wayland: Update focus window during DnD motion

But don't emit crossing events, since the DnD grab is in effect.

https://bugzilla.gnome.org/show_bug.cgi?id=728030

configure.ac

@@ -79,7 +79,7 @@ MUTTER_PC_MODULES="
    $CLUTTER_PACKAGE >= 1.19.5
    clutter-egl-1.0
    cogl-1.0 >= 1.17.1
-   gbm
+   gbm >= 10.3
    upower-glib >= 0.99.0
    gnome-desktop-3.0
    xcomposite >= 0.2

src/Makefile-tests.am

@@ -7,6 +7,7 @@ stackingdir = $(pkgdatadir)/tests/stacking
 dist_stacking_DATA =				\
 	tests/stacking/basic-x11.metatest	\
 	tests/stacking/basic-wayland.metatest	\
+	tests/stacking/minimized.metatest   	\
 	tests/stacking/mixed-windows.metatest   \
 	tests/stacking/override-redirect.metatest
 

src/backends/meta-cursor-renderer.c

@@ -35,13 +35,21 @@
 
 #include "meta-stage.h"
 
+typedef struct
+{
+  CoglTexture *texture;
+  MetaRectangle current_rect;
+  int current_x, current_y;
+} MetaCursorLayer;
+
 struct _MetaCursorRendererPrivate
 {
-  int current_x, current_y;
+  MetaCursorLayer core_layer;
-  MetaRectangle current_rect;
+  MetaCursorLayer dnd_layer;
 
   MetaCursorReference *displayed_cursor;
-  gboolean handled_by_backend;
+  int dnd_surface_offset_x, dnd_surface_offset_y;
+  gboolean cursor_handled_by_backend;
 };
 typedef struct _MetaCursorRendererPrivate MetaCursorRendererPrivate;
 
@@ -59,12 +67,19 @@ queue_redraw (MetaCursorRenderer *renderer)
   if (!stage)
     return;
 
-  if (priv->displayed_cursor && !priv->handled_by_backend)
+  /* Pointer cursor */
-    texture = meta_cursor_reference_get_cogl_texture (priv->displayed_cursor, NULL, NULL);
+  if (!priv->cursor_handled_by_backend)
+    texture = priv->core_layer.texture;
   else
     texture = NULL;
 
-  meta_stage_set_cursor (META_STAGE (stage), texture, &priv->current_rect);
+  meta_stage_set_cursor (META_STAGE (stage), texture,
+                         &priv->core_layer.current_rect);
+
+  /* DnD surface */
+  meta_stage_set_dnd_surface (META_STAGE (stage),
+                              priv->dnd_layer.texture,
+                              &priv->dnd_layer.current_rect);
 }
 
 static gboolean
@@ -85,46 +100,76 @@ meta_cursor_renderer_init (MetaCursorRenderer *renderer)
 }
 
 static void
-update_cursor (MetaCursorRenderer *renderer)
+update_layer (MetaCursorRenderer *renderer,
+              MetaCursorLayer    *layer,
+              CoglTexture        *texture,
+              int                 offset_x,
+              int                 offset_y)
 {
-  MetaCursorRendererPrivate *priv = meta_cursor_renderer_get_instance_private (renderer);
+  layer->texture = texture;
-  gboolean handled_by_backend;
-  gboolean should_redraw = FALSE;
 
-  if (priv->displayed_cursor)
+  if (layer->texture)
     {
-      CoglTexture *texture;
+      layer->current_rect.x = layer->current_x + offset_x;
-      int hot_x, hot_y;
+      layer->current_rect.y = layer->current_y + offset_y;
-
+      layer->current_rect.width = cogl_texture_get_width (layer->texture);
-      texture = meta_cursor_reference_get_cogl_texture (priv->displayed_cursor, &hot_x, &hot_y);
+      layer->current_rect.height = cogl_texture_get_height (layer->texture);
-
-      priv->current_rect.x = priv->current_x - hot_x;
-      priv->current_rect.y = priv->current_y - hot_y;
-      priv->current_rect.width = cogl_texture_get_width (COGL_TEXTURE (texture));
-      priv->current_rect.height = cogl_texture_get_height (COGL_TEXTURE (texture));
     }
   else
     {
-      priv->current_rect.x = 0;
+      layer->current_rect.x = 0;
-      priv->current_rect.y = 0;
+      layer->current_rect.y = 0;
-      priv->current_rect.width = 0;
+      layer->current_rect.width = 0;
-      priv->current_rect.height = 0;
+      layer->current_rect.height = 0;
     }
+}
+
+static void
+emit_update_cursor (MetaCursorRenderer *renderer,
+                    gboolean            force)
+{
+  MetaCursorRendererPrivate *priv = meta_cursor_renderer_get_instance_private (renderer);
+  gboolean handled_by_backend, should_redraw = FALSE;
 
   handled_by_backend = META_CURSOR_RENDERER_GET_CLASS (renderer)->update_cursor (renderer);
-  if (handled_by_backend != priv->handled_by_backend)
+
+  if (handled_by_backend != priv->cursor_handled_by_backend)
     {
-      priv->handled_by_backend = handled_by_backend;
+      priv->cursor_handled_by_backend = handled_by_backend;
       should_redraw = TRUE;
     }
 
-  if (!handled_by_backend)
+  if (force || !handled_by_backend || priv->dnd_layer.texture)
     should_redraw = TRUE;
 
   if (should_redraw)
     queue_redraw (renderer);
 }
 
+static void
+update_cursor (MetaCursorRenderer *renderer)
+{
+  MetaCursorRendererPrivate *priv = meta_cursor_renderer_get_instance_private (renderer);
+  CoglTexture *texture;
+  int hot_x, hot_y;
+
+  /* Cursor layer */
+  if (priv->displayed_cursor)
+    {
+      texture = meta_cursor_reference_get_cogl_texture (priv->displayed_cursor,
+                                                        &hot_x, &hot_y);
+    }
+  else
+    {
+      texture = NULL;
+      hot_x = 0;
+      hot_y = 0;
+    }
+
+  update_layer (renderer, &priv->core_layer, texture, -hot_x, -hot_y);
+  emit_update_cursor (renderer, FALSE);
+}
+
 MetaCursorRenderer *
 meta_cursor_renderer_new (void)
 {
@@ -144,6 +189,23 @@ meta_cursor_renderer_set_cursor (MetaCursorRenderer  *renderer,
   update_cursor (renderer);
 }
 
+void
+meta_cursor_renderer_set_dnd_surface (MetaCursorRenderer *renderer,
+                                      CoglTexture        *texture,
+                                      int                 offset_x,
+                                      int                 offset_y)
+{
+  MetaCursorRendererPrivate *priv = meta_cursor_renderer_get_instance_private (renderer);
+
+  g_assert (meta_is_wayland_compositor ());
+
+  priv->dnd_surface_offset_x = offset_x;
+  priv->dnd_surface_offset_y = offset_y;
+
+  update_layer (renderer, &priv->dnd_layer, texture, offset_x, offset_y);
+  emit_update_cursor (renderer, TRUE);
+}
+
 void
 meta_cursor_renderer_set_position (MetaCursorRenderer *renderer,
                                    int x, int y)
@@ -152,12 +214,46 @@ meta_cursor_renderer_set_position (MetaCursorRenderer *renderer,
 
   g_assert (meta_is_wayland_compositor ());
 
-  priv->current_x = x;
+  priv->core_layer.current_x = x;
-  priv->current_y = y;
+  priv->core_layer.current_y = y;
 
   update_cursor (renderer);
 }
 
+void
+meta_cursor_renderer_set_dnd_surface_position (MetaCursorRenderer *renderer,
+                                               int                 x,
+                                               int                 y)
+{
+  MetaCursorRendererPrivate *priv = meta_cursor_renderer_get_instance_private (renderer);
+
+  g_assert (meta_is_wayland_compositor ());
+
+  priv->dnd_layer.current_x = x;
+  priv->dnd_layer.current_y = y;
+
+  update_layer (renderer, &priv->dnd_layer, priv->dnd_layer.texture,
+                priv->dnd_surface_offset_x, priv->dnd_surface_offset_y);
+  emit_update_cursor (renderer, FALSE);
+}
+
+void
+meta_cursor_renderer_dnd_failed (MetaCursorRenderer *renderer,
+                                 int                 dest_x,
+                                 int                 dest_y)
+{
+  MetaCursorRendererPrivate *priv = meta_cursor_renderer_get_instance_private (renderer);
+  MetaBackend *backend = meta_get_backend ();
+  ClutterActor *stage = meta_backend_get_stage (backend);
+
+  g_assert (meta_is_wayland_compositor ());
+
+  if (priv->dnd_layer.texture)
+    meta_stage_dnd_failed (META_STAGE (stage),
+                           dest_x + priv->dnd_surface_offset_x,
+                           dest_y + priv->dnd_surface_offset_y);
+}
+
 MetaCursorReference *
 meta_cursor_renderer_get_cursor (MetaCursorRenderer *renderer)
 {
@@ -171,5 +267,5 @@ meta_cursor_renderer_get_rect (MetaCursorRenderer *renderer)
 {
   MetaCursorRendererPrivate *priv = meta_cursor_renderer_get_instance_private (renderer);
 
-  return &priv->current_rect;
+  return &priv->core_layer.current_rect;
 }

src/backends/meta-cursor-renderer.h

@@ -67,4 +67,14 @@ void meta_cursor_renderer_set_position (MetaCursorRenderer *renderer,
 MetaCursorReference * meta_cursor_renderer_get_cursor (MetaCursorRenderer *renderer);
 const MetaRectangle * meta_cursor_renderer_get_rect (MetaCursorRenderer *renderer);
 
