[the-board] [ui] Fix window size query in Page

[Lucas Almeida Rocha <lucasr src gnome org>]

commit c4be37b402b03b287efc9fa614828ea339e779b9
Author: Lucas Rocha <lucasr gnome org>
Date:   Sun Nov 14 01:48:46 2010 +0000

    [ui] Fix window size query in Page

 src/js/ui/page.js |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)
---
diff --git a/src/js/ui/page.js b/src/js/ui/page.js
index cdb5e1d..3d0533b 100644
--- a/src/js/ui/page.js
+++ b/src/js/ui/page.js
@@ -272,8 +272,7 @@ Page.prototype = {
     },
 
     _getAnimationAnchorForNewThing : function(thing) {
-        let windowWidth = this._context.mainWindow.actor.width;
-        let windowHeight = this._context.mainWindow.actor.height;
+        let [windowWidth, windowHeight] = this._context.gtkWindow.get_size();
 
         let col = Math.floor(thing.actor.x / (windowWidth / _N_COLS_SLIDE_IN));
         let row = Math.floor(thing.actor.y / (windowHeight / _N_ROWS_SLIDE_IN));