gizmo: Set the name

This helps with debugging.
widget: Improve warning messages
2019-05-04 18:20:27 +00:00 · 2019-05-04 18:20:20 +00:00 · 2019-05-04 09:54:08 +00:00 · 2019-05-04 15:09:35 +05:30 · 2019-05-04 02:12:02 +00:00 · 2019-05-04 01:26:45 +00:00
464 changed files with 26557 additions and 20318 deletions
@@ -13,7 +13,7 @@ stages:
    - subprojects/pango/

 fedora-x86_64:
-  image: registry.gitlab.gnome.org/gnome/gtk/master:v3
+  image: registry.gitlab.gnome.org/gnome/gtk/master:v5
  stage: build
  script:
    - bash -x ./.gitlab-ci/test-docker.sh
@@ -26,6 +26,8 @@ fedora-x86_64:
    paths:
      - "${CI_PROJECT_DIR}/_build/meson-logs"
      - "${CI_PROJECT_DIR}/_build/report.xml"
+      - "${CI_PROJECT_DIR}/_build/report.html"
+      - "${CI_PROJECT_DIR}/_build/testsuite/reftests/output/*.png"
  cache:
    key: "$CI_JOB_NAME"
    <<: *cache-paths
@@ -99,7 +101,7 @@ flatpak-master:icon-browser:
  <<: *flatpak-master

 pages:
-  image: registry.gitlab.gnome.org/gnome/gtk/master:v3
+  image: registry.gitlab.gnome.org/gnome/gtk/master:v4
  stage: deploy 
  script:
    - meson -Ddocumentation=true _build .
@@ -11,6 +11,7 @@ RUN dnf -y install \
    ccache \
    colord-devel \
    cups-devel \
+    dejavu-sans-mono-fonts \
    desktop-file-utils \
    elfutils-libelf-devel \
    fribidi-devel \
@@ -72,6 +73,8 @@ RUN dnf -y install \

 RUN pip3 install meson==0.50.0

+RUN pip3 install jinja2
+
 ARG HOST_USER_ID=5555
 ENV HOST_USER_ID ${HOST_USER_ID}
 RUN useradd -u $HOST_USER_ID -ms /bin/bash user
@@ -0,0 +1,363 @@
+#!/usr/bin/env python3
+
+# Turns a Mason testlog.json file into an HTML report
+#
+# Copyright 2019  GNOME Foundation
+#
+# SPDX-License-Identifier: LGPL-2.1-or-later
+#
+# Original author: Emmanuele Bassi
+
+import argparse
+import datetime
+import json
+import os
+import sys
+from jinja2 import Template
+
+REPORT_TEMPLATE = '''
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <title>{{ report.project_name }} Test Report</title>
+  <meta charset="utf-8" />
+  <style type="text/css">
+body {
+  background: white;
+  color: #333;
+  font-family: 'Cantarell', sans-serif;
+}
+
+h1 {
+  color: #333333;
+  font-size: 1.9em;
+  font-weight: normal;
+  margin-bottom: 1em;
+  border-bottom: 1px solid #333333;
+}
+
+header {
+  position: fixed;
+  padding-bottom: 12px;
+  margin-bottom: 24px;
+  background: rgba(255, 255, 255, 0.85);
+  box-shadow: 0 0 1px rgba(0, 0, 0, 0.15);
+  z-index: 500;
+  left: 0;
+  top: 0;
+  width: 100%;
+  color: rgba(0, 0, 0, 0.3);
+  transform: translateY(0px);
+  transition: .2s background-color, color;
+  box-sizing: border-box;
+  display: block;
+  visibility: visible;
+  text-align: center;
+}
+
+article {
+  padding-top: 200px;
+  margin: 2em;
+}
+
+div.report-meta {
+  width: auto;
+  border: 1px solid #ccc;
+  padding: .5em 2em;
+  color: #3c3c3c;
+}
+
+span.result {
+  font-weight: bold;
+}
+
+span.pass {
+  color: rgb(51, 209, 122);
+}
+
+span.skip {
+  color: rgb(255, 163, 72);
+}
+
+span.fail {
+  color: rgb(224, 27, 36);
+}
+
+span.xfail {
+  color: rgb(163, 71, 186);
+}
+
+div.result {
+  border-top: 1px solid #c0c0c0;
+  padding-top: 1em;
+  padding-bottom: 1em;
+  width: 100%;
+}
+
+div.result h4 {
+  border-bottom: 1px solid #c0c0c0;
+  margin-bottom: 0.7em;
+}
+
+pre {
+  color: #fafafa;
+  background-color: black;
+  border-radius: 6px;
+  box-shadow: 0px 5px 8px 0px rgba(0, 0, 0, 0.25);
+  font-family: monospace;
+  line-height: 1.2em;
+  border: none;
+  padding: 10px 1em;
+  font-size: 0.9em;
+  overflow: auto;
+  white-space: pre;
+  word-break: normal;
+  word-wrap: normal;
+}
+
+ul.passed li {
+  display: inline;
+}
+
+ul.passed li:after {
+  content: ",";
+}
+
+ul.passed li:last-child:after {
+  content: "";
+}
+
+ul.images {
+  padding-bottom: 1em;
+}
+
+ul.images li {
+  display: inline;
+}
+  </style>
+</head>
+<body>
+  <header>
+    <h1>{{ report.project_name }} :: Test Reports</h1>
+    <div class="report-meta">
+      <p><strong>Branch:</strong> {{ report.branch_name }}</p>
+      <p><strong>Date:</strong> <time datetime="{{ report.date.isoformat() }}">{{ report.locale_date }}</time></p>
+      {% if report.job_id %}<p><strong>Job ID:</strong> {{ report.job_id }}</p>{% endif %}
+    </div>
+  </header>
+
+  <article>
+    <section>
+      <div class="summary">
+        <h3>Summary</h3>
+        <ul>
+          <li><strong>Total units:</strong> {{ report.total_units }}</li>
+          <li><strong>Passed:</strong> {{ report.total_successes }}</li>
+          <li><strong>Failed:</strong> {{ report.total_failures }}</li>
+        </ul>
+      </div>
+    </section>
+
+    {% for suite_result in report.results_list %}
+    <section>
+      <div class="result">
+        <h3>Suite: {{ suite_result.suite_name }}</h3>
+        <ul>
+          <li><strong>Units:</strong> {{ suite_result.n_units }}</li>
+          <li><strong>Passed:</strong> {{ suite_result.n_successes }}</li>
+          <li><strong>Failed:</strong> {{ suite_result.n_failures }}</li>
+        </ul>
+
+        <div class="successes">
+          <h4>Passed</h4>
+          <ul class="passed">
+            {% for success in suite_result.successes if success.result == 'OK' %}
+            <li>{{ success.name }} - result: <span class="result pass">{{ success.result }}</li>
+            {% else %}
+            <li>None</li>
+            {% endfor %}
+          </ul>
+
+          <h4>Skipped</h4>
+          <ul>
+            {% for success in suite_result.successes if success.result == 'SKIP' %}
+            <li>{{ success.name }} - result: <span class="result skip">{{ success.result }}</li>
+            {% else %}
+            <li>None</li>
+            {% endfor %}
+          </ul>
+
+          <h4>Expected failures</h4>
+          <ul>
+          {% for success in suite_result.successes if success.result == 'EXPECTEDFAIL' %}
+            <li>{{ success.name }} - result: <span class="result xfail">{{ success.result }}</span><br/>
+            {% if success.stdout %}
+              Output: <pre>{{ success.stdout }}</pre>
+            {% endif %}
+            {% if success.image_data is defined %}
+              <ul class="images">
+                <li><img alt="ref" src="{{ success.image_data.ref }}" /></li>
+                <li><img alt="out" src="{{ success.image_data.out }}" /></li>
+                <li><img alt="diff" src="{{ success.image_data.diff }}" /></li>
+              </ul>
+            {% endif %}
+            </li>
+          {% else %}
+            <li>None</li>
+          {% endfor %}
+          </ul>
+        </div>
+
+        <div class="failures">
+          <h4>Failed</h4>
+          <ul class="failed">
+            {% for failure in suite_result.failures if failure.result == 'FAIL' %}
+            <li>{{ failure.name }} - result: <span class="result fail">{{ failure.result }}</span><br/>
+              {% if failure.stdout %}
+              Output: <pre>{{ failure.stdout }}</pre>
+              {% endif %}
+              {% if failure.image_data is defined %}
+              <ul class="images">
+                <li><img alt="ref" src="{{ failure.image_data.ref }}" /></li>
+                <li><img alt="out" src="{{ failure.image_data.out }}" /></li>
+                <li><img alt="diff" src="{{ failure.image_data.diff }}" /></li>
+              </ul>
+              {% endif %}
+            </li>
+            {% else %}
+            <li>None</li>
+            {% endfor %}
+          </ul>
+
+          <h4>Timed out</h4>
+          <ul class="failed">
+            {% for failure in suite_result.failures if failure.result == 'TIMEOUT' %}
+            <li>{{ failure.name }} - result: <span class="result fail">{{ failure.result }}</span><br/>
+              {% if failure.stdout %}
+              Output: <pre>{{ failure.stdout }}</pre>
+              {% endif %}
+            </li>
+            {% else %}
+            <li>None</li>
+            {% endfor %}
+          </ul>
+        </div>
+
+      </div>
+    </section>
+    {% endfor %}
+
+  </article>
+</body>
+</html>
+'''
+
+aparser = argparse.ArgumentParser(description='Turns a Meson test log into an HTML report')
+aparser.add_argument('--project-name', metavar='NAME',
+                     help='The project name',
+                     default='Unknown')
+aparser.add_argument('--job-id', metavar='ID',
+                     help='The job ID for the report',
+                     default=None)
+aparser.add_argument('--branch', metavar='NAME',
+                     help='Branch of the project being tested',
+                     default='master')
+aparser.add_argument('--output', metavar='FILE',
+                     help='The output HTML file, stdout by default',
+                     type=argparse.FileType('w', encoding='UTF-8'),
+                     default=sys.stdout)
+aparser.add_argument('--reftest-suite', metavar='NAME',
+                     help='The name of the reftests suite',
+                     default='reftest')
+aparser.add_argument('--reftest-output-dir', metavar='DIR',
+                     help='The output directory for reftests data',
+                     default=None)
+aparser.add_argument('infile', metavar='FILE',
+                     help='The input testlog.json, stdin by default',
+                     type=argparse.FileType('r', encoding='UTF-8'),
+                     default=sys.stdin)
+
+args = aparser.parse_args()
+
+outfile = args.output
+
+suites = {}
+for line in args.infile:
+    data = json.loads(line)
+    (full_suite, unit_name) = data['name'].split(' / ')
+    (project_name, suite_name) = full_suite.split(':')
+
+    unit = {
+        'project-name': project_name,
+        'suite': suite_name,
+        'name': unit_name,
+        'duration': data['duration'],
+        'returncode': data['returncode'],
+        'result': data['result'],
+        'stdout': data['stdout'],
+    }
+
+    if args.reftest_output_dir is not None and suite_name == args.reftest_suite:
+        filename = unit_name.split(' ')[1]
+        basename = os.path.splitext(filename)[0]
+
+        image_data = {
+            'ref': os.path.join(args.reftest_output_dir, '{}.ref.png'.format(basename)),
+            'out': os.path.join(args.reftest_output_dir, '{}.out.png'.format(basename)),
+            'diff': os.path.join(args.reftest_output_dir, '{}.diff.png'.format(basename)),
+        }
+
+        unit['image_data'] = image_data
+
+    units = suites.setdefault(full_suite, [])
+    units.append(unit)
+
+report = {}
+report['date'] = datetime.datetime.utcnow()
+report['locale_date'] = report['date'].strftime("%c")
+report['project_name'] = args.project_name
+report['job_id'] = args.job_id
+report['branch_name'] = args.branch
+report['total_successes'] = 0
+report['total_failures'] = 0
+report['total_units'] = 0
+report['results_list'] = []
+
+for name, units in suites.items():
+    (project_name, suite_name) = name.split(':')
+    print('Processing {} suite {}:'.format(project_name, suite_name))
+
+    def if_failed(unit):
+        if unit['result'] in ['FAIL', 'TIMEOUT']:
+            return True
+        return False
+
+    def if_succeded(unit):
+        if unit['result'] in ['OK', 'EXPECTEDFAIL', 'SKIP']:
+            return True
+        return False
+
+    successes = list(filter(if_succeded, units))
+    failures = list(filter(if_failed, units))
+
+    n_units = len(units)
+    n_successes = len(successes)
+    n_failures = len(failures)
+
+    report['total_units'] += n_units
+    report['total_successes'] += n_successes
+    report['total_failures'] += n_failures
+    print(' - {}: {} total, {} pass, {} fail'.format(suite_name, n_units, n_successes, n_failures))
+
+    suite_report = {
+        'suite_name': suite_name,
+        'n_units': n_units,
+        'successes': successes,
+        'n_successes': n_successes,
+        'failures': failures,
+        'n_failures': n_failures,
+    }
+    report['results_list'].append(suite_report)
+
+template = Template(REPORT_TEMPLATE)
+outfile.write(template.render({'report': report}))
@@ -1,5 +1,13 @@
 #!/usr/bin/env python3

+# Turns a Meson testlog.json file into a JUnit XML report
+#
+# Copyright 2019  GNOME Foundation
+#
+# SPDX-License-Identifier: LGPL-2.1-or-later
+#
+# Original author: Emmanuele Bassi
+
 import argparse
 import datetime
 import json
@@ -19,11 +27,11 @@ aparser.add_argument('--branch', metavar='NAME',
                     default='master')
 aparser.add_argument('--output', metavar='FILE',
                     help='The output file, stdout by default',
-                     type=argparse.FileType('w'),
+                     type=argparse.FileType('w', encoding='UTF-8'),
                     default=sys.stdout)
 aparser.add_argument('infile', metavar='FILE',
                     help='The input testlog.json, stdin by default',
-                     type=argparse.FileType('r'),
+                     type=argparse.FileType('r', encoding='UTF-8'),
                     default=sys.stdin)

 args = aparser.parse_args()
@@ -2,7 +2,7 @@

 set -e

-TAG="registry.gitlab.gnome.org/gnome/gtk/master:v3"
+TAG="registry.gitlab.gnome.org/gnome/gtk/master:v4"

 sudo docker build --build-arg HOST_USER_ID="$UID" --tag "${TAG}" \
    --file "Dockerfile" .
@@ -16,6 +16,7 @@ meson \
        -Dwayland-backend=true \
        -Dbroadway-backend=true \
        -Dvulkan=yes \
+        --werror \
        _build $srcdir
 unset CCACHE_DISABLE

@@ -32,17 +33,23 @@ xvfb-run -a -s "-screen 0 1024x768x24" \
        --print-errorlogs \
        --suite=gtk \
        --no-suite=gtk:gsk \
-        --no-suite=gtk:reftest \
        --no-suite=gtk:a11y

 # Save the exit code
 exit_code=$?

-# We always want to run the report generator
+# We always want to run the report generators
 $srcdir/.gitlab-ci/meson-junit-report.py \
        --project-name=gtk \
        --job-id="${CI_JOB_NAME}" \
        --output=report.xml \
        meson-logs/testlog.json

+$srcdir/.gitlab-ci/meson-html-report.py \
+        --project-name=GTK \
+        --job-id="${CI_JOB_NAME}" \
+        --reftest-output-dir="testsuite/reftests/output" \
+        --output=report.html \
+        meson-logs/testlog.json
+
 exit $exit_code
@@ -26,7 +26,7 @@
 - Which version of GTK you are using
 - What operating system and version
  - For Linux, which distribution
- - If you built GTK+ yourself, the list of options used to configure the build
+ - If you built GTK yourself, the list of options used to configure the build
 -->

 ## Additional information
@@ -16,7 +16,7 @@
 - Which version of GTK you are using
 - What operating system and version
  - for Linux, which distribution
- - If you built GTK+ yourself, the list of options used to configure the build
+ - If you built GTK yourself, the list of options used to configure the build
 -->

 ## Warnings
@@ -12,13 +12,13 @@ Overview of Changes in GTK+ 3.96.0
 * The use of global coordinates in GDK apis has been reduced. This
  work is still incomplete

-* Events have been simplified and are just used for input
- - expose events have been replaced by a GdkSurface::render signal
- - configure events have been replaced by a GdkSurface::size-changed signal
- - map events have been replaced by a GdkSurface::mapped property
- - gdk_event_handler_set has been replaced by a GdkSurface::event signal
- - key events no longer contain a string
- - events on unmapped widgets are ignored
+* Events have been simplified and are used just for input
+  - expose events have been replaced by a GdkSurface::render signal
+  - configure events have been replaced by a GdkSurface::size-changed signal
+  - map events have been replaced by a GdkSurface::mapped property
+  - gdk_event_handler_set has been replaced by a GdkSurface::event signal
+  - key events no longer contain a string
+  - events on unmapped widgets are ignored

 * Warping the pointer is no longer supported

@@ -36,11 +36,11 @@ Overview of Changes in GTK+ 3.96.0

 * A number of list models have been introduced, for internal use
  and as public api:
- - GtkMapListModel
- - GtkSliceListModel
- - GtkSortListModel
- - GtkSelectionModel
- - GtkSingleSelection
+  - GtkMapListModel
+  - GtkSliceListModel
+  - GtkSortListModel
+  - GtkSelectionModel
+  - GtkSingleSelection

 * Support for tabular menus and combo boxes has been dropped

@@ -70,9 +70,13 @@ Overview of Changes in GTK+ 3.96.0

 * GtkWidget can now use a GtkLayoutManager for size allocation.
  Layout managers can optionally use layout children holding layout
-  properties. GtkBinLayout, GtkBoxLayout, GtkGridLayout, GtkFixedLayout
-  and GtkCustomLayout are currently available, more layout manager
-  implementations will appear in the future.
+  properties. A number of layout managers are available:
+  - GtkBinLayout
+  - GtkBoxLayout
+  - GtkGridLayout
+  - GtkFixedLayout
+  - GtkCustomLayout
+  More layout manager implementations will appear in the future.

 * GtkAssistant, GtkStack and GtkNotebook now have publicly
  accessible page objects for their children. The page objects
@@ -82,8 +86,11 @@ Overview of Changes in GTK+ 3.96.0
  child properties have been removed, converted to regular properties,
  moved to layout properties or moved to child meta objects.

+* GtkListBox has gained a ::show-separators property that gets
+  translated into a CSS style class.
+
 * A number of X11-specific GtkWindow and GdkSurface apis have been
-  removed
+  removed or changed to backend APIs.

 * GtkBuilder can specify object-valued properties inline.

@@ -13,19 +13,22 @@ show_parsing_error (GtkCssProvider *provider,
                    const GError   *error,
                    GtkTextBuffer  *buffer)
 {
+  const GtkCssLocation *start_location, *end_location;
  GtkTextIter start, end;
  const char *tag_name;

+  start_location = gtk_css_section_get_start_location (section);
  gtk_text_buffer_get_iter_at_line_index (buffer,
                                          &start,
-                                          gtk_css_section_get_start_line (section),
-                                          gtk_css_section_get_start_position (section));
+                                          start_location->lines,
+                                          start_location->line_bytes);
+  end_location = gtk_css_section_get_end_location (section);
  gtk_text_buffer_get_iter_at_line_index (buffer,
                                          &end,
-                                          gtk_css_section_get_end_line (section),
-                                          gtk_css_section_get_end_position (section));
+                                          end_location->lines,
+                                          end_location->line_bytes);

-  if (g_error_matches (error, GTK_CSS_PROVIDER_ERROR, GTK_CSS_PROVIDER_ERROR_DEPRECATED))
+  if (error->domain == GTK_CSS_PARSER_WARNING)
    tag_name = "warning";
  else
    tag_name = "error";
@@ -13,19 +13,23 @@ show_parsing_error (GtkCssProvider *provider,
                    const GError   *error,
                    GtkTextBuffer  *buffer)
 {
+  const GtkCssLocation *start_location, *end_location;
  GtkTextIter start, end;
  const char *tag_name;

+  start_location = gtk_css_section_get_start_location (section);
  gtk_text_buffer_get_iter_at_line_index (buffer,
                                          &start,
-                                          gtk_css_section_get_start_line (section),
-                                          gtk_css_section_get_start_position (section));
+                                          start_location->lines,
+                                          start_location->line_bytes);
+  end_location = gtk_css_section_get_end_location (section);
  gtk_text_buffer_get_iter_at_line_index (buffer,
                                          &end,
-                                          gtk_css_section_get_end_line (section),
-                                          gtk_css_section_get_end_position (section));
+                                          end_location->lines,
+                                          end_location->line_bytes);

-  if (g_error_matches (error, GTK_CSS_PROVIDER_ERROR, GTK_CSS_PROVIDER_ERROR_DEPRECATED))
+
+  if (error->domain == GTK_CSS_PARSER_WARNING)
    tag_name = "warning";
  else
    tag_name = "error";
@@ -12,19 +12,23 @@ show_parsing_error (GtkCssProvider *provider,
                    const GError   *error,
                    GtkTextBuffer  *buffer)
 {
+  const GtkCssLocation *start_location, *end_location;
  GtkTextIter start, end;
  const char *tag_name;

+  start_location = gtk_css_section_get_start_location (section);
  gtk_text_buffer_get_iter_at_line_index (buffer,
                                          &start,
-                                          gtk_css_section_get_start_line (section),
-                                          gtk_css_section_get_start_position (section));
+                                          start_location->lines,
+                                          start_location->line_bytes);
+  end_location = gtk_css_section_get_end_location (section);
  gtk_text_buffer_get_iter_at_line_index (buffer,
                                          &end,
-                                          gtk_css_section_get_end_line (section),
-                                          gtk_css_section_get_end_position (section));
+                                          end_location->lines,
+                                          end_location->line_bytes);

-  if (g_error_matches (error, GTK_CSS_PROVIDER_ERROR, GTK_CSS_PROVIDER_ERROR_DEPRECATED))
+
+  if (error->domain == GTK_CSS_PARSER_WARNING)
    tag_name = "warning";
  else
    tag_name = "error";
@@ -11,19 +11,22 @@ show_parsing_error (GtkCssProvider *provider,
                    const GError   *error,
                    GtkTextBuffer  *buffer)
 {
+  const GtkCssLocation *start_location, *end_location;
  GtkTextIter start, end;
  const char *tag_name;

+  start_location = gtk_css_section_get_start_location (section);
  gtk_text_buffer_get_iter_at_line_index (buffer,
                                          &start,
-                                          gtk_css_section_get_start_line (section),
-                                          gtk_css_section_get_start_position (section));
+                                          start_location->lines,
+                                          start_location->line_bytes);
+  end_location = gtk_css_section_get_end_location (section);
  gtk_text_buffer_get_iter_at_line_index (buffer,
                                          &end,
-                                          gtk_css_section_get_end_line (section),
-                                          gtk_css_section_get_end_position (section));
+                                          end_location->lines,
+                                          end_location->line_bytes);

-  if (g_error_matches (error, GTK_CSS_PROVIDER_ERROR, GTK_CSS_PROVIDER_ERROR_DEPRECATED))
+  if (error->domain == GTK_CSS_PARSER_WARNING)
    tag_name = "warning";
  else
    tag_name = "error";
@@ -243,7 +243,7 @@ pressed_cb (GtkGesture *gesture,
  GtkWidget *child;

  widget = gtk_event_controller_get_widget (GTK_EVENT_CONTROLLER (gesture));
-  child = gtk_widget_pick (widget, x, y);
+  child = gtk_widget_pick (widget, x, y, GTK_PICK_DEFAULT);

  if (gtk_gesture_single_get_current_button (GTK_GESTURE_SINGLE (gesture)) == GDK_BUTTON_SECONDARY)
    {
@@ -320,7 +320,7 @@ released_cb (GtkGesture *gesture,
  GtkWidget *child;

  widget = gtk_event_controller_get_widget (GTK_EVENT_CONTROLLER (gesture));
-  child = gtk_widget_pick (widget, x, y);
+  child = gtk_widget_pick (widget, x, y, 0);

  if (gtk_gesture_single_get_current_button (GTK_GESTURE_SINGLE (gesture)) == GDK_BUTTON_PRIMARY)
    {
@@ -31,6 +31,7 @@ do_expander (GtkWidget *do_widget)
  GtkWidget *toplevel;
  GtkWidget *area;
  GtkWidget *expander;
+  GtkWidget *label;
  GtkWidget *sw;
  GtkWidget *tv;
  GtkTextBuffer *buffer;
@@ -50,13 +51,19 @@ do_expander (GtkWidget *do_widget)

      area = gtk_message_dialog_get_message_area (GTK_MESSAGE_DIALOG (window));

+      label = gtk_widget_get_last_child (area);
+      gtk_label_set_line_wrap (GTK_LABEL (label), FALSE);
+      gtk_widget_set_vexpand (label, FALSE);
+
      expander = gtk_expander_new ("Details:");
+      gtk_widget_set_vexpand (expander, TRUE);
      sw = gtk_scrolled_window_new (NULL, NULL);
      gtk_scrolled_window_set_min_content_height (GTK_SCROLLED_WINDOW (sw), 100);
      gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (sw), GTK_SHADOW_IN);
      gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw),
                                      GTK_POLICY_NEVER,
                                      GTK_POLICY_AUTOMATIC);
+      gtk_scrolled_window_set_propagate_natural_height (GTK_SCROLLED_WINDOW (sw), TRUE);

      tv = gtk_text_view_new ();
      buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (tv));
@@ -495,7 +495,11 @@ update_script_combo (void)
  gboolean have_active = FALSE;

  lang = gtk_font_chooser_get_language (GTK_FONT_CHOOSER (font));
+
+  G_GNUC_BEGIN_IGNORE_DEPRECATIONS
  active = hb_ot_tag_from_language (hb_language_from_string (lang, -1));
+  G_GNUC_END_IGNORE_DEPRECATIONS
+
  g_free (lang);

  store = gtk_list_store_new (4, G_TYPE_STRING, G_TYPE_UINT, G_TYPE_UINT, G_TYPE_UINT);
@@ -45,22 +45,43 @@ activate_about (GSimpleAction *action,
    "The GTK Team",
    NULL
  };
+  char *version;
+  GString *s;
+
+  s = g_string_new ("");
+
+  g_string_append (s, "System libraries\n");
+  g_string_append_printf (s, "\tGLib\t%d.%d.%d\n",
+                          glib_major_version,
+                          glib_minor_version,
+                          glib_micro_version);
+  g_string_append_printf (s, "\tGTK\t%d.%d.%d\n",
+                          gtk_get_major_version (),
+                          gtk_get_minor_version (),
+                          gtk_get_micro_version ());
+  g_string_append_printf (s, "\nA link can apppear here: <http://www.gtk.org>");
+
+  version = g_strdup_printf ("%s\nRunning against GTK %d.%d.%d",
+                             PACKAGE_VERSION,
+                             gtk_get_major_version (),
+                             gtk_get_minor_version (),
+                             gtk_get_micro_version ());

  gtk_show_about_dialog (GTK_WINDOW (gtk_application_get_active_window (app)),
                         "program-name", "GTK Demo",
-                         "version", g_strdup_printf ("%s,\nRunning against GTK %d.%d.%d",
-                                                     PACKAGE_VERSION,
-                                                     gtk_get_major_version (),
-                                                     gtk_get_minor_version (),
-                                                     gtk_get_micro_version ()),
-                         "copyright", "(C) 1997-2013 The GTK Team",
+                         "version", version,
+                         "copyright", "© 1997—2019 The GTK Team",
                         "license-type", GTK_LICENSE_LGPL_2_1,
                         "website", "http://www.gtk.org",
                         "comments", "Program to demonstrate GTK widgets",
                         "authors", authors,
                         "logo-icon-name", "org.gtk.Demo4",
                         "title", "About GTK Demo",
+                         "system-information", s->str,
                         NULL);
+
+  g_string_free (s, TRUE);
+  g_free (version);
 }

 static void
@@ -84,6 +105,14 @@ activate_quit (GSimpleAction *action,
    }
 }

+static void
+activate_inspector (GSimpleAction *action,
+                    GVariant      *parameter,
+                    gpointer       user_data)
+{
+  gtk_window_set_interactive_debugging (TRUE);
+}
+
 static void
 window_closed_cb (GtkWidget *window, gpointer data)
 {
@@ -1200,6 +1229,7 @@ main (int argc, char **argv)
  static GActionEntry app_entries[] = {
    { "about", activate_about, NULL, NULL, NULL },
    { "quit", activate_quit, NULL, NULL, NULL },
+    { "inspector", activate_inspector, NULL, NULL, NULL },
  };

  /* Most code in gtk-demo is intended to be exemplary, but not
@@ -1,5 +1,17 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface>
+  <menu id="gear_menu">
+    <section>
+      <item>
+        <attribute name="label" translatable="yes">_Inspector</attribute>
+        <attribute name="action">app.inspector</attribute>
+      </item>
+      <item>
+        <attribute name="label" translatable="yes">_About GTK Demo</attribute>
+        <attribute name="action">app.about</attribute>
+      </item>
+    </section>
+  </menu>
  <object class="GtkTreeStore" id="treestore">
    <columns>
      <column type="gchararray"/>
@@ -35,6 +47,13 @@
            </child>
          </object>
        </child>
+        <child type="end">
+          <object class="GtkMenuButton" id="gear_menu_button">
+            <property name="valign">center</property>
+            <property name="menu-model">gear_menu</property>
+            <property name="icon-name">open-menu-symbolic</property>
+          </object>
+        </child>
      </object>
    </child>
    <child>
@@ -70,12 +70,6 @@ change_orientation (GtkWidget *button,
  parent = gtk_widget_get_parent (menubar);
  orientation = gtk_orientable_get_orientation (GTK_ORIENTABLE (parent));
  gtk_orientable_set_orientation (GTK_ORIENTABLE (parent), 1 - orientation);
-
-  if (orientation == GTK_ORIENTATION_VERTICAL)
-    g_object_set (menubar, "pack-direction", GTK_PACK_DIRECTION_TTB, NULL);
-  else
-    g_object_set (menubar, "pack-direction", GTK_PACK_DIRECTION_LTR, NULL);
-
 }

 static GtkWidget *window = NULL;
@@ -107,51 +101,41 @@ do_menus (GtkWidget *do_widget)

      box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
      gtk_container_add (GTK_CONTAINER (window), box);
-      gtk_widget_show (box);

      box1 = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
      gtk_container_add (GTK_CONTAINER (box), box1);
-      gtk_widget_show (box1);

      menubar = gtk_menu_bar_new ();
      gtk_widget_set_hexpand (menubar, TRUE);
      gtk_container_add (GTK_CONTAINER (box1), menubar);
-      gtk_widget_show (menubar);

      menu = create_menu (2);

      menuitem = gtk_menu_item_new_with_label ("test\nline2");
      gtk_menu_item_set_submenu (GTK_MENU_ITEM (menuitem), menu);
      gtk_menu_shell_append (GTK_MENU_SHELL (menubar), menuitem);
-      gtk_widget_show (menuitem);

      menuitem = gtk_menu_item_new_with_label ("foo");
      gtk_menu_item_set_submenu (GTK_MENU_ITEM (menuitem), create_menu (3));
      gtk_menu_shell_append (GTK_MENU_SHELL (menubar), menuitem);
-      gtk_widget_show (menuitem);

      menuitem = gtk_menu_item_new_with_label ("bar");
      gtk_menu_item_set_submenu (GTK_MENU_ITEM (menuitem), create_menu (4));
      gtk_menu_shell_append (GTK_MENU_SHELL (menubar), menuitem);
-      gtk_widget_show (menuitem);

      box2 = gtk_box_new (GTK_ORIENTATION_VERTICAL, 10);
      gtk_container_add (GTK_CONTAINER (box1), box2);
-      gtk_widget_show (box2);

      button = gtk_button_new_with_label ("Flip");
      g_signal_connect (button, "clicked",
                        G_CALLBACK (change_orientation), menubar);
      gtk_container_add (GTK_CONTAINER (box2), button);
-      gtk_widget_show (button);

      button = gtk_button_new_with_label ("Close");
      g_signal_connect_swapped (button, "clicked",
                                G_CALLBACK(gtk_widget_destroy), window);
      gtk_container_add (GTK_CONTAINER (box2), button);
-      gtk_widget_set_can_default (button, TRUE);
-      gtk_widget_grab_default (button);
-      gtk_widget_show (button);
+      gtk_window_set_default_widget (GTK_WINDOW (window), button);
    }

  if (!gtk_widget_get_visible (window))
@@ -57,7 +57,7 @@ do_overlay (GtkWidget *do_widget)

      vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 10);
      gtk_overlay_add_overlay (GTK_OVERLAY (overlay), vbox);
-      gtk_widget_set_can_pick (vbox, FALSE);
+      gtk_widget_set_can_target (vbox, FALSE);
      gtk_widget_set_halign (vbox, GTK_ALIGN_CENTER);
      gtk_widget_set_valign (vbox, GTK_ALIGN_CENTER);

