diff options
| -rw-r--r-- | src/gui/graphicsview/qgraphicsscene.cpp | 13 | ||||
| -rw-r--r-- | tests/auto/qgraphicsitem/tst_qgraphicsitem.cpp | 18 |
2 files changed, 17 insertions, 14 deletions
diff --git a/src/gui/graphicsview/qgraphicsscene.cpp b/src/gui/graphicsview/qgraphicsscene.cpp index 6934abc..6581727 100644 --- a/src/gui/graphicsview/qgraphicsscene.cpp +++ b/src/gui/graphicsview/qgraphicsscene.cpp @@ -4285,12 +4285,7 @@ static void _q_paintIntoCache(QPixmap *pix, QGraphicsItem *item, const QRegion & if (!subPix.isNull()) { // Blit the subpixmap into the main pixmap. pixmapPainter.begin(pix); - if (item->cacheMode() == QGraphicsItem::DeviceCoordinateCache - && itemToPixmap.type() > QTransform::TxTranslate) { - pixmapPainter.setCompositionMode(QPainter::CompositionMode_SourceAtop); - } else { - pixmapPainter.setCompositionMode(QPainter::CompositionMode_Source); - } + pixmapPainter.setCompositionMode(QPainter::CompositionMode_Source); pixmapPainter.setClipRegion(pixmapExposed); pixmapPainter.drawPixmap(br.topLeft(), subPix); pixmapPainter.end(); @@ -4456,6 +4451,8 @@ void QGraphicsScenePrivate::drawItemHelper(QGraphicsItem *item, QPainter *painte } // Create or reuse offscreen pixmap, possibly scroll/blit from the old one. + // If the world transform is rotated we always recreate the cache to avoid + // wrong blending. bool pixModified = false; QGraphicsItemCache::DeviceData *deviceData = &itemCache->deviceData[widget]; bool invertable = true; @@ -4463,7 +4460,9 @@ void QGraphicsScenePrivate::drawItemHelper(QGraphicsItem *item, QPainter *painte if (invertable) diff *= painter->worldTransform(); deviceData->lastTransform = painter->worldTransform(); - if (!invertable || diff.type() > QTransform::TxTranslate) { + if (!invertable + || diff.type() > QTransform::TxTranslate + || painter->worldTransform().type() > QTransform::TxScale) { pixModified = true; itemCache->allExposed = true; itemCache->exposed.clear(); diff --git a/tests/auto/qgraphicsitem/tst_qgraphicsitem.cpp b/tests/auto/qgraphicsitem/tst_qgraphicsitem.cpp index 2b507cb..6725159 100644 --- a/tests/auto/qgraphicsitem/tst_qgraphicsitem.cpp +++ b/tests/auto/qgraphicsitem/tst_qgraphicsitem.cpp @@ -6825,6 +6825,9 @@ void tst_QGraphicsItem::cacheMode() QTRY_COMPARE(tester->repaints, 4); QCOMPARE(testerChild->repaints, 4); QCOMPARE(testerChild2->repaints, 3); + tester->resetTransform(); + testerChild->resetTransform(); + testerChild2->resetTransform(); // Explicit update causes a repaint. tester->update(0, 0, 5, 5); @@ -6898,23 +6901,24 @@ void tst_QGraphicsItem::cacheMode() // because the parent is rotated with a perspective. testerChild->setPos(1, 1); QTest::qWait(25); - QTRY_COMPARE(tester->repaints, 10); + QTRY_COMPARE(tester->repaints, 11); QCOMPARE(testerChild->repaints, 10); QCOMPARE(testerChild2->repaints, 5); + tester->resetTransform(); // Make a huge item tester->setGeometry(QRectF(-4000, -4000, 8000, 8000)); QTest::qWait(25); - QTRY_COMPARE(tester->repaints, 11); - QCOMPARE(testerChild->repaints, 10); + QTRY_COMPARE(tester->repaints, 12); + QCOMPARE(testerChild->repaints, 11); QCOMPARE(testerChild2->repaints, 5); // Move the large item - will cause a repaint as the // cache is clipped. tester->setPos(5, 0); QTest::qWait(25); - QTRY_COMPARE(tester->repaints, 12); - QCOMPARE(testerChild->repaints, 10); + QTRY_COMPARE(tester->repaints, 13); + QCOMPARE(testerChild->repaints, 11); QCOMPARE(testerChild2->repaints, 5); // Hiding and showing should invalidate the cache @@ -6922,8 +6926,8 @@ void tst_QGraphicsItem::cacheMode() QTest::qWait(25); tester->show(); QTest::qWait(25); - QTRY_COMPARE(tester->repaints, 13); - QCOMPARE(testerChild->repaints, 11); + QTRY_COMPARE(tester->repaints, 14); + QCOMPARE(testerChild->repaints, 12); QCOMPARE(testerChild2->repaints, 6); } |