colorchoicebutton: Revise API

This is a new color button implementation
built around GtkColorChoice.

demos/gtk-demo/font_features.c

@@ -21,7 +21,75 @@
 #include "script-names.h"
 #include "language-names.h"
 
-G_GNUC_BEGIN_IGNORE_DEPRECATIONS
+/* {{{ ScriptLang object */
+
+G_DECLARE_FINAL_TYPE (ScriptLang, script_lang, SCRIPT, LANG, GObject)
+
+struct _ScriptLang
+{
+  GObject parent;
+
+  char *langname;
+  unsigned int script_index;
+  unsigned int lang_index;
+  hb_tag_t lang_tag;
+};
+
+struct _ScriptLangClass
+{
+  GObjectClass parent_class;
+};
+
+G_DEFINE_TYPE (ScriptLang, script_lang, G_TYPE_OBJECT)
+
+static void
+script_lang_init (ScriptLang *self)
+{
+}
+
+static void
+script_lang_finalize (GObject *object)
+{
+  ScriptLang *self = SCRIPT_LANG (object);
+
+  g_free (self->langname);
+
+  G_OBJECT_CLASS (script_lang_parent_class)->finalize (object);
+}
+
+static void
+script_lang_class_init (ScriptLangClass *class)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (class);
+
+  object_class->finalize = script_lang_finalize;
+}
+
+static ScriptLang *
+script_lang_new (const char   *langname,
+                 unsigned int  script_index,
+                 unsigned int  lang_index,
+                 hb_tag_t      lang_tag)
+{
+  ScriptLang *self;
+
+  self = g_object_new (script_lang_get_type (), NULL);
+
+  self->langname = g_strdup (langname);
+  self->script_index = script_index;
+  self->lang_index = lang_index;
+  self->lang_tag = lang_tag;
+
+  return self;
+}
+
+static char *
+script_lang_get_langname (ScriptLang *self)
+{
+  return g_strdup (self->langname);
+}
+
+/* }}} */
 
 #define MAKE_TAG(a,b,c,d) (unsigned int)(((a) << 24) | ((b) << 16) | ((c) <<  8) | (d))
 
@@ -95,6 +163,10 @@ demo_free (gpointer data)
   g_clear_pointer (&demo->axes, g_hash_table_unref);
   g_clear_pointer (&demo->text, g_free);
 
+  gtk_style_context_remove_provider_for_display (gdk_display_get_default (),
+                                                 GTK_STYLE_PROVIDER (demo->provider));
+  g_object_unref (demo->provider);
+
   g_free (demo);
 }
 
@@ -472,8 +544,6 @@ update_display (void)
   GString *s;
   char *text;
   gboolean has_feature;
-  GtkTreeIter iter;
-  GtkTreeModel *model;
   PangoFontDescription *desc;
   GList *l;
   PangoAttrList *attrs;
@@ -576,14 +646,13 @@ update_display (void)
 
   features = g_string_free (s, FALSE);
 
-  if (gtk_combo_box_get_active_iter (GTK_COMBO_BOX (demo->script_lang), &iter))
+  if (gtk_drop_down_get_selected (GTK_DROP_DOWN (demo->script_lang)) != 0)
     {
-      hb_tag_t lang_tag;
+      ScriptLang *selected;
 
-      model = gtk_combo_box_get_model (GTK_COMBO_BOX (demo->script_lang));
+      selected = gtk_drop_down_get_selected_item (GTK_DROP_DOWN (demo->script_lang));
-      gtk_tree_model_get (model, &iter, 3, &lang_tag, -1);
 
-      lang = pango_language_from_string (hb_language_to_string (hb_ot_tag_to_language (lang_tag)));
+      lang = pango_language_from_string (hb_language_to_string (hb_ot_tag_to_language (selected->lang_tag)));
     }
   else
     lang = NULL;
@@ -740,40 +809,30 @@ tag_pair_equal (gconstpointer a, gconstpointer b)
   return pair_a->script_tag == pair_b->script_tag && pair_a->lang_tag == pair_b->lang_tag;
 }
 
-static int
+
-script_sort_func (GtkTreeModel *model,
+static GtkOrdering
-                  GtkTreeIter  *a,
+script_sort (const void *item1,
-                  GtkTreeIter  *b,
+             const void *item2,
-                  gpointer      user_data)
+             void       *data)
 {
-  char *sa, *sb;
+  ScriptLang *a = (ScriptLang *)item1;
-  int ret;
+  ScriptLang *b = (ScriptLang *)item2;
 
-  gtk_tree_model_get (model, a, 0, &sa, -1);
+  return strcmp (a->langname, b->langname);
-  gtk_tree_model_get (model, b, 0, &sb, -1);
-
-  ret = strcmp (sa, sb);
-
-  g_free (sa);
-  g_free (sb);
-
-  return ret;
 }
 
 static void
 update_script_combo (void)
 {
-  GtkListStore *store;
+  GListStore *store;
+  GtkSortListModel *sortmodel;
   hb_font_t *hb_font;
-  int i, j, k;
   PangoFont *pango_font;
   GHashTable *tags;
   GHashTableIter iter;
   TagPair *pair;
   char *lang;
   hb_tag_t active;
-  GtkTreeIter active_iter;
-  gboolean have_active = FALSE;
 
   lang = gtk_font_chooser_get_language (GTK_FONT_CHOOSER (demo->font));
 
@@ -783,7 +842,7 @@ update_script_combo (void)
 
   g_free (lang);
 
-  store = gtk_list_store_new (4, G_TYPE_STRING, G_TYPE_UINT, G_TYPE_UINT, G_TYPE_UINT);
+  store = g_list_store_new (script_lang_get_type ());
 
   pango_font = get_pango_font ();
   hb_font = pango_font_get_hb_font (pango_font);
@@ -807,19 +866,19 @@ update_script_combo (void)
 
       hb_face = hb_font_get_face (hb_font);
 
-      for (i= 0; i < 2; i++)
+      for (guint i = 0; i < 2; i++)
         {
           hb_tag_t scripts[80];
           unsigned int script_count = G_N_ELEMENTS (scripts);
 
           hb_ot_layout_table_get_script_tags (hb_face, tables[i], 0, &script_count, scripts);
-          for (j = 0; j < script_count; j++)
+          for (guint j = 0; j < script_count; j++)
             {
               hb_tag_t languages[80];
               unsigned int language_count = G_N_ELEMENTS (languages);
 
               hb_ot_layout_script_get_language_tags (hb_face, tables[i], j, 0, &language_count, languages);
-              for (k = 0; k < language_count; k++)
+              for (guint k = 0; k < language_count; k++)
                 {
                   pair = g_new (TagPair, 1);
                   pair->script_tag = scripts[j];
@@ -839,7 +898,6 @@ update_script_combo (void)
     {
       const char *langname;
       char langbuf[5];
-      GtkTreeIter tree_iter;
 
       if (pair->lang_tag == 0 && pair->script_tag == 0)
         langname = NC_("Language", "None");
@@ -856,31 +914,31 @@ update_script_combo (void)
             }
         }
 