@@ -66,13 +66,13 @@ do_overlay2 (GtkWidget *do_widget)

      image = gtk_picture_new_for_resource ("/overlay2/decor1.png");
      gtk_overlay_add_overlay (GTK_OVERLAY (overlay), image);
-      gtk_widget_set_can_pick (image, FALSE);
+      gtk_widget_set_can_target (image, FALSE);
      gtk_widget_set_halign (image, GTK_ALIGN_START);
      gtk_widget_set_valign (image, GTK_ALIGN_START);

      image = gtk_picture_new_for_resource ("/overlay2/decor2.png");
      gtk_overlay_add_overlay (GTK_OVERLAY (overlay), image);
-      gtk_widget_set_can_pick (image, FALSE);
+      gtk_widget_set_can_target (image, FALSE);
      gtk_widget_set_halign (image, GTK_ALIGN_END);
      gtk_widget_set_valign (image, GTK_ALIGN_END);

@@ -76,8 +76,7 @@ do_password_entry (GtkWidget *do_widget)
      gtk_widget_set_sensitive (button, FALSE);
      gtk_header_bar_pack_end (GTK_HEADER_BAR (header), button);

-      gtk_widget_set_can_default (button, TRUE);
-      gtk_window_set_default (GTK_WINDOW (window), button);
+      gtk_window_set_default_widget (GTK_WINDOW (window), button);
    }

  if (!gtk_widget_get_visible (window))
@@ -228,7 +228,7 @@ puzzle_button_pressed (GtkGestureMultiPress *gesture,
  int l, t, i;
  int pos;

-  child = gtk_widget_pick (grid, x, y);
+  child = gtk_widget_pick (grid, x, y, GTK_PICK_DEFAULT);

  if (!child)
    {
@@ -99,8 +99,7 @@ do_tagged_entry (GtkWidget *do_widget)
      g_signal_connect_swapped (button, "clicked", G_CALLBACK (gtk_widget_destroy), window);
      gtk_header_bar_pack_end (GTK_HEADER_BAR (header), button);

-      gtk_widget_set_can_default (button, TRUE);
-      gtk_window_set_default (GTK_WINDOW (window), button);
+      gtk_window_set_default_widget (GTK_WINDOW (window), button);
    }

  if (!gtk_widget_get_visible (window))
@@ -205,6 +205,7 @@ add_context (IconBrowserWindow *win,
  g_hash_table_insert (win->contexts, c->id, c);

  row = gtk_label_new (name);
+  gtk_label_set_xalign (GTK_LABEL (row), 0);
  g_object_set_data (G_OBJECT (row), "context", c);
  gtk_widget_show (row);
  g_object_set (row, "margin", 10, NULL);
@@ -121,6 +121,7 @@
    <property name="hide-on-close">1</property>
    <child internal-child="content_area">
      <object class="GtkBox">
+        <property name="orientation">vertical</property>
        <child>
          <object class="GtkGrid">
            <property name="margin">10</property>
@@ -227,7 +227,7 @@ activate_about (GSimpleAction *action,
  gtk_show_about_dialog (GTK_WINDOW (gtk_application_get_active_window (app)),
                         "program-name", "GTK Widget Factory",
                         "version", version,
-                         "copyright", "(C) 1997-2013 The GTK Team",
+                         "copyright", "© 1997—2019 The GTK Team",
                         "license-type", GTK_LICENSE_LGPL_2_1,
                         "website", "http://www.gtk.org",
                         "comments", "Program to demonstrate GTK themes and widgets",
@@ -262,6 +262,14 @@ activate_quit (GSimpleAction *action,
    }
 }

+static void
+activate_inspector (GSimpleAction *action,
+                    GVariant      *parameter,
+                    gpointer       user_data)
+{
+  gtk_window_set_interactive_debugging (TRUE);
+}
+
 static void
 spin_value_changed (GtkAdjustment *adjustment, GtkWidget *label)
 {
@@ -1935,6 +1943,7 @@ main (int argc, char *argv[])
  static GActionEntry app_entries[] = {
    { "about", activate_about, NULL, NULL, NULL },
    { "quit", activate_quit, NULL, NULL, NULL },
+    { "inspector", activate_inspector, NULL, NULL, NULL },
    { "main", NULL, "s", "'steak'", NULL },
    { "wine", NULL, NULL, "false", NULL },
    { "beer", NULL, NULL, "false", NULL },
@@ -16,6 +16,10 @@
      </item>
    </section>
    <section>
+      <item>
+        <attribute name="label" translatable="yes">_Inspector</attribute>
+        <attribute name="action">app.inspector</attribute>
+      </item>
      <item>
        <attribute name="label" translatable="yes">_Keyboard Shortcuts</attribute>
        <attribute name="action">win.show-help-overlay</attribute>
@@ -2876,6 +2880,17 @@ microphone-sensitivity-medium-symbolic</property>
                                    <child>
                                      <object class="GtkNotebook">
                                        <property name="show-border">0</property>
+                                        <child type="action-end">
+                                          <object class="GtkMenuButton">
+                                            <property name="valign">center</property>
+                                            <property name="popover">notebook_info_popover2</property>
+                                            <property name="icon-name">emblem-important-symbolic</property>
+                                            <property name="relief">none</property>
+                                            <style>
+                                              <class name="circular"/>
+                                            </style>
+                                          </object>
+                                        </child>
                                        <child>
                                          <object class="GtkNotebookPage">
                                            <property name="tab-expand">1</property>
@@ -3139,6 +3154,7 @@ bad things might happen.</property>
    <property name="use-header-bar">1</property>
    <property name="title" translatable="yes">Zelda</property>
    <property name="hide-on-close">1</property>
+    <property name="default-widget">act_action_dialog</property>
    <child internal-child="content_area">
      <object class="GtkBox">
        <child>
@@ -3160,8 +3176,6 @@ bad things might happen.</property>
    </child>
    <child type="action">
      <object class="GtkButton" id="act_action_dialog">
-        <property name="can-default">1</property>
-        <property name="has-default">1</property>
        <property name="label" translatable="yes">_Act</property>
        <property name="use-underline">1</property>
      </object>
@@ -3299,6 +3313,7 @@ bad things might happen.</property>
    <property name="use-header-bar">1</property>
    <property name="title" translatable="yes">Choose one</property>
    <property name="hide-on-close">1</property>
+    <property name="default-widget">select_selection_dialog</property>
    <child internal-child="content_area">
      <object class="GtkBox">
        <child>
@@ -3320,8 +3335,6 @@ bad things might happen.</property>
    </child>
    <child type="action">
      <object class="GtkButton" id="select_selection_dialog">
-        <property name="can-default">1</property>
-        <property name="has-default">1</property>
        <property name="label" translatable="yes">_Select</property>
        <property name="use-underline">1</property>
      </object>
@@ -3382,6 +3395,7 @@ bad things might happen.</property>
            <layout>
              <property name="left-attach">1</property>
              <property name="top-attach">1</property>
+              <property name="column-span">2</property>
            </layout>
          </object>
        </child>
@@ -3394,22 +3408,52 @@ bad things might happen.</property>
            <layout>
              <property name="left-attach">1</property>
              <property name="top-attach">0</property>
+              <property name="column-span">2</property>
+            </layout>
+          </object>
+        </child>
+        <child>
+          <object class="GtkExpander">
+            <child type="label">
+              <object class="GtkLabel">
+                <property name="label">Extra Info</property>
+              </object>
+            </child>
+            <child>
+              <object class="GtkEntry">
+                <property name="placeholder-text">Tell me anything…</property>
+              </object>
+            </child>
+            <layout>
+              <property name="left-attach">1</property>
+              <property name="top-attach">2</property>
+              <property name="column-span">2</property>
+            </layout>
+          </object>
+        </child>
+        <child>
+          <object class="GtkMenuButton">
+            <property name="halign">end</property>
+            <property name="icon-name">emblem-system-symbolic</property>
+            <property name="menu-model">gear_menu</property>
+            <layout>
+              <property name="left-attach">1</property>
+              <property name="top-attach">3</property>
            </layout>
          </object>
        </child>
        <child>
          <object class="GtkButton" id="open_popover_button">
-            <property name="halign">end</property>
+            <property name="halign">fill</property>
            <property name="label">_Open</property>
            <property name="use-underline">1</property>
            <property name="sensitive">0</property>
-            <property name="can-default">1</property>
            <style>
              <class name="suggested-action"/>
            </style>
            <layout>
-              <property name="left-attach">1</property>
-              <property name="top-attach">2</property>
+              <property name="left-attach">2</property>
+              <property name="top-attach">3</property>
            </layout>
          </object>
        </child>
@@ -3435,8 +3479,9 @@ bad things might happen.</property>
    </widgets>
  </object>
  <object class="GtkPopover" id="notebook_info_popover">
+    <property name="modal">0</property>
    <child>
-      <object class="GtkLabel" id="notebook_info_label">
+      <object class="GtkLabel">
        <property name="label">No updates at this time</property>
        <accessibility>
          <role type="static"/>
@@ -3444,4 +3489,39 @@ bad things might happen.</property>
      </object>
    </child>
  </object>
+  <object class="GtkPopover" id="notebook_info_popover3">
+    <property name="modal">0</property>
+    <child>
+      <object class="GtkLabel">
+        <property name="label">You're in too deep!</property>
+        <accessibility>
+          <role type="static"/>
+        </accessibility>
+      </object>
+    </child>
+  </object>
+  <object class="GtkPopover" id="notebook_info_popover2">
+    <property name="modal">0</property>
+    <child>
+      <object class="GtkBox">
+        <property name="orientation">horizontal</property>
+        <child>
+          <object class="GtkLabel">
+            <property name="label">Hidden gems:</property>
+          </object>
+        </child>
+        <child>
+          <object class="GtkMenuButton">
+            <property name="valign">center</property>
+            <property name="popover">notebook_info_popover3</property>
+            <property name="icon-name">emblem-important-symbolic</property>
+            <property name="relief">none</property>
+            <style>
+              <class name="circular"/>
+            </style>
+          </object>
+        </child>
+      </object>
+    </child>
+  </object>
 </interface>
@@ -231,10 +231,9 @@ gdk_surface_get_scale_factor
 gdk_surface_set_opaque_region
 gdk_surface_create_gl_context
 gdk_surface_create_vulkan_context
+gdk_surface_create_cairo_context

 <SUBSECTION>
-gdk_surface_invalidate_rect
-gdk_surface_invalidate_region
 gdk_surface_queue_expose
 gdk_surface_freeze_updates
 gdk_surface_thaw_updates
@@ -262,9 +261,6 @@ gdk_surface_get_modal_hint
 gdk_surface_set_type_hint
 gdk_surface_get_type_hint
 gdk_surface_set_shadow_width
-gdk_surface_set_skip_taskbar_hint
-gdk_surface_set_skip_pager_hint
-gdk_surface_set_urgency_hint
 gdk_surface_get_position
 gdk_surface_get_root_origin
 gdk_surface_get_frame_extents
@@ -280,8 +276,6 @@ gdk_surface_peek_children
 gdk_surface_set_icon_name
 gdk_surface_set_transient_for
 gdk_surface_set_startup_id
-gdk_surface_set_group
-gdk_surface_get_group
 gdk_surface_set_decorations
 gdk_surface_get_decorations
 GdkWMDecoration
@@ -995,7 +989,6 @@ gdk_wayland_device_get_wl_seat
 gdk_wayland_display_get_wl_compositor
 gdk_wayland_display_get_wl_display
 gdk_wayland_display_query_registry
-gdk_wayland_surface_new_subsurface
 gdk_wayland_surface_get_wl_surface
 GdkWaylandSurfaceExported
 gdk_wayland_surface_export_handle
@@ -62,6 +62,7 @@ gsk_outset_shadow_node_get_spread
 gsk_outset_shadow_node_get_blur_radius
 gsk_cairo_node_new
 gsk_cairo_node_get_draw_context
+gsk_cairo_node_peek_surface
 gsk_container_node_new
 gsk_container_node_get_n_children
 gsk_container_node_get_child
@@ -88,6 +89,7 @@ GskShadow
 gsk_shadow_node_new
 gsk_shadow_node_peek_shadow
 gsk_shadow_node_get_n_shadows
+gsk_shadow_node_get_child
 GskBlendMode
 gsk_blend_node_new
 gsk_blend_node_get_bottom_child
@@ -103,6 +105,7 @@ gsk_text_node_peek_glyphs
 gsk_text_node_peek_color
 gsk_text_node_get_x
 gsk_text_node_get_y
+gsk_text_node_get_num_glyphs
 gsk_blur_node_new
 gsk_blur_node_get_child
 gsk_blur_node_get_radius
@@ -152,6 +155,8 @@ gsk_transform_get_category
 <SUBSECTION>
 gsk_transform_print
 gsk_transform_to_string
+gsk_transform_parse
+<SUBSECTION>
 gsk_transform_to_matrix
 gsk_transform_to_2d
 gsk_transform_to_affine
@@ -160,6 +165,7 @@ gsk_transform_to_translate
 gsk_transform_transform
 gsk_transform_invert
 gsk_transform_matrix
+gsk_transform_matrix_with_category
 gsk_transform_translate
 gsk_transform_translate_3d
 gsk_transform_rotate
@@ -0,0 +1,373 @@
+<?xml version="1.0"?>
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
+               "http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd" [
+]>
+<refentry id="chap-actions">
+<refmeta>
+<refentrytitle>The GTK Action Model</refentrytitle>
+<manvolnum>3</manvolnum>
+<refmiscinfo>GTK Library</refmiscinfo>
+</refmeta>
+
+<refnamediv>
+<refname>The GTK Action Model</refname>
+<refpurpose>
+    How actions are used in GTK
+</refpurpose>
+</refnamediv>
+
+
+  <refsect1 id="actions-overview">
+    <title>Overview of actions in GTK</title>
+
+  <para>
+   This chapter describes in detail how GTK uses actions to connect
+   activatable UI elements to callbacks. GTK inherits the underlying
+   architecture of GAction and GMenu for describing abstract actions
+   and menus from the GIO library.
+  </para>
+
+  <refsect2>
+    <title>Basics about actions</title>
+
+    <para>
+     A GAction is essentially a way to tell the toolkit about a
+     piece of functionality in your program, and to give it a name.
+   </para>
+
+   <para>
+     Actions are purely functional. They do not contain any
+     presentational information.
+   </para>
+
+   <para>
+     An action has four pieces of information associated with it:
+     <itemizedlist>
+       <listitem><para>
+         a name as an identifier (usually all-lowercase, untranslated
+         English string)
+       </para></listitem>
+       <listitem><para>
+         an enabled flag indicating if the action can be activated or
+         not (like the "sensitive" property on widgets)
+       </para></listitem>
+       <listitem><para>
+         an optional state value, for stateful actions (like a boolean
+         for toggles)
+       </para></listitem>
+       <listitem><para>
+         an optional parameter type, used when activating the action
+       </para></listitem>
+     </itemizedlist>
+   </para>
+
+   <para>
+     An action supports two operations. You can activate it, which
+     requires passing a parameter of the correct type
+     And you can request to change the actions state (for stateful
+     actions) to a new state value of the correct type.
+   </para>
+
+   <para>
+     Here are some rules about an action:
+     <itemizedlist>
+       <listitem><para>
+         the name is immutable (in the sense that it will never
+         change) and it is never %NULL
+       </para></listitem>
+       <listitem><para>
+         the enabled flag can change
+       </para></listitem>
+       <listitem><para>
+         the parameter type is immutable
+       </para></listitem>
+       <listitem><para>
+         the parameter type is optional: it can be %NULL
+       </para></listitem>
+       <listitem><para>
+         if the parameter type is %NULL then action activation must
+         be done without a parameter (ie: a %NULL GVariant pointer)
+       </para></listitem>
+       <listitem><para>
+         if the parameter type is non-%NULL then the parameter must
+         have this type
+       </para></listitem>
+       <listitem><para>
+         the state can change, but it cannot change type
+       </para></listitem>
+       <listitem><para>
+         if the action was stateful when it was created, it will
+         always have a state and it will always have exactly the same
+         type (such as boolean or string)
+       </para></listitem>
+       <listitem><para>
+         if the action was stateless when it was created, it can never
+         have a state
+       </para></listitem>
+       <listitem><para>
+         you can only request state changes on stateful actions and it
+         is only possible to request that the state change to a value
+         of the same type as the existing state
+       </para></listitem>
+     </itemizedlist>
+   </para>
+
+   <para>
+     An action does not have any sort of presentational information
+     such as a label, an icon or a way of creating a widget from it.
+   </para>
+
+   </refsect2>
+
+   <refsect2>
+     <title>Action state and parameters</title>
+
+     <para>
+       Most actions in your application will be stateless actions with
+       no parameters. These typically appear as menu items with no
+       special decoration. An example is "quit".
+     </para>
+
+     <para>
+       Stateful actions are used to represent an action which has a
+       closely-associated state of some kind. A good example is a
+       "fullscreen" action. For this case, you'd expect to see a
+       checkmark next to the menu item when the fullscreen option
+       is active. This is usually called a toggle action, and it has
+       a boolean state. By convention, toggle actions have no parameter
+       type for activation: activating the action always toggles the
+       state.
+     </para>
+
+     <para>
+       Another common case is to have an action representing a
+       enumeration of possible values of a given type (typically
+       string). This is often called a radio action and is usually
+       represented in the user interface with radio buttons or radio
+       menu items, or sometimes a combobox. A good example is
+       "text-justify" with possible values "left", "center", and
+       "right". By convention, these types of actions have a parameter
+       type equal to their state type, and activating them with a
+       particular parameter value is equivalent to changing their
+       state to that value.
+     </para>
+
+     <para>
+       This approach to handling radio buttons is different than many
+       other action systems such as GtkAction. With GAction, there is
+       only one action for "text-justify" and "left", "center" and
+       "right" are possible states on that action. There are not three
+       separate "justify-left", "justify-center" and "justify-right"
+       actions.
+     </para>
+
+     <para>
+       The final common type of action is a stateless action with a
+       parameter. This is typically used for actions like
+       "open-bookmark" where the parameter to the action would be
+       the identifier of the bookmark to open.
+     </para>
+
+     <para>
+       Because some types of actions cannot be invoked without a
+       parameter, it is often important to specify a parameter when
+       referring to the action from a place where it will be invoked
+       (such as from a radio button that sets the state to a particular
+       value or from a menu item that opens a specific bookmark). In
+       these contexts, the value used for the action parameter is
+       typically called the target of the action.
+     </para>
+
+     <para>
+       Even though toggle actions have a state, they do not have a
+       parameter. Therefore, a target value is not needed when
+       referring to them — they will always be toggled on activation.
+     </para>
+
+     <para>
+       Most APIs that allow using a GAction (such as GMenuModel and
+       GtkActionable) allow use of detailed action names. This is a
+       convenient way of specifying an action name and an action target
+       with a single string.
+     </para>
+
+     <para>
+       In the case that the action target is a string with no unusual
+       characters (ie: only alpha-numeric, plus '-' and '.') then you
+       can use a detailed action name of the form "justify::left" to
+       specify the justify action with a target of left.
+     </para>
+
+     <para>
+       In the case that the action target is not a string, or contains
+       unusual characters, you can use the more general format
+       "action-name(5)", where the "5" here is any valid text-format
+       GVariant (ie: a string that can be parsed by g_variant_parse()).
+       Another example is "open-bookmark('http://gnome.org/')".
+     </para>
+
+     <para>
+       You can convert between detailed action names and split-out
+       action names and target values using g_action_parse_detailed_action_name()
+       and g_action_print_detailed_action_name() but usually you will
+       not need to. Most APIs will provide both ways of specifying
+       actions with targets.
+     </para>
+
+   </refsect2>
+
+   <refsect2>
+     <title>Action scopes</title>
+
+     <para>
+       Actions are always scoped to a particular object on which they
+       operate.
+     </para>
+
+     <para>
+       In GTK, actions are typically scoped to either an application
+       or a window, but any widget can have actions associated with it.
+     </para>
+
+     <para>
+       Actions scoped to windows should be the actions that
+       specifically impact that window. These are actions like
+       "fullscreen" and "close", or in the case that a window contains
+       a document, "save" and "print".
+     </para>
+
+     <para>
+       Actions that impact the application as a whole rather than one
+       specific window are scoped to the application. These are actions
+       like "about" and "preferences".
+     </para>
+
+     <para>
+       If a particular action is scoped to a window then it is scoped
+       to a specific window. Another way of saying this: if your
+       application has a "fullscreen" action that applies to windows
+       and it has three windows, then it will have three fullscreen
+       actions: one for each window.
+     </para>
+
+     <para>
+       Having a separate action per-window allows for each window to
+       have a separate state for each instance of the action as well
+       as being able to control the enabled state of the action on a
+       per-window basis.
+     </para>
+
+     <para>
+       Actions are added to their relevant scope (application or
+       window) either using the GActionMap interface, or by using
+       gtk_widget_insert_action_group().
+     </para>
+
+  </refsect2>
+
+  <refsect2>
+    <title>Action groups and action maps</title>
+
+    <para>
+      Actions rarely occurs in isolation. It is common to have groups
+      of related actions, which are represented by instances of the
+      GActionGroup interface.
+    </para>
+
+    <para>
+      Action maps are a variant of action groups that allow to change
+      the name of the action as it is looked up. In GTK, the convention
+      is to add a prefix to the action name to indicate the scope of
+      the actions, such as "app." for the actions with application scope
+      or "win." for those with window scope.
+    </para>
+
+    <para>
+      When referring to actions on a GActionMap only the name of the
+      action itself is used (ie: "quit", not "app.quit"). The
+      "app.quit" form is only used when referring to actions from
+      places like a GMenu or GtkActionable widget where the scope
+      of the action is not already known.
+    </para>
+
+    <para>
+      GtkApplication and GtkApplicationWindow implement the GActionMap
+      interface, so you can just add actions directly to them. For
+      other widgets, use gtk_widget_insert_action_group() to add
+      actions to it.
+    </para>
+
+    <para>
+      If you want to insert several actions at the same time, it is
+      typically faster and easier to use GActionEntry.
+    </para>
+
+  </refsect2>
+
+  <refsect2>
+    <title>Connecting actions to widgets</title>
+
+    <para>
+      Any widget that implements the GtkActionable interface can
+      be connected to an action just by setting the ::action-name
+      property. If the action has a parameter, you will also need
+      to set the ::action-target property.
+      Widgets that implement GtkAction include GtkSwitch, GtkButton,
+      GtkMenuItem and their respective subclasses.
+    </para>
+
+    <para>
+      Another of obtaining widgets that are connected to actions is
+      to create a menu using a GMenu menu model. GMenu provides an
+      abstract way to describe typical menus: nested groups of items
+      where each item can have a label, and icon, and an action.
+    </para>
+
+    <para>
+      Typical uses of GMenu inside GTK are to set up an application
+      menu or menubar with gtk_application_set_app_menu() or
+      gtk_application_set_menubar(). Another, maybe more common use
+      is to create a popover for a menubutton, using
+      gtk_menu_button_set_menu_model().
+    </para>
+
+    <para>
+      Unlike traditional menus, those created from menu models don't
+      have keyboard accelerators associated with menu items. Instead,
+      GtkApplication offers the gtk_application_set_accels_for_action()
+      API to associate keyboard shortcuts with actions.
+    </para>
+  </refsect2>
+
+  <refsect2>
+    <title>Activation</title>
+
+    <para>
+      When a widget with a connected action is activated, GTK finds
+      the action to activate by walking up the widget hierarchy,
+      looking for a matching action, ending up at the GtkApplication.
+    </para>
+  </refsect2>
+
+  <refsect2>
+    <title>Built-in Actions</title>
+
+    <para>
+      GTK uses actions for its own purposes in a number places. These
+      built-in actions can sometimes be activated by applications, and
+      you should avoid naming conflicts with them when creating your
+      own actions.
+      <variablelist>
+        <varlistentry>
+          <term>default.activate</term>
+          <listitem><para>Activates the default widget in a context
+             (typically a GtkWindow, GtkDialog or GtkPopover)
+          </para></listitem>
+        </varlistentry>
+      </variablelist>
+    </para>
+
+  </refsect2>
+
+  </refsect1>
+</refentry>
@@ -12,7 +12,7 @@
 <refnamediv>
 <refname>The GTK Drawing Model</refname>
 <refpurpose>
-    The GTK drawing model in detail
+    How widgets draw
 </refpurpose>
 </refnamediv>

@@ -24,8 +24,9 @@
    <xi:include href="xml/getting_started.xml"/>
    <xi:include href="resources.sgml" />
    <xi:include href="xml/question_index.sgml" />
-    <xi:include href="drawing-model.xml" />
+    <xi:include href="xml/drawing-model.xml" />
    <xi:include href="xml/input-handling.xml" />
+    <xi:include href="xml/actions.xml" />
  </part>

  <part id="gtkobjects">
@@ -362,6 +362,8 @@ gtk_list_box_get_selected_row
 GtkListBoxForeachFunc
 gtk_list_box_selected_foreach
 gtk_list_box_get_selected_rows
+gtk_list_box_set_show_separators
+gtk_list_box_get_show_separators

 gtk_list_box_set_selection_mode
 gtk_list_box_get_selection_mode
@@ -1777,7 +1779,6 @@ GtkMenu
 GtkArrowPlacement
 gtk_menu_new
 gtk_menu_new_from_model
-gtk_menu_set_display
 gtk_menu_reorder_child
 gtk_menu_popup_at_rect
 gtk_menu_popup_at_widget
@@ -1819,11 +1820,6 @@ gtk_menu_get_type
 GtkMenuBar
 gtk_menu_bar_new
 gtk_menu_bar_new_from_model
-GtkPackDirection
-gtk_menu_bar_set_pack_direction
-gtk_menu_bar_get_pack_direction
-gtk_menu_bar_set_child_pack_direction
-gtk_menu_bar_get_child_pack_direction
 <SUBSECTION Standard>
 GTK_MENU_BAR
 GTK_IS_MENU_BAR
@@ -4436,13 +4432,10 @@ gtk_widget_event
 gtk_widget_activate
 gtk_widget_is_focus
 gtk_widget_grab_focus
-gtk_widget_grab_default
 gtk_widget_set_name
 gtk_widget_get_name
 gtk_widget_set_sensitive
 gtk_widget_set_parent
-gtk_widget_set_parent_surface
-gtk_widget_get_parent_surface
 gtk_widget_get_toplevel
 gtk_widget_get_root
 gtk_widget_get_ancestor
@@ -4507,16 +4500,15 @@ gtk_widget_compute_bounds
 gtk_widget_compute_transform
 gtk_widget_compute_point
 gtk_widget_contains
+GtkPickFlags
 gtk_widget_pick
-gtk_widget_get_can_default
-gtk_widget_set_can_default
 gtk_widget_get_can_focus
 gtk_widget_set_can_focus
 gtk_widget_get_focus_on_click
 gtk_widget_set_focus_on_click
 gtk_widget_set_focus_child
-gtk_widget_get_can_pick
-gtk_widget_set_can_pick
+gtk_widget_get_can_target
+gtk_widget_set_can_target
 gtk_widget_get_has_surface
 gtk_widget_set_has_surface
 gtk_widget_get_sensitive
@@ -4542,13 +4534,15 @@ gtk_widget_get_realized
 gtk_widget_get_mapped
 gtk_widget_device_is_shadowed
 gtk_widget_get_modifier_mask
-gtk_widget_insert_action_group
 gtk_widget_get_opacity
 gtk_widget_set_opacity
 gtk_widget_get_overflow
 gtk_widget_set_overflow
+gtk_widget_insert_action_group
 gtk_widget_list_action_prefixes
 gtk_widget_get_action_group
+gtk_widget_activate_action
+gtk_widget_activate_default
 gtk_widget_measure
 gtk_widget_snapshot_child
 gtk_widget_get_next_sibling
@@ -4651,8 +4645,6 @@ gtk_window_set_resizable
 gtk_window_get_resizable
 gtk_window_add_accel_group
 gtk_window_remove_accel_group
-gtk_window_activate_focus
-gtk_window_activate_default
 gtk_window_set_modal
 gtk_window_set_default_size
 gtk_window_set_hide_on_close
@@ -4675,7 +4667,7 @@ gtk_window_propagate_key_event
 gtk_window_get_focus
 gtk_window_set_focus
 gtk_window_get_default_widget
-gtk_window_set_default
+gtk_window_set_default_widget
 gtk_window_present
 gtk_window_present_with_time
 gtk_window_close
@@ -4696,9 +4688,6 @@ gtk_window_set_decorated
 gtk_window_set_deletable
 gtk_window_set_mnemonic_modifier
 gtk_window_set_type_hint
-gtk_window_set_skip_taskbar_hint
-gtk_window_set_skip_pager_hint
-gtk_window_set_urgency_hint
 gtk_window_set_accept_focus
 gtk_window_set_focus_on_map
 gtk_window_set_startup_id
@@ -4715,9 +4704,6 @@ gtk_window_get_title
 gtk_window_get_transient_for
 gtk_window_get_attached_to
 gtk_window_get_type_hint
-gtk_window_get_skip_taskbar_hint
-gtk_window_get_skip_pager_hint
-gtk_window_get_urgency_hint
 gtk_window_get_accept_focus
 gtk_window_get_focus_on_map
 gtk_window_get_group
@@ -5078,27 +5064,28 @@ gtk_border_get_type
 <FILE>gtkcssprovider</FILE>
 <TITLE>GtkCssProvider</TITLE>
 GtkCssProvider
-gtk_css_provider_get_named
+gtk_css_provider_load_named
 gtk_css_provider_load_from_data
 gtk_css_provider_load_from_file
 gtk_css_provider_load_from_path
 gtk_css_provider_load_from_resource
 gtk_css_provider_new
 gtk_css_provider_to_string
-GTK_CSS_PROVIDER_ERROR
-GtkCssProviderError
+GTK_CSS_PARSER_ERROR
+GtkCssParserError
+GtkCssParserWarning
 <SUBSECTION>
+GtkCssLocation
 GtkCssSection
-GtkCssSectionType
-gtk_css_section_get_end_line
-gtk_css_section_get_end_position
-gtk_css_section_get_file
-gtk_css_section_get_parent
-gtk_css_section_get_section_type
-gtk_css_section_get_start_line
-gtk_css_section_get_start_position
+gtk_css_section_new
 gtk_css_section_ref
 gtk_css_section_unref
+gtk_css_section_print
+gtk_css_section_to_string
+gtk_css_section_get_file
+gtk_css_section_get_parent
+gtk_css_section_get_start_location
+gtk_css_section_get_end_location
 <SUBSECTION Standard>
 GTK_TYPE_CSS_PROVIDER
 GTK_CSS_PROVIDER
@@ -4,15 +4,15 @@
 ]>
 <refentry id="chap-input-handling">
 <refmeta>
-<refentrytitle>The GTK Input and Event Handling Model</refentrytitle>
+<refentrytitle>The GTK Input Model</refentrytitle>
 <manvolnum>3</manvolnum>
 <refmiscinfo>GTK Library</refmiscinfo>
 </refmeta>

 <refnamediv>
-<refname>The GTK Input and Event Handling Model</refname>
+<refname>The GTK Input Model</refname>
 <refpurpose>
-    GTK input and event handling in detail
+    input and event handling in detail
 </refpurpose>
 </refnamediv>

@@ -52,13 +52,12 @@
     with any pointing device or keyboard.
    </para>

-    <!-- input events: button, touch, key, motion, etc -->
    <para>
     When a user interacts with an input device (e.g. moves a mouse or presses
     a key on the keyboard), GTK receives events from the windowing system.
-     These are typically directed at a specific window - for pointer events,
-     the window under the pointer (grabs complicate this), for keyboard events,
-     the window with the keyboard focus.
+     These are typically directed at a specific surface - for pointer events,
+     the surface under the pointer (grabs complicate this), for keyboard events,
+     the surface with the keyboard focus.
    </para>
    <para>
     GDK translates these raw windowing system events into #GdkEvents.
@@ -81,9 +80,10 @@
      </simplelist>
    </para>
    <para>
-      When GTK is initialized, it sets up an event handler function with
-      gdk_event_handler_set(), which receives all of these input events
-      (as well as others, for instance window management related events).
+      When GTK creates a GdkSurface, it connects to the ::event signal
+      on it, which receives all of these input events. Surfaces have
+      have signals and properties, e.g. to deal with window management
+      related events.
    </para>
  </refsect2>

