Add gdk_display_get_toplevel_windows

This is replacing the corresponding GdkScreen api, which
is going away. To implement this, we need to add a
get_root_window vfunc to GdkDisplay.

gdk/broadway/gdkdisplay-broadway.c

@@ -316,6 +316,14 @@ gdk_broadway_display_get_setting (GdkDisplay *display,
   return FALSE;
 }
 
+static GdkWindow *
+gdk_broadway_display_get_root_window (GdkDisplay *display)
+{
+  GdkBroadwayDisplay *broadway_display = GDK_BROADWAY_DISPLAY (display);
+
+  return gdk_broadway_screen_get_root_window (broadway_display->default_screen);
+}
+
 static void
 gdk_broadway_display_class_init (GdkBroadwayDisplayClass * class)
 {
@@ -365,5 +373,6 @@ gdk_broadway_display_class_init (GdkBroadwayDisplayClass * class)
   display_class->get_monitor = gdk_broadway_display_get_monitor;
   display_class->get_primary_monitor = gdk_broadway_display_get_primary_monitor;
   display_class->get_setting = gdk_broadway_display_get_setting;
+  display_class->get_root_window = gdk_broadway_display_get_root_window;
 }
 

gdk/gdkdisplay.c

@@ -2249,3 +2249,25 @@ gdk_display_setting_changed (GdkDisplay       *display,
 {
   g_signal_emit (display, signals[SETTING_CHANGED], 0, name);
 }
+
+GList *
+gdk_display_get_toplevel_windows (GdkDisplay *display)
+{
+  GdkWindow * root_window;
+  GList *new_list = NULL;
+  GList *tmp_list;
+
+  root_window = GDK_DISPLAY_GET_CLASS (display)->get_root_window (display);
+
+  tmp_list = root_window->children;
+  while (tmp_list)
+    {
+      GdkWindow *w = tmp_list->data;
+
+      if (w->window_type != GDK_WINDOW_FOREIGN)
+        new_list = g_list_prepend (new_list, w);
+      tmp_list = tmp_list->next;
+    }
+
+  return new_list;
+}

gdk/gdkdisplayprivate.h

@@ -224,6 +224,7 @@ struct _GdkDisplayClass
   gboolean               (*get_setting)                (GdkDisplay     *display,
                                                         const char     *name,
                                                         GValue         *value);
+  GdkWindow *            (*get_root_window)            (GdkDisplay     *display);
 
   /* Signals */
   void                   (*opened)                     (GdkDisplay     *display);
@@ -307,6 +308,8 @@ void                gdk_display_emit_opened           (GdkDisplay       *display
 void                gdk_display_setting_changed       (GdkDisplay       *display,
                                                        const char       *name);
 
+GList *             gdk_display_get_toplevel_windows  (GdkDisplay       *display);
+
 G_END_DECLS
 
 #endif  /* __GDK_DISPLAY_PRIVATE_H__ */

gdk/quartz/gdkdisplay-quartz.c

@@ -248,6 +248,12 @@ gdk_quartz_display_finalize (GObject *object)
   G_OBJECT_CLASS (gdk_quartz_display_parent_class)->finalize (object);
 }
 
+static GdkWindow *
+gdk_quartz_display_get_root_window (GdkDisplay *display)
+{
+  return _gdk_root;
+}
+`
 static void
 gdk_quartz_display_class_init (GdkQuartzDisplayClass *class)
 {
@@ -297,6 +303,7 @@ gdk_quartz_display_class_init (GdkQuartzDisplayClass *class)
   display_class->get_monitor = gdk_quartz_display_get_monitor;
   display_class->get_primary_monitor = gdk_quartz_display_get_primary_monitor;
   display_class->get_setting = gdk_quartz_display_get_setting;
+  display_class->get_root_window = gdk_quartz_display_get_root_window;
 
   ProcessSerialNumber psn = { 0, kCurrentProcess };
 

gdk/wayland/gdkdisplay-wayland.c

@@ -989,6 +989,12 @@ gdk_wayland_display_get_setting (GdkDisplay  *display,
   return gdk_wayland_screen_get_setting (GDK_WAYLAND_DISPLAY (display)->screen, name, value);
 }
 
+static GdkWindow *
+gdk_wayland_display_get_root_window (GdkDisplay *display)
+{
+  return gdk_wayland_screen_get_root_window (GDK_WAYLAND_DISPLAY (display)->screen);
+}
+
 static void
 gdk_wayland_display_class_init (GdkWaylandDisplayClass *class)
 {
@@ -1048,6 +1054,7 @@ gdk_wayland_display_class_init (GdkWaylandDisplayClass *class)
   display_class->get_monitor = gdk_wayland_display_get_monitor;
   display_class->get_monitor_at_window = gdk_wayland_display_get_monitor_at_window;
   display_class->get_setting = gdk_wayland_display_get_setting;
+  display_class->get_root_window = gdk_wayland_display_get_root_window;
 }
 
 static void

gdk/wayland/gdkprivate-wayland.h

@@ -213,6 +213,7 @@ GdkWindow *_gdk_wayland_screen_create_root_window (GdkScreen *screen,
 gboolean gdk_wayland_screen_get_setting (GdkScreen   *screen,
                                          const gchar *name,
                                          GValue      *value);
+GdkWindow *gdk_wayland_screen_get_root_window (GdkScreen *screen);
 