-      gtk_list_store_insert_with_values (store, &tree_iter, -1,
+      g_list_store_append (store, script_lang_new (langname,
-                                         0, langname,
+                                                   pair->script_index,
-                                         1, pair->script_index,
+                                                   pair->lang_index,
-                                         2, pair->lang_index,
+                                                   pair->lang_tag));
-                                         3, pair->lang_tag,
-                                         -1);
-      if (pair->lang_tag == active)
-        {
-          have_active = TRUE;
-          active_iter = tree_iter;
-        }
     }
 
   g_hash_table_destroy (tags);
 
-  gtk_tree_sortable_set_default_sort_func (GTK_TREE_SORTABLE (store),
+  sortmodel = gtk_sort_list_model_new (G_LIST_MODEL (store),
-                                           script_sort_func, NULL, NULL);
+                                       GTK_SORTER (gtk_custom_sorter_new (script_sort, NULL, NULL)));
-  gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE (store),
+  gtk_drop_down_set_model (GTK_DROP_DOWN (demo->script_lang), G_LIST_MODEL (sortmodel));
-                                        GTK_TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID,
+
-                                        GTK_SORT_ASCENDING);
+  for (guint i = 0; i < g_list_model_get_n_items (G_LIST_MODEL (sortmodel)); i++)
-  gtk_combo_box_set_model (GTK_COMBO_BOX (demo->script_lang), GTK_TREE_MODEL (store));
+    {
-  if (have_active)
+      ScriptLang *item = g_list_model_get_item (G_LIST_MODEL (sortmodel), i);
-    gtk_combo_box_set_active_iter (GTK_COMBO_BOX (demo->script_lang), &active_iter);
+      g_object_unref (item);
-  else
+
-    gtk_combo_box_set_active_iter (GTK_COMBO_BOX (demo->script_lang), 0);
+      if (item->lang_tag == active)
+        {
+          gtk_drop_down_set_selected (GTK_DROP_DOWN (demo->script_lang), i);
+          break;
+        }
+    }
+
+  g_object_unref (sortmodel);
 }
 
 static char *
@@ -905,27 +963,19 @@ static void
 update_features (void)
 {
   int i, j;
-  GtkTreeModel *model;
-  GtkTreeIter iter;
-  guint script_index, lang_index;
-  hb_tag_t lang_tag;
   PangoFont *pango_font;
   hb_font_t *hb_font;
   GList *l;
+  ScriptLang *selected;
 
   /* set feature presence checks from the font features */
 
-  if (!gtk_combo_box_get_active_iter (GTK_COMBO_BOX (demo->script_lang), &iter))
+  if (gtk_drop_down_get_selected (GTK_DROP_DOWN (demo->script_lang)) == 0)
     return;
 
-  model = gtk_combo_box_get_model (GTK_COMBO_BOX (demo->script_lang));
+  selected = gtk_drop_down_get_selected_item (GTK_DROP_DOWN (demo->script_lang));
-  gtk_tree_model_get (model, &iter,
-                      1, &script_index,
-                      2, &lang_index,
-                      3, &lang_tag,
-                      -1);
 
-  if (lang_tag == 0) /* None is selected */
+  if (selected->lang_tag == 0) /* None is selected */
     {
       for (l = demo->feature_items; l; l = l->next)
         {
@@ -966,8 +1016,8 @@ update_features (void)
 
           hb_ot_layout_language_get_feature_tags (hb_face,
                                                   tables[i],
-                                                  script_index,
+                                                  selected->script_index,
-                                                  lang_index,
+                                                  selected->lang_index,
                                                   0,
                                                   &count,
                                                   features);
@@ -989,8 +1039,8 @@ update_features (void)
 
                   hb_ot_layout_language_find_feature (hb_face,
                                                       tables[i],
-                                                      script_index,
+                                                      selected->script_index,
-                                                      lang_index,
+                                                      selected->lang_index,
                                                       features[j],
                                                       &feature_index);
 
@@ -1324,8 +1374,7 @@ free_instance (gpointer data)
 static void
 add_instance (hb_face_t     *face,
               unsigned int   index,
-              GtkWidget    *combo,
+              GtkStringList *strings)
-              int           pos)
 {
   Instance *instance;
   hb_ot_name_id_t name_id;
@@ -1341,20 +1390,20 @@ add_instance (hb_face_t    *face,
   instance->index = index;
 
   g_hash_table_add (demo->instances, instance);
-  gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (combo), instance->name);
+  gtk_string_list_append (GTK_STRING_LIST (strings), instance->name);
 }
 
 static void
 unset_instance (GtkAdjustment *adjustment)
 {
   if (demo->instance_combo)
-    gtk_combo_box_set_active (GTK_COMBO_BOX (demo->instance_combo), 0);
+    gtk_drop_down_set_selected (GTK_DROP_DOWN (demo->instance_combo), 0);
 }
 
 static void
-instance_changed (GtkComboBox *combo)
+instance_changed (GtkDropDown *combo)
 {
-  char *text;
+  const char *text;
   Instance *instance;
   Instance ikey;
   int i;
@@ -1366,11 +1415,12 @@ instance_changed (GtkComboBox *combo)
   hb_font_t *hb_font;
   hb_face_t *hb_face;
 
-  text = gtk_combo_box_text_get_active_text (GTK_COMBO_BOX_TEXT (combo));
+  text = gtk_string_list_get_string (GTK_STRING_LIST (gtk_drop_down_get_model (combo)),
+                                     gtk_drop_down_get_selected (combo));
   if (text[0] == '\0')
     goto out;
 
-  ikey.name = text;
+  ikey.name = (char *) text;
   instance = g_hash_table_lookup (demo->instances, &ikey);
   if (!instance)
     {
@@ -1411,7 +1461,6 @@ instance_changed (GtkComboBox *combo)
     }
 
 out:
-  g_free (text);
   g_clear_object (&pango_font);
   g_free (ai);
   g_free (coords);
@@ -1521,6 +1570,7 @@ update_font_variations (void)
     {
       GtkWidget *label;
       GtkWidget *combo;
+      GtkStringList *strings;
 
       label = gtk_label_new ("Instance");
       gtk_label_set_xalign (GTK_LABEL (label), 0);
@@ -1528,26 +1578,28 @@ update_font_variations (void)
       gtk_widget_set_valign (label, GTK_ALIGN_BASELINE);
       gtk_grid_attach (GTK_GRID (demo->variations_grid), label, 0, -1, 1, 1);
 
