[gnome-shell] Fix overview sizing with multimonitor

[Giovanni Campagna <gcampagna src gnome org>]

commit 030e6aa507643d1b2b8771748b943cd4581830c8
Author: Giovanni Campagna <gcampagna src gnome org>
Date:   Sat Mar 2 00:00:59 2013 +0100

    Fix overview sizing with multimonitor
    
    Previously, the overview BoxLayout was sized and positioned explicitly
    using the primary monitor coordinates, as its parent was at 0,0 and
    with a fixed layout manager. Now we use a bin layout, so we need to
    position and size the stack actor, and set the overview boxlayout to
    expand.
    Take also the occasion to use a MonitorConstraint instead of handling
    position and size manually.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=694969

 js/ui/overview.js |   10 +++++-----
 1 files changed, 5 insertions(+), 5 deletions(-)
---
diff --git a/js/ui/overview.js b/js/ui/overview.js
index 3ee87fa..6f23608 100644
--- a/js/ui/overview.js
+++ b/js/ui/overview.js
@@ -13,6 +13,7 @@ const Gdk = imports.gi.Gdk;
 const Background = imports.ui.background;
 const Dash = imports.ui.dash;
 const DND = imports.ui.dnd;
+const LayoutManager = imports.ui.layout;
 const Main = imports.ui.main;
 const MessageTray = imports.ui.messageTray;
 const OverviewControls = imports.ui.overviewControls;
@@ -120,13 +121,16 @@ const Overview = new Lang.Class({
 
         let layout = new Clutter.BinLayout();
         this._stack = new Clutter.Actor({ layout_manager: layout });
+        this._stack.add_constraint(new LayoutManager.MonitorConstraint({ primary: true }));
 
         /* Translators: This is the main view to select
            activities. See also note for "Activities" string. */
         this._overview = new St.BoxLayout({ name: 'overview',
                                             accessible_name: _("Overview"),
                                             reactive: true,
-                                            vertical: true });
+                                            vertical: true,
+                                            x_expand: true,
+                                            y_expand: true });
         this._overview._delegate = this;
 
         this._groupStack = new St.Widget({ layout_manager: new Clutter.BinLayout(),
@@ -442,12 +446,8 @@ const Overview = new Lang.Class({
         // when it is next shown.
         this.hide();
 
-        let primary = Main.layoutManager.primaryMonitor;
         let workArea = Main.layoutManager.getWorkAreaForMonitor(Main.layoutManager.primaryIndex);
 
-        this._overview.set_position(primary.x, primary.y);
-        this._overview.set_size(primary.width, primary.height);
-
         this._coverPane.set_position(0, workArea.y);
         this._coverPane.set_size(workArea.width, workArea.height);