@@ -91,8 +91,8 @@
    <title>Event propagation</title>

    <para>
-      For widgets which have a #GdkSurface set, events are received from the
-      windowing system and passed to gtk_main_do_event(). See its documentation
+      The function which initially receives input events on the GTK
+      side is gtk_main_do_event(). See its documentation
      for details of what it does: compression of enter/leave events,
      identification of the widget receiving the event, pushing the event onto a
      stack for gtk_get_current_event(), and propagating the event to the
@@ -120,62 +120,55 @@

    <para>
      An event is propagated to a widget using gtk_propagate_event().
-      Propagation differs between event types: key events (%GDK_KEY_PRESS,
-      %GDK_KEY_RELEASE) are delivered to the top-level #GtkWindow; other events
-      are propagated down and up the widget hierarchy in three phases (see
-      #GtkPropagationPhase).
+      Propagation goes down and up the widget hierarchy in three phases
+      (see #GtkPropagationPhase) towards a target widget.
    </para>

    <para>
-      For key events, the top-level window’s default #GtkWindow::key-press-event
-      and #GtkWindow::key-release-event signal handlers handle mnemonics and
-      accelerators first. Other key presses are then passed to
-      gtk_window_propagate_key_event() which propagates the event upwards from
-      the window’s current focus widget (gtk_window_get_focus()) to the
-      top-level.
+      For key events, the top-level window gets a first shot at activating
+      mnemonics and accelerators. If that does not consume the events,
+      the target widget for event propagation is window's current focus
+      widget (see gtk_window_get_focus()).
    </para>

    <para>
-      For other events, in the first phase (the “capture” phase) the event is
-      delivered to each widget from the top-most (for example, the top-level
+      For pointer events, the target widget is determined by picking
+      the widget at the events coordinates (see gtk_window_pick()).
+    </para>
+
+    <para>In the first phase (the “capture” phase) the event is
+      delivered to each widget from the top-most (the top-level
      #GtkWindow or grab widget) down to the target #GtkWidget.
-      <link linkend="event-controllers-and-gestures">Gestures</link> that are
-      attached with %GTK_PHASE_CAPTURE get a chance to react to the event.
+      <link linkend="event-controllers-and-gestures">Event
+      controllers</link> that are attached with %GTK_PHASE_CAPTURE
+      get a chance to react to the event.
    </para>

    <para>
      After the “capture” phase, the widget that was intended to be the
-      destination of the event will run gestures attached to it with
-      %GTK_PHASE_TARGET. This is known as the “target” phase, and only
-      happens on that widget.
+      destination of the event will run event controllers attached to
+      it with %GTK_PHASE_TARGET. This is known as the “target” phase,
+      and only happens on that widget.
    </para>

    <para>
-      Next, the #GtkWidget::event signal is emitted.
-      Handling these signals was the primary way to handle input in GTK widgets
-      before gestures were introduced. The signal is emitted from
-      the target widget up to the top-level, as part of the “bubble” phase.
+      In the last phase (the “bubble” phase), the event is delivered
+      to each widget from the target to the top-most, and event
+      controllers attached with %GTK_PHASE_BUBBLE are run.
    </para>

    <para>
-      The default handlers for the event signals send the event
-      to gestures that are attached with %GTK_PHASE_BUBBLE. Therefore,
-      gestures in the “bubble” phase are only used if the widget does
-      not have its own event handlers, or takes care to chain up to the
-      default #GtkWidget handlers.
+      Events are not delivered to a widget which is insensitive or
+      unmapped.
    </para>

    <para>
-      Events are not delivered to a widget which is insensitive or unmapped.
-    </para>
-
-    <para>
-      Any time during the propagation phase, a widget may indicate that a
-      received event was consumed and propagation should therefore be stopped.
-      In traditional event handlers, this is hinted by returning %GDK_EVENT_STOP.
-      If gestures are used, this may happen when the widget tells the gesture
-      to claim the event touch sequence (or the pointer events) for its own. See the
-      "gesture states" section below to know more of the latter.
+      Any time during the propagation phase, a controller may indicate
+      that a received event was consumed and propagation should
+      therefore be stopped. If gestures are used, this may happen
+      when the gesture claims the event touch sequence (or the
+      pointer events) for its own. See the “gesture states” section
+      below to learn more about gestures and sequences.
    </para>
  </refsect2>

@@ -183,27 +176,10 @@
    <title>Touch events</title>

    <para>
-      Touch events are emitted as events of type %GDK_TOUCH_BEGIN, %GDK_TOUCH_UPDATE or
-      %GDK_TOUCH_END, those events contain an “event sequence” that univocally identifies
-      the physical touch until it is lifted from the device.
-    </para>
-
-    <para>
-      On some windowing platforms, multitouch devices perform pointer emulation, this works
-      by granting a “pointer emulating” hint to one of the currently interacting touch
-      sequences, which will be reported on every #GdkEventTouch event from that sequence. By
-      default, if a widget didn't request touch events by setting %GDK_TOUCH_MASK on its
-      event mask and didn't override #GtkWidget::touch-event, GTK will transform these
-      “pointer emulating” events into semantically similar #GdkEventButton and #GdkEventMotion
-      events. Depending on %GDK_TOUCH_MASK being in the event mask or not, non-pointer-emulating
-      sequences could still trigger gestures or just get filtered out, regardless of the widget
-      not handling those directly.
-    </para>
-
-    <para>
-      If the widget sets %GDK_TOUCH_MASK on its event mask and doesn't chain up on
-      #GtkWidget::touch-event, only touch events will be received, and no pointer emulation
-      will be performed.
+      Touch events are emitted as events of type %GDK_TOUCH_BEGIN,
+      %GDK_TOUCH_UPDATE or %GDK_TOUCH_END, those events contain an
+      “event sequence” that univocally identifies the physical touch
+      until it is lifted from the device.
    </para>
  </refsect2>

@@ -211,43 +187,66 @@
    <title>Grabs</title>

    <para>
-      Grabs are a method to claim all input events from a device, they happen
-      either implicitly on pointer and touch devices, or explicitly. Implicit grabs
-      happen on user interaction, when a #GdkEventButtonPress happens, all events from
-      then on, until after the corresponding #GdkEventButtonRelease, will be reported
-      to the widget that got the first event. Likewise, on touch events, every
-      #GdkEventSequence will deliver only events to the widget that received its
-      %GDK_TOUCH_BEGIN event.
+      Grabs are a method to claim all input events from a device,
+      they happen either implicitly on pointer and touch devices,
+      or explicitly. Implicit grabs happen on user interaction, when
+      a #GdkEventButtonPress happens, all events from then on, until
+      after the corresponding #GdkEventButtonRelease, will be reported
+      to the widget that got the first event. Likewise, on touch events,
+      every #GdkEventSequence will deliver only events to the widget
+      that received its %GDK_TOUCH_BEGIN event.
    </para>

    <para>
-      Explicit grabs happen programatically (both activation and deactivation),
-      and can be either system-wide (GDK grabs) or application-wide (GTK grabs).
-      On the windowing platforms that support it, GDK grabs will prevent any
-      interaction with any other application/window/widget than the grabbing one,
-      whereas GTK grabs will be effective only within the application (across all
-      its windows), still allowing for interaction with other applications.
+      Explicit grabs happen programatically (both activation and
+      deactivation), and can be either system-wide (GDK grabs) or
+      application-wide (GTK grabs). On the windowing platforms that
+      support it, GDK grabs will prevent any interaction with any other
+      application/window/widget than the grabbing one, whereas GTK grabs
+      will be effective only within the application (across all its
+      windows), still allowing for interaction with other applications.
    </para>

    <para>
-      But one important aspect of grabs is that they may potentially happen at any
-      point somewhere else, even while the pointer/touch device is already grabbed.
-      This makes it necessary for widgets to handle the cancellation of any ongoing
-      interaction. Depending on whether a GTK or GDK grab is causing this, the
-      widget will respectively receive a #GtkWidget::grab-notify signal, or a
+      But one important aspect of grabs is that they may potentially
+      happen at any point somewhere else, even while the pointer/touch
+      device is already grabbed. This makes it necessary for widgets to
+      handle the cancellation of any ongoing interaction. Depending on
+      whether a GTK or GDK grab is causing this, the widget will
+      respectively receive a #GtkWidget::grab-notify signal, or a
      #GdkEventGrabBroken event.
    </para>

    <para>
-      On gestures, these signals are handled automatically, causing the gesture
-      to cancel all tracked pointer/touch events, and signal the end of recognition.
+      On gestures, these signals are handled automatically, causing the
+      gesture to cancel all tracked pointer/touch events, and signal
+      the end of recognition.
    </para>
  </refsect2>

  <refsect2>
    <title>Keyboard input</title>

-    <!-- focus, tab, directional navigation -->
+    <para>
+      Every #GtkWindow maintains a single focus location (in
+      the ::focus-widget property). The focus widget is the
+      target widget for key events sent to the window. Only
+      widgets which have ::can-focus set to %TRUE can become
+      the focus. Typically these are input controls such as
+      entries or text fields, but e.g. buttons can take the
+      focus too.
+    </para>
+
+    <para>
+      Input widgets can be given the focus by clicking on them,
+      but focus can also be moved around with certain key
+      events (this is known as “keyboard navigation”). GTK
+      reserves the Tab key to move the focus to the next location,
+      and Shift-Tab to move it back to the previous one. In addition
+      many containers allow “directional navigation” with the
+      arrow keys.
+    </para>
+
    <!-- mnemonics, accelerators, bindings -->
  </refsect2>

@@ -255,37 +254,43 @@
    <title>Event controllers and gestures</title>

    <para>
-      Event controllers are standalone objects that can perform specific actions
-      upon received #GdkEvents. These are tied to a #GtkWidget, and can be told of
-      the event propagation phase at which they will manage the events.
+      Event controllers are standalone objects that can perform
+      specific actions upon received #GdkEvents. These are tied
+      to a #GtkWidget, and can be told of the event propagation
+      phase at which they will manage the events.
    </para>

    <para>
-      Gestures are a set of specific controllers that are prepared to handle pointer
-      and/or touch events, each gestures implementation attempts to recognize specific
-      actions out the received events, notifying of the state/progress accordingly to
-      let the widget react to those. On multi-touch gestures, every interacting touch
-      sequence will be tracked independently.
+      Gestures are a set of specific controllers that are prepared
+      to handle pointer and/or touch events, each gesture
+      implementation attempts to recognize specific actions out the
+      received events, notifying of the state/progress accordingly to
+      let the widget react to those. On multi-touch gestures, every
+      interacting touch sequence will be tracked independently.
    </para>

    <para>
-      Being gestures “simple” units, it is not uncommon to tie several together to
-      perform higher level actions, grouped gestures handle the same event sequences
-      simultaneously, and those sequences share a same state across all grouped
+      Since gestures are “simple” units, it is not uncommon to tie
+      several together to perform higher level actions, grouped
+      gestures handle the same event sequences simultaneously, and
+      those sequences share a same state across all grouped
      gestures. Some examples of grouping may be:

      <simplelist>
 	<member>
-	  A “drag” and a “swipe” gestures may want grouping. The former will report
-	  events as the dragging happens, the latter will tell the swipe X/Y velocities
-	  only after gesture has finished.
+	  A “drag” and a “swipe” gestures may want grouping.
+          The former will report events as the dragging happens,
+          the latter will tell the swipe X/Y velocities only after
+          recognition has finished.
 	</member>
 	<member>
-	  Grouping a “drag” gesture with a “pan” gesture will only effectively allow
-	  dragging in the panning orientation, as both gestures share state.
+	  Grouping a “drag” gesture with a “pan” gesture will only
+          effectively allow dragging in the panning orientation, as
+          both gestures share state.
 	</member>
 	<member>
-	  If “press” and “long press” are wanted simultaneously, those would need grouping.
+	  If “press” and “long press” are wanted simultaneously,
+          those would need grouping.
 	</member>
      </simplelist>
    </para>
@@ -294,34 +299,39 @@
  <refsect2>
    <title>Gesture states</title>
    <para>
-      Gestures have a notion of “state” for each individual touch sequence. When events
-      from a touch sequence are first received, the touch sequence will have “none” state,
-      this means the touch sequence is being handled by the gesture to possibly trigger
+      Gestures have a notion of “state” for each individual touch
+      sequence. When events from a touch sequence are first received,
+      the touch sequence will have “none” state, this means the touch
+      sequence is being handled by the gesture to possibly trigger
      actions, but the event propagation will not be stopped.
    </para>

    <para>
-      When the gesture enters recognition, or at a later point in time, the widget may
-      choose to claim the touch sequences (individually or as a group), hence stopping
-      event propagation after the event is run through every gesture in that widget and
-      propagation phase. Anytime this happens, the touch sequences are cancelled downwards
-      the propagation chain, to let these know that no further events will be sent.
+      When the gesture enters recognition, or at a later point in time,
+      the widget may choose to claim the touch sequences (individually
+      or as a group), hence stopping event propagation after the event
+      is run through every gesture in that widget and propagation phase.
+      Anytime this happens, the touch sequences are cancelled downwards
+      the propagation chain, to let these know that no further events
+      will be sent.
    </para>

    <para>
-      Alternatively, or at a later point in time, the widget may choose to deny the touch
-      sequences, thus letting those go through again in event propagation. When this happens
-      in the capture phase, and if there are no other claiming gestures in the widget,
+      Alternatively, or at a later point in time, the widget may choose
+      to deny the touch sequences, thus letting those go through again
+      in event propagation. When this happens in the capture phase, and
+      if there are no other claiming gestures in the widget,
      a %GDK_TOUCH_BEGIN/%GDK_BUTTON_PRESS event will be emulated and
      propagated downwards, in order to preserve consistency.
    </para>

    <para>
-      Grouped gestures always share the same state for a given touch sequence, so setting
-      the state on one does transfer the state to the others. They also are mutually exclusive,
-      within a widget there may be only one gesture group claiming a given sequence. If
-      another gesture group claims later that same sequence, the first group will deny the
-      sequence.
+      Grouped gestures always share the same state for a given touch
+      sequence, so setting the state on one does transfer the state to
+      the others. They also are mutually exclusive, within a widget
+      there may be only one gesture group claiming a given sequence.
+      If another gesture group claims later that same sequence, the
+      first group will deny the sequence.
    </para>
  </refsect2>

@@ -333,6 +333,7 @@ images = [
 ]

 content_files = [
+  'actions.xml',
  'broadway.xml',
  'building.sgml',
  'compiling.sgml',
@@ -368,6 +369,7 @@ content_files = [
 ]

 expand_content_files = [
+  'actions.xml',
  'compiling.sgml',
  'drawing-model.xml',
  'glossary.xml',
@@ -11,7 +11,7 @@
    compared to GTK 3.x. Thankfully, most of the changes are not hard
    to adapt to and there are a number of steps that you can take to
    prepare your GTK 3.x application for the switch to GTK 4. After
-    that, there's a small number of adjustments that you may have to do
+    that, there's a number of adjustments that you may have to do
    when you actually switch your application to build against GTK 4.
  </para>

@@ -22,7 +22,7 @@
      The steps outlined in the following sections assume that your
      application is working with GTK 3.24, which is the final stable
      release of GTK 3.x. It includes all the necessary APIs and tools
-      to help you port your application to GTK 4. If you are still using
+      to help you port your application to GTK 4. If you are using
      an older version of GTK 3.x, you should first get your application
      to build and work with the latest minor release in the 3.24 series.
    </para>
@@ -84,9 +84,9 @@
      </para>
      <para>
        GTK 4 also removes the GDK_WA_VISUAL flag, and always uses
-        an RGBA visual for windows. To prepare your code for this,
-        use gdk_window_set_visual (gdk_screen_get_rgba_visual ()) after
-        creating your window.
+        an RGBA visual for windows. To prepare your code for this, use
+        <literal>gdk_window_set_visual (gdk_screen_get_rgba_visual ())</literal>
+        after creating your window.
      </para>
      <para>
        GTK 4 also removes the GDK_WA_WMCLASS flag. If you need this
@@ -110,7 +110,7 @@
    <section>
      <title>Stop using GtkBox:padding, GtkBox:fill and GtkBox:expand</title>
      <para>
-        GTK4 removes these #GtkBox child properties, so you should not use them.
+        GTK 4 removes these #GtkBox child properties, so you should not use them.
        You can replace GtkBox:padding using the #GtkWidget:margin properties
        on your #GtkBox child widgets.
      </para>
@@ -172,35 +172,30 @@
    <section>
      <title>Stop using GtkWidget event signals</title>
      <para>
-        Event controllers and #GtkGestures replace event signals in GTK 4. They
-        have been backported to GTK 3.x so you can prepare for this change.
+        Event controllers and #GtkGestures replace event signals in GTK 4.
+        They have been backported to GTK 3.x so you can prepare for this change.
      </para>
    </section>

    <section>
-      <title>Set a proper app_id</title>
+      <title>Set a proper application ID</title>
      <para>
-        In GTK4 we want the application's #GApplication
+        In GTK 4 we want the application's #GApplication
        'application-id' (and therefore the D-Bus name), the desktop
        file basename and Wayland's xdg-shell app_id to match. In
-        order to achieve this with GTK3 call g_set_prgname() with the same
-        application id you passed to #GtkApplication. Rename your
-        desktop files to match the application id if needed.
+        order to achieve this with GTK 3.x call g_set_prgname() with the same
+        application ID you passed to #GtkApplication. Rename your
+        desktop files to match the application ID if needed.
      </para>
      <para>
        The call to g_set_prgname() can be removed once you fully migrated
-        to GTK4.
+        to GTK 4.
      </para>
-    </section>
-
-    <section>
-      <title>Stop using GtkBox's pack-type child property</title>
      <para>
-        In order to improve performance and simplify the widget, GtkBox lost its
-        'pack-type' child property. In GTK4, every GtkBox instance has a simple
-        list of child widgets that it allocates from start to end.
-        The old behavior of pack-type=END can be emulated by simply making the
-        box child in the center hexpand and right-align the ones at the end.
+        You should be aware that changing the application ID makes your
+        application appear as a new, different app to application installers.
+        You should consult the appstream documentation for best practices
+        around renaming applications.
      </para>
    </section>

@@ -216,6 +211,17 @@
      have been either impossible or impractical.
    </para>

+    <section>
+      <title>Convert your ui files</title>
+
+      <para>
+        A number of the changes outlined below affect .ui files. The
+        gtk4-builder-tool simplify command can perform many of the
+        necessary changes automatically, when called with the --3to4
+        option. You should always review the resulting changes.
+      </para>
+    </section>
+
    <section>
      <title>Stop using GdkScreen</title>
      <para>
@@ -301,9 +307,9 @@
    </section>

    <section>
-      <title>Adapt to coordinate api changes</title>
+      <title>Adapt to coordinate API changes</title>
      <para>
-        A number of coordinate apis in GTK 3 had _double variants: 
+        A number of coordinate APIs in GTK 3 had _double variants: 
        gdk_device_get_position(), gdk_device_get_surface_at_position(),
        gdk_surface_get_device_position(). These have been changed to use
        doubles, and the _double variants have been removed. Update your
@@ -395,6 +401,10 @@
        their #GError argument. If you want to handle CSS loading errors,
        use the #GtkCssProvider::parsing-error signal instead.
      </para>
+      <para>
+        gtk_css_provider_get_named() has been replaced by
+        gtk_css_provider_load_named().
+      </para>
    </section>

    <section>
@@ -411,7 +421,7 @@
      <para>
        GTK 3 used five different virtual functions in GtkWidget to
        implement size requisition, namely the gtk_widget_get_preferred_width()
-        family of functions. To simplify widget implementations, GTK4 uses
+        family of functions. To simplify widget implementations, GTK 4 uses
        only one virtual function, GtkWidgetClass::measure() that widgets
        have to implement.
      </para>
@@ -640,7 +650,7 @@
    </section>

    <section>
-      <title>Adapt to changes in the API of GtkEntry, GtkSearchEntry adn GtkSpinButton</title>
+      <title>Adapt to changes in the API of GtkEntry, GtkSearchEntry and GtkSpinButton</title>
      <para>
        The GtkEditable has been made more useful, and the core functionality of
        GtkEntry has been broken out as a GtkText widget. GtkEntry, GtkSearchEntry,
@@ -675,6 +685,77 @@
        of the existing GtkFixed container widget.
      </para>
    </section>
+
+    <section>
+      <title>Adapt to search entry changes</title>
+      <para>
+        The way search entries are connected to global events has changed;
+        gtk_search_entry_handle_event() has been dropped and replaced by
+        gtk_search_entry_set_key_capture_widget() and
+        gtk_event_controller_key_forward().
+      </para>
+    </section>
+
+    <section>
+      <title>Stop using child properties</title>
+      <para>
+        GtkContainer no longer provides facilities for defining and using
+        child properties. If you have custom widgets using child properties,
+        they will have to be converted either to layout properties provided
+        by a layout manager (if they are layout-related), or handled in
+        some other way. One possibility is to use child meta objects,
+        as seen with GtkAssistantPage, GtkStackPage and the like.
+      </para>
+    </section>
+
+    <section>
+      <title>Stop using tabular menus</title>
+      <para>
+        Tabular menus were rarely used and complicated the menu code,
+        so they have been removed. If you need complex layout in menu-like
+        popups, consider using a #GtkPopover instead.
+      </para>
+    </section>
+
+    <section>
+      <title>Stop using gtk_menu_set_display()</title>
+      <para>
+        This function has been removed. Menus should always be
+        attached to a widget and get their display that way.
+      </para>
+    </section>
+
+    <section>
+      <title>Stop using gtk_window_activate_default()</title>
+      <para>
+        The handling of default widgets has been changed, and activating
+        the default now works by calling gtk_widget_activate_default()
+        on the widget that caused the activation.
+      </para>
+      <para>
+        If you have a custom widget that wants to override the default
+        handling, you can provide an implementation of the default.activate
+        action in your widgets' action groups.
+      </para>
+    </section>
+
+    <section>
+      <title>Stop setting ::has-default and ::has-focus in .ui files</title>
+      <para>
+        The special handling for the ::has-default and ::has-focus properties
+        has been removed. If you want to define the initial focus or the
+        the default widget in a .ui file, set the ::default-widget or
+        ::focus-widget properties of the toplevel window.
+      </para>
+    </section>
+
+    <section>
+      <title>Stop using the GtkWidget::display-changed signal</title>
+      <para>
+        To track the current display, use the GtkWidget::root property
+        instead.
+      </para>
+    </section>
  </section>

 </chapter>
@@ -79,12 +79,30 @@ Use a GdkPixbuf in combination with GtkImage to display images.
 </para></listitem>
 </varlistentry>

+<varlistentry>
+<term>graphene</term>
+<listitem><para>
+This is a small library which provides vector and matrix datatypes
+and operations. graphene provides optimized implementations using
+various SIMD instruction sets such as SSE.
+</para></listitem>
+</varlistentry>
+
 <varlistentry>
 <term>GDK</term>
 <listitem><para>
 GDK is the abstraction layer that allows GTK to support multiple
-windowing systems. GDK provides window system facilities on X11, Windows,
-and OS X.
+windowing systems. GDK provides window system facilities on Wayland,
+X11, Windows, and OS X.
+</para></listitem>
+</varlistentry>
+
+<varlistentry>
+<term>GSK</term>
+<listitem><para>
+GSK is a library for creating a scene graph from render nodes,
+and rendering it using different rendering APIs. GSK provides renderers
+for OpenGL, Vulkan and cairo.
 </para></listitem>
 </varlistentry>

@@ -473,24 +473,6 @@ gdk_broadway_surface_set_modal_hint (GdkSurface *surface,
 {
 }

-static void
-gdk_broadway_surface_set_skip_taskbar_hint (GdkSurface *surface,
-                                            gboolean   skips_taskbar)
-{
-}
-
-static void
-gdk_broadway_surface_set_skip_pager_hint (GdkSurface *surface,
-                                          gboolean   skips_pager)
-{
-}
-
-static void
-gdk_broadway_surface_set_urgency_hint (GdkSurface *surface,
-                                       gboolean   urgent)
-{
-}
-
 static void
 gdk_broadway_surface_set_geometry_hints (GdkSurface         *surface,
                                         const GdkGeometry *geometry,
@@ -800,22 +782,6 @@ gdk_broadway_surface_set_keep_below (GdkSurface *surface, gboolean setting)

 }

-static GdkSurface *
-gdk_broadway_surface_get_group (GdkSurface *surface)
-{
-  if (GDK_SURFACE_DESTROYED (surface) ||
-      !SURFACE_IS_TOPLEVEL (surface))
-    return NULL;
-
-  return surface;
-}
-
-static void
-gdk_broadway_surface_set_group (GdkSurface *surface,
-                                GdkSurface *leader)
-{
-}
-
 static void
 gdk_broadway_surface_set_decorations (GdkSurface      *surface,
                                      GdkWMDecoration decorations)
@@ -1356,9 +1322,6 @@ gdk_surface_impl_broadway_class_init (GdkSurfaceImplBroadwayClass *klass)
  impl_class->set_type_hint = gdk_broadway_surface_set_type_hint;
  impl_class->get_type_hint = gdk_broadway_surface_get_type_hint;
  impl_class->set_modal_hint = gdk_broadway_surface_set_modal_hint;
-  impl_class->set_skip_taskbar_hint = gdk_broadway_surface_set_skip_taskbar_hint;
-  impl_class->set_skip_pager_hint = gdk_broadway_surface_set_skip_pager_hint;
-  impl_class->set_urgency_hint = gdk_broadway_surface_set_urgency_hint;
  impl_class->set_geometry_hints = gdk_broadway_surface_set_geometry_hints;
  impl_class->set_title = gdk_broadway_surface_set_title;
  impl_class->set_startup_id = gdk_broadway_surface_set_startup_id;
@@ -1378,8 +1341,6 @@ gdk_surface_impl_broadway_class_init (GdkSurfaceImplBroadwayClass *klass)
  impl_class->unfullscreen = gdk_broadway_surface_unfullscreen;
  impl_class->set_keep_above = gdk_broadway_surface_set_keep_above;
  impl_class->set_keep_below = gdk_broadway_surface_set_keep_below;
-  impl_class->get_group = gdk_broadway_surface_get_group;
-  impl_class->set_group = gdk_broadway_surface_set_group;
  impl_class->set_decorations = gdk_broadway_surface_set_decorations;
  impl_class->get_decorations = gdk_broadway_surface_get_decorations;
  impl_class->set_functions = gdk_broadway_surface_set_functions;
@@ -145,6 +145,7 @@ static const GDebugKey gdk_debug_keys[] = {
  { "gl-texture-rect", GDK_DEBUG_GL_TEXTURE_RECT },
  { "gl-legacy",       GDK_DEBUG_GL_LEGACY },
  { "gl-gles",         GDK_DEBUG_GL_GLES },
+  { "gl-debug",        GDK_DEBUG_GL_DEBUG },
  { "vulkan-disable",  GDK_DEBUG_VULKAN_DISABLE },
  { "vulkan-validate", GDK_DEBUG_VULKAN_VALIDATE }
 };
@@ -146,15 +146,48 @@ gdk_event_class_init (GdkEventClass *klass)
  g_object_class_install_properties (object_class, N_PROPS, event_props);
 }

-void
-_gdk_event_emit (GdkEvent *event)
+gboolean
+check_event_sanity (GdkEvent *event)
 {
+  GdkDisplay *display;
+  GdkSurface *surface;
+  GdkDevice *device;
+
+  display = gdk_event_get_display (event);
+  surface = gdk_event_get_surface (event);
+  device = gdk_event_get_device (event);
+
  if (gdk_event_get_event_type (event) == GDK_NOTHING)
    {
      g_warning ("Ignoring GDK_NOTHING events; they're good for nothing");
-      return;
+      return FALSE;
    }

+  if (surface && display != gdk_surface_get_display (surface))
+    {
+      char *type = g_enum_to_string (GDK_TYPE_EVENT_TYPE, event->any.type);
+      g_warning ("Event of type %s with mismatched surface display", type);
+      g_free (type);
+      return FALSE;
+    }
+
+  if (device && display != gdk_device_get_display (device))
+    {
+      char *type = g_enum_to_string (GDK_TYPE_EVENT_TYPE, event->any.type);
+      g_warning ("Event of type %s with mismatched device display", type);
+      g_free (type);
+      return FALSE;
+    }
+
+  return TRUE;
+}
+
+void
+_gdk_event_emit (GdkEvent *event)
+{
+  if (!check_event_sanity (event))
+    return;
+
  if (gdk_drag_handle_source_event (event))
    return;

@@ -645,5 +645,7 @@ void           gdk_event_set_related_target       (GdkEvent *event,
                                                  GObject  *user_data);
 GObject *      gdk_event_get_related_target      (const GdkEvent *event);

+gboolean       check_event_sanity (GdkEvent *event);
+

 #endif /* __GDK_EVENTS_PRIVATE_H__ */
@@ -38,9 +38,6 @@

 struct _GdkFrameClockIdlePrivate
 {
-  GTimer *timer;
-  /* timer_base is used to avoid ever going backward */
-  gint64 timer_base;
  gint64 frame_time;
  gint64 min_next_frame_time;
  gint64 sleep_serial;
@@ -161,22 +158,12 @@ compute_frame_time (GdkFrameClockIdle *idle)
 {
  GdkFrameClockIdlePrivate *priv = idle->priv;
  gint64 computed_frame_time;
-  gint64 elapsed;

-  elapsed = g_get_monotonic_time () + priv->timer_base;
-  if (elapsed < priv->frame_time)
-    {
-      /* clock went backward. adapt to that by forevermore increasing
-       * timer_base.  For now, assume we've gone forward in time 1ms.
-       */
-      /* hmm. just fix GTimer? */
+  computed_frame_time = g_get_monotonic_time ();
+
+  /* ensure monotonicity of frame time */
+  if (computed_frame_time <= priv->frame_time)
      computed_frame_time = priv->frame_time + 1;
-      priv->timer_base += (priv->frame_time - elapsed) + 1;
-    }
-  else
-    {
-      computed_frame_time = elapsed;
-    }

  return computed_frame_time;
 }
@@ -399,7 +386,8 @@ gdk_frame_clock_paint_idle (void *data)
              _gdk_frame_clock_emit_before_paint (clock);
              priv->phase = GDK_FRAME_CLOCK_PHASE_UPDATE;
            }
-          /* fallthrough */
+          G_GNUC_FALLTHROUGH;
+
        case GDK_FRAME_CLOCK_PHASE_UPDATE:
          if (priv->freeze_count == 0)
            {
@@ -410,7 +398,8 @@ gdk_frame_clock_paint_idle (void *data)
                  _gdk_frame_clock_emit_update (clock);
                }
            }
-          /* fallthrough */
+          G_GNUC_FALLTHROUGH;
+
        case GDK_FRAME_CLOCK_PHASE_LAYOUT:
          if (priv->freeze_count == 0)
            {
@@ -440,7 +429,8 @@ gdk_frame_clock_paint_idle (void *data)
 	      if (iter == 5)
 		g_warning ("gdk-frame-clock: layout continuously requested, giving up after 4 tries");
            }
-          /* fallthrough */
+          G_GNUC_FALLTHROUGH;
+
        case GDK_FRAME_CLOCK_PHASE_PAINT:
          if (priv->freeze_count == 0)
            {
@@ -460,7 +450,8 @@ gdk_frame_clock_paint_idle (void *data)
                  _gdk_frame_clock_emit_paint (clock);
                }
            }
-          /* fallthrough */
+          G_GNUC_FALLTHROUGH;
+
        case GDK_FRAME_CLOCK_PHASE_AFTER_PAINT:
          if (priv->freeze_count == 0)
            {
@@ -475,7 +466,8 @@ gdk_frame_clock_paint_idle (void *data)
                timings->frame_end_time = g_get_monotonic_time ();
 #endif /* G_ENABLE_DEBUG */
            }
-          /* fallthrough */
+          G_GNUC_FALLTHROUGH;
+
        case GDK_FRAME_CLOCK_PHASE_RESUME_EVENTS:
        default:
          ;
@@ -105,6 +105,8 @@ typedef struct {
  guint use_texture_rectangle : 1;
  guint has_gl_framebuffer_blit : 1;
  guint has_frame_terminator : 1;
+  guint has_khr_debug : 1;
+  guint use_khr_debug : 1;
  guint has_unpack_subimage : 1;
  guint has_debug_output : 1;
  guint extensions_checked : 1;
@@ -114,6 +116,8 @@ typedef struct {

  int use_es;

+  int max_debug_label_length;
+
  GdkGLContextPaintData *paint_data;
 } GdkGLContextPrivate;