+void meta_cursor_renderer_set_dnd_surface (MetaCursorRenderer *renderer,
+                                           CoglTexture        *texture,
+                                           int                 offset_x,
+                                           int                 offset_y);
+void meta_cursor_renderer_set_dnd_surface_position (MetaCursorRenderer *renderer,
+                                                    int x, int y);
+
+void meta_cursor_renderer_dnd_failed (MetaCursorRenderer *renderer,
+                                      int dest_x, int dest_y);
+
 #endif /* META_CURSOR_RENDERER_H */

src/backends/meta-cursor-tracker-private.h

@@ -62,10 +62,20 @@ void     meta_cursor_tracker_set_window_cursor   (MetaCursorTracker   *tracker,
 void     meta_cursor_tracker_unset_window_cursor (MetaCursorTracker   *tracker);
 void     meta_cursor_tracker_set_root_cursor     (MetaCursorTracker   *tracker,
                                                   MetaCursorReference *cursor);
+void     meta_cursor_tracker_set_dnd_surface     (MetaCursorTracker   *tracker,
+                                                  CoglTexture         *texture,
+                                                  int                  offset_x,
+                                                  int                  offset_y);
 
 void     meta_cursor_tracker_update_position (MetaCursorTracker *tracker,
 					      int                new_x,
 					      int                new_y);
+void     meta_cursor_tracker_update_dnd_surface_position (MetaCursorTracker *tracker,
+                                                          int                new_x,
+                                                          int                new_y);
+void     meta_cursor_tracker_dnd_failed (MetaCursorTracker *tracker,
+                                         int                dest_x,
+                                         int                dest_y);
 
 MetaCursorReference * meta_cursor_tracker_get_displayed_cursor (MetaCursorTracker *tracker);
 

src/backends/meta-cursor-tracker.c

@@ -358,6 +358,28 @@ meta_cursor_tracker_set_root_cursor (MetaCursorTracker   *tracker,
   sync_cursor (tracker);
 }
 
+void
+meta_cursor_tracker_set_dnd_surface (MetaCursorTracker   *tracker,
+                                     CoglTexture         *texture,
+                                     int                  offset_x,
+                                     int                  offset_y)
+{
+  g_assert (meta_is_wayland_compositor ());
+
+  meta_cursor_renderer_set_dnd_surface (tracker->renderer, texture,
+                                        offset_x, offset_y);
+}
+
+void
+meta_cursor_tracker_dnd_failed (MetaCursorTracker *tracker,
+                                int                dest_x,
+                                int                dest_y)
+{
+  g_assert (meta_is_wayland_compositor ());
+
+  meta_cursor_renderer_dnd_failed (tracker->renderer, dest_x, dest_y);
+}
+
 void
 meta_cursor_tracker_update_position (MetaCursorTracker *tracker,
                                      int                new_x,
@@ -368,6 +390,17 @@ meta_cursor_tracker_update_position (MetaCursorTracker *tracker,
   meta_cursor_renderer_set_position (tracker->renderer, new_x, new_y);
 }
 
+void
+meta_cursor_tracker_update_dnd_surface_position (MetaCursorTracker *tracker,
+                                                 int                new_x,
+                                                 int                new_y)
+{
+  g_assert (meta_is_wayland_compositor ());
+
+  meta_cursor_renderer_set_dnd_surface_position (tracker->renderer,
+                                                 new_x, new_y);
+}
+
 static void
 get_pointer_position_gdk (int         *x,
                           int         *y,

src/backends/meta-cursor.c

@@ -139,35 +139,56 @@ load_cursor_on_client (MetaCursor cursor)
                                   meta_prefs_get_cursor_size ());
 }
 
+static void
+get_hardware_cursor_size (uint64_t *cursor_width, uint64_t *cursor_height)
+{
+#ifdef HAVE_NATIVE_BACKEND
+  MetaBackend *meta_backend = meta_get_backend ();
+  MetaCursorRenderer *renderer = meta_backend_get_cursor_renderer (meta_backend);
+
+  if (META_IS_CURSOR_RENDERER_NATIVE (renderer))
+    {
+      meta_cursor_renderer_native_get_cursor_size (META_CURSOR_RENDERER_NATIVE (renderer), cursor_width, cursor_height);
+      return;
+    }
+#endif
+
+  g_assert_not_reached ();
+}
+
 static void
 meta_cursor_image_load_gbm_buffer (struct gbm_device *gbm,
                                    MetaCursorImage   *image,
                                    uint8_t           *pixels,
-                                   int                width,
+                                   uint               width,
-                                   int                height,
+                                   uint               height,
                                    int                rowstride,
                                    uint32_t           gbm_format)
 {
-  if (width > 64 || height > 64)
+  uint64_t cursor_width, cursor_height;
+  get_hardware_cursor_size (&cursor_width, &cursor_height);
+
+  if (width > cursor_width || height > cursor_height)
     {
-      meta_warning ("Invalid theme cursor size (must be at most 64x64)\n");
+      meta_warning ("Invalid theme cursor size (must be at most %ux%u)\n",
+                    (unsigned int)cursor_width, (unsigned int)cursor_height);
       return;
     }
 
   if (gbm_device_is_format_supported (gbm, gbm_format,
-                                      GBM_BO_USE_CURSOR_64X64 | GBM_BO_USE_WRITE))
+                                      GBM_BO_USE_CURSOR | GBM_BO_USE_WRITE))
     {
-      uint8_t buf[4 * 64 * 64];
+      uint8_t buf[4 * cursor_width * cursor_height];
-      int i;
+      uint i;
 
-      image->bo = gbm_bo_create (gbm, 64, 64,
+      image->bo = gbm_bo_create (gbm, cursor_width, cursor_height,
-                                 gbm_format, GBM_BO_USE_CURSOR_64X64 | GBM_BO_USE_WRITE);
+                                 gbm_format, GBM_BO_USE_CURSOR | GBM_BO_USE_WRITE);
 
       memset (buf, 0, sizeof(buf));
       for (i = 0; i < height; i++)
-        memcpy (buf + i * 4 * 64, pixels + i * rowstride, width * 4);
+        memcpy (buf + i * 4 * cursor_width, pixels + i * rowstride, width * 4);
 
-      gbm_bo_write (image->bo, buf, 64 * 64 * 4);
+      gbm_bo_write (image->bo, buf, cursor_width * cursor_height * 4);
     }
   else
     meta_warning ("HW cursor for format %d not supported\n", gbm_format);
@@ -191,7 +212,7 @@ static void
 meta_cursor_image_load_from_xcursor_image (MetaCursorImage   *image,
                                            XcursorImage      *xc_image)
 {
-  int width, height, rowstride;
+  uint width, height, rowstride;
   CoglPixelFormat cogl_format;
   uint32_t gbm_format;
   ClutterBackend *clutter_backend;
@@ -262,7 +283,8 @@ meta_cursor_image_load_from_buffer (MetaCursorImage    *image,
   CoglContext *cogl_context;
   struct wl_shm_buffer *shm_buffer;
   uint32_t gbm_format;
-  int width, height;
+  uint64_t cursor_width, cursor_height;
+  uint width, height;
 
   image->hot_x = hot_x;
   image->hot_y = hot_y;
@@ -313,22 +335,23 @@ meta_cursor_image_load_from_buffer (MetaCursorImage    *image,
     }
   else
     {
-      /* HW cursors must be 64x64, but 64x64 is huge, and no cursor theme actually uses
-         that, so themed cursors must be padded with transparent pixels to fill the
-         overlay. This is trivial if we have CPU access to the data, but it's not
-         possible if the buffer is in GPU memory (and possibly tiled too), so if we
-         don't get the right size, we fallback to GL.
-      */
-      if (width != 64 || height != 64)
-        {
-          meta_warning ("Invalid cursor size (must be 64x64), falling back to software (GL) cursors\n");
-          return;
-        }
-
       if (gbm)
         {
-          image->bo = gbm_bo_import (gbm, GBM_BO_IMPORT_WL_BUFFER,
+          /* HW cursors have a predefined size (at least 64x64), which usually is bigger than cursor theme
-                                     buffer, GBM_BO_USE_CURSOR_64X64);
+             size, so themed cursors must be padded with transparent pixels to fill the
+             overlay. This is trivial if we have CPU access to the data, but it's not
+             possible if the buffer is in GPU memory (and possibly tiled too), so if we
+             don't get the right size, we fallback to GL.
+          */
+          get_hardware_cursor_size (&cursor_width, &cursor_height);
+
+          if (width != cursor_width || height != cursor_height)
+            {
+              meta_warning ("Invalid cursor size (must be 64x64), falling back to software (GL) cursors\n");
+              return;
+            }
+
+          image->bo = gbm_bo_import (gbm, GBM_BO_IMPORT_WL_BUFFER, buffer, GBM_BO_USE_CURSOR);
           if (!image->bo)
             meta_warning ("Importing HW cursor from wl_buffer failed\n");
         }

src/backends/meta-monitor-manager.c

@@ -44,12 +44,6 @@ enum {
   SIGNALS_LAST
 };
 
-enum {
-  PROP_0,
-  PROP_POWER_SAVE_MODE,
-  PROP_LAST
-};
-
 static int signals[SIGNALS_LAST];
 
 static void meta_monitor_manager_display_config_init (MetaDBusDisplayConfigIface *iface);
@@ -167,11 +161,39 @@ make_logical_config (MetaMonitorManager *manager)
   manager->monitor_infos = (void*)g_array_free (monitor_infos, FALSE);
 }
 
+static void
+power_save_mode_changed (MetaMonitorManager *manager,
+                         GParamSpec         *pspec,
+                         gpointer            user_data)
+{
+  MetaMonitorManagerClass *klass;
+  int mode = meta_dbus_display_config_get_power_save_mode (META_DBUS_DISPLAY_CONFIG (manager));
+
+  if (mode == META_POWER_SAVE_UNSUPPORTED)
+    return;
+
+  /* If DPMS is unsupported, force the property back. */
+  if (manager->power_save_mode == META_POWER_SAVE_UNSUPPORTED)
+    {
+      meta_dbus_display_config_set_power_save_mode (META_DBUS_DISPLAY_CONFIG (manager), META_POWER_SAVE_UNSUPPORTED);
+      return;
+    }
+
+  klass = META_MONITOR_MANAGER_GET_CLASS (manager);
+  if (klass->set_power_save_mode)
+    klass->set_power_save_mode (manager, mode);
+
+  manager->power_save_mode = mode;
+}
+
 static void
 meta_monitor_manager_constructed (GObject *object)
 {
   MetaMonitorManager *manager = META_MONITOR_MANAGER (object);
 
