kwin/effects/presentwindows/presentwindows_proxy.cpp
Thomas Lübking 57f8c6d5f8 recreate presentwindows grids from desktopgrid
Theory:
----------
because PresentWindowsEffect::screenCountChanged() is shortcut
for "if (!isActive())", but the desktopgrid doesn't call
PresentWindowsEffect::setActive (or at least
PresentWindowsEffect::screenCountChanged), so the effect can
"miss" the increasing screen count change (it sees the signal,
but ignores it) and when desktopgrid calls it, it assumes the
m_gridSizes array is big enough (but it isn't)

Steps:
----------
1. effects are loaded, 1 screen present
2. 2nd screen gets added, but inactive effects ignore that
3. desktop grid gets activated, updates according to screen count,
   calls presentwindows for screen #2
4. presentwindows data is only prepared for one screen from step 1
   => BOOM

BUG: 351724
CCBUG: 326032
FIXED-IN: 5.4.2
REVIEW: 124960
2015-09-14 21:01:01 +02:00

47 lines
1.4 KiB
C++

/********************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 2009 Lucas Murray <lmurray@undefinedfire.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*********************************************************************/
#include "presentwindows_proxy.h"
#include "presentwindows.h"
namespace KWin
{
PresentWindowsEffectProxy::PresentWindowsEffectProxy(PresentWindowsEffect* effect)
: m_effect(effect)
{
}
PresentWindowsEffectProxy::~PresentWindowsEffectProxy()
{
}
void PresentWindowsEffectProxy::calculateWindowTransformations(EffectWindowList windows, int screen,
WindowMotionManager& manager)
{
return m_effect->calculateWindowTransformations(windows, screen, manager, true);
}
void PresentWindowsEffectProxy::reCreateGrids()
{
m_effect->reCreateGrids();
}
} // namespace