@@ -434,6 +438,87 @@ gdk_gl_context_has_frame_terminator (GdkGLContext *context)
  return priv->has_frame_terminator;
 }

+void
+gdk_gl_context_push_debug_group (GdkGLContext *context,
+                                 const char   *message)
+{
+  GdkGLContextPrivate *priv = gdk_gl_context_get_instance_private (context);
+
+  if (priv->use_khr_debug)
+    glPushDebugGroupKHR (GL_DEBUG_SOURCE_APPLICATION, 0, -1, message);
+}
+
+void
+gdk_gl_context_push_debug_group_printf (GdkGLContext *context,
+                                        const char   *format,
+                                        ...)
+{
+  GdkGLContextPrivate *priv = gdk_gl_context_get_instance_private (context);
+  gchar *message;
+  va_list args;
+
+  if (priv->use_khr_debug)
+    {
+      int msg_len;
+
+      va_start (args, format);
+      message = g_strdup_vprintf (format, args);
+      va_end (args);
+
+      msg_len = MIN (priv->max_debug_label_length, strlen (message) - 1);
+      glPushDebugGroupKHR (GL_DEBUG_SOURCE_APPLICATION, 0, msg_len, message);
+      g_free (message);
+    }
+}
+
+void
+gdk_gl_context_pop_debug_group (GdkGLContext *context)
+{
+  GdkGLContextPrivate *priv = gdk_gl_context_get_instance_private (context);
+
+  if (priv->use_khr_debug)
+    glPopDebugGroupKHR ();
+}
+
+void
+gdk_gl_context_label_object (GdkGLContext *context,
+                             guint         identifier,
+                             guint         name,
+                             const char   *label)
+{
+  GdkGLContextPrivate *priv = gdk_gl_context_get_instance_private (context);
+
+  if (priv->use_khr_debug)
+    glObjectLabel (identifier, name, -1, label);
+}
+
+void
+gdk_gl_context_label_object_printf  (GdkGLContext *context,
+                                     guint         identifier,
+                                     guint         name,
+                                     const char   *format,
+                                     ...)
+{
+  GdkGLContextPrivate *priv = gdk_gl_context_get_instance_private (context);
+  gchar *message;
+  va_list args;
+
+  if (priv->use_khr_debug)
+    {
+      int msg_len;
+
+      va_start (args, format);
+      message = g_strdup_vprintf (format, args);
+      va_end (args);
+
+      msg_len = MIN (priv->max_debug_label_length, strlen (message) - 1);
+
+      glObjectLabel (identifier, name, msg_len, message);
+      g_free (message);
+    }
+}
+
+
 gboolean
 gdk_gl_context_has_unpack_subimage (GdkGLContext *context)
 {
@@ -896,6 +981,7 @@ gdk_gl_context_check_extensions (GdkGLContext *context)
      priv->has_frame_terminator = FALSE;

      priv->has_unpack_subimage = epoxy_has_gl_extension ("GL_EXT_unpack_subimage");
+      priv->has_khr_debug = epoxy_has_gl_extension ("GL_KHR_debug");
    }
  else
    {
@@ -905,6 +991,7 @@ gdk_gl_context_check_extensions (GdkGLContext *context)
      priv->has_gl_framebuffer_blit = epoxy_has_gl_extension ("GL_EXT_framebuffer_blit");
      priv->has_frame_terminator = epoxy_has_gl_extension ("GL_GREMEDY_frame_terminator");
      priv->has_unpack_subimage = TRUE;
+      priv->has_khr_debug = epoxy_has_gl_extension ("GL_KHR_debug");

      /* We asked for a core profile, but we didn't get one, so we're in legacy mode */
      if (priv->gl_version < 32)
@@ -913,6 +1000,11 @@ gdk_gl_context_check_extensions (GdkGLContext *context)

  display = gdk_draw_context_get_display (GDK_DRAW_CONTEXT (context));

+  if (priv->has_khr_debug && GDK_DISPLAY_DEBUG_CHECK (display, GL_DEBUG))
+    {
+      priv->use_khr_debug = TRUE;
+      glGetIntegerv (GL_MAX_LABEL_LENGTH, &priv->max_debug_label_length);
+    }
  if (!priv->use_es && GDK_DISPLAY_DEBUG_CHECK (display, GL_TEXTURE_RECT))
    priv->use_texture_rectangle = TRUE;
  else if (has_npot)
@@ -930,6 +1022,7 @@ gdk_gl_context_check_extensions (GdkGLContext *context)
                       " - GL_ARB_texture_rectangle: %s\n"
                       " - GL_EXT_framebuffer_blit: %s\n"
                       " - GL_GREMEDY_frame_terminator: %s\n"
+                       " - GL_KHR_debug: %s\n"
                       "* Using texture rectangle: %s",
                       priv->use_es ? "OpenGL ES" : "OpenGL",
                       priv->gl_version / 10, priv->gl_version % 10,
@@ -939,6 +1032,7 @@ gdk_gl_context_check_extensions (GdkGLContext *context)
                       has_texture_rectangle ? "yes" : "no",
                       priv->has_gl_framebuffer_blit ? "yes" : "no",
                       priv->has_frame_terminator ? "yes" : "no",
+                       priv->has_khr_debug ? "yes" : "no",
                       priv->use_texture_rectangle ? "yes" : "no"));

  priv->extensions_checked = TRUE;
@@ -90,7 +90,21 @@ gboolean                gdk_gl_context_use_texture_rectangle    (GdkGLContext
 gboolean                gdk_gl_context_has_framebuffer_blit     (GdkGLContext    *context);
 gboolean                gdk_gl_context_has_frame_terminator     (GdkGLContext    *context);
 gboolean                gdk_gl_context_has_unpack_subimage      (GdkGLContext    *context);
-
+void                    gdk_gl_context_push_debug_group         (GdkGLContext    *context,
+                                                                 const char      *message);
+void                    gdk_gl_context_push_debug_group_printf  (GdkGLContext    *context,
+                                                                 const gchar     *format,
+                                                                 ...)  G_GNUC_PRINTF (2, 3);
+void                    gdk_gl_context_pop_debug_group          (GdkGLContext    *context);
+void                    gdk_gl_context_label_object             (GdkGLContext    *context,
+                                                                 guint            identifier,
+                                                                 guint            name,
+                                                                 const char      *label);
+void                    gdk_gl_context_label_object_printf      (GdkGLContext    *context,
+                                                                 guint            identifier,
+                                                                 guint            name,
+                                                                 const char      *format,
+                                                                ...)  G_GNUC_PRINTF (4, 5);
 G_END_DECLS

 #endif /* __GDK_GL_CONTEXT_PRIVATE_H__ */
@@ -63,8 +63,9 @@ typedef enum {
  GDK_DEBUG_GL_TEXTURE_RECT = 1 << 14,
  GDK_DEBUG_GL_LEGACY       = 1 << 15,
  GDK_DEBUG_GL_GLES         = 1 << 16,
-  GDK_DEBUG_VULKAN_DISABLE  = 1 << 17,
-  GDK_DEBUG_VULKAN_VALIDATE = 1 << 18
+  GDK_DEBUG_GL_DEBUG        = 1 << 17,
+  GDK_DEBUG_VULKAN_DISABLE  = 1 << 18,
+  GDK_DEBUG_VULKAN_VALIDATE = 1 << 19
 } GdkDebugFlags;

 extern guint _gdk_debug_flags;
@@ -131,7 +132,6 @@ struct _GdkSurfaceAttr
  gint height;
  GdkSurfaceSurfaceClass wclass;
  GdkSurfaceType surface_type;
-  GdkSurfaceTypeHint type_hint;
 };

 struct _GdkSurface
@@ -283,6 +283,10 @@ GdkSurface* gdk_surface_new               (GdkDisplay     *display,
                                           GdkSurfaceAttr  *attributes);
 void       _gdk_surface_destroy           (GdkSurface      *surface,
                                           gboolean        foreign_destroy);
+void       gdk_surface_invalidate_rect    (GdkSurface           *surface,
+                                           const GdkRectangle   *rect);
+void       gdk_surface_invalidate_region  (GdkSurface           *surface,
+                                           const cairo_region_t *region);
 void       _gdk_surface_clear_update_area (GdkSurface      *surface);
 void       _gdk_surface_update_size       (GdkSurface      *surface);
 gboolean   _gdk_surface_update_viewable   (GdkSurface      *surface);
@@ -23,7 +23,9 @@
 */

 #include "config.h"
-#include "gdkrgba.h"
+
+#include "gdkrgbaprivate.h"
+
 #include <string.h>
 #include <errno.h>
 #include <math.h>
@@ -393,3 +395,183 @@ gdk_rgba_to_string (const GdkRGBA *rgba)
                              alpha);
    }
 }
+
+static gboolean
+parse_color_channel_value (GtkCssParser *parser,
+                           double       *value,
+                           gboolean      is_percentage)
+{
+  if (is_percentage)
+    {
+      if (!gtk_css_parser_consume_percentage (parser, value))
+        return FALSE;
+
+      *value = CLAMP (*value, 0.0, 100.0) / 100.0;
+      return TRUE;
+    }
+  else
+    {
+      if (!gtk_css_parser_consume_number (parser, value))
+        return FALSE;
+
+      *value = CLAMP (*value, 0.0, 255.0) / 255.0;
+      return TRUE;
+    }
+}
+
+static guint
+parse_color_channel (GtkCssParser *parser,
+                     guint         arg,
+                     gpointer      data)
+{
+  GdkRGBA *rgba = data;
+
+  switch (arg)
+  {
+    case 0:
+      /* We abuse rgba->alpha to store if we use percentages or numbers */
+      if (gtk_css_token_is (gtk_css_parser_get_token (parser), GTK_CSS_TOKEN_PERCENTAGE))
+        rgba->alpha = 1.0;
+      else
+        rgba->alpha = 0.0;
+
+      if (!parse_color_channel_value (parser, &rgba->red, rgba->alpha != 0.0))
+        return 0;
+      return 1;
+
+    case 1:
+      if (!parse_color_channel_value (parser, &rgba->green, rgba->alpha != 0.0))
+        return 0;
+      return 1;
+
+    case 2:
+      if (!parse_color_channel_value (parser, &rgba->blue, rgba->alpha != 0.0))
+        return 0;
+      return 1;
+
+    case 3:
+      if (!gtk_css_parser_consume_number (parser, &rgba->alpha))
+        return 0;
+
+      rgba->alpha = CLAMP (rgba->alpha, 0.0, 1.0);
+      return 1;
+
+    default:
+      g_assert_not_reached ();
+      return 0;
+  }
+}
+
+static gboolean
+rgba_init_chars (GdkRGBA    *rgba,
+                 const char  s[8])
+{
+  guint i;
+
+  for (i = 0; i < 8; i++)
+    {
+      if (!g_ascii_isxdigit (s[i]))
+        return FALSE;
+    }
+
+  rgba->red =   (g_ascii_xdigit_value (s[0]) * 16 + g_ascii_xdigit_value (s[1])) / 255.0;
+  rgba->green = (g_ascii_xdigit_value (s[2]) * 16 + g_ascii_xdigit_value (s[3])) / 255.0;
+  rgba->blue =  (g_ascii_xdigit_value (s[4]) * 16 + g_ascii_xdigit_value (s[5])) / 255.0;
+  rgba->alpha = (g_ascii_xdigit_value (s[6]) * 16 + g_ascii_xdigit_value (s[7])) / 255.0;
+
+  return TRUE;
+}
+
+gboolean
+gdk_rgba_parser_parse (GtkCssParser *parser,
+                       GdkRGBA      *rgba)
+{
+  const GtkCssToken *token;
+
+  token = gtk_css_parser_get_token (parser);
+  if (gtk_css_token_is_function (token, "rgb"))
+    {
+      if (!gtk_css_parser_consume_function (parser, 3, 3, parse_color_channel, rgba))
+        return FALSE;
+
+      rgba->alpha = 1.0;
+      return TRUE;
+    }
+  else if (gtk_css_token_is_function (token, "rgba"))
+    {
+      return gtk_css_parser_consume_function (parser, 4, 4, parse_color_channel, rgba);
+    }
+  else if (gtk_css_token_is (token, GTK_CSS_TOKEN_HASH_ID) ||
+           gtk_css_token_is (token, GTK_CSS_TOKEN_HASH_UNRESTRICTED))
+    {
+      const char *s = token->string.string;
+
+      switch (strlen (s))
+        {
+          case 3:
+            if (!rgba_init_chars (rgba, (char[8]) {s[0], s[0], s[1], s[1], s[2], s[2], 'F', 'F' }))
+              {
+                gtk_css_parser_error_value (parser, "Hash code is not a valid hex color.");
+                return FALSE;
+              }
+            break;
+
+          case 4:
+            if (!rgba_init_chars (rgba, (char[8]) {s[0], s[0], s[1], s[1], s[2], s[2], s[3], s[3] }))
+              {
+                gtk_css_parser_error_value (parser, "Hash code is not a valid hex color.");
+                return FALSE;
+              }
+            break;
+
+          case 6:
+            if (!rgba_init_chars (rgba, (char[8]) {s[0], s[1], s[2], s[3], s[4], s[5], 'F', 'F' }))
+              {
+                gtk_css_parser_error_value (parser, "Hash code is not a valid hex color.");
+                return FALSE;
+              }
+            break;
+
+          case 8:
+            if (!rgba_init_chars (rgba, s))
+              {
+                gtk_css_parser_error_value (parser, "Hash code is not a valid hex color.");
+                return FALSE;
+              }
+            break;
+
+          default:
+            gtk_css_parser_error_value (parser, "Hash code is not a valid hex color.");
+            return FALSE;
+            break;
+        }
+
+      gtk_css_parser_consume_token (parser);
+      return TRUE;
+    }
+  else if (gtk_css_token_is (token, GTK_CSS_TOKEN_IDENT))
+    {
+      if (gtk_css_token_is_ident (token, "transparent"))
+        {
+          *rgba = (GdkRGBA) { 0, 0, 0, 0 };
+        }
+      else if (gdk_rgba_parse (rgba, token->string.string))
+        {
+          /* everything's fine */
+        }
+      else
+        {
+          gtk_css_parser_error_syntax (parser, "\"%s\" is not a valid color name.", token->string.string);
+          return FALSE;
+        }
+
+      gtk_css_parser_consume_token (parser);
+      return TRUE;
+    }
+  else
+    {
+      gtk_css_parser_error_syntax (parser, "Expected a valid color.");
+      return FALSE;
+    }
+}
+
@@ -0,0 +1,33 @@
+/* GDK - The GIMP Drawing Kit
+ * Copyright (C) 2010, 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 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/>.
+ */
+
+#ifndef __GDK_RGBA_PRIVATE_H__
+#define __GDK_RGBA_PRIVATE_H__
+
+#include "gdkrgba.h"
+
+#include <gtk/css/gtkcss.h>
+
+#include "gtk/css/gtkcssparserprivate.h"
+
+
+gboolean               gdk_rgba_parser_parse                    (GtkCssParser           *parser,
+                                                                 GdkRGBA                *rgba);
+
+G_END_DECLS
+
+#endif
@@ -293,6 +293,7 @@ gdk_seat_grab (GdkSeat                *seat,

  g_return_val_if_fail (GDK_IS_SEAT (seat), GDK_GRAB_FAILED);
  g_return_val_if_fail (GDK_IS_SURFACE (surface), GDK_GRAB_FAILED);
+  g_return_val_if_fail (gdk_surface_get_display (surface) == gdk_seat_get_display (seat), GDK_GRAB_FAILED);

  capabilities &= GDK_SEAT_CAPABILITY_ALL;
  g_return_val_if_fail (capabilities != GDK_SEAT_CAPABILITY_NONE, GDK_GRAB_FAILED);
@@ -107,6 +107,7 @@ enum {
  PROP_0,
  PROP_CURSOR,
  PROP_DISPLAY,
+  PROP_FRAME_CLOCK,
  PROP_STATE,
  PROP_MAPPED,
  LAST_PROP
@@ -268,6 +269,13 @@ gdk_surface_class_init (GdkSurfaceClass *klass)
                           GDK_TYPE_DISPLAY,
                           G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);

+  properties[PROP_FRAME_CLOCK] =
+      g_param_spec_object ("frame-clock",
+                           P_("Frame Clock"),
+                           P_("Frame Clock"),
+                           GDK_TYPE_FRAME_CLOCK,
+                           G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
+
  properties[PROP_STATE] =
      g_param_spec_flags ("state",
                          P_("State"),
@@ -462,6 +470,10 @@ gdk_surface_set_property (GObject      *object,
      g_assert (surface->display != NULL);
      break;

+    case PROP_FRAME_CLOCK:
+      gdk_surface_set_frame_clock (surface, GDK_FRAME_CLOCK (g_value_get_object (value)));
+      break;
+
    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
      break;
@@ -486,6 +498,10 @@ gdk_surface_get_property (GObject    *object,
      g_value_set_object (value, surface->display);
      break;

+    case PROP_FRAME_CLOCK:
+      g_value_set_object (value, surface->frame_clock);
+      break;
+
    case PROP_STATE:
      g_value_set_flags (value, surface->state);
      break;
@@ -4118,61 +4134,6 @@ gdk_surface_set_modal_hint (GdkSurface *surface,
  GDK_SURFACE_IMPL_GET_CLASS (surface->impl)->set_modal_hint (surface, modal);
 }

-/**
- * gdk_surface_set_skip_taskbar_hint:
- * @surface: a toplevel #GdkSurface
- * @skips_taskbar: %TRUE to skip the taskbar
- *
- * Toggles whether a surface should appear in a task list or surface
- * list. If a surface’s semantic type as specified with
- * gdk_surface_set_type_hint() already fully describes the surface, this
- * function should not be called in addition,
- * instead you should allow the surface to be treated according to
- * standard policy for its semantic type.
- **/
-void
-gdk_surface_set_skip_taskbar_hint (GdkSurface *surface,
-                                   gboolean   skips_taskbar)
-{
-  GDK_SURFACE_IMPL_GET_CLASS (surface->impl)->set_skip_taskbar_hint (surface, skips_taskbar);
-}
-
-/**
- * gdk_surface_set_skip_pager_hint:
- * @surface: a toplevel #GdkSurface
- * @skips_pager: %TRUE to skip the pager
- *
- * Toggles whether a surface should appear in a pager (workspace
- * switcher, or other desktop utility program that displays a small
- * thumbnail representation of the surfaces on the desktop). If a
- * surface’s semantic type as specified with gdk_surface_set_type_hint()
- * already fully describes the surface, this function should
- * not be called in addition, instead you should
- * allow the surface to be treated according to standard policy for
- * its semantic type.
- **/
-void
-gdk_surface_set_skip_pager_hint (GdkSurface *surface,
-                                 gboolean   skips_pager)
-{
-  GDK_SURFACE_IMPL_GET_CLASS (surface->impl)->set_skip_pager_hint (surface, skips_pager);
-}
-
-/**
- * gdk_surface_set_urgency_hint:
- * @surface: a toplevel #GdkSurface
- * @urgent: %TRUE if the surface is urgent
- *
- * Toggles whether a surface needs the user's
- * urgent attention.
- **/
-void
-gdk_surface_set_urgency_hint (GdkSurface *surface,
-                              gboolean   urgent)
-{
-  GDK_SURFACE_IMPL_GET_CLASS (surface->impl)->set_urgency_hint (surface, urgent);
-}
-
 /**
 * gdk_surface_set_geometry_hints:
 * @surface: a toplevel #GdkSurface
@@ -4259,7 +4220,7 @@ gdk_surface_set_startup_id (GdkSurface   *surface,
 **/
 void
 gdk_surface_set_transient_for (GdkSurface *surface,
-                              GdkSurface *parent)
+                               GdkSurface *parent)
 {
  surface->transient_for = parent;

@@ -4683,43 +4644,6 @@ gdk_surface_set_keep_below (GdkSurface *surface,
  GDK_SURFACE_IMPL_GET_CLASS (surface->impl)->set_keep_below (surface, setting);
 }

-/**
- * gdk_surface_get_group:
- * @surface: a toplevel #GdkSurface
- *
- * Returns the group leader surface for @surface. See gdk_surface_set_group().
- *
- * Returns: (transfer none): the group leader surface for @surface
- **/
-GdkSurface *
-gdk_surface_get_group (GdkSurface *surface)
-{
-  return GDK_SURFACE_IMPL_GET_CLASS (surface->impl)->get_group (surface);
-}
-
-/**
- * gdk_surface_set_group:
- * @surface: a toplevel #GdkSurface
- * @leader: (allow-none): group leader surface, or %NULL to restore the default group leader surface
- *
- * Sets the group leader surface for @surface. By default,
- * GDK sets the group leader for all toplevel surfaces
- * to a global surface implicitly created by GDK. With this function
- * you can override this default.
- *
- * The group leader surface allows the window manager to distinguish
- * all surfaces that belong to a single application. It may for example
- * allow users to minimize/unminimize all surfaces belonging to an
- * application at once. You should only set a non-default group surface
- * if your application pretends to be multiple applications.
- **/
-void
-gdk_surface_set_group (GdkSurface *surface,
-                       GdkSurface *leader)
-{
-  GDK_SURFACE_IMPL_GET_CLASS (surface->impl)->set_group (surface, leader);
-}
-
 /**
 * gdk_surface_set_decorations:
 * @surface: a toplevel #GdkSurface
@@ -555,16 +555,6 @@ GDK_AVAILABLE_IN_ALL
 void          gdk_surface_set_modal_hint   (GdkSurface       *surface,
                                            gboolean         modal);

-GDK_AVAILABLE_IN_ALL
-void gdk_surface_set_skip_taskbar_hint (GdkSurface *surface,
-                                        gboolean   skips_taskbar);
-GDK_AVAILABLE_IN_ALL
-void gdk_surface_set_skip_pager_hint   (GdkSurface *surface,
-                                        gboolean   skips_pager);
-GDK_AVAILABLE_IN_ALL
-void gdk_surface_set_urgency_hint      (GdkSurface *surface,
-                                        gboolean   urgent);
-
 GDK_AVAILABLE_IN_ALL
 void          gdk_surface_set_geometry_hints (GdkSurface          *surface,
                                              const GdkGeometry  *geometry,
@@ -663,11 +653,6 @@ GDK_AVAILABLE_IN_ALL
 void          gdk_surface_set_icon_name  (GdkSurface      *surface,
                                          const gchar     *name);
 GDK_AVAILABLE_IN_ALL
-void          gdk_surface_set_group      (GdkSurface      *surface,
-                                          GdkSurface      *leader);
-GDK_AVAILABLE_IN_ALL
-GdkSurface*    gdk_surface_get_group     (GdkSurface      *surface);
-GDK_AVAILABLE_IN_ALL
 void          gdk_surface_set_decorations (GdkSurface     *surface,
                                           GdkWMDecoration  decorations);
 GDK_AVAILABLE_IN_ALL
@@ -755,12 +740,6 @@ void gdk_surface_begin_move_drag_for_device   (GdkSurface     *surface,
 /* Interface for dirty-region queueing */
 GDK_AVAILABLE_IN_ALL
 void       gdk_surface_queue_expose              (GdkSurface          *surface);
-GDK_AVAILABLE_IN_ALL
-void       gdk_surface_invalidate_rect           (GdkSurface          *surface,
-                                                  const GdkRectangle   *rect);
-GDK_AVAILABLE_IN_ALL
-void       gdk_surface_invalidate_region         (GdkSurface          *surface,
-                                                  const cairo_region_t *region);

 GDK_AVAILABLE_IN_ALL
 void       gdk_surface_freeze_updates      (GdkSurface    *surface);
@@ -125,12 +125,6 @@ struct _GdkSurfaceImplClass
  GdkSurfaceTypeHint (* get_type_hint)   (GdkSurface       *surface);
  void         (* set_modal_hint)       (GdkSurface *surface,
                                         gboolean   modal);
-  void         (* set_skip_taskbar_hint) (GdkSurface *surface,
-                                          gboolean   skips_taskbar);
-  void         (* set_skip_pager_hint)  (GdkSurface *surface,
-                                         gboolean   skips_pager);
-  void         (* set_urgency_hint)     (GdkSurface *surface,
-                                         gboolean   urgent);
  void         (* set_geometry_hints)   (GdkSurface         *surface,
                                         const GdkGeometry *geometry,
                                         GdkSurfaceHints     geom_mask);
@@ -165,9 +159,6 @@ struct _GdkSurfaceImplClass
                                         gboolean   setting);
  void         (* set_keep_below)       (GdkSurface *surface,
                                         gboolean   setting);
-  GdkSurface *  (* get_group)            (GdkSurface *surface);
-  void         (* set_group)            (GdkSurface *surface,
-                                         GdkSurface *leader);
  void         (* set_decorations)      (GdkSurface      *surface,
                                         GdkWMDecoration decorations);
  gboolean     (* get_decorations)      (GdkSurface       *surface,
@@ -15,7 +15,7 @@
 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
 */

-#if !defined (__GDK_H_INSIDE__) && !defined (GDK_COMPILATION)
+#if !defined (__GDK_H_INSIDE__) && !defined (__GTK_CSS_H_INSIDE__) && !defined (GDK_COMPILATION) && !defined (GTK_CSS_COMPILATION)
 #error "Only <gdk/gdk.h> can be included directly."
 #endif

@@ -194,6 +194,10 @@ gdk_vulkan_strerror (VkResult result)
    case VK_ERROR_INVALID_DRM_FORMAT_MODIFIER_PLANE_LAYOUT_EXT:
      return "Invalid DRM format modifier plane layout";
 #endif
+#if VK_HEADER_VERSION >= 97
+    case VK_ERROR_INVALID_DEVICE_ADDRESS_EXT:
+      return "Invalid device address";
+#endif

    case VK_RESULT_RANGE_SIZE:
    case VK_RESULT_MAX_ENUM:
@@ -224,7 +224,8 @@ endif
 # FIXME: might have to add '-xobjective-c' to c_args for quartz backend?
 libgdk = static_library('gdk',
  sources: [gdk_sources, gdk_backends_gen_headers, gdkconfig],
-  dependencies: gdk_deps,
+  dependencies: gdk_deps + [libgtk_css_dep],
+  link_with: [libgtk_css, ],
  include_directories: [confinc, gdkx11_inc, wlinc],
  c_args: [
    '-DGDK_COMPILATION',
@@ -239,4 +240,4 @@ libgdk = static_library('gdk',
 libgdk_dep = declare_dependency(
  sources: ['gdk.h', gdkconfig, gdkenum_h],
  include_directories: [confinc, gdkx11_inc, wlinc],
-  dependencies: gdk_deps)
+  dependencies: gdk_deps + [libgtk_css_dep])
@@ -1618,17 +1618,6 @@ gdk_surface_quartz_get_device_state (GdkSurface       *window,
                                                    x, y, mask) != NULL;
 }

-static void
-gdk_quartz_surface_set_urgency_hint (GdkSurface *window,
-                                    gboolean   urgent)
-{
-  if (GDK_SURFACE_DESTROYED (window) ||
-      !SURFACE_IS_TOPLEVEL (window))
-    return;
-
-  /* FIXME: Implement */
-}
-
 static void
 gdk_quartz_surface_set_geometry_hints (GdkSurface         *window,
                                      const GdkGeometry *geometry,
@@ -1997,28 +1986,6 @@ gdk_quartz_surface_set_modal_hint (GdkSurface *window,
  /* FIXME: Implement */
 }

-static void
-gdk_quartz_surface_set_skip_taskbar_hint (GdkSurface *window,
-                                         gboolean   skips_taskbar)
-{
-  if (GDK_SURFACE_DESTROYED (window) ||
-      !SURFACE_IS_TOPLEVEL (window))
-    return;
-
-  /* FIXME: Implement */
-}
-
-static void
-gdk_quartz_surface_set_skip_pager_hint (GdkSurface *window,
-                                       gboolean   skips_pager)
-{
-  if (GDK_SURFACE_DESTROYED (window) ||
-      !SURFACE_IS_TOPLEVEL (window))
-    return;
-
-  /* FIXME: Implement */
-}
-
 static void
 gdk_quartz_surface_begin_resize_drag (GdkSurface     *window,
                                     GdkSurfaceEdge  edge,
@@ -2617,27 +2584,6 @@ gdk_quartz_surface_set_keep_below (GdkSurface *window,
  [impl->toplevel setLevel: level - (setting ? 1 : 0)];
 }

-static GdkSurface *
-gdk_quartz_surface_get_group (GdkSurface *window)
-{
-  g_return_val_if_fail (GDK_SURFACE_TYPE (window) != GDK_SURFACE_CHILD, NULL);
-
-  if (GDK_SURFACE_DESTROYED (window) ||
-      !SURFACE_IS_TOPLEVEL (window))
-    return NULL;
-
-  /* FIXME: Implement */
-
-  return NULL;
-}
-
-static void
-gdk_quartz_surface_set_group (GdkSurface *window,
-                             GdkSurface *leader)
-{
-  /* FIXME: Implement */	
-}
-
 static void
 gdk_quartz_surface_destroy_notify (GdkSurface *window)
 {
@@ -2738,9 +2684,6 @@ gdk_surface_impl_quartz_class_init (GdkSurfaceImplQuartzClass *klass)
  impl_class->set_type_hint = gdk_quartz_surface_set_type_hint;
  impl_class->get_type_hint = gdk_quartz_surface_get_type_hint;
  impl_class->set_modal_hint = gdk_quartz_surface_set_modal_hint;
-  impl_class->set_skip_taskbar_hint = gdk_quartz_surface_set_skip_taskbar_hint;
-  impl_class->set_skip_pager_hint = gdk_quartz_surface_set_skip_pager_hint;
-  impl_class->set_urgency_hint = gdk_quartz_surface_set_urgency_hint;
  impl_class->set_geometry_hints = gdk_quartz_surface_set_geometry_hints;
  impl_class->set_title = gdk_quartz_surface_set_title;
  impl_class->set_startup_id = gdk_quartz_surface_set_startup_id;
@@ -2760,8 +2703,6 @@ gdk_surface_impl_quartz_class_init (GdkSurfaceImplQuartzClass *klass)
  impl_class->unfullscreen = gdk_quartz_surface_unfullscreen;
  impl_class->set_keep_above = gdk_quartz_surface_set_keep_above;
  impl_class->set_keep_below = gdk_quartz_surface_set_keep_below;
-  impl_class->get_group = gdk_quartz_surface_get_group;
-  impl_class->set_group = gdk_quartz_surface_set_group;
  impl_class->set_decorations = gdk_quartz_surface_set_decorations;
  impl_class->get_decorations = gdk_quartz_surface_get_decorations;
  impl_class->set_functions = gdk_quartz_surface_set_functions;
@@ -169,14 +169,7 @@ _gdk_wayland_cursor_get_buffer (GdkWaylandDisplay *display,
      struct wl_cursor *c;

      if (g_str_equal (gdk_cursor_get_name (cursor), "none"))
-        {
-          *hotspot_x = 0;
-          *hotspot_y = 0;
-          *width = 0;
-          *height = 0;
-          *scale = 1;
-          return NULL;
-        }
+        goto none;

      c = gdk_wayland_cursor_load_for_name (display,
                                            _gdk_wayland_display_get_scaled_cursor_theme (display, desired_scale),
@@ -250,6 +243,13 @@ _gdk_wayland_cursor_get_buffer (GdkWaylandDisplay *display,
                                           width, height,
                                           scale);

+none:
+  *hotspot_x = 0;
+  *hotspot_y = 0;
+  *width = 0;
+  *height = 0;
+  *scale = 1;
+
  return NULL;
 }

@@ -103,6 +103,7 @@ struct _GdkWaylandPointerData {
  uint32_t grab_time;

  struct wl_surface *pointer_surface;
+  guint cursor_is_default: 1;
  GdkCursor *cursor;
  guint cursor_timeout_id;
  guint cursor_image_index;
@@ -284,6 +285,10 @@ struct _GdkWaylandDevicePadClass
 };

 static void gdk_wayland_device_pad_iface_init (GdkDevicePadInterface *iface);
+static void init_pointer_data (GdkWaylandPointerData *pointer_data,
+                               GdkDisplay            *display_wayland,
+                               GdkDevice             *master);
+static void pointer_surface_update_scale (GdkDevice *device);

 #define GDK_TYPE_WAYLAND_DEVICE_PAD (gdk_wayland_device_pad_get_type ())
 GType gdk_wayland_device_pad_get_type (void);
@@ -482,9 +487,9 @@ gdk_wayland_device_update_surface_cursor (GdkDevice *device)
 }

 static void
-gdk_wayland_device_set_surface_cursor (GdkDevice *device,
-                                      GdkSurface *surface,
-                                      GdkCursor *cursor)
+gdk_wayland_device_set_surface_cursor (GdkDevice  *device,
+                                       GdkSurface *surface,
+                                       GdkCursor  *cursor)
 {
  GdkWaylandSeat *seat = GDK_WAYLAND_SEAT (gdk_device_get_seat (device));
  GdkWaylandPointerData *pointer = GDK_WAYLAND_DEVICE (device)->pointer;
@@ -495,26 +500,35 @@ gdk_wayland_device_set_surface_cursor (GdkDevice *device,
  if (seat->grab_cursor)
    cursor = seat->grab_cursor;