+  g_signal_connect_object (manager, "notify::power-save-mode",
+                           G_CALLBACK (power_save_mode_changed), manager, 0);
+
   manager->in_init = TRUE;
 
   manager->config = meta_monitor_config_new ();
@@ -214,23 +236,6 @@ meta_monitor_manager_constructed (GObject *object)
   manager->in_init = FALSE;
 }
 
-static void
-meta_monitor_manager_set_power_save_mode (MetaMonitorManager *manager,
-                                          MetaPowerSave       mode)
-{
-  MetaMonitorManagerClass *klass;
-
-  if (manager->power_save_mode == META_POWER_SAVE_UNSUPPORTED ||
-      mode == META_POWER_SAVE_UNSUPPORTED)
-    return;
-
-  klass = META_MONITOR_MANAGER_GET_CLASS (manager);
-  if (klass->set_power_save_mode)
-    klass->set_power_save_mode (manager, mode);
-
-  manager->power_save_mode = mode;
-}
-
 void
 meta_monitor_manager_free_output_array (MetaOutput *old_outputs,
                                         int         n_old_outputs)
@@ -298,44 +303,6 @@ meta_monitor_manager_dispose (GObject *object)
   G_OBJECT_CLASS (meta_monitor_manager_parent_class)->dispose (object);
 }
 
-static void
-meta_monitor_manager_set_property (GObject      *object,
-                                   guint         prop_id,
-                                   const GValue *value,
-                                   GParamSpec   *pspec)
-{
-  MetaMonitorManager *self = META_MONITOR_MANAGER (object);
-
-  switch (prop_id)
-    {
-    case PROP_POWER_SAVE_MODE:
-      meta_monitor_manager_set_power_save_mode (self, g_value_get_int (value));
-      break;
-    default:
-      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
-      break;
-    }
-}
-
-static void
-meta_monitor_manager_get_property (GObject      *object,
-                                   guint         prop_id,
-                                   GValue       *value,
-                                   GParamSpec   *pspec)
-{
-  MetaMonitorManager *self = META_MONITOR_MANAGER (object);
-
-  switch (prop_id)
-    {
-    case PROP_POWER_SAVE_MODE:
-      g_value_set_int (value, self->power_save_mode);
-      break;
-    default:
-      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
-      break;
-    }
-}
-
 static GBytes *
 meta_monitor_manager_real_read_edid (MetaMonitorManager *manager,
                                      MetaOutput         *output)
@@ -356,8 +323,6 @@ meta_monitor_manager_class_init (MetaMonitorManagerClass *klass)
   GObjectClass *object_class = G_OBJECT_CLASS (klass);
 
   object_class->constructed = meta_monitor_manager_constructed;
-  object_class->get_property = meta_monitor_manager_get_property;
-  object_class->set_property = meta_monitor_manager_set_property;
   object_class->dispose = meta_monitor_manager_dispose;
   object_class->finalize = meta_monitor_manager_finalize;
 
@@ -371,8 +336,6 @@ meta_monitor_manager_class_init (MetaMonitorManagerClass *klass)
 		  0,
                   NULL, NULL, NULL,
 		  G_TYPE_NONE, 0);
-
-  g_object_class_override_property (object_class, PROP_POWER_SAVE_MODE, "power-save-mode");
 }
 
 static const double known_diagonals[] = {

src/backends/meta-stage.c

@@ -28,6 +28,8 @@
 #include <meta/meta-backend.h>
 #include <meta/util.h>
 
+#define DRAG_FAILED_MSECS 500
+
 typedef struct {
   gboolean enabled;
 
@@ -39,8 +41,20 @@ typedef struct {
   gboolean previous_is_valid;
 } MetaOverlay;
 
+typedef struct {
+  MetaStage *stage;
+  MetaOverlay overlay;
+  ClutterTimeline *timeline;
+  int orig_x;
+  int orig_y;
+  int dest_x;
+  int dest_y;
+} MetaDragFailedAnimation;
+
 struct _MetaStagePrivate {
+  MetaOverlay dnd_overlay;
   MetaOverlay cursor_overlay;
+  GList *drag_failed_animations;
 };
 typedef struct _MetaStagePrivate MetaStagePrivate;
 
@@ -54,6 +68,15 @@ meta_overlay_init (MetaOverlay *overlay)
   overlay->pipeline = cogl_pipeline_new (ctx);
 }
 
+static void
+meta_overlay_copy (MetaOverlay *src,
+                   MetaOverlay *dst)
+{
+  *dst = *src;
+  dst->pipeline = cogl_pipeline_copy (src->pipeline);
+  dst->texture = src->texture;
+}
+
 static void
 meta_overlay_free (MetaOverlay *overlay)
 {
@@ -112,6 +135,7 @@ meta_stage_finalize (GObject *object)
   MetaStage *stage = META_STAGE (object);
   MetaStagePrivate *priv = meta_stage_get_instance_private (stage);
 
+  meta_overlay_free (&priv->dnd_overlay);
   meta_overlay_free (&priv->cursor_overlay);
 }
 
@@ -120,9 +144,18 @@ meta_stage_paint (ClutterActor *actor)
 {
   MetaStage *stage = META_STAGE (actor);
   MetaStagePrivate *priv = meta_stage_get_instance_private (stage);
+  MetaDragFailedAnimation *animation;
+  GList *l;
 
   CLUTTER_ACTOR_CLASS (meta_stage_parent_class)->paint (actor);
 
+  for (l = priv->drag_failed_animations; l; l = l->next)
+    {
+      animation = l->data;
+      meta_overlay_paint (&animation->overlay);
+    }
+
+  meta_overlay_paint (&priv->dnd_overlay);
   meta_overlay_paint (&priv->cursor_overlay);
 }
 
@@ -142,6 +175,7 @@ meta_stage_init (MetaStage *stage)
 {
   MetaStagePrivate *priv = meta_stage_get_instance_private (stage);
 
+  meta_overlay_init (&priv->dnd_overlay);
   meta_overlay_init (&priv->cursor_overlay);
 
   clutter_stage_set_user_resizable (CLUTTER_STAGE (stage), FALSE);
@@ -183,6 +217,19 @@ queue_redraw_for_overlay (MetaStage   *stage,
     }
 }
 
+void
+meta_stage_set_dnd_surface (MetaStage     *stage,
+                            CoglTexture   *texture,
+                            MetaRectangle *rect)
+{
+  MetaStagePrivate *priv = meta_stage_get_instance_private (stage);
+
+  g_assert (meta_is_wayland_compositor ());
+
+  meta_overlay_set (&priv->dnd_overlay, texture, rect);
+  queue_redraw_for_overlay (stage, &priv->dnd_overlay);
+}
+
 void
 meta_stage_set_cursor (MetaStage     *stage,
                        CoglTexture   *texture,
@@ -195,3 +242,84 @@ meta_stage_set_cursor (MetaStage     *stage,
   meta_overlay_set (&priv->cursor_overlay, texture, rect);
   queue_redraw_for_overlay (stage, &priv->cursor_overlay);
 }
+
+static void
+drag_failed_animation_frame_cb (ClutterTimeline *timeline,
+                                guint            pos,
+                                gpointer         user_data)
+{
+  MetaDragFailedAnimation *data = user_data;
+  gdouble progress = clutter_timeline_get_progress (timeline);
+  CoglColor color;
+
+  cogl_color_init_from_4f (&color, 0, 0, 0, 1 - progress);
+  cogl_pipeline_set_layer_combine_constant (data->overlay.pipeline, 0, &color);
+
+  data->overlay.current_rect.x = data->orig_x + ((data->dest_x - data->orig_x) * progress);
+  data->overlay.current_rect.y = data->orig_y + ((data->dest_y - data->orig_y) * progress);
+  queue_redraw_for_overlay (data->stage, &data->overlay);
+}
+
+static void
+meta_drag_failed_animation_free (MetaDragFailedAnimation *data)
+{
+  MetaStage *stage = data->stage;
+  MetaStagePrivate *priv = meta_stage_get_instance_private (stage);
+
+  priv->drag_failed_animations =
+    g_list_remove (priv->drag_failed_animations, data);
+
+  g_object_unref (data->timeline);
+  meta_overlay_free (&data->overlay);
+  g_slice_free (MetaDragFailedAnimation, data);
+}
+
+static MetaDragFailedAnimation *
+meta_drag_failed_animation_new (MetaStage *stage,
+                                int        dest_x,
+                                int        dest_y)
+{
+  MetaStagePrivate *priv = meta_stage_get_instance_private (stage);
+  MetaDragFailedAnimation *data;
+
+  data = g_slice_new0 (MetaDragFailedAnimation);
+  data->stage = stage;
+  data->orig_x = priv->dnd_overlay.current_rect.x;
+  data->orig_y = priv->dnd_overlay.current_rect.y;
+  data->dest_x = dest_x;
+  data->dest_y = dest_y;
+
+  meta_overlay_copy (&priv->dnd_overlay, &data->overlay);
+
+  data->timeline = clutter_timeline_new (DRAG_FAILED_MSECS);
+  clutter_timeline_set_progress_mode (data->timeline, CLUTTER_EASE_OUT_CUBIC);
+  g_signal_connect (data->timeline, "new-frame",
+                    G_CALLBACK (drag_failed_animation_frame_cb), data);
+  g_signal_connect_swapped (data->timeline, "completed",
+                            G_CALLBACK (meta_drag_failed_animation_free), data);
+
+  priv->drag_failed_animations =
+    g_list_prepend (priv->drag_failed_animations, data);
+
+  cogl_pipeline_set_layer_combine (data->overlay.pipeline, 0,
+                                   "RGBA = MODULATE (TEXTURE, CONSTANT[A])",
+                                   NULL);
+  return data;
+}
+
+void
+meta_stage_dnd_failed (MetaStage *stage,
+                       int        dest_x,
+                       int        dest_y)
+{
+  MetaStagePrivate *priv = meta_stage_get_instance_private (stage);
+  MetaDragFailedAnimation *data;
+
+  g_assert (meta_is_wayland_compositor ());
+
+  if (!priv->dnd_overlay.enabled)
+    return;
+
+  data = meta_drag_failed_animation_new (stage, dest_x, dest_y);
+  clutter_timeline_start (data->timeline);
+}

src/backends/meta-stage.h

@@ -51,9 +51,18 @@ GType             meta_stage_get_type                (void) G_GNUC_CONST;
 