-      combo = gtk_combo_box_text_new ();
+      strings = gtk_string_list_new (NULL);
+      combo = gtk_drop_down_new (G_LIST_MODEL (strings), NULL);
+
       gtk_widget_set_halign (combo, GTK_ALIGN_START);
       gtk_widget_set_valign (combo, GTK_ALIGN_BASELINE);
 
-      gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (combo), "");
+      gtk_string_list_append (strings, "");
 
       for (i = 0; i < hb_ot_var_get_named_instance_count (hb_face); i++)
-        add_instance (hb_face, i, combo, i);
+        add_instance (hb_face, i, strings);
 
       for (i = 0; i < hb_ot_var_get_named_instance_count (hb_face); i++)
         {
           if (matches_instance (hb_face, i, n_axes, design_coords))
             {
-              gtk_combo_box_set_active (GTK_COMBO_BOX (combo), i + 1);
+              gtk_drop_down_set_selected (GTK_DROP_DOWN (combo), i + 1);
               break;
             }
         }
 
       gtk_grid_attach (GTK_GRID (demo->variations_grid), combo, 1, -1, 3, 1);
-      g_signal_connect (combo, "changed", G_CALLBACK (instance_changed), NULL);
+      g_signal_connect (combo, "notify::selecte", G_CALLBACK (instance_changed), NULL);
       demo->instance_combo = combo;
    }
 
@@ -1694,6 +1746,7 @@ do_font_features (GtkWidget *do_widget)
       GtkBuilder *builder;
       GtkBuilderScope *scope;
       GtkEventController *controller;
+      GtkExpression *expression;
 
       builder = gtk_builder_new ();
 
@@ -1727,6 +1780,9 @@ do_font_features (GtkWidget *do_widget)
       demo->description = GTK_WIDGET (gtk_builder_get_object (builder, "description"));
       demo->font = GTK_WIDGET (gtk_builder_get_object (builder, "font"));
       demo->script_lang = GTK_WIDGET (gtk_builder_get_object (builder, "script_lang"));
+      expression = gtk_cclosure_expression_new (G_TYPE_STRING, NULL, 0, NULL, G_CALLBACK (script_lang_get_langname), NULL, NULL);
+      gtk_drop_down_set_expression (GTK_DROP_DOWN (demo->script_lang), expression);
+      gtk_expression_unref (expression);
       demo->feature_list = GTK_WIDGET (gtk_builder_get_object (builder, "feature_list"));
       demo->stack = GTK_WIDGET (gtk_builder_get_object (builder, "stack"));
       demo->entry = GTK_WIDGET (gtk_builder_get_object (builder, "entry"));
@@ -1745,7 +1801,7 @@ do_font_features (GtkWidget *do_widget)
       demo->swin = GTK_WIDGET (gtk_builder_get_object (builder, "swin"));
 
       demo->provider = gtk_css_provider_new ();
-      gtk_style_context_add_provider (gtk_widget_get_style_context (demo->swin),
+      gtk_style_context_add_provider_for_display (gdk_display_get_default (),
                                                   GTK_STYLE_PROVIDER (demo->provider), 800);
 
       basic_value_changed (demo->size_adjustment, demo->size_entry);
@@ -1824,3 +1880,5 @@ do_font_features (GtkWidget *do_widget)
 
   return window;
 }
+
+/* vim:set foldmethod=marker expandtab: */

demos/gtk-demo/font_features.ui

@@ -259,16 +259,10 @@
                           <object class="GtkBox" id="feature_list">
                             <property name="orientation">vertical</property>
                             <child>
-                              <object class="GtkComboBox" id="script_lang">
+                              <object class="GtkDropDown" id="script_lang">
                                 <property name="tooltip-text" translatable="yes">Language System</property>
                                 <property name="margin-top">10</property>
-                                <signal name="changed" handler="font_features_script_changed" swapped="no"/>
+                                <signal name="notify::selected" handler="font_features_script_changed" swapped="no"/>
-                                <child>
-                                  <object class="GtkCellRendererText"/>
-                                  <attributes>
-                                    <attribute name="text">0</attribute>
-                                  </attributes>
-                                </child>
                               </object>
                             </child>
                           </object>

gtk/gtk.h

@@ -79,6 +79,8 @@
 #include <gtk/gtkcenterlayout.h>
 #include <gtk/gtkcheckbutton.h>
 #include <gtk/gtkcolorbutton.h>
+#include <gtk/gtkcolorchoice.h>
+#include <gtk/gtkcolorchoicebutton.h>
 #include <gtk/gtkcolorchooser.h>
 #include <gtk/gtkcolorchooserdialog.h>
 #include <gtk/gtkcolorchooserwidget.h>

