/*!
\reimp
*/
void QGraphicsColorizeEffect::draw(QPainter *painter)
{
Q_D(QGraphicsColorizeEffect);
if (!d->opaque) {
drawSource(painter);
return;
}
QPoint offset;
if (sourceIsPixmap()) {
// No point in drawing in device coordinates (pixmap will be scaled anyways).
const QPixmap pixmap = sourcePixmap(Qt::LogicalCoordinates, &offset, NoPad);
if (!pixmap.isNull())
d->filter->draw(painter, offset, pixmap);
return;
}
// Draw pixmap in deviceCoordinates to avoid pixmap scaling.
const QPixmap pixmap = sourcePixmap(Qt::DeviceCoordinates, &offset);
if (pixmap.isNull())
return;
QTransform restoreTransform = painter->worldTransform();
painter->setWorldTransform(QTransform());
d->filter->draw(painter, offset, pixmap);
painter->setWorldTransform(restoreTransform);
}
void QgsComposerEffect::draw( QPainter *painter )
{
QPoint offset;
QPixmap pixmap;
// Set desired composition mode then draw source
painter->setCompositionMode( mCompositionMode );
if ( mCompositionMode == QPainter::CompositionMode_SourceOver )
{
// Normal (sourceover) blending, do faster drawSource operation
drawSource( painter );
return;
}
// Otherwise, draw using pixmap so QPrinter output works as expected
if ( sourceIsPixmap() )
{
// No point in drawing in device coordinates (pixmap will be scaled anyways).
pixmap = sourcePixmap( Qt::LogicalCoordinates, &offset );
}
else
{
// Draw pixmap in device coordinates to avoid pixmap scaling;
pixmap = sourcePixmap( Qt::DeviceCoordinates, &offset );
painter->setWorldTransform( QTransform() );
}
painter->drawPixmap( offset, pixmap );
}
/*!
\reimp
*/
void QGraphicsOpacityEffect::draw(QPainter *painter)
{
Q_D(QGraphicsOpacityEffect);
// Transparent; nothing to draw.
if (d->isFullyTransparent)
return;
// Opaque; draw directly without going through a pixmap.
if (d->isFullyOpaque && !d->hasOpacityMask) {
drawSource(painter);
return;
}
QPoint offset;
Qt::CoordinateSystem system = sourceIsPixmap() ? Qt::LogicalCoordinates : Qt::DeviceCoordinates;
QPixmap pixmap = sourcePixmap(system, &offset, QGraphicsEffect::NoPad);
if (pixmap.isNull())
return;
painter->save();
painter->setOpacity(d->opacity);
if (d->hasOpacityMask) {
QPainter pixmapPainter(&pixmap);
pixmapPainter.setRenderHints(painter->renderHints());
pixmapPainter.setCompositionMode(QPainter::CompositionMode_DestinationIn);
if (system == Qt::DeviceCoordinates) {
QTransform worldTransform = painter->worldTransform();
worldTransform *= QTransform::fromTranslate(-offset.x(), -offset.y());
pixmapPainter.setWorldTransform(worldTransform);
pixmapPainter.fillRect(sourceBoundingRect(), d->opacityMask);
} else {
pixmapPainter.translate(-offset);
pixmapPainter.fillRect(pixmap.rect(), d->opacityMask);
}
}
if (system == Qt::DeviceCoordinates)
painter->setWorldTransform(QTransform());
painter->drawPixmap(offset, pixmap);
painter->restore();
}