 ClutterActor     *meta_stage_new                     (void);
 
+void meta_stage_set_dnd_surface (MetaStage     *stage,
+                                 CoglTexture   *texture,
+                                 MetaRectangle *rect);
+
 void meta_stage_set_cursor (MetaStage     *stage,
                             CoglTexture   *texture,
                             MetaRectangle *rect);
+
+void meta_stage_dnd_failed (MetaStage *stage,
+                            int        dest_x,
+                            int        dest_y);
+
 G_END_DECLS
 
 #endif /* META_STAGE_H */

src/backends/native/meta-cursor-renderer-native.c

@@ -27,16 +27,27 @@
 #include "meta-cursor-renderer-native.h"
 
 #include <gbm.h>
+#include <xf86drm.h>
 
 #include "meta-cursor-private.h"
 #include "meta-monitor-manager.h"
 
+#ifndef DRM_CAP_CURSOR_WIDTH
+#define DRM_CAP_CURSOR_WIDTH 0x8
+#endif
+#ifndef DRM_CAP_CURSOR_HEIGHT
+#define DRM_CAP_CURSOR_HEIGHT 0x9
+#endif
+
 struct _MetaCursorRendererNativePrivate
 {
   gboolean has_hw_cursor;
 
   int drm_fd;
   struct gbm_device *gbm;
+
+  uint64_t cursor_width;
+  uint64_t cursor_height;
 };
 typedef struct _MetaCursorRendererNativePrivate MetaCursorRendererNativePrivate;
 
@@ -71,17 +82,13 @@ set_crtc_cursor (MetaCursorRendererNative *native,
     {
       struct gbm_bo *bo;
       union gbm_bo_handle handle;
-      int width, height;
       int hot_x, hot_y;
 
       bo = meta_cursor_reference_get_gbm_bo (cursor, &hot_x, &hot_y);
 
       handle = gbm_bo_get_handle (bo);
-      width = gbm_bo_get_width (bo);
-      height = gbm_bo_get_height (bo);
-
       drmModeSetCursor2 (priv->drm_fd, crtc->crtc_id, handle.u32,
-                         width, height, hot_x, hot_y);
+                         priv->cursor_width, priv->cursor_height, hot_x, hot_y);
     }
   else
     {
@@ -186,6 +193,19 @@ meta_cursor_renderer_native_init (MetaCursorRendererNative *native)
       CoglRenderer *cogl_renderer = cogl_display_get_renderer (cogl_context_get_display (ctx));
       priv->drm_fd = cogl_kms_renderer_get_kms_fd (cogl_renderer);
       priv->gbm = gbm_create_device (priv->drm_fd);
+
+      uint64_t width, height;
+      if (drmGetCap (priv->drm_fd, DRM_CAP_CURSOR_WIDTH, &width) == 0 &&
+          drmGetCap (priv->drm_fd, DRM_CAP_CURSOR_HEIGHT, &height) == 0)
+        {
+          priv->cursor_width = width;
+          priv->cursor_height = height;
+        }
+      else
+        {
+          priv->cursor_width = 64;
+          priv->cursor_height = 64;
+        }
     }
 #endif
 }
@@ -198,6 +218,16 @@ meta_cursor_renderer_native_get_gbm_device (MetaCursorRendererNative *native)
   return priv->gbm;
 }
 
+void
+meta_cursor_renderer_native_get_cursor_size (MetaCursorRendererNative *native,
+                                             uint64_t *width, uint64_t *height)
+{
+  MetaCursorRendererNativePrivate *priv = meta_cursor_renderer_native_get_instance_private (native);
+
+  *width = priv->cursor_width;
+  *height = priv->cursor_height;
+}
+
 void
 meta_cursor_renderer_native_force_update (MetaCursorRendererNative *native)
 {

src/backends/native/meta-cursor-renderer-native.h

@@ -50,6 +50,7 @@ struct _MetaCursorRendererNativeClass
 GType meta_cursor_renderer_native_get_type (void) G_GNUC_CONST;
 
 struct gbm_device * meta_cursor_renderer_native_get_gbm_device (MetaCursorRendererNative *renderer);
+void meta_cursor_renderer_native_get_cursor_size (MetaCursorRendererNative *native, uint64_t *width, uint64_t *height);
 void meta_cursor_renderer_native_force_update (MetaCursorRendererNative *renderer);
 
 #endif /* META_CURSOR_RENDERER_NATIVE_H */

src/backends/x11/meta-monitor-manager-xrandr.c

@@ -144,7 +144,7 @@ static gboolean
 output_get_boolean_property (MetaMonitorManagerXrandr *manager_xrandr,
                              MetaOutput *output, const char *propname)
 {
-  gboolean value;
+  gboolean value = FALSE;
   Atom atom, actual_type;
   int actual_format;
   unsigned long nitems, bytes_after;
@@ -158,12 +158,12 @@ output_get_boolean_property (MetaMonitorManagerXrandr *manager_xrandr,
                         &actual_type, &actual_format,
                         &nitems, &bytes_after, &buffer);
 
-  if (actual_type != XA_CARDINAL || actual_format != 32 ||
+  if (actual_type != XA_CARDINAL || actual_format != 32 || nitems < 1)
-      nitems < 1)
+    goto out;
-    return FALSE;
 
   value = ((int*)buffer)[0];
 
+ out:
   XFree (buffer);
   return value;
 }
@@ -187,7 +187,7 @@ static int
 output_get_backlight_xrandr (MetaMonitorManagerXrandr *manager_xrandr,
                              MetaOutput               *output)
 {
-  gboolean value;
+  int value = -1;
   Atom atom, actual_type;
   int actual_format;
   unsigned long nitems, bytes_after;
@@ -201,14 +201,17 @@ output_get_backlight_xrandr (MetaMonitorManagerXrandr *manager_xrandr,
                         &actual_type, &actual_format,
                         &nitems, &bytes_after, &buffer);
 
-  if (actual_type != XA_INTEGER || actual_format != 32 ||
+  if (actual_type != XA_INTEGER || actual_format != 32 || nitems < 1)
-      nitems < 1)
+    goto out;
-    return -1;
 
   value = ((int*)buffer)[0];
 
+ out:
   XFree (buffer);
-  return normalize_backlight (output, value);
+  if (value > 0)
+    return normalize_backlight (output, value);
+  else
+    return -1;
 }
 
 static void

src/compositor/meta-background-image.c

@@ -185,6 +185,9 @@ file_loaded (GObject      *source_object,
   image->texture = texture;
 
 out:
+  if (pixbuf != NULL)
+    g_object_unref (pixbuf);
+
   image->loaded = TRUE;
   g_signal_emit (image, signals[LOADED], 0);
 }

src/core/constraints.c

@@ -612,9 +612,14 @@ update_onscreen_requirements (MetaWindow     *window,
    */
   if (window->frame && window->decorated)
     {
-      MetaRectangle titlebar_rect;
+      MetaRectangle titlebar_rect, frame_rect;
 
       meta_window_get_titlebar_rect (window, &titlebar_rect);
+      meta_window_get_frame_rect (window, &frame_rect);
+
+      /* translate into screen coordinates */
+      titlebar_rect.x = frame_rect.x;
+      titlebar_rect.y = frame_rect.y;
 
       old = window->require_titlebar_visible;
       window->require_titlebar_visible =

src/core/display-private.h

@@ -57,6 +57,7 @@ typedef struct MetaEdgeResistanceData MetaEdgeResistanceData;
 typedef enum {
   META_LIST_DEFAULT                   = 0,      /* normal windows */
   META_LIST_INCLUDE_OVERRIDE_REDIRECT = 1 << 0, /* normal and O-R */
+  META_LIST_SORTED                    = 1 << 1, /* sort list by mru */
 } MetaListWindowsFlags;
 
 #define _NET_WM_STATE_REMOVE        0    /* remove/unset property */

src/core/display.c

@@ -150,6 +150,9 @@ static void update_cursor_theme (void);
 static void    prefs_changed_callback    (MetaPreference pref,
                                           void          *data);
 
+static int mru_cmp (gconstpointer a,
+                    gconstpointer b);
+
 static void
 meta_display_get_property(GObject         *object,
                           guint            prop_id,
@@ -1061,6 +1064,9 @@ meta_display_list_windows (MetaDisplay          *display,
       tmp = next;
     }
 
+  if (flags & META_LIST_SORTED)
+    winlist = g_slist_sort (winlist, mru_cmp);
+
   return winlist;
 }
 

src/core/keybindings-private.h

@@ -101,6 +101,8 @@ typedef struct
   MetaKeyCombo *iso_next_group_combos;
   int n_iso_next_group_combos;
 
+  xkb_level_index_t keymap_num_levels;
+
   /* Alt+click button grabs */
   ClutterModifierType window_grab_modifiers;
 } MetaKeyBindingManager;

src/core/keybindings.c

@@ -40,7 +40,11 @@
 #include <meta/prefs.h>
 #include "meta-accel-parse.h"
 