gtk/gtkcolorchoice.c

@@ -0,0 +1,195 @@
+/*
+ * GTK - The GIMP Toolkit
+ * Copyright (C) 2022 Red Hat, Inc.
+ * All rights reserved.
+ *
+ * This Library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include "gtkcolorchoice.h"
+#include "gtkcolorchooserwindowprivate.h"
+#include "gtkcolorchooser.h"
+#include "gtkbutton.h"
+
+/* {{{ GObject implementation */
+
+struct _GtkColorChoice
+{
+  GObject parent_instance;
+
+  GtkWindow *parent;
+  char *title;
+  gboolean use_alpha;
+
+  GTask *task;
+  GtkColorChooserWindow *window;
+};
+
+G_DEFINE_TYPE (GtkColorChoice, gtk_color_choice, G_TYPE_OBJECT)
+
+static void
+gtk_color_choice_init (GtkColorChoice *self)
+{
+}
+
+static void
+gtk_color_choice_finalize (GObject *object)
+{
+  GtkColorChoice *self = GTK_COLOR_CHOICE (object);
+
+  g_assert (self->task == NULL);
+  g_assert (self->window == NULL);
+
+  g_free (self->title);
+
+  G_OBJECT_CLASS (gtk_color_choice_parent_class)->finalize (object);
+}
+
+static void
+gtk_color_choice_class_init (GtkColorChoiceClass *class)
+{
+  G_OBJECT_CLASS (class)->finalize = gtk_color_choice_finalize;
+}
+
+/* }}} */
+/* {{{ Public API */
+/* {{{ Constructor */
+
+GtkColorChoice *
+gtk_color_choice_new (GtkWindow  *parent,
+                      const char *title,
+                      gboolean    use_alpha)
+{
+  GtkColorChoice *self;
+
+  self = g_object_new (GTK_TYPE_COLOR_CHOICE, NULL);
+
+  self->parent = parent;
+  self->title = g_strdup (title);
+  self->use_alpha = use_alpha;
+
+  return self;
+}
+
+/* }}} */
+/* {{{ Async API */
+
+enum
+{
+  RESPONSE_OK,
+  RESPONSE_CANCEL
+};
+
+static void response_cb (GtkColorChoice *self,
+                         int             response);
+
+static void
+cancelled_cb (GCancellable   *cancellable,
+              GtkColorChoice *self)
+{
+  response_cb (self, RESPONSE_CANCEL);
+}
+
+static void
+response_cb (GtkColorChoice *self,
+             int             response)
+{
+  GCancellable *cancellable;
+
+  g_assert (self->window != NULL);
+  g_assert (self->task != NULL);
+
+  cancellable = g_task_get_cancellable (self->task);
+
+  if (cancellable)
+    g_signal_handlers_disconnect_by_func (cancellable, cancelled_cb, self);
+
+  if (response == RESPONSE_OK)
+    {
+      GdkRGBA color;
+
+      gtk_color_chooser_window_save_color (GTK_COLOR_CHOOSER_WINDOW (self->window));
+
+      gtk_color_chooser_get_rgba (GTK_COLOR_CHOOSER (self->window), &color);
+      g_task_return_pointer (self->task, gdk_rgba_copy (&color), (GDestroyNotify) gdk_rgba_free);
+    }
+  else
+    g_task_return_new_error (self->task, G_IO_ERROR, G_IO_ERROR_CANCELLED, "Cancelled");
+
+  g_clear_pointer ((GtkWindow **)&self->window, gtk_window_destroy);
+  g_clear_object (&self->task);
+}
+
+static void
+ok_button_clicked (GtkButton      *button,
+                   GtkColorChoice *self)
+{
+  response_cb (self, RESPONSE_OK);
+}
+
+static void
+cancel_button_clicked (GtkButton      *button,
+                       GtkColorChoice *self)
+{
+  response_cb (self, RESPONSE_CANCEL);
+}
+
+void
+gtk_color_choice_choose (GtkColorChoice       *self,
+                         const GdkRGBA        *initial_color,
+                         GCancellable         *cancellable,
+                         GAsyncReadyCallback   callback,
+                         gpointer              user_data)
+{
+  GtkColorChooserWindow *window;
+  GTask *task;
+
+  g_return_if_fail (GTK_IS_COLOR_CHOICE (self));
+
+  window = GTK_COLOR_CHOOSER_WINDOW (gtk_color_chooser_window_new (self->title, self->parent));
+  gtk_color_chooser_set_use_alpha (GTK_COLOR_CHOOSER (window), self->use_alpha);
+  if (initial_color)
+    gtk_color_chooser_set_rgba (GTK_COLOR_CHOOSER (window), initial_color);
+
+  if (cancellable)
+    g_signal_connect (cancellable, "cancelled", G_CALLBACK (cancelled_cb), self);
+
+  g_signal_connect (gtk_color_chooser_window_get_ok_button (window), "clicked",
+                    G_CALLBACK (ok_button_clicked), self);
+  g_signal_connect (gtk_color_chooser_window_get_cancel_button (window), "clicked",
+                    G_CALLBACK (cancel_button_clicked), self);
+
+  task = g_task_new (self, cancellable, callback, user_data);
+  g_task_set_source_tag (task, gtk_color_choice_choose);
+
+  self->window = window;
+  self->task = task;
+
+  gtk_window_present (GTK_WINDOW (window));
+}
+
+GdkRGBA *
+gtk_color_choice_choose_finish (GtkColorChoice  *self,
+                                GAsyncResult    *result,
+                                GError         **error)
+{
+  return g_task_propagate_pointer (G_TASK (result), error);
+}
+
+/* }}} */
+/* }}} */
+
+/* vim:set foldmethod=marker expandtab: */

gtk/gtkcolorchoice.h

@@ -0,0 +1,52 @@
+/* GTK - The GIMP Toolkit
+ *
+ * Copyright (C) 2022 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/>.
+ */
+
+#pragma once
+
+#if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
+#error "Only <gtk/gtk.h> can be included directly."
+#endif
+
+#include <gdk/gdk.h>
+#include <gtk/gtkwindow.h>
+
+G_BEGIN_DECLS
+
+#define GTK_TYPE_COLOR_CHOICE (gtk_color_choice_get_type ())
+
+GDK_AVAILABLE_IN_4_10
+G_DECLARE_FINAL_TYPE (GtkColorChoice, gtk_color_choice, GTK, COLOR_CHOICE, GObject)
+
+GDK_AVAILABLE_IN_4_10
+GtkColorChoice * gtk_color_choice_new           (GtkWindow            *parent,
+                                                 const char           *title,
+                                                 gboolean              use_alpha);
+
+GDK_AVAILABLE_IN_4_10
+void             gtk_color_choice_choose        (GtkColorChoice       *choice,
+                                                 const GdkRGBA        *initial_color,
+                                                 GCancellable         *cancellable,
+                                                 GAsyncReadyCallback   callback,
+                                                 gpointer              user_data);
+
+GDK_AVAILABLE_IN_4_10
+GdkRGBA *        gtk_color_choice_choose_finish (GtkColorChoice        *self,
+                                                 GAsyncResult          *result,
+                                                 GError               **error);
+
+G_END_DECLS

