[mutter] tiling: for tiled maximization use the tile area as target size/position

[Rui Matos <rtcm src gnome org>]

commit c39129b6e88fbc3bc61196ad3cd91c2a8baca615
Author: Rui Matos <tiagomatos gmail com>
Date:   Sat Aug 27 21:15:19 2011 +0100

    tiling: for tiled maximization use the tile area as target size/position
    
    When using more than one monitor, tiled maximization can be triggered with the
    pointer in one monitor while most of the window area remains in another. This
    means that the maximization constraint would maximize the window into the wrong
    monitor as it uses the work area size/position as target.
    
    Fix this by using the current tile area as target size/position.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=657519

 src/core/constraints.c    |   10 ++++++++--
 src/core/window-private.h |    2 ++
 2 files changed, 10 insertions(+), 2 deletions(-)
---
diff --git a/src/core/constraints.c b/src/core/constraints.c
index 557a13f..6ceb336 100644
--- a/src/core/constraints.c
+++ b/src/core/constraints.c
@@ -805,8 +805,14 @@ constrain_maximization (MetaWindow         *window,
     return TRUE;
 
   /* Calculate target_size = maximized size of (window + frame) */
-  if (window->maximized_horizontally && window->maximized_vertically)
-    target_size = info->work_area_monitor;
+  if (META_WINDOW_TILED_MAXIMIZED (window))
+    {
+      meta_window_get_current_tile_area (window, &target_size);
+    }
+  else if (META_WINDOW_MAXIMIZED (window))
+    {
+      target_size = info->work_area_monitor;
+    }
   else
     {
       /* Amount of maximization possible in a single direction depends
diff --git a/src/core/window-private.h b/src/core/window-private.h
index 1d1ae91..8a5fd62 100644
--- a/src/core/window-private.h
+++ b/src/core/window-private.h
@@ -425,6 +425,8 @@ struct _MetaWindowClass
                                        (w)->tile_mode == META_TILE_LEFT)
 #define META_WINDOW_TILED_RIGHT(w)    (META_WINDOW_TILED_SIDE_BY_SIDE(w) && \
                                        (w)->tile_mode == META_TILE_RIGHT)
+#define META_WINDOW_TILED_MAXIMIZED(w)(META_WINDOW_MAXIMIZED(w) && \
+                                       (w)->tile_mode == META_TILE_MAXIMIZED)
 #define META_WINDOW_ALLOWS_MOVE(w)     ((w)->has_move_func && !(w)->fullscreen)
 #define META_WINDOW_ALLOWS_RESIZE_EXCEPT_HINTS(w)   ((w)->has_resize_func && !META_WINDOW_MAXIMIZED (w) && !META_WINDOW_TILED_SIDE_BY_SIDE(w) && !(w)->fullscreen && !(w)->shaded)
 #define META_WINDOW_ALLOWS_RESIZE(w)   (META_WINDOW_ALLOWS_RESIZE_EXCEPT_HINTS (w) &&                \