diff options
Diffstat (limited to 'tests/auto/qpainter')
| -rw-r--r-- | tests/auto/qpainter/tst_qpainter.cpp | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/tests/auto/qpainter/tst_qpainter.cpp b/tests/auto/qpainter/tst_qpainter.cpp index 0cb8346..b813d1d 100644 --- a/tests/auto/qpainter/tst_qpainter.cpp +++ b/tests/auto/qpainter/tst_qpainter.cpp @@ -229,6 +229,8 @@ private slots: void extendedBlendModes(); + void zeroOpacity(); + private: void fillData(); QColor baseColor( int k, int intensity=255 ); @@ -4153,5 +4155,21 @@ 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" |