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Make window blur effect opacity dependent. Patch by premierSullivan gmail com.

Browse source 
BUG: 162046

svn path=/trunk/KDE/kdebase/workspace/; revision=840209
This commit is contained in:
Lucas Murray 2008-07-31 16:36:24 +00:00
parent dcdc18a7bd
commit 2fab51a8b2
2 changed files with 25 additions and 10 deletions
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31
effects/blur.cpp
View file

@ -246,6 +246,21 @@ void BlurEffect::drawWindow( EffectWindow* w, int mask, QRegion region, WindowPa
if( mask & PAINT_WINDOW_TRANSLUCENT &&
(data.opacity != 1.0 || data.contents_opacity != 1.0 || data.decoration_opacity != 1.0 ))
{
double blurAmount = data.opacity;
if( blurAmount >= 1.0 )
{
blurAmount = data.contents_opacity;
if( blurAmount >= 1.0 )
{
blurAmount = data.decoration_opacity;
if( blurAmount >= 1.0 )
blurAmount = 1.0;
}
}
// Round to nearest 0.05
blurAmount = double( qRound( blurAmount * 20.0 )) / 20.0;
// Make sure the blur texture is up to date
if( mask & PAINT_SCREEN_TRANSFORMED )
{
@ -258,9 +273,9 @@ void BlurEffect::drawWindow( EffectWindow* w, int mask, QRegion region, WindowPa
// transformed position on the screen and thus have to update the
// entire screen
if( mask & ( PAINT_WINDOW_TRANSFORMED | PAINT_SCREEN_TRANSFORMED | PAINT_SCREEN_WITH_TRANSFORMED_WINDOWS ) )
updateBlurTexture( QRegion(0, 0, displayWidth(), displayHeight()) );
updateBlurTexture( QRegion(0, 0, displayWidth(), displayHeight()) , blurAmount );
else
updateBlurTexture( mBlurDirty );
updateBlurTexture( mBlurDirty , blurAmount );
mBlurDirty = QRegion();
if( mask & PAINT_SCREEN_TRANSFORMED )
// Restore the original matrix
@ -298,7 +313,7 @@ void BlurEffect::drawWindow( EffectWindow* w, int mask, QRegion region, WindowPa
effects->drawWindow( w, mask, region, data );
}
void BlurEffect::updateBlurTexture(const QRegion& region)
void BlurEffect::updateBlurTexture(const QRegion& region, double blurAmount )
{
QRect bounding = region.boundingRect();
QVector<QRect> rects = region.rects();
@ -308,24 +323,24 @@ void BlurEffect::updateBlurTexture(const QRegion& region)
if( (int)(totalarea * 1.33 + 100 ) < bounding.width() * bounding.height() )
{
// Use small rects
updateBlurTexture(rects);
updateBlurTexture(rects, blurAmount);
}
else
{
// Bounding rect is probably cheaper
QVector<QRect> tmp( 1, bounding );
updateBlurTexture( tmp );
updateBlurTexture( tmp , blurAmount );
}
}
void BlurEffect::updateBlurTexture(const QVector<QRect>& rects)
void BlurEffect::updateBlurTexture(const QVector<QRect>& rects, double blurAmount )
{
// Blur
// First pass (vertical)
mBlurShader->bind();
effects->pushRenderTarget(mTmpTarget);
mBlurShader->setAttribute("xBlur", 0.0f);
mBlurShader->setAttribute("yBlur", 1.0f);
mBlurShader->setAttribute("yBlur", float(blurAmount) );
mSceneTexture->bind();
@ -349,7 +364,7 @@ void BlurEffect::updateBlurTexture(const QVector<QRect>& rects)
// Second pass (horizontal)
effects->pushRenderTarget(mBlurTarget);
mBlurShader->setAttribute("xBlur", 1.0f);
mBlurShader->setAttribute("xBlur", float(blurAmount) );
mBlurShader->setAttribute("yBlur", 0.0f);
mTmpTexture->bind();

4
effects/blur.h
View file

@ -56,8 +56,8 @@ class BlurEffect : public Effect
protected:
bool loadData();
GLShader* loadShader(const QString& name);
void updateBlurTexture(const QVector<QRect>& rects);
void updateBlurTexture(const QRegion& region);
void updateBlurTexture(const QVector<QRect>& rects, double blurAmount );
void updateBlurTexture(const QRegion& region , double blurAmount );
QRegion expandedRegion( const QRegion& r ) const;