_RESOURCE ("radial_gradient.glsl")),
                       GSK_GL_ADD_UNIFORM (1, RADIAL_GRADIENT_COLOR_STOPS, u_color_stops)
                       GSK_GL_ADD_UNIFORM (2, RADIAL_GRADIENT_NUM_COLOR_STOPS, u_num_color_stops)
                       GSK_GL_ADD_UNIFORM (3, RADIAL_GRADIENT_REPEAT, u_repeat)
@@ -73,12 +73,30 @@ GSK_GL_DEFINE_PROGRAM (radial_gradient,
                       GSK_GL_ADD_UNIFORM (5, RADIAL_GRADIENT_GEOMETRY, u_geometry))

 GSK_GL_DEFINE_PROGRAM (repeat,
-                       "/org/gtk/libgsk/gl/repeat.glsl",
+                       GSK_GL_SHADER_SINGLE (GSK_GL_SHADER_RESOURCE ("repeat.glsl")),
                       GSK_GL_ADD_UNIFORM (1, REPEAT_CHILD_BOUNDS, u_child_bounds)
                       GSK_GL_ADD_UNIFORM (2, REPEAT_TEXTURE_RECT, u_texture_rect))

 GSK_GL_DEFINE_PROGRAM (unblurred_outset_shadow,
-                       "/org/gtk/libgsk/gl/unblurred_outset_shadow.glsl",
+                       GSK_GL_SHADER_SINGLE (GSK_GL_SHADER_RESOURCE ("unblurred_outset_shadow.glsl")),
                       GSK_GL_ADD_UNIFORM (1, UNBLURRED_OUTSET_SHADOW_SPREAD, u_spread)
                       GSK_GL_ADD_UNIFORM (2, UNBLURRED_OUTSET_SHADOW_OFFSET, u_offset)
                       GSK_GL_ADD_UNIFORM (3, UNBLURRED_OUTSET_SHADOW_OUTLINE_RECT, u_outline_rect))
+
+GSK_GL_DEFINE_PROGRAM (glyphy,
+                       GSK_GL_SHADER_JOINED (VERTEX,
+                                             GSK_GL_SHADER_RESOURCE ("glyphy.vs.glsl"),
+                                             NULL)
+                       GSK_GL_SHADER_JOINED (FRAGMENT,
+                                             GSK_GL_SHADER_RESOURCE ("glyphy.atlas.glsl"),
+                                             GSK_GL_SHADER_STRING (glyphy_common_shader_source ()),
+                                             GSK_GL_SHADER_STRING ("#define GLYPHY_SDF_PSEUDO_DISTANCE 1\n"),
+                                             GSK_GL_SHADER_STRING (glyphy_sdf_shader_source ()),
+                                             GSK_GL_SHADER_RESOURCE ("glyphy.fs.glsl"),
+                                             NULL),
+                       GSK_GL_ADD_UNIFORM (0, GLYPHY_CONTRAST, u_contrast)
+                       GSK_GL_ADD_UNIFORM (1, GLYPHY_GAMMA_ADJUST, u_gamma_adjust)
+                       GSK_GL_ADD_UNIFORM (2, GLYPHY_OUTLINE_THICKNESS, u_outline_thickness)
+                       GSK_GL_ADD_UNIFORM (3, GLYPHY_OUTLINE, u_outline)
+                       GSK_GL_ADD_UNIFORM (4, GLYPHY_BOLDNESS, u_boldness)
+                       GSK_GL_ADD_UNIFORM (6, GLYPHY_ATLAS_INFO, u_atlas_info))
@@ -33,10 +33,12 @@
 #include <gsk/gskroundedrectprivate.h>
 #include <math.h>
 #include <string.h>
+#include <pango/pangofc-font.h>

 #include "gskglcommandqueueprivate.h"
 #include "gskgldriverprivate.h"
 #include "gskglglyphlibraryprivate.h"
+#include "gskglglyphylibraryprivate.h"
 #include "gskgliconlibraryprivate.h"
 #include "gskglprogramprivate.h"
 #include "gskglrenderjobprivate.h"
@@ -2455,7 +2457,9 @@ gsk_gl_render_job_visit_blurred_outset_shadow_node (GskGLRenderJob      *job,
      scaled_outline.corner[i].height *= scale_y;
    }

-  cached_tid = gsk_gl_shadow_library_lookup (job->driver->shadows, &scaled_outline, blur_radius);
+  cached_tid = gsk_gl_shadow_library_lookup (job->driver->shadows_library,
+                                             &scaled_outline,
+                                             blur_radius);

  if (cached_tid == 0)
    {
@@ -2517,7 +2521,7 @@ gsk_gl_render_job_visit_blurred_outset_shadow_node (GskGLRenderJob      *job,
                                           blur_radius * scale_x,
                                           blur_radius * scale_y);

-      gsk_gl_shadow_library_insert (job->driver->shadows,
+      gsk_gl_shadow_library_insert (job->driver->shadows_library,
                                    &scaled_outline,
                                    blur_radius,
                                    blurred_texture_id);
@@ -2927,10 +2931,10 @@ compute_phase_and_pos (float value, float *pos)
 }

 static inline void
-gsk_gl_render_job_visit_text_node (GskGLRenderJob      *job,
-                                   const GskRenderNode *node,
-                                   const GdkRGBA       *color,
-                                   gboolean             force_color)
+gsk_gl_render_job_visit_text_node_legacy (GskGLRenderJob      *job,
+                                          const GskRenderNode *node,
+                                          const GdkRGBA       *color,
+                                          gboolean             force_color)
 {
  const PangoFont *font = gsk_text_node_get_font (node);
  const PangoGlyphInfo *glyphs = gsk_text_node_get_glyphs (node, NULL);
@@ -2939,7 +2943,7 @@ gsk_gl_render_job_visit_text_node (GskGLRenderJob      *job,
  guint num_glyphs = gsk_text_node_get_num_glyphs (node);
  float x = offset->x + job->offset_x;
  float y = offset->y + job->offset_y;
-  GskGLGlyphLibrary *library = job->driver->glyphs;
+  GskGLGlyphLibrary *library = job->driver->glyphs_library;
  GskGLCommandBatch *batch;
  int x_position = 0;
  GskGLGlyphKey lookup;
@@ -3065,6 +3069,259 @@ gsk_gl_render_job_visit_text_node (GskGLRenderJob      *job,
  gsk_gl_render_job_end_draw (job);
 }

+typedef struct
+{
+  float x;
+  float y;
+  float g16hi;
+  float g16lo;
+} EncodedGlyph;
+
+static inline unsigned int
+glyph_encode (guint atlas_x ,  /* 7 bits */
+              guint atlas_y,   /* 7 bits */
+              guint corner_x,  /* 1 bit */
+              guint corner_y,  /* 1 bit */
+              guint nominal_w, /* 6 bits */
+              guint nominal_h) /* 6 bits */
+{
+  guint x, y;
+
+  g_assert (0 == (atlas_x & ~0x7F));
+  g_assert (0 == (atlas_y & ~0x7F));
+  g_assert (0 == (corner_x & ~1));
+  g_assert (0 == (corner_y & ~1));
+  g_assert (0 == (nominal_w & ~0x3F));
+  g_assert (0 == (nominal_h & ~0x3F));
+
+  x = (((atlas_x << 6) | nominal_w) << 1) | corner_x;
+  y = (((atlas_y << 6) | nominal_h) << 1) | corner_y;
+
+  return (x << 16) | y;
+}
+
+static inline void
+encoded_glyph_init (EncodedGlyph           *eg,
+                    float                   x,
+                    float                   y,
+                    guint                   corner_x,
+                    guint                   corner_y,
+                    const GskGLGlyphyValue *gi)
+{
+  guint encoded = glyph_encode (gi->atlas_x, gi->atlas_y, corner_x, corner_y, gi->nominal_w, gi->nominal_h);
+
+  eg->x = x;
+  eg->y = y;
+  eg->g16hi = encoded >> 16;
+  eg->g16lo = encoded & 0xFFFF;
+}
+
+static inline void
+add_encoded_glyph (GskGLDrawVertex    *vertices,
+                   const EncodedGlyph *eg,
+                   const guint16       c[4])
+{
+  *vertices = (GskGLDrawVertex) { .position = { eg->x, eg->y}, .uv = { eg->g16hi, eg->g16lo}, .color = { c[0], c[1], c[2], c[3] } };
+}
+
+static void
+get_synthetic_font_params (PangoFont   *font,
+                           gboolean    *embolden,
+                           PangoMatrix *matrix)
+{
+  *embolden = FALSE;
+
+  if (PANGO_IS_FC_FONT (font))
+    {
+      FcPattern *pattern = pango_fc_font_get_pattern (PANGO_FC_FONT (font));
+      FcBool b;
+      FcMatrix mat;
+      FcMatrix *m;
+
+      if (FcPatternGetBool (pattern, FC_EMBOLDEN, 0, &b) == FcResultMatch)
+        *embolden = b;
+
+      FcMatrixInit (&mat);
+      for (int i = 0; FcPatternGetMatrix (pattern, FC_MATRIX, i, &m) == FcResultMatch; i++)
+        FcMatrixMultiply (&mat, &mat, m);
+
+      matrix->xx = mat.xx;
+      matrix->xy = mat.xy;
+      matrix->yx = mat.yx;
+      matrix->yy = mat.yy;
+    }
+}
+
+static inline void
+gsk_gl_render_job_visit_text_node_glyphy (GskGLRenderJob      *job,
+                                          const GskRenderNode *node,
+                                          const GdkRGBA       *color)
+{
+  const graphene_point_t *offset;
+  const PangoGlyphInfo *glyphs;
+  const PangoGlyphInfo *gi;
+  GskGLGlyphyLibrary *library;
+  GskGLCommandBatch *batch;
+  PangoFont *font;
+  GskGLDrawVertex *vertices;
+  const guint16 *c;
+  GskGLGlyphyKey lookup;
+  guint16 cc[4];
+  float x;
+  float y;
+  guint last_texture = 0;
+  guint num_glyphs;
+  guint used = 0;
+  guint i;
+  int x_position = 0;
+  float font_scale;
+  gboolean embolden;
+  PangoMatrix matrix = PANGO_MATRIX_INIT;
+
+#define GRID_SIZE 20
+
+  g_assert (!gsk_text_node_has_color_glyphs (node));
+
+  if (!(num_glyphs = gsk_text_node_get_num_glyphs (node)))
+    return;
+
+  if (RGBA_IS_CLEAR (color))
+    return;
+
+  font = (PangoFont *)gsk_text_node_get_font (node);
+  get_synthetic_font_params (font, &embolden, &matrix);
+
+  glyphs = gsk_text_node_get_glyphs (node, NULL);
+  library = job->driver->glyphy_library;
+  offset = gsk_text_node_get_offset (node);
+  x = offset->x + job->offset_x;
+  y = offset->y + job->offset_y;
+
+  rgba_to_half (color, cc);
+  c = cc;
+
+  gsk_gl_render_job_begin_draw (job, CHOOSE_PROGRAM (job, glyphy));
+
+  batch = gsk_gl_command_queue_get_batch (job->command_queue);
+  vertices = gsk_gl_command_queue_add_n_vertices (job->command_queue, num_glyphs);
+
+  lookup.font = gsk_gl_glyphy_library_get_font_key (font);
+  font_scale = gsk_gl_glyphy_library_get_font_scale (font);
+
+  for (i = 0, gi = glyphs; i < num_glyphs; i++, gi++)
+    {
+      const GskGLGlyphyValue *glyph;
+      float cx = 0, cy = 0;
+      guint texture_id;
+
+      lookup.glyph = gi->glyph;
+      texture_id = gsk_gl_glyphy_library_lookup_or_add (library, &lookup, font, &glyph);
+
+      if G_UNLIKELY (texture_id == 0)
+        continue;
+
+      if G_UNLIKELY (last_texture != texture_id || batch->draw.vbo_count + GSK_GL_N_VERTICES > 0xffff)
+        {
+          if G_LIKELY (last_texture != 0)
+            {
+              guint vbo_offset = batch->draw.vbo_offset + batch->draw.vbo_count;
+
+              /* Since we have batched added our VBO vertices to avoid repeated
+               * calls to the buffer, we need to manually tweak the vbo offset
+               * of the new batch as otherwise it will point at the end of our
+               * vbo array.
+               */
+              gsk_gl_render_job_split_draw (job);
+              batch = gsk_gl_command_queue_get_batch (job->command_queue);
+              batch->draw.vbo_offset = vbo_offset;
+            }
+
+          gsk_gl_program_set_uniform4i (job->current_program,
+                                        UNIFORM_GLYPHY_ATLAS_INFO, 0,
+                                        GSK_GL_TEXTURE_LIBRARY (library)->atlas_width,
+                                        GSK_GL_TEXTURE_LIBRARY (library)->atlas_height,
+                                        library->item_w,
+                                        library->item_h_q);
+          gsk_gl_program_set_uniform_texture (job->current_program,
+                                              UNIFORM_SHARED_SOURCE, 0,
+                                              GL_TEXTURE_2D,
+                                              GL_TEXTURE0,
+                                              texture_id);
+          gsk_gl_program_set_uniform1f (job->current_program,
+                                        UNIFORM_GLYPHY_GAMMA_ADJUST, 0,
+                                        1.0);
+          gsk_gl_program_set_uniform1f (job->current_program,
+                                        UNIFORM_GLYPHY_CONTRAST, 0,
+                                        1.0);
+
+          /* 0.0208 is the value used by freetype for synthetic emboldening */
+          gsk_gl_program_set_uniform1f (job->current_program,
+                                        UNIFORM_GLYPHY_BOLDNESS, 0,
+                                        embolden ? 0.0208 * GRID_SIZE : 0.0);
+
+#if 0
+          gsk_gl_program_set_uniform1f (job->current_program,
+                                        UNIFORM_GLYPHY_OUTLINE_THICKNESS, 0,
+                                        1.0);
+          gsk_gl_program_set_uniform1f (job->current_program,
+                                        UNIFORM_GLYPHY_OUTLINE, 0,
+                                        1.0);
+#endif
+
+          last_texture = texture_id;
+        }
+
+      cx = (float)(x_position + gi->geometry.x_offset) / PANGO_SCALE;
+      if G_UNLIKELY (gi->geometry.y_offset != 0)
+        cy = (float)(gi->geometry.y_offset) / PANGO_SCALE;
+
+      x_position += gi->geometry.width;
+
+      EncodedGlyph encoded[4];
+#define ENCODE_CORNER(_cx, _cy) \
+  G_STMT_START { \
+    float _dx = _cx * (glyph->extents.max_x - glyph->extents.min_x); \
+    float _dy = _cy * (glyph->extents.max_y - glyph->extents.min_y); \
+    float _vx = x + cx + font_scale * (glyph->extents.min_x + matrix.xx * _dx + matrix.xy * _dy); \
+    float _vy = y + cy - font_scale * (glyph->extents.min_y + matrix.yx * _dx + matrix.yy * _dy); \
+    encoded_glyph_init (&encoded[_cx * 2 + _cy], _vx, _vy, _cx, _cy, glyph); \
+  } G_STMT_END
+      ENCODE_CORNER (0, 0);
+      ENCODE_CORNER (0, 1);
+      ENCODE_CORNER (1, 0);
+      ENCODE_CORNER (1, 1);
+#undef ENCODE_CORNER
+
+      add_encoded_glyph (vertices++, &encoded[0], c);
+      add_encoded_glyph (vertices++, &encoded[1], c);
+      add_encoded_glyph (vertices++, &encoded[2], c);
+
+      add_encoded_glyph (vertices++, &encoded[1], c);
+      add_encoded_glyph (vertices++, &encoded[2], c);
+      add_encoded_glyph (vertices++, &encoded[3], c);
+
+      batch->draw.vbo_count += GSK_GL_N_VERTICES;
+      used++;
+    }
+
+  if (used != num_glyphs)
+    gsk_gl_command_queue_retract_n_vertices (job->command_queue, num_glyphs - used);
+
+  gsk_gl_render_job_end_draw (job);
+}
+
+static inline void
+gsk_gl_render_job_visit_text_node (GskGLRenderJob      *job,
+                                   const GskRenderNode *node,
+                                   const GdkRGBA       *color,
+                                   gboolean             force_color)
+{
+  if (!gsk_text_node_has_color_glyphs (node))
+    gsk_gl_render_job_visit_text_node_glyphy (job, node, color);
+  else
+    gsk_gl_render_job_visit_text_node_legacy (job, node, color, force_color);
+}
+
 static inline void
 gsk_gl_render_job_visit_shadow_node (GskGLRenderJob      *job,
                                     const GskRenderNode *node)
@@ -3442,14 +3699,14 @@ gsk_gl_render_job_upload_texture (GskGLRenderJob       *job,
                                  GdkTexture           *texture,
                                  GskGLRenderOffscreen *offscreen)
 {
-  if (gsk_gl_texture_library_can_cache ((GskGLTextureLibrary *)job->driver->icons,
+  if (gsk_gl_texture_library_can_cache ((GskGLTextureLibrary *)job->driver->icons_library,
                                        texture->width,
                                        texture->height) &&
      !GDK_IS_GL_TEXTURE (texture))
    {
      const GskGLIconData *icon_data;

-      gsk_gl_icon_library_lookup_or_add (job->driver->icons, texture, &icon_data);
+      gsk_gl_icon_library_lookup_or_add (job->driver->icons_library, texture, &icon_data);
      offscreen->texture_id = GSK_GL_TEXTURE_ATLAS_ENTRY_TEXTURE (icon_data);
      memcpy (&offscreen->area, &icon_data->entry.area, sizeof offscreen->area);
    }
@@ -3767,6 +4024,11 @@ gsk_gl_render_job_visit_node (GskGLRenderJob      *job,
      gsk_gl_render_job_visit_as_fallback (job, node);
    break;

+    case GSK_FILL_NODE:
+    case GSK_STROKE_NODE:
+      gsk_gl_render_job_visit_as_fallback (job, node);
+    break;
+
    case GSK_NOT_A_RENDER_NODE:
    default:
      g_assert_not_reached ();
@@ -29,9 +29,9 @@

 struct _GskGLShadowLibrary
 {
-  GObject        parent_instance;
+  GObject      parent_instance;
  GskGLDriver *driver;
-  GArray        *shadows;
+  GArray      *shadows;
 };

 typedef struct _Shadow
@@ -27,7 +27,10 @@
 #include "gskgldriverprivate.h"
 #include "gskgltexturelibraryprivate.h"

-#define MAX_FRAME_AGE 60
+#define DEFAULT_MAX_FRAME_AGE 60
+#define DEFAULT_ATLAS_WIDTH 512
+#define DEFAULT_ATLAS_HEIGHT 512
+#define MAX_OLD_RATIO 0.5

 G_DEFINE_ABSTRACT_TYPE (GskGLTextureLibrary, gsk_gl_texture_library, G_TYPE_OBJECT)

@@ -39,6 +42,143 @@ enum {

 static GParamSpec *properties [N_PROPS];

+static void
+gsk_gl_texture_atlas_free (GskGLTextureAtlas *atlas)
+{
+  if (atlas->texture_id != 0)
+    {
+      glDeleteTextures (1, &atlas->texture_id);
+      atlas->texture_id = 0;
+    }
+
+  g_clear_pointer (&atlas->nodes, g_free);
+  g_slice_free (GskGLTextureAtlas, atlas);
+}
+
+static gboolean
+gsk_gl_texture_library_real_compact (GskGLTextureLibrary *self,
+                                     gint64               frame_id)
+{
+  GPtrArray *removed = NULL;
+  gboolean ret = FALSE;
+  gboolean periodic_scan;
+
+  g_assert (GSK_IS_GL_TEXTURE_LIBRARY (self));
+
+  periodic_scan = (self->max_frame_age > 0 &&
+                   (frame_id % self->max_frame_age) == 0);
+
+  for (guint i = self->atlases->len; i > 0; i--)
+    {
+      GskGLTextureAtlas *atlas = g_ptr_array_index (self->atlases, i - 1);
+
+      if (gsk_gl_texture_atlas_get_unused_ratio (atlas) > MAX_OLD_RATIO)
+        {
+          GSK_NOTE (GLYPH_CACHE,
+                    g_message ("Dropping atlas %d (%g.2%% old)", i,
+                               100.0 * gsk_gl_texture_atlas_get_unused_ratio (atlas)));
+          if (removed == NULL)
+            removed = g_ptr_array_new_with_free_func ((GDestroyNotify)gsk_gl_texture_atlas_free);
+          g_ptr_array_add (removed, g_ptr_array_steal_index (self->atlases, i - 1));
+        }
+    }
+
+  if (periodic_scan || removed != NULL)
+    {
+      GskGLTextureAtlasEntry *entry;
+      GHashTableIter iter;
+      guint dropped = 0;
+      guint atlased = 0;
+
+      g_hash_table_iter_init (&iter, self->hash_table);
+      while (g_hash_table_iter_next (&iter, NULL, (gpointer *)&entry))
+        {
+          if (entry->is_atlased)
+            {
+              if (removed && g_ptr_array_find (removed, entry->atlas, NULL))
+                {
+                  g_hash_table_iter_remove (&iter);
+                  dropped++;
+                }
+              else if (periodic_scan)
+                {
+                  gsk_gl_texture_atlas_entry_mark_unused (entry);
+                  entry->accessed = FALSE;
+                  if (entry->is_atlased)
+                    atlased++;
+                }
+            }
+          else if (!entry->accessed)
+            {
+              gsk_gl_driver_release_texture (self->driver, entry->texture);
+              g_hash_table_iter_remove (&iter);
+              dropped++;
+            }
+        }
+
+      GSK_NOTE (GLYPH_CACHE, g_message ("%s: Dropped %d individual items",
+                                        G_OBJECT_TYPE_NAME (self),
+                                        dropped);
+                             g_message ("%s: %d items cached (%d atlased, %d individually)",
+                                        G_OBJECT_TYPE_NAME (self),
+                                        g_hash_table_size (self->hash_table),
+                                        atlased,
+                                        g_hash_table_size (self->hash_table) - atlased));
+
+      if (dropped > 0)
+        gsk_gl_texture_library_clear_cache (self);
+
+      ret = TRUE;
+
+      g_clear_pointer (&removed, g_ptr_array_unref);
+    }
+
+  GSK_NOTE (GLYPH_CACHE, {
+    static gint64 last_message;
+    gint64 now = g_get_monotonic_time ();
+    if (now - last_message > G_USEC_PER_SEC)
+      {
+        last_message = now;
+        g_message ("%s contains %d atlases",
+                   G_OBJECT_TYPE_NAME (self),
+                   self->atlases->len);
+      }
+  });
+
+  return ret;
+}
+
+static gboolean
+gsk_gl_texture_library_real_allocate (GskGLTextureLibrary *self,
+                                      GskGLTextureAtlas   *atlas,
+                                      int                  width,
+                                      int                  height,
+                                      int                 *out_x,
+                                      int                 *out_y)
+{
+  stbrp_rect rect;
+
+  g_assert (GSK_IS_GL_TEXTURE_LIBRARY (self));
+  g_assert (atlas != NULL);
+  g_assert (width > 0);
+  g_assert (height > 0);
+  g_assert (out_x != NULL);
+  g_assert (out_y != NULL);
+
+  rect.w = width;
+  rect.h = height;
+
+  stbrp_pack_rects (&atlas->context, &rect, 1);
+
+  if (rect.was_packed)
+    {
+      *out_x = rect.x;
+      *out_y = rect.y;
+    }
+
+  return rect.was_packed;
+}
+
 static void
 gsk_gl_texture_library_constructed (GObject *object)
 {
@@ -52,6 +192,7 @@ gsk_gl_texture_library_dispose (GObject *object)
 {
  GskGLTextureLibrary *self = (GskGLTextureLibrary *)object;

