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Optimized button rendering.

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svn path=/trunk/KDE/kdebase/workspace/; revision=1198423
This commit is contained in:
Hugo Pereira Da Costa 2010-11-18 11:22:17 +00:00
parent 5f5e628c2b
commit 5e3f71614e
1 changed files with 16 additions and 15 deletions
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31
clients/oxygen/oxygendecohelper.cpp
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@ -50,16 +50,16 @@ namespace Oxygen
//______________________________________________________________________________
QPixmap DecoHelper::windecoButton(const QColor &color, bool pressed, int size)
{
quint64 key = (quint64(color.rgba()) << 32) | (size << 1) | (int)pressed;
QPixmap *pixmap = m_windecoButtonCache.object(key);
const quint64 key( (quint64(color.rgba()) << 32) | (size << 1) | (int)pressed );
QPixmap *pixmap( m_windecoButtonCache.object(key) );
if( !pixmap )
{
pixmap = new QPixmap(size, size);
pixmap->fill(Qt::transparent);
QColor light = calcLightColor(color);
QColor dark = calcDarkColor(color);
const QColor light( calcLightColor(color) );
const QColor dark( calcDarkColor(color) );
QPainter p( pixmap );
p.setRenderHints(QPainter::Antialiasing);
@ -79,19 +79,20 @@ namespace Oxygen
lg.setColorAt( 1, dark );
}
QRectF r( u*0.5*(17-12.33), u*1.665, u*12.33, u*12.33 );
const QRectF r( u*0.5*(17-12.33), u*1.665, u*12.33, u*12.33 );
p.setBrush( lg );
p.drawEllipse( r );
}
{
// outline circle
qreal penWidth = 0.7;
const qreal penWidth( 0.7 );
QLinearGradient lg( 0, u*1.665, 0, u*(2.0*12.33+1.665) );
lg.setColorAt( 0, light );
lg.setColorAt( 1, dark );
QRectF r( u*0.5*(17-12.33+penWidth), u*(1.665+penWidth), u*(12.33-penWidth), u*(12.33-penWidth) );
const QRectF r( u*0.5*(17-12.33+penWidth), u*(1.665+penWidth), u*(12.33-penWidth), u*(12.33-penWidth) );
p.setPen( QPen( lg, penWidth*u ) );
p.setBrush( Qt::NoBrush );
p.drawEllipse( r );
p.end();
}
@ -105,8 +106,8 @@ namespace Oxygen
//_______________________________________________________________________
QPixmap DecoHelper::windecoButtonGlow(const QColor &color, int size)
{
quint64 key = (quint64(color.rgba()) << 32) | size;
QPixmap *pixmap = m_windecoButtonGlowCache.object(key);
const quint64 key( (quint64(color.rgba()) << 32) | size );
QPixmap *pixmap( m_windecoButtonGlowCache.object(key) );
if( !pixmap )
{
@ -114,8 +115,8 @@ namespace Oxygen
pixmap->fill(Qt::transparent);
// right now the same color is used for the two shadows
QColor light = color;
QColor dark = color;
const QColor& light( color );
const QColor& dark( color );
QPainter p(pixmap);
p.setRenderHints(QPainter::Antialiasing);
@ -129,8 +130,8 @@ namespace Oxygen
QRadialGradient rg( u*8.5, u*8.5, u*8.5 );
int nPoints = 5;
qreal x[5] = { 0.61, 0.72, 0.81, 0.9, 1};
qreal values[5] = { 255-172, 255-178, 255-210, 255-250, 0 };
const qreal x[5] = { 0.61, 0.72, 0.81, 0.9, 1};
const qreal values[5] = { 255-172, 255-178, 255-210, 255-250, 0 };
QColor c = dark;
for( int i = 0; i<nPoints; i++ )
{ c.setAlpha( values[i] ); rg.setColorAt( x[i], c ); }
@ -145,8 +146,8 @@ namespace Oxygen
QRadialGradient rg( u*8.5, u*8.5, u*8.5 );
static int nPoints = 6;
qreal x[6] = { 0.61, 0.67, 0.7, 0.74, 0.78, 1 };
qreal values[6] = { 255-92, 255-100, 255-135, 255-205, 255-250, 0 };
const qreal x[6] = { 0.61, 0.67, 0.7, 0.74, 0.78, 1 };
const qreal values[6] = { 255-92, 255-100, 255-135, 255-205, 255-250, 0 };
QColor c = light;
for( int i = 0; i<nPoints; i++ )
{ c.setAlpha( values[i] ); rg.setColorAt( x[i], c ); }