diff options
Diffstat (limited to 'tests/auto/qpainter/tst_qpainter.cpp')
| -rw-r--r-- | tests/auto/qpainter/tst_qpainter.cpp | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/tests/auto/qpainter/tst_qpainter.cpp b/tests/auto/qpainter/tst_qpainter.cpp index 8b43f9b..87f9c13 100644 --- a/tests/auto/qpainter/tst_qpainter.cpp +++ b/tests/auto/qpainter/tst_qpainter.cpp @@ -225,6 +225,8 @@ private slots: void extendedBlendModes(); + void zeroOpacity(); + private: void fillData(); QColor baseColor( int k, int intensity=255 ); @@ -3792,8 +3794,11 @@ void tst_QPainter::imageBlending() void tst_QPainter::paintOnNullPixmap() { + QPixmap pix(16, 16); + QPixmap textPixmap; QPainter p(&textPixmap); + p.drawPixmap(10, 10, pix); p.end(); QPixmap textPixmap2(16,16); @@ -4147,5 +4152,21 @@ void tst_QPainter::extendedBlendModes() QVERIFY(testCompositionMode(191, 191, 96, QPainter::CompositionMode_Exclusion)); } +void tst_QPainter::zeroOpacity() +{ + QImage source(1, 1, QImage::Format_ARGB32_Premultiplied); + source.fill(0xffffffff); + + QImage target(1, 1, QImage::Format_RGB32); + target.fill(0xff000000); + + QPainter p(&target); + p.setOpacity(0.0); + p.drawImage(0, 0, source); + p.end(); + + QCOMPARE(target.pixel(0, 0), 0xff000000); +} + QTEST_MAIN(tst_QPainter) #include "tst_qpainter.moc" |