This change adds support for the new _NET_WM_FULLSCREEN_MONITORS

 	property and client message.  This allows client applications to request
 	that a fullscreen window cover more than one monitor.
 	* src/include/boxes.h:
	* src/core/boxes.c: Add meta_rectangle_union
 	* src/core/window-private.h:
	* src/core/window.c:
 	(meta_window_new_with_attrs, meta_window_free, set_net_wm_state,
 	meta_window_update_fullscreen_monitors, meta_window_client_message): Add
 	MetaWindow property to store fullscreen monitors field, update
 	_NET_WM_FULLSCREEN_MONITORS property on windows, and handle client
 	message.
 	* src/core/atomnames.h: Add _NET_WM_FULLSCREEN_MONITORS atom.
 	* src/core/constraints.c (setup_constraint_info): If
 	_NET_WM_FULLSCREEN_MONITORS is interesting, use the data stored in
 	MetaWindow::fullscreen_monitors to determine the fullscreen area instead
 	of the basic xinerama_info area.


svn path=/trunk/; revision=4021

1 files changed, 34 insertions, 0 deletions

diff --git a/src/core/boxes.c b/src/core/boxes.c
index 21a9e2be..139f1736 100644
--- a/src/core/boxes.c
+++ b/src/core/boxes.c
@@ -197,6 +197,40 @@ meta_rectangle_equal (const MetaRectangle *src1,
           (src1->height == src2->height));
 }
 
+void
+meta_rectangle_union (const MetaRectangle *rect1,
+                      const MetaRectangle *rect2,
+                      MetaRectangle       *dest)
+{
+  int dest_x, dest_y;
+  int dest_w, dest_h;
+
+  dest_x = rect1->x;
+  dest_y = rect1->y;
+  dest_w = rect1->width;
+  dest_h = rect1->height;
+
+  if (rect2->x < dest_x)
+    {
+      dest_w += dest_x - rect2->x;
+      dest_x = rect2->x;
+    }
+  if (rect2->y < dest_y)
+    {
+      dest_h += dest_y - rect2->y;
+      dest_y = rect2->y;
+    }
+  if (rect2->x + rect2->width > dest_x + dest_w)
+    dest_w = rect2->x + rect2->width - dest_x;
+  if (rect2->y + rect2->height > dest_y + dest_h)
+    dest_h = rect2->y + rect2->height - dest_y;
+
+  dest->x = dest_x;
+  dest->y = dest_y;
+  dest->width = dest_w;
+  dest->height = dest_h;
+}
+
 gboolean
 meta_rectangle_overlap (const MetaRectangle *rect1,
                         const MetaRectangle *rect2)