kwin/effects/demo_shakymove.cpp

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/*****************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 2006 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 "demo_shakymove.h"
namespace KWin
{
KWIN_EFFECT( demo_shakymove, ShakyMoveEffect )
ShakyMoveEffect::ShakyMoveEffect()
{
connect( &timer, SIGNAL( timeout()), SLOT( tick()));
}
static const int shaky_diff[] = { 0, 1, 2, 3, 2, 1, 0, -1, -2, -3, -2, -1 };
static const int SHAKY_MAX = sizeof( shaky_diff ) / sizeof( shaky_diff[ 0 ] );
void ShakyMoveEffect::prePaintScreen( ScreenPrePaintData& data, int time )
{
if( !windows.isEmpty())
data.mask |= PAINT_SCREEN_WITH_TRANSFORMED_WINDOWS;
effects->prePaintScreen( data, time );
}
void ShakyMoveEffect::prePaintWindow( EffectWindow* w, WindowPrePaintData& data, int time )
{
if( windows.contains( w ))
data.setTransformed();
effects->prePaintWindow( w, data, time );
}
void ShakyMoveEffect::paintWindow( EffectWindow* w, int mask, QRegion region, WindowPaintData& data )
{
if( windows.contains( w ))
data.xTranslate += shaky_diff[ windows[ w ]];
effects->paintWindow( w, mask, region, data );
}
void ShakyMoveEffect::windowUserMovedResized( EffectWindow* c, bool first, bool last )
{
if( first )
{
if( windows.isEmpty())
timer.start( 50 );
windows[ c ] = 0;
}
else if( last )
{
windows.remove( c );
// just repaint whole screen, transformation is involved
effects->addRepaintFull();
if( windows.isEmpty())
timer.stop();
}
}
void ShakyMoveEffect::windowClosed( EffectWindow* c )
{
windows.remove( c );
if( windows.isEmpty())
timer.stop();
}
// TODO use time provided with prePaintWindow() instead
void ShakyMoveEffect::tick()
{
for( QHash< const EffectWindow*, int >::Iterator it = windows.begin();
it != windows.end();
++it )
{
if( *it == SHAKY_MAX - 1 )
*it = 0;
else
++(*it);
// just repaint whole screen, transformation is involved
effects->addRepaintFull();
}
}
} // namespace
#include "demo_shakymove.moc"