gtk/gtkcolorchoicebutton.c

@@ -0,0 +1,409 @@
+/*
+ * GTK - The GIMP Toolkit
+ * Copyright (C) 2022 Red Hat, Inc.
+ * All rights reserved.
+ *
+ * This Library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include "gtkcolorchoicebutton.h"
+#include "gtkcolorchoice.h"
+
+#include "gtkbinlayout.h"
+#include "gtkbutton.h"
+#include "gtkcolorswatchprivate.h"
+#include "gtkdragsource.h"
+#include "gtkdroptarget.h"
+#include <glib/gi18n-lib.h>
+//#include "gtkmain.h"
+#include "gtkprivate.h"
+//#include "gtksnapshot.h"
+#include "gtkwidgetprivate.h"
+
+
+static gboolean drop           (GtkDropTarget        *dest,
+                                const GValue         *value,
+                                double                x,
+                                double                y,
+                                GtkColorChoiceButton *self);
+static GdkContentProvider *
+                  drag_prepare (GtkDragSource        *source,
+                                double                x,
+                                double                y,
+                                GtkColorChoiceButton *self);
+static void     button_clicked (GtkColorChoiceButton *self);
+
+/* {{{ GObject implementation */
+
+struct _GtkColorChoiceButton
+{
+  GtkWidget parent_instance;
+
+  GdkRGBA color;
+  gboolean use_alpha;
+  char *title;
+
+  GtkWidget *button;
+  GtkWidget *swatch;
+  GtkColorChoice *choice;
+};
+
+/* Properties */
+enum
+{
+  PROP_COLOR = 1,
+  PROP_USE_ALPHA,
+  PROP_TITLE,
+  NUM_PROPERTIES
+};
+
+static GParamSpec *properties[NUM_PROPERTIES];
+
+G_DEFINE_TYPE (GtkColorChoiceButton, gtk_color_choice_button, GTK_TYPE_WIDGET)
+
+static void
+gtk_color_choice_button_init (GtkColorChoiceButton *self)
+{
+  PangoLayout *layout;
+  PangoRectangle rect;
+  GtkDragSource *source;
+  GtkDropTarget *dest;
+
+  self->use_alpha = TRUE;
+  self->title = g_strdup ("");
+
+  self->button = gtk_button_new ();
+  g_signal_connect_swapped (self->button, "clicked", G_CALLBACK (button_clicked), self);
+  gtk_widget_set_parent (self->button, GTK_WIDGET (self));
+
+  self->swatch = g_object_new (GTK_TYPE_COLOR_SWATCH,
+                               "accessible-role", GTK_ACCESSIBLE_ROLE_IMG,
+                               "selectable", FALSE,
+                               "has-menu", FALSE,
+                               "can-drag", FALSE,
+                               NULL);
+  gtk_widget_set_can_focus (self->swatch, FALSE);
+  gtk_widget_remove_css_class (self->swatch, "activatable");
+
+  layout = gtk_widget_create_pango_layout (GTK_WIDGET (self), "Black");
+  pango_layout_get_pixel_extents (layout, NULL, &rect);
+  g_object_unref (layout);
+
+  gtk_widget_set_size_request (self->swatch, rect.width, rect.height);
+
+  gtk_button_set_child (GTK_BUTTON (self->button), self->swatch);
+
+  dest = gtk_drop_target_new (GDK_TYPE_RGBA, GDK_ACTION_COPY);
+  g_signal_connect (dest, "drop", G_CALLBACK (drop), self);
+  gtk_widget_add_controller (GTK_WIDGET (self->button), GTK_EVENT_CONTROLLER (dest));
+
+  source = gtk_drag_source_new ();
+  g_signal_connect (source, "prepare", G_CALLBACK (drag_prepare), self);
+  gtk_event_controller_set_propagation_phase (GTK_EVENT_CONTROLLER (source),
+                                              GTK_PHASE_CAPTURE);
+  gtk_widget_add_controller (self->button, GTK_EVENT_CONTROLLER (source));
+  gtk_widget_add_css_class (self->button, "color");
+}
+
+static void
+gtk_color_choice_button_set_property (GObject      *object,
+                                      guint         param_id,
+                                      const GValue *value,
+                                      GParamSpec   *pspec)
+{
+  GtkColorChoiceButton *self = GTK_COLOR_CHOICE_BUTTON (object);
+
+  switch (param_id)
+    {
+    case PROP_COLOR:
+      gtk_color_choice_button_set_color (self, g_value_get_boxed (value));
+      break;
+
+    case PROP_USE_ALPHA:
+      gtk_color_choice_button_set_use_alpha (self, g_value_get_boolean (value));
+      break;
+
+    case PROP_TITLE:
+      gtk_color_choice_button_set_title (self, g_value_get_string (value));
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
+      break;
+    }
+}
+
+static void
+gtk_color_choice_button_get_property (GObject    *object,
+                                      guint       param_id,
+                                      GValue     *value,
+                                      GParamSpec *pspec)
+{
+  GtkColorChoiceButton *self = GTK_COLOR_CHOICE_BUTTON (object);
+
+  switch (param_id)
+    {
+    case PROP_COLOR:
+      g_value_set_boxed (value, &self->color);
+      break;
+
+    case PROP_USE_ALPHA:
+      g_value_set_boolean (value, self->use_alpha);
+      break;
+
+    case PROP_TITLE:
+      g_value_set_string (value, self->title);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
+      break;
+    }
+}
+
+static void
+gtk_color_choice_button_dispose (GObject *object)
+{
+  GtkColorChoiceButton *self = GTK_COLOR_CHOICE_BUTTON (object);
+
+  g_clear_pointer (&self->button, gtk_widget_unparent);
+
+  G_OBJECT_CLASS (gtk_color_choice_button_parent_class)->dispose (object);
+}
+
+static void
+gtk_color_choice_button_finalize (GObject *object)
+{
+  GtkColorChoiceButton *self = GTK_COLOR_CHOICE_BUTTON (object);
+
+  g_free (self->title);
+
+  G_OBJECT_CLASS (gtk_color_choice_button_parent_class)->finalize (object);
+}
+
+static void
+gtk_color_choice_button_class_init (GtkColorChoiceButtonClass *class)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (class);
+  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
+
+  object_class->get_property = gtk_color_choice_button_get_property;
+  object_class->set_property = gtk_color_choice_button_set_property;
+  object_class->dispose = gtk_color_choice_button_dispose;
+  object_class->finalize = gtk_color_choice_button_finalize;
+
+  widget_class->grab_focus = gtk_widget_grab_focus_child;
+  widget_class->focus = gtk_widget_focus_child;
+
+  properties[PROP_COLOR] =
+      g_param_spec_boxed ("color", NULL, NULL,
+                          GDK_TYPE_RGBA,
+                          G_PARAM_READWRITE|G_PARAM_STATIC_STRINGS);
+
+  properties[PROP_USE_ALPHA] =
+      g_param_spec_boolean ("use-alpha", NULL, NULL,
+                            TRUE,
+                            G_PARAM_READWRITE|G_PARAM_STATIC_STRINGS);
+
+  properties[PROP_TITLE] =
+      g_param_spec_string ("title", NULL, NULL,
+                           "",
+                           G_PARAM_READWRITE|G_PARAM_STATIC_STRINGS);
+
+  g_object_class_install_properties (object_class, NUM_PROPERTIES, properties);
+
+  gtk_widget_class_set_layout_manager_type (widget_class, GTK_TYPE_BIN_LAYOUT);
+  gtk_widget_class_set_css_name (widget_class, "colorbutton");
+}
+
+/* }}} */
+/* {{{ Private API, callbacks */
+
+static guint
+scale_round (double value,
+             double scale)
+{
+  value = floor (value * scale + 0.5);
+  value = CLAMP (value, 0, scale);
+  return (guint)value;
+}
+
+static char *
+accessible_color_name (const GdkRGBA *color)
+{
+  if (color->alpha < 1.0)
+    return g_strdup_printf (_("Red %d%%, Green %d%%, Blue %d%%, Alpha %d%%"),
+                            scale_round (color->red, 100),
+                            scale_round (color->green, 100),
+                            scale_round (color->blue, 100),
+                            scale_round (color->alpha, 100));
+  else
+    return g_strdup_printf (_("Red %d%%, Green %d%%, Blue %d%%"),
+                            scale_round (color->red, 100),
+                            scale_round (color->green, 100),
+                            scale_round (color->blue, 100));
+}
+
+static gboolean
+drop (GtkDropTarget        *dest,
+      const GValue         *value,
+      double                x,
+      double                y,
+      GtkColorChoiceButton *self)
+{
+  GdkRGBA *color = g_value_get_boxed (value);
+
+  gtk_color_choice_button_set_color (self, color);
+
+  return TRUE;
+}
+
+static GdkContentProvider *
+drag_prepare (GtkDragSource        *source,
+              double                x,
+              double                y,
+              GtkColorChoiceButton *self)
+{
+  return gdk_content_provider_new_typed (GDK_TYPE_RGBA, &self->color);
+}
+
+static void
+color_chosen (GObject      *source,
+              GAsyncResult *result,
+              gpointer      data)
+{
+  GtkColorChoice *choice = GTK_COLOR_CHOICE (source);
+  GtkColorChoiceButton *self = data;
+  GdkRGBA *color;
+  GError *error = NULL;
+
+  color = gtk_color_choice_choose_finish (choice, result, &error);
+  if (color)
+    {
+      gtk_color_choice_button_set_color (self, color);
+      gdk_rgba_free (color);
+    }
+  else
+    {
+      g_print ("%s\n", error->message);
+      g_error_free (error);
+    }
+}
+
+static void
+button_clicked (GtkColorChoiceButton *self)
+{
+  GtkRoot *root;
+  GtkWindow *parent = NULL;
+  GtkColorChoice *choice;
+
+  root = gtk_widget_get_root (GTK_WIDGET (self));
+  if (GTK_IS_WINDOW (root))
+    parent = GTK_WINDOW (root);
+
+  choice = gtk_color_choice_new (parent, self->title, self->use_alpha);
+  gtk_color_choice_choose (choice, &self->color, NULL, color_chosen, self);
+  g_object_unref (choice);
+}
+
+/* }}} */
+/* {{{ Public API */
+/* {{{ Constructor */
+
+GtkColorChoiceButton *
+gtk_color_choice_button_new (void)
+{
+  return g_object_new (GTK_TYPE_COLOR_CHOICE_BUTTON, NULL);
+}
+
+/* }}} */
+/* {{{ Setters and Getters */
+
+void
+gtk_color_choice_button_set_color (GtkColorChoiceButton *self,
+                                   const GdkRGBA        *color)
+{
+  char *text;
+
+  g_return_if_fail (GTK_IS_COLOR_CHOICE_BUTTON (self));
+  g_return_if_fail (color != NULL);
+
+  if (gdk_rgba_equal (&self->color, color))
+    return;
+
+  self->color = *color;
+  gtk_color_swatch_set_rgba (GTK_COLOR_SWATCH (self->swatch), color);
+
+  text = accessible_color_name (color);
+  gtk_accessible_update_property (GTK_ACCESSIBLE (self->swatch),
+                                  GTK_ACCESSIBLE_PROPERTY_LABEL, text,
+                                  -1);
+  g_free (text);
+
+  g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_COLOR]);
+}
+
+const GdkRGBA *
+gtk_color_choice_button_get_color (GtkColorChoiceButton *self)
+{
+  g_return_val_if_fail (GTK_IS_COLOR_CHOICE_BUTTON (self), NULL);
+
+  return &self->color;
+}
+
+void
+gtk_color_choice_button_set_use_alpha (GtkColorChoiceButton *self,
+                                       gboolean              use_alpha)
+{
+  g_return_if_fail (GTK_IS_COLOR_CHOICE_BUTTON (self));
+
+  if (self->use_alpha == use_alpha)
+    return;
+
+  self->use_alpha = use_alpha;
+  g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_USE_ALPHA]);
+}
+
+gboolean
+gtk_color_choice_button_get_use_alpha (GtkColorChoiceButton *self)
+{
+  g_return_val_if_fail (GTK_IS_COLOR_CHOICE_BUTTON (self), TRUE);
+
+  return self->use_alpha;
+}
+
+void
+gtk_color_choice_button_set_title (GtkColorChoiceButton *self,
+                                   const char           *title)
+{
+  char *new_title;
+
+  g_return_if_fail (GTK_IS_COLOR_CHOICE_BUTTON (self));
+  g_return_if_fail (title != NULL);
+
+  if (g_str_equal (self->title, title))
+    return;
+
+  new_title = g_strdup (title);
+  g_free (self->title);
+  self->title = new_title;
+  g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_TITLE]);
+}
+
+/* }}} */
+/* }}} */
+
+/* vim:set foldmethod=marker expandtab: */