+  g_clear_pointer (&self->atlases, g_ptr_array_unref);
  g_clear_object (&self->driver);

  G_OBJECT_CLASS (gsk_gl_texture_library_parent_class)->dispose (object);
@@ -105,6 +246,9 @@ gsk_gl_texture_library_class_init (GskGLTextureLibraryClass *klass)
  object_class->get_property = gsk_gl_texture_library_get_property;
  object_class->set_property = gsk_gl_texture_library_set_property;

+  klass->compact = gsk_gl_texture_library_real_compact;
+  klass->allocate = gsk_gl_texture_library_real_allocate;
+
  properties [PROP_DRIVER] =
    g_param_spec_object ("driver",
                         "Driver",
@@ -118,6 +262,10 @@ gsk_gl_texture_library_class_init (GskGLTextureLibraryClass *klass)
 static void
 gsk_gl_texture_library_init (GskGLTextureLibrary *self)
 {
+  self->max_frame_age = DEFAULT_MAX_FRAME_AGE;
+  self->atlas_width = DEFAULT_ATLAS_WIDTH;
+  self->atlas_height = DEFAULT_ATLAS_HEIGHT;
+  self->atlases = g_ptr_array_new_with_free_func ((GDestroyNotify)gsk_gl_texture_atlas_free);
 }

 void
@@ -136,78 +284,14 @@ gsk_gl_texture_library_set_funcs (GskGLTextureLibrary *self,

 void
 gsk_gl_texture_library_begin_frame (GskGLTextureLibrary *self,
-                                    gint64               frame_id,
-                                    GPtrArray            *removed_atlases)
+                                    gint64               frame_id)
 {
-  GHashTableIter iter;
-
  g_return_if_fail (GSK_IS_GL_TEXTURE_LIBRARY (self));

+  gsk_gl_texture_library_compact (self, frame_id);
+
  if (GSK_GL_TEXTURE_LIBRARY_GET_CLASS (self)->begin_frame)
-    GSK_GL_TEXTURE_LIBRARY_GET_CLASS (self)->begin_frame (self, frame_id, removed_atlases);
-
-  if (removed_atlases != NULL)
-    {
-      GskGLTextureAtlasEntry *entry;
-      guint dropped = 0;
-
-      g_hash_table_iter_init (&iter, self->hash_table);
-      while (g_hash_table_iter_next (&iter, NULL, (gpointer *)&entry))
-        {
-          if (entry->is_atlased)
-            {
-              for (guint i = 0; i < removed_atlases->len; i++)
-                {
-                  GskGLTextureAtlas *atlas = g_ptr_array_index (removed_atlases, i);
-
-                  if (atlas == entry->atlas)
-                    {
-                      g_hash_table_iter_remove (&iter);
-                      dropped++;
-                      break;
-                    }
-                }
-            }
-        }
-
-      GSK_NOTE (GLYPH_CACHE,
-                if (dropped > 0)
-                  g_message ("%s: Dropped %d items",
-                             G_OBJECT_TYPE_NAME (self), dropped));
-    }
-
-  if (frame_id % MAX_FRAME_AGE == 0)
-    {
-      GskGLTextureAtlasEntry *entry;
-      int atlased = 0;
-      int dropped = 0;
-
-      g_hash_table_iter_init (&iter, self->hash_table);
-      while (g_hash_table_iter_next (&iter, NULL, (gpointer *)&entry))
-        {
-          if (!entry->is_atlased && !entry->accessed)
-            {
-              gsk_gl_driver_release_texture (self->driver, entry->texture);
-              g_hash_table_iter_remove (&iter);
-              dropped++;
-              continue;
-            }
-
-          gsk_gl_texture_atlas_entry_mark_unused (entry);
-          entry->accessed = FALSE;
-          if (entry->is_atlased)
-            atlased++;
-        }
-
-      GSK_NOTE (GLYPH_CACHE, g_message ("%s: Dropped %d individual items",
-                                        G_OBJECT_TYPE_NAME (self),
-                                        dropped);
-                             g_message ("%s: %d items cached (%d atlased, %d individually)",
-                                        G_OBJECT_TYPE_NAME (self),
-                                        g_hash_table_size (self->hash_table),
-                                        atlased,
-                                        g_hash_table_size (self->hash_table) - atlased));
-    }
+    GSK_GL_TEXTURE_LIBRARY_GET_CLASS (self)->begin_frame (self, frame_id);
 }

 static GskGLTexture *
@@ -234,90 +318,29 @@ gsk_gl_texture_library_pack_one (GskGLTextureLibrary *self,
  return texture;
 }

-static inline gboolean
-gsk_gl_texture_atlas_pack (GskGLTextureAtlas *self,
-                           int                width,
-                           int                height,
-                           int               *out_x,
-                           int               *out_y)
-{
-  stbrp_rect rect;
-
-  rect.w = width;
-  rect.h = height;
-
-  stbrp_pack_rects (&self->context, &rect, 1);
-
-  if (rect.was_packed)
-    {
-      *out_x = rect.x;
-      *out_y = rect.y;
-    }
-
-  return rect.was_packed;
-}
-
 static void
-gsk_gl_texture_atlas_initialize (GskGLDriver       *driver,
-                                 GskGLTextureAtlas *atlas)
-{
-  /* Insert a single pixel at 0,0 for use in coloring */
-
-  gboolean packed G_GNUC_UNUSED;
-  int x, y;
-  guint gl_format;
-  guint gl_type;
-  guint8 pixel_data[4 * 3 * 3];
-
-  gdk_gl_context_push_debug_group_printf (gdk_gl_context_get_current (),
-                                          "Initializing Atlas");
-
-  packed = gsk_gl_texture_atlas_pack (atlas, 3, 3, &x, &y);
-  g_assert (packed);
-  g_assert (x == 0 && y == 0);
-
-  memset (pixel_data, 255, sizeof pixel_data);
-
-  if (gdk_gl_context_get_use_es (gdk_gl_context_get_current ()))
-    {
-      gl_format = GL_RGBA;
-      gl_type = GL_UNSIGNED_BYTE;
-    }
-  else
-    {
-      gl_format = GL_BGRA;
-      gl_type = GL_UNSIGNED_INT_8_8_8_8_REV;
-    }
-
-  glBindTexture (GL_TEXTURE_2D, atlas->texture_id);
-
-  glTexSubImage2D (GL_TEXTURE_2D, 0,
-                   0, 0,
-                   3, 3,
-                   gl_format, gl_type,
-                   pixel_data);
-
-  gdk_gl_context_pop_debug_group (gdk_gl_context_get_current ());
-
-  driver->command_queue->n_uploads++;
-}
-
-static void
-gsk_gl_texture_atlases_pack (GskGLDriver        *driver,
-                             int                 width,
-                             int                 height,
-                             GskGLTextureAtlas **out_atlas,
-                             int                *out_x,
-                             int                *out_y)
+gsk_gl_texture_library_pack_any_atlas (GskGLTextureLibrary  *self,
+                                       int                   width,
+                                       int                   height,
+                                       GskGLTextureAtlas   **out_atlas,
+                                       int                  *out_x,
+                                       int                  *out_y)
 {
  GskGLTextureAtlas *atlas = NULL;
  int x, y;

-  for (guint i = 0; i < driver->atlases->len; i++)
-    {
-      atlas = g_ptr_array_index (driver->atlases, i);
+  g_assert (GSK_IS_GL_TEXTURE_LIBRARY (self));
+  g_assert (width > 0);
+  g_assert (height > 0);
+  g_assert (out_atlas != NULL);
+  g_assert (out_x != NULL);
+  g_assert (out_y != NULL);

-      if (gsk_gl_texture_atlas_pack (atlas, width, height, &x, &y))
+  for (guint i = 0; i < self->atlases->len; i++)
+    {
+      atlas = g_ptr_array_index (self->atlases, i);
+
+      if (gsk_gl_texture_library_allocate (self, atlas, width, height, &x, &y))
        break;

      atlas = NULL;
@@ -326,12 +349,10 @@ gsk_gl_texture_atlases_pack (GskGLDriver        *driver,
  if (atlas == NULL)
    {
      /* No atlas has enough space, so create a new one... */
-      atlas = gsk_gl_driver_create_atlas (driver);
-
-      gsk_gl_texture_atlas_initialize (driver, atlas);
+      atlas = gsk_gl_texture_library_acquire_atlas (self);

      /* Pack it onto that one, which surely has enough space... */
-      if (!gsk_gl_texture_atlas_pack (atlas, width, height, &x, &y))
+      if (!gsk_gl_texture_library_allocate (self, atlas, width, height, &x, &y))
        g_assert_not_reached ();
    }

@@ -380,17 +401,19 @@ gsk_gl_texture_library_pack (GskGLTextureLibrary *self,
      *out_packed_x = 0;
      *out_packed_y = 0;
    }
-  else if (width <= self->max_entry_size && height <= self->max_entry_size)
+  else if (self->max_entry_size == 0 ||
+           (width <= self->max_entry_size &&
+            height <= self->max_entry_size))
    {
      int packed_x;
      int packed_y;

-      gsk_gl_texture_atlases_pack (self->driver,
-                                   padding + width + padding,
-                                   padding + height + padding,
-                                   &atlas,
-                                   &packed_x,
-                                   &packed_y);
+      gsk_gl_texture_library_pack_any_atlas (self,
+                                             padding + width + padding,
+                                             padding + height + padding,
+                                             &atlas,
+                                             &packed_x,
+                                             &packed_y);

      entry->atlas = atlas;
      entry->is_atlased = TRUE;
@@ -424,3 +447,134 @@ gsk_gl_texture_library_pack (GskGLTextureLibrary *self,

  return entry;
 }
+
+/*
+ * gsk_gl_texture_library_clear_cache:
+ *
+ * Clear the front cache if the texture library is using one. For
+ * example the glyph cache would drop it's front cache to force
+ * next lookups to fall through to the GHashTable key lookup.
+ */
+void
+gsk_gl_texture_library_clear_cache (GskGLTextureLibrary *self)
+{
+  g_return_if_fail (GSK_IS_GL_TEXTURE_LIBRARY (self));
+
+  if (GSK_GL_TEXTURE_LIBRARY_GET_CLASS (self)->clear_cache)
+    GSK_GL_TEXTURE_LIBRARY_GET_CLASS (self)->clear_cache (self);
+}
+
+/*
+ * gsk_gl_texture_library_compact:
+ *
+ * Requests that the texture library compact it's altases. That
+ * generally means to traverse them to look for unused pixels over
+ * a certain threshold and release them if necessary.
+ *
+ * Returns: %TRUE if any compaction occurred.
+ */
+gboolean
+gsk_gl_texture_library_compact (GskGLTextureLibrary *self,
+                                gint64               frame_id)
+{
+  g_return_val_if_fail (GSK_IS_GL_TEXTURE_LIBRARY (self), FALSE);
+
+  if (GSK_GL_TEXTURE_LIBRARY_GET_CLASS (self)->compact)
+    return GSK_GL_TEXTURE_LIBRARY_GET_CLASS (self)->compact (self, frame_id);
+
+  return FALSE;
+}
+
+void
+gsk_gl_texture_library_reset (GskGLTextureLibrary *self)
+{
+  g_return_if_fail (GSK_IS_GL_TEXTURE_LIBRARY (self));
+
+  gsk_gl_texture_library_clear_cache (self);
+
+  g_hash_table_remove_all (self->hash_table);
+
+  if (self->atlases->len)
+    g_ptr_array_remove_range (self->atlases, 0, self->atlases->len);
+}
+
+void
+gsk_gl_texture_library_set_atlas_size (GskGLTextureLibrary *self,
+                                       int                  width,
+                                       int                  height)
+{
+  g_return_if_fail (GSK_IS_GL_TEXTURE_LIBRARY (self));
+
+  if (width <= 0)
+    width = DEFAULT_ATLAS_WIDTH;
+
+  if (height <= 0)
+    height = DEFAULT_ATLAS_HEIGHT;
+
+  self->atlas_height = height;
+  self->atlas_width = width;
+
+  gsk_gl_texture_library_reset (self);
+}
+
+/*
+ * gsk_gl_texture_library_acquire_atlas:
+ *
+ * Allocates a new texture atlas based on the current size
+ * and format requirements.
+ */
+GskGLTextureAtlas *
+gsk_gl_texture_library_acquire_atlas (GskGLTextureLibrary *self)
+{
+  GskGLTextureAtlas *atlas;
+
+  g_return_val_if_fail (GSK_IS_GL_TEXTURE_LIBRARY (self), NULL);
+  g_return_val_if_fail (GSK_IS_GL_DRIVER (self->driver), NULL);
+  g_return_val_if_fail (GSK_IS_GL_COMMAND_QUEUE (self->driver->command_queue), NULL);
+  g_return_val_if_fail (self->atlas_width > 0, NULL);
+  g_return_val_if_fail (self->atlas_height > 0, NULL);
+
+  atlas = g_slice_new0 (GskGLTextureAtlas);
+  atlas->width = self->atlas_width;
+  atlas->height = self->atlas_height;
+  /* TODO: We might want to change the strategy about the amount of
+   *       nodes here? stb_rect_pack.h says width is optimal. */
+  atlas->nodes = g_malloc0_n (atlas->width, sizeof (struct stbrp_node));
+  stbrp_init_target (&atlas->context, atlas->width, atlas->height, atlas->nodes, atlas->width);
+  atlas->texture_id = gsk_gl_command_queue_create_texture (self->driver->command_queue,
+                                                           atlas->width,
+                                                           atlas->height,
+                                                           GL_RGBA8,
+                                                           GL_LINEAR,
+                                                           GL_LINEAR);
+
+  gdk_gl_context_label_object_printf (gdk_gl_context_get_current (),
+                                      GL_TEXTURE, atlas->texture_id,
+                                      "Texture atlas %d",
+                                      atlas->texture_id);
+
+  g_ptr_array_add (self->atlases, atlas);
+
+  if (GSK_GL_TEXTURE_LIBRARY_GET_CLASS (self)->init_atlas)
+    GSK_GL_TEXTURE_LIBRARY_GET_CLASS (self)->init_atlas (self, atlas);
+
+  return atlas;
+}
+
+gboolean
+gsk_gl_texture_library_allocate (GskGLTextureLibrary *self,
+                                 GskGLTextureAtlas   *atlas,
+                                 int                  width,
+                                 int                  height,
+                                 int                 *out_x,
+                                 int                 *out_y)
+{
+  g_assert (GSK_IS_GL_TEXTURE_LIBRARY (self));
+  g_assert (atlas != NULL);
+  g_assert (width > 0);
+  g_assert (height > 0);
+  g_assert (out_x != NULL);
+  g_assert (out_y != NULL);
+
+  return GSK_GL_TEXTURE_LIBRARY_GET_CLASS (self)->allocate (self, atlas, width, height, out_x, out_y);
+}
@@ -37,9 +37,14 @@ G_BEGIN_DECLS

 typedef struct _GskGLTextureAtlas
 {
+  /* Used by Glyph/Icons */
  struct stbrp_context context;
  struct stbrp_node *nodes;

+  /* Used by Glyphy */
+  int cursor_x;
+  int cursor_y;
+
  int width;
  int height;

@@ -49,8 +54,6 @@ typedef struct _GskGLTextureAtlas
   * But are now unused.
   */
  int unused_pixels;
-
-  void *user_data;
 } GskGLTextureAtlas;

 typedef struct _GskGLTextureAtlasEntry
@@ -89,40 +92,67 @@ typedef struct _GskGLTextureAtlasEntry

 typedef struct _GskGLTextureLibrary
 {
-  GObject        parent_instance;
+  GObject      parent_instance;
  GskGLDriver *driver;
-  GHashTable    *hash_table;
-  guint          max_entry_size;
+  GPtrArray   *atlases;
+  GHashTable  *hash_table;
+  guint        max_entry_size;
+  guint        max_frame_age;
+  guint        atlas_width;
+  guint        atlas_height;
 } GskGLTextureLibrary;

 typedef struct _GskGLTextureLibraryClass
 {
  GObjectClass parent_class;

-  void (*begin_frame) (GskGLTextureLibrary *library,
-                       gint64               frame_id,
-                       GPtrArray           *removed_atlases);
+  void     (*begin_frame) (GskGLTextureLibrary *library,
+                           gint64               frame_id);
+  gboolean (*compact)     (GskGLTextureLibrary *library,
+                           gint64               frame_id);
+  void     (*clear_cache) (GskGLTextureLibrary *library);
+  void     (*init_atlas)  (GskGLTextureLibrary *library,
+                           GskGLTextureAtlas   *atlas);
+  gboolean (*allocate)    (GskGLTextureLibrary *library,
+                           GskGLTextureAtlas   *atlas,
+                           int                  width,
+                           int                  height,
+                           int                 *out_x,
+                           int                 *out_y);
 } GskGLTextureLibraryClass;

 G_DEFINE_AUTOPTR_CLEANUP_FUNC (GskGLTextureLibrary, g_object_unref)

-GType    gsk_gl_texture_library_get_type    (void) G_GNUC_CONST;
-void     gsk_gl_texture_library_set_funcs   (GskGLTextureLibrary *self,
-                                             GHashFunc            hash_func,
-                                             GEqualFunc           equal_func,
-                                             GDestroyNotify       key_destroy,
-                                             GDestroyNotify       value_destroy);
-void     gsk_gl_texture_library_begin_frame (GskGLTextureLibrary *self,
-                                             gint64               frame_id,
-                                             GPtrArray           *removed_atlases);
-gpointer gsk_gl_texture_library_pack        (GskGLTextureLibrary *self,
-                                             gpointer             key,
-                                             gsize                valuelen,
-                                             guint                width,
-                                             guint                height,
-                                             int                  padding,
-                                             guint               *out_packed_x,
-                                             guint               *out_packed_y);
+GType              gsk_gl_texture_library_get_type       (void) G_GNUC_CONST;
+gboolean           gsk_gl_texture_library_compact        (GskGLTextureLibrary *self,
+                                                          gint64               frame_id);
+void               gsk_gl_texture_library_clear_cache    (GskGLTextureLibrary *self);
+void               gsk_gl_texture_library_reset          (GskGLTextureLibrary *self);
+void               gsk_gl_texture_library_set_atlas_size (GskGLTextureLibrary *self,
+                                                          int                  width,
+                                                          int                  height);
+GskGLTextureAtlas *gsk_gl_texture_library_acquire_atlas  (GskGLTextureLibrary *self);
+void               gsk_gl_texture_library_set_funcs      (GskGLTextureLibrary *self,
+                                                          GHashFunc            hash_func,
+                                                          GEqualFunc           equal_func,
+                                                          GDestroyNotify       key_destroy,
+                                                          GDestroyNotify       value_destroy);
+void               gsk_gl_texture_library_begin_frame    (GskGLTextureLibrary *self,
+                                                          gint64               frame_id);
+gboolean           gsk_gl_texture_library_allocate       (GskGLTextureLibrary *self,
+                                                          GskGLTextureAtlas   *atlas,
+                                                          int                  width,
+                                                          int                  height,
+                                                          int                 *out_x,
+                                                          int                 *out_y);
+gpointer           gsk_gl_texture_library_pack           (GskGLTextureLibrary *self,
+                                                          gpointer             key,
+                                                          gsize                valuelen,
+                                                          guint                width,
+                                                          guint                height,
+                                                          int                  padding,
+                                                          guint               *out_packed_x,
+                                                          guint               *out_packed_y);

 static inline void
 gsk_gl_texture_atlas_mark_unused (GskGLTextureAtlas *self,
@@ -37,6 +37,7 @@ typedef struct _GskGLCompiler GskGLCompiler;
 typedef struct _GskGLDrawVertex GskGLDrawVertex;
 typedef struct _GskGLRenderTarget GskGLRenderTarget;
 typedef struct _GskGLGlyphLibrary GskGLGlyphLibrary;
+typedef struct _GskGLGlyphyLibrary GskGLGlyphyLibrary;
 typedef struct _GskGLIconLibrary GskGLIconLibrary;
 typedef struct _GskGLProgram GskGLProgram;
 typedef struct _GskGLRenderJob GskGLRenderJob;
@@ -3,7 +3,7 @@

 uniform vec4 u_geometry;

-_NOPERSPECTIVE_ _OUT_ vec2 coord;
+_OUT_ vec2 coord;

 void main() {
  gl_Position = u_projection * (u_modelview * vec4(aPosition, 0.0, 1.0));
@@ -29,7 +29,7 @@ uniform highp int u_num_color_stops; // Why? Because it works like this.
 uniform vec4 u_geometry;
 uniform float u_color_stops[MAX_COLOR_STOPS * 5];

