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Diffstat (limited to 'tests/auto/qimage/tst_qimage.cpp')
| -rw-r--r-- | tests/auto/qimage/tst_qimage.cpp | 1774 |
1 files changed, 1774 insertions, 0 deletions
diff --git a/tests/auto/qimage/tst_qimage.cpp b/tests/auto/qimage/tst_qimage.cpp new file mode 100644 index 0000000..fcf99ab --- /dev/null +++ b/tests/auto/qimage/tst_qimage.cpp @@ -0,0 +1,1774 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the test suite of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + + +#include <QtTest/QtTest> + +#include <qimage.h> +#include <qimagereader.h> +#include <qlist.h> +#include <qmatrix.h> +#include <stdio.h> + +#include <qpainter.h> +#include <private/qdrawhelper_p.h> + + +//TESTED_CLASS= +//TESTED_FILES= +#if defined(Q_OS_SYMBIAN) +# define SRCDIR "" +#endif + +Q_DECLARE_METATYPE(QImage::Format) + +class tst_QImage : public QObject +{ + Q_OBJECT + +public: + tst_QImage(); + +private slots: + void create(); + void createInvalidXPM(); + void createFromUChar(); + void convertBitOrder(); + void formatHandlersInput_data(); + void formatHandlersInput(); + + void setAlphaChannel_data(); + void setAlphaChannel(); + + void alphaChannel(); + + void convertToFormat_data(); + void convertToFormat(); + + void createAlphaMask_data(); + void createAlphaMask(); +#ifndef QT_NO_IMAGE_HEURISTIC_MASK + void createHeuristicMask(); +#endif + + void dotsPerMeterZero(); + + void convertToFormatPreserveDotsPrMeter(); +#ifndef QT_NO_IMAGE_TEXT + void convertToFormatPreserveText(); +#endif + + void rotate_data(); + void rotate(); + +#if QT_VERSION >= 0x040102 + void copy(); +#endif + void setPixel_data(); + void setPixel(); + + void setNumColors(); + void setColor(); + + void rasterClipping(); + + void pointOverloads(); + void destructor(); + void cacheKey(); + + void smoothScale(); + void smoothScale2(); + void smoothScale3(); + + void smoothScaleBig(); + void smoothScaleAlpha(); + + void transformed_data(); + void transformed(); + void transformed2(); + + void scaled(); + + void paintEngine(); + void setAlphaChannelWhilePainting(); + + void smoothScaledSubImage(); + + void nullSize_data(); + void nullSize(); + + void premultipliedAlphaConsistency(); +}; + +tst_QImage::tst_QImage() + +{ +} + +// Test if QImage (or any functions called from QImage) throws an +// exception when creating an extremely large image. +// QImage::create() should return "false" in this case. +void tst_QImage::create() +{ + bool cr = true; +#if !defined(Q_WS_QWS) && !defined(Q_OS_WINCE) + try { +#endif + //QImage image(7000000, 7000000, 8, 256, QImage::IgnoreEndian); + QImage image(7000000, 7000000, QImage::Format_Indexed8); + image.setNumColors(256); + cr = !image.isNull(); +#if !defined(Q_WS_QWS) && !defined(Q_OS_WINCE) + } catch (...) { + } +#endif + QVERIFY( !cr ); +} + +void tst_QImage::createInvalidXPM() +{ + QTest::ignoreMessage(QtWarningMsg, "QImage::QImage(), XPM is not supported"); + const char *xpm[] = {""}; + QImage invalidXPM(xpm); + QVERIFY(invalidXPM.isNull()); +} + +void tst_QImage::createFromUChar() +{ + uchar data[] = { +#if Q_BYTE_ORDER == Q_BIG_ENDIAN + 0xFF, +#endif + 1,1,1, 0xFF, 2,2,2, 0xFF, 3,3,3, 0xFF, 4,4,4, +#if Q_BYTE_ORDER != Q_BIG_ENDIAN + 0xFF, +#endif + }; + + // When the data is const, nothing you do to the image will change the source data. + QImage i1((const uchar*)data, 2, 2, 8, QImage::Format_RGB32); + QCOMPARE(i1.pixel(0,0), 0xFF010101U); + QCOMPARE(i1.pixel(1,0), 0xFF020202U); + QCOMPARE(i1.pixel(0,1), 0xFF030303U); + QCOMPARE(i1.pixel(1,1), 0xFF040404U); + { + QImage i(i1); + i.setPixel(0,0,5); + } + QCOMPARE(i1.pixel(0,0), 0xFF010101U); + QCOMPARE(*(QRgb*)data, 0xFF010101U); + *((QRgb*)i1.bits()) = 7U; + QCOMPARE(i1.pixel(0,0), 7U); + QCOMPARE(*(QRgb*)data, 0xFF010101U); + + // Changing copies should not change the original image or data. + { + QImage i(i1); + i.setPixel(0,0,5); + QCOMPARE(*(QRgb*)data, 0xFF010101U); + i1.setPixel(0,0,9); + QCOMPARE(i1.pixel(0,0), 0xFF000009U); + QCOMPARE(i.pixel(0,0), 0xFF000005U); + } + QCOMPARE(i1.pixel(0,0), 0xFF000009U); + + // When the data is non-const, nothing you do to copies of the image will change the source data, + // but changing the image (here via bits()) will change the source data. + QImage i2((uchar*)data, 2, 2, 8, QImage::Format_RGB32); + QCOMPARE(i2.pixel(0,0), 0xFF010101U); + QCOMPARE(i2.pixel(1,0), 0xFF020202U); + QCOMPARE(i2.pixel(0,1), 0xFF030303U); + QCOMPARE(i2.pixel(1,1), 0xFF040404U); + { + QImage i(i2); + i.setPixel(0,0,5); + } + QCOMPARE(i2.pixel(0,0), 0xFF010101U); + QCOMPARE(*(QRgb*)data, 0xFF010101U); + *((QRgb*)i2.bits()) = 7U; + QCOMPARE(i2.pixel(0,0), 7U); + QCOMPARE(*(QRgb*)data, 7U); + + // Changing the data will change the image in either case. + QImage i3((uchar*)data, 2, 2, 8, QImage::Format_RGB32); + QImage i4((const uchar*)data, 2, 2, 8, QImage::Format_RGB32); + *(QRgb*)data = 6U; + QCOMPARE(i3.pixel(0,0), 6U); + QCOMPARE(i4.pixel(0,0), 6U); +} + +void tst_QImage::convertBitOrder() +{ +#if !defined(QT3_SUPPORT) + QSKIP("Qt compiled without Qt3Support", SkipAll); +#else + QImage i(9,5,1,2,QImage::LittleEndian); + qMemSet(i.bits(), 0, i.numBytes()); + + i.setDotsPerMeterX(9); + i.setDotsPerMeterY(5); + i.fill(0x12345678); + QVERIFY(!i.isNull()); + + QImage ni = i.convertBitOrder(QImage::BigEndian); + QVERIFY(!ni.isNull()); + QVERIFY(ni.bitOrder() == QImage::BigEndian); + + // A bunch of verifies to make sure that nothing was lost + QVERIFY(i.dotsPerMeterX() == ni.dotsPerMeterX()); + QVERIFY(i.dotsPerMeterY() == ni.dotsPerMeterY()); + QVERIFY(i.depth() == ni.depth()); + QVERIFY(i.size() == ni.size()); + QVERIFY(i.numColors() == ni.numColors()); +#endif +} + +void tst_QImage::formatHandlersInput_data() +{ + QTest::addColumn<QString>("testFormat"); + QTest::addColumn<QString>("testFile"); + #ifdef Q_OS_SYMBIAN + const QString prefix = QLatin1String(SRCDIR) + "images/"; + #else + const