gtk/gtkcolorchoicebutton.h

@@ -0,0 +1,60 @@
+/*
+ * GTK - The GIMP Toolkit
+ * Copyright (C) 2022 Red Hat, Inc.
+ * All rights reserved.
+ *
+ * This Library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
+#error "Only <gtk/gtk.h> can be included directly."
+#endif
+
+#include <gtk/gtkwidget.h>
+
+G_BEGIN_DECLS
+
+#define GTK_TYPE_COLOR_CHOICE_BUTTON (gtk_color_choice_button_get_type ())
+
+GDK_AVAILABLE_IN_4_10
+G_DECLARE_FINAL_TYPE (GtkColorChoiceButton, gtk_color_choice_button, GTK, COLOR_CHOICE_BUTTON, GtkWidget)
+
+GDK_AVAILABLE_IN_4_10
+GtkColorChoiceButton *
+                gtk_color_choice_button_new             (void);
+
+GDK_AVAILABLE_IN_4_10
+void            gtk_color_choice_button_set_color       (GtkColorChoiceButton *self,
+                                                         const GdkRGBA        *color);
+
+GDK_AVAILABLE_IN_4_10
+const GdkRGBA * gtk_color_choice_button_get_color       (GtkColorChoiceButton *self);
+
+GDK_AVAILABLE_IN_4_10
+void            gtk_color_choice_button_set_use_alpha   (GtkColorChoiceButton *self,
+                                                         gboolean              use_alpha);
+
+GDK_AVAILABLE_IN_4_10
+gboolean        gtk_color_choice_button_get_use_alpha   (GtkColorChoiceButton *self);
+
+GDK_AVAILABLE_IN_4_10
+void            gtk_color_choice_button_set_title       (GtkColorChoiceButton *self,
+                                                         const char           *title);
+
+GDK_AVAILABLE_IN_4_10
+const char *    gtk_color_choice_button_get_title       (GtkColorChoiceButton *self);
+
+G_END_DECLS

