130 lines
3.9 KiB
C++
130 lines
3.9 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 Philip Falkner <philip.falkner@gmail.com>
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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 "fade.h"
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namespace KWin
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{
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KWIN_EFFECT( Fade, FadeEffect )
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FadeEffect::FadeEffect()
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: fade_in_speed( 20 )
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, fade_out_speed( 70 )
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{
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}
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void FadeEffect::prePaintWindow( EffectWindow* w, int* mask, QRegion* paint, QRegion* clip, int time )
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{
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if( windows.contains( w ))
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{
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if( windows[ w ].current < windows[ w ].target )
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{
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windows[ w ].current += time / double( 10000 / fade_in_speed ) * windows[ w ].step_mult;
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if( windows[ w ].current > windows[ w ].target )
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windows[ w ].current = windows[ w ].target;
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}
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else if( windows[ w ].current > windows[ w ].target )
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{
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windows[ w ].current -= time / double( 10000 / fade_out_speed ) * windows[ w ].step_mult;
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if( windows[ w ].current < windows[ w ].target )
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windows[ w ].current = windows[ w ].target;
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}
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if( !windows[ w ].isFading())
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{
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if( windows[ w ].deleted )
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{
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w->unrefWindow();
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windows.remove( w );
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}
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}
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else
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{
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*mask |= PAINT_WINDOW_TRANSLUCENT;
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*mask &= ~PAINT_WINDOW_OPAQUE;
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if( windows[ w ].deleted )
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w->enablePainting( EffectWindow::PAINT_DISABLED_BY_DELETE );
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}
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}
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effects->prePaintWindow( w, mask, paint, clip, time );
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}
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void FadeEffect::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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data.opacity = ( data.opacity + ( w->opacity() == 0.0 ? 1 : 0 )) * windows[ w ].current;
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effects->paintWindow( w, mask, region, data );
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}
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void FadeEffect::postPaintWindow( EffectWindow* w )
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{
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if( windows.contains( w ) && windows.value( w ).isFading())
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w->addRepaintFull(); // trigger next animation repaint
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effects->postPaintWindow( w );
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}
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void FadeEffect::windowOpacityChanged( EffectWindow* c, double old_opacity )
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{
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double new_opacity = c->opacity();
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if( !windows.contains( c ))
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windows[ c ].current = 1;
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if( new_opacity == 0.0 )
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{ // special case; if opacity is 0, we can't just multiply data.opacity
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windows[ c ].current = windows[ c ].current * ( old_opacity == 0.0 ? 1 : old_opacity );
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windows[ c ].target = 0;
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windows[ c ].step_mult = 1;
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}
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else
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{
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windows[ c ].current = ( windows[ c ].current * ( old_opacity == 0.0 ? 1 : old_opacity )) / new_opacity;
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windows[ c ].target = 1;
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windows[ c ].step_mult = 1 / new_opacity;
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}
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c->addRepaintFull();
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}
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void FadeEffect::windowAdded( EffectWindow* c )
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{
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if( !windows.contains( c ))
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windows[ c ].current = 0;
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if( c->opacity() == 0.0 )
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{
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windows[ c ].target = 0;
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windows[ c ].step_mult = 1;
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}
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else
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{
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windows[ c ].target = 1;
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windows[ c ].step_mult = 1 / c->opacity();
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}
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c->addRepaintFull();
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}
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void FadeEffect::windowClosed( EffectWindow* c )
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{
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if( !windows.contains( c ))
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windows[ c ].current = 1;
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if( c->opacity() == 0.0 )
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windows[ c ].step_mult = 1;
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else
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windows[ c ].step_mult = 1 / c->opacity();
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windows[ c ].target = 0;
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windows[ c ].deleted = true;
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c->addRepaintFull();
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c->refWindow();
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}
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void FadeEffect::windowDeleted( EffectWindow* c )
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{
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windows.remove( c );
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}
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} // namespace
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