macos: Add skeleton for color picker

gtk/gtkcolorpicker.c

@@ -22,6 +22,10 @@
 #include "gtkcolorpickershellprivate.h"
 #include "gtkcolorpickerkwinprivate.h"
 
+#ifdef __APPLE__
+#include "gtkcolorpickerquartzprivate.h"
+#endif
+
 #ifdef G_OS_WIN32
 #include "gtkcolorpickerwin32private.h"
 #endif
@@ -58,13 +62,16 @@ gtk_color_picker_new (void)
 {
   GtkColorPicker *picker = NULL;
 
-#if defined (G_OS_UNIX)
+#if defined (G_OS_UNIX) && !defined(__APPLE__)
   if (!picker)
     picker = gtk_color_picker_portal_new ();
   if (!picker)
     picker = gtk_color_picker_shell_new ();
   if (!picker)
     picker = gtk_color_picker_kwin_new ();
+#elif defined (__APPLE__)
+  if (!picker)
+    picker = gtk_color_picker_quartz_new ();
 #elif defined (G_OS_WIN32)
   if (!picker)
     picker = gtk_color_picker_win32_new ();

gtk/gtkcolorpickerquartz.c

@@ -0,0 +1,108 @@
+/* GTK - The GIMP Toolkit
+ * Copyright (C) 2024 the GTK team
+ *
+ * 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 "gtkcolorpickerquartzprivate.h"
+
+struct _GtkColorPickerQuartz
+{
+  GObject parent_instance;
+};
+
+struct _GtkColorPickerQuartzClass
+{
+  GObjectClass parent_class;
+};
+
+static GInitableIface *initable_parent_iface;
+static void gtk_color_picker_quartz_initable_iface_init (GInitableIface *iface);
+static void gtk_color_picker_quartz_iface_init (GtkColorPickerInterface *iface);
+
+G_DEFINE_TYPE_WITH_CODE (GtkColorPickerQuartz, gtk_color_picker_quartz, G_TYPE_OBJECT,
+                         G_IMPLEMENT_INTERFACE (G_TYPE_INITABLE, gtk_color_picker_quartz_initable_iface_init)
+                         G_IMPLEMENT_INTERFACE (GTK_TYPE_COLOR_PICKER, gtk_color_picker_quartz_iface_init))
+
+static gboolean
+gtk_color_picker_quartz_initable_init (GInitable     *initable,
+                                       GCancellable  *cancellable,
+                                       GError       **error)
+{
+//   GtkColorPickerQuartz *picker = GTK_COLOR_PICKER_QUARTZ (initable);
+
+  return TRUE;
+}
+
+static void
+gtk_color_picker_quartz_initable_iface_init (GInitableIface *iface)
+{
+  initable_parent_iface = g_type_interface_peek_parent (iface);
+  iface->init = gtk_color_picker_quartz_initable_init;
+}
+
+static void
+gtk_color_picker_quartz_init (GtkColorPickerQuartz *picker)
+{
+}
+
+static void
+gtk_color_picker_quartz_finalize (GObject *object)
+{
+//   GtkColorPickerQuartz *picker = GTK_COLOR_PICKER_QUARTZ (object);
+
+  G_OBJECT_CLASS (gtk_color_picker_quartz_parent_class)->finalize (object);
+}
+
+static void
+gtk_color_picker_quartz_class_init (GtkColorPickerQuartzClass *class)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (class);
+
+  object_class->finalize = gtk_color_picker_quartz_finalize;
+}
+
+GtkColorPicker *
+gtk_color_picker_quartz_new (void)
+{
+  return GTK_COLOR_PICKER (g_initable_new (GTK_TYPE_COLOR_PICKER_QUARTZ, NULL, NULL, NULL));
+}
+
+
+static void
+gtk_color_picker_quartz_pick (GtkColorPicker      *cp,
+                              GAsyncReadyCallback  callback,
+                              gpointer             user_data)
+{
+//   GtkColorPickerQuartz *picker = GTK_COLOR_PICKER_QUARTZ (cp);
+}
+
+static GdkRGBA *
+gtk_color_picker_quartz_pick_finish (GtkColorPicker  *cp,
+                                     GAsyncResult    *res,
+                                     GError         **error)
+{
+  g_return_val_if_fail (g_task_is_valid (res, cp), NULL);
+
+  return g_task_propagate_pointer (G_TASK (res), error);
+}
+
+static void
+gtk_color_picker_quartz_iface_init (GtkColorPickerInterface *iface)
+{
+  iface->pick = gtk_color_picker_quartz_pick;
+  iface->pick_finish = gtk_color_picker_quartz_pick_finish;
+}

gtk/gtkcolorpickerquartzprivate.h

@@ -0,0 +1,36 @@
+/* GTK - The GIMP Toolkit
+ * Copyright (C) 2024 the GTK team
+ *
+ * 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 <gtk/gtkcolorpickerprivate.h>
+
+G_BEGIN_DECLS
+
+
+#define GTK_TYPE_COLOR_PICKER_QUARTZ gtk_color_picker_quartz_get_type ()
+G_DECLARE_FINAL_TYPE (GtkColorPickerQuartz, gtk_color_picker_quartz, GTK, COLOR_PICKER_QUARTZ, GObject)
+
+GDK_AVAILABLE_IN_ALL
+GtkColorPicker * gtk_color_picker_quartz_new (void);
+
+G_END_DECLS

gtk/meson.build

@@ -725,6 +725,7 @@ if macos_enabled
     'gtksearchenginequartz.c',
     'gtkapplication-quartz.c',
     'gtkapplication-quartz-menu.c',
+    'gtkcolorpickerquartz.c',
     'gtkfilechoosernativequartz.c',
     'gtkimcontextquartz.c',
     'gtkquartz.c',