-  if (cursor == NULL)
-    cursor = gdk_cursor_new_from_name ("default", NULL);
-  else
-    cursor = g_object_ref (cursor);
-
  if (pointer->cursor != NULL &&
+      cursor != NULL &&
      gdk_cursor_equal (cursor, pointer->cursor))
+    return;
+
+  if (cursor == NULL)
    {
-      g_object_unref (cursor);
-      return;
+      if (!pointer->cursor_is_default)
+        {
+          g_clear_object (&pointer->cursor);
+          pointer->cursor = gdk_cursor_new_from_name ("default", NULL);
+          pointer->cursor_is_default = TRUE;
+
+          gdk_wayland_pointer_stop_cursor_animation (pointer);
+          gdk_wayland_device_update_surface_cursor (device);
+        }
+      else
+        {
+          /* Nothing to do, we'already using the default cursor */
+        }
    }
+  else
+    {
+      g_set_object (&pointer->cursor, cursor);
+      pointer->cursor_is_default = FALSE;

-  gdk_wayland_pointer_stop_cursor_animation (pointer);
-
-  if (pointer->cursor)
-    g_object_unref (pointer->cursor);
-
-  pointer->cursor = cursor;
-
-  gdk_wayland_device_update_surface_cursor (device);
+      gdk_wayland_pointer_stop_cursor_animation (pointer);
+      gdk_wayland_device_update_surface_cursor (device);
+    }
 }

 static void
@@ -1994,7 +2008,7 @@ keyboard_handle_leave (void               *data,

  GDK_DISPLAY_NOTE (seat->display, EVENTS,
            g_message ("focus out, seat %p surface %p",
-                       seat, seat->keyboard_focus));
+                       seat, event->any.surface));

  _gdk_wayland_display_deliver_event (seat->display, event);
 }
@@ -2119,10 +2133,11 @@ deliver_key_event (GdkWaylandSeat *seat,
  _gdk_wayland_display_deliver_event (seat->display, event);

  GDK_DISPLAY_NOTE (seat->display, EVENTS,
-            g_message ("keyboard %s event%s, code %d, sym %d, "
+            g_message ("keyboard %s event%s, surface %p, code %d, sym %d, "
                       "mods 0x%x",
                       (state ? "press" : "release"),
                       (from_key_repeat ? " (repeat)" : ""),
+                       event->any.surface,
                       event->key.hardware_keycode, event->key.keyval,
                       event->key.state));

@@ -2877,6 +2892,8 @@ tablet_handle_done (void                 *data,
                                NULL);

  tablet->master = master;
+  init_pointer_data (&tablet->pointer_info, display, tablet->master);
+
  tablet->stylus_device = stylus_device;
  tablet->eraser_device = eraser_device;

@@ -3488,6 +3505,11 @@ tablet_tool_handle_proximity_in (void                      *data,
  gdk_event_set_source_device (event, tablet->current_device);
  gdk_event_set_device_tool (event, tool->tool);

+  tablet->pointer_info.pointer_surface_outputs =
+    g_slist_append (tablet->pointer_info.pointer_surface_outputs,
+                    gdk_wayland_surface_get_wl_output (surface));
+  pointer_surface_update_scale (tablet->master);
+
  GDK_DISPLAY_NOTE (seat->display, EVENTS,
            g_message ("proximity in, seat %p surface %p tool %d",
                       seat, tablet->pointer_info.focus,
@@ -3515,7 +3537,11 @@ tablet_tool_handle_proximity_out (void                      *data,

  gdk_wayland_pointer_stop_cursor_animation (&tablet->pointer_info);

-  gdk_wayland_device_update_surface_cursor (tablet->master);
+  tablet->pointer_info.pointer_surface_outputs =
+    g_slist_remove (tablet->pointer_info.pointer_surface_outputs,
+                    gdk_wayland_surface_get_wl_output (tablet->pointer_info.focus));
+  pointer_surface_update_scale (tablet->master);
+
  g_object_unref (tablet->pointer_info.focus);
  tablet->pointer_info.focus = NULL;

@@ -4315,14 +4341,11 @@ tablet_seat_handle_tablet_added (void                      *data,
                                 struct zwp_tablet_v2      *wp_tablet)
 {
  GdkWaylandSeat *seat = data;
-  GdkWaylandDisplay *display_wayland = GDK_WAYLAND_DISPLAY (seat->display);
  GdkWaylandTabletData *tablet;

  tablet = g_new0 (GdkWaylandTabletData, 1);
  tablet->seat = GDK_SEAT (seat);
-  tablet->pointer_info.current_output_scale = 1;
-  tablet->pointer_info.pointer_surface =
-    wl_compositor_create_surface (display_wayland->compositor);
+
  tablet->wp_tablet = wp_tablet;

  seat->tablets = g_list_prepend (seat->tablets, tablet);
@@ -4439,7 +4462,15 @@ pointer_surface_update_scale (GdkDevice *device)
 void
 gdk_wayland_seat_update_cursor_scale (GdkWaylandSeat *seat)
 {
+  GList *l;
+
  pointer_surface_update_scale (seat->master_pointer);
+
+  for (l = seat->tablets; l; l = l->next)
+    {
+      GdkWaylandTabletData *tablet = l->data;
+      pointer_surface_update_scale (tablet->master);
+    }
 }

 static void
@@ -4448,16 +4479,28 @@ pointer_surface_enter (void              *data,
                       struct wl_output  *output)

 {
-  GdkWaylandSeat *seat = data;
+  GdkDevice *device = data;
+  GdkWaylandSeat *seat = GDK_WAYLAND_SEAT (gdk_device_get_seat (device));
+  GdkWaylandTabletData *tablet;

  GDK_DISPLAY_NOTE (seat->display, EVENTS,
            g_message ("pointer surface of seat %p entered output %p",
                       seat, output));

-  seat->pointer_info.pointer_surface_outputs =
-    g_slist_append (seat->pointer_info.pointer_surface_outputs, output);
+  tablet = gdk_wayland_seat_find_tablet (seat, device);

-  pointer_surface_update_scale (seat->master_pointer);
+  if (tablet)
+    {
+      tablet->pointer_info.pointer_surface_outputs =
+        g_slist_append (seat->pointer_info.pointer_surface_outputs, output);
+    }
+  else
+    {
+      seat->pointer_info.pointer_surface_outputs =
+        g_slist_append (seat->pointer_info.pointer_surface_outputs, output);
+    }
+
+  pointer_surface_update_scale (device);
 }

 static void
@@ -4465,16 +4508,28 @@ pointer_surface_leave (void              *data,
                       struct wl_surface *wl_surface,
                       struct wl_output  *output)
 {
-  GdkWaylandSeat *seat = data;
+  GdkDevice *device = data;
+  GdkWaylandSeat *seat = GDK_WAYLAND_SEAT (gdk_device_get_seat (device));
+  GdkWaylandTabletData *tablet;

  GDK_DISPLAY_NOTE (seat->display, EVENTS,
            g_message ("pointer surface of seat %p left output %p",
                       seat, output));

-  seat->pointer_info.pointer_surface_outputs =
-    g_slist_remove (seat->pointer_info.pointer_surface_outputs, output);
+  tablet = gdk_wayland_seat_find_tablet (seat, device);

-  pointer_surface_update_scale (seat->master_pointer);
+  if (tablet)
+    {
+      tablet->pointer_info.pointer_surface_outputs =
+        g_slist_remove (seat->pointer_info.pointer_surface_outputs, output);
+    }
+  else
+    {
+      seat->pointer_info.pointer_surface_outputs =
+        g_slist_remove (seat->pointer_info.pointer_surface_outputs, output);
+    }
+
+  pointer_surface_update_scale (device);
 }

 static const struct wl_surface_listener pointer_surface_listener = {
@@ -4842,6 +4897,23 @@ gdk_wayland_seat_init (GdkWaylandSeat *seat)
 {
 }

+static void
+init_pointer_data (GdkWaylandPointerData *pointer_data,
+                   GdkDisplay            *display,
+                   GdkDevice             *master)
+{
+  GdkWaylandDisplay *display_wayland;
+
+  display_wayland = GDK_WAYLAND_DISPLAY (display);
+
+  pointer_data->current_output_scale = 1;
+  pointer_data->pointer_surface =
+    wl_compositor_create_surface (display_wayland->compositor);
+  wl_surface_add_listener (pointer_data->pointer_surface,
+                           &pointer_surface_listener,
+                           master);
+}
+
 void
 _gdk_wayland_display_create_seat (GdkWaylandDisplay *display_wayland,
                                  guint32            id,
@@ -4880,14 +4952,8 @@ _gdk_wayland_display_create_seat (GdkWaylandDisplay *display_wayland,
  wl_data_device_add_listener (seat->data_device,
                               &data_device_listener, seat);

-  seat->pointer_info.current_output_scale = 1;
-  seat->pointer_info.pointer_surface =
-    wl_compositor_create_surface (display_wayland->compositor);
-  wl_surface_add_listener (seat->pointer_info.pointer_surface,
-                           &pointer_surface_listener,
-                           seat);
-
  init_devices (seat);
+  init_pointer_data (&seat->pointer_info, display, seat->master_pointer);

  if (display_wayland->tablet_manager)
    {
@@ -4962,31 +5028,29 @@ _gdk_wayland_device_get_implicit_grab_serial (GdkWaylandDevice *device,
        }
    }

-    return GDK_WAYLAND_SEAT (seat)->pointer_info.press_serial;
+  return GDK_WAYLAND_SEAT (seat)->pointer_info.press_serial;
 }

 uint32_t
-_gdk_wayland_seat_get_last_implicit_grab_serial (GdkSeat           *seat,
+_gdk_wayland_seat_get_last_implicit_grab_serial (GdkWaylandSeat    *seat,
                                                 GdkEventSequence **sequence)
 {
-  GdkWaylandSeat *wayland_seat;
  GdkWaylandTouchData *touch;
  GHashTableIter iter;
  GList *l;
  uint32_t serial;

-  wayland_seat = GDK_WAYLAND_SEAT (seat);
-  g_hash_table_iter_init (&iter, wayland_seat->touches);
+  g_hash_table_iter_init (&iter, seat->touches);

  if (sequence)
    *sequence = NULL;

-  serial = wayland_seat->keyboard_key_serial;
+  serial = seat->keyboard_key_serial;

-  if (wayland_seat->pointer_info.press_serial > serial)
-    serial = wayland_seat->pointer_info.press_serial;
+  if (seat->pointer_info.press_serial > serial)
+    serial = seat->pointer_info.press_serial;

-  for (l = wayland_seat->tablets; l; l = l->next)
+  for (l = seat->tablets; l; l = l->next)
    {
      GdkWaylandTabletData *tablet = l->data;

@@ -396,6 +396,8 @@ static void gdk_wayland_display_add_output        (GdkWaylandDisplay *display_wa
                                                   guint32            version);
 static void gdk_wayland_display_remove_output     (GdkWaylandDisplay *display_wayland,
                                                   guint32            id);
+static void gdk_wayland_display_init_xdg_output   (GdkWaylandDisplay *display_wayland);
+static void gdk_wayland_display_get_xdg_output    (GdkWaylandMonitor *monitor);

 static void
 gdk_registry_handle_global (void               *data,
@@ -527,6 +529,13 @@ gdk_registry_handle_global (void               *data,
                                                           &server_decoration_listener,
                                                           display_wayland);
    }
+  else if (strcmp(interface, "zxdg_output_manager_v1") == 0)
+    {
+      display_wayland->xdg_output_manager =
+            wl_registry_bind (registry, id, &zxdg_output_manager_v1_interface, 1);
+      gdk_wayland_display_init_xdg_output (display_wayland);
+      _gdk_wayland_display_async_roundtrip (display_wayland);
+    }

  g_hash_table_insert (display_wayland->known_globals,
                       GUINT_TO_POINTER (id), g_strdup (interface));
@@ -2170,6 +2179,123 @@ update_scale (GdkDisplay *display)
  g_list_free (seats);
 }

+static void
+gdk_wayland_display_init_xdg_output (GdkWaylandDisplay *display_wayland)
+{
+  int i;
+
+  GDK_NOTE (MISC,
+            g_message ("init xdg-output support, %d monitor(s) already present",
+                       display_wayland->monitors->len));
+
+  for (i = 0; i < display_wayland->monitors->len; i++)
+    gdk_wayland_display_get_xdg_output (display_wayland->monitors->pdata[i]);
+}
+
+static gboolean
+display_has_xdg_output_support (GdkWaylandDisplay *display_wayland)
+{
+  return (display_wayland->xdg_output_manager != NULL);
+}
+
+static gboolean
+monitor_has_xdg_output (GdkWaylandMonitor *monitor)
+{
+  return (monitor->xdg_output != NULL);
+}
+
+static gboolean
+should_update_monitor (GdkWaylandMonitor *monitor)
+{
+  return (GDK_MONITOR (monitor)->geometry.width != 0 &&
+          monitor->version < OUTPUT_VERSION_WITH_DONE);
+}
+
+static void
+apply_monitor_change (GdkWaylandMonitor *monitor)
+{
+  GDK_NOTE (MISC,
+            g_message ("monitor %d changed position %d %d, size %d %d",
+                       monitor->id,
+                       monitor->x, monitor->y,
+                       monitor->width, monitor->height));
+
+  gdk_monitor_set_position (GDK_MONITOR (monitor), monitor->x, monitor->y);
+  gdk_monitor_set_size (GDK_MONITOR (monitor), monitor->width, monitor->height);
+  monitor->wl_output_done = FALSE;
+  monitor->xdg_output_done = FALSE;
+
+  update_scale (GDK_MONITOR (monitor)->display);
+}
+
+static void
+xdg_output_handle_logical_position (void                  *data,
+                                    struct zxdg_output_v1 *xdg_output,
+                                    int32_t                x,
+                                    int32_t                y)
+{
+  GdkWaylandMonitor *monitor = (GdkWaylandMonitor *) data;
+
+  GDK_NOTE (MISC,
+            g_message ("handle logical position xdg-output %d, position %d %d",
+                       monitor->id, x, y));
+  monitor->x = x;
+  monitor->y = y;
+}
+
+static void
+xdg_output_handle_logical_size (void                  *data,
+                                struct zxdg_output_v1 *xdg_output,
+                                int32_t                width,
+                                int32_t                height)
+{
+  GdkWaylandMonitor *monitor = (GdkWaylandMonitor *) data;
+
+  GDK_NOTE (MISC,
+            g_message ("handle logical size xdg-output %d, size %d %d",
+                       monitor->id, width, height));
+  monitor->width = width;
+  monitor->height = height;
+}
+
+static void
+xdg_output_handle_done (void                  *data,
+                        struct zxdg_output_v1 *xdg_output)
+{
+  GdkWaylandMonitor *monitor = (GdkWaylandMonitor *) data;
+
+  GDK_NOTE (MISC,
+            g_message ("handle done xdg-output %d", monitor->id));
+
+  monitor->xdg_output_done = TRUE;
+  if (monitor->wl_output_done)
+    apply_monitor_change (monitor);
+}
+
+static const struct zxdg_output_v1_listener xdg_output_listener = {
+    xdg_output_handle_logical_position,
+    xdg_output_handle_logical_size,
+    xdg_output_handle_done,
+};
+
+static void
+gdk_wayland_display_get_xdg_output (GdkWaylandMonitor *monitor)
+{
+  GdkDisplay *display = GDK_MONITOR (monitor)->display;
+  GdkWaylandDisplay *display_wayland = GDK_WAYLAND_DISPLAY (display);
+
+  GDK_NOTE (MISC,
+            g_message ("get xdg-output for monitor %d", monitor->id));
+
+  monitor->xdg_output =
+    zxdg_output_manager_v1_get_xdg_output (display_wayland->xdg_output_manager,
+                                           monitor->output);
+
+  zxdg_output_v1_add_listener (monitor->xdg_output,
+                               &xdg_output_listener,
+                               monitor);
+}
+
 static void
 output_handle_geometry (void             *data,
                        struct wl_output *wl_output,
@@ -2188,13 +2314,17 @@ output_handle_geometry (void             *data,
            g_message ("handle geometry output %d, position %d %d, phys. size %d %d, subpixel layout %s, manufacturer %s, model %s, transform %s",
                       monitor->id, x, y, physical_width, physical_height, subpixel_to_string (subpixel), make, model, transform_to_string (transform)));

-  gdk_monitor_set_position (GDK_MONITOR (monitor), x, y);
+  monitor->x = x;
+  monitor->y = y;
  gdk_monitor_set_physical_size (GDK_MONITOR (monitor), physical_width, physical_height);
  gdk_monitor_set_subpixel_layout (GDK_MONITOR (monitor), subpixel);
  gdk_monitor_set_manufacturer (GDK_MONITOR (monitor), make);
  gdk_monitor_set_model (GDK_MONITOR (monitor), model);

-  if (GDK_MONITOR (monitor)->geometry.width != 0 && monitor->version < OUTPUT_VERSION_WITH_DONE)
+  if (should_update_monitor (monitor) || !monitor_has_xdg_output (monitor))
+    apply_monitor_change (monitor);
+
+  if (should_update_monitor (monitor))
    update_scale (GDK_MONITOR (monitor)->display);
 }

@@ -2203,19 +2333,14 @@ output_handle_done (void             *data,
                    struct wl_output *wl_output)
 {
  GdkWaylandMonitor *monitor = (GdkWaylandMonitor *)data;
-  GdkDisplay *display = gdk_monitor_get_display (GDK_MONITOR (monitor));

  GDK_NOTE (MISC,
            g_message ("handle done output %d", monitor->id));

-  if (!monitor->added)
-    {
-      monitor->added = TRUE;
-      g_ptr_array_add (GDK_WAYLAND_DISPLAY (display)->monitors, monitor);
-      gdk_display_monitor_added (display, GDK_MONITOR (monitor));
-    }
+  monitor->wl_output_done = TRUE;

-  update_scale (display);
+  if (!monitor_has_xdg_output (monitor) || monitor->xdg_output_done)
+    apply_monitor_change (monitor);
 }

 static void
@@ -2232,6 +2357,9 @@ output_handle_scale (void             *data,
  GDK_NOTE (MISC,
            g_message ("handle scale output %d, scale %d", monitor->id, scale));

+  if (monitor_has_xdg_output (monitor))
+    return;
+
  gdk_monitor_get_geometry (GDK_MONITOR (monitor), &previous_geometry);
  previous_scale = gdk_monitor_get_scale_factor (GDK_MONITOR (monitor));

@@ -2239,10 +2367,11 @@ output_handle_scale (void             *data,
  height = previous_geometry.height * previous_scale;

  gdk_monitor_set_scale_factor (GDK_MONITOR (monitor), scale);
-  gdk_monitor_set_size (GDK_MONITOR (monitor), width / scale, height / scale);
+  monitor->width = width / scale;
+  monitor->height = height / scale;

-  if (GDK_MONITOR (monitor)->geometry.width != 0 && monitor->version < OUTPUT_VERSION_WITH_DONE)
-    update_scale (GDK_MONITOR (monitor)->display);
+  if (should_update_monitor (monitor))
+    apply_monitor_change (monitor);
 }

 static void
@@ -2264,11 +2393,12 @@ output_handle_mode (void             *data,
    return;

  scale = gdk_monitor_get_scale_factor (GDK_MONITOR (monitor));
-  gdk_monitor_set_size (GDK_MONITOR (monitor), width / scale, height / scale);
+  monitor->width = width / scale;
+  monitor->height = height / scale;
  gdk_monitor_set_refresh_rate (GDK_MONITOR (monitor), refresh);

-  if (width != 0 && monitor->version < OUTPUT_VERSION_WITH_DONE)
-    update_scale (GDK_MONITOR (monitor)->display);
+  if (should_update_monitor (monitor) || !monitor_has_xdg_output (monitor))
+    apply_monitor_change (monitor);
 }

 static const struct wl_output_listener output_listener =
@@ -2295,13 +2425,17 @@ gdk_wayland_display_add_output (GdkWaylandDisplay *display_wayland,
  monitor->output = output;
  monitor->version = version;

-  if (monitor->version < OUTPUT_VERSION_WITH_DONE)
-    {
-      g_ptr_array_add (display_wayland->monitors, monitor);
-      gdk_display_monitor_added (GDK_DISPLAY (display_wayland), GDK_MONITOR (monitor));
-    }
+  g_ptr_array_add (display_wayland->monitors, monitor);
+  gdk_display_monitor_added (GDK_DISPLAY (display_wayland), GDK_MONITOR (monitor));

  wl_output_add_listener (output, &output_listener, monitor);
+
+  GDK_NOTE (MISC,
+            g_message ("xdg_output_manager %p",
+                       display_wayland->xdg_output_manager));
+
+  if (display_has_xdg_output_support (display_wayland))
+    gdk_wayland_display_get_xdg_output (monitor);
 }

 struct wl_output *
@@ -35,6 +35,7 @@
 #include <gdk/wayland/xdg-foreign-unstable-v1-client-protocol.h>
 #include <gdk/wayland/keyboard-shortcuts-inhibit-unstable-v1-client-protocol.h>
 #include <gdk/wayland/server-decoration-client-protocol.h>
+#include <gdk/wayland/xdg-output-unstable-v1-client-protocol.h>

 #include <glib.h>
 #include <gdk/gdkkeys.h>
@@ -109,6 +110,7 @@ struct _GdkWaylandDisplay
  struct zxdg_importer_v1 *xdg_importer;
  struct zwp_keyboard_shortcuts_inhibit_manager_v1 *keyboard_shortcuts_inhibit;
  struct org_kde_kwin_server_decoration_manager *server_decoration_manager;
+  struct zxdg_output_manager_v1 *xdg_output_manager;

  GList *async_roundtrips;

@@ -151,6 +151,9 @@ _gdk_wayland_display_deliver_event (GdkDisplay *display,
 {
  GList *node;

+  if (!check_event_sanity (event))
+    g_warning ("Snap! delivering insane events\n");
+
  node = _gdk_event_queue_append (display, event);
  _gdk_windowing_got_event (display, node, event,
                            _gdk_display_get_next_serial (display));
@@ -30,6 +30,15 @@ struct _GdkWaylandMonitor {
  guint32 version;
  struct wl_output *output;
  gboolean added;
+
+  struct zxdg_output_v1 *xdg_output;
+  /* Size and position, can be either from wl_output or xdg_output */
+  int32_t x;
+  int32_t y;
+  int32_t width;
+  int32_t height;
+  gboolean wl_output_done;
+  gboolean xdg_output_done;
 };

 struct _GdkWaylandMonitorClass {
@@ -34,6 +34,7 @@
 #include <gdk/gdkcursor.h>
 #include <gdk/wayland/gdkwayland.h>
 #include <gdk/wayland/gdkdisplay-wayland.h>
+#include <gdk/wayland/gdkseat-wayland.h>

 #include <xkbcommon/xkbcommon.h>

@@ -138,7 +139,7 @@ void        _gdk_wayland_display_remove_seat    (GdkWaylandDisplay       *displa
 GdkKeymap *_gdk_wayland_device_get_keymap (GdkDevice *device);
 uint32_t _gdk_wayland_device_get_implicit_grab_serial(GdkWaylandDevice *device,
                                                      const GdkEvent   *event);
-uint32_t _gdk_wayland_seat_get_last_implicit_grab_serial (GdkSeat           *seat,
+uint32_t _gdk_wayland_seat_get_last_implicit_grab_serial (GdkWaylandSeat     *seat,
                                                          GdkEventSequence **seqence);
 struct wl_data_device * gdk_wayland_device_get_data_device (GdkDevice *gdk_device);
 void gdk_wayland_device_set_selection (GdkDevice             *gdk_device,
@@ -33,6 +33,7 @@
 #include "gdkdeviceprivate.h"
 #include "gdkprivate-wayland.h"
 #include "gdkmonitor-wayland.h"
+#include "gdkseat-wayland.h"
 #include <wayland/xdg-shell-unstable-v6-client-protocol.h>

 #include <stdlib.h>
@@ -861,7 +862,7 @@ gdk_wayland_surface_update_dialogs (GdkSurface *surface)
      GdkSurface *w = l->data;
      GdkSurfaceImplWayland *impl;

-      if (!GDK_IS_SURFACE_IMPL_WAYLAND(w->impl))
+      if (!GDK_IS_SURFACE_IMPL_WAYLAND (w->impl))
        continue;

      impl = GDK_SURFACE_IMPL_WAYLAND (w->impl);
@@ -2185,14 +2186,12 @@ create_simple_positioner (GdkSurface *surface,
 static void
 gdk_wayland_surface_create_xdg_popup (GdkSurface     *surface,
                                      GdkSurface     *parent,
-                                      struct wl_seat *seat)
+                                      GdkWaylandSeat *grab_input_seat)
 {
  GdkWaylandDisplay *display = GDK_WAYLAND_DISPLAY (gdk_surface_get_display (surface));
  GdkSurfaceImplWayland *impl = GDK_SURFACE_IMPL_WAYLAND (surface->impl);
  GdkSurfaceImplWayland *parent_impl = GDK_SURFACE_IMPL_WAYLAND (parent->impl);
  gpointer positioner;
-  GdkSeat *gdk_seat;
-  guint32 serial;

  if (!impl->display_server.wl_surface)
    return;
@@ -2210,10 +2209,11 @@ gdk_wayland_surface_create_xdg_popup (GdkSurface     *surface,
      g_warning ("Can't map popup, already mapped");
      return;
    }
-  if ((display->current_popups &&
-       g_list_last (display->current_popups)->data != parent) ||
-      (!display->current_popups &&
-       !is_realized_toplevel (parent)))
+  if (grab_input_seat &&
+      ((display->current_popups &&
+        g_list_last (display->current_popups)->data != parent) ||
+       (!display->current_popups &&
+        !is_realized_toplevel (parent))))
    {
      g_warning ("Tried to map a popup with a non-top most parent");
      return;
@@ -2264,10 +2264,13 @@ gdk_wayland_surface_create_xdg_popup (GdkSurface     *surface,
      g_assert_not_reached ();
    }

-  if (seat)
+  if (grab_input_seat)
    {
-      gdk_seat = gdk_display_get_default_seat (GDK_DISPLAY (display));
-      serial = _gdk_wayland_seat_get_last_implicit_grab_serial (gdk_seat, NULL);
+      struct wl_seat *seat;
+      guint32 serial;
+
+      seat = gdk_wayland_seat_get_wl_seat (GDK_SEAT (grab_input_seat));
+      serial = _gdk_wayland_seat_get_last_implicit_grab_serial (grab_input_seat, NULL);

      switch (display->shell_variant)
        {
@@ -2288,7 +2291,7 @@ gdk_wayland_surface_create_xdg_popup (GdkSurface     *surface,
  display->current_popups = g_list_append (display->current_popups, surface);
 }

-static struct wl_seat *
+static GdkWaylandSeat *
 find_grab_input_seat (GdkSurface *surface,
                      GdkSurface *transient_for)
 {
@@ -2301,7 +2304,7 @@ find_grab_input_seat (GdkSurface *surface,
   * grab before showing the popup surface.
   */
  if (impl->grab_input_seat)
-    return gdk_wayland_seat_get_wl_seat (impl->grab_input_seat);
+    return GDK_WAYLAND_SEAT (impl->grab_input_seat);

  /* HACK: GtkMenu grabs a special surface known as the "grab transfer surface"
   * and then transfers the grab over to the correct surface later. Look for
@@ -2314,7 +2317,7 @@ find_grab_input_seat (GdkSurface *surface,
    {
      tmp_impl = GDK_SURFACE_IMPL_WAYLAND (attached_grab_surface->impl);
      if (tmp_impl->grab_input_seat)
-        return gdk_wayland_seat_get_wl_seat (tmp_impl->grab_input_seat);
+        return GDK_WAYLAND_SEAT (tmp_impl->grab_input_seat);
    }

  while (transient_for)
@@ -2322,7 +2325,7 @@ find_grab_input_seat (GdkSurface *surface,
      tmp_impl = GDK_SURFACE_IMPL_WAYLAND (transient_for->impl);

      if (tmp_impl->grab_input_seat)
-        return gdk_wayland_seat_get_wl_seat (tmp_impl->grab_input_seat);
+        return GDK_WAYLAND_SEAT (tmp_impl->grab_input_seat);

      transient_for = tmp_impl->transient_for;
    }
@@ -2418,7 +2421,7 @@ gdk_wayland_surface_map (GdkSurface *surface)
  if (should_map_as_popup (surface))
    {
      gboolean create_fallback = FALSE;
-      struct wl_seat *grab_input_seat;
+      GdkWaylandSeat *grab_input_seat;

      /* Popup menus can appear without a transient parent, which means they
       * cannot be positioned properly on Wayland. This attempts to guess the
@@ -2492,8 +2495,8 @@ gdk_wayland_surface_map (GdkSurface *surface)
      if (!create_fallback)
        {
          gdk_wayland_surface_create_xdg_popup (surface,
-                                               transient_for,
-                                               grab_input_seat);
+                                                transient_for,
+                                                grab_input_seat);
        }
      else
        {
@@ -3063,24 +3066,6 @@ gdk_wayland_surface_set_modal_hint (GdkSurface *surface,
  maybe_set_gtk_surface_modal (surface);
 }

-static void
-gdk_wayland_surface_set_skip_taskbar_hint (GdkSurface *surface,
-                                           gboolean    skips_taskbar)
-{
-}
-
-static void
-gdk_wayland_surface_set_skip_pager_hint (GdkSurface *surface,
-                                         gboolean    skips_pager)
-{
-}
-
-static void
-gdk_wayland_surface_set_urgency_hint (GdkSurface *surface,
-                                      gboolean    urgent)
-{
-}
-
 static void
 gdk_wayland_surface_set_geometry_hints (GdkSurface         *surface,
                                        const GdkGeometry  *geometry,
@@ -3517,18 +3502,6 @@ gdk_wayland_surface_set_keep_below (GdkSurface *surface,
 {
 }

-static GdkSurface *
-gdk_wayland_surface_get_group (GdkSurface *surface)
-{
-  return NULL;
-}
-
-static void
-gdk_wayland_surface_set_group (GdkSurface *surface,
-                               GdkSurface *leader)
-{
-}
-
 static void
 gdk_wayland_surface_set_decorations (GdkSurface      *surface,
                                     GdkWMDecoration  decorations)
@@ -3611,7 +3584,7 @@ gdk_wayland_surface_begin_resize_drag (GdkSurface     *surface,
  if (!is_realized_toplevel (surface))
    return;

-  serial = _gdk_wayland_seat_get_last_implicit_grab_serial (gdk_device_get_seat (device),
+  serial = _gdk_wayland_seat_get_last_implicit_grab_serial (GDK_WAYLAND_SEAT (gdk_device_get_seat (device)),
                                                            &sequence);

  switch (display_wayland->shell_variant)
@@ -3662,7 +3635,7 @@ gdk_wayland_surface_begin_move_drag (GdkSurface *surface,
  if (!is_realized_toplevel (surface))
    return;

-  serial = _gdk_wayland_seat_get_last_implicit_grab_serial (gdk_device_get_seat (device),
+  serial = _gdk_wayland_seat_get_last_implicit_grab_serial (GDK_WAYLAND_SEAT (gdk_device_get_seat (device)),
                                                            &sequence);
  switch (display_wayland->shell_variant)
    {
@@ -3846,9 +3819,6 @@ _gdk_surface_impl_wayland_class_init (GdkSurfaceImplWaylandClass *klass)
  impl_class->set_type_hint = gdk_wayland_surface_set_type_hint;
  impl_class->get_type_hint = gdk_wayland_surface_get_type_hint;
  impl_class->set_modal_hint = gdk_wayland_surface_set_modal_hint;
-  impl_class->set_skip_taskbar_hint = gdk_wayland_surface_set_skip_taskbar_hint;
-  impl_class->set_skip_pager_hint = gdk_wayland_surface_set_skip_pager_hint;
-  impl_class->set_urgency_hint = gdk_wayland_surface_set_urgency_hint;
  impl_class->set_geometry_hints = gdk_wayland_surface_set_geometry_hints;
  impl_class->set_title = gdk_wayland_surface_set_title;
  impl_class->set_startup_id = gdk_wayland_surface_set_startup_id;
@@ -3869,8 +3839,6 @@ _gdk_surface_impl_wayland_class_init (GdkSurfaceImplWaylandClass *klass)
  impl_class->unfullscreen = gdk_wayland_surface_unfullscreen;
  impl_class->set_keep_above = gdk_wayland_surface_set_keep_above;
  impl_class->set_keep_below = gdk_wayland_surface_set_keep_below;
-  impl_class->get_group = gdk_wayland_surface_get_group;
-  impl_class->set_group = gdk_wayland_surface_set_group;
  impl_class->set_decorations = gdk_wayland_surface_set_decorations;
  impl_class->get_decorations = gdk_wayland_surface_get_decorations;
  impl_class->set_functions = gdk_wayland_surface_set_functions;
@@ -58,6 +58,7 @@ proto_sources = [
  ['tablet', 'unstable', 'v2', ],
  ['keyboard-shortcuts-inhibit', 'unstable', 'v1', ],
  ['server-decoration', 'private' ],
+  ['xdg-output', 'unstable', 'v1', ],
 ]

 gdk_wayland_gen_headers = []
@@ -31,7 +31,7 @@

 G_DEFINE_TYPE (GdkWin32CairoContext, gdk_win32_cairo_context, GDK_TYPE_CAIRO_CONTEXT)

