/**************************************************************************** ** ** Copyright (C) 2016 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the test suite of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:GPL-EXCEPT$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and The Qt Company. For licensing terms ** and conditions see https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/contact-us. ** ** GNU General Public License Usage ** Alternatively, this file may be used under the terms of the GNU ** General Public License version 3 as published by the Free Software ** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT ** included in the packaging of this file. Please review the following ** information to ensure the GNU General Public License requirements will ** be met: https://www.gnu.org/licenses/gpl-3.0.html. ** ** $QT_END_LICENSE$ ** ****************************************************************************/ #include #include #ifndef QT_NO_WIDGETS #include #include #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifndef QT_NO_WIDGETS #include #include #include #endif #include Q_DECLARE_METATYPE(QGradientStops) Q_DECLARE_METATYPE(QPainterPath) Q_DECLARE_METATYPE(QImage::Format) Q_DECLARE_METATYPE(QPainter::CompositionMode) class tst_QPainter : public QObject { Q_OBJECT public: tst_QPainter(); private slots: void cleanupTestCase(); void getSetCheck(); #ifndef QT_NO_WIDGETS void drawPixmap_comp_data(); void drawPixmap_comp(); #endif void saveAndRestore_data(); void saveAndRestore(); #ifndef QT_NO_WIDGETS void drawBorderPixmap(); #endif void drawPixmapFragments(); void drawPixmapNegativeScale(); void drawLine_data(); void drawLine(); void drawLine_clipped(); void drawLine_task121143(); void drawLine_task216948(); void drawLine_task190634(); void drawLine_task229459(); void drawLine_task234891(); void drawLineEndPoints(); void drawRect_data() { fillData(); } void drawRect(); void drawRect2(); void fillRect_data(); void fillRect(); void fillRect2_data(); void fillRect2(); void fillRect3_data() { fillRect2_data(); } void fillRect3(); void fillRect4_data() { fillRect2_data(); } void fillRect4(); void fillRectNonPremul_data(); void fillRectNonPremul(); void fillRectRGB30_data(); void fillRectRGB30(); void drawEllipse_data(); void drawEllipse(); void drawClippedEllipse_data(); void drawClippedEllipse(); void drawPath_data(); void drawPath(); void drawPath2(); void drawPath3(); void drawRoundRect_data() { fillData(); } void drawRoundRect(); void qimageFormats_data(); void qimageFormats(); void textOnTransparentImage(); #ifndef QT_NO_WIDGETS void initFrom(); #endif void setWindow(); void combinedMatrix(); void renderHints(); void disableEnableClipping(); void setClipRect(); void setEqualClipRegionAndPath_data(); void setEqualClipRegionAndPath(); void clipRectSaveRestore(); void clipStateSaveRestore(); void clippedFillPath_data(); void clippedFillPath(); void clippedLines_data(); void clippedLines(); void clippedPolygon_data(); void clippedPolygon(); void clippedText(); void clipBoundingRect(); void setOpacity_data(); void setOpacity(); void drawhelper_blend_untransformed_data(); void drawhelper_blend_untransformed(); void drawhelper_blend_tiled_untransformed_data(); void drawhelper_blend_tiled_untransformed(); void porterDuff_warning(); void drawhelper_blend_color(); #ifndef QT_NO_WIDGETS void childWidgetViewport(); #endif void fillRect_objectBoundingModeGradient(); void fillRect_stretchToDeviceMode(); void monoImages(); void linearGradientSymmetry_data(); void linearGradientSymmetry(); void gradientInterpolation(); void gradientPixelFormat_data(); void gradientPixelFormat(); void linearGradientRgb30_data(); void linearGradientRgb30(); void radialGradientRgb30_data(); void radialGradientRgb30(); void fpe_pixmapTransform(); void fpe_zeroLengthLines(); void fpe_divByZero(); void fpe_steepSlopes_data(); void fpe_steepSlopes(); void fpe_rasterizeLine_task232012(); void fpe_radialGradients(); void rasterizer_asserts(); void rasterizer_negativeCoords(); void blendOverFlow_data(); void blendOverFlow(); void largeImagePainting_data(); void largeImagePainting(); void imageScaling_task206785(); void outlineFillConsistency(); void drawImage_task217400_data(); void drawImage_task217400(); void drawImage_1x1(); void drawImage_task258776(); void drawImage_QTBUG28324(); void drawRect_task215378(); void drawRect_task247505(); #if defined(Q_OS_MAC) void drawText_subPixelPositionsInRaster_qtbug5053(); #endif void drawImage_data(); void drawImage(); void clippedImage(); void stateResetBetweenQPainters(); void imageCoordinateLimit(); void imageBlending_data(); void imageBlending(); void imageBlending_clipped(); void paintOnNullPixmap(); void checkCompositionMode(); void drawPolygon(); void inactivePainter(); void extendedBlendModes(); void zeroOpacity(); void clippingBug(); void emptyClip(); void taskQT4444_dontOverflowDashOffset(); void painterBegin(); void setPenColorOnImage(); void setPenColorOnPixmap(); #ifndef QT_NO_WIDGETS void QTBUG5939_attachPainterPrivate(); #endif void drawPointScaled(); void QTBUG14614_gradientCacheRaceCondition(); void drawTextOpacity(); void QTBUG17053_zeroDashPattern(); void QTBUG38781_NoBrushAndQBitmap(); void drawTextOutsideGuiThread(); void drawTextWithComplexBrush(); void QTBUG26013_squareCapStroke(); void QTBUG25153_drawLine(); void cosmeticStrokerClipping_data(); void cosmeticStrokerClipping(); void blendARGBonRGB_data(); void blendARGBonRGB(); void RasterOp_NotDestination(); void drawTextNoHinting(); void drawPolyline_data(); void drawPolyline(); void QTBUG50153_drawImage_assert(); void rotateImage_data(); void rotateImage(); void QTBUG56252(); void blendNullRGB32(); void toRGB64(); void fillPolygon(); private: void fillData(); void setPenColor(QPainter& p); QColor baseColor( int k, int intensity=255 ); QImage getResImage( const QString &dir, const QString &addition, const QString &extension ); QBitmap getBitmap( const QString &dir, const QString &filename, bool mask ); }; // Testing get/set functions void tst_QPainter::getSetCheck() { QImage img(QSize(10, 10), QImage::Format_ARGB32_Premultiplied); QPainter obj1; obj1.begin(&img); // CompositionMode QPainter::compositionMode() // void QPainter::setCompositionMode(CompositionMode) obj1.setCompositionMode(QPainter::CompositionMode(QPainter::CompositionMode_SourceOver)); QCOMPARE(QPainter::CompositionMode(QPainter::CompositionMode_SourceOver), obj1.compositionMode()); obj1.setCompositionMode(QPainter::CompositionMode(QPainter::CompositionMode_DestinationOver)); QCOMPARE(QPainter::CompositionMode(QPainter::CompositionMode_DestinationOver), obj1.compositionMode()); obj1.setCompositionMode(QPainter::CompositionMode(QPainter::CompositionMode_Clear)); QCOMPARE(QPainter::CompositionMode(QPainter::CompositionMode_Clear), obj1.compositionMode()); obj1.setCompositionMode(QPainter::CompositionMode(QPainter::CompositionMode_Source)); QCOMPARE(QPainter::CompositionMode(QPainter::CompositionMode_Source), obj1.compositionMode()); obj1.setCompositionMode(QPainter::CompositionMode(QPainter::CompositionMode_Destination)); QCOMPARE(QPainter::CompositionMode(QPainter::CompositionMode_Destination), obj1.compositionMode()); obj1.setCompositionMode(QPainter::CompositionMode(QPainter::CompositionMode_SourceIn)); QCOMPARE(QPainter::CompositionMode(QPainter::CompositionMode_SourceIn), obj1.compositionMode()); obj1.setCompositionMode(QPainter::CompositionMode(QPainter::CompositionMode_DestinationIn)); QCOMPARE(QPainter::CompositionMode(QPainter::CompositionMode_DestinationIn), obj1.compositionMode()); obj1.setCompositionMode(QPainter::CompositionMode(QPainter::CompositionMode_SourceOut)); QCOMPARE(QPainter::CompositionMode(QPainter::CompositionMode_SourceOut), obj1.compositionMode()); obj1.setCompositionMode(QPainter::CompositionMode(QPainter::CompositionMode_DestinationOut)); QCOMPARE(QPainter::CompositionMode(QPainter::CompositionMode_DestinationOut), obj1.compositionMode()); obj1.setCompositionMode(QPainter::CompositionMode(QPainter::CompositionMode_SourceAtop)); QCOMPARE(QPainter::CompositionMode(QPainter::CompositionMode_SourceAtop), obj1.compositionMode()); obj1.setCompositionMode(QPainter::CompositionMode(QPainter::CompositionMode_DestinationAtop)); QCOMPARE(QPainter::CompositionMode(QPainter::CompositionMode_DestinationAtop), obj1.compositionMode()); obj1.setCompositionMode(QPainter::CompositionMode(QPainter::CompositionMode_Xor)); QCOMPARE(QPainter::CompositionMode(QPainter::CompositionMode_Xor), obj1.compositionMode()); // const QPen & QPainter::pen() // void QPainter::setPen(const QPen &) QPen var3(Qt::red); obj1.setPen(var3); QCOMPARE(var3, obj1.pen()); obj1.setPen(QPen()); QCOMPARE(QPen(), obj1.pen()); // const QBrush & QPainter::brush() // void QPainter::setBrush(const QBrush &) QBrush var4(Qt::red); obj1.setBrush(var4); QCOMPARE(var4, obj1.brush()); obj1.setBrush(QBrush()); QCOMPARE(QBrush(), obj1.brush()); // const QBrush & QPainter::background() // void QPainter::setBackground(const QBrush &) QBrush var5(Qt::yellow); obj1.setBackground(var5); QCOMPARE(var5, obj1.background()); obj1.setBackground(QBrush()); QCOMPARE(QBrush(), obj1.background()); // bool QPainter::matrixEnabled() // void QPainter::setMatrixEnabled(bool) obj1.setMatrixEnabled(false); QCOMPARE(false, obj1.matrixEnabled()); obj1.setMatrixEnabled(true); QCOMPARE(true, obj1.matrixEnabled()); // bool QPainter::viewTransformEnabled() // void QPainter::setViewTransformEnabled(bool) obj1.setViewTransformEnabled(false); QCOMPARE(false, obj1.viewTransformEnabled()); obj1.setViewTransformEnabled(true); QCOMPARE(true, obj1.viewTransformEnabled()); } tst_QPainter::tst_QPainter() { // QtTestCase sets this to false, but this turns off alpha pixmaps on Unix. QGuiApplication::setDesktopSettingsAware(true); } void tst_QPainter::cleanupTestCase() { QFile::remove(QLatin1String("dest.png")); QFile::remove(QLatin1String("expected.png")); QFile::remove(QLatin1String("foo.png")); } #ifndef QT_NO_WIDGETS void tst_QPainter::drawPixmap_comp_data() { if (QGuiApplication::primaryScreen()->depth() < 24) QSKIP("Test only works on 32 bit displays"); QTest::addColumn("dest"); QTest::addColumn("source"); QTest::newRow("0% on 0%, 1") << 0x00000000u<< 0x00000000u; QTest::newRow("0% on 0%, 2") << 0x00007fffu << 0x00ff007fu; QTest::newRow("50% on a=0%") << 0x00000000u << 0x7fff0000u; QTest::newRow("50% on a=50%") << 0x7f000000u << 0x7fff0000u; QTest::newRow("50% on deadbeef") << 0xdeafbeefu << 0x7fff0000u; QTest::newRow("deadbeef on a=0%") << 0x00000000u << 0xdeadbeefu; QTest::newRow("deadbeef on a=50%") << 0x7f000000u << 0xdeadbeefu; QTest::newRow("50% blue on 50% red") << 0x7fff0000u << 0x7f0000ffu; QTest::newRow("50% blue on 50% green") << 0x7f00ff00u << 0x7f0000ffu; QTest::newRow("50% red on 50% green") << 0x7f00ff00u << 0x7fff0000u; QTest::newRow("0% on 50%") << 0x7fff00ffu << 0x00ffffffu; QTest::newRow("100% on deadbeef") << 0xdeafbeefu << 0xffabcdefu; QTest::newRow("100% on a=0%") << 0x00000000u << 0xffabcdefu; } QRgb qt_compose_alpha(QRgb source, QRgb dest) { int r1 = qRed(dest), g1 = qGreen(dest), b1 = qBlue(dest), a1 = qAlpha(dest); int r2 = qRed(source), g2 = qGreen(source), b2 = qBlue(source), a2 = qAlpha(source); int alpha = qMin(a2 + ((255 - a2) * a1 + 127) / 255, 255); if (alpha == 0) return qRgba(0, 0, 0, 0); return qRgba( qMin((r2 * a2 + (255 - a2) * r1 * a1 / 255) / alpha, 255), qMin((g2 * a2 + (255 - a2) * g1 * a1 / 255) / alpha, 255), qMin((b2 * a2 + (255 - a2) * b1 * a1 / 255) / alpha, 255), alpha); } /* Tests that drawing masked pixmaps works */ void tst_QPainter::drawPixmap_comp() { #ifdef Q_OS_MAC QSKIP("Mac has other ideas about alpha composition"); #endif QFETCH(uint, dest); QFETCH(uint, source); QRgb expected = qt_compose_alpha(source, dest); QColor c1(qRed(dest), qGreen(dest), qBlue(dest), qAlpha(dest)); QColor c2(qRed(source), qGreen(source), qBlue(source), qAlpha(source)); QPixmap destPm(10, 10), srcPm(10, 10); destPm.fill(c1); srcPm.fill(c2); #if 0 // Used to be included in Qt4 for Q_WS_X11 if (!destPm.x11PictureHandle()) QSKIP("Requires XRender support"); #endif QPainter p(&destPm); p.drawPixmap(0, 0, srcPm); p.end(); QImage result = destPm.toImage().convertToFormat(QImage::Format_ARGB32); bool different = false; for (int y=0; y off) || (qAbs(qGreen(pix) - qGreen(expected)) > off) || (qAbs(qBlue(pix) - qBlue(expected)) > off) || (qAbs(qAlpha(pix) - qAlpha(expected)) > off); } if (diff && !different) qDebug( "Different at %d,%d pixel [%d,%d,%d,%d] expected [%d,%d,%d,%d]", x, y, qRed(result.pixel(x, y)), qGreen(result.pixel(x, y)), qBlue(result.pixel(x, y)), qAlpha(result.pixel(x, y)), qRed(expected), qGreen(expected), qBlue(expected), qAlpha(expected)); different |= diff; } QVERIFY(!different); } #endif void tst_QPainter::saveAndRestore_data() { QTest::addColumn("font"); QTest::addColumn("pen"); QTest::addColumn("brush"); QTest::addColumn("backgroundColor"); QTest::addColumn("backgroundMode"); QTest::addColumn("brushOrigin"); QTest::addColumn("clipRegion"); QTest::addColumn("window"); QTest::addColumn("viewport"); QPixmap pixmap(1, 1); QPainter p(&pixmap); QFont font = p.font(); QPen pen = p.pen(); QBrush brush = p.brush(); QColor backgroundColor = p.background().color(); Qt::BGMode backgroundMode = p.backgroundMode(); QPoint brushOrigin = p.brushOrigin(); QRegion clipRegion = p.clipRegion(); QRect window = p.window(); QRect viewport = p.viewport(); QTest::newRow("Original") << font << pen << brush << backgroundColor << int(backgroundMode) << brushOrigin << clipRegion << window << viewport; QFont font2 = font; font2.setPointSize( 24 ); QTest::newRow("Modified font.pointSize, brush, backgroundColor, backgroundMode") << font2 << pen << QBrush(Qt::red) << QColor(Qt::blue) << int(Qt::TransparentMode) << brushOrigin << clipRegion << window << viewport; font2 = font; font2.setPixelSize( 20 ); QTest::newRow("Modified font.pixelSize, brushOrigin, pos") << font2 << pen << brush << backgroundColor << int(backgroundMode) << QPoint( 50, 32 ) << clipRegion << window << viewport; QTest::newRow("Modified clipRegion, window, viewport") << font << pen << brush << backgroundColor << int(backgroundMode) << brushOrigin << clipRegion.subtracted(QRect(10,10,50,30)) << QRect(-500, -500, 500, 500 ) << QRect( 0, 0, 50, 50 ); } void tst_QPainter::saveAndRestore() { QFETCH( QFont, font ); QFETCH( QPen, pen ); QFETCH( QBrush, brush ); QFETCH( QColor, backgroundColor ); QFETCH( int, backgroundMode ); QFETCH( QPoint, brushOrigin ); QFETCH( QRegion, clipRegion ); QFETCH( QRect, window ); QFETCH( QRect, viewport ); QPixmap pixmap(1, 1); QPainter painter(&pixmap); QFont font_org = painter.font(); QPen pen_org = painter.pen(); QBrush brush_org = painter.brush(); QColor backgroundColor_org = painter.background().color(); Qt::BGMode backgroundMode_org = painter.backgroundMode(); QPoint brushOrigin_org = painter.brushOrigin(); QRegion clipRegion_org = painter.clipRegion(); QRect window_org = painter.window(); QRect viewport_org = painter.viewport(); painter.save(); painter.setFont( font ); painter.setPen( QPen(pen) ); painter.setBrush( brush ); painter.setBackground( backgroundColor ); painter.setBackgroundMode( (Qt::BGMode)backgroundMode ); painter.setBrushOrigin( brushOrigin ); painter.setClipRegion( clipRegion ); painter.setWindow( window ); painter.setViewport( viewport ); painter.restore(); QCOMPARE( painter.font(), font_org ); QCOMPARE( painter.font().pointSize(), font_org.pointSize() ); QCOMPARE( painter.font().pixelSize(), font_org.pixelSize() ); QCOMPARE( painter.pen(), pen_org ); QCOMPARE( painter.brush(), brush_org ); QCOMPARE( painter.background().color(), backgroundColor_org ); QCOMPARE( painter.backgroundMode(), backgroundMode_org ); QCOMPARE( painter.brushOrigin(), brushOrigin_org ); QCOMPARE( painter.clipRegion(), clipRegion_org ); QCOMPARE( painter.window(), window_org ); QCOMPARE( painter.viewport(), viewport_org ); } /* Helper functions */ QColor tst_QPainter::baseColor( int k, int intensity ) { int r = ( k & 1 ) * intensity; int g = ( (k>>1) & 1 ) * intensity; int b = ( (k>>2) & 1 ) * intensity; return QColor( r, g, b ); } QImage tst_QPainter::getResImage( const QString &dir, const QString &addition, const QString &extension ) { QImage res; QString resFilename = dir + QLatin1String("/res_") + addition + QLatin1Char('.') + extension; if ( !res.load( resFilename ) ) { QWARN(QString("Could not load result data %s %1").arg(resFilename).toLatin1()); return QImage(); } return res; } QBitmap tst_QPainter::getBitmap( const QString &dir, const QString &filename, bool mask ) { QBitmap bm; QString bmFilename = dir + QLatin1Char('/') + filename + QLatin1String(".xbm"); if ( !bm.load( bmFilename ) ) { QWARN(QString("Could not load bitmap '%1'").arg(bmFilename).toLatin1()); return