 GdkScreen *_gdk_wayland_screen_new (GdkDisplay *display);
 void _gdk_wayland_screen_add_output (GdkScreen        *screen,

gdk/wayland/gdkscreen-wayland.c

@@ -105,7 +105,7 @@ gdk_wayland_screen_get_display (GdkScreen *screen)
   return GDK_WAYLAND_SCREEN (screen)->display;
 }
 
-static GdkWindow *
+GdkWindow *
 gdk_wayland_screen_get_root_window (GdkScreen *screen)
 {
   return GDK_WAYLAND_SCREEN (screen)->root_window;

gdk/win32/gdkdisplay-win32.c

@@ -1238,6 +1238,12 @@ gdk_win32_display_get_setting (GdkDisplay  *display,
                                         value);
 }
 
+static GdkWindow *
+gdk_win32_display_get_root_window (GdkDisplay *display)
+{
+  return gdk_win32_screen_get_root_window (GDK_WIN32_DISPLAY (display)->screen);
+}
+
 static void
 gdk_win32_display_class_init (GdkWin32DisplayClass *klass)
 {
@@ -1300,6 +1306,7 @@ gdk_win32_display_class_init (GdkWin32DisplayClass *klass)
 #endif
 
   display_class->get_setting = gdk_win32_display_get_setting;
+  display_class->get_root_window = gdk_win32_display_get_root_window;
 
   _gdk_win32_windowing_init ();
 }

gdk/win32/gdkprivate-win32.h

@@ -504,6 +504,7 @@ void _gdk_win32_window_delete_property (GdkWindow *window, GdkAtom    property);
 /* Stray GdkWin32Screen members */
 gboolean _gdk_win32_screen_get_setting (GdkScreen   *screen, const gchar *name, GValue *value);
 void _gdk_win32_screen_on_displaychange_event (GdkWin32Screen *screen);
+GdkWindow *gdk_win32_screen_get_root_window (GdkScreen *screen);
 
 /* Distributed display manager implementation */
 GdkDisplay *_gdk_win32_display_open (const gchar *display_name);

gdk/win32/gdkscreen-win32.c

@@ -183,7 +183,7 @@ gdk_win32_screen_get_display (GdkScreen *screen)
   return _gdk_display;
 }
 
-static GdkWindow *
+GdkWindow *
 gdk_win32_screen_get_root_window (GdkScreen *screen)
 {
   return GDK_WIN32_SCREEN (screen)->root_window;

gdk/x11/gdkdisplay-x11.c

@@ -3135,6 +3135,12 @@ gdk_x11_display_get_setting (GdkDisplay  *display,
   return gdk_x11_screen_get_setting (GDK_X11_DISPLAY (display)->screen, name, value);
 }
 
+static GdkWindow *
+gdk_x11_display_get_root_window (GdkDisplay *display)
+{
+  return gdk_x11_screen_get_root_window (GDK_X11_DISPLAY (display)->screen);
+}
+
 static void
 gdk_x11_display_class_init (GdkX11DisplayClass * class)
 {
@@ -3196,6 +3202,7 @@ gdk_x11_display_class_init (GdkX11DisplayClass * class)
   display_class->get_monitor = gdk_x11_display_get_monitor;
   display_class->get_primary_monitor = gdk_x11_display_get_primary_monitor;
   display_class->get_setting = gdk_x11_display_get_setting;
+  display_class->get_root_window = gdk_x11_display_get_root_window;
 
   _gdk_x11_windowing_init ();
 }

gdk/x11/gdkscreen-x11.c

@@ -79,7 +79,7 @@ gdk_x11_screen_get_display (GdkScreen *screen)
   return GDK_X11_SCREEN (screen)->display;
 }
 
-static GdkWindow *
+GdkWindow *
 gdk_x11_screen_get_root_window (GdkScreen *screen)
 {
   return GDK_X11_SCREEN (screen)->root_window;

gdk/x11/gdkscreen-x11.h

@@ -117,6 +117,7 @@ void gdk_x11_screen_get_work_area           (GdkScreen    *screen,
 gboolean gdk_x11_screen_get_setting         (GdkScreen    *screen,
                                              const char   *name,
                                              GValue       *value);
+GdkWindow *gdk_x11_screen_get_root_window   (GdkScreen *screen);
 
 G_END_DECLS