-_NOPERSPECTIVE_ _IN_ vec2 coord;
+_IN_ vec2 coord;

 float get_offset(int index) {
  // u_color_stops[5 * index] makes Intel Windows driver crash.
@@ -0,0 +1,15 @@
+uniform ivec4 u_atlas_info;
+
+#define GLYPHY_TEXTURE1D_EXTRA_DECLS , sampler2D _tex, ivec4 _atlas_info, ivec2 _atlas_pos
+#define GLYPHY_TEXTURE1D_EXTRA_ARGS , _tex, _atlas_info, _atlas_pos
+#define GLYPHY_DEMO_EXTRA_ARGS , u_source, u_atlas_info, gi.atlas_pos
+
+vec4
+glyphy_texture1D_func (int offset GLYPHY_TEXTURE1D_EXTRA_DECLS)
+{
+  ivec2 item_geom = _atlas_info.zw;
+  vec2 pos = (vec2 (_atlas_pos.xy * item_geom +
+		   ivec2 (mod (float (offset), float (item_geom.x)), offset / item_geom.x)) +
+	      + vec2 (.5, .5)) / vec2(_atlas_info.xy);
+  return GskTexture (_tex, pos);
+}
@@ -0,0 +1,62 @@
+// FRAGMENT_SHADER:
+// glyphy.fs.glsl
+
+uniform float u_contrast;
+uniform float u_gamma_adjust;
+uniform float u_outline_thickness;
+uniform bool  u_outline;
+uniform float u_boldness;
+
+_IN_ vec4 v_glyph;
+_IN_ vec4 final_color;
+
+#define SQRT2     1.4142135623730951
+#define SQRT2_INV 0.70710678118654757 /* 1 / sqrt(2.) */
+
+struct glyph_info_t {
+  ivec2 nominal_size;
+  ivec2 atlas_pos;
+};
+
+glyph_info_t
+glyph_info_decode (vec4 v)
+{
+  glyph_info_t gi;
+  gi.nominal_size = (ivec2 (mod (v.zw, 256.)) + 2) / 4;
+  gi.atlas_pos = ivec2 (v_glyph.zw) / 256;
+  return gi;
+}
+
+float
+antialias (float d)
+{
+  return smoothstep (-.75, +.75, d);
+}
+
+void
+main()
+{
+  vec2 p = v_glyph.xy;
+  glyph_info_t gi = glyph_info_decode (v_glyph);
+
+  /* isotropic antialiasing */
+  vec2 dpdx = dFdx (p);
+  vec2 dpdy = dFdy (p);
+  float m = length (vec2 (length (dpdx), length (dpdy))) * SQRT2_INV;
+
+  float gsdist = glyphy_sdf (p, gi.nominal_size GLYPHY_DEMO_EXTRA_ARGS);
+  gsdist -= u_boldness;
+  float sdist = gsdist / m * u_contrast;
+
+  if (u_outline)
+    sdist = abs (sdist) - u_outline_thickness * .5;
+
+  if (sdist > 1.)
+    discard;
+
+  float alpha = antialias (-sdist);
+  if (u_gamma_adjust != 1.)
+    alpha = pow (alpha, 1./u_gamma_adjust);
+
+  gskSetOutputColor(final_color * alpha);
+}
@@ -0,0 +1,24 @@
+// VERTEX_SHADER:
+// glyphy.vs.glsl
+
+_OUT_ vec4 v_glyph;
+_OUT_ vec4 final_color;
+
+vec4
+glyph_vertex_transcode (vec2 v)
+{
+  ivec2 g = ivec2 (v);
+  ivec2 corner = ivec2 (mod (v, 2.));
+  g /= 2;
+  ivec2 nominal_size = ivec2 (mod (vec2(g), 64.));
+  return vec4 (corner * nominal_size, g * 4);
+}
+
+void
+main()
+{
+  v_glyph = glyph_vertex_transcode(aUv);
+  vUv = v_glyph.zw;
+  gl_Position = u_projection * u_modelview * vec4(aPosition, 0.0, 1.0);
+  final_color = gsk_scaled_premultiply(aColor, u_alpha);
+}
@@ -2,7 +2,7 @@
 // linear_gradient.glsl
 uniform vec4 u_points;

-_NOPERSPECTIVE_ _OUT_ vec4 info;
+_OUT_ vec4 info;

 void main() {
  gl_Position = u_projection * (u_modelview * vec4(aPosition, 0.0, 1.0));
@@ -53,7 +53,7 @@ uniform highp int u_num_color_stops; // Why? Because it works like this.
 uniform float u_color_stops[MAX_COLOR_STOPS * 5];
 uniform bool u_repeat;

-_NOPERSPECTIVE_ _IN_ vec4 info;
+_IN_ vec4 info;

 float get_offset(int index) {
  // u_color_stops[5 * index] makes Intel Windows driver crash.
@@ -5,12 +5,10 @@ precision highp float;
 #if defined(GSK_GLES) || defined(GSK_LEGACY)
 #define _OUT_ varying
 #define _IN_ varying
-#define _NOPERSPECTIVE_
 #define _GSK_ROUNDED_RECT_UNIFORM_ vec4[3]
 #else
 #define _OUT_ out
 #define _IN_ in
-#define _NOPERSPECTIVE_ noperspective
 #define _GSK_ROUNDED_RECT_UNIFORM_ GskRoundedRect
 #endif

@@ -3,7 +3,7 @@

 uniform vec4 u_geometry;

-_NOPERSPECTIVE_ _OUT_ vec2 coord;
+_OUT_ vec2 coord;

 void main() {
  gl_Position = u_projection * (u_modelview * vec4(aPosition, 0.0, 1.0));
@@ -32,7 +32,7 @@ uniform bool u_repeat;
 uniform vec2 u_range;
 uniform float u_color_stops[MAX_COLOR_STOPS * 5];

-_NOPERSPECTIVE_ _IN_ vec2 coord;
+_IN_ vec2 coord;

 float get_offset(int index) {
  // u_color_stops[5 * index] makes Intel Windows driver crash.
@@ -22,6 +22,8 @@

 #ifndef __GI_SCANNER__

+G_DEFINE_AUTOPTR_CLEANUP_FUNC(GskPath, gsk_path_unref)
+G_DEFINE_AUTOPTR_CLEANUP_FUNC(GskPathMeasure, gsk_path_measure_unref)
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GskRenderer, g_object_unref)
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GskRenderNode, gsk_render_node_unref)
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GskTransform, gsk_transform_unref)
@@ -21,11 +21,15 @@
 #define __GSK_H_INSIDE__

 #include <gsk/gskenums.h>
+#include <gsk/gskglshader.h>
+#include <gsk/gskpath.h>
+#include <gsk/gskpathbuilder.h>
+#include <gsk/gskpathmeasure.h>
 #include <gsk/gskrenderer.h>
 #include <gsk/gskrendernode.h>
 #include <gsk/gskroundedrect.h>
+#include <gsk/gskstroke.h>
 #include <gsk/gsktransform.h>
-#include <gsk/gskglshader.h>