QBitmap(); } if ( mask ) { QBitmap mask; QString maskFilename = dir + QLatin1Char('/') + filename + QLatin1String("-mask.xbm"); if (!mask.load(maskFilename)) { QWARN(QString("Could not load mask '%1'").arg(maskFilename).toLatin1()); return QBitmap(); } bm.setMask( mask ); } return bm; } static int getPaintedPixels(const QImage &image, const QColor &background) { uint color = background.rgba(); int pixels = 0; for (int y = 0; y < image.height(); ++y) for (int x = 0; x < image.width(); ++x) if (image.pixel(x, y) != color) ++pixels; return pixels; } static QRect getPaintedSize(const QImage &image, const QColor &background) { // not the fastest but at least it works.. int xmin = image.width() + 1; int xmax = -1; int ymin = image.height() +1; int ymax = -1; uint color = background.rgba(); for ( int y = 0; y < image.height(); ++y ) { for (int x = 0; x < image.width(); ++x) { QRgb pixel = image.pixel( x, y ); if (pixel != color && x < xmin) xmin = x; if (pixel != color && x > xmax) xmax = x; if (pixel != color && y < ymin) ymin = y; if (pixel != color && y > ymax) ymax = y; } } return QRect(xmin, ymin, xmax - xmin + 1, ymax - ymin + 1); } static QRect getPaintedSize(const QPixmap &pm, const QColor &background) { return getPaintedSize(pm.toImage(), background); } #ifndef QT_NO_WIDGETS void tst_QPainter::initFrom() { QWidget *widget = new QWidget(); QPalette pal = widget->palette(); pal.setColor(QPalette::Foreground, QColor(255, 0, 0)); pal.setBrush(QPalette::Background, QColor(0, 255, 0)); widget->setPalette(pal); widget->show(); QFont font = widget->font(); font.setPointSize(26); font.setItalic(true); widget->setFont(font); QPixmap pm(100, 100); QPainter p(&pm); p.initFrom(widget); QCOMPARE(p.font(), font); QCOMPARE(p.pen().color(), pal.color(QPalette::Foreground)); QCOMPARE(p.background(), pal.background()); delete widget; } void tst_QPainter::drawBorderPixmap() { QPixmap src(79,79); src.fill(Qt::transparent); QImage pm(200,200,QImage::Format_RGB32); QPainter p(&pm); p.setTransform(QTransform(-1,0,0,-1,173.5,153.5)); qDrawBorderPixmap(&p, QRect(0,0,75,105), QMargins(39,39,39,39), src, QRect(0,0,79,79), QMargins(39,39,39,39), QTileRules(Qt::StretchTile,Qt::StretchTile), 0); } #endif void tst_QPainter::drawPixmapFragments() { QPixmap origPixmap(20, 20); QPixmap resPixmap(20, 20); QPainter::PixmapFragment fragments[4] = { {15, 15, 0, 0, 10, 10, 1, 1, 0, 1}, { 5, 15, 10, 0, 10, 10, 1, 1, 0, 1}, {15, 5, 0, 10, 10, 10, 1, 1, 0, 1}, { 5, 5, 10, 10, 10, 10, 1, 1, 0, 1} }; { QPainter p(&origPixmap); p.fillRect(0, 0, 10, 10, Qt::red); p.fillRect(10, 0, 10, 10, Qt::green); p.fillRect(0, 10, 10, 10, Qt::blue); p.fillRect(10, 10, 10, 10, Qt::yellow); } { QPainter p(&resPixmap); p.drawPixmapFragments(fragments, 4, origPixmap); } QImage origImage = origPixmap.toImage().convertToFormat(QImage::Format_ARGB32); QImage resImage = resPixmap.toImage().convertToFormat(QImage::Format_ARGB32); QCOMPARE(resImage.size(), resPixmap.size()); QVERIFY(resImage.pixel(5, 5) == origImage.pixel(15, 15)); QVERIFY(resImage.pixel(5, 15) == origImage.pixel(15, 5)); QVERIFY(resImage.pixel(15, 5) == origImage.pixel(5, 15)); QVERIFY(resImage.pixel(15, 15) == origImage.pixel(5, 5)); QPainter::PixmapFragment fragment = QPainter::PixmapFragment::create(QPointF(20, 20), QRectF(30, 30, 2, 2)); QCOMPARE(fragment.x, qreal(20)); QCOMPARE(fragment.y, qreal(20)); QCOMPARE(fragment.sourceLeft, qreal(30)); QCOMPARE(fragment.sourceTop, qreal(30)); QCOMPARE(fragment.width, qreal(2)); QCOMPARE(fragment.height, qreal(2)); QCOMPARE(fragment.scaleX, qreal(1)); QCOMPARE(fragment.scaleY, qreal(1)); QCOMPARE(fragment.rotation, qreal(0)); QCOMPARE(fragment.opacity, qreal(1)); } void tst_QPainter::drawPixmapNegativeScale() { // basePixmap is a 16x16 opaque white square ... QPixmap basePixmap(16, 16); basePixmap.fill(QColor(255, 255, 255, 255)); // ... with an opaque black 8x16 left strip QPainter p(&basePixmap); p.setCompositionMode(QPainter::CompositionMode_Source); p.fillRect(QRect(0, 0, 8, 16), QColor(0, 0, 0, 255)); p.end(); // verify one pixel value for each strip QImage baseImage = basePixmap.toImage().convertToFormat(QImage::Format_ARGB32); QVERIFY(baseImage.pixel(4, 8) == qRgba(0, 0, 0, 255)); QVERIFY(baseImage.pixel(12, 8) == qRgba(255, 255, 255, 255)); // resultPixmap is a 16x16 square QPixmap resultPixmap(16, 16); // draw basePixmap over resultPixmap using x=-1.0 y=-1.0 // scaling factors (i.e. 180° rotation) QPainter p2(&resultPixmap); p2.setCompositionMode(QPainter::CompositionMode_Source); p2.scale(qreal(-1.0), qreal(-1.0)); p2.translate(-resultPixmap.width(), -resultPixmap.height()); p2.drawPixmap(resultPixmap.rect(), basePixmap); p2.end(); // check result QImage resultImage = resultPixmap.toImage().convertToFormat(QImage::Format_ARGB32); QVERIFY(resultImage.pixel(4, 8) == qRgba(255, 255, 255, 255)); // left strip is now white QVERIFY(resultImage.pixel(12, 8) == qRgba(0, 0, 0, 255)); // and right strip is now black } void tst_QPainter::drawLine_data() { QTest::addColumn("line"); QTest::newRow("0-45") << QLine(0, 20, 100, 0); QTest::newRow("45-90") << QLine(0, 100, 20, 0); QTest::newRow("90-135") << QLine(20, 100, 0, 0); QTest::newRow("135-180") << QLine(100, 20, 0, 0); QTest::newRow("180-225") << QLine(100, 0, 0, 20); QTest::newRow("225-270") << QLine(20, 0, 0, 100); QTest::newRow("270-315") << QLine(0, 0, 20, 100); QTest::newRow("315-360") << QLine(0, 0, 100, 20); } void tst_QPainter::drawLine() { const int offset = 5; const int epsilon = 1; // allow for one pixel difference QFETCH(QLine, line); QPixmap pixmapUnclipped(qMin(line.x1(), line.x2()) + 2*offset + qAbs(line.dx()), qMin(line.y1(), line.y2()) + 2*offset + qAbs(line.dy())); { // unclipped pixmapUnclipped.fill(Qt::white); QPainter p(&pixmapUnclipped); p.setRenderHint(QPainter::Qt4CompatiblePainting); p.translate(offset, offset); p.setPen(QPen(Qt::black)); p.drawLine(line); p.end(); const QRect painted = getPaintedSize(pixmapUnclipped, Qt::white); QLine l = line; l.translate(offset, offset); QVERIFY(qAbs(painted.width() - qAbs(l.dx())) <= epsilon); QVERIFY(qAbs(painted.height() - qAbs(l.dy())) <= epsilon); QVERIFY(qAbs(painted.top() - qMin(l.y1(), l.y2())) <= epsilon); QVERIFY(qAbs(painted.left() - qMin(l.x1(), l.x2())) <= epsilon); QVERIFY(qAbs(painted.bottom() - qMax(l.y1(), l.y2())) <= epsilon); QVERIFY(qAbs(painted.right() - qMax(l.x1(), l.x2())) <= epsilon); } QPixmap pixmapClipped(qMin(line.x1(), line.x2()) + 2*offset + qAbs(line.dx()), qMin(line.y1(), line.y2()) + 2*offset + qAbs(line.dy())); { // clipped const QRect clip = QRect(line.p1(), line.p2()).normalized(); pixmapClipped.fill(Qt::white); QPainter p(&pixmapClipped); p.setRenderHint(QPainter::Qt4CompatiblePainting); p.translate(offset, offset); p.setClipRect(clip); p.setPen(QPen(Qt::black)); p.drawLine(line); p.end(); } const QImage unclipped = pixmapUnclipped.toImage(); const QImage clipped = pixmapClipped.toImage(); QCOMPARE(unclipped, clipped); } void tst_QPainter::drawLine_clipped() { QImage image(16, 1, QImage::Format_ARGB32_Premultiplied); image.fill(0x0); QPainter p(&image); p.setPen(QPen(Qt::black, 10)); // this should fill the whole image p.drawLine(-1, -1, 17, 1); p.end(); for (int x = 0; x < 16; ++x) QCOMPARE(image.pixel(x, 0), 0xff000000); } void tst_QPainter::drawLine_task121143() { QPen pen(Qt::black); QImage image(5, 5, QImage::Format_ARGB32_Premultiplied); image.fill(0xffffffff); QPainter p(&image); p.setPen(pen); p.setRenderHint(QPainter::Qt4CompatiblePainting); p.drawLine(QLine(0, 0+4, 0+4, 0)); p.end(); QImage expected(5, 5, QImage::Format_ARGB32_Premultiplied); expected.fill(0xffffffff); for (int x = 0; x < 5; ++x) expected.setPixel(x, 5-x-1, pen.color().rgb()); QCOMPARE(image, expected); } void tst_QPainter::drawLine_task190634() { QPen pen(Qt::black, 3); QImage image(32, 32, QImage::Format_ARGB32_Premultiplied); QPainter p(&image); p.fillRect(0, 0, image.width(), image.height(), Qt::white); p.setPen(pen); p.drawLine(QLineF(2, -1.6, 10, -1.6)); p.end(); const uint *data = reinterpret_cast(image.bits()); for (int i = 0; i < image.width() * image.height(); ++i) QCOMPARE(data[i], 0xffffffff); p.begin(&image); p.fillRect(0, 0, image.width(), image.height(), Qt::white); p.setPen(pen); p.drawLine(QLineF(-1.6, 2, -1.6, 10)); p.end(); data = reinterpret_cast(image.bits()); for (int i = 0; i < image.width() * image.height(); ++i) QCOMPARE(data[i], 0xffffffff); p.begin(&image); p.fillRect(0, 0, image.width(), image.height(), Qt::white); p.setPen(pen); p.drawLine( QPoint(2,-2), QPoint(3,-5) ); p.end(); data = reinterpret_cast(image.bits()); for (int i = 0; i < image.width() * image.height(); ++i) QCOMPARE(data[i], 0xffffffff); } void tst_QPainter::drawLine_task229459() { QImage image(32, 32, QImage::Format_ARGB32_Premultiplied); image.fill(0x0); QPen pen(Qt::black, 64); QPainter p(&image); p.setPen(pen); p.drawLine(-8, -8, 10000000, 10000000); p.end(); QImage expected = image; expected.fill(0xff000000); QCOMPARE(image, expected); } void tst_QPainter::drawLine_task234891() { QImage img(100, 1000, QImage::Format_ARGB32_Premultiplied); img.fill(0x0); QImage expected = img; QPainter p(&img); p.setPen(QPen(QBrush(QColor(255,0,0)), 6)); p.drawLine(QPointF(25000,100),QPointF(30000,105)); p.setPen(QPen(QBrush(QColor(0,255,0)), 6)); p.drawLine(QPointF(30000,150),QPointF(35000,155)); p.setPen(QPen(QBrush(QColor(0,0,255)), 6)); p.drawLine(QPointF(65000,200),QPointF(66000,205)); QCOMPARE(expected, img); } void tst_QPainter::drawLine_task216948() { QImage img(1, 10, QImage::Format_ARGB32_Premultiplied); img.fill(0x0); QPainter p(&img); QLine line(10, 0, 10, 10); p.translate(-10, 0); p.drawLine(line); p.end(); for (int i = 0; i < img.height(); ++i) QCOMPARE(img.pixel(0, i), QColor(Qt::black).rgba()); } void tst_QPainter::drawLineEndPoints() { QImage img(256, 256, QImage::Format_ARGB32_Premultiplied); img.fill(0x0); QPainter p; for (int x = 0; x < img.width(); ++x) { QRgb color = qRgb(x, 0, 0); p.begin(&img); p.setPen(QPen(color)); p.drawLine(x, 0, 255 - x, 255); p.end(); QCOMPARE(img.pixel(x, 0), color); QCOMPARE(img.pixel(255 - x, 255), color); } for (int y = 0; y < img.height(); ++y) { QRgb color = qRgb(0, y, 0); p.begin(&img); p.setPen(QPen(color)); p.drawLine(0, y, 255, 255 - y); p.end(); QCOMPARE(img.pixel(0, y), color); QCOMPARE(img.pixel(255, 255 - y), color); } for (int x = 0; x < img.width(); ++x) { QRgb color = qRgb(x, 0, x); p.begin(&img); p.setPen(QPen(color)); p.drawLine(x, 255, 255 - x, 0); p.end(); QCOMPARE(img.pixel(x, 255), color); QCOMPARE(img.pixel(255 - x, 0), color); } for (int y = 0; y < img.height(); ++y) { QRgb color = qRgb(0, y, y); p.begin(&img); p.setPen(QPen(color)); p.drawLine(255, y, 0, 255 - y); p.end(); QCOMPARE(img.pixel(255, y), color); QCOMPARE(img.pixel(0, 255 - y), color); } } void tst_QPainter::drawRect() { QFETCH(QRect, rect); QFETCH(bool, usePen); QPixmap pixmap(rect.x() + rect.width() + 10, rect.y() + rect.height() + 10); { pixmap.fill(Qt::white); QPainter p(&pixmap); p.setPen(usePen ? QPen(Qt::black) : QPen(Qt::NoPen)); p.setBrush(Qt::black); p.drawRect(rect); p.end(); int increment = usePen ? 1 : 0; const QRect painted = getPaintedSize(pixmap, Qt::white); QCOMPARE(painted.width(), rect.width() + increment); QCOMPARE(painted.height(), rect.height() + increment); } } void tst_QPainter::drawRect2() { QImage image(64, 64, QImage::Format_ARGB32_Premultiplied); { image.fill(0xffffffff); QTransform transform(0.368567, 0, 0, 0, 0.368567, 0, 0.0289, 0.0289, 1); QPainter p(&image); p.setRenderHint(QPainter::Qt4CompatiblePainting); p.setTransform(transform); p.setBrush(Qt::red); p.setPen(Qt::NoPen); p.drawRect(QRect(14, 14, 39, 39)); p.end(); QRect fill = getPaintedSize(image, Qt::white); image.fill(0xffffffff); p.begin(&image); p.setRenderHint(QPainter::Qt4CompatiblePainting); p.setTransform(transform); p.drawRect(QRect(14, 14, 39, 39)); p.end(); QRect stroke = getPaintedSize(image, Qt::white); QCOMPARE(stroke.adjusted(1, 1, 0, 0), fill.adjusted(0, 0, 1, 1)); } } void tst_QPainter::fillRect_data() { QTest::addColumn("format"); QTest::newRow("argb32pm") << QImage::Format_ARGB32_Premultiplied; QTest::newRow("rgba8888pm") << QImage::Format_RGBA8888_Premultiplied; QTest::newRow("rgba64pm") << QImage::Format_RGBA64_Premultiplied; } void tst_QPainter::fillRect() { QFETCH(QImage::Format, format); QImage image(100, 100, format); image.fill(QColor(0, 0, 0, 0).rgba()); QPainter p(&image); p.fillRect(0, 0, 100, 100, QColor(255, 0, 0, 127)); // pixmap.save("bla1.png", "PNG"); QCOMPARE(getPaintedSize(image, QColor(0, 0, 0, 0)), QRect(0, 0, 100, 100)); QCOMPARE(getPaintedSize(image, QColor(127, 0, 0, 127)).isValid(), QRect().isValid()); p.setCompositionMode(QPainter::CompositionMode_SourceIn); p.fillRect(50, 0, 50, 100, QColor(0, 0, 255, 255)); QCOMPARE(getPaintedSize(image, QColor(127, 0, 0, 127)), QRect(50, 0, 50, 100)); QCOMPARE(getPaintedSize(image, QColor(0, 0, 127, 127)), QRect(0, 0, 50, 100)); } void tst_QPainter::fillRect2_data() { QTest::addColumn("format"); QTest::newRow("argb32") << QImage::Format_ARGB32; QTest::newRow("argb32pm") << QImage::Format_ARGB32_Premultiplied; QTest::newRow("rgba8888") << QImage::Format_RGBA8888; QTest::newRow("rgba8888pm") << QImage::Format_RGBA8888_Premultiplied; QTest::newRow("a2rgb30pm") << QImage::Format_A2RGB30_Premultiplied; QTest::newRow("a2bgr30pm") << QImage::Format_A2BGR30_Premultiplied; } void tst_QPainter::fillRect2() { QFETCH(QImage::Format, format); QRgb background = 0x0; QImage img(1, 20, format); img.fill(background); QPainter p(&img); QRectF rect(0, 1, 1.2, 18); p.fillRect(rect, Qt::yellow); p.end(); QCOMPARE(img.pixel(0, 0), background); QCOMPARE(img.pixel(0, img.height() - 1), background); QCOMPARE(img.pixel(0, 1), img.pixel(0, 2)); QCOMPARE(img.pixel(0, img.height() - 2), img.pixel(0, img.height() - 3)); QCOMPARE(img.pixel(0, 1), QColor(Qt::yellow).rgba()); } void tst_QPainter::fillRect3() { QFETCH(QImage::Format, format); QImage img(1, 1, format); img.fill(QColor(Qt::black).rgba()); QPainter p(&img); p.setCompositionMode(QPainter::CompositionMode_Source); p.fillRect(img.rect(), Qt::transparent); p.end(); QCOMPARE(img.pixel(0, 0), 0U); } void tst_QPainter::fillRect4() { QFETCH(QImage::Format, format); QImage image(100, 1, format); image.fill(0x0); QImage expected = image; expected.fill(0xffffffff); QPainter p(&image); p.scale(1.1, 1); p.setPen(Qt::NoPen); for (int i = 0; i < 33; ++i) p.fillRect(QRectF(3 * i, 0, 3, 1), Qt::white); p.end(); QCOMPARE(image, expected); } void tst_QPainter::fillRectNonPremul_data() { QTest::addColumn("format"); QTest::addColumn("color"); QTest::newRow("argb32 7f1f3f7f") << QImage::Format_ARGB32 << qRgba(31, 63, 127, 127); QTest::newRow("rgba8888 7f1f3f7f") << QImage::Format_RGBA8888 << qRgba(31, 63, 127, 127); QTest::newRow("argb32 3f1f3f7f") << QImage::Format_ARGB32 << qRgba(31, 63, 127, 63); QTest::newRow("rgba8888 3f1f3f7f") << QImage::Format_RGBA8888 << qRgba(31, 63, 127, 63); QTest::newRow("argb32 070375f4") << QImage::Format_ARGB32 << qRgba(3, 117, 244, 7); QTest::newRow("rgba8888 070375f4") << QImage::Format_RGBA8888 << qRgba(3, 117, 244, 7); QTest::newRow("argb32 0301fe0c") << QImage::Format_ARGB32 << qRgba(1, 254, 12, 3); QTest::newRow("rgba8888 0301fe0c") << QImage::Format_RGBA8888 << qRgba(1, 254, 12, 3); QTest::newRow("argb32 01804010") << QImage::Format_ARGB32 << qRgba(128, 64, 32, 1); QTest::newRow("rgba8888 01804010") << QImage::Format_RGBA8888 << qRgba(128, 64, 32, 1); } void tst_QPainter::fillRectNonPremul() { QFETCH(QImage::Format, format); QFETCH(uint, color); QImage image(1, 1, format); QRectF rect(0, 0, 1, 1); // Fill with CompositionMode_SourceOver tests blend_color image.fill(Qt::transparent); QPainter painter(&image); painter.fillRect(rect, QColor::fromRgba(color)); painter.end(); // Fill with CompositionMode_Source tests rectfill. painter.begin(&image); painter.setCompositionMode(QPainter::CompositionMode_Source); painter.fillRect(rect, QColor::fromRgba(color)); painter.end(); QRgb p = image.pixel(0, 0); QCOMPARE(qAlpha(p), qAlpha(color)); QVERIFY(qAbs(qRed(p)-qRed(color)) <= 1); QVERIFY(qAbs(qGreen(p)-qGreen(color)) <= 1); QVERIFY(qAbs(qBlue(p)-qBlue(color)) <= 1); } void tst_QPainter::fillRectRGB30_data() { QTest::addColumn("color"); QTest::newRow("17|43|259") << (0xc0000000 | (17 << 20) | (43 << 10) | 259); QTest::newRow("2|33|444") << (0xc0000000 | (2 << 20) | (33 << 10) | 444); QTest::newRow("1000|1000|1000") << (0xc0000000 | (1000 << 20) | (1000 << 10) | 1000); } void tst_QPainter::fillRectRGB30() { QFETCH(uint, color); QRectF rect(0, 0, 1, 1); // Fill with CompositionMode_SourceOver tests blend_color QImage image1(1, 1, QImage::Format_A2BGR30_Premultiplied); image1.fill(Qt::transparent); QPainter painter(&image1); painter.fillRect(rect, QColor::fromRgba64(qConvertA2rgb30ToRgb64(color))); painter.end(); uint