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80 lines
2.3 KiB
80 lines
2.3 KiB
/***************************************************************** |
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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 "shadow.h" |
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#include <kwinglutils.h> |
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namespace KWin |
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{ |
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KWIN_EFFECT( Shadow, ShadowEffect ) |
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ShadowEffect::ShadowEffect() |
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: shadowXOffset( 10 ) |
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, shadowYOffset( 10 ) |
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{ |
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} |
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void ShadowEffect::prePaintWindow( EffectWindow* w, int* mask, QRegion* paint, QRegion* clip, int time ) |
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{ |
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*mask |= PAINT_WINDOW_TRANSLUCENT; |
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*paint |= ( QRegion( w->geometry()) & *paint ).translated( shadowXOffset, shadowYOffset ); |
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effects->prePaintWindow( w, mask, paint, clip, time ); |
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} |
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void ShadowEffect::paintWindow( EffectWindow* w, int mask, QRegion region, WindowPaintData& data ) |
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{ |
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if( !w->isDeleted() ) |
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drawShadow( w, mask, region, data ); |
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effects->paintWindow( w, mask, region, data ); |
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} |
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void ShadowEffect::postPaintWindow( EffectWindow* w ) |
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{ |
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effects->postPaintWindow( w ); |
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} |
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QRect ShadowEffect::transformWindowDamage( EffectWindow* w, const QRect& r ) |
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{ |
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QRect r2 = r | r.translated( shadowXOffset, shadowYOffset ); |
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return effects->transformWindowDamage( w, r2 ); |
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} |
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void ShadowEffect::drawShadow( EffectWindow* w, int mask, QRegion region, WindowPaintData& data ) |
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{ |
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if(( mask & PAINT_WINDOW_TRANSLUCENT ) == 0 ) |
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return; |
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glPushAttrib( GL_CURRENT_BIT | GL_ENABLE_BIT ); |
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glEnable( GL_BLEND ); |
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glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ); |
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glColor4f( 0, 0, 0, 0.2 * data.opacity ); // black |
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glPushMatrix(); |
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if( mask & PAINT_WINDOW_TRANSFORMED ) |
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glTranslatef( data.xTranslate, data.yTranslate, 0 ); |
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glTranslatef( w->x() + shadowXOffset, w->y() + shadowYOffset, 0 ); |
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if(( mask & PAINT_WINDOW_TRANSFORMED ) && ( data.xScale != 1 || data.yScale != 1 )) |
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glScalef( data.xScale, data.yScale, 1 ); |
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const float verts[ 4 * 2 ] = |
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{ |
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0, 0, |
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0, w->height(), |
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w->width(), w->height(), |
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w->width(), 0 |
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}; |
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renderGLGeometry( mask, region, verts, NULL, 4 ); |
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glPopMatrix(); |
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glPopAttrib(); |
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} |
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} // namespace
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