 #include <gsk/gskcairorenderer.h>

@@ -0,0 +1,80 @@
+#include "config.h"
+
+#include "gskboundingboxprivate.h"
+
+GskBoundingBox *
+gsk_bounding_box_init (GskBoundingBox         *self,
+                       const graphene_point_t *a,
+                       const graphene_point_t *b)
+{
+  self->min.x = MIN (a->x, b->x);
+  self->min.y = MIN (a->y, b->y);
+  self->max.x = MAX (a->x, b->x);
+  self->max.y = MAX (a->y, b->y);
+  return self;
+}
+
+GskBoundingBox *
+gsk_bounding_box_init_copy (GskBoundingBox       *self,
+                            const GskBoundingBox *src)
+{
+  self->min = src->min;
+  self->max = src->max;
+  return self;
+}
+
+GskBoundingBox *
+gsk_bounding_box_init_from_rect (GskBoundingBox        *self,
+                                 const graphene_rect_t *bounds)
+{
+  self->min = bounds->origin;
+  self->max.x = bounds->origin.x + bounds->size.width;
+  self->max.y = bounds->origin.y + bounds->size.height;
+  return self;
+}
+
+void
+gsk_bounding_box_expand (GskBoundingBox         *self,
+                         const graphene_point_t *p)
+{
+  self->min.x = MIN (self->min.x, p->x);
+  self->min.y = MIN (self->min.y, p->y);
+  self->max.x = MAX (self->max.x, p->x);
+  self->max.y = MAX (self->max.y, p->y);
+}
+
+graphene_rect_t *
+gsk_bounding_box_to_rect (const GskBoundingBox  *self,
+                          graphene_rect_t       *rect)
+{
+  rect->origin = self->min;
+  rect->size.width = self->max.x - self->min.x;
+  rect->size.height = self->max.y - self->min.y;
+  return rect;
+}
+
+gboolean
+gsk_bounding_box_contains_point (const GskBoundingBox     *self,
+                                 const graphene_point_t *p)
+{
+  return self->min.x <= p->x && p->x <= self->max.x &&
+         self->min.y <= p->y && p->y <= self->max.y;
+}
+
+gboolean
+gsk_bounding_box_intersection (const GskBoundingBox *a,
+                               const GskBoundingBox *b,
+                               GskBoundingBox       *res)
+{
+  graphene_point_t min, max;
+
+  min.x = MAX (a->min.x, b->min.x);
+  min.y = MAX (a->min.y, b->min.y);
+  max.x = MIN (a->max.x, b->max.x);
+  max.y = MIN (a->max.y, b->max.y);
+
+  if (res)
+    gsk_bounding_box_init (res, &min, &max);
+
+  return min.x <= max.x && min.y <= max.y;
+}
@@ -0,0 +1,44 @@
+#pragma once
+
+#include <gsk/gsktypes.h>
+
+G_BEGIN_DECLS
+
+typedef struct _GskBoundingBox GskBoundingBox;
+
+struct _GskBoundingBox {
+  graphene_point_t min;
+  graphene_point_t max;
+};
+
+GDK_AVAILABLE_IN_ALL
+GskBoundingBox * gsk_bounding_box_init (GskBoundingBox         *self,
+                                        const graphene_point_t *a,
+                                        const graphene_point_t *b);
+
+GDK_AVAILABLE_IN_ALL
+GskBoundingBox * gsk_bounding_box_init_copy (GskBoundingBox       *self,
+                                             const GskBoundingBox *src);
+
+GDK_AVAILABLE_IN_ALL
+GskBoundingBox * gsk_bounding_box_init_from_rect (GskBoundingBox        *self,
+                                                  const graphene_rect_t *bounds);
+
+GDK_AVAILABLE_IN_ALL
+void             gsk_bounding_box_expand (GskBoundingBox         *self,
+                                          const graphene_point_t *p);
+
+GDK_AVAILABLE_IN_ALL
+graphene_rect_t *gsk_bounding_box_to_rect        (const GskBoundingBox  *self,
+                                                  graphene_rect_t       *rect);
+
+GDK_AVAILABLE_IN_ALL
+gboolean         gsk_bounding_box_contains_point (const GskBoundingBox   *self,
+                                                  const graphene_point_t *p);
+
+GDK_AVAILABLE_IN_ALL
+gboolean         gsk_bounding_box_intersection (const GskBoundingBox *a,
+                                                const GskBoundingBox *b,
+                                                GskBoundingBox       *res);
+
+G_END_DECLS
@@ -0,0 +1,132 @@
+/*
+ * Copyright © 2020 Benjamin Otte
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Benjamin Otte <otte@gnome.org>
+ */
+
+
+#ifndef __GSK_CONTOUR_PRIVATE_H__
+#define __GSK_CONTOUR_PRIVATE_H__
+
+#include <gskpath.h>
+
+#include "gskpathopprivate.h"
+
+G_BEGIN_DECLS
+
+/* A path is flat if it contains no cubic or conic segments.
+ * A path is closed if all its contours end with a GSK_PATH_CLOSE
+ * operation.
+ */
+typedef enum
+{
+  GSK_PATH_FLAT,
+  GSK_PATH_CLOSED
+} GskPathFlags;
+
+typedef struct _GskContour GskContour;
+
+GskContour *            gsk_rect_contour_new                    (const graphene_rect_t  *rect);
+GskContour *            gsk_circle_contour_new                  (const graphene_point_t *center,
+                                                                 float                   radius,
+                                                                 float                   start_angle,
+                                                                 float                   end_angle);
+GskContour *            gsk_standard_contour_new                (GskPathFlags            flags,
+                                                                 const graphene_point_t *points,
+                                                                 gsize                   n_points,
+                                                                 const gskpathop        *ops,
+                                                                 gsize                   n_ops,
+                                                                 gssize                  offset);
+
+void                    gsk_contour_copy                        (GskContour *            dest,
+                                                                 const GskContour       *src);
+GskContour *            gsk_contour_dup                         (const GskContour       *src);
+
+GskContour *            gsk_contour_reverse                     (const GskContour       *src);
+
+gsize                   gsk_contour_get_size                    (const GskContour       *self);
+GskPathFlags            gsk_contour_get_flags                   (const GskContour       *self);
+void                    gsk_contour_print                       (const GskContour       *self,
+                                                                 GString                *string);
+gboolean                gsk_contour_get_bounds                  (const GskContour       *self,
+                                                                 graphene_rect_t        *bounds);
+gpointer                gsk_contour_init_measure                (const GskContour       *self,
+                                                                 float                   tolerance,
+                                                                 float                  *out_length);
+void                    gsk_contour_free_measure                (const GskContour       *self,
+                                                                 gpointer                data);
+gboolean                gsk_contour_foreach                     (const GskContour       *self,
+                                                                 float                   tolerance,
+                                                                 GskPathForeachFunc      func,
+                                                                 gpointer                user_data);
+void                    gsk_contour_get_start_end               (const GskContour       *self,
+                                                                 graphene_point_t       *start,
+                                                                 graphene_point_t       *end);
+void                    gsk_contour_get_point                   (const GskContour       *self,
+                                                                 gpointer                measure_data,
+                                                                 float                   distance,
+                                                                 graphene_point_t       *pos,
+                                                                 graphene_vec2_t        *tangent);
+float                   gsk_contour_get_curvature               (const GskContour       *self,
+                                                                 gpointer                measure_data,
+                                                                 float                   distance,
+                                                                 graphene_point_t       *center);
+gboolean                gsk_contour_get_closest_point           (const GskContour       *self,
+                                                                 gpointer                measure_data,
+                                                                 float                   tolerance,
+                                                                 const graphene_point_t *point,
+                                                                 float                   threshold,
+                                                                 float                  *out_distance,
+                                                                 graphene_point_t       *out_pos,
+                                                                 float                  *out_offset,
+                                                                 graphene_vec2_t        *out_tangent);
+int                     gsk_contour_get_winding                 (const GskContour       *self,
+                                                                 gpointer                measure_data,
+                                                                 const graphene_point_t *point,
+                                                                 gboolean               *on_edge);
+void                    gsk_contour_add_segment                 (const GskContour       *self,
+                                                                 GskPathBuilder         *builder,
+                                                                 gpointer                measure_data,
+                                                                 gboolean                emit_move_to,
+                                                                 float                   start,
+                                                                 float                   end);
+gboolean                gsk_contour_get_stroke_bounds           (const GskContour       *self,
+                                                                 const GskStroke        *stroke,
+                                                                 graphene_rect_t        *bounds);
+void                    gsk_contour_add_stroke                  (const GskContour       *contour,
+                                                                 GskPathBuilder         *builder,
+                                                                 GskStroke              *stroke);
+void                    gsk_contour_default_add_stroke          (const GskContour       *contour,
+                                                                 GskPathBuilder         *builder,
+                                                                 GskStroke              *stroke);
+
+void                    gsk_contour_offset                      (const GskContour       *contour,
+                                                                 GskPathBuilder         *builder,
+                                                                 float                   distance,
+                                                                 GskLineJoin             line_join,
+                                                                 float                   miter_limit);
+void                    gsk_contour_default_offset              (const GskContour       *contour,
+                                                                 GskPathBuilder         *builder,
+                                                                 float                   distance,
+                                                                 GskLineJoin             line_join,
+                                                                 float                   miter_limit);
+
+gboolean                gsk_contour_is_convex                   (const GskContour       *contour);
+
+G_END_DECLS
+
+#endif /* __GSK_CONTOUR_PRIVATE_H__ */
+
@@ -0,0 +1,286 @@
+#include "config.h"
+
+#include "gskconvexityprivate.h"
+#include "gskcontourprivate.h"
+
+typedef enum
+{
+  GSK_DIR_CHANGE_UNKNOWN,
+  GSK_DIR_CHANGE_LEFT,
+  GSK_DIR_CHANGE_RIGHT,
+  GSK_DIR_CHANGE_STRAIGHT,
+  GSK_DIR_CHANGE_REVERSE,
+  GSK_DIR_CHANGE_INVALID,
+} GskDirChange;
+
+typedef enum
+{
+  GSK_PATH_DIRECTION_UNKNOWN,
+  GSK_PATH_DIRECTION_CLOCKWISE,
+  GSK_PATH_DIRECTION_COUNTERCLOCKWISE,
+} GskPathDirection;
+
+typedef struct _GskConvexityChecker GskConvexityChecker;
+struct _GskConvexityChecker
+{
+  graphene_point_t first_point;
+  graphene_vec2_t first_vec;
+  graphene_point_t last_point;
+  graphene_vec2_t last_vec;
+  GskDirChange expected_direction;
+  GskPathDirection first_direction;
+  int reversals;
+  gboolean finite;
+  GskConvexity convexity;
+  int xsign;
+  int ysign;
+  int dx;
+  int dy;
+};
+
+static float
+cross_product (graphene_vec2_t *a,
+               graphene_vec2_t *b)
+{
+  float fa[2];
+  float fb[2];
+  graphene_vec2_to_float (a, fa);
+  graphene_vec2_to_float (b, fb);
+  return fa[0] * fb[1] - fa[1] * fb[0];
+}
+
+static GskDirChange
+direction_change (GskConvexityChecker    *c,
+                  graphene_vec2_t *v)
+{
+  float cross = cross_product (&(c->last_vec), v);
+  if (!finite (cross))
+    return GSK_DIR_CHANGE_UNKNOWN;
+
+  if (cross == 0)
+    return graphene_vec2_dot (&(c->last_vec), v) < 0
+           ? GSK_DIR_CHANGE_REVERSE
+           : GSK_DIR_CHANGE_STRAIGHT;
+
+  return cross > 0
+         ? GSK_DIR_CHANGE_RIGHT
+         : GSK_DIR_CHANGE_LEFT;
+}
+
+static gboolean
+add_vec (GskConvexityChecker *c,
+         graphene_vec2_t     *v)
+{
+  GskDirChange dir;
+  int sign;
+
+  dir = direction_change (c, v);
+  switch (dir)
+    {
+    case GSK_DIR_CHANGE_LEFT:
+    case GSK_DIR_CHANGE_RIGHT:
+      if (c->expected_direction == GSK_DIR_CHANGE_INVALID)
+        {
+          c->expected_direction = dir;
+          c->first_direction = (dir == GSK_DIR_CHANGE_RIGHT)
+                               ? GSK_PATH_DIRECTION_CLOCKWISE
+                               : GSK_PATH_DIRECTION_COUNTERCLOCKWISE;
+        }
+      else if (c->expected_direction != dir)
+        {
+          c->first_direction = GSK_PATH_DIRECTION_UNKNOWN;
+          c->convexity = GSK_CONVEXITY_CONCAVE;
+          return FALSE;
+        }
+      graphene_vec2_init_from_vec2 (&c->last_vec, v);
+      break;
+
+    case GSK_DIR_CHANGE_STRAIGHT:
+      break;
+
+    case GSK_DIR_CHANGE_REVERSE:
+      graphene_vec2_init_from_vec2 (&c->last_vec, v);
+      c->reversals++;
+      if (c->reversals > 2)
+        c->convexity = GSK_CONVEXITY_CONCAVE;
+      return c->reversals < 3;
+
+    case GSK_DIR_CHANGE_UNKNOWN:
+      c->finite = FALSE;
+      return FALSE;
+
+    case GSK_DIR_CHANGE_INVALID:
+    default:
+      g_assert_not_reached ();
+    }
+
+  if (graphene_vec2_get_x (v) > 0)
+    sign = 1;
+  else if (graphene_vec2_get_x (v) < 0)
+    sign = -1;
+  else
+    sign = 0;
+
+  if (sign != 0)
+    {
+      if (c->xsign != 42)
+        {
+          if (c->xsign != sign)
+            c->dx++;
+
+          if (c->dx > 2)
+            {
+              c->convexity = GSK_CONVEXITY_CONCAVE;
+              return FALSE;
+            }
+        }
+      c->xsign = sign;
+    }
+
+  if (graphene_vec2_get_y (v) > 0)
+    sign = 1;
+  else if (graphene_vec2_get_y (v) < 0)
+    sign = -1;
+  else
+    sign = 0;
+
+  if (sign != 0)
+    {
+      if (c->ysign != 42)
+        {
+          if (c->ysign != sign)
+            c->dy++;
+
+          if (c->dy > 2)
+            {
+              c->convexity = GSK_CONVEXITY_CONCAVE;
+              return FALSE;
+            }
+        }
+      c->ysign = sign;
+    }
+
+  return TRUE;
+}
+
+static void
+gsk_convexity_checker_init (GskConvexityChecker *c)
+{
+  c->first_point = GRAPHENE_POINT_INIT(0,0);
+  c->last_point = GRAPHENE_POINT_INIT(0,0);
+  graphene_vec2_init (&c->first_vec, 0, 0);
+  graphene_vec2_init (&c->last_vec, 0, 0);
+  c->expected_direction = GSK_DIR_CHANGE_INVALID;
+  c->first_direction = GSK_PATH_DIRECTION_UNKNOWN;
+  c->reversals = 0;
+  c->finite = TRUE;
+  c->convexity = GSK_CONVEXITY_UNKNOWN;
+  c->xsign = 42;
+  c->ysign = 42;
+  c->dx = 0;
+  c->dy = 0;
+}
+
+static void
+gsk_convexity_checker_move (GskConvexityChecker    *c,
+                            const graphene_point_t *p)
+{
+  c->first_point = c->last_point = *p;
+  c->expected_direction = GSK_DIR_CHANGE_INVALID;
+  c->convexity = GSK_CONVEXITY_CONVEX;
+}
+
+static gboolean
+gsk_convexity_checker_add_point (GskConvexityChecker    *c,
+                                 const graphene_point_t *p)
+{
+  graphene_vec2_t v;
+
+  if (graphene_point_equal (&c->last_point, p))
+    return TRUE;
+
+  graphene_vec2_init (&v,
+                      p->x - c->last_point.x,
+                      p->y - c->last_point.y);
+
+  if (graphene_point_equal (&c->first_point, &c->last_point) &&
+      c->expected_direction == GSK_DIR_CHANGE_INVALID)
+    {
+      graphene_vec2_init_from_vec2 (&c->last_vec, &v);
+      graphene_vec2_init_from_vec2 (&c->first_vec, &v);
+    }
+  else if (!add_vec (c, &v))
+    {
+      c->convexity = GSK_CONVEXITY_CONCAVE;
+      return FALSE;
+    }
+
+  c->last_point = *p;
+  return TRUE;
+}
+
+static gboolean
+gsk_convexity_checker_close (GskConvexityChecker *c)
+{
+  if (!(gsk_convexity_checker_add_point (c, &c->first_point) &&
+        add_vec (c, &c->first_vec)))
+    {
+      c->convexity = GSK_CONVEXITY_CONCAVE;
+      return FALSE;
+    }
+
+  return TRUE;
+}
+
+static gboolean
+convex_cb (GskPathOperation        op,
+           const graphene_point_t *pts,
+           gsize                   n_pts,
+           float                   weight,
+           gpointer                user_data)
+{
+  GskConvexityChecker *c = user_data;
+
+  switch (op)
+    {
+    case GSK_PATH_MOVE:
+      gsk_convexity_checker_move (c, &pts[0]);
+      break;
+    case GSK_PATH_CLOSE:
+      if (!gsk_convexity_checker_close (c))
+        return FALSE;
+      break;
+    case GSK_PATH_LINE:
+      if (!gsk_convexity_checker_add_point (c, &pts[1]))
+        return FALSE;
+      break;
+    case GSK_PATH_CURVE:
+      if (!gsk_convexity_checker_add_point (c, &pts[1]) ||
+          !gsk_convexity_checker_add_point (c, &pts[2]) ||
+          !gsk_convexity_checker_add_point (c, &pts[3]))
+        return FALSE;
+      break;
+    case GSK_PATH_CONIC:
+      if (!gsk_convexity_checker_add_point (c, &pts[1]) ||
+          !gsk_convexity_checker_add_point (c, &pts[3]))
+        return FALSE;
+      break;
+    default:
+      g_assert_not_reached ();
+    }
+
+  return TRUE;
+}
+
+GskConvexity
+gsk_contour_compute_convexity (const GskContour *contour)
+{
+  GskConvexityChecker c;
+
+  gsk_convexity_checker_init (&c);
+  gsk_contour_foreach (contour, 0.001, convex_cb, &c);
+
+  g_assert (c.convexity != GSK_CONVEXITY_UNKNOWN);
+
+  return c.convexity;
+}
@@ -0,0 +1,14 @@
+#pragma once
+
+#include "gskcontourprivate.h"
+
+typedef enum
+{
+  GSK_CONVEXITY_UNKNOWN,
+  GSK_CONVEXITY_CONVEX,
+  GSK_CONVEXITY_CONCAVE,
+} GskConvexity;
+
+GskConvexity gsk_contour_compute_convexity (const GskContour *contour);
+
+
@@ -0,0 +1,621 @@
+/*
+ * Copyright © 2020 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Matthias Clasen <mclasen@redhat.com>
+ */
+
+#include "config.h"
+
+#include "gskcurveprivate.h"
+
+static inline gboolean
+acceptable (float t)
+{
+  return 0 - FLT_EPSILON <= t && t <= 1 + FLT_EPSILON;
+}
+
+
+static int
+line_intersect (const GskCurve   *curve1,
+                const GskCurve   *curve2,
+                float            *t1,
+                float            *t2,
+                graphene_point_t *p,
+                int               n)
+{
+  const graphene_point_t *pts1 = curve1->line.points;
+  const graphene_point_t *pts2 = curve2->line.points;
+  float a1 = pts1[0].x - pts1[1].x;
+  float b1 = pts1[0].y - pts1[1].y;
+  float a2 = pts2[0].x - pts2[1].x;
+  float b2 = pts2[0].y - pts2[1].y;
+  float det = a1 * b2 - b1 * a2;
+
+  if (fabs(det) > 0.01)
+    {
+      float tt =   ((pts1[0].x - pts2[0].x) * b2 - (pts1[0].y - pts2[0].y) * a2) / det;
+      float ss = - ((pts1[0].y - pts2[0].y) * a1 - (pts1[0].x - pts2[0].x) * b1) / det;
+
+      if (acceptable (tt) && acceptable (ss))
+        {
+          p[0].x = pts1[0].x + tt * (pts1[1].x - pts1[0].x);
+          p[0].y = pts1[0].y + tt * (pts1[1].y - pts1[0].y);
+
+          t1[0] = tt;
+          t2[0] = ss;
+
+          return 1;
+        }
+    }
+  else /* parallel lines */
+    {
+      float r = a1 * (pts1[1].y - pts2[0].y) - (pts1[1].x - pts2[0].x) * b1;
+      float dist = (r * r) / (a1 * a1 + b1 * b1);
+      float t, s, tt, ss;
+
+      if (dist > 0.01)
+        return 0;
+
+      if (pts1[1].x != pts1[0].x)
+        {
+          t = (pts2[0].x - pts1[0].x) / (pts1[1].x - pts1[0].x);
+          s = (pts2[1].x - pts1[0].x) / (pts1[1].x - pts1[0].x);
+        }
+      else
+        {
+          t = (pts2[0].y - pts1[0].y) / (pts1[1].y - pts1[0].y);
+          s = (pts2[1].y - pts1[0].y) / (pts1[1].y - pts1[0].y);
+        }
+
+      if ((t < 0 && s < 0) || (t > 1 && s > 1))
+        return 0;
+
+      if (acceptable (t))
+        {
+          t1[0] = t;
+          t2[0] = 0;
+          p[0] = pts2[0];
+        }
+      else if (t < 0)
+        {
+          if (pts2[1].x != pts2[0].x)
+            tt = (pts1[0].x - pts2[0].x) / (pts2[1].x - pts2[0].x);
+          else
+            tt = (pts1[0].y - pts2[0].y) / (pts2[1].y - pts2[0].y);
+
+          t1[0] = 0;
+          t2[0] = tt;
+          p[0] = pts1[0];
+        }
+      else
+        {
+          if (pts2[1].x != pts2[0].x)
+            tt = (pts1[1].x - pts2[0].x) / (pts2[1].x - pts2[0].x);
+          else
+            tt = (pts1[1].y - pts2[0].y) / (pts2[1].y - pts2[0].y);
+
+          t1[0] = 1;
+          t2[0] = tt;
+          p[0] = pts1[1];
+        }
+
+      if (acceptable (s))
+        {
+          if (t2[0] == 1)
+            return 1;
+
+          t1[1] = s;
+          t2[1] = 1;
+          p[1] = pts2[1];
+        }
+      else if (s < 0)
+        {
+          if (t1[0] == 0)
+            return 1;
+
+          if (pts2[1].x != pts2[0].x)
+            ss = (pts1[0].x - pts2[0].x) / (pts2[1].x - pts2[0].x);
+          else
+            ss = (pts1[0].y - pts2[0].y) / (pts2[1].y - pts2[0].y);
+
+          t1[1] = 0;
+          t2[1] = ss;
+          p[1] = pts1[0];
+        }
+      else
+        {
+          if (t1[0] == 1)
+            return 1;
+
+          if (pts2[1].x != pts2[0].x)
+            ss = (pts1[1].x - pts2[0].x) / (pts2[1].x - pts2[0].x);
+          else
+            ss = (pts1[1].y - pts2[0].y) / (pts2[1].y - pts2[0].y);
+
+          t1[1] = 1;
+          t2[1] = ss;
+          p[1] = pts1[1];
+        }
+
+      return 2;
+    }
+
+  return 0;
+}
+
+static void
+get_tangent (const graphene_point_t *p0,
+             const graphene_point_t *p1,
+             graphene_vec2_t        *t)
+{
+  graphene_vec2_init (t, p1->x - p0->x, p1->y - p0->y);
+  graphene_vec2_normalize (t, t);
+}
+
+static void
+align_points (const graphene_point_t *p,
+              const graphene_point_t *a,
+              const graphene_point_t *b,
+              graphene_point_t       *q,
+              int                     n)
+{
+  graphene_vec2_t n1;
+  float angle;
+  float s, c;
+  float dist;
+
+  get_tangent (a, b, &n1);
+  angle = - atan2 (graphene_vec2_get_y (&n1), graphene_vec2_get_x (&n1));
+  sincosf (angle, &s, &c);
+
+  dist = sqrtf ((a->x - b->x)*(a->x - b->x) + (a->y - b->y)*(a->y - b->y));
+
+  for (int i = 0; i < n; i++)
+    {
+      q[i].x = ((p[i].x - a->x) * c - (p[i].y - a->y) * s) / dist;
+      q[i].y = ((p[i].x - a->x) * s + (p[i].y - a->y) * c) / dist;
+    }
+}
+
+static void
+find_point_on_line (const graphene_point_t *p1,
+                    const graphene_point_t *p2,
+                    const graphene_point_t *q,
+                    float                  *t)
+{
+  if (p2->x != p1->x)
+    *t = (q->x - p1->x) / (p2->x - p1->x);
+  else
+    *t = (q->y - p1->y) / (p2->y - p1->y);
+}
+
+static float
+cuberoot (float v)
+{
+  if (v < 0)
+    return -pow (-v, 1.f / 3);
+  return pow (v, 1.f / 3);
+}
+
+/* Solve P = 0 where P is
+ * P = (1-t)^3*pa + 3*t*(1-t)^2*pb + 3*t^2*(1-t)*pc + t^3*pd
+ */
+static int
+get_cubic_roots (float pa, float pb, float pc, float pd, float roots[3])
+{
+  float a, b, c, d;
+  float q, q2;
+  float p, p3;
+  float discriminant;
+  float u1, v1, sd;
+  int n_roots = 0;
+
+  d = -pa + 3*pb - 3*pc + pd;
+  a = 3*pa - 6*pb + 3*pc;
+  b = -3*pa + 3*pb;
+  c = pa;
+
+  if (fabs (d) < 0.0001)
+    {
+      if (fabs (a) < 0.0001)
+        {
+          if (fabs (b) < 0.0001)
+            return 0;
+
+          if (acceptable (-c / b))
+            {
+              roots[0] = -c / b;
+
+              return 1;
+            }
+
+          return 0;
+        }
+      q = sqrt (b*b - 4*a*c);
+      roots[n_roots] = (-b + q) / (2 * a);
+      if (acceptable (roots[n_roots]))
+        n_roots++;
+
+      roots[n_roots] = (-b - q) / (2 * a);
+      if (acceptable (roots[n_roots]))
+        n_roots++;
+
+      return n_roots;
+    }
+
+  a /= d;
+  b /= d;
+  c /= d;
+
+  p = (3*b - a*a)/3;
+  p3 = p/3;
+  q = (2*a*a*a - 9*a*b + 27*c)/27;
+  q2 = q/2;
+  discriminant = q2*q2 + p3*p3*p3;
+
+  if (discriminant < 0)
+    {
+      float mp3 = -p/3;
+      float mp33 = mp3*mp3*mp3;
+      float r = sqrt (mp33);
+      float t = -q / (2*r);
+      float cosphi = t < -1 ? -1 : (t > 1 ? 1 : t);
+      float phi = acos (cosphi);
+      float crtr = cuberoot (r);
+      float t1 = 2*crtr;
+
+      roots[n_roots] = t1 * cos (phi/3) - a/3;
+      if (acceptable (roots[n_roots]))
+        n_roots++;
+      roots[n_roots] = t1 * cos ((phi + 2*M_PI) / 3) - a/3;
+      if (acceptable (roots[n_roots]))
+        n_roots++;
+      roots[n_roots] = t1 * cos ((phi + 4*M_PI) / 3) - a/3;
+      if (acceptable (roots[n_roots]))
+        n_roots++;
+
+    return n_roots;
+  }
+
+  if (discriminant == 0)
+    {
+      u1 = q2 < 0 ? cuberoot (-q2) : -cuberoot (q2);
+      roots[n_roots] = 2*u1 - a/3;
+      if (acceptable (roots[n_roots]))
+        n_roots++;
+      roots[n_roots] = -u1 - a/3;
+      if (acceptable (roots[n_roots]))
+        n_roots++;
+
+      return n_roots;
+    }
+
+  sd = sqrt (discriminant);
+  u1 = cuberoot (sd - q2);
+  v1 = cuberoot (sd + q2);
+  roots[n_roots] = u1 - v1 - a/3;
+  if (acceptable (roots[n_roots]))
+    n_roots++;
+
+  return n_roots;
+}
+
+static int
+line_curve_intersect (const GskCurve   *curve1,
+                      const GskCurve   *curve2,
+                      float            *t1,
+                      float            *t2,
+                      graphene_point_t *p,
+                      int               n)
+{
+  const graphene_point_t *a = &curve1->line.points[0];
+  const graphene_point_t *b = &curve1->line.points[1];
+  graphene_point_t pts[4];
+  float t[3];
+  int m, i, j;
+
+  /* Rotate things to place curve1 on the x axis,
+   * then solve curve2 for y == 0.
+   */
+  align_points (curve2->curve.points, a, b, pts, 4);
+
+  m = get_cubic_roots (pts[0].y, pts[1].y, pts[2].y, pts[3].y, t);
+
+  j = 0;
+  for (i = 0; i < m; i++)
+    {
+      t2[j] = t[i];
+      gsk_curve_get_point (curve2, t2[j], &p[j]);
+      find_point_on_line (a, b, &p[j], &t1[j]);
+      if (acceptable (t1[j]))
+        j++;
+      if (j == n)
+        break;
+    }
+
+  return j;
+}
+
+static void
+curve_intersect_recurse (const GskCurve   *curve1,
+                         const GskCurve   *curve2,
+                         float             t1l,
+                         float             t1r,
+                         float             t2l,
+                         float             t2r,
+                         float            *t1,
+                         float            *t2,
+                         graphene_point_t *p,
+                         int               n,
+                         int              *pos,
+                         float             tolerance)
+{
+  GskCurve p11, p12, p21, p22;
+  GskBoundingBox b1, b2;
+  float d1, d2;
+
+  if (*pos == n)
+    return;
+
+  gsk_curve_get_tight_bounds (curve1, &b1);
+  gsk_curve_get_tight_bounds (curve2, &b2);
+
+  if (!gsk_bounding_box_intersection (&b1, &b2, NULL))
+    return;
+
+  d1 = (t1r - t1l) / 2;
+  d2 = (t2r - t2l) / 2;
+
+  if (b1.max.x - b1.min.x < tolerance && b1.max.y - b1.min.y < tolerance &&
+      b2.max.x - b2.min.x < tolerance && b2.max.y - b2.min.y < tolerance)
+    {
+      graphene_point_t c;
+      t1[*pos] = t1l + d1;
+      t2[*pos] = t2l + d2;
+      gsk_curve_get_point (curve1, 0.5, &c);
+
+      for (int i = 0; i < *pos; i++)
+        {
+          if (graphene_point_near (&c, &p[i], 0.1))
+            return;
+        }
+
+      p[*pos] = c;
+      (*pos)++;
+
+      return;
+    }
+
+  gsk_curve_split (curve1, 0.5, &p11, &p12);
+  gsk_curve_split (curve2, 0.5, &p21, &p22);
+
+  curve_intersect_recurse (&p11, &p21, t1l,      t1l + d1, t2l,      t2l + d2, t1, t2, p, n, pos, tolerance);
+  curve_intersect_recurse (&p11, &p22, t1l,      t1l + d1, t2l + d2, t2r,      t1, t2, p, n, pos, tolerance);
+  curve_intersect_recurse (&p12, &p21, t1l + d1, t1r,      t2l,      t2l + d2, t1, t2, p, n, pos, tolerance);
+  curve_intersect_recurse (&p12, &p22, t1l + d1, t1r,      t2l + d2, t2r,      t1, t2, p, n, pos, tolerance);
+}
+
+static int
+curve_intersect (const GskCurve   *curve1,
+                 const GskCurve   *curve2,
+                 float            *t1,
+                 float            *t2,
+                 graphene_point_t *p,
+                 int               n,
+                 float             tolerance)
+{
+  int pos = 0;
+
+  curve_intersect_recurse (curve1, curve2, 0, 1, 0, 1, t1, t2, p, n, &pos, tolerance);
+
+  return pos;
+}
+
+static void
+get_bounds (const GskCurve  *curve,
+            float            tl,
+            float            tr,
+            GskBoundingBox  *bounds)
+{
+  GskCurve c;
+
+  gsk_curve_segment (curve, tl, tr, &c);
+  gsk_curve_get_tight_bounds (&c, bounds);
+}
+
+static void
+general_intersect_recurse (const GskCurve   *curve1,
+                           const GskCurve   *curve2,
+                           float             t1l,
+                           float             t1r,
+                           float             t2l,
+                           float             t2r,
+                           float            *t1,
+                           float            *t2,
+                           graphene_point_t *p,
+                           int               n,
+                           int              *pos,
+                           float             tolerance)
+{
+  GskBoundingBox b1, b2;
+  float d1, d2;
+
+  if (*pos == n)
+    return;
+
+  get_bounds (curve1, t1l, t1r, &b1);
+  get_bounds (curve2, t2l, t2r, &b2);
+
+  if (!gsk_bounding_box_intersection (&b1, &b2, NULL))
+    return;
+
+  d1 = (t1r - t1l) / 2;
+  d2 = (t2r - t2l) / 2;
+
+  if (b1.max.x - b1.min.x < tolerance && b1.max.y - b1.min.y < tolerance &&
+      b2.max.x - b2.min.x < tolerance && b2.max.y - b2.min.y < tolerance)
+    {
+      graphene_point_t c;
+      t1[*pos] = t1l + d1;
+      t2[*pos] = t2l + d2;
+      gsk_curve_get_point (curve1, t1[*pos], &c);
+
+      for (int i = 0; i < *pos; i++)
+        {
+          if (graphene_point_near (&c, &p[i], tolerance))
+            return;
+        }
+
+      p[*pos] = c;
+      (*pos)++;
+
+      return;
+    }
+
+  /* Note that in the conic case, we cannot just split the curves and
+   * pass the two halves down, since splitting changes the parametrization,
+   * and we need the t's to be valid parameters wrt to the original curve.
+   *
+   * So, instead, we determine the bounding boxes above by always starting
+   * from the original curve. That is a bit less efficient, but also works
+   * for conics.
+   */
+  general_intersect_recurse (curve1, curve2, t1l,      t1l + d1, t2l,      t2l + d2, t1, t2, p, n, pos, tolerance);
+  general_intersect_recurse (curve1, curve2, t1l,      t1l + d1, t2l + d2, t2r,      t1, t2, p, n, pos, tolerance);
+  general_intersect_recurse (curve1, curve2, t1l + d1, t1r,      t2l,      t2l + d2, t1, t2, p, n, pos, tolerance);
+  general_intersect_recurse (curve1, curve2, t1l + d1, t1r,      t2l + d2, t2r,      t1, t2, p, n, pos, tolerance);
+}
+
+static int
+general_intersect (const GskCurve   *curve1,
+                   const GskCurve   *curve2,
+                   float            *t1,
+                   float            *t2,
+                   graphene_point_t *p,
+                   int               n,
+                   float             tolerance)
+{
+  int pos = 0;
+
+  general_intersect_recurse (curve1, curve2, 0, 1, 0, 1, t1, t2, p, n, &pos, tolerance);
+
+  return pos;
+}
+
+static int
+curve_self_intersect (const GskCurve   *curve,
+                      float            *t1,
+                      float            *t2,
+                      graphene_point_t *p,
+                      int               n)
+{
+  float tt[3], ss[3], s;
+  graphene_point_t pp[3];
+  int m;
+  GskCurve cs, ce;
+
+  if (curve->op != GSK_PATH_CURVE)
+    return 0;
+
+  s = 0.5;
+  m = gsk_curve_get_curvature_points (curve, tt);
+  for (int i = 0; i < m; i++)
+    {
+      if (gsk_curve_get_curvature (curve, tt[i], NULL) == 0)
+        {
+          s = tt[i];
+          break;
+        }
+    }
+
+  gsk_curve_split (curve, s, &cs, &ce);
+
+  m = curve_intersect (&cs, &ce, tt, ss, pp, 3, 0.001);
+
+  if (m > 1)
+    {
+      /* One of the (at most 2) intersections we found
+       * must be the common point where we split the curve.
+       * It will have a t value of 1 and an s value of 0.
+       */
+      if (fabs (tt[0] - 1) > 1e-3)
+        {
+          t1[0] = t2[0] = tt[0] * s;
+          p[0] = pp[0];
+        }
+      else if (fabs (tt[1] - 1) > 1e-3)
+        {
+          t1[0] = t2[0] = tt[1] * s;
+          p[0] = pp[1];
+        }
+      if (fabs (ss[0]) > 1e-3)
+        {
+          t1[1] = t2[1] = s + ss[0] * (1 - s);
+          p[1] = pp[0];
+        }
+      else if (fabs (ss[1]) > 1e-3)
+        {
+          t1[1] = t2[1] = s + ss[1] * (1 - s);
+          p[1] = pp[1];
+        }
+
+      return 2;
+    }
+
+  return 0;
+}
+
+/* Place intersections between the curves in p, and their Bezier positions
+ * in t1 and t2, up to n. Return the number of intersections found.
+ *
+ * Note that two cubic Beziers can have up to 9 intersections.
+ */
+int
+gsk_curve_intersect (const GskCurve   *curve1,
+                     const GskCurve   *curve2,
+                     float            *t1,
+                     float            *t2,
+                     graphene_point_t *p,
+                     int               n)
+{
+  GskPathOperation op1 = curve1->op;
+  GskPathOperation op2 = curve2->op;
+
+  if (op1 == GSK_PATH_CLOSE)
+    op1 = GSK_PATH_LINE;
+
+  if (op2 == GSK_PATH_CLOSE)
+    op2 = GSK_PATH_LINE;
+
+  if (memcmp (curve1, curve2, sizeof (GskCurve)) == 0)
+    return curve_self_intersect (curve1, t1, t2, p, n);
+
+  /* We special-case line-line and line-curve intersections,
+   * since we can solve them directly.
+   * Everything else is done via bisection.
+   */
+  if (op1 == GSK_PATH_LINE && op2 == GSK_PATH_LINE)
+    return line_intersect (curve1, curve2, t1, t2, p, n);
+  else if (op1 == GSK_PATH_LINE && op2 == GSK_PATH_CURVE)
+    return line_curve_intersect (curve1, curve2, t1, t2, p, n);
+  else if (op1 == GSK_PATH_CURVE && op2 == GSK_PATH_LINE)
+    return line_curve_intersect (curve2, curve1, t2, t1, p, n);
+  else if (op1 == GSK_PATH_CURVE && op2 == GSK_PATH_CURVE)
+    return curve_intersect (curve1, curve2, t1, t2, p, n, 0.001);
+  else
+    return general_intersect (curve1, curve2, t1, t2, p, n, 0.001);
+
+}
@@ -0,0 +1,164 @@
+/*
+ * Copyright © 2020 Benjamin Otte
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Benjamin Otte <otte@gnome.org>
+ */
+
+
+#ifndef __GSK_CURVE_PRIVATE_H__
+#define __GSK_CURVE_PRIVATE_H__
+
+#include "gskpathopprivate.h"
+#include "gskboundingboxprivate.h"
+
+G_BEGIN_DECLS
+
+typedef gpointer gskpathop;
+
+typedef union _GskCurve GskCurve;
+
+typedef struct _GskLineCurve GskLineCurve;
+typedef struct _GskCurveCurve GskCurveCurve;
+typedef struct _GskConicCurve GskConicCurve;
+
+struct _GskLineCurve
+{
+  GskPathOperation op;
+
+  gboolean padding;
+
+  graphene_point_t points[2];
+};
+
+struct _GskCurveCurve
+{
+  GskPathOperation op;
+
+  gboolean has_coefficients;
+
+  graphene_point_t points[4];
+
+  graphene_point_t coeffs[4];
+};
+
+struct _GskConicCurve
+{
+  GskPathOperation op;
+
+  gboolean has_coefficients;
+
+  /* points[0], points[1], points[3] are the control points,
+   * points[2].x is the weight
+   */
+  graphene_point_t points[4];
+
+  graphene_point_t num[3];
+  graphene_point_t denom[3];
+};
+
+union _GskCurve
+{
+  GskPathOperation op;
+  GskLineCurve line;
+  GskCurveCurve curve;
+  GskConicCurve conic;
+};
+
+typedef gboolean (* GskCurveAddLineFunc) (const graphene_point_t *from,
+                                          const graphene_point_t *to,
+                                          float                   from_progress,
+                                          float                   to_progress,
+                                          gpointer                user_data);
+
+typedef gboolean (* GskCurveAddCurveFunc) (const graphene_point_t points[4],
+                                           gpointer                user_data);
+
+void                    gsk_curve_init                          (GskCurve               *curve,
+                                                                 gskpathop               op);
+void                    gsk_curve_init_foreach                  (GskCurve               *curve,
+                                                                 GskPathOperation        op,
+                                                                 const graphene_point_t *pts,
+                                                                 gsize                   n_pts,
+                                                                 float                   weight);
+
+void                    gsk_curve_get_point                     (const GskCurve         *curve,
+                                                                 float                   progress,
+                                                                 graphene_point_t       *pos);
+void                    gsk_curve_get_tangent                   (const GskCurve         *curve,
+                                                                 float                   progress,
+                                                                 graphene_vec2_t        *tangent);
+void                    gsk_curve_get_normal                    (const GskCurve         *curve,
+                                                                 float                   progress,
+                                                                 graphene_vec2_t        *normal);
+void                    gsk_curve_split                         (const GskCurve         *curve,
+                                                                 float                   progress,
+                                                                 GskCurve               *start,
+                                                                 GskCurve               *end);
+void                    gsk_curve_segment                       (const GskCurve         *curve,
+                                                                 float                   start,
+                                                                 float                   end,
+                                                                 GskCurve               *segment);
+gboolean                gsk_curve_decompose                     (const GskCurve         *curve,
+                                                                 float                   tolerance,
+                                                                 GskCurveAddLineFunc     add_line_func,
+                                                                 gpointer                user_data);
+gboolean                gsk_curve_decompose_curve               (const GskCurve         *curve,
+                                                                 float                   tolerance,
+                                                                 GskCurveAddCurveFunc    add_curve_func,
+                                                                 gpointer                user_data);
+gskpathop               gsk_curve_pathop                        (const GskCurve         *curve);
+#define gsk_curve_builder_to(curve, builder) gsk_path_builder_pathop_to ((builder), gsk_curve_pathop (curve))
+const graphene_point_t *gsk_curve_get_start_point               (const GskCurve         *curve);
+const graphene_point_t *gsk_curve_get_end_point                 (const GskCurve         *curve);
+void                    gsk_curve_get_start_tangent             (const GskCurve         *curve,
+                                                                 graphene_vec2_t        *tangent);
+void                    gsk_curve_get_end_tangent               (const GskCurve         *curve,
+                                                                 graphene_vec2_t        *tangent);
+void                    gsk_curve_get_bounds                    (const GskCurve         *curve,
+                                                                 GskBoundingBox         *bounds);
+void                    gsk_curve_get_tight_bounds              (const GskCurve         *curve,
+                                                                 GskBoundingBox         *bounds);
+
+int                     gsk_curve_intersect                     (const GskCurve         *curve1,
+                                                                 const GskCurve         *curve2,
+                                                                 float                  *t1,
+                                                                 float                  *t2,
+                                                                 graphene_point_t       *p,
+                                                                 int                     n);
+
+void                    gsk_curve_offset                        (const GskCurve         *curve,
+                                                                 float                   distance,
+                                                                 GskCurve               *offset_curve);
+void                    gsk_curve_reverse                       (const GskCurve         *curve,
+                                                                 GskCurve               *reverse);
+
+float                   gsk_curve_get_curvature                 (const GskCurve         *curve,
+                                                                 float                   t,
+                                                                 graphene_point_t       *center);
+
+int                     gsk_curve_get_curvature_points          (const GskCurve         *curve,
+                                                                 float                   t[3]);
+
+int                     gsk_curve_get_cusps                     (const GskCurve         *curve,
+                                                                 float                   t[2]);
+
+void                    gsk_curve_print                         (const GskCurve         *curve);
+
+
+G_END_DECLS
+
+#endif /* __GSK_CURVE_PRIVATE_H__ */
+
@@ -10,6 +10,7 @@ static const GdkDebugKey gsk_debug_keys[] = {
  { "surface", GSK_DEBUG_SURFACE, "Information about surfaces" },
  { "fallback", GSK_DEBUG_FALLBACK, "Information about fallbacks" },
  { "glyphcache", GSK_DEBUG_GLYPH_CACHE, "Information about glyph caching" },
+  { "paths", GSK_DEBUG_PATHS, "Information about path processing" },
  { "geometry", GSK_DEBUG_GEOMETRY, "Show borders (when using cairo)" },
  { "full-redraw", GSK_DEBUG_FULL_REDRAW, "Force full redraws" },
  { "sync", GSK_DEBUG_SYNC, "Sync after each frame" },
@@ -14,6 +14,7 @@ typedef enum {
  GSK_DEBUG_VULKAN                = 1 <<  5,
  GSK_DEBUG_FALLBACK              = 1 <<  6,
  GSK_DEBUG_GLYPH_CACHE           = 1 <<  7,
+  GSK_DEBUG_PATHS                 = 1 <<  8,
  /* flags below may affect behavior */
  GSK_DEBUG_GEOMETRY              = 1 <<  9,
  GSK_DEBUG_FULL_REDRAW           = 1 << 10,
@@ -1,5 +1,5 @@
 /* GSK - The GTK Scene Kit
- * Copyright 2016  Endless 
+ * Copyright 2016  Endless
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
@@ -50,7 +50,7 @@
 * @GSK_BLUR_NODE: A node that applies a blur
 * @GSK_DEBUG_NODE: Debug information that does not affect the rendering
 * @GSK_GL_SHADER_NODE: A node that uses OpenGL fragment shaders to render
- 
+
 * The type of a node determines what the node is rendering.
 */
 typedef enum {
@@ -73,6 +73,8 @@ typedef enum {
  GSK_REPEAT_NODE,
  GSK_CLIP_NODE,
  GSK_ROUNDED_CLIP_NODE,
+  GSK_FILL_NODE,
+  GSK_STROKE_NODE,
  GSK_SHADOW_NODE,
  GSK_BLEND_NODE,
  GSK_CROSS_FADE_NODE,
@@ -167,6 +169,107 @@ typedef enum {
  GSK_CORNER_BOTTOM_LEFT
 } GskCorner;

