kwin/effects/drunken.cpp
Rivo Laks 7273d0ddb5 Add setTransformed() helper method
svn path=/trunk/KDE/kdebase/workspace/; revision=689913
2007-07-19 14:05:59 +00:00

77 lines
2 KiB
C++

/*****************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 2007 Lubos Lunak <l.lunak@kde.org>
You can Freely distribute this program under the GNU General Public
License. See the file "COPYING" for the exact licensing terms.
******************************************************************/
#include "drunken.h"
#include <math.h>
namespace KWin
{
KWIN_EFFECT( drunken, DrunkenEffect )
void DrunkenEffect::prePaintScreen( ScreenPrePaintData& data, int time )
{
if( !windows.isEmpty())
data.mask |= PAINT_SCREEN_WITH_TRANSFORMED_WINDOWS;
effects->prePaintScreen( data, time );
}
void DrunkenEffect::prePaintWindow( EffectWindow* w, WindowPrePaintData& data, int time )
{
if( windows.contains( w ))
{
windows[ w ] += time / 1000.;
if( windows[ w ] < 1 )
data.setTransformed();
else
windows.remove( w );
}
effects->prePaintWindow( w, data, time );
}
void DrunkenEffect::paintWindow( EffectWindow* w, int mask, QRegion region, WindowPaintData& data )
{
if( !windows.contains( w ))
{
effects->paintWindow( w, mask, region, data );
return;
}
WindowPaintData d1 = data;
// 4 cycles, decreasing amplitude
int diff = int( sin( windows[ w ] * 8 * M_PI ) * ( 1 - windows[ w ] ) * 10 );
d1.xTranslate -= diff;
d1.opacity *= 0.5;
effects->paintWindow( w, mask, region, d1 );
WindowPaintData d2 = data;
d2.xTranslate += diff;
d2.opacity *= 0.5;
effects->paintWindow( w, mask, region, d2 );
}
void DrunkenEffect::postPaintWindow( EffectWindow* w )
{
if( windows.contains( w ))
w->addRepaintFull();
effects->postPaintWindow( w );
}
void DrunkenEffect::windowAdded( EffectWindow* w )
{
windows[ w ] = 0;
w->addRepaintFull();
}
void DrunkenEffect::windowClosed( EffectWindow* w )
{
windows.remove( w );
}
} // namespace