QString prefix = QLatin1String(SRCDIR) + "/images/"; + #endif + + // add a new line here when a file is added + QTest::newRow("ICO") << "ICO" << prefix + "image.ico"; + QTest::newRow("PNG") << "PNG" << prefix + "image.png"; + QTest::newRow("GIF") << "GIF" << prefix + "image.gif"; + QTest::newRow("BMP") << "BMP" << prefix + "image.bmp"; + QTest::newRow("JPEG") << "JPEG" << prefix + "image.jpg"; + QTest::newRow("PBM") << "PBM" << prefix + "image.pbm"; + QTest::newRow("PGM") << "PGM" << prefix + "image.pgm"; + QTest::newRow("PPM") << "PPM" << prefix + "image.ppm"; + QTest::newRow("XBM") << "XBM" << prefix + "image.xbm"; + QTest::newRow("XPM") << "XPM" << prefix + "image.xpm"; +} + +void tst_QImage::formatHandlersInput() +{ + QFETCH(QString, testFormat); + QFETCH(QString, testFile); + QList<QByteArray> formats = QImageReader::supportedImageFormats(); + // qDebug("Image input formats : %s", formats.join(" | ").latin1()); + + bool formatSupported = false; + for (QList<QByteArray>::Iterator it = formats.begin(); it != formats.end(); ++it) { + if (*it == testFormat.toLower()) { + formatSupported = true; + break; + } + } + if (formatSupported) { +// qDebug(QImage::imageFormat(testFile)); + QCOMPARE(testFormat.toLatin1().toLower(), QImageReader::imageFormat(testFile)); + } else { + QString msg = "Format not supported : "; + QSKIP(QString(msg + testFormat).toLatin1(), SkipSingle); + } +} + +void tst_QImage::setAlphaChannel_data() +{ + QTest::addColumn<int>("red"); + QTest::addColumn<int>("green"); + QTest::addColumn<int>("blue"); + QTest::addColumn<int>("alpha"); + QTest::addColumn<bool>("gray"); + + QTest::newRow("red at 0%, gray") << 255 << 0 << 0 << 0 << true; + QTest::newRow("red at 25%, gray") << 255 << 0 << 0 << 63 << true; + QTest::newRow("red at 50%, gray") << 255 << 0 << 0 << 127 << true; + QTest::newRow("red at 100%, gray") << 255 << 0 << 0 << 191 << true; + QTest::newRow("red at 0%, 32bit") << 255 << 0 << 0 << 0 << false; + QTest::newRow("red at 25%, 32bit") << 255 << 0 << 0 << 63 << false; + QTest::newRow("red at 50%, 32bit") << 255 << 0 << 0 << 127 << false; + QTest::newRow("red at 100%, 32bit") << 255 << 0 << 0 << 191 << false; + + QTest::newRow("green at 0%, gray") << 0 << 255 << 0 << 0 << true; + QTest::newRow("green at 25%, gray") << 0 << 255 << 0 << 63 << true; + QTest::newRow("green at 50%, gray") << 0 << 255 << 0 << 127 << true; + QTest::newRow("green at 100%, gray") << 0 << 255 << 0 << 191 << true; + QTest::newRow("green at 0%, 32bit") << 0 << 255 << 0 << 0 << false; + QTest::newRow("green at 25%, 32bit") << 0 << 255 << 0 << 63 << false; + QTest::newRow("green at 50%, 32bit") << 0 << 255 << 0 << 127 << false; + QTest::newRow("green at 100%, 32bit") << 0 << 255 << 0 << 191 << false; + + QTest::newRow("blue at 0%, gray") << 0 << 0 << 255 << 0 << true; + QTest::newRow("blue at 25%, gray") << 0 << 0 << 255 << 63 << true; + QTest::newRow("blue at 50%, gray") << 0 << 0 << 255 << 127 << true; + QTest::newRow("blue at 100%, gray") << 0 << 0 << 255 << 191 << true; + QTest::newRow("blue at 0%, 32bit") << 0 << 0 << 255 << 0 << false; + QTest::newRow("blue at 25%, 32bit") << 0 << 0 << 255 << 63 << false; + QTest::newRow("blue at 50%, 32bit") << 0 << 0 << 255 << 127 << false; + QTest::newRow("blue at 100%, 32bit") << 0 << 0 << 255 << 191 << false; +} + +void tst_QImage::setAlphaChannel() +{ + QFETCH(int, red); + QFETCH(int, green); + QFETCH(int, blue); + QFETCH(int, alpha); + QFETCH(bool, gray); + + int width = 100; + int height = 100; + + QImage image(width, height, QImage::Format_RGB32); + image.fill(qRgb(red, green, blue)); + + // Create the alpha channel + QImage alphaChannel; + if (gray) { + alphaChannel = QImage(width, height, QImage::Format_Indexed8); + alphaChannel.setNumColors(256); + for (int i=0; i<256; ++i) + alphaChannel.setColor(i, qRgb(i, i, i)); + alphaChannel.fill(alpha); + } else { + alphaChannel = QImage(width, height, QImage::Format_ARGB32); + alphaChannel.fill(qRgb(alpha, alpha, alpha)); + } + + image.setAlphaChannel(alphaChannel); + image = image.convertToFormat(QImage::Format_ARGB32); + QVERIFY(image.format() == QImage::Format_ARGB32); + + // alpha of 0 becomes black at a=0 due to premultiplication + QRgb pixel = alpha == 0 ? 0 : qRgba(red, green, blue, alpha); + bool allPixelsOK = true; + for (int y=0; y<height; ++y) { + for (int x=0; x<width; ++x) { + allPixelsOK &= image.pixel(x, y) == pixel; + } + } + QVERIFY(allPixelsOK); + + QImage outAlpha = image.alphaChannel(); + QCOMPARE(outAlpha.size(), image.size()); + + bool allAlphaOk = true; + for (int y=0; y<height; ++y) { + for (int x=0; x<width; ++x) { + allAlphaOk &= outAlpha.pixelIndex(x, y) == alpha; + } + } + QVERIFY(allAlphaOk); + +} + +void tst_QImage::alphaChannel() +{ + QImage img(10, 10, QImage::Format_Mono); + img.setColor(0, Qt::transparent); + img.setColor(1, Qt::black); + img.fill(0); + + QPainter p(&img); + p.fillRect(2, 2, 6, 6, Qt::black); + p.end(); + + QCOMPARE(img.alphaChannel(), img.convertToFormat(QImage::Format_ARGB32).alphaChannel()); +} + +void tst_QImage::convertToFormat_data() +{ + QTest::addColumn<int>("inFormat"); + QTest::addColumn<uint>("inPixel"); + QTest::addColumn<int>("resFormat"); + QTest::addColumn<uint>("resPixel"); + + QTest::newRow("red rgb32 -> argb32") << int(QImage::Format_RGB32) << 0xffff0000 + << int(QImage::Format_ARGB32) << 0xffff0000; + QTest::newRow("green rgb32 -> argb32") << int(QImage::Format_RGB32) << 0xff00ff00 + << int(QImage::Format_ARGB32) << 0xff00ff00; + QTest::newRow("blue rgb32 -> argb32") << int(QImage::Format_RGB32) << 0xff0000ff + << int(QImage::Format_ARGB32) << 0xff0000ff; + + QTest::newRow("red rgb32 -> rgb16") << int(QImage::Format_RGB32) << 0xffff0000 + << int(QImage::Format_RGB16) << 0xffff0000; + QTest::newRow("green rgb32 -> rgb16") << int(QImage::Format_RGB32) << 0xff00ff00 + << int(QImage::Format_RGB16) << 0xff00ff00; + QTest::newRow("blue rgb32 -> rgb16") << int(QImage::Format_RGB32) << 0xff0000ff + << int(QImage::Format_RGB16) << 0xff0000ff; + QTest::newRow("funky rgb32 -> rgb16") << int(QImage::Format_RGB32) << 0xfff0c080 + << int(QImage::Format_RGB16) << 0xfff7c384; + + QTest::newRow("red rgb32 -> argb32_pm") << int(QImage::Format_RGB32) << 0xffff0000 + << int(QImage::Format_ARGB32_Premultiplied) << 0xffff0000; + QTest::newRow("green rgb32 -> argb32_pm") << int(QImage::Format_RGB32) << 0xff00ff00 + << int(QImage::Format_ARGB32_Premultiplied) <<0xff00ff00; + QTest::newRow("blue rgb32 -> argb32_pm") << int(QImage::Format_RGB32) << 0xff0000ff + << int(QImage::Format_ARGB32_Premultiplied) << 0xff0000ff; + + QTest::newRow("semired argb32 -> pm") << int(QImage::Format_ARGB32) << 0x7fff0000u + << int(QImage::Format_ARGB32_Premultiplied) << 0x7f7f0000u; + QTest::newRow("semigreen argb32 -> pm") << int(QImage::Format_ARGB32) << 0x7f00ff00u + << int(QImage::Format_ARGB32_Premultiplied) << 0x7f007f00u; + QTest::newRow("semiblue argb32 -> pm") << int(QImage::Format_ARGB32) << 0x7f0000ffu + << int(QImage::Format_ARGB32_Premultiplied) << 0x7f00007fu; + QTest::newRow("semiwhite argb32 -> pm") << int(QImage::Format_ARGB32) << 0x7fffffffu + << int(QImage::Format_ARGB32_Premultiplied) << 0x7f7f7f7fu; + QTest::newRow("semiblack argb32 -> pm") << int(QImage::Format_ARGB32) << 0x7f000000u + << int(QImage::Format_ARGB32_Premultiplied) << 0x7f000000u; + + QTest::newRow("semired pm -> argb32") << int(QImage::Format_ARGB32_Premultiplied) << 0x7f7f0000u + << int(QImage::Format_ARGB32) << 0x7fff0000u; + QTest::newRow("semigreen pm -> argb32") << int(QImage::Format_ARGB32_Premultiplied) << 0x7f007f00u + << int(QImage::Format_ARGB32) << 0x7f00ff00u; + QTest::newRow("semiblue pm -> argb32") << int(QImage::Format_ARGB32_Premultiplied) << 0x7f00007fu + << int(QImage::Format_ARGB32) << 0x7f0000ffu; + QTest::newRow("semiwhite pm -> argb32") << int(QImage::Format_ARGB32_Premultiplied) << 0x7f7f7f7fu + << int(QImage::Format_ARGB32) << 0x7fffffffu; + QTest::newRow("semiblack pm -> argb32") << int(QImage::Format_ARGB32_Premultiplied) << 0x7f000000u + << int(QImage::Format_ARGB32) << 0x7f000000u; + + QTest::newRow("semired pm -> rgb32") << int(QImage::Format_ARGB32_Premultiplied) << 0x7f7f0000u + << int(QImage::Format_RGB32) << 0xffff0000u; + QTest::newRow("semigreen pm -> rgb32") << int(QImage::Format_ARGB32_Premultiplied) << 0x7f007f00u + << int(QImage::Format_RGB32) << 0xff00ff00u; + QTest::newRow("semiblue pm -> rgb32") << int(QImage::Format_ARGB32_Premultiplied) << 0x7f00007fu + << int(QImage::Format_RGB32) << 0xff0000ffu; + QTest::newRow("semiwhite pm -> rgb32") << int(QImage::Format_ARGB32_Premultiplied) << 0x7f7f7f7fu + << int(QImage::Format_RGB32) << 0xffffffffu; + QTest::newRow("semiblack pm -> rgb32") << int(QImage::Format_ARGB32_Premultiplied) << 0x7f000000u + << int(QImage::Format_RGB32) << 0xff000000u; + + QTest::newRow("semired argb32 -> rgb32") << int(QImage::Format_ARGB32) << 0x7fff0000u + << int(QImage::Format_RGB32) << 0xffff0000u; + QTest::newRow("semigreen argb32 -> rgb32") << int(QImage::Format_ARGB32) << 0x7f00ff00u + << int(QImage::Format_RGB32) << 0xff00ff00u; + QTest::newRow("semiblue argb32 -> rgb32") << int(QImage::Format_ARGB32) << 0x7f0000ffu + << int(QImage::Format_RGB32) << 0xff0000ffu; + QTest::newRow("semiwhite argb -> rgb32") << int(QImage::Format_ARGB32) << 0x7fffffffu + << int(QImage::Format_RGB32) << 0xffffffffu; + QTest::newRow("semiblack argb -> rgb32") << int(QImage::Format_ARGB32) << 0x7f000000u + << int(QImage::Format_RGB32) << 0xff000000u; + + QTest::newRow("black mono -> rgb32") << int(QImage::Format_Mono) << 0x00000000u + << int(QImage::Format_RGB32) << 0xff000000u; + + QTest::newRow("white mono -> rgb32") << int(QImage::Format_Mono) << 0x00000001u + << int(QImage::Format_RGB32) << 0xffffffffu; + QTest::newRow("red rgb16 -> argb32") << int(QImage::Format_RGB16) << 0xffff0000 + << int(QImage::Format_ARGB32) << 0xffff0000; + QTest::newRow("green rgb16 -> argb32") << int(QImage::Format_RGB16) << 0xff00ff00 + << int(QImage::Format_ARGB32) << 0xff00ff00; + QTest::newRow("blue rgb16 -> argb32") << int(QImage::Format_RGB16) << 0xff0000ff + << int(QImage::Format_ARGB32) << 0xff0000ff; + QTest::newRow("red rgb16 -> rgb16") << int(QImage::Format_RGB32) << 0xffff0000 + << int(QImage::Format_RGB16) << 0xffff0000; + QTest::newRow("green rgb16 -> rgb16") << int(QImage::Format_RGB32) << 0xff00ff00 + << int(QImage::Format_RGB16) << 0xff00ff00; + QTest::newRow("blue rgb16 -> rgb16") << int(QImage::Format_RGB32) << 0xff0000ff + << int(QImage::Format_RGB16) << 0xff0000ff; + QTest::newRow("semired argb32 -> rgb16") << int(QImage::Format_ARGB32) << 0x7fff0000u + << int(QImage::Format_RGB16) << 0xffff0000; + QTest::newRow("semigreen argb32 -> rgb16") << int(QImage::Format_ARGB32) << 0x7f00ff00u + << int(QImage::Format_RGB16) << 0xff00ff00; + QTest::newRow("semiblue argb32 -> rgb16") << int(QImage::Format_ARGB32) << 0x7f0000ffu + << int(QImage::Format_RGB16) << 0xff0000ff; + QTest::newRow("semired pm -> rgb16") << int(QImage::Format_ARGB32_Premultiplied) << 0x7f7f0000u + << int(QImage::Format_RGB16) << 0xffff0000u; + + QTest::newRow("semigreen pm -> rgb16") << int(QImage::Format_ARGB32_Premultiplied) << 0x7f007f00u + << int(QImage::Format_RGB16) << 0xff00ff00u; + QTest::newRow("semiblue pm -> rgb16") << int(QImage::Format_ARGB32_Premultiplied) << 0x7f00007fu + << int(QImage::Format_RGB16) << 0xff0000ffu; + QTest::newRow("semiwhite pm -> rgb16") << int(QImage::Format_ARGB32_Premultiplied) << 0x7f7f7f7fu + << int(QImage::Format_RGB16) << 0xffffffffu; + QTest::newRow("semiblack pm -> rgb16") << int(QImage::Format_ARGB32_Premultiplied) << 0x7f000000u + << int(QImage::Format_RGB16) << 0xff000000u; + + QTest::newRow("mono -> mono lsb") << int(QImage::Format_Mono) << 1u + << int(QImage::Format_MonoLSB) << 0xffffffffu; + QTest::newRow("mono lsb -> mono") << int(QImage::Format_MonoLSB) << 