From: Giovanni Campagna <gcampagna@src.gnome.org>
Date: Fri, 3 Aug 2012 22:14:34 +0000 (+0200)
Subject: ScreenShield: constrain vertical movement of the screen lock
X-Git-Tag: archive/raspbian/50.5-1+rpi1~1^2~1013^2^2~6181
X-Git-Url: https://dgit.raspbian.org/%22http://www.example.com/cgi/%22/%22http:/www.example.com/cgi/%22?a=commitdiff_plain;h=b53d18fe1cbf113b02e5b4f84b08102e83c31252;p=gnome-shell.git

ScreenShield: constrain vertical movement of the screen lock

Don't allow dragging the screen lock above and below the screen,
as in particular dragging below breaks the illusion of the curtain.

https://bugzilla.gnome.org/show_bug.cgi?id=681143
---

diff --git a/js/ui/screenShield.js b/js/ui/screenShield.js
index 11cc86adf..31355a6f7 100644
--- a/js/ui/screenShield.js
+++ b/js/ui/screenShield.js
@@ -310,7 +310,11 @@ const ScreenShield = new Lang.Class({
         this._arrow.connect('repaint', Lang.bind(this, this._drawArrow));
         this._lockScreenContents.add_actor(this._arrow);
 
-        let action = new Clutter.DragAction({ drag_axis: Clutter.DragAxis.Y_AXIS });
+        let dragArea = new Clutter.Rect({ origin: new Clutter.Point({ x: 0, y: -global.screen_height, }),
+                                          size: new Clutter.Size({ width: global.screen_width,
+                                                                   height: global.screen_height }) });
+        let action = new Clutter.DragAction({ drag_axis: Clutter.DragAxis.Y_AXIS,
+                                              drag_area: dragArea });
         action.connect('drag-begin', Lang.bind(this, this._onDragBegin));
         action.connect('drag-end', Lang.bind(this, this._onDragEnd));
         this._lockScreenGroup.add_action(action);