[mutter/wayland] window: Track known_to_compositor and visible_to_compositor separately

[Jasper St. Pierre <jstpierre src gnome org>]

commit b367965f6c66bcbbd8b1c8daddc550d3d0fed231
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Fri Mar 28 13:50:45 2014 -0400

    window: Track known_to_compositor and visible_to_compositor separately
    
    Really, visible_to_compositor means that the window is shown, e.g.
    not minimized. We need to be using a boolean tracking whether we've
    called meta_compositor_add_window / meta_compositor_remove_window.
    
    This fixes a jump during window placement when a window appears.

 src/core/window-private.h |   10 +++++++++-
 src/core/window.c         |    5 ++++-
 2 files changed, 13 insertions(+), 2 deletions(-)
---
diff --git a/src/core/window-private.h b/src/core/window-private.h
index ebda724..374bca7 100644
--- a/src/core/window-private.h
+++ b/src/core/window-private.h
@@ -220,10 +220,18 @@ struct _MetaWindow
    */
   guint hidden : 1;
 
-  /* Whether the compositor thinks the window is visible
+  /* Whether the compositor thinks the window is visible.
+   * This should match up with calls to meta_compositor_show_window /
+   * meta_compositor_hide_window.
    */
   guint visible_to_compositor : 1;
 
+  /* Whether the compositor knows about the window.
+   * This should match up with calls to meta_compositor_add_window /
+   * meta_compositor_remove_window.
+   */
+  guint known_to_compositor : 1;
+
   /* When we next show or hide the window, what effect we should
    * tell the compositor to perform.
    */
diff --git a/src/core/window.c b/src/core/window.c
index 2905023..1deece0 100644
--- a/src/core/window.c
+++ b/src/core/window.c
@@ -867,6 +867,7 @@ _meta_window_shared_new (MetaDisplay         *display,
   window->iconic = FALSE;
   window->mapped = attrs->map_state != IsUnmapped;
   window->hidden = FALSE;
+  window->known_to_compositor = FALSE;
   window->visible_to_compositor = FALSE;
   window->pending_compositor_effect = effect;
   /* if already mapped, no need to worry about focus-on-first-time-showing */
@@ -1195,6 +1196,7 @@ _meta_window_shared_new (MetaDisplay         *display,
     }
 
   meta_compositor_add_window (screen->display->compositor, window);
+  window->known_to_compositor = TRUE;
 
   /* Sync stack changes */
   meta_stack_thaw (window->screen->stack);
@@ -1476,6 +1478,7 @@ meta_window_unmanage (MetaWindow  *window,
     }
 
   meta_compositor_remove_window (window->display->compositor, window);
+  window->known_to_compositor = FALSE;
 
   if (window->display->window_with_menu == window)
     {
@@ -4331,7 +4334,7 @@ meta_window_move_resize_internal (MetaWindow          *window,
                   newx, newy, window->rect.width, window->rect.height,
                   window->user_rect.x, window->user_rect.y,
                   window->user_rect.width, window->user_rect.height);
-      if (window->visible_to_compositor)
+      if (window->known_to_compositor)
         meta_compositor_sync_window_geometry (window->display->compositor,
                                               window,
                                               did_placement);