+/**
+ * GskFillRule:
+ * @GSK_FILL_RULE_WINDING: If the path crosses the ray from
+ *   left-to-right, counts +1. If the path crosses the ray
+ *   from right to left, counts -1. (Left and right are determined
+ *   from the perspective of looking along the ray from the starting
+ *   point.) If the total count is non-zero, the point will be filled.
+ * @GSK_FILL_RULE_EVEN_ODD: Counts the total number of
+ *   intersections, without regard to the orientation of the contour. If
+ *   the total number of intersections is odd, the point will be
+ *   filled.
+ *
+ * #GskFillRule is used to select how paths are filled, for example in
+ * gsk_fill_node_new(). Whether or not a point is included in the fill is
+ * determined by taking a ray from that point to infinity and looking
+ * at intersections with the path. The ray can be in any direction,
+ * as long as it doesn't pass through the end point of a segment
+ * or have a tricky intersection such as intersecting tangent to the path.
+ * (Note that filling is not actually implemented in this way. This
+ * is just a description of the rule that is applied.)
+ *
+ * New entries may be added in future versions.
+ **/
+typedef enum {
+  GSK_FILL_RULE_WINDING,
+  GSK_FILL_RULE_EVEN_ODD
+} GskFillRule;
+
+/**
+ * GskLineCap:
+ * @GSK_LINE_CAP_BUTT: Start and stop the line exactly at the start
+ *   and end point
+ * @GSK_LINE_CAP_ROUND: Use a round ending, the center of the circle
+ *   is the start or end point.
+ * @GSK_LINE_CAP_SQUARE: use squared ending, the center of the square
+ *   is the start or end point.
+ *
+ * Specifies how to render the start and end points of contours or
+ * dashes when stroking.
+ *
+ * The default line cap style is @GSK_LINE_CAP_BUTT.
+ */
+typedef enum {
+  GSK_LINE_CAP_BUTT,
+  GSK_LINE_CAP_ROUND,
+  GSK_LINE_CAP_SQUARE
+} GskLineCap;
+
+/**
+ * GskLineJoin:
+ * @GSK_LINE_JOIN_MITER: Use a sharp, angled corner
+ * @GSK_LINE_JOIN_MITER_CLIP: Use a sharp, angled corner, at a distance
+ * @GSK_LINE_JOIN_ROUND: Use a round join, the center of the circle is
+ *   the joint point
+ * @GSK_LINE_JOIN_BEVEL: use a cut-off join, the join is cut off at half
+ *   the line width from the joint point
+ * @GSK_LINE_JOIN_ARCS: Use a sharp angled corner made from circles
+ *
+ * Specifies how to render the junction of two lines when stroking.
+ *
+ * See [method@Gsk.Stroke.set_miter_limit] for details on the difference
+ * between @GSK_LINE_JOIN_MITER and @GSK_LINE_JOIN_MITER_CLIP.
+ *
+ * The default line join style is @GSK_LINE_JOIN_MITER.
+ **/
+typedef enum {
+  GSK_LINE_JOIN_MITER,
+  GSK_LINE_JOIN_MITER_CLIP,
+  GSK_LINE_JOIN_ROUND,
+  GSK_LINE_JOIN_BEVEL,
+  GSK_LINE_JOIN_ARCS
+} GskLineJoin;
+
+/**
+ * GskPathOperation:
+ * @GSK_PATH_MOVE: A move-to operation, with 1 point describing the
+ *   target point.
+ * @GSK_PATH_LINE: A line-to operation, with 2 points describing the
+ *   start and end point of a straight line.
+ * @GSK_PATH_CLOSE: A close operation ending the current contour with
+ *   a line back to the starting point. Two points describe the start
+ *   and end of the line.
+ * @GSK_PATH_CURVE: A curve-to operation describing a cubic Bézier curve
+ *   with 4 points describing the start point, the two control points
+ *   and the end point of the curve.
+ * @GSK_PATH_CONIC: A weighted quadratic Bézier curve with 3 points
+ *   describing the start point, control point and end point of the
+ *   curve. A weight for the curve will be passed, too.
+ *
+ * Path operations can be used to approximate a #GskPath.
+ *
+ * More values may be added in the future.
+ **/
+typedef enum {
+  GSK_PATH_MOVE,
+  GSK_PATH_CLOSE,
+  GSK_PATH_LINE,
+  GSK_PATH_CURVE,
+  GSK_PATH_CONIC,
+} GskPathOperation;
+
 /**
 * GskSerializationError:
 * @GSK_SERIALIZATION_UNSUPPORTED_FORMAT: The format can not be identified
@@ -251,5 +354,4 @@ typedef enum
  GSK_GL_UNIFORM_TYPE_VEC4,
 } GskGLUniformType;

