[gnome-shell] Fix positioning of panel on startup

[Alexander Larsson <alexl src gnome org>]

commit b1654af406327290ed3b9ef9fce39b51230e4e16
Author: Alexander Larsson <alexl redhat com>
Date:   Thu Feb 24 11:21:30 2011 +0100

    Fix positioning of panel on startup
    
    We need to do the initial relayout before we start up the startup
    animation, and the startup animation can't hardcode the position
    of the panel to zero.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=642881

 js/ui/main.js  |    6 +++---
 js/ui/panel.js |    5 +++--
 2 files changed, 6 insertions(+), 5 deletions(-)
---
diff --git a/js/ui/main.js b/js/ui/main.js
index a798414..3d3d87c 100644
--- a/js/ui/main.js
+++ b/js/ui/main.js
@@ -196,6 +196,9 @@ function start() {
     ExtensionSystem.init();
     ExtensionSystem.loadExtensions();
 
+    // Perform initial relayout here
+    _relayout();
+
     panel.startStatusArea();
     panel.startupAnimation();
 
@@ -204,9 +207,6 @@ function start() {
 
     global.stage.connect('captured-event', _globalKeyPressHandler);
 
-    // Perform initial relayout here
-    _relayout();
-
     _log('info', 'loaded at ' + _startDate);
     log('GNOME Shell started at ' + _startDate);
 
diff --git a/js/ui/panel.js b/js/ui/panel.js
index 92272df..1d1e10d 100644
--- a/js/ui/panel.js
+++ b/js/ui/panel.js
@@ -1042,9 +1042,10 @@ Panel.prototype = {
     },
 
     startupAnimation: function() {
-        this.actor.y = -this.actor.height;
+        let oldY = this.actor.y;
+        this.actor.y = oldY - this.actor.height;
         Tweener.addTween(this.actor,
-                         { y: 0,
+                         { y: oldY,
                            time: 0.2,
                            transition: 'easeOutQuad'
                          });