pixel1 = ((const uint*)(image1.bits()))[0]; QCOMPARE(pixel1, color); // Fill with CompositionMode_Source tests rectfill. QImage image2(1, 1, QImage::Format_RGB30); painter.begin(&image2); painter.setCompositionMode(QPainter::CompositionMode_Source); painter.fillRect(rect, QColor::fromRgba64(qConvertA2rgb30ToRgb64(color))); painter.end(); uint pixel2 = ((const uint*)(image2.bits()))[0]; QCOMPARE(pixel2, color); } void tst_QPainter::drawPath_data() { QTest::addColumn("path"); QTest::addColumn("expectedBounds"); QTest::addColumn("expectedPixels"); { QPainterPath p; p.addRect(2, 2, 10, 10); QTest::newRow("int-aligned rect") << p << QRect(2, 2, 10, 10) << 10 * 10; } { QPainterPath p; p.addRect(2.25, 2.25, 10, 10); QTest::newRow("non-aligned rect") << p << QRect(3, 3, 10, 10) << 10 * 10; } { QPainterPath p; p.addRect(2.25, 2.25, 10.5, 10.5); QTest::newRow("non-aligned rect 2") << p << QRect(3, 3, 10, 10) << 10 * 10; } { QPainterPath p; p.addRect(2.5, 2.5, 10, 10); QTest::newRow("non-aligned rect 3") << p << QRect(3, 3, 10, 10) << 10 * 10; } { QPainterPath p; p.addRect(2, 2, 10, 10); p.addRect(4, 4, 6, 6); QTest::newRow("rect-in-rect") << p << QRect(2, 2, 10, 10) << 10 * 10 - 6 * 6; } { QPainterPath p; p.addRect(2, 2, 10, 10); p.addRect(4, 4, 6, 6); p.addRect(6, 6, 2, 2); QTest::newRow("rect-in-rect-in-rect") << p << QRect(2, 2, 10, 10) << 10 * 10 - 6 * 6 + 2 * 2; } } void tst_QPainter::drawPath() { QFETCH(QPainterPath, path); QFETCH(QRect, expectedBounds); QFETCH(int, expectedPixels); const int offset = 2; QImage image(expectedBounds.width() + 2 * offset, expectedBounds.height() + 2 * offset, QImage::Format_ARGB32_Premultiplied); image.fill(QColor(Qt::white).rgb()); QPainter p(&image); p.setRenderHint(QPainter::Qt4CompatiblePainting); p.setPen(Qt::NoPen); p.setBrush(Qt::black); p.translate(offset - expectedBounds.left(), offset - expectedBounds.top()); p.drawPath(path); p.end(); const QRect paintedBounds = getPaintedSize(image, Qt::white); QCOMPARE(paintedBounds.x(), offset); QCOMPARE(paintedBounds.y(), offset); QCOMPARE(paintedBounds.width(), expectedBounds.width()); QCOMPARE(paintedBounds.height(), expectedBounds.height()); if (expectedPixels != -1) { int paintedPixels = getPaintedPixels(image, Qt::white); QCOMPARE(paintedPixels, expectedPixels); } } void tst_QPainter::drawPath2() { const int w = 50; for (int h = 5; h < 200; ++h) { QPainterPath p1, p2; p1.lineTo(w, 0); p1.lineTo(w, h); p2.lineTo(w, h); p2.lineTo(0, h); const int offset = 2; QImage image(w + 2 * offset, h + 2 * offset, QImage::Format_ARGB32_Premultiplied); image.fill(QColor(Qt::white).rgb()); QPainter p(&image); p.setPen(Qt::NoPen); p.setBrush(Qt::black); p.translate(offset, offset); p.drawPath(p1); p.end(); const int p1Pixels = getPaintedPixels(image, Qt::white); image.fill(QColor(Qt::white).rgb()); p.begin(&image); p.setPen(Qt::NoPen); p.setBrush(Qt::black); p.translate(offset, offset); p.drawPath(p2); p.end(); const int p2Pixels = getPaintedPixels(image, Qt::white); QCOMPARE(p1Pixels + p2Pixels, w * h); } } void tst_QPainter::drawPath3() { QImage imgA(100, 100, QImage::Format_RGB32); imgA.fill(0xffffff); QImage imgB = imgA; QPainterPath path; for (int y = 0; y < imgA.height(); ++y) { for (int x = 0; x < imgA.width(); ++x) { if ((x + y) & 1) { imgA.setPixel(x, y, 0); path.addRect(x, y, 1, 1); } } } QPainter p(&imgB); p.setPen(Qt::NoPen); p.setBrush(Qt::black); p.drawPath(path); p.end(); QCOMPARE(imgA, imgB); imgA.invertPixels(); imgB.fill(0xffffff); p.begin(&imgB); p.setPen(Qt::NoPen); p.setBrush(Qt::black); QRectF rect(0, 0, imgA.width(), imgA.height()); path.addRect(rect.adjusted(-10, -10, 10, 10)); p.drawPath(path); p.end(); QCOMPARE(imgA, imgB); path.setFillRule(Qt::WindingFill); imgB.fill(0xffffff); p.begin(&imgB); p.setPen(Qt::NoPen); p.setBrush(Qt::black); QRect clip = rect.adjusted(10, 10, -10, -10).toRect(); p.setClipRect(clip); p.drawPath(path); p.end(); QCOMPARE(getPaintedPixels(imgB, Qt::white), clip.width() * clip.height()); } void tst_QPainter::drawEllipse_data() { QTest::addColumn("size"); QTest::addColumn("usePen"); // The current drawEllipse algorithm (drawEllipse_midpoint_i in // qpaintengine_raster.cpp) draws ellipses that are too wide if the // ratio between width and hight is too large/small (task 114874). Those // ratios are therefore currently avoided. for (int w = 10; w < 128; w += 7) { const QByteArray wB = QByteArray::number(w); for (int h = w/2; h < qMin(2*w, 128); h += 13) { const QByteArray sB = wB + 'x' + QByteArray::number(h); QTest::newRow((sB + " with pen").constData()) << QSize(w, h) << true; QTest::newRow((sB + " no pen").constData()) << QSize(w, h) << false; } } } void tst_QPainter::drawEllipse() { QFETCH(QSize, size); QFETCH(bool, usePen); const int offset = 10; QRect rect(QPoint(offset, offset), size); QImage image(size.width() + 2 * offset, size.height() + 2 * offset, QImage::Format_ARGB32_Premultiplied); image.fill(QColor(Qt::white).rgb()); QPainter p(&image); p.setPen(usePen ? QPen(Qt::black) : QPen(Qt::NoPen)); p.setBrush(Qt::black); p.drawEllipse(rect); p.end(); QPixmap pixmap = QPixmap::fromImage(image); const QRect painted = getPaintedSize(pixmap, Qt::white); QCOMPARE(painted.x(), rect.x()); QCOMPARE(painted.y(), rect.y() + (usePen ? 0 : 1)); QCOMPARE(painted.width(), size.width() + (usePen ? 1 : 0)); QCOMPARE(painted.height(), size.height() + (usePen ? 1 : -1)); } void tst_QPainter::drawClippedEllipse_data() { QTest::addColumn("rect"); for (int w = 20; w < 128; w += 7) { const QByteArray wB = QByteArray::number(w); for (int h = w/2; h < qMin(2*w, 128); h += 13) { const QByteArray sB = wB + 'x' + QByteArray::number(h); QTest::newRow((sB + " top").constData()) << QRect(0, -h/2, w, h); QTest::newRow((sB + " topright").constData()) << QRect(w/2, -h/2, w, h); QTest::newRow((sB + " right").constData()) << QRect(w/2, 0, w, h); QTest::newRow((sB + " bottomright").constData()) << QRect(w/2, h/2, w, h); QTest::newRow((sB + " bottom").constData()) << QRect(0, h/2, w, h); QTest::newRow((sB + " bottomleft").constData()) << QRect(-w/2, h/2, w, h); QTest::newRow((sB + " left").constData()) << QRect(-w/2, 0, w, h); QTest::newRow((sB + " topleft").constData()) << QRect(-w/2, -h/2, w, h); } } } void tst_QPainter::drawClippedEllipse() { QFETCH(QRect, rect); if (sizeof(qreal) != sizeof(double)) QSKIP("Test only works for qreal==double"); QImage image(rect.width() + 1, rect.height() + 1, QImage::Format_ARGB32_Premultiplied); QRect expected = QRect(rect.x(), rect.y(), rect.width()+1, rect.height()+1) & QRect(0, 0, image.width(), image.height()); image.fill(QColor(Qt::white).rgb()); QPainter p(&image); p.drawEllipse(rect); p.end(); QPixmap pixmap = QPixmap::fromImage(image); const QRect painted = getPaintedSize(pixmap, Qt::white); QCOMPARE(painted.x(), expected.x()); QCOMPARE(painted.y(), expected.y()); QCOMPARE(painted.width(), expected.width()); QCOMPARE(painted.height(), expected.height()); } void tst_QPainter::drawRoundRect() { QFETCH(QRect, rect); QFETCH(bool, usePen); #ifdef Q_OS_MAC if (QTest::currentDataTag() == QByteArray("rect(6, 12, 3, 14) with pen") || QTest::currentDataTag() == QByteArray("rect(6, 17, 3, 25) with pen") || QTest::currentDataTag() == QByteArray("rect(10, 6, 10, 3) with pen") || QTest::currentDataTag() == QByteArray("rect(10, 12, 10, 14) with pen") || QTest::currentDataTag() == QByteArray("rect(13, 45, 17, 80) with pen") || QTest::currentDataTag() == QByteArray("rect(13, 50, 17, 91) with pen") || QTest::currentDataTag() == QByteArray("rect(17, 6, 24, 3) with pen") || QTest::currentDataTag() == QByteArray("rect(24, 12, 38, 14) with pen")) QSKIP("The Mac paint engine is off-by-one on certain rect sizes"); #endif QPixmap pixmap(rect.x() + rect.width() + 10, rect.y() + rect.height() + 10); { pixmap.fill(Qt::white); QPainter p(&pixmap); p.setRenderHint(QPainter::Qt4CompatiblePainting); p.setPen(usePen ? QPen(Qt::black) : QPen(Qt::NoPen)); p.setBrush(Qt::black); p.drawRoundRect(rect); p.end(); int increment = usePen ? 1 : 0; const QRect painted = getPaintedSize(pixmap, Qt::white); QCOMPARE(painted.width(), rect.width() + increment); QCOMPARE(painted.height(), rect.height() + increment); } } void tst_QPainter::qimageFormats_data() { QTest::addColumn("format"); QTest::newRow("QImage::Format_RGB32") << QImage::Format_RGB32; QTest::newRow("QImage::Format_ARGB32") << QImage::Format_ARGB32; QTest::newRow("QImage::Format_ARGB32_Premultiplied") << QImage::Format_ARGB32_Premultiplied; QTest::newRow("QImage::Format_RGB16") << QImage::Format_RGB16; QTest::newRow("Qimage::Format_ARGB8565_Premultiplied") << QImage::Format_ARGB8565_Premultiplied; QTest::newRow("Qimage::Format_RGB666") << QImage::Format_RGB666; QTest::newRow("Qimage::Format_RGB555") << QImage::Format_RGB555; QTest::newRow("Qimage::Format_ARGB8555_Premultiplied") << QImage::Format_ARGB8555_Premultiplied; QTest::newRow("Qimage::Format_RGB888") << QImage::Format_RGB888; QTest::newRow("Qimage::Format_A2RGB30_Premultiplied") << QImage::Format_A2RGB30_Premultiplied; QTest::newRow("Qimage::Format_RGB30") << QImage::Format_RGB30; } /* Tests that QPainter can paint on various QImage formats. */ void tst_QPainter::qimageFormats() { QFETCH(QImage::Format, format); const QSize size(100, 100); QImage image(size, format); image.fill(0); const QColor testColor(Qt::red); QPainter p(&image); QVERIFY(p.isActive()); p.setBrush(QBrush(testColor)); p.drawRect(QRect(QPoint(0,0), size)); QCOMPARE(image.pixel(50, 50), testColor.rgb()); } void tst_QPainter::fillData() { QTest::addColumn("rect"); QTest::addColumn("usePen"); for (int w = 3; w < 50; w += 7) { const QByteArray wB = QByteArray::number(w); for (int h = 3; h < 50; h += 11) { int x = w/2 + 5; int y = h/2 + 5; const QByteArray rB = "rect(" + QByteArray::number(x) + ", " + QByteArray::number(y) + ", " + QByteArray::number(w) + ", " + QByteArray::number(h) + ')'; QTest::newRow((rB + " with pen").constData()) << QRect(x, y, w, h) << true; QTest::newRow((rB + " no pen").constData()) << QRect(x, y, w, h) << false; } } } /* Test that drawline works properly after setWindow has been called. */ void tst_QPainter::setWindow() { QPixmap pixmap(600, 600); pixmap.fill(QColor(Qt::white)); QPainter painter(&pixmap); painter.setRenderHint(QPainter::Qt4CompatiblePainting); painter.setWindow(0, 0, 3, 3); painter.drawLine(1, 1, 2, 2); const QRect painted = getPaintedSize(pixmap, Qt::white); QVERIFY(195 < painted.y() && painted.y() < 205); // correct value is around 200 QVERIFY(195 < painted.height() && painted.height() < 205); // correct value is around 200 } void tst_QPainter::combinedMatrix() { QPixmap pm(64, 64); QPainter p(&pm); p.setWindow(0, 0, 1, 1); p.setViewport(32, 0, 32, 32); p.translate(0.5, 0.5); QMatrix cm = p.combinedMatrix(); QPointF pt = QPointF(0, 0) * cm; QCOMPARE(pt.x(), 48.0); QCOMPARE(pt.y(), 16.0); } void tst_QPainter::textOnTransparentImage() { bool foundPixel = false; QImage image(10, 10, QImage::Format_ARGB32_Premultiplied); image.fill(qRgba(0, 0, 0, 0)); // transparent { QPainter painter(&image); painter.setPen(QColor(255, 255, 255)); painter.drawText(0, 10, "W"); } for (int x = 0; x < image.width(); ++x) for (int y = 0; y < image.height(); ++y) if (image.pixel(x, y) != 0) foundPixel = true; QVERIFY(foundPixel); } void tst_QPainter::renderHints() { QImage img(1, 1, QImage::Format_RGB32); QPainter p(&img); // Turn off all... p.setRenderHints(QPainter::RenderHints(0xffffffff), false); QCOMPARE(p.renderHints(), QPainter::RenderHints(0)); // Single set/get p.setRenderHint(QPainter::Antialiasing); QVERIFY(p.renderHints() & QPainter::Antialiasing); p.setRenderHint(QPainter::Antialiasing, false); QVERIFY(!(p.renderHints() & QPainter::Antialiasing)); // Multi set/get p.setRenderHints(QPainter::Antialiasing | QPainter::SmoothPixmapTransform); QVERIFY(p.renderHints() & (QPainter::Antialiasing | QPainter::SmoothPixmapTransform)); p.setRenderHints(QPainter::Antialiasing | QPainter::SmoothPixmapTransform, false); QVERIFY(!(p.renderHints() & (QPainter::Antialiasing | QPainter::SmoothPixmapTransform))); } int countPixels(const QImage &img, const QRgb &color) { int count = 0; for (int y = 0; y < img.height(); ++y) { for (int x = 0; x < img.width(); ++x) { count += ((img.pixel(x, y) & 0xffffff) == color); } } return count; } template void testClipping(QImage &img) { QPainterPath a, b; a.addRect(QRect(2, 2, 4, 4)); b.addRect(QRect(4, 4, 4, 4)); QPainter p(&img); p.end(); img.fill(0x0); p.begin(&img); p.setClipPath(a); p.setClipPath(b, Qt::IntersectClip); p.setClipping(false); p.setPen(Qt::NoPen); p.setBrush(QColor(0xff0000)); p.drawRect(T(0, 0, 10, 10)); p.setClipping(true); p.setBrush(QColor(0x00ff00)); p.drawRect(T(0, 0, 10, 10)); QCOMPARE(countPixels(img, 0xff0000), 96); QCOMPARE(countPixels(img, 0x00ff00), 4); } void tst_QPainter::disableEnableClipping() { QImage img(10, 10, QImage::Format_RGB32); testClipping(img); testClipping(img); } void tst_QPainter::setClipRect() { QImage img(10, 10, QImage::Format_RGB32); // simple test to let valgrind check for buffer overflow { QPainter p(&img); p.setClipRect(-10, -10, 100, 100); p.fillRect(-10, -10, 100, 100, QBrush(QColor(Qt::red))); } // rects with negative width/height { QPainter p(&img); p.setClipRect(QRect(10, 10, -10, 10)); QVERIFY(p.clipRegion().isEmpty()); p.setClipRect(QRect(10, 10, 10, -10)); QVERIFY(p.clipRegion().isEmpty()); p.setClipRect(QRectF(10.5, 10.5, -10.5, 10.5)); QVERIFY(p.clipRegion().isEmpty()); p.setClipRect(QRectF(10.5, 10.5, 10.5, -10.5)); QVERIFY(p.clipRegion().isEmpty()); } } /* This tests the two different clipping approaches in QRasterPaintEngine, one when using a QRegion and one when using a QPainterPath. They should give equal results. */ void tst_QPainter::setEqualClipRegionAndPath_data() { QTest::addColumn("deviceSize"); QTest::addColumn("region"); QTest::newRow("empty") << QSize(100, 100) << QRegion(); QTest::newRow("simple rect") << QSize(100, 100) << QRegion(QRect(5, 5, 10, 10)); QVector rects; QRegion region; rects << QRect(5, 5, 10, 10) << QRect(20, 20, 10, 10); region.setRects(rects.constData(), rects.size()); QTest::newRow("two rects") << QSize(100, 100) << region; rects.clear(); rects << QRect(5, 5, 10, 10) << QRect(20, 5, 10, 10); region.setRects(rects.constData(), rects.size()); QTest::newRow("two x-adjacent rects") << QSize(100, 100) << region; rects.clear(); rects << QRect(0, 0, 10, 100) << QRect(12, 0, 10, 100); region.setRects(rects.constData(), rects.size()); QTest::newRow("two x-adjacent rects 2") << QSize(100, 100) << region; rects.clear(); rects << QRect(0, 0, 10, 100) << QRect(12, 0, 10, 100); region.setRects(rects.constData(), rects.size()); QTest::newRow("two x-adjacent rects 3") << QSize(50, 50) << region; rects.clear(); rects << QRect(0, 0, 10, 100) << QRect(12, 0, 10, 100); region.setRects(rects.constData(), rects.size()); QTest::newRow("two x-adjacent rects 4") << QSize(101, 101) << region; region = QRegion(QRect(0, 0, 200, 200), QRegion::Ellipse); QTest::newRow("ellipse") << QSize(190, 200) << region; region ^= QRect(50, 50, 50, 50); QTest::newRow("ellipse 2") << QSize(200, 200) << region; } void tst_QPainter::setEqualClipRegionAndPath() { QFETCH(QSize, deviceSize); QFETCH(QRegion, region); QPainterPath path; path.addRegion(region); QImage img1(deviceSize.width(), deviceSize.height(), QImage::Format_ARGB32); QImage img2(deviceSize.width(), deviceSize.height(), QImage::Format_ARGB32); img1.fill(0x12345678); img2.fill(0x12345678); { QPainter p(&img1); p.setClipRegion(region); p.fillRect(0, 0, img1.width(), img1.height(), QColor(Qt::red)); } { QPainter p(&img2); p.setClipPath(path); p.fillRect(0, 0, img2.width(), img2.height(), QColor(Qt::red)); } QCOMPARE(img1, img2); // rotated img1.fill(0x12345678); img2.fill(0x12345678); { QPainter p(&img1); p.rotate(25); p.setClipRegion(region); p.fillRect(0, 0, img1.width(), img1.height(), QColor(Qt::red)); } { QPainter p(&img2); p.rotate(25); p.setClipPath(path); p.fillRect(0, 0, img2.width(), img2.height(), QColor(Qt::red)); } QCOMPARE(img1, img2); img1.fill(0x12345678); img2.fill(0x12345678); // simple intersectclip img1.fill(0x12345678); img2.fill(0x12345678); { QPainter p(&img1); p.setClipRegion(region); p.setClipRegion(region, Qt::IntersectClip); p.fillRect(0, 0, img1.width(), img1.height(), QColor(Qt::red)); } { QPainter p(&img2); p.setClipPath(path); p.setClipPath(path, Qt::IntersectClip); p.fillRect(0, 0, img2.width(), img2.height(), QColor(Qt::red)); } QCOMPARE(img1, img2); img1.fill(0x12345678); img2.fill(0x12345678); { QPainter p(&img1); p.setClipPath(path); p.setClipRegion(region, Qt::IntersectClip); p.fillRect(0, 0, img1.width(), img1.height(), QColor(Qt::red)); } { QPainter p(&img2); p.setClipRegion(region); p.setClipPath(path, Qt::IntersectClip); p.fillRect(0, 0, img2.width(), img2.height(), QColor(Qt::red)); } QCOMPARE(img1, img2); } void