-
 #endif /* __GSK_TYPES_H__ */
@@ -0,0 +1,154 @@
+/*
+ * Copyright © 2020 Benjamin Otte
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Benjamin Otte <otte@gnome.org>
+ */
+
+#ifndef __GSK_PATH_H__
+#define __GSK_PATH_H__
+
+#if !defined (__GSK_H_INSIDE__) && !defined (GTK_COMPILATION)
+#error "Only <gsk/gsk.h> can be included directly."
+#endif
+
+
+#include <gsk/gsktypes.h>
+
+G_BEGIN_DECLS
+
+/**
+ * GskPathForeachFlags:
+ * @GSK_PATH_FOREACH_ALLOW_CURVE: Allow emission of `GSK_PATH_CURVE` operations.
+ * @GSK_PATH_FOREACH_ALLOW_CONIC: Allow emission of `GSK_PATH_CONIC` operations.
+ *
+ * Flags that can be passed to [method@Gsk.Path.foreach] to enable additional
+ * features.
+ *
+ * By default, [method@Gsk.Path.foreach] will only emit a path with all
+ * operations flattened to straight lines to allow for maximum compatibility.
+ * The only operations emitted will be `GSK_PATH_MOVE`, `GSK_PATH_LINE` and
+ * `GSK_PATH_CLOSE`.
+ */
+typedef enum
+{
+  GSK_PATH_FOREACH_ALLOW_CURVE = (1 << 0),
+  GSK_PATH_FOREACH_ALLOW_CONIC = (1 << 1)
+} GskPathForeachFlags;
+
+/**
+ * GskPathForeachFunc:
+ * @op: The operation to perform
+ * @pts: The points of the operation
+ * @n_pts: The number of points
+ * @weight: The weight for conic curves, or unused if not a conic curve.
+ * @user_data: The user data provided with the function
+ *
+ * Prototype of the callback to iterate throught the operations of
+ * a path.
+ *
+ * Returns: %TRUE to continue evaluating the path, %FALSE to
+ *   immediately abort and not call the function again.
+ */
+typedef gboolean (* GskPathForeachFunc) (GskPathOperation        op,
+                                         const graphene_point_t *pts,
+                                         gsize                   n_pts,
+                                         float                   weight,
+                                         gpointer                user_data);
+
+#define GSK_TYPE_PATH (gsk_path_get_type ())
+
+GDK_AVAILABLE_IN_ALL
+GType                   gsk_path_get_type                       (void) G_GNUC_CONST;
+GDK_AVAILABLE_IN_ALL
+GskPath *               gsk_path_new_from_cairo                 (const cairo_path_t     *path);
+
+GDK_AVAILABLE_IN_ALL
+GskPath *               gsk_path_ref                            (GskPath                *self);
+GDK_AVAILABLE_IN_ALL
+void                    gsk_path_unref                          (GskPath                *self);
+
+GDK_AVAILABLE_IN_ALL
+void                    gsk_path_print                          (GskPath                *self,
+                                                                 GString                *string);
+GDK_AVAILABLE_IN_ALL
+char *                  gsk_path_to_string                      (GskPath                *self);
+
+GDK_AVAILABLE_IN_ALL
+GskPath *               gsk_path_parse                          (const char             *string);
+
+GDK_AVAILABLE_IN_ALL
+void                    gsk_path_to_cairo                       (GskPath                *self,
+                                                                 cairo_t                *cr);
+
+GDK_AVAILABLE_IN_ALL
+gboolean                gsk_path_is_empty                       (GskPath                *self);
+GDK_AVAILABLE_IN_ALL
+gboolean                gsk_path_get_bounds                     (GskPath                *self,
+                                                                 graphene_rect_t        *bounds);
+GDK_AVAILABLE_IN_ALL
+gboolean                gsk_path_get_stroke_bounds              (GskPath                *path,
+                                                                 const GskStroke        *stroke,
+                                                                 graphene_rect_t        *bounds);
+
+GDK_AVAILABLE_IN_ALL
+gboolean                gsk_path_is_convex                      (GskPath                *self);
+
+GDK_AVAILABLE_IN_ALL
+gboolean                gsk_path_foreach                        (GskPath                *self,
+                                                                 GskPathForeachFlags     flags,
+                                                                 GskPathForeachFunc      func,
+                                                                 gpointer                user_data);
+
+GDK_AVAILABLE_IN_ALL
+GskPath *               gsk_path_reverse                        (GskPath                *self);
+
+GDK_AVAILABLE_IN_ALL
+GskPath *               gsk_path_transform                      (GskPath                *self,
+                                                                 GskTransform           *transform);
+
+GDK_AVAILABLE_IN_ALL
+GskPath *               gsk_path_stroke                         (GskPath                *self,
+                                                                 GskStroke              *stroke);
+
+GDK_AVAILABLE_IN_ALL
+GskPath *               gsk_path_offset                         (GskPath                *self,
+                                                                 float                   distance,
+                                                                 GskLineJoin             line_join,
+                                                                 float                   miter_limit);
+
+GDK_AVAILABLE_IN_ALL
+GskPath *               gsk_path_union                          (GskPath                *first,
+                                                                 GskPath                *second);
+
+GDK_AVAILABLE_IN_ALL
+GskPath *               gsk_path_intersection                   (GskPath                *first,
+                                                                 GskPath                *second);
+
+GDK_AVAILABLE_IN_ALL
+GskPath *               gsk_path_difference                     (GskPath                *first,
+                                                                 GskPath                *second);
+
+GDK_AVAILABLE_IN_ALL
+GskPath *               gsk_path_symmetric_difference           (GskPath                *first,
+                                                                 GskPath                *second);
+
+GDK_AVAILABLE_IN_ALL
+GskPath *               gsk_path_simplify                       (GskPath                *self);
+
+
+G_END_DECLS
+
+#endif /* __GSK_PATH_H__ */
@@ -0,0 +1,964 @@
+/*
+ * Copyright © 2020 Benjamin Otte
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Benjamin Otte <otte@gnome.org>
+ */
+
+#include "config.h"
+
+#include "gskpathbuilder.h"
+
+#include "gskpathprivate.h"
+
+/**
+ * GskPathBuilder:
+ *
+ * A `GskPathBuilder` is an auxiliary object that is used to
+ * create new `GskPath` objects.
+ *
+ * A path is constructed like this:
+ *
+ * ```
+ * GskPath *
+ * construct_path (void)
+ * {
+ *   GskPathBuilder *builder;
+ *
+ *   builder = gsk_path_builder_new ();
+ *
+ *   // add contours to the path here
+ *
+ *   return gsk_path_builder_free_to_path (builder);
+ * }
+ * ```
+ *
+ * Adding contours to the path can be done in two ways.
+ * The easiest option is to use the `gsk_path_builder_add_*` group
+ * of functions that add predefined contours to the current path,
+ * either common shapes like [method@Gsk.PathBuilder.add_circle]
+ * or by adding from other paths like [method@Gsk.PathBuilder.add_path].
+ *
+ * The other option is to define each line and curve manually with
+ * the `gsk_path_builder_*_to` group of functions. You start with
+ * a call to [method@Gsk.PathBuilder.move_to] to set the starting point
+ * and then use multiple calls to any of the drawing functions to
+ * move the pen along the plane. Once you are done, you can call
+ * [method@Gsk.PathBuilder.close] to close the path by connecting it
+ * back with a line to the starting point.
+ * This is similar for how paths are drawn in Cairo.
+ */
+
+struct _GskPathBuilder
+{
+  int ref_count;
+
+  GSList *contours; /* (reverse) list of already recorded contours */
+
+  GskPathFlags flags; /* flags for the current path */
+  graphene_point_t current_point; /* the point all drawing ops start from */
+  GArray *ops; /* operations for current contour - size == 0 means no current contour */
+  GArray *points; /* points for the operations */
+};
+
+G_DEFINE_BOXED_TYPE (GskPathBuilder,
+                     gsk_path_builder,
+                     gsk_path_builder_ref,
+                     gsk_path_builder_unref)
+
+
+/**
+ * gsk_path_builder_new:
+ *
+ * Create a new `GskPathBuilder` object. The resulting builder
+ * would create an empty `GskPath`. Use addition functions to add
+ * types to it.
+ *
+ * Returns: a new `GskPathBuilder`
+ **/
+GskPathBuilder *
+gsk_path_builder_new (void)
+{
+  GskPathBuilder *builder;
+
+  builder = g_slice_new0 (GskPathBuilder);
+  builder->ref_count = 1;
+
+  builder->ops = g_array_new (FALSE, FALSE, sizeof (gskpathop));
+  builder->points = g_array_new (FALSE, FALSE, sizeof (graphene_point_t));
+
+  /* Be explicit here */
+  builder->current_point = GRAPHENE_POINT_INIT (0, 0);
+
+  return builder;
+}
+
+/**
+ * gsk_path_builder_ref:
+ * @builder: a `GskPathBuilder`
+ *
+ * Acquires a reference on the given @builder.
+ *
+ * This function is intended primarily for bindings. `GskPathBuilder` objects
+ * should not be kept around.
+ *
+ * Returns: (transfer none): the given `GskPathBuilder` with
+ *   its reference count increased
+ */
+GskPathBuilder *
+gsk_path_builder_ref (GskPathBuilder *builder)
+{
+  g_return_val_if_fail (builder != NULL, NULL);
+  g_return_val_if_fail (builder->ref_count > 0, NULL);
+
+  builder->ref_count += 1;
+
+  return builder;
+}
+
+/* We're cheating here. Out pathops are relative to the NULL pointer,
+ * so that we can not care about the points GArray reallocating itself
+ * until we create the contour.
+ * This does however mean that we need to not use gsk_pathop_get_points()
+ * without offsetting the returned pointer.
+ */
+static inline gskpathop
+gsk_pathop_encode_index (GskPathOperation op,
+                         gsize            index)
+{
+  return gsk_pathop_encode (op, ((graphene_point_t *) NULL) + index);
+}
+
+static void
+gsk_path_builder_ensure_current (GskPathBuilder *builder)
+{
+  if (builder->ops->len != 0)
+    return;
+
+  builder->flags = GSK_PATH_FLAT;
+  g_array_append_vals (builder->ops, (gskpathop[1]) { gsk_pathop_encode_index (GSK_PATH_MOVE, 0) }, 1);
+  g_array_append_val (builder->points, builder->current_point);
+}
+
+static void
+gsk_path_builder_append_current (GskPathBuilder         *builder,
+                                 GskPathOperation        op,
+                                 gsize                   n_points,
+                                 const graphene_point_t *points)
+{
+  gsk_path_builder_ensure_current (builder);
+
+  g_array_append_vals (builder->ops, (gskpathop[1]) { gsk_pathop_encode_index (op, builder->points->len - 1) }, 1);
+  g_array_append_vals (builder->points, points, n_points);
+
+  builder->current_point = points[n_points - 1];
+}
+
+static void
+gsk_path_builder_end_current (GskPathBuilder *builder)
+{
+  GskContour *contour;
+
+  if (builder->ops->len == 0)
+   return;
+
+  contour = gsk_standard_contour_new (builder->flags,
+                                      (graphene_point_t *) builder->points->data,
+                                      builder->points->len,
+                                      (gskpathop *) builder->ops->data,
+                                      builder->ops->len,
+                                      (graphene_point_t *) builder->points->data - (graphene_point_t *) NULL);
+
+  g_array_set_size (builder->ops, 0);
+  g_array_set_size (builder->points, 0);
+
+  /* do this at the end to avoid inflooping when add_contour calls back here */
+  gsk_path_builder_add_contour (builder, contour);
+}
+
+static void
+gsk_path_builder_clear (GskPathBuilder *builder)
+{
+  gsk_path_builder_end_current (builder);
+
+  g_slist_free_full (builder->contours, g_free);
+  builder->contours = NULL;
+}
+
+/**
+ * gsk_path_builder_unref:
+ * @builder: a `GskPathBuilder`
+ *
+ * Releases a reference on the given @builder.
+ */
+void
+gsk_path_builder_unref (GskPathBuilder *builder)
+{
+  g_return_if_fail (builder != NULL);
+  g_return_if_fail (builder->ref_count > 0);
+
+  builder->ref_count -= 1;
+
+  if (builder->ref_count > 0)
+    return;
+
+  gsk_path_builder_clear (builder);
+  g_array_unref (builder->ops);
+  g_array_unref (builder->points);
+  g_slice_free (GskPathBuilder, builder);
+}
+
+/**
+ * gsk_path_builder_free_to_path: (skip)
+ * @builder: a `GskPathBuilder`
+ *
+ * Creates a new `GskPath` from the current state of the
+ * given @builder, and frees the @builder instance.
+ *
+ * Returns: (transfer full): the newly created `GskPath`
+ *   with all the contours added to @builder
+ */
+GskPath *
+gsk_path_builder_free_to_path (GskPathBuilder *builder)
+{
+  GskPath *res;
+
+  g_return_val_if_fail (builder != NULL, NULL);
+
+  res = gsk_path_builder_to_path (builder);
+
+  gsk_path_builder_unref (builder);
+
+  return res;
+}
+
+/**
+ * gsk_path_builder_to_path:
+ * @builder: a `GskPathBuilder`
+ *
+ * Creates a new `GskPath` from the given @builder.
+ *
+ * The given `GskPathBuilder` is reset once this function returns;
+ * you cannot call this function multiple times on the same @builder instance.
+ *
+ * This function is intended primarily for bindings. C code should use
+ * gsk_path_builder_free_to_path().
+ *
+ * Returns: (transfer full): the newly created `GskPath`
+ *   with all the contours added to @builder
+ */
+GskPath *
+gsk_path_builder_to_path (GskPathBuilder *builder)
+{
+  GskPath *path;
+
+  g_return_val_if_fail (builder != NULL, NULL);
+
+  gsk_path_builder_end_current (builder);
+
+  builder->contours = g_slist_reverse (builder->contours);
+
+  path = gsk_path_new_from_contours (builder->contours);
+
+  gsk_path_builder_clear (builder);
+
+  return path;
+}
+
+void
+gsk_path_builder_add_contour (GskPathBuilder *builder,
+                              GskContour     *contour)
+{
+  gsk_path_builder_end_current (builder);
+
+  builder->contours = g_slist_prepend (builder->contours, contour);
+}
+
+/**
+ * gsk_path_builder_get_current_point:
+ * @builder: a #GskPathBuilder
+ *
+ * Gets the current point. The current point is used for relative
+ * drawing commands and updated after every operation.
+ *
+ * When @builder is created, the default current point is set to (0, 0).
+ *
+ * Returns: (transfer none): The current point
+ **/
+const graphene_point_t *
+gsk_path_builder_get_current_point (GskPathBuilder *builder)
+{
+  g_return_val_if_fail (builder != NULL, NULL);
+
+  return &builder->current_point;
+}
+
+/**
+ * gsk_path_builder_add_path:
+ * @builder: a `GskPathBuilder`
+ * @path: (transfer none): the path to append
+ *
+ * Appends all of @path to @builder.
+ **/
+void
+gsk_path_builder_add_path (GskPathBuilder *builder,
+                           GskPath        *path)
+{
+  gsize i;
+
+  g_return_if_fail (builder != NULL);
+  g_return_if_fail (path != NULL);
+
+  for (i = 0; i < gsk_path_get_n_contours (path); i++)
+    {
+      const GskContour *contour = gsk_path_get_contour (path, i);
+
+      gsk_path_builder_add_contour (builder, gsk_contour_dup (contour));
+    }
+}
+
+/**
+ * gsk_path_builder_add_rect:
+ * @builder: A `GskPathBuilder`
+ * @rect: The rectangle to add to @builder
+ *
+ * Adds a path representing the given rectangle.
+ *
+ * If the width or height of the rectangle is negative, the start
+ * point will be on the right or bottom, respectively.
+ *
+ * If the the width or height are 0, the path will be a closed
+ * horizontal or vertical line. If both are 0, it'll be a closed dot.
+ **/
+void
+gsk_path_builder_add_rect (GskPathBuilder        *builder,
+                           const graphene_rect_t *rect)
+{
+  GskContour *contour;
+
+  g_return_if_fail (builder != NULL);
+
+  contour = gsk_rect_contour_new (rect);
+  gsk_path_builder_add_contour (builder, contour);
+
+  gsk_contour_get_start_end (contour, NULL, &builder->current_point);
+}
+
+/**
+ * gsk_path_builder_add_rounded_rect:
+ * @builder: a `GskPathBuilder`
+ * @rect: the rounded rect
+ *
+ * Adds @rect as a new contour to the path built in @builder.
+ **/
+void
+gsk_path_builder_add_rounded_rect (GskPathBuilder       *builder,
+                                   const GskRoundedRect *rect)
+{
+  const float weight = sqrt(0.5f);
+
+  g_return_if_fail (builder != NULL);
+  g_return_if_fail (rect != NULL);
+
+  gsk_path_builder_move_to (builder,
+                            rect->bounds.origin.x + rect->corner[GSK_CORNER_TOP_LEFT].width,
+                            rect->bounds.origin.y);
+  /* top */
+  gsk_path_builder_line_to (builder,
+                            rect->bounds.origin.x + rect->bounds.size.width - rect->corner[GSK_CORNER_TOP_RIGHT].width,
+                            rect->bounds.origin.y);
+  /* topright corner */
+  gsk_path_builder_conic_to (builder,
+                             rect->bounds.origin.x + rect->bounds.size.width,
+                             rect->bounds.origin.y,
+                             rect->bounds.origin.x + rect->bounds.size.width,
+                             rect->bounds.origin.y + rect->corner[GSK_CORNER_TOP_RIGHT].height,
+                             weight);
+  /* right */
+  gsk_path_builder_line_to (builder,
+                            rect->bounds.origin.x + rect->bounds.size.width,
+                            rect->bounds.origin.y + rect->bounds.size.height - rect->corner[GSK_CORNER_BOTTOM_RIGHT].height);
+  /* bottomright corner */
+  gsk_path_builder_conic_to (builder,
+                             rect->bounds.origin.x + rect->bounds.size.width,
+                             rect->bounds.origin.y + rect->bounds.size.height,
+                             rect->bounds.origin.x + rect->bounds.size.width - rect->corner[GSK_CORNER_BOTTOM_RIGHT].width,
+                             rect->bounds.origin.y + rect->bounds.size.height,
+                             weight);
+  /* bottom */
+  gsk_path_builder_line_to (builder,
+                            rect->bounds.origin.x + rect->corner[GSK_CORNER_BOTTOM_LEFT].width,
+                            rect->bounds.origin.y + rect->bounds.size.height);
+  /* bottomleft corner */
+  gsk_path_builder_conic_to (builder,
+                             rect->bounds.origin.x,
+                             rect->bounds.origin.y + rect->bounds.size.height,
+                             rect->bounds.origin.x,
+                             rect->bounds.origin.y + rect->bounds.size.height - rect->corner[GSK_CORNER_BOTTOM_LEFT].height,
+                             weight);
+  /* left */
+  gsk_path_builder_line_to (builder,
+                            rect->bounds.origin.x,
+                            rect->bounds.origin.y + rect->corner[GSK_CORNER_TOP_LEFT].height);
+  /* topleft corner */
+  gsk_path_builder_conic_to (builder,
+                             rect->bounds.origin.x,
+                             rect->bounds.origin.y,
+                             rect->bounds.origin.x + rect->corner[GSK_CORNER_TOP_LEFT].width,
+                             rect->bounds.origin.y,
+                             weight);
+  /* done */
+  gsk_path_builder_close (builder);
+}
+
+/**
+ * gsk_path_builder_add_circle:
+ * @builder: a `GskPathBuilder`
+ * @center: the center of the circle
+ * @radius: the radius of the circle
+ *
+ * Adds a circle with the @center and @radius.
+ **/
+void
+gsk_path_builder_add_circle (GskPathBuilder         *builder,
+                             const graphene_point_t *center,
+                             float                   radius)
+{
+  GskContour *contour;
+
+  g_return_if_fail (builder != NULL);
+  g_return_if_fail (center != NULL);
+  g_return_if_fail (radius > 0);
+
+  contour = gsk_circle_contour_new (center, radius, 0, 360);
+  gsk_path_builder_add_contour (builder, contour);
+}
+
+/**
+ * gsk_path_builder_add_ellipse:
+ * @builder: a `GskPathBuilder`
+ * @center: the center point of the ellipse
+ * @radius: the radius of the ellipse in x/y direction
+ *
+ * Adds an ellipse with the given @center and the @radius in
+ * x/y direction.
+ **/
+void
+gsk_path_builder_add_ellipse (GskPathBuilder         *builder,
+                              const graphene_point_t *center,
+                              const graphene_size_t  *radius)
+{
+  const float weight = sqrt(0.5f);
+  graphene_point_t pts[8];
+
+  g_return_if_fail (builder != NULL);
+  g_return_if_fail (center != NULL);
+  g_return_if_fail (radius != NULL);
+
+  pts[0] = GRAPHENE_POINT_INIT (center->x + radius->width / 2,
+                                center->y);
+  pts[1] = GRAPHENE_POINT_INIT (center->x + radius->width / 2,
+                                center->y + radius->height / 2);
+  pts[2] = GRAPHENE_POINT_INIT (center->x,
+                                center->y + radius->height / 2);
+  pts[3] = GRAPHENE_POINT_INIT (center->x - radius->width / 2,
+                                center->y + radius->height / 2);
+  pts[4] = GRAPHENE_POINT_INIT (center->x - radius->width / 2,
+                                center->y);
+  pts[5] = GRAPHENE_POINT_INIT (center->x - radius->width / 2,
+                                center->y - radius->height / 2);
+  pts[6] = GRAPHENE_POINT_INIT (center->x,
+                                center->y - radius->height / 2);
+  pts[7] = GRAPHENE_POINT_INIT (center->x + radius->width / 2,
+                                center->y - radius->height / 2);
+
+  gsk_path_builder_move_to (builder, pts[0].x, pts[0].y);
+  gsk_path_builder_conic_to (builder, pts[1].x, pts[1].y, pts[2].x, pts[2].y, weight);
+  gsk_path_builder_conic_to (builder, pts[3].x, pts[3].y, pts[4].x, pts[4].y, weight);
+  gsk_path_builder_conic_to (builder, pts[5].x, pts[5].y, pts[6].x, pts[6].y, weight);
+  gsk_path_builder_conic_to (builder, pts[7].x, pts[7].y, pts[0].x, pts[0].y, weight);
+  gsk_path_builder_close (builder);
+}
+
+/**
+ * gsk_path_builder_move_to:
+ * @builder: a `GskPathBuilder`
+ * @x: x coordinate
+ * @y: y coordinate
+ *
+ * Starts a new contour by placing the pen at @x, @y.
+ *
+ * If `gsk_path_builder_move_to()` is called twice in succession,
+ * the first call will result in a contour made up of a single point.
+ * The second call will start a new contour.
+ **/
+void
+gsk_path_builder_move_to (GskPathBuilder *builder,
+                          float           x,
+                          float           y)
+{
+  g_return_if_fail (builder != NULL);
+
+  gsk_path_builder_end_current (builder);
+
+  builder->current_point = GRAPHENE_POINT_INIT(x, y);
+
+  gsk_path_builder_ensure_current (builder);
+}
+
+/**
+ * gsk_path_builder_rel_move_to:
+ * @builder: a `GskPathBuilder`
+ * @x: x offset
+ * @y: y offset
+ *
+ * Starts a new contour by placing the pen at @x, @y relative to the current
+ * point.
+ *
+ * This is the relative version of [method@Gsk.PathBuilder.move_to].
+ **/
+void
+gsk_path_builder_rel_move_to (GskPathBuilder *builder,
+                              float           x,
+                              float           y)
+{
+  g_return_if_fail (builder != NULL);
+
+  gsk_path_builder_move_to (builder,
+                            builder->current_point.x + x,
+                            builder->current_point.y + y);
+}
+
+/**
+ * gsk_path_builder_line_to:
+ * @builder: a `GskPathBuilder`
+ * @x: x coordinate
+ * @y: y coordinate
+ *
+ * Draws a line from the current point to @x, @y and makes it the new current
+ * point.
+ **/
+void
+gsk_path_builder_line_to (GskPathBuilder *builder,
+                          float           x,
+                          float           y)
+{
+  g_return_if_fail (builder != NULL);
+
+  /* skip the line if it goes to the same point */
+  if (graphene_point_equal (&builder->current_point,
+                            &GRAPHENE_POINT_INIT (x, y)))
+    return;
+
+  gsk_path_builder_append_current (builder,
+                                   GSK_PATH_LINE,
+                                   1, (graphene_point_t[1]) {
+                                     GRAPHENE_POINT_INIT (x, y)
+                                   });
+}
+
+/**
+ * gsk_path_builder_rel_line_to:
+ * @builder: a `GskPathBuilder`
+ * @x: x offset
+ * @y: y offset
+ *
+ * Draws a line from the current point to a point offset to it by @x, @y
+ * and makes it the new current point.
+ *
+ * This is the relative version of [method@Gsk.PathBuilder.line_to].
+ **/
+void
+gsk_path_builder_rel_line_to (GskPathBuilder *builder,
+                              float           x,
+                              float           y)
+{
+  g_return_if_fail (builder != NULL);
+
+  gsk_path_builder_line_to (builder,
+                            builder->current_point.x + x,
+                            builder->current_point.y + y);
+}
+
+/**
+ * gsk_path_builder_curve_to:
+ * @builder: a `GskPathBuilder`
+ * @x1: x coordinate of first control point
+ * @y1: y coordinate of first control point
+ * @x2: x coordinate of second control point
+ * @y2: y coordinate of second control point
+ * @x3: x coordinate of the end of the curve
+ * @y3: y coordinate of the end of the curve
+ *
+ * Adds a [cubic Bézier curve](https://en.wikipedia.org/wiki/B%C3%A9zier_curve)
+ * from the current point to @x3, @y3 with @x1, @y1 and @x2, @y2 as the control
+ * points.
+ *
+ * After this, @x3, @y3 will be the new current point.
+ **/
+void
+gsk_path_builder_curve_to (GskPathBuilder *builder,
+                           float           x1,
+                           float           y1,
+                           float           x2,