+#ifdef __linux__
 #include <linux/input.h>
+#elif !defined KEY_GRAVE
+#define KEY_GRAVE 0x29 /* assume the use of xf86-input-keyboard */
+#endif
 
 #include "backends/x11/meta-backend-x11.h"
 #include "x11/window-x11.h"
@@ -236,29 +240,19 @@ reload_modmap (MetaKeyBindingManager *keys)
 
 static gboolean
 is_keycode_for_keysym (struct xkb_keymap *keymap,
+                       xkb_layout_index_t layout,
+                       xkb_level_index_t  level,
                        xkb_keycode_t      keycode,
                        xkb_keysym_t       keysym)
 {
-  xkb_layout_index_t num_layouts, i;
+  const xkb_keysym_t *syms;
+  int num_syms, k;
 
-  num_layouts = xkb_keymap_num_layouts_for_key (keymap, keycode);
+  num_syms = xkb_keymap_key_get_syms_by_level (keymap, keycode, layout, level, &syms);
-  for (i = 0; i < num_layouts; i++)
+  for (k = 0; k < num_syms; k++)
     {
-      xkb_level_index_t num_levels, j;
+      if (syms[k] == keysym)
-
+        return TRUE;
-      num_levels = xkb_keymap_num_levels_for_key (keymap, keycode, i);
-      for (j = 0; j < num_levels; j++)
-        {
-          const xkb_keysym_t *syms;
-          int num_syms, k;
-
-          num_syms = xkb_keymap_key_get_syms_by_level (keymap, keycode, i, j, &syms);
-          for (k = 0; k < num_syms; k++)
-            {
-              if (syms[k] == keysym)
-                return TRUE;
-            }
-        }
     }
 
   return FALSE;
@@ -268,6 +262,8 @@ typedef struct
 {
   GArray *keycodes;
   xkb_keysym_t keysym;
+  xkb_layout_index_t layout;
+  xkb_level_index_t level;
 } FindKeysymData;
 
 static void
@@ -278,8 +274,10 @@ get_keycodes_for_keysym_iter (struct xkb_keymap *keymap,
   FindKeysymData *search_data = data;
   GArray *keycodes = search_data->keycodes;
   xkb_keysym_t keysym = search_data->keysym;
+  xkb_layout_index_t layout = search_data->layout;
+  xkb_level_index_t level = search_data->level;
 
-  if (is_keycode_for_keysym (keymap, keycode, keysym))
+  if (is_keycode_for_keysym (keymap, layout, level, keycode, keysym))
     g_array_append_val (keycodes, keycode);
 }
 
@@ -307,8 +305,15 @@ get_keycodes_for_keysym (MetaKeyBindingManager  *keys,
   {
     MetaBackend *backend = meta_get_backend ();
     struct xkb_keymap *keymap = meta_backend_get_keymap (backend);
-    FindKeysymData search_data = { retval, keysym };
+    xkb_layout_index_t i;
-    xkb_keymap_key_for_each (keymap, get_keycodes_for_keysym_iter, &search_data);
+    xkb_level_index_t j;
+
+    for (i = 0; i < xkb_keymap_num_layouts (keymap); i++)
+      for (j = 0; j < keys->keymap_num_levels; j++)
+        {
+          FindKeysymData search_data = { retval, keysym, i, j };
+          xkb_keymap_key_for_each (keymap, get_keycodes_for_keysym_iter, &search_data);
+        }
   }
 
  out:
@@ -319,7 +324,7 @@ get_keycodes_for_keysym (MetaKeyBindingManager  *keys,
 
 static guint
 get_first_keycode_for_keysym (MetaKeyBindingManager *keys,
-                              guint                   keysym)
+                              guint                  keysym)
 {
   int *keycodes;
   int n_keycodes;
@@ -336,6 +341,32 @@ get_first_keycode_for_keysym (MetaKeyBindingManager *keys,
   return keycode;
 }
 
+static void
+determine_keymap_num_levels_iter (struct xkb_keymap *keymap,
+                                  xkb_keycode_t      keycode,
+                                  void              *data)
+{
+  xkb_level_index_t *num_levels = data;
+  xkb_layout_index_t i;
+
+  for (i = 0; i < xkb_keymap_num_layouts_for_key (keymap, keycode); i++)
+    {
+      xkb_level_index_t level = xkb_keymap_num_levels_for_key (keymap, keycode, i);
+      if (level > *num_levels)
+        *num_levels = level;
+    }
+}
+
+static void
+determine_keymap_num_levels (MetaKeyBindingManager *keys)
+{
+  MetaBackend *backend = meta_get_backend ();
+  struct xkb_keymap *keymap = meta_backend_get_keymap (backend);
+
+  keys->keymap_num_levels = 0;
+  xkb_keymap_key_for_each (keymap, determine_keymap_num_levels_iter, &keys->keymap_num_levels);
+}
+
 static void
 reload_iso_next_group_combos (MetaKeyBindingManager *keys)
 {
@@ -484,6 +515,8 @@ reload_keycodes (MetaKeyBindingManager *keys)
   meta_topic (META_DEBUG_KEYBINDINGS,
               "Reloading keycodes for binding tables\n");
 
+  determine_keymap_num_levels (keys);
+
   if (keys->overlay_key_combo.keysym != 0)
     {
       keys->overlay_key_combo.keycode =

src/core/prefs.c

@@ -1187,7 +1187,6 @@ settings_changed (GSettings *settings,
     {
       /* Unknown preference type. This quite likely simply isn't
        * a preference we track changes to. */
-      return;
     }
 
   g_variant_unref (value);

src/core/stack.c

@@ -1056,10 +1056,6 @@ stack_sync_to_xserver (MetaStack *stack)
   all_root_children_stacked = g_array_new (FALSE, FALSE, sizeof (guint64));
   x11_hidden_stack_ids = g_array_new (FALSE, FALSE, sizeof (guint64));
 
-  /* The screen guard window sits above all hidden windows and acts as
-   * a barrier to input reaching these windows. */
-  g_array_append_val (x11_hidden_stack_ids, stack->screen->guard_window);
-
   meta_topic (META_DEBUG_STACK, "Top to bottom: ");
   meta_push_no_msg_prefix ();
 
@@ -1107,6 +1103,10 @@ stack_sync_to_xserver (MetaStack *stack)
   meta_topic (META_DEBUG_STACK, "\n");
   meta_pop_no_msg_prefix ();
 
+  /* The screen guard window sits above all hidden windows and acts as
+   * a barrier to input reaching these windows. */
+  g_array_append_val (x11_hidden_stack_ids, stack->screen->guard_window);
+
   /* Sync to server */
 
   meta_topic (META_DEBUG_STACK, "Restacking %u windows\n",

src/core/window.c

@@ -1062,8 +1062,8 @@ _meta_window_shared_new (MetaDisplay         *display,
 
   if (window->initial_workspace_set)
     {
-      gboolean on_all_workspaces;
+      gboolean on_all_workspaces = window->on_all_workspaces;
-      MetaWorkspace *workspace;
+      MetaWorkspace *workspace = NULL;
 
       if (window->initial_workspace == (int) 0xFFFFFFFF)
         {
@@ -1077,15 +1077,13 @@ _meta_window_shared_new (MetaDisplay         *display,
           window->on_all_workspaces_requested = TRUE;
 
           on_all_workspaces = TRUE;
-          workspace = NULL;
         }
-      else
+      else if (!on_all_workspaces)
         {
           meta_topic (META_DEBUG_PLACEMENT,
                       "Window %s is initially on space %d\n",
                       window->desc, window->initial_workspace);
 
-          on_all_workspaces = FALSE;
           workspace = meta_screen_get_workspace_by_index (window->screen,
                                                           window->initial_workspace);
         }
@@ -1099,9 +1097,9 @@ _meta_window_shared_new (MetaDisplay         *display,
    * but appear on other workspaces. override-redirect windows are part
    * of no workspace.
    */
-  if (!window->override_redirect)
+  if (!window->override_redirect && window->workspace == NULL)
     {
-      if (window->workspace == NULL && window->transient_for != NULL)
+      if (window->transient_for != NULL)
         {
           meta_topic (META_DEBUG_PLACEMENT,
                       "Putting window %s on same workspace as parent %s\n",
@@ -1112,7 +1110,15 @@ _meta_window_shared_new (MetaDisplay         *display,
                                window->transient_for->workspace);
         }
 
-      if (window->workspace == NULL)
+      if (window->on_all_workspaces)
+        {
+          meta_topic (META_DEBUG_PLACEMENT,
+                      "Putting window %s on all workspaces\n",
+                      window->desc);
+
+          set_workspace_state (window, TRUE, NULL);
+        }
+      else
         {
           meta_topic (META_DEBUG_PLACEMENT,
                       "Putting window %s on active workspace\n",
@@ -2089,7 +2095,7 @@ windows_overlap (const MetaWindow *w1, const MetaWindow *w2)
 static gboolean
 window_would_be_covered (const MetaWindow *newbie)
 {
-  MetaWorkspace *workspace = newbie->workspace;
+  MetaWorkspace *workspace = meta_window_get_workspace ((MetaWindow *)newbie);
   GList *tmp, *windows;
 
   windows = meta_workspace_list_windows (workspace);
@@ -4291,7 +4297,7 @@ meta_window_focus (MetaWindow  *window,
  *  - workspace->windows is a list of windows that is located on
  *    that workspace.
  *
- *  - If the window is on_all_workspaces, then then
+ *  - If the window is on_all_workspaces, then
  *    window->workspace == NULL, but workspace->windows contains
  *    the window.
  */
@@ -4313,7 +4319,8 @@ set_workspace_state (MetaWindow    *window,
     g_return_if_fail ((window->constructing && on_all_workspaces) || window->unmanaging);
 
   if (on_all_workspaces == window->on_all_workspaces &&
-      workspace == window->workspace)
+      workspace == window->workspace &&
+      !window->constructing)
     return;
 
   if (window->workspace)
@@ -5385,7 +5392,7 @@ meta_window_shove_titlebar_onscreen (MetaWindow *window)
 gboolean
 meta_window_titlebar_is_onscreen (MetaWindow *window)
 {
-  MetaRectangle  titlebar_rect;
+  MetaRectangle  titlebar_rect, frame_rect;
   GList         *onscreen_region;
   gboolean       is_onscreen;
 