1u + << int(QImage::Format_Mono) << 0xffffffffu; + + QTest::newRow("red rgb32 -> rgb666") << int(QImage::Format_RGB32) << 0xffff0000 + << int(QImage::Format_RGB666) << 0xffff0000; + QTest::newRow("green rgb32 -> rgb666") << int(QImage::Format_RGB32) << 0xff00ff00 + << int(QImage::Format_RGB666) << 0xff00ff00; + QTest::newRow("blue rgb32 -> rgb666") << int(QImage::Format_RGB32) << 0xff0000ff + << int(QImage::Format_RGB666) << 0xff0000ff; + + QTest::newRow("red rgb16 -> rgb666") << int(QImage::Format_RGB16) << 0xffff0000 + << int(QImage::Format_RGB666) << 0xffff0000; + QTest::newRow("green rgb16 -> rgb666") << int(QImage::Format_RGB16) << 0xff00ff00 + << int(QImage::Format_RGB666) << 0xff00ff00; + QTest::newRow("blue rgb16 -> rgb666") << int(QImage::Format_RGB16) << 0xff0000ff + << int(QImage::Format_RGB666) << 0xff0000ff; + + QTest::newRow("red rgb32 -> rgb15") << int(QImage::Format_RGB32) << 0xffff0000 + << int(QImage::Format_RGB555) << 0xffff0000; + QTest::newRow("green rgb32 -> rgb15") << int(QImage::Format_RGB32) << 0xff00ff00 + << int(QImage::Format_RGB555) << 0xff00ff00; + QTest::newRow("blue rgb32 -> rgb15") << int(QImage::Format_RGB32) << 0xff0000ff + << int(QImage::Format_RGB555) << 0xff0000ff; + QTest::newRow("funky rgb32 -> rgb15") << int(QImage::Format_RGB32) << 0xfff0c080 + << int(QImage::Format_RGB555) << 0xfff7c684; + + QTest::newRow("red rgb16 -> rgb15") << int(QImage::Format_RGB16) << 0xffff0000 + << int(QImage::Format_RGB555) << 0xffff0000; + QTest::newRow("green rgb16 -> rgb15") << int(QImage::Format_RGB16) << 0xff00ff00 + << int(QImage::Format_RGB555) << 0xff00ff00; + QTest::newRow("blue rgb16 -> rgb15") << int(QImage::Format_RGB16) << 0xff0000ff + << int(QImage::Format_RGB555) << 0xff0000ff; + QTest::newRow("funky rgb16 -> rgb15") << int(QImage::Format_RGB16) << 0xfff0c080 + << int(QImage::Format_RGB555) << 0xfff7c684; + + QTest::newRow("red rgb32 -> argb8565") << int(QImage::Format_RGB32) << 0xffff0000 + << int(QImage::Format_ARGB8565_Premultiplied) << 0xffff0000; + QTest::newRow("green rgb32 -> argb8565") << int(QImage::Format_RGB32) << 0xff00ff00 + << int(QImage::Format_ARGB8565_Premultiplied) << 0xff00ff00; + QTest::newRow("blue rgb32 -> argb8565") << int(QImage::Format_RGB32) << 0xff0000ff + << int(QImage::Format_ARGB8565_Premultiplied) << 0xff0000ff; + + QTest::newRow("red rgb16 -> argb8565") << int(QImage::Format_RGB16) << 0xffff0000 + << int(QImage::Format_ARGB8565_Premultiplied) << 0xffff0000; + QTest::newRow("green rgb16 -> argb8565") << int(QImage::Format_RGB16) << 0xff00ff00 + << int(QImage::Format_ARGB8565_Premultiplied) << 0xff00ff00; + QTest::newRow("blue rgb16 -> argb8565") << int(QImage::Format_RGB16) << 0xff0000ff + << int(QImage::Format_ARGB8565_Premultiplied) << 0xff0000ff; + + QTest::newRow("red argb8565 -> argb32") << int(QImage::Format_ARGB8565_Premultiplied) << 0xffff0000 + << int(QImage::Format_ARGB32) << 0xffff0000; + QTest::newRow("green argb8565 -> argb32") << int(QImage::Format_ARGB8565_Premultiplied) << 0xff00ff00 + << int(QImage::Format_ARGB32) << 0xff00ff00; + QTest::newRow("blue argb8565 -> argb32") << int(QImage::Format_ARGB8565_Premultiplied) << 0xff0000ff + << int(QImage::Format_ARGB32) << 0xff0000ff; + + QTest::newRow("semired argb32 -> argb8565") << int(QImage::Format_ARGB32) << 0x7fff0000u + << int(QImage::Format_ARGB8565_Premultiplied) << 0x7f7b0000u; + QTest::newRow("semigreen argb32 -> argb8565") << int(QImage::Format_ARGB32) << 0x7f00ff00u + << int(QImage::Format_ARGB8565_Premultiplied) << 0x7f007d00u; + QTest::newRow("semiblue argb32 -> argb8565") << int(QImage::Format_ARGB32) << 0x7f0000ffu + << int(QImage::Format_ARGB8565_Premultiplied) << 0x7f00007bu; + + QTest::newRow("semired pm -> argb8565") << int(QImage::Format_ARGB32_Premultiplied) << 0x7f7f0000u + << int(QImage::Format_ARGB8565_Premultiplied) << 0x7f7b0000u; + QTest::newRow("semigreen pm -> argb8565") << int(QImage::Format_ARGB32_Premultiplied) << 0x7f007f00u + << int(QImage::Format_ARGB8565_Premultiplied) << 0x7f007d00u; + QTest::newRow("semiblue pm -> argb8565") << int(QImage::Format_ARGB32_Premultiplied) << 0x7f00007fu + << int(QImage::Format_ARGB8565_Premultiplied) << 0x7f00007bu; + QTest::newRow("semiwhite pm -> argb8565") << int(QImage::Format_ARGB32_Premultiplied) << 0x7f7f7f7fu + << int(QImage::Format_ARGB8565_Premultiplied) << 0x7f7b7d7bu; + QTest::newRow("semiblack pm -> argb8565") << int(QImage::Format_ARGB32_Premultiplied) << 0x7f000000u + << int(QImage::Format_ARGB8565_Premultiplied) << 0x7f000000u; + + QTest::newRow("red rgb666 -> argb32") << int(QImage::Format_RGB666) << 0xffff0000 + << int(QImage::Format_ARGB32) << 0xffff0000; + QTest::newRow("green rgb666 -> argb32") << int(QImage::Format_RGB666) << 0xff00ff00 + << int(QImage::Format_ARGB32) << 0xff00ff00; + QTest::newRow("blue rgb666 -> argb32") << int(QImage::Format_RGB666) << 0xff0000ff + << int(QImage::Format_ARGB32) << 0xff0000ff; + + QTest::newRow("semired argb32 -> rgb666") << int(QImage::Format_ARGB32) << 0x7fff0000u + << int(QImage::Format_RGB666) << 0xffff0000; + QTest::newRow("semigreen argb32 -> rgb666") << int(QImage::Format_ARGB32) << 0x7f00ff00u + << int(QImage::Format_RGB666) << 0xff00ff00; + QTest::newRow("semiblue argb32 -> rgb666") << int(QImage::Format_ARGB32) << 0x7f0000ffu + << int(QImage::Format_RGB666) << 0xff0000ff; + + QTest::newRow("semired pm -> rgb666") << int(QImage::Format_ARGB32_Premultiplied) << 0x7f7f0000u + << int(QImage::Format_RGB666) << 0xffff0000u; + QTest::newRow("semigreen pm -> rgb666") << int(QImage::Format_ARGB32_Premultiplied) << 0x7f007f00u + << int(QImage::Format_RGB666) << 0xff00ff00u; + QTest::newRow("semiblue pm -> rgb666") << int(QImage::Format_ARGB32_Premultiplied) << 0x7f00007fu + << int(QImage::Format_RGB666) << 0xff0000ffu; + QTest::newRow("semiwhite pm -> rgb666") << int(QImage::Format_ARGB32_Premultiplied) << 0x7f7f7f7fu + << int(QImage::Format_RGB666) << 