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-rw-r--r--tests/auto/gui/painting/qpainter/tst_qpainter.cpp110
1 files changed, 110 insertions, 0 deletions
diff --git a/tests/auto/gui/painting/qpainter/tst_qpainter.cpp b/tests/auto/gui/painting/qpainter/tst_qpainter.cpp
index d288665c44..91c06ab0b2 100644
--- a/tests/auto/gui/painting/qpainter/tst_qpainter.cpp
+++ b/tests/auto/gui/painting/qpainter/tst_qpainter.cpp
@@ -80,6 +80,7 @@
Q_DECLARE_METATYPE(QGradientStops)
Q_DECLARE_METATYPE(QPainterPath)
Q_DECLARE_METATYPE(QImage::Format)
+Q_DECLARE_METATYPE(QPainter::CompositionMode)
class tst_QPainter : public QObject
{
@@ -287,6 +288,9 @@ private slots:
void cosmeticStrokerClipping_data();
void cosmeticStrokerClipping();
+ void blendARGBonRGB_data();
+ void blendARGBonRGB();
+
private:
void fillData();
void setPenColor(QPainter& p);
@@ -4528,6 +4532,112 @@ void tst_QPainter::QTBUG25153_drawLine()
}
}
+void tst_QPainter::blendARGBonRGB_data()
+{
+ QTest::addColumn<QImage::Format>("dst_format");
+ QTest::addColumn<QImage::Format>("src_format");
+ QTest::addColumn<QPainter::CompositionMode>("compositionMode");
+ QTest::addColumn<QRgb>("color");
+ QTest::addColumn<int>("expected_red");
+
+ QTest::newRow("ARGB over ARGB32") << QImage::Format_ARGB32 << QImage::Format_ARGB32
+ << QPainter::CompositionMode_SourceOver << qRgba(255, 0, 0, 127) << 127 ;
+ QTest::newRow("ARGB_PM over ARGB32") << QImage::Format_ARGB32 << QImage::Format_ARGB32_Premultiplied
+ << QPainter::CompositionMode_SourceOver<< qRgba(127, 0, 0, 127) << 127;
+ QTest::newRow("ARGB source ARGB32") << QImage::Format_ARGB32 << QImage::Format_ARGB32
+ << QPainter::CompositionMode_Source << qRgba(255, 0, 0, 127) << 255;
+ QTest::newRow("ARGB_PM source ARGB32") << QImage::Format_ARGB32 << QImage::Format_ARGB32_Premultiplied
+ << QPainter::CompositionMode_Source << qRgba(127, 0, 0, 127) << 255;
+ QTest::newRow("ARGB source-in ARGB32") << QImage::Format_ARGB32 << QImage::Format_ARGB32
+ << QPainter::CompositionMode_SourceIn << qRgba(255, 0, 0, 127) << 255 ;
+ QTest::newRow("ARGB_PM source-in ARGB32") << QImage::Format_ARGB32 << QImage::Format_ARGB32_Premultiplied
+ << QPainter::CompositionMode_SourceIn << qRgba(127, 0, 0, 127) << 255;
+ // Only ARGB does inverse premultiply, on the rest over and source gives similar results:
+ QTest::newRow("ARGB over RGB32") << QImage::Format_RGB32 << QImage::Format_ARGB32
+ << QPainter::CompositionMode_SourceOver << qRgba(255, 0, 0, 127) << 127;
+ QTest::newRow("ARGB_PM over RGB32") << QImage::Format_RGB32 << QImage::Format_ARGB32_Premultiplied
+ << QPainter::CompositionMode_SourceOver << qRgba(127, 0, 0, 127) << 127;
+ QTest::newRow("ARGB source RGB32") << QImage::Format_RGB32 << QImage::Format_ARGB32
+ << QPainter::CompositionMode_Source << qRgba(255, 0, 0, 127) << 127;
+ QTest::newRow("ARGB_PM source RGB32") << QImage::Format_RGB32 << QImage::Format_ARGB32_Premultiplied
+ << QPainter::CompositionMode_Source << qRgba(127, 0, 0, 127) << 127;
+ QTest::newRow("ARGB source-in RGB32") << QImage::Format_RGB32 << QImage::Format_ARGB32
+ << QPainter::CompositionMode_SourceIn << qRgba(255, 0, 0, 127) << 127;
+ QTest::newRow("ARGB_PM source-in RGB32") << QImage::Format_RGB32 << QImage::Format_ARGB32_Premultiplied
+ << QPainter::CompositionMode_SourceIn << qRgba(127, 0, 0, 127) << 127;
+ QTest::newRow("ARGB over RGB888") << QImage::Format_RGB888 << QImage::Format_ARGB32
+ << QPainter::CompositionMode_SourceOver << qRgba(255, 0, 0, 127) << 127;
+ QTest::newRow("ARGB_PM over RGB888") << QImage::Format_RGB888 << QImage::Format_ARGB32_Premultiplied
+ << QPainter::CompositionMode_SourceOver << qRgba(127, 0, 0, 127) << 127;
+ QTest::newRow("ARGB source RGB888") << QImage::Format_RGB888 << QImage::Format_ARGB32
+ << QPainter::CompositionMode_Source << qRgba(255, 0, 0, 127) << 127;
+ QTest::newRow("ARGB_PM source RGB888") << QImage::Format_RGB888 << QImage::Format_ARGB32_Premultiplied
+ << QPainter::CompositionMode_Source << qRgba(127, 0, 0, 127) << 127;
+ QTest::newRow("ARGB source-in RGB888") << QImage::Format_RGB888 << QImage::Format_ARGB32
