diff options
Diffstat (limited to 'src/gui/effects/qgraphicseffect.cpp')
-rw-r--r-- | src/gui/effects/qgraphicseffect.cpp | 72 |
1 files changed, 21 insertions, 51 deletions
diff --git a/src/gui/effects/qgraphicseffect.cpp b/src/gui/effects/qgraphicseffect.cpp index 3b94a5d..83f4f79 100644 --- a/src/gui/effects/qgraphicseffect.cpp +++ b/src/gui/effects/qgraphicseffect.cpp @@ -1092,66 +1092,36 @@ void QGraphicsOpacityEffect::draw(QPainter *painter, QGraphicsEffectSource *sour return; } - painter->save(); - painter->setOpacity(d->opacity); QPoint offset; - if (source->isPixmap()) { - // No point in drawing in device coordinates (pixmap will be scaled anyways). - if (!d->hasOpacityMask) { - const QPixmap pixmap = source->pixmap(Qt::LogicalCoordinates, &offset, - QGraphicsEffectSource::NoExpandPadMode); - painter->drawPixmap(offset, pixmap); - } else { - QRect srcBrect = source->boundingRect().toAlignedRect(); - offset = srcBrect.topLeft(); - QPixmap pixmap(srcBrect.size()); - pixmap.fill(Qt::transparent); - - QPainter pixmapPainter(&pixmap); - pixmapPainter.setRenderHints(painter->renderHints()); - pixmapPainter.translate(-offset); - source->draw(&pixmapPainter); - pixmapPainter.setCompositionMode(QPainter::CompositionMode_DestinationIn); - pixmapPainter.fillRect(srcBrect, d->opacityMask); - pixmapPainter.end(); - - painter->drawPixmap(offset, pixmap); - } - } else { - // Draw pixmap in device coordinates to avoid pixmap scaling; - if (!d->hasOpacityMask) { - const QPixmap pixmap = source->pixmap(Qt::DeviceCoordinates, &offset, - QGraphicsEffectSource::NoExpandPadMode); - painter->setWorldTransform(QTransform()); - painter->drawPixmap(offset, pixmap); - } else { - QTransform worldTransform = painter->worldTransform(); - - // Calculate source bounding rect in logical and device coordinates. - QRectF srcBrect = source->boundingRect(); - QRect srcDeviceBrect = worldTransform.mapRect(srcBrect).toAlignedRect(); - srcDeviceBrect &= source->deviceRect(); + Qt::CoordinateSystem system = source->isPixmap() ? Qt::LogicalCoordinates : Qt::DeviceCoordinates; + QPixmap pixmap = source->pixmap(system, &offset, QGraphicsEffectSource::NoExpandPadMode); + if (pixmap.isNull()) + return; - offset = srcDeviceBrect.topLeft(); - worldTransform *= QTransform::fromTranslate(-srcDeviceBrect.x(), -srcDeviceBrect.y()); - QPixmap pixmap(srcDeviceBrect.size()); - pixmap.fill(Qt::transparent); + painter->save(); + painter->setOpacity(d->opacity); - QPainter pixmapPainter(&pixmap); - pixmapPainter.setRenderHints(painter->renderHints()); + 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); - source->draw(&pixmapPainter); - pixmapPainter.setCompositionMode(QPainter::CompositionMode_DestinationIn); - pixmapPainter.fillRect(srcBrect, d->opacityMask); - pixmapPainter.end(); - - painter->setWorldTransform(QTransform()); - painter->drawPixmap(offset, pixmap); + pixmapPainter.fillRect(source->boundingRect(), 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(); } |