tst_QPainter::clippedFillPath_data() { QTest::addColumn("imageSize"); QTest::addColumn("path"); QTest::addColumn("clipRect"); QTest::addColumn("brush"); QTest::addColumn("pen"); QLinearGradient gradient(QPoint(0, 0), QPoint(100, 100)); gradient.setColorAt(0, Qt::red); gradient.setColorAt(1, Qt::blue); QPen pen2(QColor(223, 223, 0, 223)); pen2.setWidth(2); QPainterPath path; path.addRect(QRect(15, 15, 50, 50)); QTest::newRow("simple rect 0") << QSize(100, 100) << path << QRect(15, 15, 49, 49) << QBrush(Qt::NoBrush) << QPen(Qt::black); QTest::newRow("simple rect 1") << QSize(100, 100) << path << QRect(15, 15, 50, 50) << QBrush(Qt::NoBrush) << QPen(Qt::black); QTest::newRow("simple rect 2") << QSize(100, 100) << path << QRect(15, 15, 51, 51) << QBrush(Qt::NoBrush) << QPen(Qt::black); QTest::newRow("simple rect 3") << QSize(100, 100) << path << QRect(15, 15, 51, 51) << QBrush(QColor(Qt::blue)) << QPen(Qt::NoPen); QTest::newRow("simple rect 4") << QSize(100, 100) << path << QRect(15, 15, 51, 51) << QBrush(gradient) << pen2; path = QPainterPath(); path.addEllipse(QRect(15, 15, 50, 50)); QTest::newRow("ellipse 0") << QSize(100, 100) << path << QRect(15, 15, 49, 49) << QBrush(Qt::NoBrush) << QPen(Qt::black); QTest::newRow("ellipse 1") << QSize(100, 100) << path << QRect(15, 15, 50, 50) << QBrush(Qt::NoBrush) << QPen(Qt::black); QTest::newRow("ellipse 2") << QSize(100, 100) << path << QRect(15, 15, 51, 51) << QBrush(Qt::NoBrush) << QPen(Qt::black); QTest::newRow("ellipse 3") << QSize(100, 100) << path << QRect(15, 15, 51, 51) << QBrush(QColor(Qt::blue)) << QPen(Qt::NoPen); QTest::newRow("ellipse 4") << QSize(100, 100) << path << QRect(15, 15, 51, 51) << QBrush(gradient) << pen2; path = QPainterPath(); path.addRoundRect(QRect(15, 15, 50, 50), 20); QTest::newRow("round rect 0") << QSize(100, 100) << path << QRect(15, 15, 49, 49) << QBrush(Qt::NoBrush) << QPen(Qt::black); QTest::newRow("round rect 1") << QSize(100, 100) << path << QRect(15, 15, 50, 50) << QBrush(Qt::NoBrush) << QPen(Qt::black); QTest::newRow("round rect 2") << QSize(100, 100) << path << QRect(15, 15, 51, 51) << QBrush(Qt::NoBrush) << QPen(Qt::black); QTest::newRow("round rect 3") << QSize(100, 100) << path << QRect(15, 15, 51, 51) << QBrush(QColor(Qt::blue)) << QPen(Qt::NoPen); QTest::newRow("round rect 4") << QSize(100, 100) << path << QRect(15, 15, 51, 51) << QBrush(gradient) << pen2; path = QPainterPath(); path.moveTo(15, 50); path.cubicTo(40, 50, 40, 15, 65, 50); path.lineTo(15, 50); QTest::newRow("cubic 0") << QSize(100, 100) << path << QRect(15, 15, 49, 49) << QBrush(Qt::NoBrush) << QPen(Qt::black); QTest::newRow("cubic 1") << QSize(100, 100) << path << QRect(15, 15, 50, 50) << QBrush(Qt::NoBrush) << QPen(Qt::black); QTest::newRow("cubic 2") << QSize(100, 100) << path << QRect(15, 15, 51, 51) << QBrush(Qt::NoBrush) << QPen(Qt::black); QTest::newRow("cubic 3") << QSize(100, 100) << path << QRect(15, 15, 51, 51) << QBrush(QColor(Qt::blue)) << QPen(Qt::NoPen); QTest::newRow("cubic 4") << QSize(100, 100) << path << QRect(15, 15, 51, 51) << QBrush(gradient) << pen2; } void tst_QPainter::clippedFillPath() { QFETCH(QSize, imageSize); QFETCH(QPainterPath, path); QFETCH(QRect, clipRect); QPainterPath clipPath; clipPath.addRect(clipRect); QFETCH(QBrush, brush); QFETCH(QPen, pen); const int width = imageSize.width(); const int height = imageSize.height(); QImage clippedRect(width, height, QImage::Format_ARGB32_Premultiplied); clippedRect.fill(0x12345678); { QPainter painter(&clippedRect); painter.setPen(pen); painter.setBrush(brush); painter.setClipRect(clipRect); painter.drawPath(path); } QImage clippedPath(width, height, QImage::Format_ARGB32_Premultiplied); clippedPath.fill(0x12345678); { QPainter painter(&clippedPath); painter.setPen(pen); painter.setBrush(brush); painter.setClipPath(clipPath); painter.drawPath(path); } QCOMPARE(clippedRect, clippedPath); // repeat with antialiasing clippedRect.fill(0x12345678); { QPainter painter(&clippedRect); painter.setRenderHint(QPainter::Antialiasing); painter.setPen(pen); painter.setBrush(brush); painter.setClipRect(clipRect); painter.drawPath(path); } clippedPath.fill(0x12345678); { QPainter painter(&clippedPath); painter.setRenderHint(QPainter::Antialiasing); painter.setPen(pen); painter.setBrush(brush); painter.setClipPath(clipPath); painter.drawPath(path); } QCOMPARE(clippedRect, clippedPath); } void tst_QPainter::clippedLines_data() { QTest::addColumn("imageSize"); QTest::addColumn("line"); QTest::addColumn("clipRect"); QTest::addColumn("pen"); QPen pen2(QColor(223, 223, 0, 223)); pen2.setWidth(2); QVector lines; lines << QLineF(15, 15, 65, 65) << QLineF(14, 14, 66, 66) << QLineF(16, 16, 64, 64) << QLineF(65, 65, 15, 15) << QLineF(66, 66, 14, 14) << QLineF(64, 64, 14, 14) << QLineF(15, 50, 15, 64) << QLineF(15, 50, 15, 65) << QLineF(15, 50, 15, 66) << QLineF(15, 50, 64, 50) << QLineF(15, 50, 65, 50) << QLineF(15, 50, 66, 50); foreach (QLineF line, lines) { const QByteArray desc = "line (" + QByteArray::number(line.x1()) + ", " + QByteArray::number(line.y1()) + ", " + QByteArray::number(line.x2()) + ", " + QByteArray::number(line.y2()) + ") "; QTest::newRow((desc + '0').constData()) << QSize(100, 100) << line << QRect(15, 15, 49, 49) << QPen(Qt::black); QTest::newRow((desc + '1').constData()) << QSize(100, 100) << line << QRect(15, 15, 50, 50) << QPen(Qt::black); QTest::newRow((desc + '2').constData()) << QSize(100, 100) << line << QRect(15, 15, 51, 51) << QPen(Qt::black); QTest::newRow((desc + '3').constData()) << QSize(100, 100) << line << QRect(15, 15, 51, 51) << QPen(Qt::NoPen); QTest::newRow((desc + '4').constData()) << QSize(100, 100) << line << QRect(15, 15, 51, 51) << pen2; } } void tst_QPainter::clippedLines() { QFETCH(QSize, imageSize); QFETCH(QLineF, line); QFETCH(QRect, clipRect); QPainterPath clipPath; clipPath.addRect(clipRect); QFETCH(QPen, pen); const int width = imageSize.width(); const int height = imageSize.height(); QImage clippedRect(width, height, QImage::Format_ARGB32_Premultiplied); clippedRect.fill(0x12345678); { QPainter painter(&clippedRect); painter.setPen(pen); painter.setClipRect(clipRect); painter.drawLine(line); painter.drawLine(line.toLine()); } QImage clippedPath(width, height, QImage::Format_ARGB32_Premultiplied); clippedPath.fill(0x12345678); { QPainter painter(&clippedPath); painter.setPen(pen); painter.setClipPath(clipPath); painter.drawLine(line); painter.drawLine(line.toLine()); } QCOMPARE(clippedRect, clippedPath); // repeat with antialiasing clippedRect.fill(0x12345678); { QPainter painter(&clippedRect); painter.setRenderHint(QPainter::Antialiasing); painter.setPen(pen); painter.setClipRect(clipRect); painter.drawLine(line); painter.drawLine(line.toLine()); } clippedPath.fill(0x12345678); { QPainter painter(&clippedPath); painter.setRenderHint(QPainter::Antialiasing); painter.setPen(pen); painter.setClipPath(clipPath); painter.drawLine(line); painter.drawLine(line.toLine()); } QCOMPARE(clippedRect, clippedPath); } void tst_QPainter::clippedPolygon_data() { clippedFillPath_data(); }; void tst_QPainter::clippedPolygon() { QFETCH(QSize, imageSize); QFETCH(QPainterPath, path); QPolygonF polygon = path.toFillPolygon(); QFETCH(QRect, clipRect); QPainterPath clipPath; clipPath.addRect(clipRect); QFETCH(QPen, pen); QFETCH(QBrush, brush); const int width = imageSize.width(); const int height = imageSize.height(); QImage clippedRect(width, height, QImage::Format_ARGB32_Premultiplied); clippedRect.fill(0x12345678); { QPainter painter(&clippedRect); painter.setPen(pen); painter.setBrush(brush); painter.setClipRect(clipRect); painter.drawPolygon(polygon); painter.drawPolygon(polygon.toPolygon()); } QImage clippedPath(width, height, QImage::Format_ARGB32_Premultiplied); clippedPath.fill(0x12345678); { QPainter painter(&clippedPath); painter.setPen(pen); painter.setBrush(brush); painter.setClipRect(clipRect); painter.drawPolygon(polygon); painter.drawPolygon(polygon.toPolygon()); } QCOMPARE(clippedRect, clippedPath); // repeat with antialiasing clippedRect.fill(0x12345678); { QPainter painter(&clippedRect); painter.setRenderHint(QPainter::Antialiasing); painter.setPen(pen); painter.setBrush(brush); painter.setClipRect(clipRect); painter.drawPolygon(polygon); painter.drawPolygon(polygon.toPolygon()); } clippedPath.fill(0x12345678); { QPainter painter(&clippedPath); painter.setRenderHint(QPainter::Antialiasing); painter.setPen(pen); painter.setBrush(brush); painter.setClipRect(clipRect); painter.drawPolygon(polygon); painter.drawPolygon(polygon.toPolygon()); } QCOMPARE(clippedRect, clippedPath); } // this just draws some text that should be clipped in the raster // paint engine. void tst_QPainter::clippedText() { for (char ch = 'A'; ch < 'Z'; ++ch) { //qDebug() << ch; QFont f; f.setPixelSize(24); QFontMetrics metrics(f); QRect textRect = metrics.boundingRect(QChar(ch)); if (textRect.width() <= 8) continue; if (textRect.height() <= 8) continue; QRect imageRect = textRect.adjusted(4, 4, -4, -4); QImage image(imageRect.size(), QImage::Format_ARGB32_Premultiplied); image.fill(qRgba(255, 255, 255, 255)); { QPainter painter(&image); painter.setFont(f); painter.setPen(Qt::black); painter.drawText(0, 0, QChar(ch)); } image.fill(qRgba(255, 255, 255, 255)); { QPainter painter(&image); painter.setFont(f); painter.setPen(Qt::black); painter.drawText(-imageRect.topLeft(), QChar(ch)); } bool foundPixel = false; for (int x = 0; x < image.width(); ++x) for (int y = 0; y < image.height(); ++y) if (image.pixel(x, y) != 0) foundPixel = true; // can't QVERIFY(foundPixel) as sometimes all pixels are clipped // away. For example for 'O' // just call /some/ function to prevent the compiler from optimizing // foundPixel away QString::number(foundPixel); //image.save(QString("debug") + ch + ".xpm"); } QVERIFY(true); // reached, don't trigger any valgrind errors } void tst_QPainter::setOpacity_data() { QTest::addColumn("destFormat"); QTest::addColumn("srcFormat"); QTest::newRow("ARGB32P on ARGB32P") << QImage::Format_ARGB32_Premultiplied << QImage::Format_ARGB32_Premultiplied; QTest::newRow("ARGB32 on ARGB32") << QImage::Format_ARGB32 << QImage::Format_ARGB32; QTest::newRow("RGB32 on RGB32") << QImage::Format_RGB32 << QImage::Format_RGB32; QTest::newRow("RGB16 on RGB16") << QImage::Format_RGB16 << QImage::Format_RGB16; QTest::newRow("ARGB8565_Premultiplied on ARGB8565_Premultiplied") << QImage::Format_ARGB8565_Premultiplied << QImage::Format_ARGB8565_Premultiplied; QTest::newRow("RGB555 on RGB555") << QImage::Format_RGB555 << QImage::Format_RGB555; QTest::newRow("RGB666 on RGB666") << QImage::Format_RGB666 << QImage::Format_RGB666; QTest::newRow("ARGB8555_Premultiplied on ARGB8555_Premultiplied") << QImage::Format_ARGB8555_Premultiplied << QImage::Format_ARGB8555_Premultiplied; QTest::newRow("RGB888 on RGB888") << QImage::Format_RGB888 << QImage::Format_RGB888; QTest::newRow("RGB32 on RGB16") << QImage::Format_RGB16 << QImage::Format_RGB32; QTest::newRow("RGB32 on ARGB8565_Premultiplied") << QImage::Format_ARGB8565_Premultiplied << QImage::Format_RGB32; QTest::newRow("RGB32 on RGB666") << QImage::Format_RGB666 << QImage::Format_RGB32; QTest::newRow("RGB32 on RGB555") << QImage::Format_RGB555 << QImage::Format_RGB32; QTest::newRow("RGB32 on ARGB8555_Premultiplied") << QImage::Format_ARGB8555_Premultiplied << QImage::Format_RGB32; QTest::newRow("RGB32 on RGB888") << QImage::Format_RGB888 << QImage::Format_RGB32; QTest::newRow("RGB16 on RGB32") << QImage::Format_RGB32 << QImage::Format_RGB16; QTest::newRow("ARGB8565_Premultiplied on RGB32") << QImage::Format_RGB32 << QImage::Format_ARGB8565_Premultiplied; QTest::newRow("RGB666 on RGB32") << QImage::Format_RGB32 << QImage::Format_RGB666; QTest::newRow("RGB555 on RGB32") << QImage::Format_RGB32 << QImage::Format_RGB555; QTest::newRow("ARGB8555_Premultiplied on RGB32") << QImage::Format_RGB32 << QImage::Format_ARGB8555_Premultiplied; QTest::newRow("RGB888 on RGB32") << QImage::Format_RGB32 << QImage::Format_RGB888; QTest::newRow("RGB555 on RGB888") << QImage::Format_RGB888 << QImage::Format_RGB555; QTest::newRow("RGB666 on RGB888") << QImage::Format_RGB888 << QImage::Format_RGB666; QTest::newRow("RGB444 on RGB444") << QImage::Format_RGB444 << QImage::Format_RGB444; QTest::newRow("RGBA8888P on RGBA8888P") << QImage::Format_RGBA8888_Premultiplied << QImage::Format_RGBA8888_Premultiplied; QTest::newRow("RGBA8888 on RGBA8888") << QImage::Format_RGBA8888 << QImage::Format_RGBA8888; QTest::newRow("RGBx8888 on RGBx8888") << QImage::Format_RGBX8888 << QImage::Format_RGBX8888; QTest::newRow("RGBA8888P on ARGB32P") << QImage::Format_ARGB32_Premultiplied << QImage::Format_RGBA8888_Premultiplied; QTest::newRow("RGBx8888 on ARGB32P") << QImage::Format_ARGB32_Premultiplied << QImage::Format_RGBX8888; QTest::newRow("ARGB32P on RGBA8888P") << QImage::Format_RGBA8888_Premultiplied << QImage::Format_ARGB32_Premultiplied; QTest::newRow("RGB32 on RGBx8888") << QImage::Format_RGBX8888 << QImage::Format_RGB32; QTest::newRow("RGB30 on RGB32") << QImage::Format_RGB32 << QImage::Format_BGR30; QTest::newRow("BGR30 on ARGB32P") << QImage::Format_ARGB32_Premultiplied << QImage::Format_BGR30; QTest::newRow("A2RGB30P on ARGB32P") << QImage::Format_ARGB32_Premultiplied << QImage::Format_A2BGR30_Premultiplied; QTest::newRow("A2RGB30P on A2RGB30P") << QImage::Format_A2RGB30_Premultiplied << QImage::Format_A2RGB30_Premultiplied; QTest::newRow("ARGB32P on A2RGB30P") << QImage::Format_A2RGB30_Premultiplied << QImage::Format_ARGB32_Premultiplied; QTest::newRow("RGB32 on A2BGR30P") << QImage::Format_A2BGR30_Premultiplied << QImage::Format_RGB32; QTest::newRow("RGB30 on A2BGR30P") << QImage::Format_A2BGR30_Premultiplied << QImage::Format_RGB30; QTest::newRow("A2RGB30P on A2BGR30P") << QImage::Format_A2BGR30_Premultiplied << QImage::Format_A2RGB30_Premultiplied; QTest::newRow("ARGB32P on BGR30") << QImage::Format_BGR30 << QImage::Format_ARGB32_Premultiplied; QTest::newRow("ARGB32P on RGB30") << QImage::Format_RGB30 << QImage::Format_ARGB32_Premultiplied; QTest::newRow("A2RGB30P on RGB30") << QImage::Format_RGB30 << QImage::Format_A2RGB30_Premultiplied; QTest::newRow("RGBA64P on RGBA64P") << QImage::Format_RGBA64_Premultiplied << QImage::Format_RGBA64_Premultiplied; QTest::newRow("RGBA64 on RGBA64") << QImage::Format_RGBA64 << QImage::Format_RGBA64; QTest::newRow("RGBx64 on RGBx64") << QImage::Format_RGBX64 << QImage::Format_RGBX64; QTest::newRow("RGBA64P on ARGB32P") << QImage::Format_ARGB32_Premultiplied << QImage::Format_RGBA64_Premultiplied; QTest::newRow("RGBx64 on ARGB32P") << QImage::Format_ARGB32_Premultiplied << QImage::Format_RGBX64; QTest::newRow("ARGB32P on RGBA64P") << QImage::Format_RGBA64_Premultiplied << QImage::Format_ARGB32_Premultiplied; } void tst_QPainter::setOpacity() { QFETCH(QImage::Format, destFormat); QFETCH(QImage::Format, srcFormat); const QSize imageSize(12, 12); const QRect imageRect(QPoint(0, 0), imageSize); QColor destColor = Qt::black; QColor srcColor = Qt::white; QImage dest(imageSize, destFormat); QImage src(imageSize, srcFormat); QPainter p; p.begin(&dest); p.fillRect(imageRect, destColor); p.end(); p.begin(&src); p.fillRect(imageRect, srcColor); p.end(); p.begin(&dest); p.setOpacity(0.5); p.drawImage(imageRect, src, imageRect); p.end(); QImage actual = dest.convertToFormat(QImage::Format_RGB32); for (int y = 0; y < actual.height(); ++y) { QRgb *p = (QRgb *)actual.scanLine(y); for (int x = 0; x < actual.width(); ++x) { QVERIFY(qAbs(qRed(p[x]) - 127) <= 0xf); QVERIFY(qAbs(qGreen(p[x]) - 127) <= 0xf); QVERIFY(qAbs(qBlue(p[x]) - 127) <= 0xf); } } } void tst_QPainter::drawhelper_blend_untransformed_data() { setOpacity_data(); } void tst_QPainter::drawhelper_blend_untransformed() { QFETCH(QImage::Format, destFormat); QFETCH(QImage::Format, srcFormat); const int size = 128; const QSize imageSize(size, size); const QRect paintRect(1, 0, size - 2, size); // needs alignment and tailing QColor destColor(127, 127, 127); QColor srcColor(Qt::white); QImage dest(imageSize, destFormat); QImage src(imageSize, srcFormat); QPainter p; p.begin(&src); p.fillRect(paintRect, srcColor); p.end(); QList opacities = (QList() << 0.0 << 0.1 << 0.01 << 0.4 << 0.5 << 0.6 << 0.9 << 1.0); foreach (qreal opacity, opacities) { p.begin(&dest); p.fillRect(paintRect, destColor); p.setOpacity(opacity); p.drawImage(paintRect, src, paintRect); p.end(); // sanity check: make sure all pixels are equal QImage expected(size - 2, size, destFormat); p.begin(&expected); p.fillRect(0, 0, expected.width(), expected.height(), dest.pixelColor(1, 0)); p.end(); const QImage subDest(dest.bits() + dest.depth() / 8, dest.width() - 2, dest.height(), dest.bytesPerLine(), dest.format()); if (dest.format() == QImage::Format_ARGB8565_Premultiplied || dest.format() == QImage::Format_ARGB8555_Premultiplied) { // Test skipped due to rounding errors... continue; } QCOMPARE(subDest, expected); } } void tst_QPainter::drawhelper_blend_tiled_untransformed_data() { setOpacity_data(); } void tst_QPainter::drawhelper_blend_tiled_untransformed() { QFETCH(QImage::Format, destFormat); QFETCH(QImage::Format, srcFormat); const int size = 128; const QSize imageSize(size, size); const QRect paintRect(1, 0, size - 2, size); // needs alignment and tailing QColor destColor(127, 127, 127); QColor srcColor(Qt::white); QImage dest(imageSize, destFormat); QImage src(imageSize / 2, srcFormat); QPainter p; p.begin(&src); p.fillRect(QRect(QPoint(0, 0), imageSize/ 2), srcColor); p.end(); const QBrush brush(src); QList opacities = (QList() << 0.0 << 0.1 << 0.01 << 0.4 << 0.5 << 0.6 << 0.9 << 1.0); foreach (qreal opacity, opacities) { p.begin(&dest); p.fillRect(paintRect, destColor); p.setOpacity(opacity); p.fillRect(paintRect, brush); p.end(); // sanity check: make sure all pixels are equal QImage expected(size - 2, size, destFormat); p.begin(&expected); p.fillRect(0, 0, expected.width(), expected.height(), dest.pixelColor(1, 0)); p.end(); const QImage subDest(dest.bits() + dest.depth() / 8, dest.width() - 2, dest.height(), dest.bytesPerLine(), dest.format()); if (dest.format() == QImage::Format_ARGB8565_Premultiplied || dest.format() == QImage::Format_ARGB8555_Premultiplied) { // Skipping test due to rounding errors. Test needs rewrite continue; } QCOMPARE(subDest, expected); } } static QPaintEngine::PaintEngineFeatures no_porter_duff() { QPaintEngine::PaintEngineFeatures features = QPaintEngine::AllFeatures; return features & ~QPaintEngine::PorterDuff; } class DummyPaintEngine : public QPaintEngine, public QPaintDevice { public: DummyPaintEngine() : QPaintEngine(no_porter_duff()) {} virtual bool begin(QPaintDevice *) { return true; } virtual bool end() { return true; } virtual void updateState(const QPaintEngineState &) {} virtual void drawPixmap(const QRectF &, const QPixmap &, const QRectF &) {} virtual Type type() const { return User; } virtual QPaintEngine *paintEngine() const { return (QPaintEngine *)this; } virtual int metric(PaintDeviceMetric metric) const { Q_UNUSED(metric); return 0; }; }; static bool success; void porterDuff_warningChecker(QtMsgType type, const QMessageLogContext &, const QString &msg) { if (type == QtWarningMsg && msg == QLatin1String("QPainter::setCompositionMode: PorterDuff modes not supported on device")) success = false; } void tst_QPainter::porterDuff_warning() { QtMessageHandler old = qInstallMessageHandler(porterDuff_warningChecker); DummyPaintEngine dummy; QPainter p(&dummy); success = true; p.setCompositionMode(QPainter::CompositionMode_Source); QVERIFY(success); success = true; p.setCompositionMode(QPainter::CompositionMode_SourceOver); QVERIFY(success); success = true; p.setCompositionMode(QPainter::CompositionMode_DestinationOver); QVERIFY(!success); QVERIFY(qInstallMessageHandler(old) == porterDuff_warningChecker); } void tst_QPainter::drawhelper_blend_color() { QImage dest(32, 32, QImage::Format_ARGB8555_Premultiplied); dest.fill(0xff000000); { QPainter p(&dest); p.fillRect(0, 0, dest.width(), dest.height(), QColor(255, 0, 0, 127)); } QImage expected(32, 32, QImage::Format_ARGB8555_Premultiplied); expected.fill(0xff3c007f); QCOMPARE(dest.pixel(1, 1), expected.pixel(1, 1)); QCOMPARE(dest, expected); } #ifndef QT_NO_WIDGETS class ViewportTestWidget : public QWidget { public: ViewportTestWidget(QWidget *parent = 0) : QWidget(parent), hasPainted(false) {} QSize sizeHint() const { return QSize(100, 100); } QRect viewport; bool hasPainted; protected: void paintEvent(QPaintEvent *) { hasPainted = true; QPainter p(this); viewport = p.viewport(); } }; void tst_QPainter::childWidgetViewport() { QWidget parent; parent.setAutoFillBackground(true); parent.resize(200, 200); ViewportTestWidget child(&parent); child.setAutoFillBackground(true); parent.show(); parent.update(); qApp->processEvents(); if (child.hasPainted) { QCOMPARE(child.viewport, QRect(QPoint(0, 0), child.sizeHint())); } else { qWarning("Failed to ensure that paintEvent has been run. Could not run test."); } } #endif void tst_QPainter::fillRect_objectBoundingModeGradient() { QImage a(10, 10, QImage::Format_ARGB32_Premultiplied); a.fill(0x0); QImage b = a; QLinearGradient g(QPoint(0, 0), QPoint(0, 1)); g.setColorAt(0, Qt::red); g.setColorAt(1, Qt::blue); g.setCoordinateMode(QGradient::ObjectBoundingMode); QPainter p(&a); p.fillRect(QRect(0, 0, a.width(), a.height()), g); p.end(); QPainterPath path; path.addRect(0, 0, a.width(), a.height()); p.begin(&b); p.fillPath(path, g); p.end(); QCOMPARE(a, b); } void tst_QPainter::fillRect_stretchToDeviceMode() { QImage img(64, 64, QImage::Format_ARGB32_Premultiplied); QLinearGradient g(QPoint(0, 0), QPoint(0, 1)); g.setCoordinateMode(QGradient::StretchToDeviceMode); QPainter p(&img); p.fillRect(img.rect(), g); p.end(); for (int i = 1; i < img.height(); ++i) QVERIFY(img.pixel(0, i) != img.pixel(0, i-1)); } void tst_QPainter::monoImages() { Qt::GlobalColor colorPairs[][2] = { { Qt::white, Qt::black }, { Qt::color0, Qt::color1 }, { Qt::red, Qt::blue } }; const int numColorPairs = sizeof(colorPairs) / sizeof(QRgb[2]); QImage transparent(2, 2, QImage::Format_ARGB32_Premultiplied); transparent.fill(0x0); for (int i = 1; i < QImage::NImageFormats; ++i) { for (int j = 0; j < numColorPairs; ++j) { const QImage::Format format = QImage::Format(i); if (format == QImage::Format_Indexed8) continue; QImage img(2, 2, format); if (img.colorCount() > 0) { img.setColor(0, QColor(colorPairs[j][0]).rgba()); img.setColor(1, QColor(colorPairs[j][1]).rgba()); } img.fill(0x0); QPainter p(&img); p.fillRect(0, 0, 2, 2, colorPairs[j][0]); p.fillRect(0, 0, 1, 1, colorPairs[j][1]); p.fillRect(1, 1, 1, 1, colorPairs[j][1]); p.end(); QImage original = img; p.begin(&img); p.drawImage(0, 0, transparent); p.end(); // drawing a transparent image on top of another image // should not change the image QCOMPARE(original, img); if (img.colorCount() == 0) continue; for (int k = 0; k < 2; ++k) { QPainter p(&img); p.fillRect(0, 0, 2, 2, colorPairs[j][k]); p.end(); QImage argb32p(2, 2, QImage::Format_ARGB32_Premultiplied); p.begin(&argb32p); p.fillRect(0, 0, 2, 2, colorPairs[j][k]); p.end(); QCOMPARE(argb32p, img.convertToFormat(argb32p.format())); // drawing argb32p image on mono image p.begin(&img); p.drawImage(0, 0, argb32p); p.end(); QCOMPARE(argb32p, img.convertToFormat(argb32p.format())); // drawing mono image on argb32p image p.begin(&argb32p); p.drawImage(0, 0, img); p.end(); QCOMPARE(argb32p, img.convertToFormat(argb32p.format())); } } } } #if !defined(Q_OS_AIX) && !defined(Q_CC_MSVC) && !defined(Q_OS_SOLARIS) && !defined(__UCLIBC__) #include static const QString fpeExceptionString(int exception) { #ifdef FE_INEXACT if (exception & FE_INEXACT) return QLatin1String("Inexact result"); #endif if (exception & FE_UNDERFLOW) return QLatin1String("Underflow"); if (exception & FE_OVERFLOW) return QLatin1String("Overflow"); if (exception & FE_DIVBYZERO) return QLatin1String("Divide by zero"); if (exception & FE_INVALID) return QLatin1String("Invalid operation"); return QLatin1String("No exception"); } class FpExceptionChecker { public: FpExceptionChecker(int exceptionMask) : m_exceptionMask(exceptionMask) { feclearexcept(m_exceptionMask); } ~FpExceptionChecker() { const int exceptions = fetestexcept(m_exceptionMask); QVERIFY2(!exceptions, qPrintable(QLatin1String("Floating point exception: ") + fpeExceptionString(exceptions))); } private: int m_exceptionMask; }; void fpe_rasterizeLine_task232012() { FpExceptionChecker checker(FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID | FE_DIVBYZERO); QImage img(128, 128, QImage::Format_ARGB32_Premultiplied); img.fill(0x0); QPainter p(&img); p.setBrush(Qt::black); p.drawRect(QRectF(0, 0, 5, 0)); p.drawRect(QRectF(0, 0, 0, 5)); } void fpe_pixmapTransform() { FpExceptionChecker checker(FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID | FE_DIVBYZERO); QImage img(128, 128, QImage::Format_ARGB32_Premultiplied); QPainter p(&img); const qreal scaleFactor = 0.001; const int translateDistance = 1000000; p.setPen(Qt::red); p.setBrush(QBrush(Qt::red,Qt::Dense6Pattern)); for (int i = 0; i < 2; ++i) { p.setRenderHint(QPainter::SmoothPixmapTransform, i); p.resetTransform(); p.scale(1.1, 1.1); p.translate(translateDistance, 0); p.drawRect(-translateDistance, 0, 100, 100); p.resetTransform(); p.scale(scaleFactor, scaleFactor); p.drawRect(QRectF(0, 0, 1 / scaleFactor, 1 / scaleFactor)); } } void fpe_zeroLengthLines() { FpExceptionChecker checker(FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID | FE_DIVBYZERO); QImage img(128, 128, QImage::Format_ARGB32_Premultiplied); QPainter p(&img); p.setPen(QPen(Qt::black, 3)); p.drawLine(64, 64, 64, 64); } void fpe_divByZero() { FpExceptionChecker checker(FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID | FE_DIVBYZERO); QImage img(128, 128, QImage::Format_ARGB32_Premultiplied); QPainter p(&img); p.setRenderHint(QPainter::Antialiasing); p.drawRect(QRectF(10, 10, 100, 0)); p.drawRect(QRectF(10, 10, 0, 100)); p.drawRect(QRect(10, 10, 100, 0)); p.drawRect(QRect(10, 10, 0, 100)); p.fillRect(QRectF(10, 10, 100, 0), Qt::black); p.fillRect(QRectF(10, 10, 0, 100), Qt::black); p.fillRect(QRect(10, 10, 100, 0), Qt::black); p.fillRect(QRect(10, 10, 0, 100), Qt::black); } void fpe_steepSlopes() { FpExceptionChecker checker(FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID | FE_DIVBYZERO); QImage img(1024, 1024, QImage::Format_ARGB32_Premultiplied); QFETCH(QTransform, transform); QFETCH(QLineF, line); QFETCH(bool, antialiased); QPainter p(&img); p.setPen(QPen(Qt::black, 1)); p.setRenderHint(QPainter::Antialiasing, antialiased); p.setTransform(transform); p.drawLine(line); } void fpe_radialGradients() { FpExceptionChecker checker(FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID | FE_DIVBYZERO); QImage img(21, 21, QImage::Format_ARGB32_Premultiplied); img.fill(0); double m = img.width() * 0.5; QPainter p(&img); p.setRenderHints(QPainter::Antialiasing); p.setPen(Qt::NoPen); p.setBrush(QRadialGradient(m, m, m)); p.drawEllipse(img.rect()); } #define FPE_TEST(x) \ void tst_QPainter::x() \ { \ ::x(); \ } #else #define FPE_TEST(x) \ void tst_QPainter::x() \ { \ QSKIP("Floating point exception checking (fenv.h) not available"); \ } #endif FPE_TEST(fpe_rasterizeLine_task232012) FPE_TEST(fpe_pixmapTransform) FPE_TEST(fpe_zeroLengthLines) FPE_TEST(fpe_divByZero) FPE_TEST(fpe_steepSlopes) FPE_TEST(fpe_radialGradients) void tst_QPainter::fpe_steepSlopes_data() { QTest::addColumn("transform"); QTest::addColumn("line"); QTest::addColumn("antialiased"); { const qreal dsin = 0.000014946676875461832484392500630665523431162000633776187896728515625; const qreal dcos = 0.9999999998882984630910186751862056553363800048828125; const QTransform transform = QTransform(QMatrix(dcos, dsin, -dsin, dcos, 64, 64)); const QLineF line(2, 2, 2, 6); QTest::newRow("task 207147 aa") << transform << line << true; QTest::newRow("task 207147 no aa") << transform << line << false; } { QTransform transform; transform.rotate(0.0000001); const QLineF line(5, 5, 10, 5); QTest::newRow("task 166702 aa") << transform << line << true; QTest::newRow("task 166702 no aa") << transform << line << false; } { const QTransform transform; const QLineF line(2.5, 2.5, 2.5 + 1/256., 60000.5); QTest::newRow("steep line aa") << transform << line << true; QTest::newRow("steep line no aa") << transform << line << false; } { const QTransform transform; const QLineF line(2.5, 2.5, 2.5 + 1/256., 1024); QTest::newRow("steep line 2 aa") << transform << line << true; QTest::newRow("steep line 2 no aa") << transform << line << false; } { const QTransform transform; const QLineF line(2.5, 2.5, 2.5 + 1/64., 1024); QTest::newRow("steep line 3 aa") << transform << line << true; QTest::newRow("steep line 3 no aa") << transform << line << false; } } qreal randf() { return QRandomGenerator::global()->bounded(1.0); } QPointF randInRect(const QRectF &rect) { const qreal x = rect.left() + rect.width() * randf(); const qreal y = rect.top() + rect.height() * randf(); return QPointF(x, y); } void tst_QPainter::rasterizer_asserts() { QImage img(64, 64, QImage::Format_ARGB32_Premultiplied); QRectF middle(QPointF(0, 0), img.size()); QRectF left = middle.translated(-middle.width(), 0); QRectF right = middle.translated(middle.width(), 0); QPainter p(&img); img.fill(Qt::white); p.setCompositionMode(QPainter::CompositionMode_Destination); for (int i = 0; i < 100000; ++i) { QPainterPath path; path.moveTo(randInRect(middle)); path.lineTo(randInRect(left)); path.lineTo(randInRect(right)); p.fillPath(path, Qt::black); } } void tst_QPainter::rasterizer_negativeCoords() { QImage img(64, 64, QImage::Format_ARGB32_Premultiplied); img.fill(0x0); QImage original = img; QPainter p(&img); p.rotate(90); p.fillRect(0, 0, 70, 50, Qt::black); // image should not have changed QCOMPARE(img.pixel(0, 0), 0x0U); QCOMPARE(img, original); } void tst_QPainter::blendOverFlow_data() { QTest::addColumn("format"); QTest::addColumn("width"); QTest::addColumn("height"); QImage::Format format = QImage::Format_ARGB8555_Premultiplied; QTest::newRow("555,1,1") << format << 1 << 1; QTest::newRow("555,2,2") << format << 2 << 2; QTest::newRow("555,10,10") << format << 10 << 10; format = QImage::Format_ARGB8565_Premultiplied; QTest::newRow("565,1,1") << format << 1 << 1; QTest::newRow("565,2,2") << format << 2 << 2; QTest::newRow("565,10,10") << format << 10 << 10; } void tst_QPainter::blendOverFlow() { QFETCH(QImage::Format, format); QFETCH(int, width); QFETCH(int, height); QImage dest(width, height, format); QImage src(width, height, format); { QPainter p(&dest); p.fillRect(0, 0, width, height, Qt::green); } QImage expected = dest; { QPainter p(&src); p.setCompositionMode(QPainter::CompositionMode_Source); p.fillRect(0, 0, width, height, QColor(0, 255, 0, 6)); } { QPainter p(&dest); p.drawImage(0, 0, src); } QCOMPARE(dest.pixel(0, 0), expected.pixel(0, 0)); QCOMPARE(dest, expected); } void tst_QPainter::largeImagePainting_data() { QTest::addColumn("width"); QTest::addColumn("height"); QTest::addColumn("antialiased"); QTest::newRow("tall") << 1 << 32767 << false; QTest::newRow("tall aa") << 1 << 32767 << true; QTest::newRow("wide") << 32767 << 1 << false; QTest::newRow("wide aa") << 32767 << 1 << true; } void tst_QPainter::largeImagePainting() { QPainterPath path; path.addRect(0, 0, 1, 1); path.addRect(2, 0, 1, 1); path.addRect(0, 2, 1, 1); QFETCH(int, width); QFETCH(int, height); QFETCH(bool, antialiased); QImage img(width, height, QImage::Format_ARGB32_Premultiplied); img.fill(0x0); QPainter p(&img); p.setPen(Qt::NoPen); p.setBrush(Qt::white); p.setRenderHint(QPainter::Antialiasing, antialiased); for (int i = 0; i < img.width(); i += 4) { p.drawPath(path); p.translate(4, 0); } p.resetMatrix(); for (int i = 4; i < img.height(); i += 4) { p.translate(0, 4); p.drawPath(path); } for (int i = 0; i < img.width(); ++i) { if (i % 2) QCOMPARE(img.pixel(i, 0), 0x0U); else QCOMPARE(img.pixel(i, 0), 0xffffffffU); } for (int i = 1; i < img.height(); ++i) { if (i % 2) QCOMPARE(img.pixel(0, i), 0x0U); else QCOMPARE(img.pixel(0, i), 0xffffffffU); } } void tst_QPainter::imageScaling_task206785() { QImage src(32, 2, QImage::Format_ARGB32_Premultiplied); src.fill(0xffffffff); QImage dst(128, 128, QImage::Format_ARGB32_Premultiplied); QImage expected(128, 128, QImage::Format_ARGB32_Premultiplied); expected.fill(0xffffffff); for (int i = 1; i < 5; ++i) { qreal scale = i / qreal(5); dst.fill(0xff000000); QPainter p(&dst); p.scale(dst.width() / qreal(src.width()), scale); for (int y = 0; y * scale < dst.height(); ++y) p.drawImage(0, y, src); p.end(); QCOMPARE(dst, expected); } } #define FOR_EACH_NEIGHBOR_8 for (int dx = -1; dx <= 1; ++dx) for (int dy = -1; dy <= 1; ++dy) if (dx != 0 || dy != 0) #define FOR_EACH_NEIGHBOR_4 for (int dx = -1; dx <= 1; ++dx) for (int dy = -1; dy <= 1; ++dy) if ((dx == 0) != (dy == 0)) uint qHash(const QPoint &point) { return qHash(qMakePair(point.x(), point.y())); } bool verifyOutlineFillConsistency(const QImage &img, QRgb outside, QRgb inside, QRgb outline) { if (img.pixel(img.width() / 2, img.height() / 2) != inside) return false; int x = img.width() / 2; int y = img.height() / 2; while (img.pixel(++x, y) == inside) ; if (img.pixel(x, y) != outline) return false; QQueue discovered; discovered.enqueue(QPoint(x, y)); QVector visited(img.width() * img.height()); visited.fill(false); while (!discovered.isEmpty()) { QPoint p = discovered.dequeue(); QRgb pixel = img.pixel(p.x(), p.y()); bool &v = visited[p.y() * img.width() + p.x()]; if (v) continue; v = true; if (pixel == outline) { FOR_EACH_NEIGHBOR_8 { QPoint