+ << QPainter::CompositionMode_SourceIn << qRgba(255, 0, 0, 127) << 127;
+ QTest::newRow("ARGB_PM source-in RGB888") << QImage::Format_RGB888 << QImage::Format_ARGB32_Premultiplied
+ << QPainter::CompositionMode_SourceIn << qRgba(127, 0, 0, 127) << 127;
+ QTest::newRow("ARGB over RGBx8888") << QImage::Format_RGBX8888 << QImage::Format_ARGB32
+ << QPainter::CompositionMode_SourceOver << qRgba(255, 0, 0, 127) << 127;
+ QTest::newRow("ARGB_PM over RGBx8888") << QImage::Format_RGBX8888 << QImage::Format_ARGB32_Premultiplied
+ << QPainter::CompositionMode_SourceOver << qRgba(127, 0, 0, 127) << 127;
+ QTest::newRow("ARGB source RGBx8888") << QImage::Format_RGBX8888 << QImage::Format_ARGB32
+ << QPainter::CompositionMode_Source << qRgba(255, 0, 0, 127) << 127;
+ QTest::newRow("ARGB_PM source RGBx8888") << QImage::Format_RGBX8888 << QImage::Format_ARGB32_Premultiplied
+ << QPainter::CompositionMode_Source << qRgba(127, 0, 0, 127) << 127;
+ QTest::newRow("ARGB source-in RGBx8888") << QImage::Format_RGBX8888 << QImage::Format_ARGB32
+ << QPainter::CompositionMode_SourceIn << qRgba(255, 0, 0, 127) << 127;
+ QTest::newRow("ARGB_PM source-in RGBx8888") << QImage::Format_RGBX8888 << QImage::Format_ARGB32_Premultiplied
+ << QPainter::CompositionMode_SourceIn << qRgba(127, 0, 0, 127) << 127;
+ QTest::newRow("ARGB over RGB16") << QImage::Format_RGB16 << QImage::Format_ARGB32
+ << QPainter::CompositionMode_SourceOver << qRgba(255, 0, 0, 127) << 123;
+ QTest::newRow("ARGB_PM over RGB16") << QImage::Format_RGB16 << QImage::Format_ARGB32_Premultiplied
+ << QPainter::CompositionMode_SourceOver << qRgba(127, 0, 0, 127) << 123;
+ QTest::newRow("ARGB source RGB16") << QImage::Format_RGB16 << QImage::Format_ARGB32
+ << QPainter::CompositionMode_Source << qRgba(255, 0, 0, 127) << 123;
+ QTest::newRow("ARGB_PM source RGB16") << QImage::Format_RGB16 << QImage::Format_ARGB32_Premultiplied
+ << QPainter::CompositionMode_Source << qRgba(127, 0, 0, 127) << 123;
+ QTest::newRow("ARGB source-in RGB16") << QImage::Format_RGB16 << QImage::Format_ARGB32
+ << QPainter::CompositionMode_SourceIn << qRgba(255, 0, 0, 127) << 123;
+ QTest::newRow("ARGB_PM source-in RGB16") << QImage::Format_RGB16 << QImage::Format_ARGB32_Premultiplied
+ << QPainter::CompositionMode_SourceIn << qRgba(127, 0, 0, 127) << 123;
+ QTest::newRow("ARGB over RGB666") << QImage::Format_RGB666 << QImage::Format_ARGB32
+ << QPainter::CompositionMode_SourceOver << qRgba(255, 0, 0, 127) << 125;
+ QTest::newRow("ARGB_PM over RGB666") << QImage::Format_RGB666 << QImage::Format_ARGB32_Premultiplied
+ << QPainter::CompositionMode_SourceOver << qRgba(127, 0, 0, 127) << 125;
+ QTest::newRow("ARGB source RGB666") << QImage::Format_RGB666 << QImage::Format_ARGB32
+ << QPainter::CompositionMode_Source << qRgba(255, 0, 0, 127) << 125;
+ QTest::newRow("ARGB_PM source RGB666") << QImage::Format_RGB666 << QImage::Format_ARGB32_Premultiplied
+ << QPainter::CompositionMode_Source << qRgba(127, 0, 0, 127) << 125;
+ QTest::newRow("ARGB source-in RGB666") << QImage::Format_RGB666 << QImage::Format_ARGB32
+ << QPainter::CompositionMode_SourceIn << qRgba(255, 0, 0, 127) << 125;
+ QTest::newRow("ARGB_PM source-in RGB666") << QImage::Format_RGB666 << QImage::Format_ARGB32_Premultiplied
+ << QPainter::CompositionMode_SourceIn << qRgba(127, 0, 0, 127) << 125;
+}
+
+void tst_QPainter::blendARGBonRGB()
+{
+ QFETCH(QImage::Format, dst_format);
+ QFETCH(QImage::Format, src_format);
+ QFETCH(QPainter::CompositionMode, compositionMode);
+ QFETCH(QRgb, color);
+ QFETCH(int, expected_red);
+
+ QImage imageRgb(16,16, dst_format);
+ QImage imageArgb(16,16, src_format);
+ QPainter painter;
+
+ imageArgb.fill(color);
+
+ imageRgb.fill(Qt::black);
+ painter.begin(&imageRgb);
+ painter.setCompositionMode(compositionMode);
+ painter.drawImage(0, 0, imageArgb);
+ painter.end();
+
+ QCOMPARE(qRed(imageRgb.pixel(0,0)), expected_red);
+}
+
enum CosmeticStrokerPaint
{
Antialiasing,
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-25 08:54:31 +0000