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