+                           float           y2,
+                           float           x3,
+                           float           y3)
+{
+  g_return_if_fail (builder != NULL);
+
+  builder->flags &= ~GSK_PATH_FLAT;
+  gsk_path_builder_append_current (builder,
+                                   GSK_PATH_CURVE,
+                                   3, (graphene_point_t[3]) {
+                                     GRAPHENE_POINT_INIT (x1, y1),
+                                     GRAPHENE_POINT_INIT (x2, y2),
+                                     GRAPHENE_POINT_INIT (x3, y3)
+                                   });
+}
+
+/**
+ * gsk_path_builder_rel_curve_to:
+ * @builder: a `GskPathBuilder`
+ * @x1: x offset of first control point
+ * @y1: y offset of first control point
+ * @x2: x offset of second control point
+ * @y2: y offset of second control point
+ * @x3: x offset of the end of the curve
+ * @y3: y offset of the end of the curve
+ *
+ * Adds a [cubic Bézier curve](https://en.wikipedia.org/wiki/B%C3%A9zier_curve)
+ * from the current point to @x3, @y3 with @x1, @y1 and @x2, @y2 as the control
+ * points. All coordinates are given relative to the current point.
+ *
+ * This is the relative version of [method@Gsk.PathBuilder.curve_to].
+ **/
+void
+gsk_path_builder_rel_curve_to (GskPathBuilder *builder,
+                               float           x1,
+                               float           y1,
+                               float           x2,
+                               float           y2,
+                               float           x3,
+                               float           y3)
+{
+  g_return_if_fail (builder != NULL);
+
+  gsk_path_builder_curve_to (builder,
+                             builder->current_point.x + x1,
+                             builder->current_point.y + y1,
+                             builder->current_point.x + x2,
+                             builder->current_point.y + y2,
+                             builder->current_point.x + x3,
+                             builder->current_point.y + y3);
+}
+
+/**
+ * gsk_path_builder_conic_to:
+ * @builder: a `GskPathBuilder`
+ * @x1: x coordinate of control point
+ * @y1: y coordinate of control point
+ * @x2: x coordinate of the end of the curve
+ * @y2: y coordinate of the end of the curve
+ * @weight: weight of the curve
+ *
+ * Adds a [conic curve](https://en.wikipedia.org/wiki/Non-uniform_rational_B-spline)
+ * from the current point to @x2, @y2 with the given
+ * @weight and @x1, @y1 as the single control point.
+ *
+ * Conic curves can be used to draw ellipses and circles.
+ *
+ * After this, @x2, @y2 will be the new current point.
+ **/
+void
+gsk_path_builder_conic_to (GskPathBuilder *builder,
+                           float           x1,
+                           float           y1,
+                           float           x2,
+                           float           y2,
+                           float           weight)
+{
+  g_return_if_fail (builder != NULL);
+  g_return_if_fail (weight >= 0);
+
+  builder->flags &= ~GSK_PATH_FLAT;
+  gsk_path_builder_append_current (builder,
+                                   GSK_PATH_CONIC,
+                                   3, (graphene_point_t[3]) {
+                                     GRAPHENE_POINT_INIT (x1, y1),
+                                     GRAPHENE_POINT_INIT (weight, 0),
+                                     GRAPHENE_POINT_INIT (x2, y2)
+                                   });
+}
+
+/**
+ * gsk_path_builder_rel_conic_to:
+ * @builder: a `GskPathBuilder`
+ * @x1: x offset of control point
+ * @y1: y offset of control point
+ * @x2: x offset of the end of the curve
+ * @y2: y offset of the end of the curve
+ * @weight: weight of the curve
+ *
+ * Adds a [conic curve](https://en.wikipedia.org/wiki/Non-uniform_rational_B-spline)
+ * from the current point to @x2, @y2 with the given
+ * @weight and @x1, @y1 as the single control point.
+ *
+ * This is the relative version of [method@Gsk.PathBuilder.conic_to].
+ **/
+void
+gsk_path_builder_rel_conic_to (GskPathBuilder *builder,
+                               float           x1,
+                               float           y1,
+                               float           x2,
+                               float           y2,
+                               float           weight)
+{
+  g_return_if_fail (builder != NULL);
+  g_return_if_fail (weight >= 0);
+
+  gsk_path_builder_conic_to (builder,
+                             builder->current_point.x + x1,
+                             builder->current_point.y + y1,
+                             builder->current_point.x + x2,
+                             builder->current_point.y + y2,
+                             weight);
+}
+
+/**
+ * gsk_path_builder_close:
+ * @builder: a `GskPathBuilder`
+ *
+ * Ends the current contour with a line back to the start point.
+ *
+ * Note that this is different from calling [method@Gsk.PathBuilder.line_to]
+ * with the start point in that the contour will be closed. A closed
+ * contour behaves different from an open one when stroking its start
+ * and end point are considered connected, so they will be joined
+ * via the line join, and not ended with line caps.
+ **/
+void
+gsk_path_builder_close (GskPathBuilder *builder)
+{
+  g_return_if_fail (builder != NULL);
+
+  if (builder->ops->len == 0)
+    return;
+
+  builder->flags |= GSK_PATH_CLOSED;
+  gsk_path_builder_append_current (builder,
+                                   GSK_PATH_CLOSE,
+                                   1, (graphene_point_t[1]) {
+                                     g_array_index (builder->points, graphene_point_t, 0)
+                                   });
+
+  gsk_path_builder_end_current (builder);
+}
+
+
+static void
+arc_segment (GskPathBuilder *builder,
+             double          cx,
+             double          cy,
+             double          rx,
+             double          ry,
+             double          sin_phi,
+             double          cos_phi,
+             double          sin_th0,
+             double          cos_th0,
+             double          sin_th1,
+             double          cos_th1,
+             double          t)
+{
+  double x1, y1, x2, y2, x3, y3;
+
+  x1 = rx * (cos_th0 - t * sin_th0);
+  y1 = ry * (sin_th0 + t * cos_th0);
+  x3 = rx * cos_th1;
+  y3 = ry * sin_th1;
+  x2 = x3 + rx * (t * sin_th1);
+  y2 = y3 + ry * (-t * cos_th1);
+
+  gsk_path_builder_curve_to (builder,
+                             cx + cos_phi * x1 - sin_phi * y1,
+                             cy + sin_phi * x1 + cos_phi * y1,
+                             cx + cos_phi * x2 - sin_phi * y2,
+                             cy + sin_phi * x2 + cos_phi * y2,
+                             cx + cos_phi * x3 - sin_phi * y3,
+                             cy + sin_phi * x3 + cos_phi * y3);
+}
+
+void
+gsk_path_builder_svg_arc_to (GskPathBuilder *builder,
+                             float           rx,
+                             float           ry,
+                             float           x_axis_rotation,
+                             gboolean        large_arc,
+                             gboolean        positive_sweep,
+                             float           x,
+                             float           y)
+{
+  graphene_point_t *current;
+  double x1, y1, x2, y2;
+  double phi, sin_phi, cos_phi;
+  double mid_x, mid_y;
+  double lambda;
+  double d;
+  double k;
+  double x1_, y1_;
+  double cx_, cy_;
+  double  cx, cy;
+  double ux, uy, u_len;
+  double cos_theta1, theta1;
+  double vx, vy, v_len;
+  double dp_uv;
+  double cos_delta_theta, delta_theta;
+  int i, n_segs;
+  double d_theta, theta;
+  double sin_th0, cos_th0;
+  double sin_th1, cos_th1;
+  double th_half;
+  double t;
+
+  if (builder->points->len > 0)
+    {
+      current = &g_array_index (builder->points, graphene_point_t, builder->points->len - 1);
+      x1 = current->x;
+      y1 = current->y;
+    }
+  else
+    {
+      x1 = 0;
+      y1 = 0;
+    }
+  x2 = x;
+  y2 = y;
+
+  phi = x_axis_rotation * M_PI / 180.0;
+  sincos (phi, &sin_phi, &cos_phi);
+
+  rx = fabs (rx);
+  ry = fabs (ry);
+
+  mid_x = (x1 - x2) / 2;
+  mid_y = (y1 - y2) / 2;
+
+  x1_ = cos_phi * mid_x + sin_phi * mid_y;
+  y1_ = - sin_phi * mid_x + cos_phi * mid_y;
+
+  lambda = (x1_ / rx) * (x1_ / rx) + (y1_ / ry) * (y1_ / ry);
+  if (lambda > 1)
+    {
+      lambda = sqrt (lambda);
+      rx *= lambda;
+      ry *= lambda;
+    }
+
+  d = (rx * y1_) * (rx * y1_) + (ry * x1_) * (ry * x1_);
+  if (d == 0)
+    return;
+
+  k = sqrt (fabs ((rx * ry) * (rx * ry) / d - 1.0));
+  if (positive_sweep == large_arc)
+    k = -k;
+
+  cx_ = k * rx * y1_ / ry;
+  cy_ = -k * ry * x1_ / rx;
+
+  cx = cos_phi * cx_ - sin_phi * cy_ + (x1 + x2) / 2;
+  cy = sin_phi * cx_ + cos_phi * cy_ + (y1 + y2) / 2;
+
+  ux = (x1_ - cx_) / rx;
+  uy = (y1_ - cy_) / ry;
+  u_len = sqrt (ux * ux + uy * uy);
+  if (u_len == 0)
+    return;
+
+  cos_theta1 = CLAMP (ux / u_len, -1, 1);
+  theta1 = acos (cos_theta1);
+  if (uy < 0)
+    theta1 = - theta1;
+
+  vx = (- x1_ - cx_) / rx;
+  vy = (- y1_ - cy_) / ry;
+  v_len = sqrt (vx * vx + vy * vy);
+  if (v_len == 0)
+    return;
+
+  dp_uv = ux * vx + uy * vy;
+  cos_delta_theta = CLAMP (dp_uv / (u_len * v_len), -1, 1);
+  delta_theta = acos (cos_delta_theta);
+  if (ux * vy - uy * vx < 0)
+    delta_theta = - delta_theta;
+  if (positive_sweep && delta_theta < 0)
+    delta_theta += 2 * M_PI;
+  else if (!positive_sweep && delta_theta > 0)
+    delta_theta -= 2 * M_PI;
+
+  n_segs = ceil (fabs (delta_theta / (M_PI_2 + 0.001)));
+  d_theta = delta_theta / n_segs;
+  theta = theta1;
+  sincos (theta1, &sin_th1, &cos_th1);
+
+  th_half = d_theta / 2;
+  t = (8.0 / 3.0) * sin (th_half / 2) * sin (th_half / 2) / sin (th_half);
+
+  for (i = 0; i < n_segs; i++)
+    {
+      theta = theta1;
+      theta1 = theta + d_theta;
+      sin_th0 = sin_th1;
+      cos_th0 = cos_th1;
+      sincos (theta1, &sin_th1, &cos_th1);
+      arc_segment (builder,
+                   cx, cy, rx, ry,
+                   sin_phi, cos_phi,
+                   sin_th0, cos_th0,
+                   sin_th1, cos_th1,
+                   t);
+    }
+}
+
+/**
+ * gsk_path_builder_add_layout:
+ * @builder: a `GskPathBuilder`
+ * @layout: the pango layout to add
+ *
+ * Adds the outlines for the glyphs in @layout to @builder.
+ */
+void
+gsk_path_builder_add_layout (GskPathBuilder *builder,
+                             PangoLayout    *layout)
+{
+  cairo_surface_t *surface;
+  cairo_t *cr;
+  cairo_path_t *cairo_path;
+  GskPath *path;
+
+  surface = cairo_recording_surface_create (CAIRO_CONTENT_COLOR_ALPHA, NULL);
+  cr = cairo_create (surface);
+
+  pango_cairo_layout_path (cr, layout);
+  cairo_path = cairo_copy_path_flat (cr);
+  path = gsk_path_new_from_cairo (cairo_path);
+
+  gsk_path_builder_add_path (builder, path);
+
+  gsk_path_unref (path);
+
+  cairo_path_destroy (cairo_path);
+  cairo_destroy (cr);
+  cairo_surface_destroy (surface);
+}
@@ -0,0 +1,132 @@
+/*
+ * Copyright © 2020 Benjamin Otte
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Benjamin Otte <otte@gnome.org>
+ */
+
+#ifndef __GSK_PATH_BUILDER_H__
+#define __GSK_PATH_BUILDER_H__
+
+#if !defined (__GSK_H_INSIDE__) && !defined (GTK_COMPILATION)
+#error "Only <gsk/gsk.h> can be included directly."
+#endif
+
+
+#include <gsk/gskroundedrect.h>
+#include <gsk/gsktypes.h>
+
+G_BEGIN_DECLS
+
+#define GSK_TYPE_PATH_BUILDER (gsk_path_builder_get_type ())
+
+GDK_AVAILABLE_IN_ALL
+GType                   gsk_path_builder_get_type               (void) G_GNUC_CONST;
+
+GDK_AVAILABLE_IN_ALL
+GskPathBuilder *        gsk_path_builder_new                    (void);
+GDK_AVAILABLE_IN_ALL
+GskPathBuilder *        gsk_path_builder_ref                    (GskPathBuilder         *builder);
+GDK_AVAILABLE_IN_ALL
+void                    gsk_path_builder_unref                  (GskPathBuilder         *builder);
+GDK_AVAILABLE_IN_ALL
+GskPath *               gsk_path_builder_free_to_path           (GskPathBuilder         *builder) G_GNUC_WARN_UNUSED_RESULT;
+GDK_AVAILABLE_IN_ALL
+GskPath *               gsk_path_builder_to_path                (GskPathBuilder         *builder) G_GNUC_WARN_UNUSED_RESULT;
+
+GDK_AVAILABLE_IN_ALL
+const graphene_point_t *gsk_path_builder_get_current_point      (GskPathBuilder         *builder);
+
+GDK_AVAILABLE_IN_ALL
+void                    gsk_path_builder_add_path               (GskPathBuilder         *builder,
+                                                                 GskPath                *path);
+GDK_AVAILABLE_IN_ALL
+void                    gsk_path_builder_add_rect               (GskPathBuilder         *builder,
+                                                                 const graphene_rect_t  *rect);
+GDK_AVAILABLE_IN_ALL
+void                    gsk_path_builder_add_rounded_rect       (GskPathBuilder         *builder,
+                                                                 const GskRoundedRect   *rect);
+GDK_AVAILABLE_IN_ALL
+void                    gsk_path_builder_add_circle             (GskPathBuilder         *builder,
+                                                                 const graphene_point_t *center,
+                                                                 float                   radius);
+GDK_AVAILABLE_IN_ALL
+void                    gsk_path_builder_add_ellipse            (GskPathBuilder         *builder,
+                                                                 const graphene_point_t *center,
+                                                                 const graphene_size_t  *radius);
+/* next function implemented in gskpathmeasure.c */
+GDK_AVAILABLE_IN_ALL
+void                    gsk_path_builder_add_segment            (GskPathBuilder         *builder,
+                                                                 GskPathMeasure         *measure,
+                                                                 float                   start,
+                                                                 float                   end);
+
+
+GDK_AVAILABLE_IN_ALL
+void                    gsk_path_builder_move_to                (GskPathBuilder         *builder,
+                                                                 float                   x,
+                                                                 float                   y);
+GDK_AVAILABLE_IN_ALL
+void                    gsk_path_builder_rel_move_to            (GskPathBuilder         *builder,
+                                                                 float                   x,
+                                                                 float                   y);
+GDK_AVAILABLE_IN_ALL
+void                    gsk_path_builder_line_to                (GskPathBuilder         *builder,
+                                                                 float                   x,
+                                                                 float                   y);
+GDK_AVAILABLE_IN_ALL
+void                    gsk_path_builder_rel_line_to            (GskPathBuilder         *builder,
+                                                                 float                   x,
+                                                                 float                   y);
+GDK_AVAILABLE_IN_ALL
+void                    gsk_path_builder_curve_to               (GskPathBuilder         *builder,
+                                                                 float                   x1,
+                                                                 float                   y1,
+                                                                 float                   x2,
+                                                                 float                   y2,
+                                                                 float                   x3,
+                                                                 float                   y3);
+GDK_AVAILABLE_IN_ALL
+void                    gsk_path_builder_rel_curve_to           (GskPathBuilder         *builder,
+                                                                 float                   x1,
+                                                                 float                   y1,
+                                                                 float                   x2,
+                                                                 float                   y2,
+                                                                 float                   x3,
+                                                                 float                   y3);
+GDK_AVAILABLE_IN_ALL
+void                    gsk_path_builder_conic_to               (GskPathBuilder         *builder,
+                                                                 float                   x1,
+                                                                 float                   y1,
+                                                                 float                   x2,
+                                                                 float                   y2,
+                                                                 float                   weight);
+GDK_AVAILABLE_IN_ALL
+void                    gsk_path_builder_rel_conic_to           (GskPathBuilder         *builder,
+                                                                 float                   x1,
+                                                                 float                   y1,
+                                                                 float                   x2,
+                                                                 float                   y2,
+                                                                 float                   weight);
+GDK_AVAILABLE_IN_ALL
+void                    gsk_path_builder_close                  (GskPathBuilder         *builder);
+
+GDK_AVAILABLE_IN_ALL
+void                    gsk_path_builder_add_layout             (GskPathBuilder         *builder,
+                                                                 PangoLayout            *layout);
+
+G_END_DECLS
+
+#endif /* __GSK_PATH_BUILDER_H__ */
@@ -0,0 +1,291 @@
+/*
+ * Copyright © 2020 Benjamin Otte
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Benjamin Otte <otte@gnome.org>
+ */
+
+#include "config.h"
+
+#include "gskpathdashprivate.h"
+
+#include "gskcontourprivate.h"
+#include "gskcurveprivate.h"
+#include "gskpathprivate.h"
+#include "gskstrokeprivate.h"
+
+typedef struct 
+{
+  float offset;                 /* how much of the current dash we've spent */
+  gsize dash_index;             /* goes from 0 to n_dash * 2, so we don't have to care about on/off
+                                   for uneven dashes */
+  gboolean on;                  /* If we're currently dashing or not */
+  gboolean may_close;           /* TRUE if we haven't turned the dash off in this contour */
+  gboolean needs_move_to;       /* If we have emitted the initial move_to() yet */
+  enum {
+    NORMAL, /* no special behavior required */
+    SKIP,   /* skip the next dash */
+    ONLY,   /* only do the first dash */
+    DONE    /* done with the first dash */
+  } first_dash_behavior;        /* How to handle the first dash in the loop. We loop closed contours
+                                   twice to make sure the first dash and the last dash can get joined */
+
+  GskCurve curve;               /* Curve we are currently processing */
+
+  float collect_start;          /* We're collecting multiple line segments when decomposing. */
+  float collect_length;         /* No need to emit a curve for every line segment when the dash is long enough. */
+
+  /* from the stroke */
+  float *dash;
+  gsize n_dash;
+  float dash_length;
+  float dash_offset;
+
+  float tolerance;
+  GskPathForeachFunc func;
+  gpointer user_data;
+} GskPathDash;
+
+static void
+gsk_path_dash_setup (GskPathDash *self)
+{
+  self->offset = fmodf (self->dash_offset, 2 * self->dash_length);
+
+  self->dash_index = 0;
+  self->on = TRUE;
+  self->may_close = TRUE;
+  while (self->offset > self->dash[self->dash_index % self->n_dash])
+    {
+      self->offset -= self->dash[self->dash_index % self->n_dash];
+      self->dash_index++;
+      self->on = !self->on;
+    }
+  if (self->first_dash_behavior != ONLY)
+    self->needs_move_to = TRUE;
+}
+
+static gboolean
+gsk_path_dash_ensure_move_to (GskPathDash            *self,
+                              const graphene_point_t *pt)
+{
+  if (!self->needs_move_to)
+    return TRUE;
+
+  if (!self->func (GSK_PATH_MOVE, pt, 1, 0, self->user_data))
+    return FALSE;
+
+  self->needs_move_to = FALSE;
+  return TRUE;
+}
+
+static gboolean
+gsk_path_dash_add_line_segment (const graphene_point_t *start,
+                                const graphene_point_t *end,
+                                float                   t_start,
+                                float                   t_end,
+                                gpointer                user_data)
+{
+  GskPathDash *self = user_data;
+  float remaining, length, t_step;
+
+  length = graphene_point_distance (start, end, NULL, NULL);
+  if (self->collect_length)
+    {
+      t_start = self->collect_start;
+      length += self->collect_length;
+      self->collect_length = 0;
+    }
+
+  t_step = t_end - t_start;
+  remaining = length;
+
+  while (remaining)
+    {
+      float piece;
+
+      if (self->offset + remaining <= self->dash[self->dash_index % self->n_dash])
+        {
+          /* try collecting multiple line segments */
+          if (t_end < 1.0)
+            {
+              self->collect_start = t_start + t_step * (length - remaining) / length;
+              self->collect_length = remaining;
+              return TRUE;
+            }
+
+          piece = remaining;
+        }
+      else
+        piece = self->dash[self->dash_index % self->n_dash] - self->offset;
+
+      if (self->on)
+        {
+          if (self->first_dash_behavior != SKIP)
+            {
+              GskCurve segment;
+
+              if (piece)
+                {
+                  gsk_curve_segment (&self->curve,
+                                     t_start + t_step * (length - remaining) / length,
+                                     t_start + t_step * (length - (remaining - piece)) / length,
+                                     &segment);
+                  if (!gsk_path_dash_ensure_move_to (self, gsk_curve_get_start_point (&segment)))
+                    return FALSE;
+
+                  if (!gsk_pathop_foreach (gsk_curve_pathop (&segment), self->func, self->user_data))
+                    return FALSE;
+                }
+              else
+                {
+                  graphene_point_t p;
+
+                  gsk_curve_get_point (&self->curve, t_start + t_step * (length - remaining) / length, &p);
+                  if (!gsk_path_dash_ensure_move_to (self, &p))
+                    return FALSE;
+                }
+            }
+        }
+      else
+        {
+          self->may_close = FALSE;
+          if (self->first_dash_behavior == ONLY)
+            {
+              self->first_dash_behavior = DONE;
+              return FALSE;
+            }
+          self->first_dash_behavior = NORMAL;
+        }
+
+      if (self->offset + remaining <= self->dash[self->dash_index % self->n_dash])
+        {
+          self->offset += remaining;
+          remaining = 0;
+        }
+      else
+        {
+          remaining -= piece;
+          self->offset = 0;
+          self->dash_index++;
+          self->dash_index %= 2 * self->n_dash;
+          self->on = !self->on;
+          self->needs_move_to = TRUE;
+        }
+    }
+
+  return TRUE;
+}
+
+static gboolean
+gsk_path_dash_foreach (GskPathOperation        op,
+                       const graphene_point_t *pts,
+                       gsize                   n_pts,
+                       float                   weight,
+                       gpointer                user_data)
+{
+  GskPathDash *self = user_data;
+
+  switch (op)
+  {
+    case GSK_PATH_MOVE:
+      gsk_path_dash_setup (self);
+      break;
+
+    case GSK_PATH_CLOSE:
+      if (self->may_close)
+        {
+          if (graphene_point_equal (&pts[0], &pts[1]))
+            return self->func (GSK_PATH_CLOSE, pts, 2, 0, self->user_data);
+        }
+      else
+        op = GSK_PATH_LINE;
+      G_GNUC_FALLTHROUGH;
+
+    case GSK_PATH_LINE:
+    case GSK_PATH_CURVE:
+    case GSK_PATH_CONIC:
+      gsk_curve_init_foreach (&self->curve, op, pts, n_pts, weight);
+      if (!gsk_curve_decompose (&self->curve, self->tolerance, gsk_path_dash_add_line_segment, self))
+        return FALSE;
+      break;
+
+    default:
+      g_assert_not_reached ();
+      break;
+  }
+
+  return TRUE;
+}
+
+gboolean
+gsk_contour_dash (const GskContour   *contour,
+                  GskStroke          *stroke,
+                  float               tolerance,
+                  GskPathForeachFunc  func,
+                  gpointer            user_data)
+{
+  GskPathDash self = {
+    .offset = 0,
+    .dash = stroke->dash,
+    .n_dash = stroke->n_dash,
+    .dash_length = stroke->dash_length,
+    .dash_offset = stroke->dash_offset,
+    .tolerance = tolerance,
+    .func = func,
+    .user_data = user_data
+  };
+  gboolean is_closed = gsk_contour_get_flags (contour) & GSK_PATH_CLOSED ? TRUE : FALSE;
+