x(p.x() + dx, p.y() + dy); discovered.enqueue(x); } } else { FOR_EACH_NEIGHBOR_4 { if ((dx == 0) == (dy == 0)) continue; QRgb neighbor = img.pixel(p.x() + dx, p.y() + dy); if ((pixel == inside && neighbor == outside) || (pixel == outside && neighbor == inside)) return false; } } } return true; } #undef FOR_EACH_NEIGHBOR_8 #undef FOR_EACH_NEIGHBOR_4 void tst_QPainter::outlineFillConsistency() { QImage dst(256, 256, QImage::Format_ARGB32_Premultiplied); QPolygonF poly; poly << QPointF(5, -100) << QPointF(-70, 20) << QPointF(95, 25); QPen pen(Qt::red); QBrush brush(Qt::black); QRgb background = 0xffffffff; for (int i = 0; i < 360; ++i) { dst.fill(background); QPainter p(&dst); p.translate(dst.width() / 2, dst.height() / 2); QPolygonF copy = poly; for (int j = 0; j < copy.size(); ++j) copy[j] = QTransform().rotate(i).map(copy[j]); p.setPen(pen); p.setBrush(brush); p.drawPolygon(copy); p.end(); QVERIFY(verifyOutlineFillConsistency(dst, background, brush.color().rgba(), pen.color().rgba())); } } void tst_QPainter::drawImage_task217400_data() { QTest::addColumn("format"); QTest::newRow("444") << QImage::Format_ARGB4444_Premultiplied; QTest::newRow("555") << QImage::Format_ARGB8555_Premultiplied; QTest::newRow("565") << QImage::Format_ARGB8565_Premultiplied; // QTest::newRow("666") << QImage::Format_ARGB6666_Premultiplied; QTest::newRow("888p") << QImage::Format_ARGB32_Premultiplied; QTest::newRow("888") << QImage::Format_ARGB32; } void tst_QPainter::drawImage_task217400() { QFETCH(QImage::Format, format); const QImage src = QImage(QFINDTESTDATA("task217400.png")) .convertToFormat(format); QVERIFY(!src.isNull()); QImage expected(src.size(), format); { QPainter p(&expected); p.fillRect(0, 0, expected.width(), expected.height(), Qt::white); p.drawImage(0, 0, src); } for (int i = 1; i <= 4; ++i) { QImage dest(src.width() + i, src.height(), format); { QPainter p(&dest); p.fillRect(0, 0, dest.width(), dest.height(), Qt::white); p.drawImage(i, 0, src); } const QImage result = dest.copy(i, 0, src.width(), src.height()); QCOMPARE(result, expected); } } void tst_QPainter::drawImage_task258776() { QImage src(16, 16, QImage::Format_RGB888); QImage dest(33, 33, QImage::Format_RGB888); src.fill(0x00ff00); dest.fill(0xff0000); QPainter painter(&dest); painter.drawImage(QRectF(0.499, 0.499, 32, 32), src, QRectF(0, 0, 16, 16)); painter.end(); QImage expected(33, 33, QImage::Format_RGB32); expected.fill(0xff0000); painter.begin(&expected); painter.drawImage(QRectF(0, 0, 32, 32), src); painter.end(); dest = dest.convertToFormat(QImage::Format_RGB32); dest.save("dest.png"); expected.save("expected.png"); QCOMPARE(dest, expected); } void tst_QPainter::drawImage_QTBUG28324() { QImage dest(512, 512, QImage::Format_ARGB32_Premultiplied); dest.fill(0x0); int x = 263; int y = 89; int w = 61; int h = 39; QImage source(w, h, QImage::Format_ARGB32_Premultiplied); quint32 *b = (quint32 *)source.bits(); for (int j = 0; j < w * h; ++j) b[j] = 0x7f7f7f7f; // nothing to test here since the bug is about // an invalid memory read, which valgrind // would complain about QPainter p(&dest); p.drawImage(x, y, source); } void tst_QPainter::clipRectSaveRestore() { QImage img(64, 64, QImage::Format_ARGB32_Premultiplied); img.fill(0x0); QPainter p(&img); p.setClipRect(QRect(0, 0, 10, 10)); p.save(); p.setClipRect(QRect(5, 5, 5, 5), Qt::IntersectClip); p.restore(); p.fillRect(0, 0, 64, 64, Qt::black); p.end(); QCOMPARE(img.pixel(0, 0), QColor(Qt::black).rgba()); } void tst_QPainter::clipStateSaveRestore() { QImage img(16, 16, QImage::Format_RGB32); img.fill(Qt::blue); { QPainter p(&img); p.setClipRect(QRect(5, 5, 10, 10)); p.save(); p.setClipping(false); p.restore(); p.fillRect(0, 0, 16, 16, Qt::red); p.end(); QCOMPARE(img.pixel(0, 0), QColor(Qt::blue).rgb()); } img.fill(Qt::blue); { QPainter p(&img); p.setClipRect(QRect(5, 5, 10, 10)); p.setClipping(false); p.save(); p.setClipping(true); p.restore(); p.fillRect(0, 0, 16, 16, Qt::red); p.end(); QCOMPARE(img.pixel(0, 0), QColor(Qt::red).rgb()); } } void tst_QPainter::clippedImage() { QImage img(16, 16, QImage::Format_ARGB32_Premultiplied); img.fill(0x0); QImage src(16, 16, QImage::Format_RGB32); src.fill(QColor(Qt::red).rgba()); QPainter p(&img); p.setClipRect(QRect(1, 1, 14, 14)); p.drawImage(0, 0, src); p.end(); QCOMPARE(img.pixel(0, 0), 0x0U); QCOMPARE(img.pixel(1, 1), src.pixel(1, 1)); } void tst_QPainter::stateResetBetweenQPainters() { QImage img(16, 16, QImage::Format_ARGB32); { QPainter p(&img); p.setCompositionMode(QPainter::CompositionMode_Source); p.fillRect(0, 0, 16, 16, Qt::red); } { QPainter p2(&img); p2.fillRect(0, 0, 16, 16, QColor(0, 0, 255, 63)); } img.save("foo.png"); QVERIFY(img.pixel(0, 0) != qRgba(0, 0, 255, 63)); QVERIFY(qRed(img.pixel(0, 0)) > 0); // We didn't erase the red channel... QVERIFY(qBlue(img.pixel(0, 0)) < 255); // We blended the blue channel } void tst_QPainter::drawRect_task215378() { QImage img(11, 11, QImage::Format_ARGB32_Premultiplied); img.fill(QColor(Qt::white).rgba()); QPainter p(&img); p.setPen(QColor(127, 127, 127, 127)); p.drawRect(0, 0, 10, 10); p.end(); QCOMPARE(img.pixel(0, 0), img.pixel(1, 0)); QCOMPARE(img.pixel(0, 0), img.pixel(0, 1)); QVERIFY(img.pixel(0, 0) != img.pixel(1, 1)); } void tst_QPainter::drawRect_task247505() { QImage a(10, 10, QImage::Format_ARGB32_Premultiplied); a.fill(0); QImage b = a; QPainter p(&a); p.setPen(Qt::NoPen); p.setBrush(Qt::black); p.drawRect(QRectF(10, 0, -10, 10)); p.end(); p.begin(&b); p.setPen(Qt::NoPen); p.setBrush(Qt::black); p.drawRect(QRectF(0, 0, 10, 10)); p.end(); QCOMPARE(a, b); } void tst_QPainter::drawImage_data() { QTest::addColumn("x"); QTest::addColumn("y"); QTest::addColumn("w"); QTest::addColumn("h"); QTest::addColumn("srcFormat"); QTest::addColumn("dstFormat"); for (int srcFormat = QImage::Format_Mono; srcFormat < QImage::NImageFormats; ++srcFormat) { for (int dstFormat = QImage::Format_Mono; dstFormat < QImage::NImageFormats; ++dstFormat) { // Indexed8 can't be painted to, and Alpha8 can't hold a color. if (dstFormat == QImage::Format_Indexed8 || dstFormat == QImage::Format_Alpha8) continue; for (int odd_x = 0; odd_x <= 1; ++odd_x) { for (int odd_width = 0; odd_width <= 1; ++odd_width) { QTest::addRow("srcFormat %d, dstFormat %d, odd x: %d, odd width: %d", srcFormat, dstFormat, odd_x, odd_width) << (10 + odd_x) << 10 << (20 + odd_width) << 20 << QImage::Format(srcFormat) << QImage::Format(dstFormat); } } } } } bool verifyImage(const QImage &img, int x, int y, int w, int h, uint background) { int imgWidth = img.width(); int imgHeight = img.height(); for (int i = 0; i < imgHeight; ++i) { for (int j = 0; j < imgWidth; ++j) { uint pixel = img.pixel(j, i); bool outside = j < x || j >= (x + w) || i < y || i >= (y + h); if (outside != (pixel == background)) { //printf("%d %d, expected %x, got %x, outside: %d\n", x, y, background, pixel, outside); return false; } } } return true; } void tst_QPainter::drawImage() { QFETCH(int, x); QFETCH(int, y); QFETCH(int, w); QFETCH(int, h); QFETCH(QImage::Format, srcFormat); QFETCH(QImage::Format, dstFormat); QImage dst(40, 40, QImage::Format_RGB32); dst.fill(0xffffffff); dst = dst.convertToFormat(dstFormat); uint background = dst.pixel(0, 0); QImage src(w, h, QImage::Format_RGB32); src.fill(0xff000000); src = src.convertToFormat(srcFormat); QPainter p(&dst); p.drawImage(x, y, src); p.end(); QVERIFY(verifyImage(dst, x, y, w, h, background)); } void tst_QPainter::imageCoordinateLimit() { QImage img(64, 40000, QImage::Format_MonoLSB); QPainter p(&img); p.drawText(10, 36000, QLatin1String("foo")); p.setPen(QPen(Qt::black, 2)); p.drawLine(10, 0, 60, 40000); p.setRenderHint(QPainter::Antialiasing); p.drawLine(10, 0, 60, 40000); } void tst_QPainter::imageBlending_data() { QTest::addColumn("sourceFormat"); QTest::addColumn("destFormat"); QTest::addColumn("error"); int error_rgb565 = ((1<<3) + (1<<2) + (1<<3)); QTest::newRow("rgb565_on_rgb565") << QImage::Format_RGB16 << QImage::Format_RGB16 << 0; QTest::newRow("argb8565_on_rgb565") << QImage::Format_ARGB8565_Premultiplied << QImage::Format_RGB16 << error_rgb565; QTest::newRow("rgb32_on_rgb565") << QImage::Format_RGB32 << QImage::Format_RGB16 << error_rgb565; QTest::newRow("argb32pm_on_rgb565") << QImage::Format_ARGB32_Premultiplied << QImage::Format_RGB16 << error_rgb565; } int diffColor(quint32 ap, quint32 bp) { int a = qAlpha(ap) - qAlpha(bp); int r = qRed(ap) - qRed(bp); int b = qBlue(ap) - qBlue(bp); int g = qBlue(ap) - qBlue(bp); return qAbs(a) + qAbs(r) + qAbs(g) + qAbs(b); } // this test assumes premultiplied pixels... void tst_QPainter::imageBlending() { QFETCH(QImage::Format, sourceFormat); QFETCH(QImage::Format, destFormat); QFETCH(int, error); QImage dest; { QImage orig_dest(6, 6, QImage::Format_ARGB32_Premultiplied); orig_dest.fill(0); QPainter p(&orig_dest); p.fillRect(0, 0, 6, 3, QColor::fromRgbF(1, 0, 0)); p.fillRect(3, 0, 3, 6, QColor::fromRgbF(0, 0, 1, 0.5)); p.end(); dest = orig_dest.convertToFormat(destFormat); // An image like this: (r = red, m = magenta, b = light alpha blue, 0 = transparent) // r r r m m m // r r r m m m // r r r m m m // 0 0 0 b b b // 0 0 0 b b b // 0 0 0 b b b } QImage source; { QImage orig_source(6, 6, QImage::Format_ARGB32_Premultiplied); orig_source.fill(0); QPainter p(&orig_source); p.fillRect(1, 1, 4, 4, QColor::fromRgbF(0, 1, 0, 0.5)); p.fillRect(2, 2, 2, 2, QColor::fromRgbF(0, 1, 0)); p.end(); source = orig_source.convertToFormat(sourceFormat); // An image like this: (0 = transparent, . = green at 0.5 alpha, g = opaque green. // 0 0 0 0 0 0 // 0 . . . . 0 // 0 . g g . 0 // 0 . g g . 0 // 0 . . . . 0 // 0 0 0 0 0 0 } QPainter p(&dest); p.drawImage(0, 0, source); p.end(); // resulting image: // r r r m m m // r r. r. m. m. m // r r. g g m. m // 0 . g g b. b // 0 . . b. b. b // 0 0 0 b b b // the g pixels, always green.. QVERIFY(diffColor(dest.pixel(2, 2), 0xff00ff00) <= error); // g if (source.hasAlphaChannel()) { QVERIFY(diffColor(dest.pixel(0, 0), 0xffff0000) <= error); // r QVERIFY(diffColor(dest.pixel(5, 0), 0xff7f007f) <= error); // m QVERIFY(diffColor(dest.pixel(1, 1), 0xff7f7f00) <= error); // r. QVERIFY(diffColor(dest.pixel(4, 1), 0xff3f7f3f) <= error); // m. if (dest.hasAlphaChannel()) { QVERIFY(diffColor(dest.pixel(1, 3), 0x7f007f00) <= error); // . QVERIFY(diffColor(dest.pixel(4, 3), 0x7f007f3f) <= error); // b. QVERIFY(diffColor(dest.pixel(4, 3), 0x7f007f3f) <= error); // b. QVERIFY(diffColor(dest.pixel(4, 4), 0x7f00007f) <= error); // b QVERIFY(diffColor(dest.pixel(4, 0), 0) <= 0); // 0 } } else { QVERIFY(diffColor(dest.pixel(0, 0), 0xff000000) <= 0); QVERIFY(diffColor(dest.pixel(1, 1), 0xff007f00) <= error); } } void tst_QPainter::imageBlending_clipped() { QImage src(20, 20, QImage::Format_RGB16); QPainter p(&src); p.fillRect(src.rect(), Qt::red); p.end(); QImage dst(40, 20, QImage::Format_RGB16); p.begin(&dst); p.fillRect(dst.rect(), Qt::white); p.end(); QImage expected = dst; p.begin(&dst); p.setClipRect(QRect(23, 0, 20, 20)); // should be completely clipped p.drawImage(QRectF(3, 0, 20, 20), src); p.end(); // dst should be left unchanged QCOMPARE(dst, expected); } void tst_QPainter::paintOnNullPixmap() { QPixmap pix(16, 16); QPixmap textPixmap; QPainter p(&textPixmap); p.drawPixmap(10, 10, pix); p.end(); QPixmap textPixmap2(16,16); p.begin(&textPixmap2); p.end(); } void tst_QPainter::checkCompositionMode() { QImage refImage(50,50,QImage::Format_ARGB32); QPainter painter(&refImage); painter.fillRect(QRect(0,0,50,50),Qt::blue); QImage testImage(50,50,QImage::Format_ARGB32); QPainter p(&testImage); p.fillRect(QRect(0,0,50,50),Qt::red); p.save(); p.setCompositionMode(QPainter::CompositionMode_SourceOut); p.restore(); p.fillRect(QRect(0,0,50,50),Qt::blue); QCOMPARE(refImage.pixel(20,20),testImage.pixel(20,20)); } static QLinearGradient inverseGradient(QLinearGradient g) { QLinearGradient g2 = g; QGradientStops stops = g.stops(); QGradientStops inverse; foreach (QGradientStop stop, stops) inverse << QGradientStop(1 - stop.first, stop.second); g2.setStops(inverse); return g2; } void tst_QPainter::linearGradientSymmetry_data() { QTest::addColumn("stops"); if (sizeof(qreal) != sizeof(float)) { QGradientStops stops; stops << qMakePair(qreal(0.0), QColor(Qt::blue)); stops << qMakePair(qreal(0.2), QColor(220, 220, 220, 0)); stops << qMakePair(qreal(0.6), QColor(Qt::red)); stops << qMakePair(qreal(0.9), QColor(220, 220, 220, 255)); stops << qMakePair(qreal(1.0), QColor(Qt::black)); QTest::newRow("multiple stops") << stops; } { QGradientStops stops; stops << qMakePair(qreal(0.0), QColor(Qt::blue)); stops << qMakePair(qreal(1.0), QColor(Qt::black)); QTest::newRow("two stops") << stops; } if (sizeof(qreal) != sizeof(float)) { QGradientStops stops; stops << qMakePair(qreal(0.3), QColor(Qt::blue)); stops << qMakePair(qreal(0.6), QColor(Qt::black)); QTest::newRow("two stops 2") << stops; } } void tst_QPainter::linearGradientSymmetry() { QFETCH(QGradientStops, stops); QImage a(64, 8, QImage::Format_ARGB32_Premultiplied); QImage b(64, 8, QImage::Format_ARGB32_Premultiplied); a.fill(0); b.fill(0); QLinearGradient gradient(QRectF(b.rect()).topLeft(), QRectF(b.rect()).topRight()); gradient.setStops(stops); QPainter pa(&a); pa.fillRect(a.rect(), gradient); pa.end(); QPainter pb(&b); pb.fillRect(b.rect(), inverseGradient(gradient)); pb.end(); b = b.mirrored(true); QCOMPARE(a, b); } void tst_QPainter::gradientPixelFormat_data() { QTest::addColumn("format"); QTest::newRow("argb32") << QImage::Format_ARGB32; QTest::newRow("rgb32") << QImage::Format_RGB32; QTest::newRow("rgb888") << QImage::Format_RGB888; QTest::newRow("rgbx8888") << QImage::Format_RGBX8888; QTest::newRow("rgba8888") << QImage::Format_RGBA8888; QTest::newRow("rgba8888_pm") << QImage::Format_RGBA8888_Premultiplied; QTest::newRow("rgbx64") << QImage::Format_RGBX64; QTest::newRow("rgba64_pm") << QImage::Format_RGBA64_Premultiplied; } void tst_QPainter::gradientPixelFormat() { QFETCH(QImage::Format, format); QImage a(8, 64, QImage::Format_ARGB32_Premultiplied); QImage b(8, 64, format); QGradientStops stops; stops << qMakePair(qreal(0.0), QColor(Qt::blue)); stops << qMakePair(qreal(0.3), QColor(Qt::red)); stops << qMakePair(qreal(0.6), QColor(Qt::green)); stops << qMakePair(qreal(1.0), QColor(Qt::black)); a.fill(0); b.fill(0); QLinearGradient gradient(QRectF(b.rect()).topLeft(), QRectF(b.rect()).bottomLeft()); gradient.setStops(stops); QPainter pa(&a); pa.fillRect(a.rect(), gradient); pa.end(); QPainter pb(&b); pb.fillRect(b.rect(), gradient); pb.end(); QCOMPARE(a, b.convertToFormat(QImage::Format_ARGB32_Premultiplied)); } void tst_QPainter::gradientInterpolation() { QImage image(256, 8, QImage::Format_ARGB32_Premultiplied); QPainter painter; QLinearGradient gradient(QRectF(image.rect()).topLeft(), QRectF(image.rect()).topRight()); gradient.setColorAt(0.0, QColor(255, 0, 0, 0)); gradient.setColorAt(1.0, Qt::blue); image.fill(0); painter.begin(&image); painter.fillRect(image.rect(), gradient); painter.end(); const QRgb *line = reinterpret_cast(image.scanLine(3)); for (int i = 0; i < 256; ++i) { QCOMPARE(qAlpha(line[i]), qBlue(line[i])); // bright blue QVERIFY(qAbs(qAlpha(line[i]) - i) < 3); // linear alpha QCOMPARE(qRed(line[i]), 0); // no red component QCOMPARE(qGreen(line[i]), 0); // no green component } gradient.setInterpolationMode(QGradient::ComponentInterpolation); image.fill(0); painter.begin(&image); painter.fillRect(image.rect(), gradient); painter.end(); for (int i = 1; i < 256; ++i) { if (i < 128) { QVERIFY(qRed(line[i]) >= qBlue(line[i])); // red is dominant } else { QVERIFY(qRed(line[i]) <= qBlue(line[i])); // blue is dominant } QVERIFY((qRed(line[i]) - 0.5) * (qAlpha(line[i - 1]) - 0.5) <= (qRed(line[i - 1]) + 0.5) * (qAlpha(line[i]) + 0.5)); // decreasing red QVERIFY((qBlue(line[i]) + 0.5) * (qAlpha(line[i - 1]) + 0.5) >= (qBlue(line[i - 1]) - 0.5) * (qAlpha(line[i]) - 0.5)); // increasing blue QVERIFY(qAbs(qAlpha(line[i]) - i) < 3); // linear alpha QCOMPARE(qGreen(line[i]), 0); // no green component } } void tst_QPainter::linearGradientRgb30_data() { QTest::addColumn("stop0"); QTest::addColumn("stop1"); QTest::newRow("white->black") << QColor(Qt::white) << QColor(Qt::black); QTest::newRow("blue->black") << QColor(Qt::blue) << QColor(Qt::black); QTest::newRow("white->red") << QColor(Qt::white) << QColor(Qt::red); } void tst_QPainter::linearGradientRgb30() { QFETCH(QColor, stop0); QFETCH(QColor, stop1); QLinearGradient gradient(0, 0, 1000, 1); gradient.setColorAt(0.0, stop0); gradient.setColorAt(1.0, stop1); QImage image(1000, 1, QImage::Format_RGB30); QPainter painter(&image); painter.fillRect(image.rect(), gradient); painter.end(); for (int i = 1; i < 1000; ++i) { QColor p1 = image.pixelColor(i - 1, 0); QColor p2 = image.pixelColor(i, 0); QVERIFY(p1 != p2); QVERIFY(qGray(p1.rgb()) >= qGray(p2.rgb())); } } void