gtk/gtkcolorchooserwindow.c

@@ -0,0 +1,278 @@
+/* GTK - The GIMP Toolkit
+ * Copyright (C) 2012 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/>.
+ */
+
+#include "config.h"
+
+#include "gtkwindow.h"
+#include "gtkwindowprivate.h"
+#include "gtkbutton.h"
+#include "gtkbox.h"
+#include "gtkprivate.h"
+#include "gtksettings.h"
+
+#include "gtkcolorchooserprivate.h"
+#include "gtkcolorchooserwindowprivate.h"
+#include "gtkcolorchooserwidget.h"
+
+/*
+ * GtkColorChooserWindow:
+ *
+ * A window for choosing a color.
+ *
+ * ![An example GtkColorChooserWindow](colorchooser.png)
+ *
+ * `GtkColorChooserWindow` implements the [iface@Gtk.ColorChooser] interface
+ * and does not provide much API of its own.
+ *
+ * To create a `GtkColorChooserWindow`, use [ctor@Gtk.ColorChooserWindow.new].
+ *
+ * To change the initially selected color, use
+ * [method@Gtk.ColorChooser.set_rgba]. To get the selected color use
+ * [method@Gtk.ColorChooser.get_rgba].
+ */
+
+struct _GtkColorChooserWindow
+{
+  GtkWindow parent_instance;
+
+  GtkWidget *chooser;
+  GtkWidget *ok_button;
+  GtkWidget *cancel_button;
+};
+
+enum
+{
+  PROP_RGBA = 1,
+  PROP_USE_ALPHA,
+  PROP_SHOW_EDITOR
+};
+
+static void gtk_color_chooser_window_iface_init (GtkColorChooserInterface *iface);
+
+G_DEFINE_TYPE_WITH_CODE (GtkColorChooserWindow, gtk_color_chooser_window, GTK_TYPE_WINDOW,
+                         G_IMPLEMENT_INTERFACE (GTK_TYPE_COLOR_CHOOSER,
+                                                gtk_color_chooser_window_iface_init))
+
+static void
+propagate_notify (GObject               *o,
+                  GParamSpec            *pspec,
+                  GtkColorChooserWindow *self)
+{
+  g_object_notify (G_OBJECT (self), pspec->name);
+}
+
+static void
+color_activated_cb (GtkColorChooser *chooser,
+                    GdkRGBA         *color,
+                    GtkColorChooserWindow *window)
+{
+  g_signal_emit_by_name (window->ok_button, "clicked");
+}
+
+static void
+gtk_color_chooser_window_init (GtkColorChooserWindow *self)
+{
+  gtk_widget_init_template (GTK_WIDGET (self));
+}
+
+static void
+gtk_color_chooser_window_unmap (GtkWidget *widget)
+{
+  GTK_WIDGET_CLASS (gtk_color_chooser_window_parent_class)->unmap (widget);
+
+  /* We never want the window to come up with the editor,
+   * even if it was showing the editor the last time it was used.
+   */
+  g_object_set (widget, "show-editor", FALSE, NULL);
+}
+
+static void
+gtk_color_chooser_window_get_property (GObject    *object,
+                                       guint       prop_id,
+                                       GValue     *value,
+                                       GParamSpec *pspec)
+{
+  GtkColorChooserWindow *self = GTK_COLOR_CHOOSER_WINDOW (object);
+
+  switch (prop_id)
+    {
+    case PROP_RGBA:
+      {
+        GdkRGBA color;
+
+        gtk_color_chooser_get_rgba (GTK_COLOR_CHOOSER (self), &color);
+        g_value_set_boxed (value, &color);
+      }
+      break;
+    case PROP_USE_ALPHA:
+      g_value_set_boolean (value, gtk_color_chooser_get_use_alpha (GTK_COLOR_CHOOSER (self->chooser)));
+      break;
+    case PROP_SHOW_EDITOR:
+      {
+        gboolean show_editor;
+        g_object_get (self->chooser, "show-editor", &show_editor, NULL);
+        g_value_set_boolean (value, show_editor);
+      }
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+    }
+}
+
+static void
+gtk_color_chooser_window_set_property (GObject      *object,
+                                       guint         prop_id,
+                                       const GValue *value,
+                                       GParamSpec   *pspec)
+{
+  GtkColorChooserWindow *self = GTK_COLOR_CHOOSER_WINDOW (object);
+
+  switch (prop_id)
+    {
+    case PROP_RGBA:
+      gtk_color_chooser_set_rgba (GTK_COLOR_CHOOSER (self), g_value_get_boxed (value));
+      break;
+    case PROP_USE_ALPHA:
+      if (gtk_color_chooser_get_use_alpha (GTK_COLOR_CHOOSER (self->chooser)) != g_value_get_boolean (value))
+        {
+          gtk_color_chooser_set_use_alpha (GTK_COLOR_CHOOSER (self->chooser), g_value_get_boolean (value));
+          g_object_notify_by_pspec (object, pspec);
+        }
+      break;
+    case PROP_SHOW_EDITOR:
+      g_object_set (self->chooser,
+                    "show-editor", g_value_get_boolean (value),
+                    NULL);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+    }
+}
+
+static void
+gtk_color_chooser_window_dispose (GObject *object)
+{
+  GtkColorChooserWindow *self = GTK_COLOR_CHOOSER_WINDOW (object);
+
+  g_clear_pointer (&self->chooser, gtk_widget_unparent);
+
+  G_OBJECT_CLASS (gtk_color_chooser_window_parent_class)->dispose (object);
+}
+
+static void
+gtk_color_chooser_window_class_init (GtkColorChooserWindowClass *class)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (class);
+  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
+
+  object_class->dispose = gtk_color_chooser_window_dispose;
+  object_class->get_property = gtk_color_chooser_window_get_property;
+  object_class->set_property = gtk_color_chooser_window_set_property;
+
+  widget_class->unmap = gtk_color_chooser_window_unmap;
+
+  g_object_class_override_property (object_class, PROP_RGBA, "rgba");
+  g_object_class_override_property (object_class, PROP_USE_ALPHA, "use-alpha");
+  g_object_class_install_property (object_class, PROP_SHOW_EDITOR,
+      g_param_spec_boolean ("show-editor", NULL, NULL,
+                            FALSE, GTK_PARAM_READWRITE));
+
+  gtk_widget_class_set_template_from_resource (widget_class,
+                                               "/org/gtk/libgtk/ui/gtkcolorchooserwindow.ui");
+  gtk_widget_class_bind_template_child (widget_class, GtkColorChooserWindow, chooser);
+  gtk_widget_class_bind_template_child (widget_class, GtkColorChooserWindow, ok_button);
+  gtk_widget_class_bind_template_child (widget_class, GtkColorChooserWindow, cancel_button);
+  gtk_widget_class_bind_template_callback (widget_class, propagate_notify);
+  gtk_widget_class_bind_template_callback (widget_class, color_activated_cb);
+}
+
+static void
+gtk_color_chooser_window_get_rgba (GtkColorChooser *chooser,
+                                   GdkRGBA         *color)
+{
+  GtkColorChooserWindow *self  = GTK_COLOR_CHOOSER_WINDOW (chooser);
+
+  gtk_color_chooser_get_rgba (GTK_COLOR_CHOOSER (self->chooser), color);
+}
+
+static void
+gtk_color_chooser_window_set_rgba (GtkColorChooser *chooser,
+                                   const GdkRGBA   *color)
+{
+  GtkColorChooserWindow *self = GTK_COLOR_CHOOSER_WINDOW (chooser);
+
+  gtk_color_chooser_set_rgba (GTK_COLOR_CHOOSER (self->chooser), color);
+}
+
+static void
+gtk_color_chooser_window_add_palette (GtkColorChooser *chooser,
+                                      GtkOrientation   orientation,
+                                      int              colors_per_line,
+                                      int              n_colors,
+                                      GdkRGBA         *colors)
+{
+  GtkColorChooserWindow *self = GTK_COLOR_CHOOSER_WINDOW (chooser);
+
+  gtk_color_chooser_add_palette (GTK_COLOR_CHOOSER (self->chooser),
+                                 orientation, colors_per_line, n_colors, colors);
+}
+
+static void
+gtk_color_chooser_window_iface_init (GtkColorChooserInterface *iface)
+{
+  iface->get_rgba = gtk_color_chooser_window_get_rgba;
+  iface->set_rgba = gtk_color_chooser_window_set_rgba;
+  iface->add_palette = gtk_color_chooser_window_add_palette;
+}
+
+GtkWidget *
+gtk_color_chooser_window_new (const char *title,
+                              GtkWindow  *parent)
+{
+  return g_object_new (GTK_TYPE_COLOR_CHOOSER_WINDOW,
+                       "title", title,
+                       "transient-for", parent,
+                       "modal", TRUE,
+                       NULL);
+}
+
+void
+gtk_color_chooser_window_save_color (GtkColorChooserWindow *self)
+{
+  GdkRGBA color;
+
+  /* This causes the color chooser widget to save the
+   * selected and custom colors to GSettings.
+   */
+  gtk_color_chooser_get_rgba (GTK_COLOR_CHOOSER (self), &color);
+  gtk_color_chooser_set_rgba (GTK_COLOR_CHOOSER (self), &color);
+}
+
+GtkWidget *
+gtk_color_chooser_window_get_ok_button (GtkColorChooserWindow *self)
+{
+  return self->ok_button;
+}
+
+GtkWidget *
+gtk_color_chooser_window_get_cancel_button (GtkColorChooserWindow *self)
+{
+  return self->cancel_button;
+}
+