@@ -5400,6 +5407,11 @@ meta_window_titlebar_is_onscreen (MetaWindow *window)
   /* Get the rectangle corresponding to the titlebar */
   meta_window_get_titlebar_rect (window, &titlebar_rect);
 
+  /* Translate into screen coordinates */
+  meta_window_get_frame_rect (window, &frame_rect);
+  titlebar_rect.x = frame_rect.x;
+  titlebar_rect.y = frame_rect.y;
+
   /* Run through the spanning rectangles for the screen and see if one of
    * them overlaps with the titlebar sufficiently to consider it onscreen.
    */
@@ -6719,7 +6731,7 @@ meta_window_set_demands_attention (MetaWindow *window)
           other_window = stack->data;
           stack = stack->next;
 
-          if (meta_window_located_on_workspace (other_window, window->workspace))
+          if (meta_window_located_on_workspace (other_window, workspace))
             {
               meta_window_get_frame_rect (other_window, &other_rect);
 

src/core/workspace.c

@@ -170,6 +170,7 @@ MetaWorkspace*
 meta_workspace_new (MetaScreen *screen)
 {
   MetaWorkspace *workspace;
+  GSList *windows, *l;
 
   workspace = g_object_new (META_TYPE_WORKSPACE, NULL);
 
@@ -179,6 +180,13 @@ meta_workspace_new (MetaScreen *screen)
   workspace->windows = NULL;
   workspace->mru_list = NULL;
 
+  /* make sure sticky windows are in our mru_list */
+  windows = meta_display_list_windows (screen->display, META_LIST_SORTED);
+  for (l = windows; l; l = l->next)
+    if (meta_window_located_on_workspace (l->data, workspace))
+      meta_workspace_add_window (workspace, l->data);
+  g_slist_free (windows);
+
   workspace->work_areas_invalid = TRUE;
   workspace->work_area_monitor = NULL;
   workspace->work_area_screen.x = 0;
@@ -358,7 +366,7 @@ meta_workspace_relocate_windows (MetaWorkspace *workspace,
     {
       MetaWindow *window = l->data;
 
-      if (!window->override_redirect)
+      if (!window->on_all_workspaces)
         meta_window_change_workspace (window, new_home);
     }
 

src/meta/workspace.h

@@ -28,7 +28,7 @@
 #define META_TYPE_WORKSPACE            (meta_workspace_get_type ())
 #define META_WORKSPACE(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), META_TYPE_WORKSPACE, MetaWorkspace))
 #define META_WORKSPACE_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass),  META_TYPE_WORKSPACE, MetaWorkspaceClass))
-#define META_IS_WORKSPACE(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), META_WORKSPACE_TYPE))
+#define META_IS_WORKSPACE(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), META_TYPE_WORKSPACE))
 #define META_IS_WORKSPACE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass),  META_TYPE_WORKSPACE))
 #define META_WORKSPACE_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),  META_TYPE_WORKSPACE, MetaWorkspaceClass))
 

src/tests/README

@@ -71,6 +71,11 @@ lower <client-id>/<window-id>
   for Wayland clients. (It's also considered discouraged, but supported, for
   non-override-redirect X11 clients.)
 
+minimize <client-id>/<window-id>
+unminimize <client-id>/<window-id>
+  Ask the client to minimize or unminimize the given window ID. This older
+  term for this operation is "iconify".
+
 destroy <client-id>/<window-id>
   Destroy the given window
 
@@ -80,7 +85,10 @@ wait
 
 assert_stacking <client-id>/<window-id> <client-id>/<window-id> ...
   Assert that the list of client windows known to Mutter is as given and in
-  the given order, bottom to top.
+  the given order, bottom to top. The character '|' can be present in the
+  list of windows to indicate the guard window that separates hidden and
+  visible windows. If '|' isn't present, the guard window is asserted to
+  be below all client windows.
 
   This function also queries the X server stack and verifies that Mutter's
   expectation of the X server stack matches reality.

src/tests/stacking/minimized.metatest

@@ -0,0 +1,18 @@
+new_client 1 x11
+create 1/1
+show 1/1
+create 1/2
+show 1/2
+wait
+assert_stacking 1/1 1/2
+
+minimize 1/2
+wait
+assert_stacking 1/2 | 1/1
+
+# unminimize doesn't work for GTK+ currently, because GTK+ expects
+# to be able to de-iconify with MapWindow, but the window is already
+# mapped.
+activate 1/2
+wait
+assert_stacking 1/1 1/2

src/tests/stacking/override-redirect.metatest

@@ -12,7 +12,7 @@ assert_stacking 1/1 1/2
 
 lower 1/2
 wait
-assert_stacking 1/2 1/1
+assert_stacking 1/2 | 1/1
 
 raise 1/2
 wait

src/tests/test-client.c

@@ -263,6 +263,34 @@ process_line (const char *line)
       XSyncSetCounter (gdk_x11_display_get_xdisplay (gdk_display_get_default ()),
                        counter, sync_value);
     }
+  else if (strcmp (argv[0], "minimize") == 0)
+    {
+      if (argc != 2)
+        {
+          g_print ("usage: minimize <id>");
+          goto out;
+        }
+
+      GtkWidget *window = lookup_window (argv[1]);
+      if (!window)
+        goto out;
+
+      gtk_window_iconify (GTK_WINDOW (window));
+    }
+  else if (strcmp (argv[0], "unminimize") == 0)
+    {
+      if (argc != 2)
+        {
+          g_print ("usage: unminimize <id>");
+          goto out;
+        }
+
+      GtkWidget *window = lookup_window (argv[1]);
+      if (!window)
+        goto out;
+
+      gtk_window_deiconify (GTK_WINDOW (window));
+    }
   else
     {
       g_print ("Unknown command %s", argv[0]);

src/tests/test-runner.c

@@ -413,6 +413,7 @@ typedef struct {
   AsyncWaiter *waiter;
   guint log_handler_id;
   GString *warning_messages;
+  GMainLoop *loop;
 } TestCase;
 
 static gboolean
@@ -483,10 +484,21 @@ test_case_new (void)
 
   test->clients = g_hash_table_new (g_str_hash, g_str_equal);
   test->waiter = async_waiter_new ();
+  test->loop = g_main_loop_new (NULL, FALSE);
 
   return test;
 }
 
+static gboolean
+test_case_before_redraw (gpointer data)
+{
+  TestCase *test = data;
+
+  g_main_loop_quit (test->loop);
+
+  return FALSE;
+}
+
 static gboolean
 test_case_wait (TestCase *test,
                 GError  **error)
@@ -494,11 +506,30 @@ test_case_wait (TestCase *test,
   GHashTableIter iter;
   gpointer key, value;
 
+  /* First have each client set a XSync counter, and wait until
+   * we receive the resulting event - so we know we've received
+   * everything that the client have sent us.
+   */
   g_hash_table_iter_init (&iter, test->clients);
   while (g_hash_table_iter_next (&iter, &key, &value))
     if (!test_client_wait (value, error))
       return FALSE;
 
+  /* Then wait until we've done any outstanding queued up work.
+   * Though we add this as BEFORE_REDRAW, the iteration that runs the
+   * BEFORE_REDRAW idles will proceed on and do the redraw, so we're
+   * waiting until after *all* frame processing.
+   */
+  meta_later_add (META_LATER_BEFORE_REDRAW,
+                  test_case_before_redraw,
+                  test,
+                  NULL);
+  g_main_loop_run (test->loop);
+
+  /* Then set an XSync counter ourselves and and wait until
+   * we receive the resulting event - this makes sure that we've
+   * received back any X events we generated.
+   */
   async_waiter_set_and_wait (test->waiter);
   return TRUE;
 }
@@ -579,6 +610,13 @@ test_case_assert_stacking (TestCase *test,
           else
             g_string_append_printf (stack_string, "(%s)", window->title);
         }
+      else if (windows[i] == display->screen->guard_window)
+        {
+          if (stack_string->len > 0)
+            g_string_append_c (stack_string, ' ');
+
+          g_string_append_c (stack_string, '|');
+        }
     }
 
   for (i = 0; i < n_expected_windows; i++)
@@ -589,6 +627,16 @@ test_case_assert_stacking (TestCase *test,
       g_string_append (expected_string, expected_windows[i]);
     }
 
+  /* Don't require '| ' as a prefix if there are no hidden windows - we
+   * remove the prefix from the actual string instead of adding it to the
+   * expected string for clarity of the error message
+   */
+  if (index (expected_string->str, '|') == NULL && stack_string->str[0] == '|')
+    {
+      g_string_erase (stack_string,
+                      0, stack_string->str[1] == ' ' ? 2 : 1);
+    }
+
   if (strcmp (expected_string->str, stack_string->str) != 0)
     {
       g_set_error (error, TEST_RUNNER_ERROR, TEST_RUNNER_ERROR_ASSERTION_FAILED,
@@ -725,6 +773,8 @@ test_case_do (TestCase *test,
            strcmp (argv[0], "activate") == 0 ||
            strcmp (argv[0], "raise") == 0 ||
            strcmp (argv[0], "lower") == 0 ||
+           strcmp (argv[0], "minimize") == 0 ||
+           strcmp (argv[0], "unminimize") == 0 ||
            strcmp (argv[0], "destroy") == 0)
     {
       if (argc != 2)
@@ -766,6 +816,7 @@ test_case_do (TestCase *test,
     {
       if (!test_case_assert_stacking (test, argv + 1, argc - 1, error))
         return FALSE;
+
       if (!test_case_check_xserver_stacking (test, error))
         return FALSE;
     }

src/wayland/meta-wayland-data-device.c

@@ -34,6 +34,7 @@
 #include "meta-wayland-seat.h"
 #include "meta-wayland-pointer.h"
 #include "meta-wayland-private.h"
+#include "meta-cursor-tracker-private.h"
 
 typedef struct
 {
@@ -46,6 +47,7 @@ struct _MetaWaylandDataSource
 {
   struct wl_resource *resource;
   struct wl_array mime_types;
+  gboolean has_target;
 };
 
 static void
@@ -67,7 +69,10 @@ data_offer_accept (struct wl_client *client,
    * this be a wl_data_device request? */
 
   if (offer->source)
-    wl_data_source_send_target (offer->source->resource, mime_type);
+    {
+      wl_data_source_send_target (offer->source->resource, mime_type);
+      offer->source->has_target = mime_type != NULL;
+    }
 }
 
 static void
@@ -162,7 +167,7 @@ static struct wl_data_source_interface data_source_interface = {
   data_source_destroy
 };
 