tst_QPainter::radialGradientRgb30_data() { linearGradientRgb30_data(); } void tst_QPainter::radialGradientRgb30() { QFETCH(QColor, stop0); QFETCH(QColor, stop1); QRadialGradient gradient(0, 0, 1000); gradient.setColorAt(0.0, stop0); gradient.setColorAt(1.0, stop1); QImage image(1000, 1, QImage::Format_A2BGR30_Premultiplied); QPainter painter(&image); painter.fillRect(image.rect(), gradient); painter.end(); for (int i = 1; i < 1000; ++i) { QColor p1 = image.pixelColor(i - 1, 0); QColor p2 = image.pixelColor(i, 0); QVERIFY(p1 != p2); QVERIFY(qGray(p1.rgb()) >= qGray(p2.rgb())); } } void tst_QPainter::drawPolygon() { QImage img(128, 128, QImage::Format_ARGB32_Premultiplied); QPainterPathStroker stroker; stroker.setWidth(1.5); QPainterPath path; path.moveTo(2, 34); path.lineTo(34, 2); QPolygonF poly = stroker.createStroke(path).toFillPolygon(); img.fill(0xffffffff); QPainter p(&img); p.setRenderHint(QPainter::Antialiasing); p.setBrush(Qt::red); p.setPen(Qt::NoPen); p.drawPolygon(poly); p.translate(64, 64); p.drawPolygon(poly); p.end(); QImage a = img.copy(); img.fill(0xffffffff); p.begin(&img); p.setRenderHint(QPainter::Antialiasing); p.setBrush(Qt::red); p.setPen(Qt::NoPen); p.translate(64, 64); p.drawPolygon(poly); p.resetTransform(); p.drawPolygon(poly); p.end(); QCOMPARE(a, img); } void tst_QPainter::inactivePainter() { // This test succeeds if it doesn't segfault. QPainter p; QPainterPath path; QRegion region(QRect(20, 20, 60, 40)); QPolygonF polygon(QVector() << QPointF(0, 0) << QPointF(12, 0) << QPointF(8, 6)); path.addPolygon(polygon); p.save(); p.restore(); p.background(); p.setBackground(QBrush(Qt::blue)); p.brush(); p.setBrush(Qt::red); p.setBrush(Qt::NoBrush); p.setBrush(QBrush(Qt::white, Qt::DiagCrossPattern)); p.backgroundMode(); p.setBackgroundMode(Qt::OpaqueMode); p.boundingRect(QRectF(0, 0, 100, 20), Qt::AlignCenter, QLatin1String("Hello, World!")); p.boundingRect(QRect(0, 0, 100, 20), Qt::AlignCenter, QLatin1String("Hello, World!")); p.brushOrigin(); p.setBrushOrigin(QPointF(12, 34)); p.setBrushOrigin(QPoint(12, 34)); p.clipPath(); p.clipRegion(); p.hasClipping(); p.setClipPath(path); p.setClipRect(QRectF(42, 42, 42, 42)); p.setClipRect(QRect(42, 42, 42, 42)); p.setClipRegion(region); p.setClipping(true); p.combinedMatrix(); p.combinedTransform(); p.compositionMode(); p.setCompositionMode(QPainter::CompositionMode_Plus); p.device(); p.deviceMatrix(); p.deviceTransform(); p.font(); p.setFont(QFont(QLatin1String("Times"), 24)); p.fontInfo(); p.fontMetrics(); p.layoutDirection(); p.setLayoutDirection(Qt::RightToLeft); p.opacity(); p.setOpacity(0.75); p.pen(); p.setPen(QPen(Qt::red)); p.setPen(Qt::green); p.setPen(Qt::NoPen); p.renderHints(); p.setRenderHint(QPainter::Antialiasing, true); p.setRenderHints(QPainter::Antialiasing | QPainter::SmoothPixmapTransform, false); p.resetMatrix(); p.resetTransform(); p.rotate(1); p.scale(2, 2); p.shear(-1, 1); p.translate(3, 14); p.viewTransformEnabled(); p.setViewTransformEnabled(true); p.viewport(); p.setViewport(QRect(10, 10, 620, 460)); p.window(); p.setWindow(QRect(10, 10, 620, 460)); p.worldMatrix(); p.setWorldMatrix(QMatrix().translate(43, 21), true); p.setWorldMatrixEnabled(true); p.transform(); p.setTransform(QTransform().translate(12, 34), true); p.worldTransform(); p.setWorldTransform(QTransform().scale(0.5, 0.5), true); } bool testCompositionMode(int src, int dst, int expected, QPainter::CompositionMode op, qreal opacity = 1.0) { // The test image needs to be large enough to test SIMD code const QSize imageSize(100, 100); QImage actual(imageSize, QImage::Format_ARGB32_Premultiplied); actual.fill(QColor(dst, dst, dst).rgb()); QPainter p(&actual); p.setCompositionMode(op); p.setOpacity(opacity); p.fillRect(QRect(QPoint(), imageSize), QColor(src, src, src)); p.end(); if (qRed(actual.pixel(0, 0)) != expected) { qDebug("Fail: mode %d, src[%d] dst [%d] actual [%d] expected [%d]", op, src, dst, qRed(actual.pixel(0, 0)), expected); return false; } else { QImage refImage(imageSize, QImage::Format_ARGB32_Premultiplied); refImage.fill(QColor(expected, expected, expected).rgb()); return actual == refImage; } } void tst_QPainter::extendedBlendModes() { QVERIFY(testCompositionMode(255, 255, 255, QPainter::CompositionMode_Plus)); QVERIFY(testCompositionMode( 0, 0, 0, QPainter::CompositionMode_Plus)); QVERIFY(testCompositionMode(127, 128, 255, QPainter::CompositionMode_Plus)); QVERIFY(testCompositionMode(127, 0, 127, QPainter::CompositionMode_Plus)); QVERIFY(testCompositionMode( 0, 127, 127, QPainter::CompositionMode_Plus)); QVERIFY(testCompositionMode(255, 0, 255, QPainter::CompositionMode_Plus)); QVERIFY(testCompositionMode( 0, 255, 255, QPainter::CompositionMode_Plus)); QVERIFY(testCompositionMode(128, 128, 255, QPainter::CompositionMode_Plus)); QVERIFY(testCompositionMode(255, 255, 255, QPainter::CompositionMode_Plus, 0.3)); QVERIFY(testCompositionMode( 0, 0, 0, QPainter::CompositionMode_Plus, 0.3)); QVERIFY(testCompositionMode(126, 128, 165, QPainter::CompositionMode_Plus, 0.3)); QVERIFY(testCompositionMode(127, 0, 38, QPainter::CompositionMode_Plus, 0.3)); QVERIFY(testCompositionMode( 0, 127, 127, QPainter::CompositionMode_Plus, 0.3)); QVERIFY(testCompositionMode(255, 0, 76, QPainter::CompositionMode_Plus, 0.3)); QVERIFY(testCompositionMode( 0, 255, 255, QPainter::CompositionMode_Plus, 0.3)); QVERIFY(testCompositionMode(128, 128, 166, QPainter::CompositionMode_Plus, 0.3)); QVERIFY(testCompositionMode(186, 200, 255, QPainter::CompositionMode_Plus, 0.3)); QVERIFY(testCompositionMode(255, 255, 255, QPainter::CompositionMode_Multiply)); QVERIFY(testCompositionMode( 0, 0, 0, QPainter::CompositionMode_Multiply)); QVERIFY(testCompositionMode(127, 255, 127, QPainter::CompositionMode_Multiply)); QVERIFY(testCompositionMode(255, 127, 127, QPainter::CompositionMode_Multiply)); QVERIFY(testCompositionMode( 63, 255, 63, QPainter::CompositionMode_Multiply)); QVERIFY(testCompositionMode(255, 63, 63, QPainter::CompositionMode_Multiply)); QVERIFY(testCompositionMode(127, 127, 63, QPainter::CompositionMode_Multiply)); QVERIFY(testCompositionMode(255, 255, 255, QPainter::CompositionMode_Screen)); QVERIFY(testCompositionMode( 0, 0, 0, QPainter::CompositionMode_Screen)); QVERIFY(testCompositionMode( 63, 255, 255, QPainter::CompositionMode_Screen)); QVERIFY(testCompositionMode(255, 63, 255, QPainter::CompositionMode_Screen)); QVERIFY(testCompositionMode( 63, 0, 63, QPainter::CompositionMode_Screen)); QVERIFY(testCompositionMode( 0, 63, 63, QPainter::CompositionMode_Screen)); QVERIFY(testCompositionMode(127, 127, 191, QPainter::CompositionMode_Screen)); QVERIFY(testCompositionMode(255, 255, 255, QPainter::CompositionMode_Overlay)); QVERIFY(testCompositionMode( 0, 0, 0, QPainter::CompositionMode_Overlay)); QVERIFY(testCompositionMode( 63, 63, 31, QPainter::CompositionMode_Overlay)); QVERIFY(testCompositionMode( 63, 255, 255, QPainter::CompositionMode_Overlay)); QVERIFY(testCompositionMode(255, 255, 255, QPainter::CompositionMode_Darken)); QVERIFY(testCompositionMode( 0, 0, 0, QPainter::CompositionMode_Darken)); QVERIFY(testCompositionMode( 63, 63, 63, QPainter::CompositionMode_Darken)); QVERIFY(testCompositionMode( 63, 255, 63, QPainter::CompositionMode_Darken)); QVERIFY(testCompositionMode(255, 63, 63, QPainter::CompositionMode_Darken)); QVERIFY(testCompositionMode( 63, 127, 63, QPainter::CompositionMode_Darken)); QVERIFY(testCompositionMode(127, 63, 63, QPainter::CompositionMode_Darken)); QVERIFY(testCompositionMode(255, 255, 255, QPainter::CompositionMode_Lighten)); QVERIFY(testCompositionMode( 0, 0, 0, QPainter::CompositionMode_Lighten)); QVERIFY(testCompositionMode( 63, 63, 63, QPainter::CompositionMode_Lighten)); QVERIFY(testCompositionMode( 63, 255, 255, QPainter::CompositionMode_Lighten)); QVERIFY(testCompositionMode(255, 63, 255, QPainter::CompositionMode_Lighten)); QVERIFY(testCompositionMode( 63, 127, 127, QPainter::CompositionMode_Lighten)); QVERIFY(testCompositionMode(127, 63, 127, QPainter::CompositionMode_Lighten)); QVERIFY(testCompositionMode(255, 255, 255, QPainter::CompositionMode_ColorDodge)); QVERIFY(testCompositionMode( 0, 0, 0, QPainter::CompositionMode_ColorDodge)); QVERIFY(testCompositionMode( 63, 127, 169, QPainter::CompositionMode_ColorDodge)); QVERIFY(testCompositionMode(191, 127, 255, QPainter::CompositionMode_ColorDodge)); QVERIFY(testCompositionMode(127, 191, 255, QPainter::CompositionMode_ColorDodge)); QVERIFY(testCompositionMode(255, 255, 255, QPainter::CompositionMode_ColorBurn)); QVERIFY(testCompositionMode( 0, 0, 0, QPainter::CompositionMode_ColorBurn)); QVERIFY(testCompositionMode(127, 127, 0, QPainter::CompositionMode_ColorBurn)); QVERIFY(testCompositionMode(128, 128, 2, QPainter::CompositionMode_ColorBurn)); QVERIFY(testCompositionMode(191, 127, 84, QPainter::CompositionMode_ColorBurn)); QVERIFY(testCompositionMode(255, 255, 255, QPainter::CompositionMode_HardLight)); QVERIFY(testCompositionMode( 0, 0, 0, QPainter::CompositionMode_HardLight)); QVERIFY(testCompositionMode(127, 127, 127, QPainter::CompositionMode_HardLight)); QVERIFY(testCompositionMode( 63, 63, 31, QPainter::CompositionMode_HardLight)); QVERIFY(testCompositionMode(127, 63, 63, QPainter::CompositionMode_HardLight)); QVERIFY(testCompositionMode(255, 255, 255, QPainter::CompositionMode_SoftLight)); QVERIFY(testCompositionMode( 0, 0, 0, QPainter::CompositionMode_SoftLight)); QVERIFY(testCompositionMode(127, 127, 126, QPainter::CompositionMode_SoftLight)); QVERIFY(testCompositionMode( 63, 63, 39, QPainter::CompositionMode_SoftLight)); QVERIFY(testCompositionMode(127, 63, 62, QPainter::CompositionMode_SoftLight)); QVERIFY(testCompositionMode(255, 255, 0, QPainter::CompositionMode_Difference)); QVERIFY(testCompositionMode( 0, 0, 0, QPainter::CompositionMode_Difference)); QVERIFY(testCompositionMode(255, 0, 255, QPainter::CompositionMode_Difference)); QVERIFY(testCompositionMode(127, 127, 0, QPainter::CompositionMode_Difference)); QVERIFY(testCompositionMode(127, 128, 1, QPainter::CompositionMode_Difference)); QVERIFY(testCompositionMode(127, 63, 64, QPainter::CompositionMode_Difference)); QVERIFY(testCompositionMode( 0, 127, 127, QPainter::CompositionMode_Difference)); QVERIFY(testCompositionMode(255, 255, 0, QPainter::CompositionMode_Exclusion)); QVERIFY(testCompositionMode( 0, 0, 0, QPainter::CompositionMode_Exclusion)); QVERIFY(testCompositionMode(255, 0, 255, QPainter::CompositionMode_Exclusion)); QVERIFY(testCompositionMode(127, 127, 127, QPainter::CompositionMode_Exclusion)); QVERIFY(testCompositionMode( 63, 127, 127, QPainter::CompositionMode_Exclusion)); QVERIFY(testCompositionMode( 63, 63, 95, QPainter::CompositionMode_Exclusion)); 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); } void tst_QPainter::clippingBug() { QImage img(32, 32, QImage::Format_ARGB32_Premultiplied); img.fill(0); QImage expected = img; QPainter p(&expected); p.fillRect(1, 1, 30, 30, Qt::red); p.end(); QPainterPath path; path.addRect(1, 1, 30, 30); path.addRect(1, 1, 30, 30); path.addRect(1, 1, 30, 30); p.begin(&img); p.setClipPath(path); p.fillRect(0, 0, 32, 32, Qt::red); p.end(); QCOMPARE(img, expected); } void tst_QPainter::emptyClip() { QImage img(64, 64, QImage::Format_ARGB32_Premultiplied); QPainter p(&img); p.setRenderHints(QPainter::Antialiasing); p.setClipRect(0, 32, 64, 0); p.fillRect(0, 0, 64, 64, Qt::white); QPainterPath path; path.lineTo(64, 0); path.lineTo(64, 64); path.lineTo(40, 64); path.lineTo(40, 80); path.lineTo(0, 80); p.fillPath(path, Qt::green); } void tst_QPainter::drawImage_1x1() { QImage source(1, 1, QImage::Format_ARGB32_Premultiplied); source.fill(0xffffffff); QImage img(32, 32, QImage::Format_ARGB32_Premultiplied); img.fill(0xff000000); QPainter p(&img); p.drawImage(QRectF(0.9, 0.9, 32, 32), source); p.end(); QImage expected = img; expected.fill(0xff000000); p.begin(&expected); p.fillRect(1, 1, 31, 31, Qt::white); p.end(); QCOMPARE(img, expected); } void tst_QPainter::taskQT4444_dontOverflowDashOffset() { QPainter p; QPen pen; pen.setWidth(2); pen.setStyle(Qt::DashDotLine); QPointF point[4]; point[0] = QPointF(182.50868749707968,347.78457234212630); point[1] = QPointF(182.50868749707968,107.22501998401277); point[2] = QPointF(182.50868749707968,107.22501998401277); point[3] = QPointF(520.46600762283651,107.22501998401277); QImage crashImage(QSize(1000, 120), QImage::Format_ARGB32_Premultiplied); p.begin(&crashImage); p.setPen(pen); p.drawLines(point, 2); p.end(); QVERIFY(true); // Don't crash } void tst_QPainter::painterBegin() { QImage nullImage; QImage indexed8Image(16, 16, QImage::Format_Indexed8); QImage rgb32Image(16, 16, QImage::Format_RGB32); QImage argb32Image(16, 16, QImage::Format_ARGB32_Premultiplied); QPainter p; // Painting on null image should fail. QVERIFY(!p.begin(&nullImage)); // Check that the painter is not messed up by using it on another image. QVERIFY(p.begin(&rgb32Image)); QVERIFY(p.end()); // If painting on indexed8 image fails, the painter state should still be OK. if (p.begin(&indexed8Image)) QVERIFY(p.end()); QVERIFY(p.begin(&rgb32Image)); QVERIFY(p.end()); // Try opening a painter on the two different images. QVERIFY(p.begin(&rgb32Image)); QVERIFY(!p.begin(&argb32Image)); QVERIFY(p.end()); // Try opening two painters on the same image. QVERIFY(p.begin(&rgb32Image)); QPainter q; QVERIFY(!q.begin(&rgb32Image)); QVERIFY(!q.end()); QVERIFY(p.end()); // Try ending an inactive painter. QVERIFY(!p.end()); } void tst_QPainter::setPenColor(QPainter& p) { p.setPen(Qt::NoPen); // Setting color, then style // Should work even though the pen is "NoPen with color", temporarily. QPen newPen(p.pen()); newPen.setColor(Qt::red); QCOMPARE(p.pen().style(), newPen.style()); QCOMPARE(p.pen().style(), Qt::NoPen); p.setPen(newPen); QCOMPARE(p.pen().color().name(), QString("#ff0000")); QPen newPen2(p.pen()); newPen2.setStyle(Qt::SolidLine); p.setPen(newPen2); QCOMPARE(p.pen().color().name(), QString("#ff0000")); } void tst_QPainter::setPenColorOnImage() { QImage img(QSize(10, 10), QImage::Format_ARGB32_Premultiplied); QPainter p(&img); setPenColor(p); } void tst_QPainter::setPenColorOnPixmap() { QPixmap pix(10, 10); QPainter p(&pix); setPenColor(p); } #ifndef QT_NO_WIDGETS class TestProxy : public QGraphicsProxyWidget { public: TestProxy() : QGraphicsProxyWidget() {} void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) { QGraphicsProxyWidget::paint(painter, option, widget); deviceTransform = painter->deviceTransform(); } QTransform deviceTransform; }; class TestWidget : public QWidget { Q_OBJECT public: TestWidget() : QWidget(), painted(false) {} void paintEvent(QPaintEvent *) { QPainter p(this); deviceTransform = p.deviceTransform(); worldTransform = p.worldTransform(); painted = true; } QTransform deviceTransform; QTransform worldTransform; bool painted; }; void tst_QPainter::QTBUG5939_attachPainterPrivate() { QWidget *w = new QWidget(); QGraphicsScene *scene = new QGraphicsScene(); QGraphicsView *view = new QGraphicsView(scene, w); view->move(50 ,50); TestProxy *proxy = new TestProxy(); TestWidget *widget = new TestWidget(); proxy->setWidget(widget); scene->addItem(proxy); proxy->setTransform(QTransform().rotate(45)); w->resize(scene->sceneRect().size().toSize()); w->show(); QTRY_VERIFY(widget->painted); QVERIFY(widget->worldTransform.isIdentity()); QCOMPARE(widget->deviceTransform, proxy->deviceTransform); } #endif void tst_QPainter::clipBoundingRect() { QPixmap pix(500, 500); QPainter p(&pix); // Test a basic rectangle p.setClipRect(100, 100, 200, 100); QVERIFY(p.clipBoundingRect().contains(QRectF(100, 100, 200, 100))); QVERIFY(!p.clipBoundingRect().contains(QRectF(50, 50, 300, 200))); p.setClipRect(120, 120, 20, 20, Qt::IntersectClip); QVERIFY(p.clipBoundingRect().contains(QRect(120, 120, 20, 20))); QVERIFY(!p.clipBoundingRect().contains(QRectF(100, 100, 200, 100))); // Test a basic float rectangle p.setClipRect(QRectF(100, 100, 200, 100)); QVERIFY(p.clipBoundingRect().contains(QRectF(100, 100, 200, 100))); QVERIFY(!p.clipBoundingRect().contains(QRectF(50, 50, 300, 200))); p.setClipRect(QRectF(120, 120, 20, 20), Qt::IntersectClip); QVERIFY(p.clipBoundingRect().contains(QRect(120, 120, 20, 20))); QVERIFY(!p.clipBoundingRect().contains(QRectF(100, 100, 200, 100))); // Test a basic path + region QPainterPath path; path.addRect(100, 100, 200, 100); p.setClipPath(path); QVERIFY(p.clipBoundingRect().contains(QRectF(100, 100, 200, 100))); QVERIFY(!p.clipBoundingRect().contains(QRectF(50, 50, 300, 200))); p.setClipRegion(QRegion(120, 120, 20, 20), Qt::IntersectClip); QVERIFY(p.clipBoundingRect().contains(QRect(120, 120, 20, 20))); QVERIFY(!p.clipBoundingRect().contains(QRectF(100, 100, 200, 100))); p.setClipRect(0, 0, 500, 500); p.translate(250, 250); for (int i=0; i<360; ++i) { p.rotate(1); p.setClipRect(-100, -100, 200, 