diff options
Diffstat (limited to 'src/widgets/kernel/qwidget.cpp')
-rw-r--r-- | src/widgets/kernel/qwidget.cpp | 29 |
1 files changed, 23 insertions, 6 deletions
diff --git a/src/widgets/kernel/qwidget.cpp b/src/widgets/kernel/qwidget.cpp index e167e646c0..ace25fa78b 100644 --- a/src/widgets/kernel/qwidget.cpp +++ b/src/widgets/kernel/qwidget.cpp @@ -1794,6 +1794,23 @@ QRegion QWidgetPrivate::clipRegion() const return r; } +void QWidgetPrivate::setSystemClip(QPaintDevice *paintDevice, const QRegion ®ion) +{ +// Transform the system clip region from device-independent pixels to device pixels +// Qt 5.0.0: This is a Mac-only code path for now, can be made cross-platform once +// it has been tested. + QPaintEngine *paintEngine = paintDevice->paintEngine(); +#ifdef Q_OS_MAC + const qreal devicePixelRatio = (paintDevice->physicalDpiX() == 0 || paintDevice->logicalDpiX() == 0) ? + 1.0 : (paintDevice->physicalDpiX() / paintDevice->logicalDpiX()); + QTransform scaleTransform; + scaleTransform.scale(devicePixelRatio, devicePixelRatio); + paintEngine->d_func()->systemClip = scaleTransform.map(region); +#else + paintEngine->d_func()->systemClip = region; +#endif +} + #ifndef QT_NO_GRAPHICSEFFECT void QWidgetPrivate::invalidateGraphicsEffectsRecursively() { @@ -4998,13 +5015,12 @@ void QWidgetPrivate::drawWidget(QPaintDevice *pdev, const QRegion &rgn, const QP QWidgetPaintContext context(pdev, rgn, offset, flags, sharedPainter, backingStore); sourced->context = &context; if (!sharedPainter) { - QPaintEngine *paintEngine = pdev->paintEngine(); - paintEngine->d_func()->systemClip = rgn.translated(offset); + setSystemClip(pdev, rgn.translated(offset)); QPainter p(pdev); p.translate(offset); context.painter = &p; graphicsEffect->draw(&p); - paintEngine->d_func()->systemClip = QRegion(); + setSystemClip(pdev, QRegion()); } else { context.painter = sharedPainter; if (sharedPainter->worldTransform() != sourced->lastEffectTransform) { @@ -5061,7 +5077,7 @@ void QWidgetPrivate::drawWidget(QPaintDevice *pdev, const QRegion &rgn, const QP #endif if (sharedPainter) - paintEngine->d_func()->systemClip = toBePainted; + setSystemClip(pdev, toBePainted); else paintEngine->d_func()->systemRect = q->data->crect; @@ -5073,7 +5089,7 @@ void QWidgetPrivate::drawWidget(QPaintDevice *pdev, const QRegion &rgn, const QP } if (!sharedPainter) - paintEngine->d_func()->systemClip = toBePainted.translated(offset); + setSystemClip(pdev, toBePainted.translated(offset)); if (!onScreen && !asRoot && !isOpaque && q->testAttribute(Qt::WA_TintedBackground)) { QPainter p(q); @@ -5108,7 +5124,8 @@ void QWidgetPrivate::drawWidget(QPaintDevice *pdev, const QRegion &rgn, const QP paintEngine->d_func()->systemRect = QRect(); else paintEngine->d_func()->currentClipDevice = 0; - paintEngine->d_func()->systemClip = QRegion(); + + setSystemClip(pdev, QRegion()); } q->setAttribute(Qt::WA_WState_InPaintEvent, false); if (q->paintingActive()) |