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List:       kwin
Subject:    Fwd: Problem with QWidget->mapToGlobal()
From:       "Aaron J. Seigo" <aseigo () kde ! org>
Date:       2011-07-27 13:28:51
Message-ID: 15447026.acjamlNMbC () freedom
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this belongs on the kwin list :)

----------  Forwarded Message  ----------

Subject: Problem with QWidget->mapToGlobal()
Date: Tuesday, July 26, 2011, 09:34:57
From: Michael Jansen <kde@michael-jansen.biz>
To: kde-core-devel@kde.org

Hi

If i open the window menu (alt+f3) with the mouse the window shows up in the 
top left corner of my screen. The reason is that the following code from 
workspace/kwin/libkdecorations/kcommondecoration.cpp line 706

  QRect menuRect = m_button[MenuButton]->rect();
  QPoint menutop = m_button[MenuButton]->mapToGlobal(menuRect.topLeft());

  QPoint menubottom = m_button[MenuButton]->
	mapToGlobal(menuRect.bottomRight()) + QPoint(0, 2);

  KDecorationFactory* f = factory();
  showWindowMenu(QRect(menutop, menubottom));


The mapToGlobal() call is supposed to map the coordinates to screen 
coordinates as far i can see. But it does not do that. It always returns some 
small values like 

(gdb) p menubottom
$2 = {xp = 23, yp = 24}

I could even say always those values because it looks like the menu is always 
on the same spot.

I have a two screen setup here. That could be related.

Any ideas what is wrong here?

Mike

-----------------------------------------
-- 
Aaron J. Seigo
humru othro a kohnu se
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KDE core developer sponsored by Qt Development Frameworks

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