200, Qt::IntersectClip); } QVERIFY(p.clipBoundingRect().contains(QRectF(-100, -100, 200, 200))); QVERIFY(!p.clipBoundingRect().contains(QRectF(-250, -250, 500, 500))); } #if defined(Q_OS_MAC) // Only Mac supports sub pixel positions in raster engine currently void tst_QPainter::drawText_subPixelPositionsInRaster_qtbug5053() { QFontMetricsF fm(qApp->font()); QImage baseLine(fm.horizontalAdvance(QChar::fromLatin1('e')), fm.height(), QImage::Format_RGB32); baseLine.fill(Qt::white); { QPainter p(&baseLine); p.setRenderHint(QPainter::Qt4CompatiblePainting); p.drawText(0, fm.ascent(), QString::fromLatin1("e")); } bool foundDifferentRasterization = false; for (int i=1; i<12; ++i) { QImage comparison(baseLine.size(), QImage::Format_RGB32); comparison.fill(Qt::white); { QPainter p(&comparison); p.setRenderHint(QPainter::Qt4CompatiblePainting); p.drawText(QPointF(i / 12.0, fm.ascent()), QString::fromLatin1("e")); } if (comparison != baseLine) { foundDifferentRasterization = true; break; } } QVERIFY(foundDifferentRasterization); } #endif void tst_QPainter::drawPointScaled() { QImage image(32, 32, QImage::Format_RGB32); image.fill(0xffffffff); QPainter p(&image); p.scale(0.1, 0.1); QPen pen; pen.setWidth(1000); pen.setColor(Qt::red); p.setPen(pen); p.drawPoint(0, 0); p.end(); QCOMPARE(image.pixel(16, 16), 0xffff0000); } class GradientProducer : public QThread { protected: void run(); }; void GradientProducer::run() { QImage image(1, 1, QImage::Format_RGB32); QPainter p(&image); for (int i = 0; i < 1000; ++i) { QLinearGradient g; g.setColorAt(0, QColor(i % 256, 0, 0)); g.setColorAt(1, Qt::white); p.fillRect(image.rect(), g); } } void tst_QPainter::QTBUG14614_gradientCacheRaceCondition() { const int threadCount = 16; GradientProducer producers[threadCount]; for (int i = 0; i < threadCount; ++i) producers[i].start(); for (int i = 0; i < threadCount; ++i) producers[i].wait(); } void tst_QPainter::drawTextOpacity() { QImage image(32, 32, QImage::Format_RGB32); image.fill(0xffffffff); QPainter p(&image); p.setPen(QColor("#6F6F6F")); p.setOpacity(0.5); p.drawText(5, 30, QLatin1String("Qt")); p.end(); QImage copy = image; image.fill(0xffffffff); p.begin(&image); p.setPen(QColor("#6F6F6F")); p.drawLine(-10, -10, -1, -1); p.setOpacity(0.5); p.drawText(5, 30, QLatin1String("Qt")); p.end(); QCOMPARE(image, copy); } void tst_QPainter::QTBUG17053_zeroDashPattern() { QImage image(32, 32, QImage::Format_RGB32); image.fill(0xffffffff); QImage original = image; QVector pattern; pattern << qreal(0) << qreal(0); QPainter p(&image); QPen pen(Qt::black, 2.0); pen.setDashPattern(pattern); p.setPen(pen); p.drawLine(0, 0, image.width(), image.height()); QCOMPARE(image, original); } void tst_QPainter::QTBUG38781_NoBrushAndQBitmap() { QBitmap bitmap(10, 10); bitmap.fill(Qt::color0); QPainter p(&bitmap); p.setPen(Qt::color1); p.drawLine(0, 1, 9, 1); // at horizontal line at y=1 p.setBrush(Qt::NoBrush); p.drawRect(0, 0, 9, 9); // a rect all around QRgb white = qRgb(0xff, 0xff, 0xff); QRgb black = qRgb(0, 0, 0); QImage image = bitmap.toImage(); QCOMPARE(image.pixel(0, 0), black); QCOMPARE(image.pixel(5, 5), white); // Check that the rect didn't overwrite the line QCOMPARE(image.pixel(5, 1), black); } class TextDrawerThread : public QThread { public: void run(); QImage rendering; }; void TextDrawerThread::run() { rendering = QImage(100, 100, QImage::Format_ARGB32_Premultiplied); rendering.fill(0); QPainter p(&rendering); p.fillRect(10, 10, 100, 100, Qt::blue); p.setPen(Qt::green); p.drawText(20, 20, "some text"); p.end(); } void tst_QPainter::drawTextOutsideGuiThread() { QImage referenceRendering(100, 100, QImage::Format_ARGB32_Premultiplied); referenceRendering.fill(0); QPainter p(&referenceRendering); p.fillRect(10, 10, 100, 100, Qt::blue); p.setPen(Qt::green); p.drawText(20, 20, "some text"); p.end(); TextDrawerThread t; t.start(); t.wait(); QCOMPARE(referenceRendering, t.rendering); } void tst_QPainter::drawTextWithComplexBrush() { QImage texture(10, 10, QImage::Format_ARGB32_Premultiplied); texture.fill(Qt::red); QImage image(100, 100, QImage::Format_ARGB32_Premultiplied); image.fill(Qt::white); QPainter p(&image); QFont f = p.font(); f.setPixelSize(70); p.setFont(f); QBrush brush(Qt::white); brush.setTextureImage(texture); p.setPen(QPen(brush, 2)); p.drawText(10, 10, "Hello World"); int paintedPixels = getPaintedPixels(image, Qt::white); QVERIFY(paintedPixels > 0); } void tst_QPainter::QTBUG26013_squareCapStroke() { QImage image(4, 4, QImage::Format_RGB32); QPainter p(&image); p.setPen(QPen(Qt::black, 0, Qt::SolidLine, Qt::SquareCap)); for (int i = 0; i < 3; ++i) { qreal d = i / 3.0; image.fill(0xffffffff); p.drawLine(QLineF(0, d, 0, d + 2)); p.drawLine(QLineF(1, d, 3, d)); // ensure that a horizontal line and a vertical line with square cap round up (downwards) at the same time QCOMPARE(image.pixel(0, 0), image.pixel(1, 0)); image.fill(0xffffffff); p.drawLine(QLineF(d, 0, d + 2, 0)); p.drawLine(QLineF(d, 1, d, 3)); // ensure that a vertical line and a horizontal line with square cap round up (to the right) at the same time QCOMPARE(image.pixel(0, 0), image.pixel(0, 1)); } } void tst_QPainter::QTBUG25153_drawLine() { QImage image(2, 2, QImage::Format_RGB32); QVector styles; styles << Qt::FlatCap << Qt::SquareCap << Qt::RoundCap; foreach (Qt::PenCapStyle style, styles) { image.fill(0xffffffff); QPainter p(&image); p.setPen(QPen(Qt::black, 0, Qt::SolidLine, style)); p.drawLine(QLineF(0, 0, 0, 0)); p.end(); QCOMPARE(image.pixel(0, 0), 0xff000000); QCOMPARE(image.pixel(0, 1), 0xffffffff); QCOMPARE(image.pixel(1, 0), 0xffffffff); } } void tst_QPainter::blendARGBonRGB_data() { QTest::addColumn("dst_format"); QTest::addColumn("src_format"); QTest::addColumn("compositionMode"); QTest::addColumn("color"); QTest::addColumn("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; QTest::newRow("ARGB over RGBA8888") << QImage::Format_RGBA8888 << QImage::Format_ARGB32 << QPainter::CompositionMode_SourceOver << qRgba(255, 0, 0, 127) << 127; QTest::newRow("ARGB_PM over RGBA8888") << QImage::Format_RGBA8888 << QImage::Format_ARGB32_Premultiplied << QPainter::CompositionMode_SourceOver << qRgba(127, 0, 0, 127) << 127; QTest::newRow("ARGB source RGBA8888") << QImage::Format_RGBA8888 << QImage::Format_ARGB32 << QPainter::CompositionMode_Source << qRgba(255, 0, 0, 127) << 255; QTest::newRow("ARGB_PM source RGBA8888") << QImage::Format_RGBA8888 << QImage::Format_ARGB32_Premultiplied << QPainter::CompositionMode_Source << qRgba(127, 0, 0, 127) << 255; QTest::newRow("ARGB source-in RGBA8888") << QImage::Format_RGBA8888 << QImage::Format_ARGB32 << QPainter::CompositionMode_SourceIn << qRgba(255, 0, 0, 127) << 255; QTest::newRow("ARGB_PM source-in RGBA8888") << QImage::Format_RGBA8888 << QImage::Format_ARGB32_Premultiplied << QPainter::CompositionMode_SourceIn << qRgba(127, 0, 0, 127) << 255; // Only ARGB32 and RGBA8888 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; QTest::newRow("ARGB over RGB30") << QImage::Format_RGB30 << QImage::Format_ARGB32 << QPainter::CompositionMode_SourceOver << qRgba(255, 0, 0, 85) << 85; QTest::newRow("ARGB_PM over RGB30") << QImage::Format_RGB30 << QImage::Format_ARGB32_Premultiplied << QPainter::CompositionMode_SourceOver << qRgba(85, 0, 0, 85) << 85; QTest::newRow("ARGB source RGB30") << QImage::Format_RGB30 << QImage::Format_ARGB32 << QPainter::CompositionMode_Source << qRgba(255, 0, 0, 85) << 85; QTest::newRow("ARGB source RGB30") << QImage::Format_RGB30 << QImage::Format_ARGB32 << QPainter::CompositionMode_Source << qRgba(255, 0, 0, 120) << 85; QTest::newRow("ARGB_PM source RGB30") << QImage::Format_RGB30 << QImage::Format_ARGB32_Premultiplied << QPainter::CompositionMode_Source << qRgba(85, 0, 0, 85) << 85; QTest::newRow("ARGB_PM source RGB30") << QImage::Format_RGB30 << QImage::Format_ARGB32_Premultiplied << QPainter::CompositionMode_Source << qRgba(180, 0, 0, 180) << 170; QTest::newRow("ARGB source-in RGB30") << QImage::Format_RGB30 << QImage::Format_ARGB32 << QPainter::CompositionMode_SourceIn << qRgba(255, 0, 0, 85) << 85; QTest::newRow("ARGB_PM source-in RGB30") << QImage::Format_RGB30 << QImage::Format_ARGB32_Premultiplied << QPainter::CompositionMode_SourceIn << qRgba(85, 0, 0, 85) << 85; } 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(imageRgb.pixelColor(0,0).red(), expected_red); } enum CosmeticStrokerPaint { Antialiasing, Dashing }; static void paint_func(QPainter *p, CosmeticStrokerPaint type) { p->save(); switch (type) { case Antialiasing: p->setPen(Qt::black); p->setRenderHint(QPainter::Antialiasing); p->drawLine(4, 8, 42, 42); break; case Dashing: p->setPen(QPen(Qt::black, 1, Qt::DashLine, Qt::RoundCap, Qt::MiterJoin)); p->drawLine(8, 8, 42, 8); p->drawLine(42, 8, 42, 42); p->drawLine(42, 42, 8, 42); p->drawLine(8, 42, 8, 8); break; default: Q_ASSERT(false); break; } p->restore(); } Q_DECLARE_METATYPE(CosmeticStrokerPaint) void tst_QPainter::cosmeticStrokerClipping_data() { QTest::addColumn("paint"); QTest::newRow("antialiasing_paint") << Antialiasing; QTest::newRow("dashing_paint") << Dashing; } void tst_QPainter::cosmeticStrokerClipping() { QFETCH(CosmeticStrokerPaint, paint); QImage image(50, 50, QImage::Format_RGB32); image.fill(Qt::white); QPainter p(&image); paint_func(&p, paint); p.end(); QImage old = image.copy(); image.paintEngine()->setSystemClip(QRect(10, 0, image.width() - 10, image.height())); p.begin(&image); p.fillRect(image.rect(), Qt::white); paint_func(&p, paint); // doing same paint operation again with different system clip should not change the image QCOMPARE(old, image); old = image; p.setClipRect(QRect(20, 20, 30, 30)); p.fillRect(image.rect(), Qt::white); paint_func(&p, paint); // ditto for regular clips QCOMPARE(old, image); } void tst_QPainter::RasterOp_NotDestination() { QImage image(3, 3, QImage::Format_RGB32); image.fill(Qt::red); { QPainter p(&image); p.setCompositionMode(QPainter::RasterOp_NotDestination); p.fillRect(image.rect(), Qt::black); } uint pixel = image.pixel(1, 1); QCOMPARE(pixel, 0xff00ffff); } void tst_QPainter::drawTextNoHinting() { { QImage image(250, 250, QImage::Format_RGB32); QPainter p(&image); QFont font("Arial", 8); font.setHintingPreference(QFont::PreferNoHinting); font.setStyleStrategy(QFont::PreferAntialias); p.setFont(font); p.drawText(image.rect(), "ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz"); } // Testing for a crash when DirectWrite is used on Windows QVERIFY(true); } void tst_QPainter::drawPolyline_data() { QTest::addColumn< QVector >("points"); QTest::newRow("basic") << (QVector() << QPointF(10, 10) << QPointF(20, 10) << QPointF(20, 20)); QTest::newRow("clipped") << (QVector() << QPoint(-10, 100) << QPoint(-1, 100) << QPoint(-1, -2) << QPoint(100, -2) << QPoint(100, 40)); // QTBUG-31579 QTest::newRow("shortsegment") << (QVector() << QPoint(20, 100) << QPoint(20, 99) << QPoint(21, 99) << QPoint(21, 104)); // QTBUG-42398 QTest::newRow("edge") << (QVector() << QPointF(4.5, 121.6) << QPointF(9.4, 150.9) << QPointF(14.2, 184.8) << QPointF(19.1, 130.4)); } void tst_QPainter::drawPolyline() { QFETCH(QVector, points); QImage images[2]; for (int r = 0; r < 2; r++) { images[r] = QImage(150, 150, QImage::Format_ARGB32); images[r].fill(Qt::white); QPainter p(images + r); QPen pen(Qt::red, 0, Qt::SolidLine, Qt::FlatCap); p.setPen(pen); QVERIFY(p.pen().isCosmetic()); if (r) { for (int i = 0; i < points.count()-1; i++) { p.drawLine(points.at(i), points.at(i+1)); } } else { p.drawPolyline(points); } } QCOMPARE(images[0], images[1]); } void tst_QPainter::QTBUG50153_drawImage_assert() { QImage::Format formats[] = { QImage::Format_RGB32, // fetchTransformedBilinearARGB32PM QImage::Format_ARGB32 // fetchTransformedBilinear }; for (unsigned i = 0; i < sizeof(formats) / sizeof(formats[0]); i++) { QImage image(3027, 2999, formats[i]); QImage backingStore(image.size(), QImage::Format_ARGB32); QPainter backingStorePainter(&backingStore); QTransform transform; transform.scale( 0.999987, 0.999987 ); backingStorePainter.setTransform(transform); backingStorePainter.setRenderHint(QPainter::SmoothPixmapTransform, true); backingStorePainter.drawImage(0, 0, image); // No crash, all fine } } void tst_QPainter::rotateImage_data() { QTest::addColumn("image"); QTest::addColumn("smooth"); QImage image(128, 128, QImage::Format_RGB32); for (int y = 0; y < 128; ++y) { for (int x = 0; x < 128; ++x) { image.setPixel(x, y, qRgb(x + y, x + y, x + y)); } } QTest::newRow("fast") << image << false; QTest::newRow("smooth") << image << true; } void tst_QPainter::rotateImage() { QFETCH(QImage, image); QFETCH(bool, smooth); QImage dest(184, 184, QImage::Format_ARGB32_Premultiplied); dest.fill(Qt::transparent); QPainter painter(&dest); QTransform transform; transform.translate(92, 0); transform.rotate(45); painter.setTransform(transform); painter.setRenderHint(QPainter::SmoothPixmapTransform, smooth); painter.drawImage(0, 0, image); painter.end(); QRgb lastRow = qRgba(0, 0, 0, 0); for (int y = 0; y < 184; ++y) { QRgb row = qRgba(0, 0, 0, 0); for (int x = 0; x < 184; ++x) { QRgb pixel = dest.pixel(x, y); if (qAlpha(pixel) < 255) continue; if (qAlpha(row) == 0) { row = pixel; } else { QCOMPARE(qRed(pixel), qGreen(pixel)); QCOMPARE(qGreen(pixel), qBlue(pixel)); QVERIFY(qAbs(qRed(row) - qRed(pixel)) <= 2); QVERIFY(qAbs(qGreen(row) - qGreen(pixel)) <= 2); QVERIFY(qAbs(qBlue(row) - qBlue(pixel)) <= 2); } } if (qAlpha(row) && qAlpha(lastRow)) QVERIFY(qGray(lastRow) <= qGray(row)); lastRow = row; } } void tst_QPainter::QTBUG56252() { QImage sourceImage(1770, 1477, QImage::Format_RGB32); QImage rotatedImage(1478, 1771, QImage::Format_RGB32); QTransform transformCenter; transformCenter.translate(739.0, 885.5); transformCenter.rotate(270.0); transformCenter.translate(-885.0, -738.5); QPainter painter; painter.begin(&rotatedImage); painter.setTransform(transformCenter); painter.drawImage(QPoint(0, 0),sourceImage); painter.end(); // If no crash or illegal memory read, all is fine } void tst_QPainter::blendNullRGB32() { quint32 data[16] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; QImage nullImage((const uchar*)data, 16, 1, QImage::Format_RGB32); QImage image(16, 1, QImage::Format_RGB32); image.fill(Qt::white); QPainter paint(&image); paint.setCompositionMode(QPainter::CompositionMode_Source); paint.setOpacity(0.5); paint.drawImage(0, 0, nullImage); paint.end(); for (int i=0; i < image.width(); ++i) QVERIFY(image.pixel(i,0) != 0xffffffff); } void tst_QPainter::toRGB64() { QImage dst(10, 1, QImage::Format_BGR30); QImage src(10, 1, QImage::Format_RGB16); src.fill(Qt::white); QPainter paint(&dst); paint.drawImage(0, 0, src); paint.end(); for (int i=0; i < dst.width(); ++i) { QVERIFY(dst.pixelColor(i,0) == QColor(Qt::white)); } } void tst_QPainter::fillPolygon() { QImage image(50, 50, QImage::Format_RGB32); image.fill(Qt::white); QPainter painter(&image); QBrush brush(Qt::black, Qt::SolidPattern); painter.setBrush(brush); QPen pen(Qt::red, 0, Qt::SolidLine, Qt::FlatCap, Qt::MiterJoin); painter.setPen(pen); const QPoint diamondpoints[5] = { QPoint(-15, 0), QPoint(0, -15), QPoint(15, 0), QPoint(0, 15), QPoint(-15, 0) }; enum { Outside1, Border1, Inside, Border2, Outside2 } state; for (int i = 0; i < 16 ; i++) { for (int j = 0; j < 16 ; j++) { image.fill(Qt::white); painter.resetTransform(); painter.translate(25 + i/16., 25 + j/16.); painter.drawPolygon(diamondpoints, 5); for (int x = 0; x < 50; x++) { state = Outside1; for (int y = 0; y < 50; y++) { QRgb c = image.pixel(x, y); switch (state) { case Outside1: if (c == QColor(Qt::red).rgb()) state = Border1; else QCOMPARE(c, QColor(Qt::white).rgb()); break; case Border1: if (c == QColor(Qt::black).rgb()) state = Inside; else if (c == QColor(Qt::white).rgb()) state = Outside2; else QCOMPARE(c, QColor(Qt::red).rgb()); break; case Inside: if (c == QColor(Qt::red).rgb()) state = Border2; else QCOMPARE(c, QColor(Qt::black).rgb()); break; case Border2: if (c == QColor(Qt::white).rgb()) state = Outside2; else QCOMPARE(c, QColor(Qt::red).rgb()); break; case Outside2: QCOMPARE(c, QColor(Qt::white).rgb()); } } } for (int y = 0; y < 50; y++) { state = Outside1; for (int x = 0; x < 50; x++) { QRgb c = image.pixel(x, y); switch (state) { case Outside1: if (c == QColor(Qt::red).rgb()) state = Border1; else QCOMPARE(c, QColor(Qt::white).rgb()); break; case Border1: if (c == QColor(Qt::black).rgb()) state = Inside; else if (c == QColor(Qt::white).rgb()) state = Outside2; else QCOMPARE(c, QColor(Qt::red).rgb()); break; case Inside: if (c == QColor(Qt::red).rgb()) state = Border2; else QCOMPARE(c, QColor(Qt::black).rgb()); break; case Border2: if (c == QColor(Qt::white).rgb()) state = Outside2; else QCOMPARE(c, QColor(Qt::red).rgb()); break; case Outside2: QCOMPARE(c, QColor(Qt::white).rgb()); } } } } } } QTEST_MAIN(tst_QPainter) #include "tst_qpainter.moc"