From: Carlos Garnacho <carlosg@gnome.org>
Date: Wed, 25 Jun 2014 15:53:37 +0000 (+0200)
Subject: backgroundMenu: Release the click gesture if a grab operation begun
X-Git-Tag: archive/raspbian/50.5-1+rpi1~1^2~1013^2^2~2352
X-Git-Url: https://dgit.raspbian.org/%22http://www.example.com/cgi/%22/%22http:/www.example.com/cgi/%22?a=commitdiff_plain;h=1ea2e2bcab50b3ac8648db410eba5d368de7c40b;p=gnome-shell.git

backgroundMenu: Release the click gesture if a grab operation begun

If an active grab on pointer events happens during multi-touch operations,
all non-pointer-emulating touches will be muted. This may leave the
Clutter.ClickAction incomplete if triggered by one of those sequences,
just to have a gesture take over and trigger a compositor grab, which would
leave the capture-event handler stuck eating events.

So listen for grab-op-begin from the display, and ensure the action is
released if such grab begins.
and the capture event handler stuck.
---

diff --git a/js/ui/backgroundMenu.js b/js/ui/backgroundMenu.js
index b3dec1ce2..d9341f576 100644
--- a/js/ui/backgroundMenu.js
+++ b/js/ui/backgroundMenu.js
@@ -55,9 +55,14 @@ function addBackgroundMenu(actor, layoutManager) {
     });
     actor.add_action(clickAction);
 
+    let grabOpBeginId = global.display.connect('grab-op-begin', function () {
+        clickAction.release();
+    });
+
     actor.connect('destroy', function() {
         actor._backgroundMenu.destroy();
         actor._backgroundMenu = null;
         actor._backgroundManager = null;
+        global.display.disconnect(grabOpBeginId);
     });
 }