Basic CM minimize effect

Added minimize hook to the compositor, hooked up into MetaWindow, implemented
in the clutter compositor.

src/compositor/compositor-clutter.c

@@ -40,6 +40,7 @@
 #define TILE_HEIGHT (3*MAX_TILE_SZ)
 
 #define DESTROY_TIMEOUT   300
+#define MINIMIZE_TIMEOUT  600
 
 ClutterActor*
 tidy_texture_frame_new (ClutterTexture *texture,
@@ -111,6 +112,7 @@ typedef struct _MetaCompScreen
   GSList       *dock_windows;
 
   ClutterEffectTemplate *destroy_effect;
+  ClutterEffectTemplate *minimize_effect;
 
   ClutterActor *shadow_src;
 
@@ -135,6 +137,7 @@ typedef struct _MetaCompWindow
   gboolean          shaped               : 1;
   gboolean          destroy_pending      : 1;
   gboolean          argb32               : 1;
+  gboolean          minimize_in_progress : 1;
 
 } MetaCompWindow;
 
@@ -543,6 +546,8 @@ map_win (MetaDisplay *display,
       cw->back_pixmap = None;
     }
 
+  cw->minimize_in_progress = FALSE;
+
   if (cw->shadow)
     clutter_actor_show (cw->shadow);
 
@@ -570,10 +575,13 @@ unmap_win (MetaDisplay *display,
 
   free_win (cw, FALSE);
 
+  if (!cw->minimize_in_progress)
+    {
       clutter_actor_hide (cw->actor);
 
       if (cw->shadow)
 	clutter_actor_hide (cw->shadow);
+    }
 }
 
 
@@ -1135,6 +1143,12 @@ clutter_cmp_manage_screen (MetaCompositor *compositor,
     =  clutter_effect_template_new (clutter_timeline_new_for_duration (
 							DESTROY_TIMEOUT),
                                     CLUTTER_ALPHA_SINE_INC);
+
+
+  info->minimize_effect
+    =  clutter_effect_template_new (clutter_timeline_new_for_duration (
+							MINIMIZE_TIMEOUT),
+                                    CLUTTER_ALPHA_SINE_INC);
 #endif
 }
 
@@ -1355,6 +1369,93 @@ clutter_cmp_destroy_window (MetaCompositor *compositor,
 #endif
 }
 
+static void
+on_minimize_effect_complete (ClutterActor *actor,
+			     gpointer user_data)
+{
+  MetaCompWindow *cw = (MetaCompWindow *)user_data;
+
+  /*
+   * Must reverse the effect of the effect once we hide the actor.
+   */
+  clutter_actor_hide (cw->actor);
+  clutter_actor_set_opacity (cw->actor, cw->opacity);
+  clutter_actor_set_scale (cw->actor, 1.0, 1.0);
+  clutter_actor_move_anchor_point_from_gravity (cw->actor,
+                                                CLUTTER_GRAVITY_NORTH_WEST);
+
+  if (cw->shadow)
+    {
+      clutter_actor_hide (cw->shadow);
+      clutter_actor_set_opacity (cw->shadow, 0xff);
+      clutter_actor_set_scale (cw->shadow, 1.0, 1.0);
+      clutter_actor_move_anchor_point_from_gravity (cw->shadow,
+                                                CLUTTER_GRAVITY_NORTH_WEST);
+    }
+}
+
+static void
+clutter_cmp_minimize_window (MetaCompositor *compositor,
+                            MetaWindow     *window)
+{
+#ifdef HAVE_COMPOSITE_EXTENSIONS
+  MetaCompWindow *cw = NULL;
+  MetaCompScreen *info;
+  MetaScreen *screen;
+  MetaFrame *f = meta_window_get_frame (window);
+
+  screen = meta_window_get_screen (window);
+  info = meta_screen_get_compositor_data (screen);
+
+  /* Chances are we actually get the window frame here */
+  cw = find_window_for_screen (screen,
+                               f ? meta_frame_get_xwindow (f) :
+                               meta_window_get_xwindow (window));
+  if (!cw)
+    return;
+
+  meta_verbose ("Animating minimize of 0x%x\n",
+		(guint)meta_window_get_xwindow (window));
+
+  cw->minimize_in_progress = TRUE;
+
+  clutter_actor_move_anchor_point_from_gravity (cw->actor,
+                                                CLUTTER_GRAVITY_SOUTH_WEST);
+
+  clutter_effect_fade (info->minimize_effect,
+		       cw->actor,
+		       0,
+		       on_minimize_effect_complete,
+		       (gpointer)cw);
+
+  clutter_effect_scale (info->minimize_effect,
+                        cw->actor,
+                        0.0,
+                        0.0,
+                        NULL,
+                        NULL);
+
+  if (cw->shadow)
+    {
+      clutter_actor_move_anchor_point_from_gravity (cw->shadow,
+						  CLUTTER_GRAVITY_SOUTH_WEST);
+
+      clutter_effect_fade (info->minimize_effect,
+                           cw->shadow,
+                           0,
+                           NULL,
+                           NULL);
+
+      clutter_effect_scale (info->minimize_effect,
+                            cw->shadow,
+                            0.0,
+                            0.0,
+                            NULL,
+                            NULL);
+    }
+
+#endif
+}
 
 static MetaCompositor comp_info = {
   clutter_cmp_destroy,
@@ -1366,7 +1467,8 @@ static MetaCompositor comp_info = {
   clutter_cmp_process_event,
   clutter_cmp_get_window_pixmap,
   clutter_cmp_set_active_window,
-  clutter_cmp_destroy_window
+  clutter_cmp_destroy_window,
+  clutter_cmp_minimize_window
 };
 
 MetaCompositor *

src/compositor/compositor-private.h

@@ -53,6 +53,8 @@ struct _MetaCompositor
   void (*destroy_window) (MetaCompositor *compositor,
                           MetaWindow     *window);
 
+  void (*minimize_window) (MetaCompositor *compositor,
+                           MetaWindow     *window);
 };
 
 #endif

src/compositor/compositor.c

@@ -169,3 +169,13 @@ meta_compositor_destroy_window (MetaCompositor *compositor,
     compositor->destroy_window (compositor, window);
 #endif
 }
+
+void
+meta_compositor_minimize_window (MetaCompositor *compositor,
+                                 MetaWindow     *window)
+{
+#ifdef HAVE_COMPOSITE_EXTENSIONS
+  if (compositor && compositor->minimize_window)
+    compositor->minimize_window (compositor, window);
+#endif
+}

src/core/window.c

@@ -1475,6 +1475,13 @@ implement_showing (MetaWindow *window,
 
           meta_window_get_outer_rect (window, &window_rect);
 
+          if (window->display->compositor)
+            {
+              meta_compositor_minimize_window (window->display->compositor,
+                                               window);
+              finish_minimize (window);
+            }
+          else
           meta_effect_run_minimize (window,
                                     &window_rect,
                                     &icon_rect,

src/include/compositor.h

@@ -72,6 +72,10 @@ void
 meta_compositor_destroy_window (MetaCompositor *compositor,
                                 MetaWindow     *window);
 
+void
+meta_compositor_minimize_window (MetaCompositor *compositor,
+                                 MetaWindow     *window);
+
 #endif