0xffffffffu; + QTest::newRow("semiblack pm -> rgb666") << int(QImage::Format_ARGB32_Premultiplied) << 0x7f000000u + << int(QImage::Format_RGB666) << 0xff000000u; + + QTest::newRow("red rgb15 -> argb32") << int(QImage::Format_RGB555) << 0xffff0000 + << int(QImage::Format_ARGB32) << 0xffff0000; + QTest::newRow("green rgb15 -> argb32") << int(QImage::Format_RGB555) << 0xff00ff00 + << int(QImage::Format_ARGB32) << 0xff00ff00; + QTest::newRow("blue rgb15 -> argb32") << int(QImage::Format_RGB555) << 0xff0000ff + << int(QImage::Format_ARGB32) << 0xff0000ff; + + QTest::newRow("semired argb32 -> rgb15") << int(QImage::Format_ARGB32) << 0x7fff0000u + << int(QImage::Format_RGB555) << 0xffff0000; + QTest::newRow("semigreen argb32 -> rgb15") << int(QImage::Format_ARGB32) << 0x7f00ff00u + << int(QImage::Format_RGB555) << 0xff00ff00; + QTest::newRow("semiblue argb32 -> rgb15") << int(QImage::Format_ARGB32) << 0x7f0000ffu + << int(QImage::Format_RGB555) << 0xff0000ff; + + QTest::newRow("semired pm -> rgb15") << int(QImage::Format_ARGB32_Premultiplied) << 0x7f7f0000u + << int(QImage::Format_RGB555) << 0xffff0000u; + QTest::newRow("semigreen pm -> rgb15") << int(QImage::Format_ARGB32_Premultiplied) << 0x7f007f00u + << int(QImage::Format_RGB555) << 0xff00ff00u; + QTest::newRow("semiblue pm -> rgb15") << int(QImage::Format_ARGB32_Premultiplied) << 0x7f00007fu + << int(QImage::Format_RGB555) << 0xff0000ffu; + QTest::newRow("semiwhite pm -> rgb15") << int(QImage::Format_ARGB32_Premultiplied) << 0x7f7f7f7fu + << int(QImage::Format_RGB555) << 0xffffffffu; + QTest::newRow("semiblack pm -> rgb15") << int(QImage::Format_ARGB32_Premultiplied) << 0x7f000000u + << int(QImage::Format_RGB555) << 0xff000000u; + + + QTest::newRow("red rgb32 -> argb8555") << int(QImage::Format_RGB32) << 0xffff0000 + << int(QImage::Format_ARGB8555_Premultiplied) << 0xffff0000; + QTest::newRow("green rgb32 -> argb8555") << int(QImage::Format_RGB32) << 0xff00ff00 + << int(QImage::Format_ARGB8555_Premultiplied) << 0xff00ff00; + QTest::newRow("blue rgb32 -> argb8555") << int(QImage::Format_RGB32) << 0xff0000ff + << int(QImage::Format_ARGB8555_Premultiplied) << 0xff0000ff; + + QTest::newRow("red rgb16 -> argb8555") << int(QImage::Format_RGB16) << 0xffff0000 + << int(QImage::Format_ARGB8555_Premultiplied) << 0xffff0000; + QTest::newRow("green rgb16 -> argb8555") << int(QImage::Format_RGB16) << 0xff00ff00 + << int(QImage::Format_ARGB8555_Premultiplied) << 0xff00ff00; + QTest::newRow("blue rgb16 -> argb8555") << int(QImage::Format_RGB16) << 0xff0000ff + << int(QImage::Format_ARGB8555_Premultiplied) << 0xff0000ff; + + QTest::newRow("red argb8555 -> argb32") << int(QImage::Format_ARGB8555_Premultiplied) << 0xffff0000 + << int(QImage::Format_ARGB32) << 0xffff0000; + QTest::newRow("green argb8555 -> argb32") << int(QImage::Format_ARGB8555_Premultiplied) << 0xff00ff00 + << int(QImage::Format_ARGB32) << 0xff00ff00; + QTest::newRow("blue argb8555 -> argb32") << int(QImage::Format_ARGB8555_Premultiplied) << 0xff0000ff + << int(QImage::Format_ARGB32) << 0xff0000ff; + + QTest::newRow("semired argb32 -> argb8555") << int(QImage::Format_ARGB32) << 0x7fff0000u + << int(QImage::Format_ARGB8555_Premultiplied) << 0x7f7b0000u; + QTest::newRow("semigreen argb32 -> argb8555") << int(QImage::Format_ARGB32) << 0x7f00ff00u + << int(QImage::Format_ARGB8555_Premultiplied) << 0x7f007b00u; + QTest::newRow("semiblue argb32 -> argb8555") << int(QImage::Format_ARGB32) << 0x7f0000ffu + << int(QImage::Format_ARGB8555_Premultiplied) << 0x7f00007bu; + + QTest::newRow("semired pm -> argb8555") << int(QImage::Format_ARGB32_Premultiplied) << 0x7f7f0000u + << int(QImage::Format_ARGB8555_Premultiplied) << 0x7f7b0000u; + QTest::newRow("semigreen pm -> argb8555") << int(QImage::Format_ARGB32_Premultiplied) << 0x7f007f00u + << int(QImage::Format_ARGB8555_Premultiplied) << 0x7f007b00u; + QTest::newRow("semiblue pm -> argb8555") << int(QImage::Format_ARGB32_Premultiplied) << 0x7f00007fu + << int(QImage::Format_ARGB8555_Premultiplied) << 0x7f00007bu; + QTest::newRow("semiwhite pm -> argb8555") << int(QImage::Format_ARGB32_Premultiplied) << 0x7f7f7f7fu + << int(QImage::Format_ARGB8555_Premultiplied) << 0x7f7b7b7bu; + QTest::newRow("semiblack pm -> argb8555") << int(QImage::Format_ARGB32_Premultiplied) << 0x7f000000u + << int(QImage::Format_ARGB8555_Premultiplied) << 0x7f000000u; + + QTest::newRow("red rgb32 -> rgb888") << int(QImage::Format_RGB32) << 0xffff0000 + << int(QImage::Format_RGB888) << 0xffff0000; + QTest::newRow("green rgb32 -> rgb888") << int(QImage::Format_RGB32) << 0xff00ff00 + << int(QImage::Format_RGB888) << 0xff00ff00; + QTest::newRow("blue rgb32 -> rgb888") << int(QImage::Format_RGB32) << 0xff0000ff + << int(QImage::Format_RGB888) << 0xff0000ff; + + QTest::newRow("red rgb16 -> rgb888") << int(QImage::Format_RGB16) << 0xffff0000 + << int(QImage::Format_RGB888) << 0xffff0000; + QTest::newRow("green rgb16 -> rgb888") << int(QImage::Format_RGB16) << 0xff00ff00 + << int(QImage::Format_RGB888) << 0xff00ff00; + QTest::newRow("blue rgb16 -> rgb888") << int(QImage::Format_RGB16) << 0xff0000ff + << int(QImage::Format_RGB888) << 0xff0000ff; + + QTest::newRow("red rgb888 -> argb32") << int(QImage::Format_RGB888) << 0xffff0000 + << int(QImage::Format_ARGB32) << 0xffff0000; + QTest::newRow("green rgb888 -> argb32") << int(QImage::Format_RGB888) << 0xff00ff00 + << int(QImage::Format_ARGB32) << 0xff00ff00; + QTest::newRow("blue rgb888 -> argb32") << int(QImage::Format_RGB888) << 0xff0000ff + << int(QImage::Format_ARGB32) << 0xff0000ff; + + QTest::newRow("semired argb32 -> rgb888") << int(QImage::Format_ARGB32) << 0x7fff0000u + << int(QImage::Format_RGB888) << 0xffff0000; + QTest::newRow("semigreen argb32 -> rgb888") << int(QImage::Format_ARGB32) << 0x7f00ff00u + << int(QImage::Format_RGB888) << 0xff00ff00; + QTest::newRow("semiblue argb32 -> rgb888") << int(QImage::Format_ARGB32) << 0x7f0000ffu + << int(QImage::Format_RGB888) << 0xff0000ff; + + QTest::newRow("semired pm -> rgb888") << int(QImage::Format_ARGB32_Premultiplied) << 0x7f7f0000u + << int(QImage::Format_RGB888) << 0xffff0000u; + QTest::newRow("semigreen pm -> rgb888") << int(QImage::Format_ARGB32_Premultiplied) << 0x7f007f00u + << int(QImage::Format_RGB888) << 0xff00ff00u; + QTest::newRow("semiblue pm -> rgb888") << int(QImage::Format_ARGB32_Premultiplied) << 0x7f00007fu + << int(QImage::Format_RGB888) << 0xff0000ffu; + QTest::newRow("semiwhite pm -> rgb888") << int(QImage::Format_ARGB32_Premultiplied) << 0x7f7f7f7fu + << int(QImage::Format_RGB888) << 0xffffffffu; + QTest::newRow("semiblack pm -> rgb888") << int(QImage::Format_ARGB32_Premultiplied) << 0x7f000000u + << int(QImage::Format_RGB888) << 0xff000000u; +} + + +void tst_QImage::convertToFormat() +{ + QFETCH(int, inFormat); + QFETCH(uint, inPixel); + QFETCH(int, resFormat); + QFETCH(uint, resPixel); + + QImage src(32, 32, QImage::Format(inFormat)); + + if (inFormat == QImage::Format_Mono) { + src.setColor(0, qRgba(0,0,0,0xff)); + src.setColor(1, qRgba(255,255,255,0xff)); + } + + for (int y=0; y<src.height(); ++y) + for (int x=0; x<src.width(); ++x) + src.setPixel(x, y, inPixel); + + QImage result = src.convertToFormat(QImage::Format(resFormat)); + + QCOMPARE(src.width(), result.width()); + QCOMPARE(src.height(), result.height()); + + bool same = true; + for (int y=0; y<result.height(); ++y) { + for (int x=0; x<result.width(); ++x) { + QRgb pixel = result.pixel(x, y); + same &= (pixel == resPixel); + if (!same) { + printf("expect=%08x, result=%08x\n", resPixel, pixel); + y = 100000; + break; + } + + } + } + QVERIFY(same); + + // repeat tests converting from an image with nonstandard stride + + int dp = (src.depth() < 8 || result.depth() < 8) ? 8 : 1; + QImage src2(src.bits() + (dp*src.depth())/8, + src.width() - dp*2, + src.height(), src.bytesPerLine(), + src.format()); + if (src.depth() < 8) + src2.setColorTable(src.colorTable()); + + const QImage result2 = src2.convertToFormat(QImage::Format(resFormat)); + + QCOMPARE(src2.width(), result2.width()); + QCOMPARE(src2.height(), result2.height()); + + QImage expected2(result.bits() + (dp*result.depth())/8, + result.width() - dp*2, + result.height(), result.bytesPerLine(), + result.format()); + if (result.depth() < 8) + expected2.setColorTable(result.colorTable()); + + result2.save("result2.xpm", "XPM"); + expected2.save("expected2.xpm", "XPM"); + + QCOMPARE(result2, expected2); + QFile::remove(QLatin1String("result2.xpm")); + QFile::remove(QLatin1String("expected2.xpm")); +} + +void tst_QImage::createAlphaMask_data() +{ + QTest::addColumn<int>("x"); + QTest::addColumn<int>("y"); + QTest::addColumn<int>("alpha1"); + QTest::addColumn<int>("alpha2"); + + int alphas[] = { 0, 127, 255 }; + + for (unsigned a1 = 0; a1 < sizeof(alphas) / sizeof(int); ++a1) { + for (unsigned a2 = 0; a2 < sizeof(alphas) / sizeof(int); ++a2) { + if (a1 == a2) + continue; + for (int x=10; x<18; x+=3) { + for (int y=100; y<108; y+=3) { + QTest::newRow(qPrintable(QString::fromLatin1("x=%1, y=%2, a1=%3, a2=%4").arg(x).arg(y).arg(alphas[a1]).arg(alphas[a2]))) + << x << y << alphas[a1] << alphas[a2]; + } + } + } + } +} + +void tst_QImage::createAlphaMask() +{ + QFETCH(int, x); + QFETCH(int, y); + QFETCH(int, alpha1); + QFETCH(int, alpha2); + + QSize size(255, 255); + int pixelsInLines = size.width() + size.height() - 1; + int pixelsOutofLines = size.width() * size.height() - pixelsInLines; + + // Generate an white image with two lines, horizontal at y and vertical at x. + // Lines have alpha of alpha2, rest has alpha of alpha1 + QImage image(size, QImage::Format_ARGB32); + for (int cy=0; cy<image.height(); ++cy) { + for (int cx=0; cx<image.width(); ++cx) { + int alpha = (y == cy || x == cx) ? alpha2 : alpha1; + image.setPixel(cx, cy, qRgba(255, 255, 255, alpha)); + } + } + + QImage mask = image.createAlphaMask(Qt::OrderedAlphaDither); + + // Sanity check... + QCOMPARE(mask.width(), image.width()); + QCOMPARE(mask.height(), image.height()); + + // Sum up the number of pixels set for both lines and other area + int sumAlpha1 = 0; + int sumAlpha2 = 0; + for (int cy=0; cy<image.height(); ++cy) { + for (int cx=0; cx<image.width(); ++cx) { + int *alpha = (y == cy || x == cx) ? &sumAlpha2 : &sumAlpha1; + *alpha += mask.pixelIndex(cx, cy); + } + } + + // Compare the set bits to whats expected for that alpha. + const int threshold = 5; + QVERIFY(qAbs(sumAlpha1 * 255 / pixelsOutofLines - alpha1) < threshold); + QVERIFY(qAbs(sumAlpha2 * 255 / pixelsInLines - alpha2) < threshold); +} + +void tst_QImage::dotsPerMeterZero() +{ + QImage img(100, 100, QImage::Format_RGB32); + QVERIFY(!img.isNull()); + + int defaultDpmX = img.dotsPerMeterX(); + int defaultDpmY = img.dotsPerMeterY(); + QVERIFY(defaultDpmX != 0); + QVERIFY(defaultDpmY != 0); + + img.setDotsPerMeterX(0); + img.setDotsPerMeterY(0); + + QCOMPARE(img.dotsPerMeterX(), defaultDpmX); + QCOMPARE(img.dotsPerMeterY(), defaultDpmY); +} + +void tst_QImage::rotate_data() +{ + QTest::addColumn<QImage::Format>("format"); + QTest::addColumn<int>("degrees"); + + QVector<int> degrees; + degrees << 0 << 90 << 180 << 270; + + foreach (int d, degrees) { + QString title = QString("%1 %2").arg(d); + QTest::newRow(qPrintable(title.arg("Format_RGB32"))) + << QImage::Format_RGB32 << d; + QTest::newRow(qPrintable(title.arg("Format_ARGB32"))) + << QImage::Format_ARGB32 << d; + QTest::newRow(qPrintable(title.arg("Format_ARGB32_Premultiplied"))) + << QImage::Format_ARGB32_Premultiplied << d; + QTest::newRow(qPrintable(title.arg("Format_RGB16"))) + << QImage::Format_RGB16 << d; + QTest::newRow(qPrintable(title.arg("Format_ARGB8565_Premultiplied"))) + << QImage::Format_ARGB8565_Premultiplied << d; + QTest::newRow(qPrintable(title.arg("Format_RGB666"))) + << QImage::Format_RGB666 << d; + QTest::newRow(qPrintable(title.arg("Format_RGB555"))) + << QImage::Format_RGB555 << d; + QTest::newRow(qPrintable(title.arg("Format_ARGB8555_Premultiplied"))) + << QImage::Format_ARGB8555_Premultiplied << d; + QTest::newRow(qPrintable(title.arg("Format_RGB888"))) + << QImage::Format_RGB888 << d; + QTest::newRow(qPrintable(title.arg("Format_Indexed8"))) + << QImage::Format_Indexed8 << d; + } +} + +void tst_QImage::rotate() +{ + QFETCH(QImage::Format, format); + QFETCH(int, degrees); + + // test if rotate90 is lossless + int w = 54; + int h = 13; + QImage original(w, h, format); + original.fill(qRgb(255,255,255)); + + if (format == QImage::Format_Indexed8) { + original.setNumColors(256); + for (int i = 0; i < 255; ++i) + original.setColor(i, qRgb(0, i, i)); + } + + if (original.colorTable().isEmpty()) { + for (int x = 0; x < w; ++x) { + original.setPixel(x,0, qRgb(x,0,128)); + original.setPixel(x,h - 1, qRgb(0,255 - x,128)); + } + for (int y = 0; y < h; ++y) { + original.setPixel(0, y, qRgb(y,0,255)); + original.setPixel(w - 1, y, qRgb(0,255 - y,255)); + } + } else { + const int n = original.colorTable().size(); + for (int x = 0; x < w; ++x) { + original.setPixel(x, 0, x % n); + original.setPixel(x,h - 1, n - (x % n)); + } + for (int y = 0; y < h; ++y) { + original.setPixel(0, y, y % n); + original.setPixel(w - 1, y, n - (y % n)); + } + } + + // original.save("rotated90_original.png", "png"); + + // Initialize the matrix manually (do not use rotate) to avoid rounding errors + QMatrix matRotate90; + matRotate90.rotate(degrees); + QImage dest = original; + // And rotate it 4 times, then the image should be identical to the original + for (int i = 0; i < 4 ; ++i) { + dest = dest.transformed(matRotate90); + } + + // Make sure they are similar in format before we compare them. + dest = dest.convertToFormat(format); + + // dest.save("rotated90_result.png","png"); + QCOMPARE(original, dest); + + // Test with QMatrix::rotate 90 also, since we trust that now + matRotate90.rotate(degrees); + dest = original; + // And rotate it 4 times, then the image should be identical to the original + for (int i = 0; i < 4 ; ++i) { + dest = dest.transformed(matRotate90); + } + + // Make sure they are similar in format before we compare them. + dest = dest.convertToFormat(format); + + QCOMPARE(original, dest); +} + +#if QT_VERSION >= 0x040102 +void tst_QImage::copy() +{ + // Task 99250 + { + QImage img(16,16,QImage::Format_ARGB32); + img.copy(QRect(1000,1,1,1)); + } +} +#endif + +void tst_QImage::setPixel_data() +{ + QTest::addColumn<int>("format"); + QTest::addColumn<uint>("value"); + QTest::addColumn<uint>("expected"); + + QTest::newRow("ARGB32 red") << int(QImage::Format_ARGB32) + << 0xffff0000 << 0xffff0000; + QTest::newRow("ARGB32 green") << int(QImage::Format_ARGB32) + << 0xff00ff00 << 0xff00ff00; + QTest::newRow("ARGB32 blue") << int(QImage::Format_ARGB32) + << 0xff0000ff << 0xff0000ff; + QTest::newRow("RGB16 red") << int(QImage::Format_RGB16) + << 0xffff0000 << 0xf800u; + QTest::newRow("RGB16 green") << int(QImage::Format_RGB16) + << 0xff00ff00 << 0x07e0u; + QTest::newRow("RGB16 blue") << int(QImage::Format_RGB16) + << 0xff0000ff << 0x001fu; + QTest::newRow("ARGB8565_Premultiplied red") << int(QImage::Format_ARGB8565_Premultiplied) + << 0xffff0000 << 0xffff0000; + QTest::newRow("ARGB8565_Premultiplied green") << int(QImage::Format_ARGB8565_Premultiplied) + << 0xff00ff00 << 0xff00ff00; + QTest::newRow("ARGB8565_Premultiplied blue") << int(QImage::Format_ARGB8565_Premultiplied) + << 0xff0000ff << 0xff0000ff; + QTest::newRow("RGB666 red") << int(QImage::Format_RGB666) + << 0xffff0000 << 0xffff0000; + QTest::newRow("RGB666 green") << int(QImage::Format_RGB666) + << 0xff00ff00 << 0xff00ff00;; + QTest::newRow("RGB666 blue") << int(QImage::Format_RGB666) + << 0xff0000ff << 0xff0000ff; + QTest::newRow("RGB555 red") << int(QImage::Format_RGB555) + << 0xffff0000 << 0x7c00u; + QTest::newRow("RGB555 green") << int(QImage::Format_RGB555) + << 0xff00ff00 << 0x03e0u; + QTest::newRow("RGB555 blue") << int(QImage::Format_RGB555) + << 0xff0000ff << 0x001fu; + QTest::newRow("ARGB8555_Premultiplied red") << int(QImage::Format_ARGB8555_Premultiplied) + << 0xffff0000 << 0xffff0000; + QTest::newRow("ARGB8555_Premultiplied green") << int(QImage::Format_ARGB8555_Premultiplied) + << 0xff00ff00 << 0xff00ff00; + QTest::newRow("ARGB8555_Premultiplied blue") << int(QImage::Format_ARGB8555_Premultiplied) + << 0xff0000ff << 0xff0000ff; + QTest::newRow("RGB888 red") << int(QImage::Format_RGB888) + << 0xffff0000 << 0xffff0000; + QTest::newRow("RGB888 green") << int(QImage::Format_RGB888) + << 0xff00ff00 << 0xff00ff00; + QTest::newRow("RGB888 blue") << int(QImage::Format_RGB888) + << 0xff0000ff << 0xff0000ff; +} + +void tst_QImage::setPixel() +{ + QFETCH(int, format); + QFETCH(uint, value); + QFETCH(uint, expected); + + const int w = 13; + const int h = 15; + + QImage img(w, h, QImage::Format(format)); + + // fill image + for (int y = 0; y < h; ++y) + for (int x = 0; x < w; ++x) + img.setPixel(x, y, value); + + // check pixel values + switch (format) { + case int(QImage::Format_RGB32): + case int(QImage::Format_ARGB32): + case int(QImage::Format_ARGB32_Premultiplied): + { + for (int y = 0; y < h; ++y) { + const quint32 *row = (const quint32*)(img.scanLine(y)); + for (int x = 0; x < w; ++x) { + quint32 result = row[x]; + if (result != expected) + printf("[x,y]: %d,%d, expected=%08x, result=%08x\n", + x, y, expected, result); + QCOMPARE(uint(result), expected); + } + } + break; + } + case int(QImage::Format_RGB555): + case int(QImage::Format_RGB16): + { + for (int y = 0; y < h; ++y) { + const quint16 *row = (const quint16*)(img.scanLine(y)); + for (int x = 0; x < w; ++x) { + quint16 result = row[x]; + if (result != expected) + printf("[x,y]: %d,%d, expected=%04x, result=%04x\n", + x, y, expected, result); + QCOMPARE(uint(result), expected); + } + } + break; + } + case int(QImage::Format_RGB666): + { + for (int