-static void
+void
 gdk_win32_surface_get_queued_window_rect (GdkSurface *surface,
                                          gint        scale,
                                          RECT       *return_window_rect)
@@ -53,7 +53,7 @@ gdk_win32_surface_get_queued_window_rect (GdkSurface *surface,
  *return_window_rect = window_rect;
 }

-static void
+void
 gdk_win32_surface_apply_queued_move_resize (GdkSurface *surface,
                                            RECT        window_rect)
 {
@@ -2830,8 +2830,8 @@ gdk_event_translate (MSG  *msg,
 	{
 	  generate_grab_broken_event (_gdk_device_manager, keyboard_grab->surface, TRUE, NULL);
 	}
+      G_GNUC_FALLTHROUGH;

-      /* fallthrough */
    case WM_SETFOCUS:
      if (keyboard_grab != NULL &&
 	  !keyboard_grab->owner_events)
@@ -166,6 +166,27 @@ gdk_win32_gl_context_begin_frame (GdkDrawContext *draw_context,
 {
  GdkGLContext *context = GDK_GL_CONTEXT (draw_context);
  GdkSurface *surface;
+  GdkSurfaceImplWin32 *impl;
+  RECT queued_window_rect;
+
+  surface = gdk_gl_context_get_surface (context);
+  impl = GDK_SURFACE_IMPL_WIN32 (surface->impl);
+
+  gdk_win32_surface_get_queued_window_rect (surface,
+                                            gdk_surface_get_scale_factor (surface),
+                                            &queued_window_rect);
+
+  /* Apply queued resizes GL windows before painting them
+   *  (we paint on the window DC directly, it must have the right size).
+   * Due to some poorly-understood issue delayed
+   * resizing of double-buffered windows can produce weird
+   * artefacts, so these are also resized before we paint.
+   */
+  if (impl->drag_move_resize_context.native_move_resize_pending)
+    {
+      impl->drag_move_resize_context.native_move_resize_pending = FALSE;
+      gdk_win32_surface_apply_queued_move_resize (surface, queued_window_rect);
+    }

  GDK_DRAW_CONTEXT_CLASS (gdk_win32_gl_context_parent_class)->begin_frame (draw_context, update_area);
  if (gdk_gl_context_get_shared_context (context))
@@ -176,7 +197,6 @@ gdk_win32_gl_context_begin_frame (GdkDrawContext *draw_context,

  /* If nothing else is known, repaint everything so that the back
     buffer is fully up-to-date for the swapbuffer */
-  surface = gdk_gl_context_get_surface (context);
  cairo_region_union_rectangle (update_area, &(GdkRectangle) {
                                                 0, 0,
                                                 gdk_surface_get_width (surface),
@@ -731,9 +731,6 @@ _gdk_win32_display_create_surface_impl (GdkDisplay    *display,
      return;
    }

-//  if (!from_set_skip_taskbar_hint && window->surface_type == GDK_SURFACE_TEMP)
-//    gdk_surface_set_skip_taskbar_hint (window, TRUE);
-
  _gdk_win32_surface_enable_transparency (window);

  frame_clock = gdk_surface_get_frame_clock (window);
@@ -1407,9 +1404,9 @@ gdk_win32_surface_lower (GdkSurface *window)
    }
 }

-static void
+void
 gdk_win32_surface_set_urgency_hint (GdkSurface *window,
-			     gboolean   urgent)
+                                    gboolean    urgent)
 {
  FLASHWINFO flashwinfo;
  typedef BOOL (WINAPI *PFN_FlashWindowEx) (FLASHWINFO*);
@@ -1503,8 +1500,6 @@ get_effective_window_decorations (GdkSurface       *window,

 	case GDK_SURFACE_TYPE_HINT_TOOLBAR:
 	case GDK_SURFACE_TYPE_HINT_UTILITY:
-	  gdk_surface_set_skip_taskbar_hint (window, TRUE);
-	  gdk_surface_set_skip_pager_hint (window, TRUE);
 	  *decoration = (GDK_DECOR_ALL | GDK_DECOR_MINIMIZE | GDK_DECOR_MAXIMIZE);
 	  return TRUE;

@@ -2071,32 +2066,6 @@ gdk_win32_surface_set_icon_name (GdkSurface   *window,
 #endif
 }

-static GdkSurface *
-gdk_win32_surface_get_group (GdkSurface *window)
-{
-  g_return_val_if_fail (GDK_IS_SURFACE (window), NULL);
-
-  if (GDK_SURFACE_DESTROYED (window))
-    return NULL;
-
-  g_warning ("gdk_surface_get_group not yet implemented");
-
-  return NULL;
-}
-
-static void
-gdk_win32_surface_set_group (GdkSurface *window,
-		      GdkSurface *leader)
-{
-  g_return_if_fail (GDK_IS_SURFACE (window));
-  g_return_if_fail (leader == NULL || GDK_IS_SURFACE (leader));
-
-  if (GDK_SURFACE_DESTROYED (window) || GDK_SURFACE_DESTROYED (leader))
-    return;
-
-  g_warning ("gdk_surface_set_group not implemented");
-}
-
 static void
 update_single_bit (LONG    *style,
                   gboolean all,
@@ -3865,8 +3834,8 @@ setup_drag_move_resize_context (GdkSurface                   *window,
                                GdkSurfaceEdge                edge,
                                GdkDevice                   *device,
                                gint                         button,
-                                gint                         root_x,
-                                gint                         root_y,
+                                gint                         x,
+                                gint                         y,
                                guint32                      timestamp)
 {
  RECT rect;
@@ -3874,6 +3843,9 @@ setup_drag_move_resize_context (GdkSurface                   *window,
  GdkSurface *pointer_window;
  GdkSurfaceImplWin32 *impl = GDK_SURFACE_IMPL_WIN32 (window->impl);
  gboolean maximized = gdk_surface_get_state (window) & GDK_SURFACE_STATE_MAXIMIZED;
+  gint root_x, root_y;
+
+  gdk_win32_surface_get_root_coords (window, x, y, &root_x, &root_y);

  /* Before we drag, we need to undo any maximization or snapping.
   * AeroSnap behaviour:
@@ -4507,8 +4479,8 @@ gdk_win32_surface_begin_resize_drag (GdkSurface     *window,
                                    GdkSurfaceEdge  edge,
                                    GdkDevice     *device,
                                    gint           button,
-                                    gint           root_x,
-                                    gint           root_y,
+                                    gint           x,
+                                    gint           y,
                                    guint32        timestamp)
 {
  GdkSurfaceImplWin32 *impl;
@@ -4536,15 +4508,15 @@ gdk_win32_surface_begin_resize_drag (GdkSurface     *window,

  setup_drag_move_resize_context (window, &impl->drag_move_resize_context,
                                  GDK_WIN32_DRAGOP_RESIZE, edge, device,
-                                  button, root_x, root_y, timestamp);
+                                  button, x, y, timestamp);
 }

 static void
 gdk_win32_surface_begin_move_drag (GdkSurface *window,
                                  GdkDevice *device,
                                  gint       button,
-                                  gint       root_x,
-                                  gint       root_y,
+                                  gint       x,
+                                  gint       y,
                                  guint32    timestamp)
 {
  GdkSurfaceImplWin32 *impl;
@@ -4571,7 +4543,7 @@ gdk_win32_surface_begin_move_drag (GdkSurface *window,

  setup_drag_move_resize_context (window, &impl->drag_move_resize_context,
                                  GDK_WIN32_DRAGOP_MOVE, GDK_SURFACE_EDGE_NORTH_WEST,
-                                  device, button, root_x, root_y, timestamp);
+                                  device, button, x, y, timestamp);
 }


@@ -4890,63 +4862,6 @@ gdk_win32_surface_set_modal_hint (GdkSurface *window,
 #endif
 }

-static void
-gdk_win32_surface_set_skip_taskbar_hint (GdkSurface *window,
-				  gboolean   skips_taskbar)
-{
-  static GdkSurface *owner = NULL;
-  //GdkSurfaceAttr wa;
-
-  g_return_if_fail (GDK_IS_SURFACE (window));
-
-  GDK_NOTE (MISC, g_print ("gdk_surface_set_skip_taskbar_hint: %p: %s, doing nothing\n",
-			   GDK_SURFACE_HWND (window),
-			   skips_taskbar ? "YES" : "NO"));
-
-  // ### TODO: Need to figure out what to do here.
-  return;
-
-  if (skips_taskbar)
-    {
-#if 0
-      if (owner == NULL)
-		{
-		  wa.surface_type = GDK_SURFACE_TEMP;
-		  wa.wclass = GDK_INPUT_OUTPUT;
-		  wa.width = wa.height = 1;
-		  owner = gdk_surface_new_internal (NULL, &wa, 0, TRUE);
-		}
-#endif
-
-      SetWindowLongPtr (GDK_SURFACE_HWND (window), GWLP_HWNDPARENT, (LONG_PTR) GDK_SURFACE_HWND (owner));
-
-#if 0 /* Should we also turn off the minimize and maximize buttons? */
-      SetWindowLong (GDK_SURFACE_HWND (window), GWL_STYLE,
-		     GetWindowLong (GDK_SURFACE_HWND (window), GWL_STYLE) & ~(WS_MINIMIZEBOX|WS_MAXIMIZEBOX|WS_SYSMENU));
-
-      SetWindowPos (GDK_SURFACE_HWND (window), SWP_NOZORDER_SPECIFIED,
-		    0, 0, 0, 0,
-		    SWP_FRAMECHANGED | SWP_NOACTIVATE | SWP_NOMOVE |
-		    SWP_NOREPOSITION | SWP_NOSIZE | SWP_NOZORDER);
-#endif
-    }
-  else
-    {
-      SetWindowLongPtr (GDK_SURFACE_HWND (window), GWLP_HWNDPARENT, 0);
-    }
-}
-
-static void
-gdk_win32_surface_set_skip_pager_hint (GdkSurface *window,
-				gboolean   skips_pager)
-{
-  g_return_if_fail (GDK_IS_SURFACE (window));
-
-  GDK_NOTE (MISC, g_print ("gdk_surface_set_skip_pager_hint: %p: %s, doing nothing\n",
-			   GDK_SURFACE_HWND (window),
-			   skips_pager ? "YES" : "NO"));
-}
-
 static void
 gdk_win32_surface_set_type_hint (GdkSurface        *window,
 			  GdkSurfaceTypeHint hint)
@@ -5311,9 +5226,6 @@ gdk_surface_impl_win32_class_init (GdkSurfaceImplWin32Class *klass)
  impl_class->set_type_hint = gdk_win32_surface_set_type_hint;
  impl_class->get_type_hint = gdk_win32_surface_get_type_hint;
  impl_class->set_modal_hint = gdk_win32_surface_set_modal_hint;
-  impl_class->set_skip_taskbar_hint = gdk_win32_surface_set_skip_taskbar_hint;
-  impl_class->set_skip_pager_hint = gdk_win32_surface_set_skip_pager_hint;
-  impl_class->set_urgency_hint = gdk_win32_surface_set_urgency_hint;
  impl_class->set_geometry_hints = gdk_win32_surface_set_geometry_hints;
  impl_class->set_title = gdk_win32_surface_set_title;
  //impl_class->set_startup_id = gdk_x11_surface_set_startup_id;
@@ -5333,8 +5245,6 @@ gdk_surface_impl_win32_class_init (GdkSurfaceImplWin32Class *klass)
  impl_class->unfullscreen = gdk_win32_surface_unfullscreen;
  impl_class->set_keep_above = gdk_win32_surface_set_keep_above;
  impl_class->set_keep_below = gdk_win32_surface_set_keep_below;
-  impl_class->get_group = gdk_win32_surface_get_group;
-  impl_class->set_group = gdk_win32_surface_set_group;
  impl_class->set_decorations = gdk_win32_surface_set_decorations;
  impl_class->get_decorations = gdk_win32_surface_get_decorations;
  impl_class->set_functions = gdk_win32_surface_set_functions;
@@ -384,6 +384,15 @@ void  _gdk_win32_update_layered_window_from_cache (GdkSurface *window,
                                                   gboolean    do_paint);


+void
+gdk_win32_surface_get_queued_window_rect (GdkSurface *surface,
+                                          gint        scale,
+                                          RECT       *return_window_rect);
+
+void
+gdk_win32_surface_apply_queued_move_resize (GdkSurface *surface,
+                                            RECT        window_rect);
+
 G_END_DECLS

 #endif /* __GDK_SURFACE_WIN32_H__ */
@@ -50,6 +50,10 @@ typedef struct _GdkWin32SurfaceClass GdkWin32SurfaceClass;
 GDK_AVAILABLE_IN_ALL
 GType    gdk_win32_surface_get_type          (void);

+GDK_AVAILABLE_IN_ALL
+void gdk_win32_surface_set_urgency_hint    (GdkSurface *surface,
+                                            gboolean    urgent);
+
 G_END_DECLS

 #endif /* __GDK_X11_SURFACE_H__ */
@@ -31,8 +31,8 @@



-#define APPEARS_FOCUSED(toplevel)                           \
-  ((toplevel)->has_focus || (toplevel)->has_focus_window || (toplevel)->has_pointer_focus)
+#define HAS_FOCUS(toplevel)                           \
+  ((toplevel)->has_focus || (toplevel)->has_pointer_focus)

 static void    gdk_x11_device_manager_core_finalize    (GObject *object);
 static void    gdk_x11_device_manager_core_constructed (GObject *object);
@@ -752,7 +752,7 @@ _gdk_device_manager_core_handle_focus (GdkSurface *surface,
  if (toplevel->focus_window == original)
    return;

-  had_focus = APPEARS_FOCUSED (toplevel);
+  had_focus = HAS_FOCUS (toplevel);
  x11_screen = GDK_X11_SCREEN (GDK_SURFACE_SCREEN (surface));

  switch (detail)
@@ -775,8 +775,8 @@ _gdk_device_manager_core_handle_focus (GdkSurface *surface,
 #endif /* XINPUT_2 */
          mode != NotifyUngrab)
        toplevel->has_pointer_focus = (focus_in) ? FALSE : TRUE;
+      G_GNUC_FALLTHROUGH;

-      /* fall through */
    case NotifyNonlinear:
    case NotifyNonlinearVirtual:
      if (mode != NotifyGrab &&
@@ -814,7 +814,7 @@ _gdk_device_manager_core_handle_focus (GdkSurface *surface,
      break;
    }

-  if (APPEARS_FOCUSED (toplevel) != had_focus)
+  if (HAS_FOCUS (toplevel) != had_focus)
    {
      GdkEvent *event;

@@ -2110,8 +2110,8 @@ _gdk_x11_surface_drag_begin (GdkSurface         *surface,
  x11_drag->protocol = GDK_DRAG_PROTO_XDND;
  x11_drag->actions = actions;
  x11_drag->ipc_surface = ipc_surface;
-  if (gdk_surface_get_group (surface))
-    gdk_surface_set_group (x11_drag->ipc_surface, surface);
+  if (gdk_x11_surface_get_group (surface))
+    gdk_x11_surface_set_group (x11_drag->ipc_surface, surface);
  gdk_surface_show (x11_drag->ipc_surface);

  x11_drag->drag_surface = create_drag_surface (display);
@@ -36,8 +36,8 @@ static void     gdk_event_source_finalize (GSource     *source);

 static GQuark quark_needs_enter = 0;

-#define APPEARS_FOCUSED(toplevel)                           \
-  ((toplevel)->has_focus || (toplevel)->has_focus_window || (toplevel)->has_pointer_focus)
+#define HAS_FOCUS(toplevel)                           \
+  ((toplevel)->has_focus || (toplevel)->has_pointer_focus)

 struct _GdkEventSource
 {
@@ -108,10 +108,10 @@ handle_focus_change (GdkEventCrossing *event)
  if (!event->focus || toplevel->has_focus_window)
    return;

-  had_focus = APPEARS_FOCUSED (toplevel);
+  had_focus = HAS_FOCUS (toplevel);
  toplevel->has_pointer_focus = focus_in;

-  if (APPEARS_FOCUSED (toplevel) != had_focus)
+  if (HAS_FOCUS (toplevel) != had_focus)
    {
      GdkEvent *focus_event;

@@ -1867,9 +1867,17 @@ gdk_x11_surface_set_modal_hint (GdkSurface *surface,
 			     NULL);
 }

-static void
+/**
+ * gdk_x11_surface_set_skip_taskbar_hint:
+ * @surface: (type GdkX11Surface): a native #GdkSurface
+ * @skips_taskbar: %TRUE to skip taskbars
+ *
+ * Sets a hint on @surface that taskbars should not
+ * display it. See the EWMH for details.
+ */
+void
 gdk_x11_surface_set_skip_taskbar_hint (GdkSurface *surface,
-				      gboolean   skips_taskbar)
+                                       gboolean    skips_taskbar)
 {
  GdkToplevelX11 *toplevel;
  
@@ -1888,9 +1896,17 @@ gdk_x11_surface_set_skip_taskbar_hint (GdkSurface *surface,
 			     NULL);
 }

-static void
+/**
+ * gdk_x11_surface_set_skip_pager_hint:
+ * @surface: (type GdkX11Surface): a #GdkSurface
+ * @skips_pager: %TRUE to skip pagers
+ *
+ * Sets a hint on @surface that pagers should not
+ * display it. See the EWMH for details.
+ */
+void
 gdk_x11_surface_set_skip_pager_hint (GdkSurface *surface,
-				    gboolean   skips_pager)
+                                     gboolean    skips_pager)
 {
  GdkToplevelX11 *toplevel;
    
@@ -1909,9 +1925,17 @@ gdk_x11_surface_set_skip_pager_hint (GdkSurface *surface,
 			     NULL);
 }

-static void
+/**
+ * gdk_x11_surface_set_urgency_hint:
+ * @surface: (type GdkX11Surface): a native #GdkSurface
+ * @urgent: %TRUE to indicate urgenct attention needed
+ *
+ * Sets a hint on @surface that it needs user attention.
+ * See the ICCCM for details.
+ */
+void
 gdk_x11_surface_set_urgency_hint (GdkSurface *surface,
-			     gboolean   urgent)
+                                  gboolean    urgent)
 {
  GdkToplevelX11 *toplevel;
    
@@ -3363,7 +3387,7 @@ gdk_x11_surface_set_keep_below (GdkSurface *surface, gboolean setting)
 				 setting ? GDK_SURFACE_STATE_BELOW : 0);
 }

-static GdkSurface *
+GdkSurface *
 gdk_x11_surface_get_group (GdkSurface *surface)
 {
  GdkToplevelX11 *toplevel;
@@ -3377,9 +3401,17 @@ gdk_x11_surface_get_group (GdkSurface *surface)
  return toplevel->group_leader;
 }

-static void
+/**
+ * gdk_x11_surface_set_group:
+ * @surface: (type GdkX11Surface): a native #GdkSurface
+ * @leader: a #GdkSurface
+ *
+ * Sets the group leader of @surface to be @leader.
+ * See the ICCCM for details.
+ */
+void
 gdk_x11_surface_set_group (GdkSurface *surface,
-			  GdkSurface *leader)
+                           GdkSurface *leader)
 {
  GdkToplevelX11 *toplevel;
  
@@ -4658,9 +4690,6 @@ gdk_surface_impl_x11_class_init (GdkSurfaceImplX11Class *klass)
  impl_class->set_type_hint = gdk_x11_surface_set_type_hint;
  impl_class->get_type_hint = gdk_x11_surface_get_type_hint;
  impl_class->set_modal_hint = gdk_x11_surface_set_modal_hint;
-  impl_class->set_skip_taskbar_hint = gdk_x11_surface_set_skip_taskbar_hint;
-  impl_class->set_skip_pager_hint = gdk_x11_surface_set_skip_pager_hint;
-  impl_class->set_urgency_hint = gdk_x11_surface_set_urgency_hint;
  impl_class->set_geometry_hints = gdk_x11_surface_set_geometry_hints;
  impl_class->set_title = gdk_x11_surface_set_title;
  impl_class->set_startup_id = gdk_x11_surface_set_startup_id;
@@ -4682,8 +4711,6 @@ gdk_surface_impl_x11_class_init (GdkSurfaceImplX11Class *klass)
  impl_class->unfullscreen = gdk_x11_surface_unfullscreen;
  impl_class->set_keep_above = gdk_x11_surface_set_keep_above;
  impl_class->set_keep_below = gdk_x11_surface_set_keep_below;
-  impl_class->get_group = gdk_x11_surface_get_group;
-  impl_class->set_group = gdk_x11_surface_set_group;
  impl_class->set_decorations = gdk_x11_surface_set_decorations;
  impl_class->get_decorations = gdk_x11_surface_get_decorations;
  impl_class->set_functions = gdk_x11_surface_set_functions;
@@ -105,6 +105,23 @@ GDK_AVAILABLE_IN_ALL
 GdkSurface  *gdk_x11_surface_lookup_for_display      (GdkDisplay *display,
                                                      Window      window);

+GDK_AVAILABLE_IN_ALL
+void gdk_x11_surface_set_skip_taskbar_hint (GdkSurface *surface,
+                                            gboolean    skips_taskbar);
+GDK_AVAILABLE_IN_ALL
+void gdk_x11_surface_set_skip_pager_hint   (GdkSurface *surface,
+                                            gboolean    skips_pager);
+GDK_AVAILABLE_IN_ALL
+void gdk_x11_surface_set_urgency_hint      (GdkSurface *surface,
+                                            gboolean    urgent);
+
+GDK_AVAILABLE_IN_ALL
+void          gdk_x11_surface_set_group    (GdkSurface *surface,
+                                            GdkSurface *leader);
+GDK_AVAILABLE_IN_ALL
+GdkSurface *  gdk_x11_surface_get_group    (GdkSurface *surface);
+
+
 G_END_DECLS

 #endif /* __GDK_X11_SURFACE_H__ */
@@ -4,6 +4,7 @@

 #include "gskdebugprivate.h"
 #include "gskprofilerprivate.h"
+#include "gdk/gdkglcontextprivate.h"
 #include "gdk/gdktextureprivate.h"
 #include "gdk/gdkgltextureprivate.h"

@@ -206,6 +207,12 @@ gsk_gl_driver_begin_frame (GskGLDriver *self)
 #endif
 }

+gboolean
+gsk_gl_driver_in_frame (GskGLDriver *self)
+{
+  return self->in_frame;
+}
+
 void
 gsk_gl_driver_end_frame (GskGLDriver *self)
 {
@@ -292,6 +299,13 @@ gsk_gl_driver_collect_textures (GskGLDriver *self)
  return old_size - g_hash_table_size (self->textures);
 }

+
+GdkGLContext *
+gsk_gl_driver_get_gl_context (GskGLDriver *self)
+{
+  return self->gl_context;
+}
+
 int
 gsk_gl_driver_get_max_texture_size (GskGLDriver *self)
 {
@@ -531,6 +545,9 @@ gsk_gl_driver_get_texture_for_texture (GskGLDriver *self,
                                           surface,
                                           min_filter,
                                           mag_filter);
+  gdk_gl_context_label_object_printf (self->gl_context, GL_TEXTURE, t->texture_id,
+                                      "GdkTexture<%p> %d", texture, t->texture_id);
+
  cairo_surface_destroy (surface);

  return t->texture_id;
@@ -633,7 +650,11 @@ gsk_gl_driver_create_render_target (GskGLDriver *self,
  glFramebufferTexture2D (GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, t->texture_id, 0);

  if (add_depth_buffer || add_stencil_buffer)
-    glGenRenderbuffersEXT (1, &depth_stencil_buffer_id);
+    {
+      glGenRenderbuffersEXT (1, &depth_stencil_buffer_id);
+      gdk_gl_context_label_object_printf (self->gl_context, GL_RENDERBUFFER, depth_stencil_buffer_id,
+                                          "%s buffer for %d", add_depth_buffer ? "Depth" : "Stencil", texture_id);
+    }
  else
    depth_stencil_buffer_id = 0;

@@ -23,12 +23,13 @@ typedef struct {


 GskGLDriver *   gsk_gl_driver_new                       (GdkGLContext    *context);
+GdkGLContext   *gsk_gl_driver_get_gl_context            (GskGLDriver     *driver);

 int             gsk_gl_driver_get_max_texture_size      (GskGLDriver     *driver);

 void            gsk_gl_driver_begin_frame               (GskGLDriver     *driver);
 void            gsk_gl_driver_end_frame                 (GskGLDriver     *driver);
-
+gboolean        gsk_gl_driver_in_frame                  (GskGLDriver     *driver);
 int             gsk_gl_driver_get_texture_for_texture   (GskGLDriver     *driver,
                                                         GdkTexture      *texture,
                                                         int              min_filter,
@@ -5,6 +5,8 @@
 #include "gskdebugprivate.h"
 #include "gskprivate.h"

+#include "gdk/gdkglcontextprivate.h"
+
 #include <graphene.h>
 #include <cairo.h>
 #include <epoxy/gl.h>
@@ -260,10 +262,15 @@ upload_dirty_glyph (GskGLGlyphCache *self,

  g_assert (atlas->pending_glyph.key != NULL);

+  gdk_gl_context_push_debug_group_printf (gsk_gl_driver_get_gl_context (self->gl_driver),
+                                          "Uploading glyph %d", atlas->pending_glyph.key->glyph);
+
  render_glyph (atlas, &atlas->pending_glyph, &region);

  gsk_gl_image_upload_regions (atlas->image, self->gl_driver, 1, &region);

+  gdk_gl_context_pop_debug_group (gsk_gl_driver_get_gl_context (self->gl_driver));
+
  g_free (region.data);

  atlas->pending_glyph.key = NULL;
@@ -345,6 +352,9 @@ gsk_gl_glyph_cache_get_glyph_image (GskGLGlyphCache        *self,
    {
      atlas->image = g_new0 (GskGLImage, 1);
      gsk_gl_image_create (atlas->image, self->gl_driver, atlas->width, atlas->height);
+      gdk_gl_context_label_object_printf (gsk_gl_driver_get_gl_context (self->gl_driver),
+                                          GL_TEXTURE, atlas->image->texture_id,
+                                          "Glyph atlas %d", atlas->image->texture_id);
    }

  if (atlas->pending_glyph.key != NULL)
@@ -20,6 +20,7 @@
 #include "gskprivate.h"

 #include "gdk/gdkgltextureprivate.h"
+#include "gdk/gdkglcontextprivate.h"

 #include <epoxy/gl.h>
 #include <cairo-ft.h>
@@ -325,9 +326,11 @@ struct _GskGLRenderer
      Program unblurred_outset_shadow_program;
      Program border_program;
      Program cross_fade_program;
+      Program blend_program;
    };
  };

+  RenderOpBuilder op_builder;
  GArray *render_ops;

  GskGLGlyphCache glyph_cache;
@@ -477,12 +480,14 @@ render_fallback_node (GskGLRenderer       *self,
  texture_id = gsk_gl_driver_create_texture (self->gl_driver,
                                             surface_width,
                                             surface_height);
-
  gsk_gl_driver_bind_source_texture (self->gl_driver, texture_id);
  gsk_gl_driver_init_texture_with_surface (self->gl_driver,
                                           texture_id,
                                           surface,
                                           GL_NEAREST, GL_NEAREST);
+  gdk_gl_context_label_object_printf  (self->gl_context, GL_TEXTURE, texture_id,
+                                       "Fallback %s %d", node->node_class->type_name, texture_id);
+

  cairo_surface_destroy (surface);

@@ -1215,13 +1220,14 @@ render_color_matrix_node (GskGLRenderer       *self,
  const float min_y = builder->dy + node->bounds.origin.y;
  const float max_x = min_x + node->bounds.size.width;
  const float max_y = min_y + node->bounds.size.height;
+  GskRenderNode *child = gsk_color_matrix_node_get_child (node);
  int texture_id;
  gboolean is_offscreen;

  /* Pass min_x/max_x/min_y/max_y without builder->dx/dy! */
  add_offscreen_ops (self, builder,
                     &node->bounds,
-                     gsk_color_matrix_node_get_child (node),
+                     child,
                     &texture_id, &is_offscreen,
                     RESET_CLIP | RESET_OPACITY);

@@ -1428,7 +1434,11 @@ render_outset_shadow_node (GskGLRenderer       *self,
      texture_id = gsk_gl_driver_create_texture (self->gl_driver, texture_width, texture_height);
      gsk_gl_driver_bind_source_texture (self->gl_driver, texture_id);
      gsk_gl_driver_init_texture_empty (self->gl_driver, texture_id);
+      gdk_gl_context_label_object_printf (self->gl_context, GL_TEXTURE, texture_id,
+                                          "Outset Shadow Temp %d", texture_id);
      render_target = gsk_gl_driver_create_render_target (self->gl_driver, texture_id, FALSE, FALSE);
+      gdk_gl_context_label_object_printf  (self->gl_context, GL_FRAMEBUFFER, render_target,
+                                           "Outset Shadow FB Temp %d", render_target);


      graphene_matrix_init_ortho (&item_proj,
@@ -1461,7 +1471,11 @@ render_outset_shadow_node (GskGLRenderer       *self,
      blurred_texture_id = gsk_gl_driver_create_permanent_texture (self->gl_driver, texture_width, texture_height);
      gsk_gl_driver_bind_source_texture (self->gl_driver, blurred_texture_id);
      gsk_gl_driver_init_texture_empty (self->gl_driver, blurred_texture_id);
+      gdk_gl_context_label_object_printf (self->gl_context, GL_TEXTURE, blurred_texture_id,
+                                          "Outset Shadow Cache %d", blurred_texture_id);
      blurred_render_target = gsk_gl_driver_create_render_target (self->gl_driver, blurred_texture_id, TRUE, TRUE);
+      gdk_gl_context_label_object_printf  (self->gl_context, GL_FRAMEBUFFER, render_target,
+                                           "Outset Shadow Cache FB %d", render_target);

      ops_set_render_target (builder, blurred_render_target);
      ops_pop_clip (builder);
@@ -1887,6 +1901,54 @@ render_cross_fade_node (GskGLRenderer       *self,
  ops_draw (builder, vertex_data);
 }

+static inline void
+render_blend_node (GskGLRenderer   *self,
+                   GskRenderNode   *node,
+                   RenderOpBuilder *builder)
+{
+  GskRenderNode *top_child = gsk_blend_node_get_top_child (node);
+  GskRenderNode *bottom_child = gsk_blend_node_get_bottom_child (node);
+  const float min_x = builder->dx + node->bounds.origin.x;
+  const float min_y = builder->dy + node->bounds.origin.y;
+  const float max_x = min_x + node->bounds.size.width;
+  const float max_y = min_y + node->bounds.size.height;
+  int top_texture_id;
+  int bottom_texture_id;
+  gboolean is_offscreen1, is_offscreen2;
+  RenderOp op;
+  const GskQuadVertex vertex_data[GL_N_VERTICES] = {
+    { { min_x, min_y }, { 0, 1 }, },
+    { { min_x, max_y }, { 0, 0 }, },
+    { { max_x, min_y }, { 1, 1 }, },
+
+    { { max_x, max_y }, { 1, 0 }, },
+    { { min_x, max_y }, { 0, 0 }, },
+    { { max_x, min_y }, { 1, 1 }, },
+  };
+
+  /* TODO: We create 2 textures here as big as the blend node, but both the
+   * start and the end node might be a lot smaller than that. */
+  add_offscreen_ops (self, builder,
+                     &node->bounds,
+                     bottom_child,
+                     &bottom_texture_id, &is_offscreen1,
+                     FORCE_OFFSCREEN | RESET_CLIP);
+
+  add_offscreen_ops (self, builder,
+                     &node->bounds,
+                     top_child,
+                     &top_texture_id, &is_offscreen2,
+                     FORCE_OFFSCREEN | RESET_CLIP);
+
+  ops_set_program (builder, &self->blend_program);
+  ops_set_texture (builder, bottom_texture_id);
+  op.op = OP_CHANGE_BLEND;
+  op.blend.source2 = top_texture_id;
+  op.blend.mode = gsk_blend_node_get_blend_mode (node);
+  ops_add (builder, &op);
+  ops_draw (builder, vertex_data);
+}
+
 static inline void
 apply_viewport_op (const Program  *program,
                   const RenderOp *op)
@@ -2161,6 +2223,18 @@ apply_cross_fade_op (const Program  *program,
  glUniform1f (program->cross_fade.progress_location, op->cross_fade.progress);
 }

