diff options
| -rw-r--r-- | src/gui/painting/qpainter.cpp | 31 |
1 files changed, 20 insertions, 11 deletions
diff --git a/src/gui/painting/qpainter.cpp b/src/gui/painting/qpainter.cpp index 65d87fa..759bd7e 100644 --- a/src/gui/painting/qpainter.cpp +++ b/src/gui/painting/qpainter.cpp @@ -2398,7 +2398,6 @@ QRegion QPainter::clipRegion() const // ### Falcon: Use QPainterPath for (int i=0; i<d->state->clipInfo.size(); ++i) { const QPainterClipInfo &info = d->state->clipInfo.at(i); - QRegion other; switch (info.clipType) { case QPainterClipInfo::RegionClip: { @@ -2451,15 +2450,20 @@ QRegion QPainter::clipRegion() const lastWasNothing = false; continue; } - if (info.operation == Qt::IntersectClip) - region &= QRegion(info.rect) * matrix; - else if (info.operation == Qt::UniteClip) + if (info.operation == Qt::IntersectClip) { + // Use rect intersection if possible. + if (matrix.type() <= QTransform::TxScale) + region &= matrix.mapRect(info.rect); + else + region &= matrix.map(QRegion(info.rect)); + } else if (info.operation == Qt::UniteClip) { region |= QRegion(info.rect) * matrix; - else if (info.operation == Qt::NoClip) { + } else if (info.operation == Qt::NoClip) { lastWasNothing = true; region = QRegion(); - } else + } else { region = QRegion(info.rect) * matrix; + } break; } @@ -2470,15 +2474,20 @@ QRegion QPainter::clipRegion() const lastWasNothing = false; continue; } - if (info.operation == Qt::IntersectClip) - region &= QRegion(info.rectf.toRect()) * matrix; - else if (info.operation == Qt::UniteClip) + if (info.operation == Qt::IntersectClip) { + // Use rect intersection if possible. + if (matrix.type() <= QTransform::TxScale) + region &= matrix.mapRect(info.rectf.toRect()); + else + region &= matrix.map(QRegion(info.rectf.toRect())); + } else if (info.operation == Qt::UniteClip) { region |= QRegion(info.rectf.toRect()) * matrix; - else if (info.operation == Qt::NoClip) { + } else if (info.operation == Qt::NoClip) { lastWasNothing = true; region = QRegion(); - } else + } else { region = QRegion(info.rectf.toRect()) * matrix; + } break; } } |