-typedef struct {
+struct _MetaWaylandDragGrab {
   MetaWaylandPointerGrab  generic;
 
   MetaWaylandSeat        *seat;
@@ -177,7 +182,12 @@ typedef struct {
 
   MetaWaylandDataSource  *drag_data_source;
   struct wl_listener      drag_data_source_listener;
-} MetaWaylandDragGrab;
+
+  MetaWaylandSurface     *drag_origin;
+  struct wl_listener      drag_origin_listener;
+
+  int                     drag_start_x, drag_start_y;
+};
 
 static void
 destroy_drag_focus (struct wl_listener *listener, void *data)
@@ -202,6 +212,8 @@ drag_grab_focus (MetaWaylandPointerGrab *grab,
   if (drag_grab->drag_focus == surface)
     return;
 
+  meta_wayland_pointer_set_focus (&seat->pointer, surface, FALSE);
+
   if (drag_grab->drag_focus_data_device)
     {
       wl_data_device_send_leave (drag_grab->drag_focus_data_device);
@@ -241,6 +253,40 @@ drag_grab_focus (MetaWaylandPointerGrab *grab,
   wl_resource_add_destroy_listener (data_device_resource, &drag_grab->drag_focus_listener);
 }
 
+static void
+drag_grab_update_dnd_surface_position (MetaWaylandDragGrab *drag_grab)
+{
+  MetaWaylandSeat *seat = drag_grab->seat;
+  ClutterPoint pos;
+
+  clutter_input_device_get_coords (seat->pointer.device, NULL, &pos);
+  meta_cursor_tracker_update_dnd_surface_position (seat->pointer.cursor_tracker,
+                                                   (int) pos.x, (int) pos.y);
+}
+
+static void
+drag_grab_update_dnd_surface (MetaWaylandDragGrab *drag_grab)
+{
+  MetaWaylandSurface *surface = drag_grab->drag_surface;
+  MetaWaylandSeat *seat = drag_grab->seat;
+  CoglTexture *texture = NULL;
+  int offset_x, offset_y;
+
+  if (surface)
+    {
+      if (surface->buffer)
+        texture = surface->buffer->texture;
+
+      offset_x = surface->offset_x;
+      offset_y = surface->offset_y;
+    }
+  else
+    offset_x = offset_y = 0;
+
+  meta_cursor_tracker_set_dnd_surface (seat->pointer.cursor_tracker,
+                                       texture, offset_x, offset_y);
+}
+
 static void
 drag_grab_motion (MetaWaylandPointerGrab *grab,
 		  const ClutterEvent     *event)
@@ -248,6 +294,8 @@ drag_grab_motion (MetaWaylandPointerGrab *grab,
   MetaWaylandDragGrab *drag_grab = (MetaWaylandDragGrab*) grab;
   wl_fixed_t sx, sy;
 
+  drag_grab_update_dnd_surface_position (drag_grab);
+
   if (drag_grab->drag_focus_data_device)
     {
       meta_wayland_pointer_get_relative_coordinates (grab->pointer,
@@ -259,9 +307,38 @@ drag_grab_motion (MetaWaylandPointerGrab *grab,
     }
 }
 
+static void
+data_device_dnd_failed (MetaWaylandDragGrab *drag_grab)
+{
+  MetaWaylandSurface *surface = drag_grab->drag_origin;
+  MetaWaylandSeat *seat = drag_grab->seat;
+  ClutterPoint dest;
+
+  if (drag_grab->drag_origin &&
+      !meta_window_is_hidden (surface->window))
+    {
+      /* Find out the snap back position */
+      clutter_actor_get_transformed_position (CLUTTER_ACTOR (meta_surface_actor_get_texture (surface->surface_actor)),
+                                              &dest.x, &dest.y);
+      dest.x += drag_grab->drag_start_x;
+      dest.y += drag_grab->drag_start_y;
+    }
+  else
+    clutter_input_device_get_coords (seat->pointer.device, NULL, &dest);
+
+  meta_cursor_tracker_dnd_failed (seat->pointer.cursor_tracker,
+                                  dest.x, dest.y);
+}
+
 static void
 data_device_end_drag_grab (MetaWaylandDragGrab *drag_grab)
 {
+  if (drag_grab->drag_origin)
+    {
+      drag_grab->drag_origin = NULL;
+      wl_list_remove (&drag_grab->drag_origin_listener.link);
+    }
+
   if (drag_grab->drag_surface)
     {
       drag_grab->drag_surface = NULL;
@@ -269,9 +346,15 @@ data_device_end_drag_grab (MetaWaylandDragGrab *drag_grab)
     }
 
   if (drag_grab->drag_data_source)
-    wl_list_remove (&drag_grab->drag_data_source_listener.link);
+    {
+      drag_grab->drag_data_source->has_target = FALSE;
+      wl_list_remove (&drag_grab->drag_data_source_listener.link);
+    }
+
+  drag_grab->seat->data_device.current_grab = NULL;
 
   drag_grab_focus (&drag_grab->generic, NULL);
+  drag_grab_update_dnd_surface (drag_grab);
 
   meta_wayland_pointer_end_grab (drag_grab->generic.pointer);
   g_slice_free (MetaWaylandDragGrab, drag_grab);
@@ -285,10 +368,15 @@ drag_grab_button (MetaWaylandPointerGrab *grab,
   MetaWaylandSeat *seat = drag_grab->seat;
   ClutterEventType event_type = clutter_event_type (event);
 
-  if (drag_grab->drag_focus_data_device &&
+  if (drag_grab->generic.pointer->grab_button == clutter_event_get_button (event) &&
-      drag_grab->generic.pointer->grab_button == clutter_event_get_button (event) &&
       event_type == CLUTTER_BUTTON_RELEASE)
-    wl_data_device_send_drop (drag_grab->drag_focus_data_device);
+    {
+      if (drag_grab->drag_focus_data_device &&
+          drag_grab->drag_data_source->has_target)
+        wl_data_device_send_drop (drag_grab->drag_focus_data_device);
+      else
+        data_device_dnd_failed (drag_grab);
+    }
 
   if (seat->pointer.button_count == 0 &&
       event_type == CLUTTER_BUTTON_RELEASE)
@@ -301,6 +389,16 @@ static const MetaWaylandPointerGrabInterface drag_grab_interface = {
   drag_grab_button,
 };
 
+static void
+destroy_data_device_origin (struct wl_listener *listener, void *data)
+{
+  MetaWaylandDragGrab *drag_grab =
+    wl_container_of (listener, drag_grab, drag_origin_listener);
+
+  drag_grab->drag_origin = NULL;
+  data_device_end_drag_grab (drag_grab);
+}
+
 static void
 destroy_data_device_source (struct wl_listener *listener, void *data)
 {
@@ -318,6 +416,7 @@ destroy_data_device_icon (struct wl_listener *listener, void *data)
     wl_container_of (listener, drag_grab, drag_data_source_listener);
 
   drag_grab->drag_surface = NULL;
+  drag_grab_update_dnd_surface (drag_grab);
 }
 
 static void
@@ -329,20 +428,29 @@ data_device_start_drag (struct wl_client *client,
 {
   MetaWaylandDataDevice *data_device = wl_resource_get_user_data (resource);
   MetaWaylandSeat *seat = wl_container_of (data_device, seat, data_device);
+  MetaWaylandSurface *surface = NULL;
   MetaWaylandDragGrab *drag_grab;
+  ClutterPoint pos;
 
-  if ((seat->pointer.button_count == 0 ||
+  if (origin_resource)
-       seat->pointer.grab_serial != serial ||
+    surface = wl_resource_get_user_data (origin_resource);
-       !seat->pointer.focus_surface ||
+
-       seat->pointer.focus_surface != wl_resource_get_user_data (origin_resource)))
+  if (!surface)
+    return;
+
+  if (seat->pointer.button_count == 0 ||
+      seat->pointer.grab_serial != serial ||
+      !seat->pointer.focus_surface ||
+      seat->pointer.focus_surface != surface)
     return;
 
   /* FIXME: Check that the data source type array isn't empty. */
 
-  if (seat->pointer.grab != &seat->pointer.default_grab)
+  if (data_device->current_grab ||
+      seat->pointer.grab != &seat->pointer.default_grab)
     return;
 
-  drag_grab = g_slice_new0 (MetaWaylandDragGrab);
+  data_device->current_grab = drag_grab = g_slice_new0 (MetaWaylandDragGrab);
 
   drag_grab->generic.interface = &drag_grab_interface;
   drag_grab->generic.pointer = &seat->pointer;
@@ -350,6 +458,17 @@ data_device_start_drag (struct wl_client *client,
   drag_grab->drag_client = client;
   drag_grab->seat = seat;
 