+static inline void
+apply_blend_op (const Program  *program,
+                const RenderOp *op)
+{
+  /* End texture id */
+  glUniform1i (program->blend.source2_location, 1);
+  glActiveTexture (GL_TEXTURE0 + 1);
+  glBindTexture (GL_TEXTURE_2D, op->blend.source2);
+  /* progress */
+  glUniform1i (program->blend.mode_location, op->blend.mode);
+}
+
 static void
 gsk_gl_renderer_dispose (GObject *gobject)
 {
@@ -2193,6 +2267,7 @@ gsk_gl_renderer_create_programs (GskGLRenderer  *self,
    { "unblurred outset shadow",   "unblurred_outset_shadow.fs.glsl" },
    { "border",          "border.fs.glsl" },
    { "cross fade",      "cross_fade.fs.glsl" },
+    { "blend",           "blend.fs.glsl" },
  };

  builder = gsk_shader_builder_new ();
@@ -2323,6 +2398,10 @@ gsk_gl_renderer_create_programs (GskGLRenderer  *self,
  INIT_PROGRAM_UNIFORM_LOCATION (cross_fade, progress);
  INIT_PROGRAM_UNIFORM_LOCATION (cross_fade, source2);

+  /* blend */
+  INIT_PROGRAM_UNIFORM_LOCATION (blend, source2);
+  INIT_PROGRAM_UNIFORM_LOCATION (blend, mode);
+
  g_object_unref (builder);
  return TRUE;
 }
@@ -2504,9 +2583,11 @@ gsk_gl_renderer_add_render_ops (GskGLRenderer   *self,
    break;

    case GSK_DEBUG_NODE:
+      ops_push_debug_group (builder, gsk_debug_node_get_message (node));
      gsk_gl_renderer_add_render_ops (self,
                                      gsk_debug_node_get_child (node),
                                      builder);
+      ops_pop_debug_group (builder);
    break;

    case GSK_COLOR_NODE:
@@ -2573,8 +2654,11 @@ gsk_gl_renderer_add_render_ops (GskGLRenderer   *self,
      render_cross_fade_node (self, node, builder);
    break;

-    case GSK_REPEATING_LINEAR_GRADIENT_NODE:
    case GSK_BLEND_NODE:
+      render_blend_node (self, node, builder);
+    break;
+
+    case GSK_REPEATING_LINEAR_GRADIENT_NODE:
    case GSK_REPEAT_NODE:
    case GSK_CAIRO_NODE:
    default:
@@ -2640,9 +2724,14 @@ add_offscreen_ops (GskGLRenderer         *self,
  }

  texture_id = gsk_gl_driver_create_texture (self->gl_driver, width, height);
+  gdk_gl_context_label_object_printf (self->gl_context, GL_TEXTURE, texture_id,
+                                      "Offscreen<%s> %d", child_node->node_class->type_name, texture_id);
+
  gsk_gl_driver_bind_source_texture (self->gl_driver, texture_id);
  gsk_gl_driver_init_texture_empty (self->gl_driver, texture_id);
  render_target = gsk_gl_driver_create_render_target (self->gl_driver, texture_id, TRUE, TRUE);
+  gdk_gl_context_label_object_printf  (self->gl_context, GL_FRAMEBUFFER, render_target,
+                                       "Offscreen<%s> FB %d", child_node->node_class->type_name, render_target);

  graphene_matrix_init_ortho (&item_proj,
                              bounds->origin.x * scale,
@@ -2766,7 +2855,9 @@ gsk_gl_renderer_render_ops (GskGLRenderer *self,
          op->op == OP_CHANGE_VAO)
        continue;

-      if (op->op != OP_CHANGE_PROGRAM &&
+      if (op->op != OP_PUSH_DEBUG_GROUP &&
+          op->op != OP_POP_DEBUG_GROUP &&
+          op->op != OP_CHANGE_PROGRAM &&
          op->op != OP_CHANGE_RENDER_TARGET &&
          op->op != OP_CLEAR &&
          program == NULL)
@@ -2833,6 +2924,11 @@ gsk_gl_renderer_render_ops (GskGLRenderer *self,
          apply_cross_fade_op (program, op);
          break;

+        case OP_CHANGE_BLEND:
+          g_assert (program == &self->blend_program);
+          apply_blend_op (program, op);
+          break;
+
        case OP_CHANGE_LINEAR_GRADIENT:
          apply_linear_gradient_op (program, op);
          break;
@@ -2871,6 +2967,14 @@ gsk_gl_renderer_render_ops (GskGLRenderer *self,
          dump_framebuffer (op->dump.filename, op->dump.width, op->dump.height);
          break;

+        case OP_PUSH_DEBUG_GROUP:
+          gdk_gl_context_push_debug_group (self->gl_context, op->debug_group.text);
+          break;
+
+        case OP_POP_DEBUG_GROUP:
+          gdk_gl_context_pop_debug_group (self->gl_context);
+          break;
+
        default:
          g_warn_if_reached ();
        }
@@ -2893,8 +2997,8 @@ gsk_gl_renderer_do_render (GskRenderer           *renderer,
                           int                    scale_factor)
 {
  GskGLRenderer *self = GSK_GL_RENDERER (renderer);
-  RenderOpBuilder render_op_builder;
  graphene_matrix_t modelview, projection;
+  gsize buffer_size;
 #ifdef G_ENABLE_DEBUG
  GskProfiler *profiler;
  gint64 gpu_time, cpu_time;
@@ -2910,6 +3014,8 @@ gsk_gl_renderer_do_render (GskRenderer           *renderer,
      return;
    }

+  g_assert (gsk_gl_driver_in_frame (self->gl_driver));
+
  /* Set up the modelview and projection matrices to fit our viewport */
  graphene_matrix_init_scale (&modelview, scale_factor, scale_factor, 1.0);
  graphene_matrix_init_ortho (&projection,
@@ -2921,17 +3027,12 @@ gsk_gl_renderer_do_render (GskRenderer           *renderer,
                              ORTHO_FAR_PLANE);
  graphene_matrix_scale (&projection, 1, -1, 1);

-  gsk_gl_driver_begin_frame (self->gl_driver);
  gsk_gl_glyph_cache_begin_frame (&self->glyph_cache);
  gsk_gl_shadow_cache_begin_frame (&self->shadow_cache, self->gl_driver);

-  memset (&render_op_builder, 0, sizeof (render_op_builder));
-  render_op_builder.renderer = self;
-  render_op_builder.current_projection = projection;
-  render_op_builder.current_viewport = *viewport;
-  render_op_builder.current_opacity = 1.0f;
-  render_op_builder.render_ops = self->render_ops;
-  ops_set_modelview (&render_op_builder, &modelview,
+  ops_set_projection (&self->op_builder, &projection);
+  ops_set_viewport (&self->op_builder, viewport);
+  ops_set_modelview (&self->op_builder, &modelview,
                     scale_factor == 1 ? GSK_TRANSFORM_CATEGORY_IDENTITY : GSK_TRANSFORM_CATEGORY_2D_AFFINE);

  /* Initial clip is self->render_region! */
@@ -2942,13 +3043,13 @@ gsk_gl_renderer_do_render (GskRenderer           *renderer,

      cairo_region_get_extents (self->render_region, &render_extents);

-      ops_transform_bounds_modelview (&render_op_builder,
+      ops_transform_bounds_modelview (&self->op_builder,
                                      &GRAPHENE_RECT_INIT (render_extents.x,
                                                           render_extents.y,
                                                           render_extents.width,
                                                           render_extents.height),
                                      &transformed_render_region);
-      ops_push_clip (&render_op_builder,
+      ops_push_clip (&self->op_builder,
                     &GSK_ROUNDED_RECT_INIT (transformed_render_region.origin.x,
                                             transformed_render_region.origin.y,
                                             transformed_render_region.size.width,
@@ -2956,7 +3057,7 @@ gsk_gl_renderer_do_render (GskRenderer           *renderer,
    }
  else
    {
-      ops_push_clip (&render_op_builder,
+      ops_push_clip (&self->op_builder,
                     &GSK_ROUNDED_RECT_INIT (viewport->origin.x,
                                             viewport->origin.y,
                                             viewport->size.width,
@@ -2964,15 +3065,18 @@ gsk_gl_renderer_do_render (GskRenderer           *renderer,
    }

  if (fbo_id != 0)
-    ops_set_render_target (&render_op_builder, fbo_id);
+    ops_set_render_target (&self->op_builder, fbo_id);

-  gsk_gl_renderer_add_render_ops (self, root, &render_op_builder);
+  gdk_gl_context_push_debug_group (self->gl_context, "Adding render ops");
+  gsk_gl_renderer_add_render_ops (self, root, &self->op_builder);
+  gdk_gl_context_pop_debug_group (self->gl_context);

  /* We correctly reset the state everywhere */
-  g_assert_cmpint (render_op_builder.current_render_target, ==, fbo_id);
-  ops_pop_modelview (&render_op_builder);
-  ops_pop_clip (&render_op_builder);
-  ops_finish (&render_op_builder);
+  g_assert_cmpint (self->op_builder.current_render_target, ==, fbo_id);
+  ops_pop_modelview (&self->op_builder);
+  ops_pop_clip (&self->op_builder);
+  buffer_size = self->op_builder.buffer_size;
+  ops_finish (&self->op_builder);

  /*g_message ("Ops: %u", self->render_ops->len);*/

@@ -2982,6 +3086,10 @@ gsk_gl_renderer_do_render (GskRenderer           *renderer,
  gsk_profiler_timer_begin (profiler, self->profile_timers.cpu_time);
 #endif

+  /* Actually do the rendering */
+  if (fbo_id != 0)
+    glBindFramebuffer (GL_FRAMEBUFFER, fbo_id);
+
  glViewport (0, 0, ceilf (viewport->size.width), ceilf (viewport->size.height));
  gsk_gl_renderer_setup_render_mode (self);
  gsk_gl_renderer_clear (self);
@@ -2994,9 +3102,9 @@ gsk_gl_renderer_do_render (GskRenderer           *renderer,
  glBlendFunc (GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
  glBlendEquation (GL_FUNC_ADD);

-  gsk_gl_renderer_render_ops (self, render_op_builder.buffer_size);
-
-  gsk_gl_driver_end_frame (self->gl_driver);
+  gdk_gl_context_push_debug_group (self->gl_context, "Rendering ops");
+  gsk_gl_renderer_render_ops (self, buffer_size);
+  gdk_gl_context_pop_debug_group (self->gl_context);

 #ifdef G_ENABLE_DEBUG
  gsk_profiler_counter_inc (profiler, self->profile_counters.frames);
@@ -3024,6 +3132,9 @@ gsk_gl_renderer_render_texture (GskRenderer           *renderer,

  g_return_val_if_fail (self->gl_context != NULL, NULL);

+  gdk_gl_context_push_debug_group_printf (self->gl_context,
+                                          "Render %s<%p> to texture", root->node_class->type_name, root);
+
  width = ceilf (viewport->size.width);
  height = ceilf (viewport->size.height);

@@ -3035,6 +3146,9 @@ gsk_gl_renderer_render_texture (GskRenderer           *renderer,
  glGenTextures (1, &texture_id);
  glBindTexture (GL_TEXTURE_2D, texture_id);

+  gdk_gl_context_label_object_printf  (self->gl_context, GL_TEXTURE, texture_id,
+                                       "Texture %s<%p> %d", root->node_class->type_name, root, texture_id);
+
  if (gdk_gl_context_get_use_es (self->gl_context))
    glTexImage2D (GL_TEXTURE_2D, 0, GL_RGBA8, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
  else
@@ -3042,12 +3156,11 @@ gsk_gl_renderer_render_texture (GskRenderer           *renderer,

  glGenFramebuffers (1, &fbo_id);
  glBindFramebuffer (GL_FRAMEBUFFER, fbo_id);
+  gdk_gl_context_label_object_printf  (self->gl_context, GL_FRAMEBUFFER, fbo_id,
+                                       "FB %s<%p> %d", root->node_class->type_name, root, fbo_id);
  glFramebufferTexture2D (GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture_id, 0);
  g_assert_cmphex (glCheckFramebufferStatus (GL_FRAMEBUFFER), ==, GL_FRAMEBUFFER_COMPLETE);

-  gsk_gl_renderer_clear (self);
-  gsk_gl_driver_end_frame (self->gl_driver);
-
  /* Render the actual scene */
  gsk_gl_renderer_do_render (renderer, root, viewport, fbo_id, 1);

@@ -3056,6 +3169,10 @@ gsk_gl_renderer_render_texture (GskRenderer           *renderer,
                                width, height,
                                NULL, NULL);

+  gsk_gl_driver_end_frame (self->gl_driver);
+
+  gdk_gl_context_pop_debug_group (self->gl_context);
+
  gsk_gl_renderer_clear_tree (self);
  return texture;
 }
@@ -3074,6 +3191,9 @@ gsk_gl_renderer_render (GskRenderer          *renderer,
  if (self->gl_context == NULL)
    return;

+  gdk_gl_context_push_debug_group_printf (self->gl_context,
+                                          "Render root node %p", root);
+
  surface = gsk_renderer_get_surface (renderer);
  whole_surface = (GdkRectangle) {
                      0, 0,
@@ -3110,13 +3230,17 @@ gsk_gl_renderer_render (GskRenderer          *renderer,
  viewport.size.width = gdk_surface_get_width (surface) * self->scale_factor;
  viewport.size.height = gdk_surface_get_height (surface) * self->scale_factor;

+  gsk_gl_driver_begin_frame (self->gl_driver);
  gsk_gl_renderer_do_render (renderer, root, &viewport, 0, self->scale_factor);
+  gsk_gl_driver_end_frame (self->gl_driver);

  gdk_gl_context_make_current (self->gl_context);
  gsk_gl_renderer_clear_tree (self);

  gdk_draw_context_end_frame (GDK_DRAW_CONTEXT (self->gl_context));

+  gdk_gl_context_pop_debug_group (self->gl_context);
+
  g_clear_pointer (&self->render_region, cairo_region_destroy);
 }

@@ -3141,6 +3265,10 @@ gsk_gl_renderer_init (GskGLRenderer *self)

  self->render_ops = g_array_new (FALSE, FALSE, sizeof (RenderOp));

+  ops_init (&self->op_builder);
+  self->op_builder.renderer = self;
+  self->op_builder.render_ops = self->render_ops;
+
 #ifdef G_ENABLE_DEBUG
  {
    GskProfiler *profiler = gsk_renderer_get_profiler (GSK_RENDERER (self));
@@ -12,9 +12,23 @@ ops_finish (RenderOpBuilder *builder)
 {
  if (builder->mv_stack)
    g_array_free (builder->mv_stack, TRUE);
+  builder->mv_stack = NULL;

  if (builder->clip_stack)
    g_array_free (builder->clip_stack, TRUE);
+  builder->clip_stack = NULL;
+
+  builder->buffer_size = 0;
+  builder->dx = 0;
+  builder->dy = 0;
+  builder->current_modelview = NULL;
+  builder->current_clip = NULL;
+  builder->current_render_target = 0;
+  builder->current_texture = 0;
+  builder->current_program = NULL;
+  builder->current_program_state = NULL;
+  graphene_matrix_init_identity (&builder->current_projection);
+  builder->current_viewport = GRAPHENE_RECT_INIT (0, 0, 0, 0);
 }

 static inline void
@@ -44,6 +58,28 @@ ops_dump_framebuffer (RenderOpBuilder *builder,
  g_array_append_val (builder->render_ops, op);
 }

+void
+ops_push_debug_group (RenderOpBuilder *builder,
+                      const char      *text)
+{
+  RenderOp op;
+
+  op.op = OP_PUSH_DEBUG_GROUP;
+  strncpy (op.debug_group.text, text, sizeof(op.debug_group.text) - 1);
+  op.debug_group.text[sizeof(op.debug_group.text) - 1] = 0; /* Ensure zero terminated */
+
+  g_array_append_val (builder->render_ops, op);
+}
+
+void
+ops_pop_debug_group (RenderOpBuilder *builder)
+{
+  RenderOp op;
+
+  op.op = OP_POP_DEBUG_GROUP;
+  g_array_append_val (builder->render_ops, op);
+}
+
 float
 ops_get_scale (const RenderOpBuilder *builder)
 {
@@ -149,6 +185,22 @@ ops_transform_bounds_modelview (const RenderOpBuilder *builder,
  dst->origin.y += builder->dy * head->metadata.scale_y;
 }

+void
+ops_init (RenderOpBuilder *builder)
+{
+  int i;
+
+  memset (builder, 0, sizeof (*builder));
+
+  builder->current_opacity = 1.0f;
+
+  for (i = 0; i < GL_N_PROGRAMS; i ++)
+    {
+      builder->program_state[i].opacity = 1.0f;
+    }
+
+}
+
 void
 ops_set_program (RenderOpBuilder *builder,
                 const Program   *program)
@@ -11,7 +11,7 @@
 #include "gskrendernodeprivate.h"

 #define GL_N_VERTICES 6
-#define GL_N_PROGRAMS 11
+#define GL_N_PROGRAMS 12



@@ -59,6 +59,9 @@ enum {
  OP_CLEAR                  =  21,
  OP_DRAW                   =  22,
  OP_DUMP_FRAMEBUFFER       =  23,
+  OP_PUSH_DEBUG_GROUP       =  24,
+  OP_POP_DEBUG_GROUP        =  25,
+  OP_CHANGE_BLEND           =  26,
 };

 typedef struct
@@ -134,6 +137,10 @@ typedef struct
      int source2_location;
      int progress_location;
    } cross_fade;
+    struct {
+      int source2_location;
+      int mode_location;
+    } blend;
  };

 } Program;
@@ -212,11 +219,18 @@ typedef struct
      float progress;
      int source2;
    } cross_fade;
+    struct {
+      int source2;
+      int mode;
+    } blend;
    struct {
      char *filename;
      int width;
      int height;
    } dump;
+    struct {
+      char text[180]; /* Size of linear_gradient, so 'should be enough' without growing RenderOp */
+    } debug_group;
  };
 } RenderOp;

@@ -277,6 +291,10 @@ void              ops_dump_framebuffer   (RenderOpBuilder         *builder,
                                          const char              *filename,
                                          int                      width,
                                          int                      height);
+void              ops_init               (RenderOpBuilder         *builder);
+void              ops_push_debug_group    (RenderOpBuilder         *builder,
+                                           const char              *text);
+void              ops_pop_debug_group     (RenderOpBuilder         *builder);

 void              ops_finish             (RenderOpBuilder         *builder);
 void              ops_push_modelview     (RenderOpBuilder         *builder,
@@ -514,6 +514,30 @@ gsk_border_node_finalize (GskRenderNode *node)
 {
 }

+static void
+gsk_border_node_mesh_add_patch (cairo_pattern_t *pattern,
+                                const GdkRGBA   *color,
+                                double           x0,
+                                double           y0,
+                                double           x1,
+                                double           y1,
+                                double           x2,
+                                double           y2,
+                                double           x3,
+                                double           y3)
+{
+  cairo_mesh_pattern_begin_patch (pattern);
+  cairo_mesh_pattern_move_to (pattern, x0, y0);
+  cairo_mesh_pattern_line_to (pattern, x1, y1);
+  cairo_mesh_pattern_line_to (pattern, x2, y2);
+  cairo_mesh_pattern_line_to (pattern, x3, y3);
+  cairo_mesh_pattern_set_corner_color_rgba (pattern, 0, color->red, color->green, color->blue, color->alpha);
+  cairo_mesh_pattern_set_corner_color_rgba (pattern, 1, color->red, color->green, color->blue, color->alpha);
+  cairo_mesh_pattern_set_corner_color_rgba (pattern, 2, color->red, color->green, color->blue, color->alpha);
+  cairo_mesh_pattern_set_corner_color_rgba (pattern, 3, color->red, color->green, color->blue, color->alpha);
+  cairo_mesh_pattern_end_patch (pattern);
+}
+
 static void
 gsk_border_node_draw (GskRenderNode *node,
                       cairo_t       *cr)
@@ -537,59 +561,92 @@ gsk_border_node_draw (GskRenderNode *node,
      gdk_rgba_equal (&self->border_color[0], &self->border_color[3]))
    {
      gdk_cairo_set_source_rgba (cr, &self->border_color[0]);
-      cairo_fill (cr);
    }
  else
    {
      const graphene_rect_t *bounds = &self->outline.bounds;
+      /* distance to center "line":
+       * +-------------------------+
+       * |                         |
+       * |                         |
+       * |     ---this-line---     |
+       * |                         |
+       * |                         |
+       * +-------------------------+
+       * That line is equidistant from all sides. It's either horiontal
+       * or vertical, depending on if the rect is wider or taller.
+       * We use the 4 sides spanned up by connecting the line to the corner
+       * points to color the regions of the rectangle differently.
+       * Note that the call to cairo_fill() will add the potential final
+       * segment by closing the path, so we don't have to care.
+       */
+      cairo_pattern_t *mesh;
+      cairo_matrix_t mat;
+      graphene_point_t tl, br;
+      float scale;

-      cairo_clip (cr);
+      mesh = cairo_pattern_create_mesh ();
+      cairo_matrix_init_translate (&mat, -bounds->origin.x, -bounds->origin.y);
+      cairo_pattern_set_matrix (mesh, &mat);
+
+      scale = MIN (bounds->size.width / (self->border_width[1] + self->border_width[3]),
+                   bounds->size.height / (self->border_width[0] + self->border_width[2]));
+      graphene_point_init (&tl,
+                           self->border_width[3] * scale,
+                           self->border_width[0] * scale);
+      graphene_point_init (&br,
+                           bounds->size.width - self->border_width[1] * scale,
+                           bounds->size.height - self->border_width[2] * scale);

      /* Top */
      if (self->border_width[0] > 0)
        {
-          cairo_move_to (cr, bounds->origin.x, bounds->origin.y);
-          cairo_rel_line_to (cr, self->border_width[3], self->border_width[0]);
-          cairo_rel_line_to (cr, bounds->size.width - self->border_width[3] - self->border_width[1], 0);
-          cairo_rel_line_to (cr, self->border_width[1], - self->border_width[0]);
-          gdk_cairo_set_source_rgba (cr, &self->border_color[0]);
-          cairo_fill (cr);
+          gsk_border_node_mesh_add_patch (mesh,
+                                          &self->border_color[0],
+                                          0, 0,
+                                          tl.x, tl.y,
+                                          br.x, tl.y,
+                                          bounds->size.width, 0);
        }

      /* Right */
      if (self->border_width[1] > 0)
        {
-          cairo_move_to (cr, bounds->origin.x + bounds->size.width, bounds->origin.y);
-          cairo_rel_line_to (cr, - self->border_width[1], self->border_width[0]);
-          cairo_rel_line_to (cr, 0, bounds->size.height - self->border_width[0] - self->border_width[2]);
-          cairo_rel_line_to (cr, self->border_width[1], self->border_width[2]);
-          gdk_cairo_set_source_rgba (cr, &self->border_color[1]);
-          cairo_fill (cr);
+          gsk_border_node_mesh_add_patch (mesh,
+                                          &self->border_color[1],
+                                          bounds->size.width, 0,
+                                          br.x, tl.y,
+                                          br.x, br.y,
+                                          bounds->size.width, bounds->size.height);
        }

      /* Bottom */
      if (self->border_width[2] > 0)
        {
-          cairo_move_to (cr, bounds->origin.x, bounds->origin.y + bounds->size.height);
-          cairo_rel_line_to (cr, self->border_width[3], - self->border_width[2]);
-          cairo_rel_line_to (cr, bounds->size.width - self->border_width[3] - self->border_width[1], 0);
-          cairo_rel_line_to (cr, self->border_width[1], self->border_width[2]);
-          gdk_cairo_set_source_rgba (cr, &self->border_color[2]);
-          cairo_fill (cr);
+          gsk_border_node_mesh_add_patch (mesh,
+                                          &self->border_color[2],
+                                          0, bounds->size.height,
+                                          tl.x, br.y,
+                                          br.x, br.y,
+                                          bounds->size.width, bounds->size.height);
        }

      /* Left */
      if (self->border_width[3] > 0)
        {
-          cairo_move_to (cr, bounds->origin.x, bounds->origin.y);
-          cairo_rel_line_to (cr, self->border_width[3], self->border_width[0]);
-          cairo_rel_line_to (cr, 0, bounds->size.height - self->border_width[0] - self->border_width[2]);
-          cairo_rel_line_to (cr, - self->border_width[3], self->border_width[2]);
-          gdk_cairo_set_source_rgba (cr, &self->border_color[3]);
-          cairo_fill (cr);
+          gsk_border_node_mesh_add_patch (mesh,
+                                          &self->border_color[3],
+                                          0, 0,
+                                          tl.x, tl.y,
+                                          tl.x, br.y,
+                                          0, bounds->size.height);
        }
+
+      cairo_set_source (cr, mesh);
+      cairo_pattern_destroy (mesh);
    }

+  cairo_fill (cr);
  cairo_restore (cr);
 }

@@ -4318,10 +4375,10 @@ gsk_cross_fade_node_draw (GskRenderNode *node,
 {
  GskCrossFadeNode *self = (GskCrossFadeNode *) node;

-  cairo_push_group (cr);
+  cairo_push_group_with_content (cr, CAIRO_CONTENT_COLOR_ALPHA);
  gsk_render_node_draw (self->start, cr);

-  cairo_push_group (cr);
+  cairo_push_group_with_content (cr, CAIRO_CONTENT_COLOR_ALPHA);
  gsk_render_node_draw (self->end, cr);

  cairo_pop_group_to_source (cr);
@@ -197,9 +197,10 @@ gsk_rounded_rect_offset (GskRoundedRect *self,
 }

 static void
-border_radius_shrink (graphene_size_t *corner,
-                      double           width,
-                      double           height)
+border_radius_shrink (graphene_size_t       *corner,
+                      double                 width,
+                      double                 height,
+                      const graphene_size_t *max)
 {
  if (corner->width > 0)
    corner->width -= width;
@@ -211,6 +212,11 @@ border_radius_shrink (graphene_size_t *corner,
      corner->width = 0;
      corner->height = 0;
    }
+  else
+    {
+      corner->width = MIN (corner->width, max->width);
+      corner->height = MIN (corner->height, max->height);
+    }
 }

 /**
@@ -260,10 +266,10 @@ gsk_rounded_rect_shrink (GskRoundedRect *self,
      self->bounds.size.height -= top + bottom;
    }

-  border_radius_shrink (&self->corner[GSK_CORNER_TOP_LEFT], left, top);
-  border_radius_shrink (&self->corner[GSK_CORNER_TOP_RIGHT], right, top);
-  border_radius_shrink (&self->corner[GSK_CORNER_BOTTOM_RIGHT], right, bottom);
-  border_radius_shrink (&self->corner[GSK_CORNER_BOTTOM_LEFT], left, bottom);
+  border_radius_shrink (&self->corner[GSK_CORNER_TOP_LEFT], left, top, &self->bounds.size);
+  border_radius_shrink (&self->corner[GSK_CORNER_TOP_RIGHT], right, top, &self->bounds.size);
+  border_radius_shrink (&self->corner[GSK_CORNER_BOTTOM_RIGHT], right, bottom, &self->bounds.size);
+  border_radius_shrink (&self->corner[GSK_CORNER_BOTTOM_LEFT], left, bottom, &self->bounds.size);

  return self;
 }
@@ -19,7 +19,7 @@


 /**
- * SECTION:gsktransform
+ * SECTION:GskTransform
 * @Title: GskTransform
 * @Short_description: A description for transform operations
 *
@@ -42,8 +42,7 @@ typedef struct _GskTransformClass GskTransformClass;
 struct _GskTransform
 {
  const GskTransformClass *transform_class;
-  
-  volatile int ref_count;
+
  GskTransformCategory category;
  GskTransform *next;
 };
@@ -113,10 +112,9 @@ gsk_transform_alloc (const GskTransformClass *transform_class,

  g_return_val_if_fail (transform_class != NULL, NULL);

-  self = g_malloc0 (transform_class->struct_size);
+  self = g_atomic_rc_box_alloc0 (transform_class->struct_size);

  self->transform_class = transform_class;
-  self->ref_count = 1;
  self->category = next ? MIN (category, next->category) : category;
  self->next = gsk_transform_is_identity (next) ? NULL : next;

@@ -312,15 +310,15 @@ gsk_matrix_transform_apply_affine (GskTransform *transform,
      break;

    case GSK_TRANSFORM_CATEGORY_2D_AFFINE:
-      *out_dx += *out_scale_x * graphene_matrix_get_value (&self->matrix, 3, 0);
-      *out_dy += *out_scale_y * graphene_matrix_get_value (&self->matrix, 3, 1);
-      *out_scale_x *= graphene_matrix_get_value (&self->matrix, 0, 0);
-      *out_scale_y *= graphene_matrix_get_value (&self->matrix, 1, 1);
+      *out_dx += *out_scale_x * graphene_matrix_get_x_translation (&self->matrix);
+      *out_dy += *out_scale_y * graphene_matrix_get_y_translation (&self->matrix);
+      *out_scale_x *= graphene_matrix_get_x_scale (&self->matrix);
+      *out_scale_y *= graphene_matrix_get_y_scale (&self->matrix);
      break;

    case GSK_TRANSFORM_CATEGORY_2D_TRANSLATE:
-      *out_dx += *out_scale_x * graphene_matrix_get_value (&self->matrix, 3, 0);
-      *out_dy += *out_scale_y * graphene_matrix_get_value (&self->matrix, 3, 1);
+      *out_dx += *out_scale_x * graphene_matrix_get_x_translation (&self->matrix);
+      *out_dy += *out_scale_y * graphene_matrix_get_y_translation (&self->matrix);
      break;

    case GSK_TRANSFORM_CATEGORY_IDENTITY:
@@ -347,8 +345,8 @@ gsk_matrix_transform_apply_translate (GskTransform *transform,
      break;

    case GSK_TRANSFORM_CATEGORY_2D_TRANSLATE:
-      *out_dx += graphene_matrix_get_value (&self->matrix, 3, 0);
-      *out_dy += graphene_matrix_get_value (&self->matrix, 3, 1);
+      *out_dx += graphene_matrix_get_x_translation (&self->matrix);
+      *out_dy += graphene_matrix_get_y_translation (&self->matrix);
      break;

    case GSK_TRANSFORM_CATEGORY_IDENTITY:
@@ -421,8 +419,10 @@ gsk_matrix_transform_equal (GskTransform *first_transform,
  GskMatrixTransform *first = (GskMatrixTransform *) first_transform;
  GskMatrixTransform *second = (GskMatrixTransform *) second_transform;

-  /* Crude, but better than just returning FALSE */
-  return memcmp (&first->matrix, &second->matrix, sizeof (graphene_matrix_t)) == 0;
+  if (graphene_matrix_equal_fast (&first->matrix, &second->matrix))
+    return TRUE;
+
+  return graphene_matrix_equal (&first->matrix, &second->matrix);
 }

 static const GskTransformClass GSK_TRANSFORM_TRANSFORM_CLASS =
@@ -735,7 +735,7 @@ gsk_rotate_transform_equal (GskTransform *first_transform,
  GskRotateTransform *first = (GskRotateTransform *) first_transform;
  GskRotateTransform *second = (GskRotateTransform *) second_transform;

-  return first->angle == second->angle;
+  return G_APPROX_VALUE (first->angle, second->angle, 0.01f);
 }

 static void
@@ -837,8 +837,8 @@ gsk_rotate3d_transform_equal (GskTransform *first_transform,
  GskRotate3dTransform *first = (GskRotate3dTransform *) first_transform;
  GskRotate3dTransform *second = (GskRotate3dTransform *) second_transform;

