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[Bug 805874] Re: Nux spuriously starts a new drag (calls StartDragAsSource) when there are no buttons down at all

To: touch-packages@xxxxxxxxxxxxxxxxxxx
From: Marco Trevisan (Treviño) <mail@xxxxxxxxx>
Date: Thu, 24 Jul 2014 21:56:26 -0000
Reply-to: Bug 805874 <805874@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

** Changed in: unity (Ubuntu)
       Status: New => Fix Released

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https://bugs.launchpad.net/bugs/805874

Title:
  Nux spuriously starts a new drag (calls StartDragAsSource) when there
  are no buttons down at all

Status in Nux:
  Fix Released
Status in Unity:
  Fix Released
Status in “nux” package in Ubuntu:
  Fix Released
Status in “unity” package in Ubuntu:
  Fix Released

Bug description:
  In my current work in progress for bug 773892, I found Nux sometimes
  starts a new drag when absolutely no mouse buttons are being held
  down.

  The cause of this bug seems to be Nux/InputArea.cpp at:
        else if ((event_processor_state & AREA_MOUSE_STATUS_MOVE) && (event_processor_state & AREA_MOUSE_STATUS_FOCUS))

  The bit AREA_MOUSE_STATUS_FOCUS seems to remain set often even when no
  mouse buttons are held down.

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