+  self.first_dash_behavior = is_closed ? SKIP : NORMAL;
+  if (!gsk_contour_foreach (contour, tolerance, gsk_path_dash_foreach, &self))
+    return FALSE;
+
+  if (is_closed)
+    {
+      if (self.first_dash_behavior == NORMAL)
+        self.first_dash_behavior = ONLY;
+      else
+        self.first_dash_behavior = NORMAL;
+      self.needs_move_to = !self.on;
+      if (!gsk_contour_foreach (contour, tolerance, gsk_path_dash_foreach, &self) &&
+          self.first_dash_behavior != DONE)
+        return FALSE;
+    }
+
+  return TRUE;
+}
+
+gboolean
+gsk_path_dash (GskPath            *path,
+               GskStroke          *stroke,
+               float               tolerance,
+               GskPathForeachFunc  func,
+               gpointer            user_data)
+{
+  gsize i;
+
+  /* Dashing disabled, no need to do any work */
+  if (stroke->dash_length <= 0)
+    return gsk_path_foreach (path, -1, func, user_data);
+
+  for (i = 0; i < gsk_path_get_n_contours (path); i++)
+    {
+      if (!gsk_contour_dash (gsk_path_get_contour (path, i), stroke, tolerance, func, user_data))
+        return FALSE;
+    }
+
+  return TRUE;
+}
+
@@ -0,0 +1,50 @@
+/*
+ * Copyright © 2020 Benjamin Otte
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Benjamin Otte <otte@gnome.org>
+ */
+
+
+#ifndef __GSK_PATH_DASH_PRIVATE_H__
+#define __GSK_PATH_DASH_PRIVATE_H__
+
+#include <gsk/gskpath.h>
+
+G_BEGIN_DECLS
+
+GDK_AVAILABLE_IN_ALL
+gboolean                gsk_path_dash                           (GskPath                *path,
+                                                                 GskStroke              *stroke,
+                                                                 float                   tolerance,
+                                                                 GskPathForeachFunc      func,
+                                                                 gpointer                user_data);
+
+#ifdef GTK_COMPILATION
+
+#include "gskcontourprivate.h"
+
+gboolean                gsk_contour_dash                        (const GskContour       *contour,
+                                                                 GskStroke              *stroke,
+                                                                 float                   tolerance,
+                                                                 GskPathForeachFunc      func,
+                                                                 gpointer                user_data);
+
+#endif /* GTK_COMPILATION */
+
+G_END_DECLS
+
+#endif /* __GSK_PATH_DASH_PRIVATE_H__ */
+
@@ -0,0 +1,677 @@
+/*
+ * Copyright © 2020 Benjamin Otte
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Benjamin Otte <otte@gnome.org>
+ */
+
+#include "config.h"
+
+#include "gskpathmeasure.h"
+#include "gskpathbuilder.h"
+
+#include "gskpathbuilder.h"
+#include "gskpathprivate.h"
+
+/**
+ * GskPathMeasure:
+ *
+ * `GskPathMeasure` is an object that allows measuring operations
+ * on `GskPath` objects, to determine quantities like the arc
+ * length of the path, its curvature, or closest points.
+ *
+ * These operations are useful when implementing animations.
+ */
+
+typedef struct _GskContourMeasure GskContourMeasure;
+
+struct _GskContourMeasure
+{
+  float length;
+  gpointer contour_data;
+};
+
+struct _GskPathMeasure
+{
+  /*< private >*/
+  guint ref_count;
+
+  GskPath *path;
+  float tolerance;
+
+  gsize first;
+  gsize last;
+
+  float length;
+  gsize n_contours;
+  GskContourMeasure measures[];
+};
+
+G_DEFINE_BOXED_TYPE (GskPathMeasure, gsk_path_measure,
+                     gsk_path_measure_ref,
+                     gsk_path_measure_unref)
+
+/**
+ * gsk_path_measure_new:
+ * @path: the path to measure
+ *
+ * Creates a measure object for the given @path with a
+ * default tolerance.
+ *
+ * Returns: a new `GskPathMeasure` representing @path
+ **/
+GskPathMeasure *
+gsk_path_measure_new (GskPath *path)
+{
+  return gsk_path_measure_new_with_tolerance (path, GSK_PATH_TOLERANCE_DEFAULT);
+}
+
+/**
+ * gsk_path_measure_new_with_tolerance:
+ * @path: the path to measure
+ * @tolerance: the tolerance for measuring operations
+ *
+ * Creates a measure object for the given @path and @tolerance.
+ *
+ * Returns: a new `GskPathMeasure` representing @path
+ **/
+GskPathMeasure *
+gsk_path_measure_new_with_tolerance (GskPath *path,
+                                     float    tolerance)
+{
+  GskPathMeasure *self;
+  gsize i, n_contours;
+
+  g_return_val_if_fail (path != NULL, NULL);
+  g_return_val_if_fail (tolerance > 0, NULL);
+
+  n_contours = gsk_path_get_n_contours (path);
+
+  self = g_malloc0 (sizeof (GskPathMeasure) + n_contours * sizeof (GskContourMeasure));
+
+  self->ref_count = 1;
+  self->path = gsk_path_ref (path);
+  self->tolerance = tolerance;
+  self->n_contours = n_contours;
+  self->first = 0;
+  self->last = n_contours;
+
+  for (i = 0; i < n_contours; i++)
+    {
+      self->measures[i].contour_data = gsk_contour_init_measure (gsk_path_get_contour (path, i),
+                                                                 self->tolerance,
+                                                                 &self->measures[i].length);
+      self->length += self->measures[i].length;
+    }
+
+  return self;
+}
+
+/**
+ * gsk_path_measure_ref:
+ * @self: a `GskPathMeasure`
+ *
+ * Increases the reference count of a `GskPathMeasure` by one.
+ *
+ * Returns: the passed in `GskPathMeasure`.
+ **/
+GskPathMeasure *
+gsk_path_measure_ref (GskPathMeasure *self)
+{
+  g_return_val_if_fail (self != NULL, NULL);
+
+  self->ref_count++;
+
+  return self;
+}
+
+/**
+ * gsk_path_measure_unref:
+ * @self: a `GskPathMeasure`
+ *
+ * Decreases the reference count of a `GskPathMeasure` by one.
+ *
+ * If the resulting reference count is zero, frees the object.
+ **/
+void
+gsk_path_measure_unref (GskPathMeasure *self)
+{
+  gsize i;
+
+  g_return_if_fail (self != NULL);
+  g_return_if_fail (self->ref_count > 0);
+
+  self->ref_count--;
+  if (self->ref_count > 0)
+    return;
+
+  for (i = 0; i < self->n_contours; i++)
+    {
+      gsk_contour_free_measure (gsk_path_get_contour (self->path, i),
+                                self->measures[i].contour_data);
+    }
+
+  gsk_path_unref (self->path);
+  g_free (self);
+}
+
+/**
+ * gsk_path_measure_get_path:
+ * @self: a `GskPathMeasure`
+ *
+ * Returns the path that the measure was created for.
+ *
+ * Returns: (transfer none): the path of @self
+ */
+GskPath *
+gsk_path_measure_get_path (GskPathMeasure *self)
+{
+  g_return_val_if_fail (self != NULL, NULL);
+
+  return self->path;
+}
+
+/**
+ * gsk_path_measure_get_tolerance:
+ * @self: a `GskPathMeasure`
+ *
+ * Returns the tolerance that the measure was created with.
+ *
+ * Returns: the tolerance of @self
+ */
+float
+gsk_path_measure_get_tolerance (GskPathMeasure *self)
+{
+  g_return_val_if_fail (self != NULL, 0.f);
+
+  return self->tolerance;
+}
+
+/**
+ * gsk_path_measure_get_n_contours:
+ * @self: a `GskPathMeasure`
+ *
+ * Returns the number of contours in the path being measured.
+ *
+ * The returned value is independent of whether @self if restricted
+ * or not.
+ *
+ * Returns: The number of contours
+ **/
+gsize
+gsk_path_measure_get_n_contours (GskPathMeasure *self)
+{
+  g_return_val_if_fail (self != NULL, 0);
+
+  return self->n_contours;
+}
+
+/**
+ * gsk_path_measure_restrict_to_contour:
+ * @self: a `GskPathMeasure`
+ * @contour: contour to restrict to or (gsize) -1 for using the
+ *   whole path
+ *
+ * Restricts all functions on the path to just the given @contour.
+ *
+ * If @contour >= gsk_path_measure_get_n_contours() - so in
+ * particular when it is set to -1 - the whole path will be used.
+ **/
+void
+gsk_path_measure_restrict_to_contour (GskPathMeasure *self,
+                                      gsize           contour)
+{
+  if (contour >= self->n_contours)
+    {
+      /* use the whole path */
+      self->first = 0;
+      self->last = self->n_contours;
+    }
+  else
+    {
+      /* use just one contour */
+      self->first = contour;
+      self->last = contour + 1;
+    }
+
+  self->length = 0;
+  for (gsize i = self->first; i < self->last; i++)
+    {
+      self->length += self->measures[i].length;
+    }
+}
+
+/**
+ * gsk_path_measure_get_length:
+ * @self: a `GskPathMeasure`
+ *
+ * Gets the length of the path being measured.
+ *
+ * The length is cached, so this function does not do any work.
+ *
+ * Returns: The length of the path measured by @self
+ **/
+float
+gsk_path_measure_get_length (GskPathMeasure *self)
+{
+  g_return_val_if_fail (self != NULL, 0);
+
+  return self->length;
+}
+
+/**
+ * gsk_path_measure_is_closed:
+ * @self: a `GskPathMeasure`
+ *
+ * Returns if the path being measured represents a single closed
+ * contour.
+ *
+ * Returns: %TRUE if the current path is closed
+ **/
+gboolean
+gsk_path_measure_is_closed (GskPathMeasure *self)
+{
+  const GskContour *contour;
+
+  g_return_val_if_fail (self != NULL, FALSE);
+
+  /* XXX: is the empty path closed? Currently it's not */
+  if (self->last - self->first != 1)
+    return FALSE;
+
+  contour = gsk_path_get_contour (self->path, self->first);
+  return gsk_contour_get_flags (contour) & GSK_PATH_CLOSED ? TRUE : FALSE;
+}
+
+static float
+gsk_path_measure_clamp_distance (GskPathMeasure *self,
+                                 float           distance)
+{
+  if (isnan (distance))
+    return 0;
+
+  return CLAMP (distance, 0, self->length);
+}
+
+/**
+ * gsk_path_measure_get_point:
+ * @self: a `GskPathMeasure`
+ * @distance: distance into the path
+ * @pos: (optional) (out caller-allocates): The coordinates
+ *   of the position at @distance
+ * @tangent: (optional) (out caller-allocates): The tangent
+ *   to the position at @distance
+ *
+ * Calculates the coordinates and tangent of the point @distance
+ * units into the path. The value will be clamped to the length
+ * of the path.
+ *
+ * If the point is a discontinuous edge in the path, the returned
+ * point and tangent will describe the line starting at that point
+ * going forward.
+ *
+ * If @self describes an empty path, the returned point will be
+ * set to `(0, 0)` and the tangent will be the x axis or `(1, 0)`.
+ **/
+void
+gsk_path_measure_get_point (GskPathMeasure   *self,
+                            float             distance,
+                            graphene_point_t *pos,
+                            graphene_vec2_t  *tangent)
+{
+  gsize i;
+
+  g_return_if_fail (self != NULL);
+
+  if (pos == NULL && tangent == NULL)
+    return;
+
+  distance = gsk_path_measure_clamp_distance (self, distance);
+
+  for (i = self->first; i < self->last; i++)
+    {
+      if (distance < self->measures[i].length)
+        break;
+
+      distance -= self->measures[i].length;
+    }
+
+  /* weird corner cases */
+  if (i == self->last)
+    {
+      /* the empty path goes here */
+      if (self->first == self->last)
+        {
+          if (pos)
+            graphene_point_init (pos, 0.f, 0.f);
+          if (tangent)
+            graphene_vec2_init (tangent, 1.f, 0.f);
+          return;
+        }
+      /* rounding errors can make this happen */
+      i = self->last - 1;
+      distance = self->measures[i].length;
+    }
+
+  gsk_contour_get_point (gsk_path_get_contour (self->path, i),
+                         self->measures[i].contour_data,
+                         distance,
+                         pos,
+                         tangent);
+}
+
+/**
+ * gsk_path_measure_get_curvature:
+ * @self: a `GskPathMeasure`
+ * @distance: distance into the path
+ * @center: (optional) (out caller-allocates): The center
+ *   of the osculating circle at the point
+ *
+ * Calculates the curvature at the point @distance units into
+ * the path.
+ *
+ * Optionally, returns the center of the osculating circle as well.
+ *
+ * If the curvature is infinite (at line segments), or does
+ * not exist (at sharp turns), zero is returned, and @center
+ * is not modified.
+ *
+ * Returns: The curvature of the path at the given point
+ */
+float
+gsk_path_measure_get_curvature (GskPathMeasure   *self,
+                                float             distance,
+                                graphene_point_t *center)
+{
+  gsize i;
+
+  g_return_val_if_fail (self != NULL, 0);
+
+  distance = gsk_path_measure_clamp_distance (self, distance);
+
+  for (i = self->first; i < self->last; i++)
+    {
+      if (distance < self->measures[i].length)
+        break;
+
+      distance -= self->measures[i].length;
+    }
+
+  /* weird corner cases */
+  if (i == self->last)
+    {
+      /* the empty path goes here */
+      if (self->first == self->last)
+        return 0;
+
+      /* rounding errors can make this happen */
+      i = self->last - 1;
+      distance = self->measures[i].length;
+    }
+
+  return gsk_contour_get_curvature (gsk_path_get_contour (self->path, i),
+                                    self->measures[i].contour_data,
+                                    distance,
+                                    center);
+}
+
+/**
+ * gsk_path_measure_get_closest_point:
+ * @self: a `GskPathMeasure`
+ * @point: the point to find the closest point to
+ * @out_pos: (optional) (out caller-allocates): return location
+ *   for the closest point
+ *
+ * Gets the point on the path that is closest to @point.
+ *
+ * If the path being measured is empty, return 0 and set
+ * @out_pos to (0, 0).
+ *
+ * This is a simpler and slower version of
+ * [method@Gsk.PathMeasure.get_closest_point_full].
+ * Use that one if you need more control.
+ *
+ * Returns: The offset into the path of the closest point
+ **/
+float
+gsk_path_measure_get_closest_point (GskPathMeasure         *self,
+                                    const graphene_point_t *point,
+                                    graphene_point_t       *out_pos)
+{
+  float result;
+
+  g_return_val_if_fail (self != NULL, 0.0f);
+
+  if (gsk_path_measure_get_closest_point_full (self,
+                                               point,
+                                               INFINITY,
+                                               NULL,
+                                               out_pos,
+                                               &result,
+                                               NULL))
+    return result;
+
+  if (out_pos)
+    *out_pos = GRAPHENE_POINT_INIT (0, 0);
+
+  return 0;
+
+}
+
+/**
+ * gsk_path_measure_get_closest_point_full:
+ * @self: a `GskPathMeasure`
+ * @point: the point to find the closest point to
+ * @threshold: The maximum allowed distance between the path and @point.
+ *   Use INFINITY to look for any point.
+ * @out_distance: (optional) (out caller-allocates): The
+ *   distance between the found closest point on the path and the given
+ *   @point.
+ * @out_pos: (optional) (out caller-allocates): return location
+ *   for the closest point
+ * @out_offset: (optional) (out caller-allocates): The offset into
+ *   the path of the found point
+ * @out_tangent: (optional) (out caller-allocates): return location for
+ *   the tangent at the closest point
+ *
+ * Gets the point on the path that is closest to @point. If no point on
+ * path is closer to @point than @threshold, return %FALSE.
+ *
+ * Returns: %TRUE if a point was found, %FALSE otherwise.
+ **/
+gboolean
+gsk_path_measure_get_closest_point_full (GskPathMeasure         *self,
+                                         const graphene_point_t *point,
+                                         float                   threshold,
+                                         float                  *out_distance,
+                                         graphene_point_t       *out_pos,
+                                         float                  *out_offset,
+                                         graphene_vec2_t        *out_tangent)
+{
+  gboolean result;
+  gsize i;
+  float distance, length;
+
+  g_return_val_if_fail (self != NULL, FALSE);
+  g_return_val_if_fail (point != NULL, FALSE);
+
+  result = FALSE;
+  length = 0;
+
+  for (i = self->first; i < self->last; i++)
+    {
+      if (gsk_contour_get_closest_point (gsk_path_get_contour (self->path, i),
+                                         self->measures[i].contour_data,
+                                         self->tolerance,
+                                         point,
+                                         threshold,
+                                         &distance,
+                                         out_pos,
+                                         out_offset,
+                                         out_tangent))
+        {
+          result = TRUE;
+          if (out_offset)
+            *out_offset += length;
+
+          if (distance < self->tolerance)
+            break;
+          threshold = distance - self->tolerance;
+        }
+
+      length += self->measures[i].length;
+    }
+
+  if (result && out_distance)
+    *out_distance = distance;
+
+  return result;
+}
+
+/**
+ * gsk_path_measure_in_fill:
+ * @self: a #GskPathMeasure
+ * @point: the point to test
+ * @fill_rule: the fill rule to follow
+ *
+ * Returns whether the given point is inside the area that would be
+ * affected if the path of @self was filled according to @fill_rule.
+ *
+ * Returns: %TRUE if @point is inside
+ */
+gboolean
+gsk_path_measure_in_fill (GskPathMeasure   *self,
+                          graphene_point_t *point,
+                          GskFillRule       fill_rule)
+{
+  int winding = 0;
+  gboolean on_edge = FALSE;
+  int i;
+
+  for (i = self->first; i < self->last; i++)
+    {
+      winding += gsk_contour_get_winding (gsk_path_get_contour (self->path, i),
+                                          self->measures[i].contour_data,
+                                          point,
+                                          &on_edge);
+      if (on_edge)
+        return TRUE;
+    }
+
+  switch (fill_rule)
+    {
+    case GSK_FILL_RULE_EVEN_ODD:
+      return winding & 1;
+    case GSK_FILL_RULE_WINDING:
+      return winding != 0;
+    default:
+      g_assert_not_reached ();
+    }
+}
+
+static void
+gsk_path_builder_add_segment_chunk (GskPathBuilder *self,
+                                    GskPathMeasure *measure,
+                                    gboolean        emit_move_to,
+                                    float           start,
+                                    float           end)
+{
+  g_assert (start < end);
+
+  for (gsize i = measure->first; i < measure->last; i++)
+    {
+      if (measure->measures[i].length < start)
+        {
+          start -= measure->measures[i].length;
+          end -= measure->measures[i].length;
+        }
+      else if (start > 0 || end < measure->measures[i].length)
+        {
+          float len = MIN (end, measure->measures[i].length);
+          gsk_contour_add_segment (gsk_path_get_contour (measure->path, i),
+                                   self,
+                                   measure->measures[i].contour_data,
+                                   emit_move_to,
+                                   start,
+                                   len);
+          end -= len;
+          start = 0;
+          if (end <= 0)
+            break;
+        }
+      else
+        {
+          end -= measure->measures[i].length;
+          gsk_path_builder_add_contour (self, gsk_contour_dup (gsk_path_get_contour (measure->path, i)));
+        }
+      emit_move_to = TRUE;
+    }
+}
+
+/**
+ * gsk_path_builder_add_segment:
+ * @builder: a `GskPathBuilder`
+ * @measure: the `GskPathMeasure` to take the segment to
+ * @start: start distance into the path
+ * @end: end distance into the path
+ *
+ * Adds to @builder the segment of @measure from @start to @end.
+ *
+ * The distances are given relative to the length of @measure's path,
+ * from 0 for the beginning of the path to [method@Gsk.PathMeasure.get_length]
+ * for the end of the path. The values will be clamped to that range.
+ *
+ * If @start >= @end after clamping, the path will first add the segment
+ * from @start to the end of the path, and then add the segment from
+ * the beginning to @end. If the path is closed, these segments will
+ * be connected.
+ **/
+void
+gsk_path_builder_add_segment (GskPathBuilder *builder,
+                              GskPathMeasure *measure,
+                              float           start,
+                              float           end)
+{
+  g_return_if_fail (builder != NULL);
+  g_return_if_fail (measure != NULL);
+
+  start = gsk_path_measure_clamp_distance (measure, start);
+  end = gsk_path_measure_clamp_distance (measure, end);
+
+  if (start < end)
+    {
+      gsk_path_builder_add_segment_chunk (builder, measure, TRUE, start, end);
+    }
+  else
+    {
+      /* If the path is closed, we can connect the 2 subpaths. */
+      gboolean closed = gsk_path_measure_is_closed (measure);
+      gboolean need_move_to = !closed;
+
+      if (start < measure->length)
+        gsk_path_builder_add_segment_chunk (builder, measure,
+                                            TRUE,
+                                            start, measure->length);
+      else
+        need_move_to = TRUE;
+
+      if (end > 0)
+        gsk_path_builder_add_segment_chunk (builder, measure,
+                                            need_move_to,
+                                            0, end);
+      if (start == end && closed)
+        gsk_path_builder_close (builder);
+    }
+}
@@ -0,0 +1,92 @@
+/*
+ * Copyright © 2020 Benjamin Otte
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Benjamin Otte <otte@gnome.org>
+ */
+
+#ifndef __GSK_PATH_MEASURE_H__
+#define __GSK_PATH_MEASURE_H__
+
+#if !defined (__GSK_H_INSIDE__) && !defined (GTK_COMPILATION)
+#error "Only <gsk/gsk.h> can be included directly."
+#endif
+
+
+#include <gsk/gskpath.h>
+
+G_BEGIN_DECLS
+
+#define GSK_TYPE_PATH_MEASURE (gsk_path_measure_get_type ())
+
+GDK_AVAILABLE_IN_ALL
+GType                   gsk_path_measure_get_type               (void) G_GNUC_CONST;
+GDK_AVAILABLE_IN_ALL
+GskPathMeasure *        gsk_path_measure_new                    (GskPath                *path);
+GDK_AVAILABLE_IN_ALL
+GskPathMeasure *        gsk_path_measure_new_with_tolerance     (GskPath                *path,
+                                                                 float                   tolerance);
+
+GDK_AVAILABLE_IN_ALL
+GskPathMeasure *        gsk_path_measure_ref                    (GskPathMeasure         *self);
+GDK_AVAILABLE_IN_ALL
+void                    gsk_path_measure_unref                  (GskPathMeasure         *self);
+
+GDK_AVAILABLE_IN_ALL
+GskPath *               gsk_path_measure_get_path               (GskPathMeasure         *self) G_GNUC_PURE;
+GDK_AVAILABLE_IN_ALL
+float                   gsk_path_measure_get_tolerance          (GskPathMeasure         *self) G_GNUC_PURE;
+GDK_AVAILABLE_IN_ALL
+gsize                   gsk_path_measure_get_n_contours         (GskPathMeasure         *self) G_GNUC_PURE;
+
+GDK_AVAILABLE_IN_ALL
+void                    gsk_path_measure_restrict_to_contour    (GskPathMeasure         *self,
+                                                                 gsize                   contour);
+
+GDK_AVAILABLE_IN_ALL
+float                   gsk_path_measure_get_length             (GskPathMeasure         *self);
+GDK_AVAILABLE_IN_ALL
+gboolean                gsk_path_measure_is_closed              (GskPathMeasure         *self);
+GDK_AVAILABLE_IN_ALL
+void                    gsk_path_measure_get_point              (GskPathMeasure         *self,
+                                                                 float                   distance,
+                                                                 graphene_point_t       *pos,
+                                                                 graphene_vec2_t        *tangent);
+GDK_AVAILABLE_IN_ALL
+float                   gsk_path_measure_get_curvature          (GskPathMeasure         *self,
+                                                                 float                   distance,
+                                                                 graphene_point_t       *center);
+
+GDK_AVAILABLE_IN_ALL
+float                   gsk_path_measure_get_closest_point      (GskPathMeasure         *self,
+                                                                 const graphene_point_t *point,
+                                                                 graphene_point_t       *out_pos);
+GDK_AVAILABLE_IN_ALL
+gboolean                gsk_path_measure_get_closest_point_full (GskPathMeasure         *self,
+                                                                 const graphene_point_t *point,
+                                                                 float                   threshold,
+                                                                 float                  *out_distance,
+                                                                 graphene_point_t       *out_pos,
+                                                                 float                  *out_offset,
+                                                                 graphene_vec2_t        *out_tangent);
+
+GDK_AVAILABLE_IN_ALL
+gboolean                gsk_path_measure_in_fill                (GskPathMeasure         *self,
+                                                                 graphene_point_t       *point,
+                                                                 GskFillRule             fill_rule);
+
+G_END_DECLS
+
+#endif /* __GSK_PATH_MEASURE_H__ */
--- a/Show More
+++ b/Show More