-  return first->angle == second->angle
-         && graphene_vec3_equal (&first->axis, &second->axis);
+  return G_APPROX_VALUE (first->angle, second->angle, 0.01f) &&
+         graphene_vec3_equal (&first->axis, &second->axis);
 }

 static void
@@ -996,9 +996,9 @@ gsk_scale_transform_equal (GskTransform *first_transform,
  GskScaleTransform *first = (GskScaleTransform *) first_transform;
  GskScaleTransform *second = (GskScaleTransform *) second_transform;

-  return first->factor_x == second->factor_x
-         && first->factor_y == second->factor_y
-         && first->factor_z == second->factor_z;
+  return G_APPROX_VALUE (first->factor_x, second->factor_x, 0.01f) &&
+         G_APPROX_VALUE (first->factor_y, second->factor_y, 0.01f) &&
+         G_APPROX_VALUE (first->factor_z, second->factor_z, 0.01f);
 }

 static void
@@ -1150,7 +1150,7 @@ gsk_perspective_transform_equal (GskTransform *first_transform,
  GskPerspectiveTransform *first = (GskPerspectiveTransform *) first_transform;
  GskPerspectiveTransform *second = (GskPerspectiveTransform *) second_transform;

-  return first->depth == second->depth;
+  return G_APPROX_VALUE (first->depth, second->depth, 0.001f);
 }

 static void
@@ -1217,8 +1217,6 @@ gsk_transform_finalize (GskTransform *self)
  self->transform_class->finalize (self);

  gsk_transform_unref (self->next);
-
-  g_free (self);
 }

 /**
@@ -1235,9 +1233,7 @@ gsk_transform_ref (GskTransform *self)
  if (self == NULL)
    return NULL;

-  g_atomic_int_inc (&self->ref_count);
-
-  return self;
+  return g_atomic_rc_box_acquire (self);
 }

 /**
@@ -1255,8 +1251,7 @@ gsk_transform_unref (GskTransform *self)
  if (self == NULL)
    return;

-  if (g_atomic_int_dec_and_test (&self->ref_count))
-    gsk_transform_finalize (self);
+  g_atomic_rc_box_release_full (self, (GDestroyNotify) gsk_transform_finalize);
 }

 /**
@@ -1264,8 +1259,8 @@ gsk_transform_unref (GskTransform *self)
 * @self: (allow-none): a #GskTransform
 * @string:  The string to print into
 *
- * Converts @self into a string representation suitable for printing that
- * can later be parsed with gsk_transform_parse().
+ * Converts @self into a human-readable string representation suitable
+ * for printing that can later be parsed with gsk_transform_parse().
 **/
 void
 gsk_transform_print (GskTransform *self,
@@ -1651,3 +1646,258 @@ gsk_transform_transform_bounds (GskTransform          *self,
      break;
    }
 }
+
+static guint
+gsk_transform_parse_float (GtkCssParser *parser,
+                           guint         n,
+                           gpointer      data)
+{
+  float *f = data;
+  double d;
+
+  if (!gtk_css_parser_consume_number (parser, &d))
+    return 0;
+
+  f[n] = d;
+  return 1;
+}
+
+static guint
+gsk_transform_parse_scale (GtkCssParser *parser,
+                           guint         n,
+                           gpointer      data)
+{
+  float *f = data;
+  double d;
+
+  if (!gtk_css_parser_consume_number (parser, &d))
+    return 0;
+
+  f[n] = d;
+  f[1] = d;
+  return 1;
+}
+
+gboolean
+gsk_transform_parser_parse (GtkCssParser  *parser,
+                            GskTransform **out_transform)
+{
+  const GtkCssToken *token;
+  GskTransform *transform = NULL;
+  float f[16] = { 0, };
+
+  token = gtk_css_parser_get_token (parser);
+  if (gtk_css_token_is_ident (token, "none"))
+    {
+      gtk_css_parser_consume_token (parser);
+      *out_transform = NULL;
+      return TRUE;
+    }
+
+  while (TRUE)
+    {
+      if (gtk_css_token_is_function (token, "matrix"))
+        {
+          graphene_matrix_t matrix;
+          if (!gtk_css_parser_consume_function (parser, 6, 6, gsk_transform_parse_float, f))
+            goto fail;
+
+          graphene_matrix_init_from_2d (&matrix, f[0], f[1], f[2], f[3], f[4], f[5]);
+          transform = gsk_transform_matrix_with_category (transform,
+                                                          &matrix,
+                                                          GSK_TRANSFORM_CATEGORY_2D);
+        }
+      else if (gtk_css_token_is_function (token, "matrix3d"))
+        {
+          graphene_matrix_t matrix;
+          if (!gtk_css_parser_consume_function (parser, 16, 16, gsk_transform_parse_float, f))
+            goto fail;
+
+          graphene_matrix_init_from_float (&matrix, f);
+          transform = gsk_transform_matrix (transform, &matrix);
+        }
+      else if (gtk_css_token_is_function (token, "perspective"))
+        {
+          if (!gtk_css_parser_consume_function (parser, 1, 1, gsk_transform_parse_float, f))
+            goto fail;
+
+          transform = gsk_transform_perspective (transform, f[0]);
+        }
+      else if (gtk_css_token_is_function (token, "rotate") ||
+               gtk_css_token_is_function (token, "rotateZ"))
+        {
+          if (!gtk_css_parser_consume_function (parser, 1, 1, gsk_transform_parse_float, f))
+            goto fail;
+
+          transform = gsk_transform_rotate (transform, f[0]);
+        }
+      else if (gtk_css_token_is_function (token, "rotate3d"))
+        {
+          graphene_vec3_t axis;
+
+          if (!gtk_css_parser_consume_function (parser, 4, 4, gsk_transform_parse_float, f))
+            goto fail;
+
+          graphene_vec3_init (&axis, f[0], f[1], f[2]);
+          transform = gsk_transform_rotate_3d (transform, f[3], &axis);
+        }
+      else if (gtk_css_token_is_function (token, "rotateX"))
+        {
+          if (!gtk_css_parser_consume_function (parser, 1, 1, gsk_transform_parse_float, f))
+            goto fail;
+
+          transform = gsk_transform_rotate_3d (transform, f[0], graphene_vec3_x_axis ());
+        }
+      else if (gtk_css_token_is_function (token, "rotateY"))
+        {
+          if (!gtk_css_parser_consume_function (parser, 1, 1, gsk_transform_parse_float, f))
+            goto fail;
+
+          transform = gsk_transform_rotate_3d (transform, f[0], graphene_vec3_y_axis ());
+        }
+      else if (gtk_css_token_is_function (token, "scale"))
+        {
+          if (!gtk_css_parser_consume_function (parser, 1, 2, gsk_transform_parse_scale, f))
+            goto fail;
+
+          transform = gsk_transform_scale (transform, f[0], f[1]);
+        }
+      else if (gtk_css_token_is_function (token, "scale3d"))
+        {
+          if (!gtk_css_parser_consume_function (parser, 3, 3, gsk_transform_parse_float, f))
+            goto fail;
+
+          transform = gsk_transform_scale_3d (transform, f[0], f[1], f[2]);
+        }
+      else if (gtk_css_token_is_function (token, "scaleX"))
+        {
+          if (!gtk_css_parser_consume_function (parser, 1, 1, gsk_transform_parse_float, f))
+            goto fail;
+
+          transform = gsk_transform_scale (transform, f[0], 1.f);
+        }
+      else if (gtk_css_token_is_function (token, "scaleY"))
+        {
+          if (!gtk_css_parser_consume_function (parser, 1, 1, gsk_transform_parse_float, f))
+            goto fail;
+
+          transform = gsk_transform_scale (transform, 1.f, f[0]);
+        }
+      else if (gtk_css_token_is_function (token, "scaleZ"))
+        {
+          if (!gtk_css_parser_consume_function (parser, 1, 1, gsk_transform_parse_float, f))
+            goto fail;
+
+          transform = gsk_transform_scale_3d (transform, 1.f, 1.f, f[0]);
+        }
+      else if (gtk_css_token_is_function (token, "translate"))
+        {
+          f[1] = 0.f;
+          if (!gtk_css_parser_consume_function (parser, 1, 2, gsk_transform_parse_float, f))
+            goto fail;
+
+          transform = gsk_transform_translate (transform, &GRAPHENE_POINT_INIT (f[0], f[1]));
+        }
+      else if (gtk_css_token_is_function (token, "translate3d"))
+        {
+          if (!gtk_css_parser_consume_function (parser, 3, 3, gsk_transform_parse_float, f))
+            goto fail;
+
+          transform = gsk_transform_translate_3d (transform, &GRAPHENE_POINT3D_INIT (f[0], f[1], f[2]));
+        }
+      else if (gtk_css_token_is_function (token, "translateX"))
+        {
+          if (!gtk_css_parser_consume_function (parser, 1, 1, gsk_transform_parse_float, f))
+            goto fail;
+
+          transform = gsk_transform_translate (transform, &GRAPHENE_POINT_INIT (f[0], 0.f));
+        }
+      else if (gtk_css_token_is_function (token, "translateY"))
+        {
+          if (!gtk_css_parser_consume_function (parser, 1, 1, gsk_transform_parse_float, f))
+            goto fail;
+
+          transform = gsk_transform_translate (transform, &GRAPHENE_POINT_INIT (0.f, f[0]));
+        }
+      else if (gtk_css_token_is_function (token, "translateZ"))
+        {
+          if (!gtk_css_parser_consume_function (parser, 1, 1, gsk_transform_parse_float, f))
+            goto fail;
+
+          transform = gsk_transform_translate_3d (transform, &GRAPHENE_POINT3D_INIT (0.f, 0.f, f[0]));
+        }
+#if 0
+      /* FIXME: add these */
+      else if (gtk_css_token_is_function (token, "skew"))
+        {
+        }
+      else if (gtk_css_token_is_function (token, "skewX"))
+        {
+        }
+      else if (gtk_css_token_is_function (token, "skewY"))
+        {
+        }
+#endif
+      else
+        {
+          break;
+        }
+
+      token = gtk_css_parser_get_token (parser);
+    }
+
+  if (transform == NULL)
+    {
+      gtk_css_parser_error_syntax (parser, "Expected a transform");
+      goto fail;
+    }
+
+  *out_transform = transform;
+  return TRUE;
+
+fail:
+  gsk_transform_unref (transform);
+  *out_transform = NULL;
+  return FALSE;
+}
+
+/**
+ * gsk_transform_parse:
+ * @string: the string to parse
+ * @out_transform: (out): The location to put the transform in
+ *
+ * Parses the given @string into a transform and puts it in
+ * @out_transform. Strings printed via gsk_transform_to_string()
+ * can be read in again successfully using this function.
+ *
+ * If @string does not describe a valid transform, %FALSE is
+ * returned and %NULL is put in @out_transform.
+ *
+ * Returns: %TRUE if @string described a valid transform.
+ **/
+gboolean
+gsk_transform_parse (const char    *string,
+                     GskTransform **out_transform)
+{
+  GtkCssParser *parser;
+  GBytes *bytes;
+  gboolean result;
+
+  g_return_val_if_fail (string != NULL, FALSE);
+  g_return_val_if_fail (out_transform != NULL, FALSE);
+
+  bytes = g_bytes_new_static (string, strlen (string));
+  parser = gtk_css_parser_new_for_bytes (bytes, NULL, NULL, NULL, NULL, NULL);
+
+  result = gsk_transform_parser_parse (parser, out_transform);
+
+  if (result && !gtk_css_parser_has_token (parser, GTK_CSS_TOKEN_EOF))
+    {
+      g_clear_pointer (out_transform, gsk_transform_unref);
+      result = FALSE;
+    }
+  gtk_css_parser_unref (parser);
+  g_bytes_unref (bytes);
+
+  return result; 
+}
@@ -46,6 +46,9 @@ void                    gsk_transform_print                     (GskTransform
 GDK_AVAILABLE_IN_ALL
 char *                  gsk_transform_to_string                 (GskTransform                   *self);
 GDK_AVAILABLE_IN_ALL
+gboolean                gsk_transform_parse                     (const char                     *string,
+                                                                 GskTransform                  **out_transform);
+GDK_AVAILABLE_IN_ALL
 void                    gsk_transform_to_matrix                 (GskTransform                   *self,
                                                                 graphene_matrix_t              *out_matrix);
 GDK_AVAILABLE_IN_ALL
@@ -23,15 +23,21 @@

 #include "gsktransform.h"

-#include <gsk/gsk.h>
 #include "gsk/gskrendernodeprivate.h"

+#include <gtk/css/gtkcss.h>
+#include "gtk/css/gtkcssparserprivate.h"
+
 G_BEGIN_DECLS

 GskTransform *          gsk_transform_matrix_with_category      (GskTransform           *next,
                                                                 const graphene_matrix_t*matrix,
                                                                 GskTransformCategory    category);

+gboolean                gsk_transform_parser_parse              (GtkCssParser           *parser,
+                                                                 GskTransform          **out_transform);
+
+
 G_END_DECLS

 #endif /* __GSK_TRANSFORM_PRIVATE_H__ */
@@ -11,6 +11,7 @@ gsk_private_gl_shaders = [
  'resources/glsl/unblurred_outset_shadow.fs.glsl',
  'resources/glsl/border.fs.glsl',
  'resources/glsl/cross_fade.fs.glsl',
+  'resources/glsl/blend.fs.glsl',
  'resources/glsl/es2_common.fs.glsl',
  'resources/glsl/es2_common.vs.glsl',
  'resources/glsl/gl3_common.fs.glsl',
@@ -0,0 +1,287 @@
+uniform int u_mode;
+uniform sampler2D u_source2;
+
+float
+combine (float source, float backdrop)
+{
+  return source + backdrop * (1 - source);
+}
+
+vec4
+composite (vec4 Cs, vec4 Cb, vec3 B)
+{
+  float ao = Cs.a + Cb.a * (1 - Cs.a);
+  vec3 Co = (Cs.a*(1 - Cb.a)*Cs.rgb + Cs.a*Cb.a*B + (1 - Cs.a)*Cb.a*Cb.rgb) / ao;
+  return vec4(Co, ao);
+}
+
+vec4
+normal (vec4 Cs, vec4 Cb)
+{
+  return composite (Cs, Cb, Cs.rgb);
+}
+
+vec4
+multiply (vec4 Cs, vec4 Cb)
+{
+  return composite (Cs, Cb, Cs.rgb * Cb.rgb);
+}
+
+vec4
+difference (vec4 Cs, vec4 Cb)
+{
+  return composite (Cs, Cb, abs(Cs.rgb - Cb.rgb));
+}
+
+vec4
+screen (vec4 Cs, vec4 Cb)
+{
+  return composite (Cs, Cb, Cs.rgb + Cb.rgb - Cs.rgb * Cb.rgb);
+}
+
+float
+hard_light (float source, float backdrop)
+{
+  if (source <= 0.5)
+    return 2 * backdrop * source;
+  else
+    return 2 * (backdrop + source - backdrop * source) - 1;
+}
+
+vec4
+hard_light (vec4 Cs, vec4 Cb)
+{
+  vec3 B = vec3 (hard_light (Cs.r, Cb.r),
+                 hard_light (Cs.g, Cb.g),
+                 hard_light (Cs.b, Cb.b));
+  return composite (Cs, Cb, B);
+}
+
+float
+soft_light (float source, float backdrop)
+{
+  float db;
+
+  if (backdrop <= 0.25)
+    db = ((16 * backdrop - 12) * backdrop + 4) * backdrop;
+  else
+    db = sqrt (backdrop);
+
+  if (source <= 0.5)
+    return backdrop - (1 - 2 * source) * backdrop * (1 - backdrop);
+  else
+    return backdrop + (2 * source - 1) * (db - backdrop);
+}
+
+vec4
+soft_light (vec4 Cs, vec4 Cb)
+{
+  vec3 B = vec3 (soft_light (Cs.r, Cb.r),
+                 soft_light (Cs.g, Cb.g),
+                 soft_light (Cs.b, Cb.b));
+  return composite (Cs, Cb, B);
+}
+
+vec4
+overlay (vec4 Cs, vec4 Cb)
+{
+  vec3 B = vec3 (hard_light (Cb.r, Cs.r),
+                 hard_light (Cb.g, Cs.g),
+                 hard_light (Cb.b, Cs.b));
+  return composite (Cs, Cb, B);
+}
+
+vec4
+darken (vec4 Cs, vec4 Cb)
+{
+  vec3 B = min (Cs.rgb, Cb.rgb);
+  return composite (Cs, Cb, B);
+}
+
+vec4
+lighten (vec4 Cs, vec4 Cb)
+{
+  vec3 B = max (Cs.rgb, Cb.rgb);
+  return composite (Cs, Cb, B);
+}
+
+float
+color_dodge (float source, float backdrop)
+{
+  return (source == 1.0) ? source : min (backdrop / (1.0 - source), 1.0);
+}
+
+vec4
+color_dodge (vec4 Cs, vec4 Cb)
+{
+  vec3 B = vec3 (color_dodge (Cs.r, Cb.r),
+                 color_dodge (Cs.g, Cb.g),
+                 color_dodge (Cs.b, Cb.b));
+  return composite (Cs, Cb, B);
+}
+
+
+float
+color_burn (float source, float backdrop)
+{
+  return (source == 0.0) ? source : max ((1.0 - ((1.0 - backdrop) / source)), 0.0);
+}
+
+vec4
+color_burn (vec4 Cs, vec4 Cb)
+{
+  vec3 B = vec3 (color_burn (Cs.r, Cb.r),
+                 color_burn (Cs.g, Cb.g),
+                 color_burn (Cs.b, Cb.b));
+  return composite (Cs, Cb, B);
+}
+
+vec4
+exclusion (vec4 Cs, vec4 Cb)
+{
+  vec3 B = Cb.rgb + Cs.rgb - 2.0 * Cb.rgb * Cs.rgb;
+  return composite (Cs, Cb, B);
+}
+
+float
+lum (vec3 c)
+{
+  return 0.3 * c.r + 0.59 * c.g + 0.11 * c.b;
+}
+
+vec3
+clip_color (vec3 c)
+{
+  float l = lum (c);
+  float n = min (c.r, min (c.g, c.b));
+  float x = max (c.r, max (c.g, c.b));
+  if (n < 0) c = l + (((c - l) * l) / (l - n));
+  if (x > 1) c = l + (((c - l) * (1 - l)) / (x - l));
+  return c;
+}
+
+vec3
+set_lum (vec3 c, float l)
+{
+  float d = l - lum (c);
+  return clip_color (vec3 (c.r + d, c.g + d, c.b + d));
+}
+
+float
+sat (vec3 c)
+{
+  return max (c.r, max (c.g, c.b)) - min (c.r, min (c.g, c.b));
+}
+
+vec3
+set_sat (vec3 c, float s)
+{
+  float cmin = min (c.r, min (c.g, c.b));
+  float cmax = max (c.r, max (c.g, c.b));
+  vec3 res;
+
+  if (cmax == cmin)
+    res = vec3 (0, 0, 0);
+  else
+    {
+      if (c.r == cmax)
+        {
+          if (c.g == cmin)
+            {
+              res.b = ((c.b - cmin) * s) / (cmax - cmin);
+              res.g = 0;
+            }
+          else
+            {
+              res.g = ((c.g - cmin) * s) / (cmax - cmin);
+              res.b = 0;
+            }
+          res.r = s;
+        }
+      else if (c.g == cmax)
+        {
+          if (c.r == cmin)
+            {
+              res.b = ((c.b - cmin) * s) / (cmax - cmin);
+              res.r = 0;
+            }
+          else
+            {
+              res.r = ((c.r - cmin) * s) / (cmax - cmin);
+              res.b = 0;
+            }
+          res.g = s;
+        }
+      else
+        {
+          if (c.r == cmin)
+            {
+              res.g = ((c.g - cmin) * s) / (cmax - cmin);
+              res.r = 0;
+            }
+          else
+            {
+              res.r = ((c.r - cmin) * s) / (cmax - cmin);
+              res.g = 0;
+            }
+          res.b = s;
+        }
+    }
+  return res;
+}
+
+vec4
+color (vec4 Cs, vec4 Cb)
+{
+  vec3 B = set_lum (Cs.rgb, lum (Cb.rgb));
+  return composite (Cs, Cb, B);
+}
+
+vec4
+hue (vec4 Cs, vec4 Cb)
+{
+  vec3 B = set_lum (set_sat (Cs.rgb, sat (Cb.rgb)), lum (Cb.rgb));
+  return composite (Cs, Cb, B);
+}
+
+vec4
+saturation (vec4 Cs, vec4 Cb)
+{
+  vec3 B = set_lum (set_sat (Cb.rgb, sat (Cs.rgb)), lum (Cb.rgb));
+  return composite (Cs, Cb, B);
+}
+
+vec4
+luminosity (vec4 Cs, vec4 Cb)
+{
+  vec3 B = set_lum (Cb.rgb, lum (Cs.rgb));
+  return composite (Cs, Cb, B);
+}
+
+void main() {
+  vec4 bottom_color = Texture(u_source, vUv);
+  vec4 top_color = Texture(u_source2, vUv);
+
+  vec4 result;
+  switch(u_mode) {
+    case 0:  result = normal(bottom_color, top_color);      break;
+    case 1:  result = multiply(bottom_color, top_color);    break;
+    case 2:  result = screen(bottom_color, top_color);      break;
+    case 3:  result = overlay(bottom_color, top_color);     break;
+    case 4:  result = darken(bottom_color, top_color);      break;
+    case 5:  result = lighten(bottom_color, top_color);     break;
+    case 6:  result = color_dodge(bottom_color, top_color); break;
+    case 7:  result = color_burn(bottom_color, top_color);  break;
+    case 8:  result = hard_light(bottom_color, top_color);  break;
+    case 9:  result = soft_light(bottom_color, top_color);  break;
+    case 10: result = difference(bottom_color, top_color);  break;
+    case 11: result = exclusion(bottom_color, top_color);   break;
+    case 12: result = color(bottom_color, top_color);       break;
+    case 13: result = hue(bottom_color, top_color);         break;
+    case 14: result = saturation(bottom_color, top_color);  break;
+    case 15: result = luminosity(bottom_color, top_color);  break;
+    default: discard;
+  }
+
+  setOutputColor(result * u_alpha);
+}
@@ -6,7 +6,8 @@ void main() {
  vec4 source1 = Texture(u_source, vUv);  // start child
  vec4 source2 = Texture(u_source2, vUv); // end child

-  float p = u_progress;
-  vec4 color = ((1.0 - p) * source1) + (p * source2);
+  float p_start = (1.0 - u_progress) * u_alpha;
+  float p_end = u_progress * u_alpha;
+  vec4 color = (p_start * source1) + (p_end * source2);
  setOutputColor(color);
 }
@@ -72,6 +72,7 @@ gsk_vulkan_clip_intersect_rect (GskVulkanClip         *dest,
           */
          return FALSE;
        }
+      break;

    default:
      g_assert_not_reached ();
@@ -42,6 +42,13 @@ gtk_cell_accessible_parent_get_type (void)
  return g_define_type_id__volatile;
 }

+/**
+ * gtk_cell_accessible_parent_get_cell_extents:
+ * @x: (out):
+ * @y: (out):
+ * @width: (out):
+ * @height: (out):
+ */
 void
 gtk_cell_accessible_parent_get_cell_extents (GtkCellAccessibleParent *parent,
                                             GtkCellAccessible       *cell,
@@ -61,6 +68,10 @@ gtk_cell_accessible_parent_get_cell_extents (GtkCellAccessibleParent *parent,
    (iface->get_cell_extents) (parent, cell, x, y, width, height, coord_type);
 }

+/**
+ * gtk_cell_accessible_parent_get_cell_area:
+ * @cell_rect: (out):
+ */
 void
 gtk_cell_accessible_parent_get_cell_area (GtkCellAccessibleParent *parent,
                                          GtkCellAccessible       *cell,
@@ -188,6 +199,11 @@ gtk_cell_accessible_parent_update_relationset (GtkCellAccessibleParent *parent,
    (iface->update_relationset) (parent, cell, relationset);
 }

+/**
+ * gtk_cell_accessible_parent_get_cell_position:
+ * @row: (out):
+ * @column: (out):
+ */
 void
 gtk_cell_accessible_parent_get_cell_position (GtkCellAccessibleParent *parent,
                                              GtkCellAccessible       *cell,
@@ -614,7 +614,6 @@ static gboolean
 gtk_icon_view_item_accessible_grab_focus (AtkComponent *component)
 {
  GtkIconViewItemAccessible *item;
-  GtkWidget *toplevel;

  g_return_val_if_fail (GTK_IS_ICON_VIEW_ITEM_ACCESSIBLE (component), FALSE);

@@ -624,13 +623,6 @@ gtk_icon_view_item_accessible_grab_focus (AtkComponent *component)

  gtk_widget_grab_focus (item->widget);
  _gtk_icon_view_set_cursor_item (GTK_ICON_VIEW (item->widget), item->item, NULL);
-  toplevel = gtk_widget_get_toplevel (GTK_WIDGET (item->widget));
-  if (gtk_widget_is_toplevel (toplevel))
-    {
-      G_GNUC_BEGIN_IGNORE_DEPRECATIONS
-      gtk_window_present (GTK_WINDOW (toplevel));
-      G_GNUC_END_IGNORE_DEPRECATIONS
-    }

  return TRUE;
 }
@@ -557,7 +557,7 @@ gtk_widget_accessible_get_extents (AtkComponent   *component,
    {
      *x = allocation.x;
      *y = allocation.y;
-      surface = gtk_widget_get_parent_surface (widget);
+      surface = gtk_widget_get_surface (gtk_widget_get_parent (widget));
    }
  else
    {
@@ -0,0 +1,41 @@
+/* GTK - The GIMP Toolkit
+ * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
+ *
+ * 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 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/>.
+ */
+
+/*
+ * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
+ * file for a list of people on the GTK+ Team.  See the ChangeLog
+ * files for a list of changes.  These files are distributed with
+ * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
+ */
+
+#ifndef __GTK_CSS_H__
+#define __GTK_CSS_H__
+
+#define __GTK_CSS_H_INSIDE__
+
+#include <glib.h>
+#include <gdk/gdkversionmacros.h>
+
+#include <gtk/css/gtkcssenums.h>
+#include <gtk/css/gtkcssenumtypes.h>
+#include <gtk/css/gtkcsserror.h>
+#include <gtk/css/gtkcsslocation.h>
+#include <gtk/css/gtkcsssection.h>
+
+#undef __GTK_CSS_H_INSIDE__
+
+#endif /* __GTK_CSS_H__ */
@@ -0,0 +1,77 @@
+/* GTK - The GIMP Toolkit
+ * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
+ *
+ * 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 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/>.
+ */
+
+/*
+ * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
+ * file for a list of people on the GTK+ Team.  See the ChangeLog
+ * files for a list of changes.  These files are distributed with
+ * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
+ */
+
+#ifndef __GTK_CSS_ENUMS_H__
+#define __GTK_CSS_ENUMS_H__
+
+#if !defined (__GTK_CSS_H_INSIDE__) && !defined (GTK_CSS_COMPILATION)
+#error "Only <gtk/css/gtkcss.h> can be included directly."
+#endif
+
+#include <glib.h>
+#include <gdk/gdkversionmacros.h>
+
+/**
+ * GtkCssParserError:
+ * @GTK_CSS_PARSER_ERROR_FAILED: Unknown failure.
+ * @GTK_CSS_PARSER_ERROR_SYNTAX: The given text does not form valid
+ *     syntax
+ * @GTK_CSS_PARSER_ERROR_IMPORT: Failed to import a resource
+ * @GTK_CSS_PARSER_ERROR_NAME: The given name has not been defined
+ * @GTK_CSS_PARSER_ERROR_UNKNOWN_VALUE: The given value is not
+ *     correct
+ *
+ * Errors that can occur while parsing CSS.
+ * 
+ * These errors are unexpected and will cause parts of the given CSS
+ * to be ignored.
+ */
+typedef enum
+{
+  GTK_CSS_PARSER_ERROR_FAILED,
+  GTK_CSS_PARSER_ERROR_SYNTAX,
+  GTK_CSS_PARSER_ERROR_IMPORT,
+  GTK_CSS_PARSER_ERROR_NAME,
+  GTK_CSS_PARSER_ERROR_UNKNOWN_VALUE
+} GtkCssParserError;
+
+/**
+ * GtkCssParserWarning:
+ * @GTK_CSS_PARSER_WARNING_DEPRECATED: The given construct is
+ *     deprecated and will be removed in a future version
+ * @GTK_CSS_PARSER_WARNING_SYNTAX: A syntax construct was used
+ *     that should be avoided
+ *
+ * Warnings that can occur while parsing CSS.
+ *
+ * Unlike #GtkCssParserErrors, warnings do not cause the parser to
+ * skip any input, but they indicate issues that should be fixed.
+ */
+typedef enum
+{
+  GTK_CSS_PARSER_WARNING_DEPRECATED,
+  GTK_CSS_PARSER_WARNING_SYNTAX
+} GtkCssParserWarning;
+
+#endif /* __GTK_CSS_ENUMS_H__ */
@@ -0,0 +1,38 @@
+/*** BEGIN file-header ***/
+#include "config.h"
+#include "gtkcssenumtypes.h"
+#include <gtkcss.h>
+
+/*** END file-header ***/
+
+/*** BEGIN file-production ***/
+/* enumerations from "@basename@" */
+/*** END file-production ***/
+
+/*** BEGIN value-header ***/
+GType
+@enum_name@_get_type (void)
+{
+  static volatile gsize g_define_type_id__volatile = 0;
+
+  if (g_once_init_enter (&g_define_type_id__volatile))
+    {
+      static const G@Type@Value values[] = {
+/*** END value-header ***/
+
+/*** BEGIN value-production ***/
+        { @VALUENAME@, "@VALUENAME@", "@valuenick@" },
+/*** END value-production ***/
+
+/*** BEGIN value-tail ***/
+        { 0, NULL, NULL }
+      };
+      GType g_define_type_id =
+        g_@type@_register_static (g_intern_static_string ("@EnumName@"), values);
+      g_once_init_leave (&g_define_type_id__volatile, g_define_type_id);
+    }
+
+  return g_define_type_id__volatile;
+}
+
+/*** END value-tail ***/
@@ -0,0 +1,29 @@
+/*** BEGIN file-header ***/
+#ifndef __GTK_CSS_ENUM_TYPES_H__
+#define __GTK_CSS_ENUM_TYPES_H__
+
+#if !defined (__GTK_CSS_H_INSIDE__) && !defined (GTK_CSS_COMPILATION)
+#error "Only <gtk/css/gtkcss.h> can be included directly."
+#endif
+
+#include <glib-object.h>
+#include <gdk/gdkversionmacros.h>
+
+G_BEGIN_DECLS
+/*** END file-header ***/
+
+/*** BEGIN file-production ***/
+
+/* enumerations from "@basename@" */
+/*** END file-production ***/
+
+/*** BEGIN value-header ***/
+GDK_AVAILABLE_IN_ALL GType @enum_name@_get_type (void) G_GNUC_CONST;
+#define @ENUMPREFIX@_TYPE_@ENUMSHORT@ (@enum_name@_get_type ())
+/*** END value-header ***/
+
+/*** BEGIN file-tail ***/
+G_END_DECLS
+
+#endif /* __GTK_CSS_ENUM_TYPES_H__ */
+/*** END file-tail ***/
@@ -0,0 +1,35 @@
+/*
+ * Copyright © 2019 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 "gtkcsserror.h"
+
+GQuark
+gtk_css_parser_error_quark (void)
+{
+  return g_quark_from_static_string ("gtk-css-parser-error-quark");
+}
+
+GQuark
+gtk_css_parser_warning_quark (void)
+{
+  return g_quark_from_static_string ("gtk-css-parser-warning-quark");
+}
+
@@ -0,0 +1,51 @@
+/*
+ * Copyright © 2019 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 __GTK_CSS_ERROR_H__
+#define __GTK_CSS_ERROR_H__
+
+#include <glib.h>
+#include <gdk/gdkversionmacros.h>
+
+G_BEGIN_DECLS
+
+/**
+ * GTK_CSS_PARSER_ERROR:
+ *
+ * Domain for #GtkCssParser errors.
+ */
+#define GTK_CSS_PARSER_ERROR (gtk_css_parser_error_quark ())
+
+GDK_AVAILABLE_IN_ALL
+GQuark gtk_css_parser_error_quark (void);
+
+/**
+ * GTK_CSS_PARSER_WARNING:
+ *
+ * Domain for #GtkCssParser warnings.
+ */
+#define GTK_CSS_PARSER_WARNING (gtk_css_parser_warning_quark ())
+
+GDK_AVAILABLE_IN_ALL
+GQuark gtk_css_parser_warning_quark (void);
+
+G_END_DECLS
+
+#endif /* __GTK_CSS_ERROR_H__ */
--- a/Show More
+++ b/Show More