gtk/gtkcolorchooserwindowprivate.h

@@ -0,0 +1,34 @@
+/* GTK - The GIMP Toolkit
+ * Copyright (C) 2012 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/>.
+ */
+
+#pragma once
+
+#include <gtk/gtkwindow.h>
+
+G_BEGIN_DECLS
+
+#define GTK_TYPE_COLOR_CHOOSER_WINDOW (gtk_color_chooser_window_get_type ())
+
+G_DECLARE_FINAL_TYPE (GtkColorChooserWindow, gtk_color_chooser_window, GTK, COLOR_CHOOSER_WINDOW, GtkWindow)
+
+GtkWidget * gtk_color_chooser_window_new      (const char *title,
+                                               GtkWindow   *parent);
+void gtk_color_chooser_window_save_color (GtkColorChooserWindow *self);
+GtkWidget *gtk_color_chooser_window_get_ok_button (GtkColorChooserWindow *self);
+GtkWidget *gtk_color_chooser_window_get_cancel_button (GtkColorChooserWindow *self);
+
+G_END_DECLS

gtk/meson.build

@@ -183,9 +183,12 @@ gtk_public_sources = files([
   'gtkcenterlayout.c',
   'gtkcheckbutton.c',
   'gtkcolorbutton.c',
+  'gtkcolorchoice.c',
+  'gtkcolorchoicebutton.c',
   'gtkcolorchooser.c',
   'gtkcolorchooserdialog.c',
   'gtkcolorchooserwidget.c',
+  'gtkcolorchooserwindow.c',
   'gtkcolorutils.c',
   'gtkcolumnview.c',
   'gtkcolumnviewcolumn.c',
@@ -439,6 +442,8 @@ gtk_public_headers = files([
   'gtkcenterlayout.h',
   'gtkcheckbutton.h',
   'gtkcolorbutton.h',
+  'gtkcolorchoice.h',
+  'gtkcolorchoicebutton.h',
   'gtkcolorchooser.h',
   'gtkcolorchooserdialog.h',
   'gtkcolorchooserwidget.h',

gtk/ui/gtkcolorchooserwindow.ui

@@ -0,0 +1,52 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<interface domain="gtk40">
+  <template class="GtkColorChooserWindow" parent="GtkWindow">
+    <property name="title" translatable="yes">Select a Color</property>
+    <property name="resizable">0</property>
+    <property name="default-widget">ok_button</property>
+    <child type="titlebar">
+      <object class="GtkHeaderBar">
+        <property name="show-title-buttons">0</property>
+        <child type="start">
+          <object class="GtkButton" id="cancel_button">
+            <property name="use-underline">1</property>
+            <property name="label" translatable="yes">_Cancel</property>
+          </object>
+        </child>
+        <child type="end">
+          <object class="GtkButton" id="ok_button">
+            <property name="label" translatable="yes">_Select</property>
+            <property name="use-underline">1</property>
+            <style>
+              <class name="suggested-action"/>
+            </style>
+          </object>
+        </child>
+      </object>
+    </child>
+    <child>
+      <object class="GtkBox">
+        <property name="orientation">1</property>
+        <property name="spacing">2</property>
+        <property name="margin-start">5</property>
+        <property name="margin-end">5</property>
+        <property name="margin-top">5</property>
+        <property name="margin-bottom">5</property>
+        <child>
+          <object class="GtkColorChooserWidget" id="chooser">
+            <property name="margin-start">5</property>
+            <property name="margin-end">5</property>
+            <property name="margin-top">5</property>
+            <property name="margin-bottom">5</property>
+            <property name="rgba">rgb(255,255,255)</property>
+            <property name="hexpand">1</property>
+            <property name="vexpand">1</property>
+            <signal name="color-activated" handler="color_activated_cb" swapped="no"/>
+            <signal name="notify::rgba" handler="propagate_notify" swapped="no"/>
+            <signal name="notify::show-editor" handler="propagate_notify" swapped="no"/>
+          </object>
+        </child>
+      </object>
+    </child>
+  </template>
+</interface>