[gnome-shell/screen-shield-next: 3/9] ScreenShield: when explicitly locking, tween the shield from the top

[Giovanni Campagna <gcampagna src gnome org>]

commit 29958df7e7e42eb2070fb2691a726739c987322d
Author: Giovanni Campagna <gcampagna src gnome org>
Date:   Fri Aug 3 19:42:43 2012 +0200

    ScreenShield: when explicitly locking, tween the shield from the top
    
    The curtain should appear to be an overlay on top of the system,
    and since it is lifted by dragging up, it makes sense to slide it
    down on lock.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=681143

 js/ui/screenShield.js |   23 ++++++++++++-----------
 1 files changed, 12 insertions(+), 11 deletions(-)
---
diff --git a/js/ui/screenShield.js b/js/ui/screenShield.js
index 38ac04b..2a1b9ec 100644
--- a/js/ui/screenShield.js
+++ b/js/ui/screenShield.js
@@ -17,7 +17,7 @@ const Tweener = imports.ui.tweener;
 const SCREENSAVER_SCHEMA = 'org.gnome.desktop.screensaver';
 const LOCK_ENABLED_KEY = 'lock-enabled';
 
-const CURTAIN_SLIDE_TIME = 1.2;
+const CURTAIN_SLIDE_TIME = 0.8;
 // fraction of screen height the arrow must reach before completing
 // the slide up automatically
 const ARROW_DRAG_TRESHOLD = 0.1;
@@ -28,7 +28,7 @@ const SUMMARY_ICON_SIZE = 48;
 // STANDARD_FADE_TIME is used when the session goes idle, while
 // SHORT_FADE_TIME is used when requesting lock explicitly from the user menu
 const STANDARD_FADE_TIME = 10;
-const SHORT_FADE_TIME = 2;
+const SHORT_FADE_TIME = 0.8;
 
 const Clock = new Lang.Class({
     Name: 'ScreenShieldClock',
@@ -474,26 +474,27 @@ const ScreenShield = new Lang.Class({
     },
 
     _resetLockScreen: function(animate) {
+        this._lockScreenGroup.show();
+        this._arrow.show();
+
         if (animate) {
-            this.actor.opacity = 0;
-            Tweener.removeTweens(this.actor);
-            Tweener.addTween(this.actor,
-                             { opacity: 255,
+            this._lockScreenGroup.y = -global.screen_height;
+            Tweener.removeTweens(this._lockScreenGroup);
+            Tweener.addTween(this._lockScreenGroup,
+                             { y: 0,
                                time: SHORT_FADE_TIME,
-                               transition: 'easeOutQuad',
+                               transition: 'linear',
                                onComplete: function() {
+                                   this._lockScreenGroup.fixed_position_set = false;
                                    this.emit('lock-screen-shown');
                                },
                                onCompleteScope: this
                              });
         } else {
+            this._lockScreenGroup.fixed_position_set = false;
             this.emit('lock-screen-shown');
         }
 
-        this._lockScreenGroup.fixed_position_set = false;
-        this._lockScreenGroup.show();
-        this._arrow.show();
-
         this._lockScreenGroup.grab_key_focus();
     },