+  drag_grab->drag_origin = surface;
+  drag_grab->drag_origin_listener.notify = destroy_data_device_origin;
+  wl_resource_add_destroy_listener (origin_resource,
+                                    &drag_grab->drag_origin_listener);
+
+  clutter_input_device_get_coords (seat->pointer.device, NULL, &pos);
+  clutter_actor_transform_stage_point (CLUTTER_ACTOR (meta_surface_actor_get_texture (surface->surface_actor)),
+                                       pos.x, pos.y, &pos.x, &pos.y);
+  drag_grab->drag_start_x = pos.x;
+  drag_grab->drag_start_y = pos.y;
+
   if (source_resource)
     {
       drag_grab->drag_data_source = wl_resource_get_user_data (source_resource);
@@ -366,8 +485,10 @@ data_device_start_drag (struct wl_client *client,
                                         &drag_grab->drag_icon_listener);
     }
 
-  meta_wayland_pointer_set_focus (&seat->pointer, NULL);
+  meta_wayland_pointer_set_focus (&seat->pointer, NULL, TRUE);
   meta_wayland_pointer_start_grab (&seat->pointer, (MetaWaylandPointerGrab*)drag_grab);
+  drag_grab_update_dnd_surface_position (drag_grab);
+  drag_grab_update_dnd_surface (drag_grab);
 }
 
 static void
@@ -551,3 +672,18 @@ meta_wayland_data_device_set_keyboard_focus (MetaWaylandDataDevice *data_device)
       wl_data_device_send_selection (data_device_resource, offer);
     }
 }
+
+gboolean
+meta_wayland_data_device_is_dnd_surface (MetaWaylandDataDevice *data_device,
+                                         MetaWaylandSurface    *surface)
+{
+  return data_device->current_grab &&
+    data_device->current_grab->drag_surface == surface;
+}
+
+void
+meta_wayland_data_device_update_dnd_surface (MetaWaylandDataDevice *data_device)
+{
+  if (data_device->current_grab)
+    drag_grab_update_dnd_surface (data_device->current_grab);
+}

src/wayland/meta-wayland-data-device.h

@@ -27,12 +27,15 @@
 
 #include "meta-wayland-types.h"
 
+typedef struct _MetaWaylandDragGrab MetaWaylandDragGrab;
+
 struct _MetaWaylandDataDevice
 {
   uint32_t selection_serial;
   MetaWaylandDataSource *selection_data_source;
   struct wl_listener selection_data_source_listener;
   struct wl_list resource_list;
+  MetaWaylandDragGrab *current_grab;
 };
 
 void meta_wayland_data_device_manager_init (MetaWaylandCompositor *compositor);
@@ -41,4 +44,8 @@ void meta_wayland_data_device_init (MetaWaylandDataDevice *data_device);
 
 void meta_wayland_data_device_set_keyboard_focus (MetaWaylandDataDevice *data_device);
 
+gboolean meta_wayland_data_device_is_dnd_surface (MetaWaylandDataDevice *data_device,
+                                                  MetaWaylandSurface    *surface);
+void meta_wayland_data_device_update_dnd_surface (MetaWaylandDataDevice *data_device);
+
 #endif /* META_WAYLAND_DATA_DEVICE_H */

src/wayland/meta-wayland-pointer.c

@@ -95,7 +95,7 @@ pointer_handle_focus_surface_destroy (struct wl_listener *listener, void *data)
 {
   MetaWaylandPointer *pointer = wl_container_of (listener, pointer, focus_surface_listener);
 
-  meta_wayland_pointer_set_focus (pointer, NULL);
+  meta_wayland_pointer_set_focus (pointer, NULL, TRUE);
 }
 
 static void
@@ -107,7 +107,7 @@ default_grab_focus (MetaWaylandPointerGrab *grab,
   if (pointer->button_count > 0)
     return;
 
-  meta_wayland_pointer_set_focus (pointer, surface);
+  meta_wayland_pointer_set_focus (pointer, surface, TRUE);
 }
 
 static void
@@ -178,7 +178,7 @@ default_grab_button (MetaWaylandPointerGrab *grab,
     }
 
   if (pointer->button_count == 0 && event_type == CLUTTER_BUTTON_RELEASE)
-    meta_wayland_pointer_set_focus (pointer, pointer->current);
+    meta_wayland_pointer_set_focus (pointer, pointer->current, TRUE);
 }
 
 static const MetaWaylandPointerGrabInterface default_pointer_grab_interface = {
@@ -218,7 +218,7 @@ meta_wayland_pointer_init (MetaWaylandPointer *pointer,
 void
 meta_wayland_pointer_release (MetaWaylandPointer *pointer)
 {
-  meta_wayland_pointer_set_focus (pointer, NULL);
+  meta_wayland_pointer_set_focus (pointer, NULL, TRUE);
   set_cursor_surface (pointer, NULL);
 
   pointer->display = NULL;
@@ -480,7 +480,8 @@ broadcast_focus (MetaWaylandPointer *pointer,
 
 void
 meta_wayland_pointer_set_focus (MetaWaylandPointer *pointer,
-                                MetaWaylandSurface *surface)
+                                MetaWaylandSurface *surface,
+                                gboolean            emit_crossing)
 {
   if (pointer->display == NULL)
     return;
@@ -500,9 +501,12 @@ meta_wayland_pointer_set_focus (MetaWaylandPointer *pointer,
           struct wl_display *display = wl_client_get_display (client);
           uint32_t serial = wl_display_next_serial (display);
 
-          wl_resource_for_each (resource, l)
+          if (emit_crossing)
             {
-              wl_pointer_send_leave (resource, serial, pointer->focus_surface->resource);
+              wl_resource_for_each (resource, l)
+                {
+                  wl_pointer_send_leave (resource, serial, pointer->focus_surface->resource);
+                }
             }
 
           move_resources (&pointer->resource_list, &pointer->focus_resource_list);
@@ -533,7 +537,7 @@ meta_wayland_pointer_set_focus (MetaWaylandPointer *pointer,
                                  wl_resource_get_client (pointer->focus_surface->resource));
 
       l = &pointer->focus_resource_list;
-      if (!wl_list_empty (l))
+      if (emit_crossing && !wl_list_empty (l))
         {
           struct wl_client *client = wl_resource_get_client (pointer->focus_surface->resource);
           struct wl_display *display = wl_client_get_display (client);
@@ -595,9 +599,9 @@ popup_grab_focus (MetaWaylandPointerGrab *grab,
   /* Popup grabs are in owner-events mode (ie, events for the same client
      are reported as normal) */
   if (surface && wl_resource_get_client (surface->resource) == popup_grab->grab_client)
-    meta_wayland_pointer_set_focus (grab->pointer, surface);
+    meta_wayland_pointer_set_focus (grab->pointer, surface, TRUE);
   else
-    meta_wayland_pointer_set_focus (grab->pointer, NULL);
+    meta_wayland_pointer_set_focus (grab->pointer, NULL, TRUE);
 }
 
 static void

src/wayland/meta-wayland-pointer.h

@@ -86,7 +86,8 @@ gboolean meta_wayland_pointer_handle_event (MetaWaylandPointer *pointer,
                                             const ClutterEvent *event);
 
 void meta_wayland_pointer_set_focus (MetaWaylandPointer *pointer,
-                                     MetaWaylandSurface *surface);
+                                     MetaWaylandSurface *surface,
+                                     gboolean            emit_crossing);
 
 void meta_wayland_pointer_start_grab (MetaWaylandPointer *pointer,
                                       MetaWaylandPointerGrab *grab);

src/wayland/meta-wayland-surface.c

@@ -175,6 +175,13 @@ cursor_surface_commit (MetaWaylandSurface      *surface,
     meta_wayland_seat_update_cursor_surface (surface->compositor->seat);
 }
 
+static void
+dnd_surface_commit (MetaWaylandSurface      *surface,
+                    MetaWaylandPendingState *pending)
+{
+  meta_wayland_data_device_update_dnd_surface (&surface->compositor->seat->data_device);
+}
+
 static void
 calculate_surface_window_geometry (MetaWaylandSurface *surface,
                                    MetaRectangle      *total_geometry,
@@ -429,6 +436,9 @@ commit_pending_state (MetaWaylandSurface      *surface,
   if (!cairo_region_is_empty (pending->damage))
     surface_process_damage (surface, pending->damage);
 
+  surface->offset_x += pending->dx;
+  surface->offset_y += pending->dy;
+
   if (pending->opaque_region)
     {
       pending->opaque_region = scale_region (pending->opaque_region, surface->scale);
@@ -442,6 +452,8 @@ commit_pending_state (MetaWaylandSurface      *surface,
 
   if (surface == compositor->seat->pointer.cursor_surface)
     cursor_surface_commit (surface, pending);
+  else if (meta_wayland_data_device_is_dnd_surface (&compositor->seat->data_device, surface))
+    dnd_surface_commit (surface, pending);
   else if (surface->window)
     toplevel_surface_commit (surface, pending);
   else if (surface->subsurface.resource)
@@ -1441,12 +1453,15 @@ bind_gtk_shell (struct wl_client *client,
                 guint32           id)
 {
   struct wl_resource *resource;
+  uint32_t capabilities = 0;
 
   resource = wl_resource_create (client, &gtk_shell_interface, version, id);
   wl_resource_set_implementation (resource, &meta_wayland_gtk_shell_interface, data, NULL);
 
-  /* FIXME: ask the plugin */
+  if (!meta_prefs_get_show_fallback_app_menu ())
-  gtk_shell_send_capabilities (resource, GTK_SHELL_CAPABILITY_GLOBAL_APP_MENU);
+    capabilities = GTK_SHELL_CAPABILITY_GLOBAL_APP_MENU;
+
+  gtk_shell_send_capabilities (resource, capabilities);
 }
 
 static void

src/wayland/meta-wayland-surface.h

@@ -115,6 +115,8 @@ struct _MetaWaylandSurface
     GSList *pending_placement_ops;
   } sub;
 
+  int32_t offset_x, offset_y;
+
   gboolean has_set_geometry;
 
   /* All the pending state that wl_surface.commit will apply. */