diff options
| -rw-r--r-- | src/gui/image/qpixmapfilter.cpp | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/gui/image/qpixmapfilter.cpp b/src/gui/image/qpixmapfilter.cpp index 37a6a18..7cf942c 100644 --- a/src/gui/image/qpixmapfilter.cpp +++ b/src/gui/image/qpixmapfilter.cpp @@ -422,6 +422,9 @@ void QPixmapConvolutionFilter::draw(QPainter *painter, const QPointF &p, const Q if(d->kernelWidth<=0 || d->kernelHeight <= 0) return; + if (src.isNull()) + return; + QPixmapFilter *filter = painter->paintEngine() && painter->paintEngine()->isExtended() ? static_cast<QPaintEngineEx *>(painter->paintEngine())->pixmapFilter(type(), this) : 0; QPixmapConvolutionFilter *convolutionFilter = static_cast<QPixmapConvolutionFilter*>(filter); @@ -902,6 +905,9 @@ void QPixmapBlurFilter::draw(QPainter *painter, const QPointF &p, const QPixmap if (!painter->isActive()) return; + if (src.isNull()) + return; + QRectF srcRect = rect; if (srcRect.isNull()) srcRect = src.rect(); @@ -1082,6 +1088,10 @@ void QPixmapColorizeFilter::setStrength(qreal strength) void QPixmapColorizeFilter::draw(QPainter *painter, const QPointF &dest, const QPixmap &src, const QRectF &srcRect) const { Q_D(const QPixmapColorizeFilter); + + if (src.isNull()) + return; + QPixmapFilter *filter = painter->paintEngine() && painter->paintEngine()->isExtended() ? static_cast<QPaintEngineEx *>(painter->paintEngine())->pixmapFilter(type(), this) : 0; QPixmapColorizeFilter *colorizeFilter = static_cast<QPixmapColorizeFilter*>(filter); @@ -1312,6 +1322,10 @@ void QPixmapDropShadowFilter::draw(QPainter *p, const QRectF &src) const { Q_D(const QPixmapDropShadowFilter); + + if (px.isNull()) + return; + QPixmapFilter *filter = p->paintEngine() && p->paintEngine()->isExtended() ? static_cast<QPaintEngineEx *>(p->paintEngine())->pixmapFilter(type(), this) : 0; QPixmapDropShadowFilter *dropShadowFilter = static_cast<QPixmapDropShadowFilter*>(filter); |