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Add soft shadows

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svn path=/trunk/KDE/kdebase/workspace/; revision=675488
This commit is contained in:
Rivo Laks 2007-06-14 11:00:22 +00:00
parent 65bc41c518
commit 7812443973
4 changed files with 46 additions and 11 deletions
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44
effects/shadow.cpp
View file

@ -25,6 +25,7 @@ ShadowEffect::ShadowEffect()
shadowXOffset = conf.readEntry( "XOffset", 5 );
shadowYOffset = conf.readEntry( "YOffset", 5 );
shadowOpacity = (float)conf.readEntry( "Opacity", 0.2 );
shadowFuzzyness = conf.readEntry( "Fuzzyness", 10 );
}
void ShadowEffect::prePaintWindow( EffectWindow* w, int* mask, QRegion* paint, QRegion* clip, int time )
@ -48,34 +49,57 @@ void ShadowEffect::postPaintWindow( EffectWindow* w )
QRect ShadowEffect::transformWindowDamage( EffectWindow* w, const QRect& r )
{
QRect r2 = r | r.translated( shadowXOffset, shadowYOffset );
QRect r2 = r | r.adjusted( shadowXOffset - shadowFuzzyness, shadowYOffset - shadowFuzzyness,
shadowXOffset + shadowFuzzyness, shadowYOffset + shadowFuzzyness);
return effects->transformWindowDamage( w, r2 );
}
void ShadowEffect::drawShadow( EffectWindow* w, int mask, QRegion region, WindowPaintData& data )
void ShadowEffect::drawShadow( EffectWindow* window, int mask, QRegion region, WindowPaintData& data )
{
if(( mask & PAINT_WINDOW_TRANSLUCENT ) == 0 )
return;
glPushAttrib( GL_CURRENT_BIT | GL_ENABLE_BIT );
glEnable( GL_BLEND );
glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
glColor4f( 0, 0, 0, shadowOpacity * data.opacity ); // black
glPushMatrix();
if( mask & PAINT_WINDOW_TRANSFORMED )
glTranslatef( data.xTranslate, data.yTranslate, 0 );
glTranslatef( w->x() + shadowXOffset, w->y() + shadowYOffset, 0 );
glTranslatef( window->x() + shadowXOffset, window->y() + shadowYOffset, 0 );
if(( mask & PAINT_WINDOW_TRANSFORMED ) && ( data.xScale != 1 || data.yScale != 1 ))
glScalef( data.xScale, data.yScale, 1 );
const float verts[ 4 * 2 ] =
int w = window->width();
int h = window->height();
int fuzzy = shadowFuzzyness;
const float verts[ 5 * 4 * 2 ] =
{
0, 0,
0, w->height(),
w->width(), w->height(),
w->width(), 0
// center piece (100% opacity)
0 + fuzzy, 0 + fuzzy, 0 + fuzzy, h - fuzzy, w - fuzzy, h - fuzzy, w - fuzzy, 0 + fuzzy,
// left
0 - fuzzy, 0 - fuzzy, 0 - fuzzy, h + fuzzy, 0 + fuzzy, h - fuzzy, 0 + fuzzy, 0 + fuzzy,
// top
0 - fuzzy, 0 - fuzzy, 0 + fuzzy, 0 + fuzzy, w - fuzzy, 0 + fuzzy, w + fuzzy, 0 - fuzzy,
// right piece
w - fuzzy, 0 + fuzzy, w - fuzzy, h - fuzzy, w + fuzzy, h + fuzzy, w + fuzzy, 0 - fuzzy,
// bottom
0 + fuzzy, h - fuzzy, 0 - fuzzy, h + fuzzy, w + fuzzy, h + fuzzy, w - fuzzy, h - fuzzy,
};
renderGLGeometry( mask, region, 4, verts );
float opacity = shadowOpacity * data.opacity;
const float colors[ 5 * 4 * 4 ] =
{
// center
0, 0, 0, opacity, 0, 0, 0, opacity, 0, 0, 0, opacity, 0, 0, 0, opacity,
// left
0, 0, 0, 0 , 0, 0, 0, 0 , 0, 0, 0, opacity, 0, 0, 0, opacity,
// top
0, 0, 0, 0 , 0, 0, 0, opacity, 0, 0, 0, opacity, 0, 0, 0, 0 ,
// right
0, 0, 0, opacity, 0, 0, 0, opacity, 0, 0, 0, 0 , 0, 0, 0, 0 ,
// bottom
0, 0, 0, opacity, 0, 0, 0, 0 , 0, 0, 0, 0 , 0, 0, 0, opacity,
};
renderGLGeometry( mask, region, 5 * 4, verts, 0, colors );
glPopMatrix();
glPopAttrib();

1
effects/shadow.h
View file

@ -29,6 +29,7 @@ class ShadowEffect
void drawShadow( EffectWindow* w, int mask, QRegion region, WindowPaintData& data );
int shadowXOffset, shadowYOffset;
float shadowOpacity;
int shadowFuzzyness;
};
} // namespace

11
effects/shadow_config.cpp
View file

@ -52,7 +52,13 @@ ShadowEffectConfig::ShadowEffectConfig(QWidget* parent, const QStringList& args)
connect(mShadowOpacity, SIGNAL(valueChanged(int)), this, SLOT(changed()));
layout->addWidget(mShadowOpacity, 2, 1);
layout->addItem(new QSpacerItem(10, 10, QSizePolicy::Minimum, QSizePolicy::Expanding), 3, 0, 1, 2);
layout->addWidget(new QLabel(i18n("Shadow fuzzyness:")), 3, 0);
mShadowFuzzyness = new QSpinBox;
mShadowFuzzyness->setRange(0, 20);
connect(mShadowFuzzyness, SIGNAL(valueChanged(int)), this, SLOT(changed()));
layout->addWidget(mShadowFuzzyness, 3, 1);
layout->addItem(new QSpacerItem(10, 10, QSizePolicy::Minimum, QSizePolicy::Expanding), 4, 0, 1, 2);
load();
}
@ -71,6 +77,7 @@ void ShadowEffectConfig::load()
mShadowXOffset->setValue( conf.readEntry( "XOffset", 5 ) );
mShadowYOffset->setValue( conf.readEntry( "YOffset", 5 ) );
mShadowOpacity->setValue( (int)( conf.readEntry( "Opacity", 0.2 ) * 100 ) );
mShadowFuzzyness->setValue( conf.readEntry( "Fuzzyness", 10 ) );
emit changed(false);
}
@ -84,6 +91,7 @@ void ShadowEffectConfig::save()
conf.writeEntry( "XOffset", mShadowXOffset->value() );
conf.writeEntry( "YOffset", mShadowYOffset->value() );
conf.writeEntry( "Opacity", mShadowOpacity->value() / 100.0 );
conf.writeEntry( "Fuzzyness", mShadowFuzzyness->value() );
conf.sync();
emit changed(false);
@ -96,6 +104,7 @@ void ShadowEffectConfig::defaults()
mShadowXOffset->setValue( 5 );
mShadowYOffset->setValue( 5 );
mShadowOpacity->setValue( 20 );
mShadowFuzzyness->setValue( 10 );
emit changed(true);
}

1
effects/shadow_config.h
View file

@ -34,6 +34,7 @@ class ShadowEffectConfig : public KCModule
QSpinBox* mShadowXOffset;
QSpinBox* mShadowYOffset;
QSpinBox* mShadowOpacity;
QSpinBox* mShadowFuzzyness;
};
} // namespace