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| author | Samuel Rødal <sroedal@trolltech.com> | 2009-10-30 18:28:43 (GMT) |
|---|---|---|
| committer | Samuel Rødal <sroedal@trolltech.com> | 2009-11-02 11:57:55 (GMT) |
| commit | cb357aad0f26c36eb1f942ae37647f9de071c948 (patch) | |
| tree | 37727bff7fbcf57013b5418b952a49c8359e5cba | |
| parent | 64fbefa605d976ab752149bb39880893c82ad8c0 (diff) | |
| download | Qt-cb357aad0f26c36eb1f942ae37647f9de071c948.zip Qt-cb357aad0f26c36eb1f942ae37647f9de071c948.tar.gz Qt-cb357aad0f26c36eb1f942ae37647f9de071c948.tar.bz2 | |
Made QGraphicsEffectSource::draw() use cached pixmap if possible.
Small optimization for the case where the source pixmap is cached.
Reviewed-by: Gunnar Sletta
| -rw-r--r-- | src/gui/effects/qgraphicseffect.cpp | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/src/gui/effects/qgraphicseffect.cpp b/src/gui/effects/qgraphicseffect.cpp index e181b18..78a18d3 100644 --- a/src/gui/effects/qgraphicseffect.cpp +++ b/src/gui/effects/qgraphicseffect.cpp @@ -210,7 +210,23 @@ const QStyleOption *QGraphicsEffectSource::styleOption() const */ void QGraphicsEffectSource::draw(QPainter *painter) { - d_func()->draw(painter); + Q_D(const QGraphicsEffectSource); + + QPixmap pm; + if (QPixmapCache::find(d->m_cacheKey, &pm)) { + QTransform restoreTransform; + if (d->m_cachedSystem == Qt::DeviceCoordinates) { + restoreTransform = painter->worldTransform(); + painter->setWorldTransform(QTransform()); + } + + painter->drawPixmap(d->m_cachedOffset, pm); + + if (d->m_cachedSystem == Qt::DeviceCoordinates) + painter->setWorldTransform(restoreTransform); + } else { + d_func()->draw(painter); + } } /*! |