y = 0; y < h; ++y) { + const qrgb666 *row = (const qrgb666*)(img.scanLine(y)); + for (int x = 0; x < w; ++x) { + quint32 result = row[x]; + if (result != expected) + printf("[x,y]: %d,%d, expected=%04x, result=%04x\n", + x, y, expected, result); + QCOMPARE(result, expected); + } + } + break; + } + case int(QImage::Format_ARGB8565_Premultiplied): + { + for (int y = 0; y < h; ++y) { + const qargb8565 *row = (const qargb8565*)(img.scanLine(y)); + for (int x = 0; x < w; ++x) { + quint32 result = row[x]; + if (result != expected) + printf("[x,y]: %d,%d, expected=%04x, result=%04x\n", + x, y, expected, result); + QCOMPARE(result, expected); + } + } + break; + } + case int(QImage::Format_ARGB8555_Premultiplied): + { + for (int y = 0; y < h; ++y) { + const qargb8555 *row = (const qargb8555*)(img.scanLine(y)); + for (int x = 0; x < w; ++x) { + quint32 result = row[x]; + if (result != expected) + printf("[x,y]: %d,%d, expected=%04x, result=%04x\n", + x, y, expected, result); + QCOMPARE(result, expected); + } + } + break; + } + case int(QImage::Format_RGB888): + { + for (int y = 0; y < h; ++y) { + const qrgb888 *row = (const qrgb888*)(img.scanLine(y)); + for (int x = 0; x < w; ++x) { + qrgb888 result = row[x]; + if (result != expected) + printf("[x,y]: %d,%d, expected=%04x, result=%04x\n", + x, y, expected, quint32(result)); + QCOMPARE(uint(result), expected); + } + } + break; + } + default: + qFatal("Test not implemented for format %d", format); + } +} + +void tst_QImage::convertToFormatPreserveDotsPrMeter() +{ + QImage img(100, 100, QImage::Format_ARGB32_Premultiplied); + + int dpmx = 123; + int dpmy = 234; + img.setDotsPerMeterX(dpmx); + img.setDotsPerMeterY(dpmy); + img.fill(0x12345678); + + img = img.convertToFormat(QImage::Format_RGB32); + + QCOMPARE(img.dotsPerMeterX(), dpmx); + QCOMPARE(img.dotsPerMeterY(), dpmy); +} + +#ifndef QT_NO_IMAGE_TEXT +void tst_QImage::convertToFormatPreserveText() +{ + QImage img(100, 100, QImage::Format_ARGB32_Premultiplied); + + img.setText("foo", "bar"); + img.setText("foo2", "bar2"); + img.fill(0x12345678); + + QStringList listResult; + listResult << "foo" << "foo2"; + QString result = "foo: bar\n\nfoo2: bar2"; + + QImage imgResult1 = img.convertToFormat(QImage::Format_RGB32); + QCOMPARE(imgResult1.text(), result); + QCOMPARE(imgResult1.textKeys(), listResult); + + QVector<QRgb> colorTable(4); + for (int i = 0; i < 4; ++i) + colorTable[i] = QRgb(42); + QImage imgResult2 = img.convertToFormat(QImage::Format_MonoLSB, + colorTable); + QCOMPARE(imgResult2.text(), result); + QCOMPARE(imgResult2.textKeys(), listResult); +} +#endif // QT_NO_IMAGE_TEXT + +void tst_QImage::setNumColors() +{ + QImage img(0, 0, QImage::Format_Indexed8); + QTest::ignoreMessage(QtWarningMsg, "QImage::setNumColors: null image"); + img.setNumColors(256); + QCOMPARE(img.numColors(), 0); +} + +void tst_QImage::setColor() +{ + QImage img(0, 0, QImage::Format_Indexed8); + img.setColor(0, qRgba(18, 219, 108, 128)); + QCOMPARE(img.numColors(), 0); + + QImage img2(1, 1, QImage::Format_Indexed8); + img2.setColor(0, qRgba(18, 219, 108, 128)); + QCOMPARE(img2.numColors(), 1); +} + +/* Just some sanity checking that we don't draw outside the buffer of + * the image. Hopefully this will create crashes or at least some + * random test fails when broken. + */ +void tst_QImage::rasterClipping() +{ + QImage image(10, 10, QImage::Format_RGB32); + image.fill(0xffffffff); + + QPainter p(&image); + + p.drawLine(-1000, 5, 5, 5); + p.drawLine(-1000, 5, 1000, 5); + p.drawLine(5, 5, 1000, 5); + + p.drawLine(5, -1000, 5, 5); + p.drawLine(5, -1000, 5, 1000); + p.drawLine(5, 5, 5, 1000); + + p.setBrush(Qt::red); + + p.drawEllipse(3, 3, 4, 4); + p.drawEllipse(-100, -100, 210, 210); + + p.drawEllipse(-1000, 0, 2010, 2010); + p.drawEllipse(0, -1000, 2010, 2010); + p.drawEllipse(-2010, -1000, 2010, 2010); + p.drawEllipse(-1000, -2010, 2010, 2010); + QVERIFY(true); +} + +// Tests the new QPoint overloads in QImage in Qt 4.2 +void tst_QImage::pointOverloads() +{ + QImage image(100, 100, QImage::Format_RGB32); + image.fill(0xff00ff00); + + // IsValid + QVERIFY(image.valid(QPoint(0, 0))); + QVERIFY(image.valid(QPoint(99, 0))); + QVERIFY(image.valid(QPoint(0, 99))); + QVERIFY(image.valid(QPoint(99, 99))); + + QVERIFY(!image.valid(QPoint(50, -1))); // outside on the top + QVERIFY(!image.valid(QPoint(50, 100))); // outside on the bottom + QVERIFY(!image.valid(QPoint(-1, 50))); // outside on the left + QVERIFY(!image.valid(QPoint(100, 50))); // outside on the right + + // Test the pixel setter + image.setPixel(QPoint(10, 10), 0xff0000ff); + QCOMPARE(image.pixel(10, 10), 0xff0000ff); + + // pixel getter + QCOMPARE(image.pixel(QPoint(10, 10)), 0xff0000ff); + + // pixelIndex() + QImage indexed = image.convertToFormat(QImage::Format_Indexed8); + QCOMPARE(indexed.pixelIndex(10, 10), indexed.pixelIndex(QPoint(10, 10))); +} + +void tst_QImage::destructor() +{ + QPolygon poly(6); + poly.setPoint(0,-1455, 1435); + + QImage image(100, 100, QImage::Format_RGB32); + QPainter ptPix(&image); + ptPix.setPen(Qt::black); + ptPix.setBrush(Qt::black); + ptPix.drawPolygon(poly, Qt::WindingFill); + ptPix.end(); + +} + + +/* XPM */ +static const char *monoPixmap[] = { +/* width height ncolors chars_per_pixel */ +"4 4 2 1", +"x c #000000", +". c #ffffff", +/* pixels */ +"xxxx", +"x..x", +"x..x", +"xxxx" +}; + + +#ifndef QT_NO_IMAGE_HEURISTIC_MASK +void tst_QImage::createHeuristicMask() +{ + QImage img(monoPixmap); + img = img.convertToFormat(QImage::Format_MonoLSB); + QImage mask = img.createHeuristicMask(); + QImage newMask = mask.convertToFormat(QImage::Format_ARGB32_Premultiplied); + + // line 2 + QVERIFY(newMask.pixel(0,1) != newMask.pixel(1,1)); + QVERIFY(newMask.pixel(1,1) == newMask.pixel(2,1)); + QVERIFY(newMask.pixel(2,1) != newMask.pixel(3,1)); + + // line 3 + QVERIFY(newMask.pixel(0,2) != newMask.pixel(1,2)); + QVERIFY(newMask.pixel(1,2) == newMask.pixel(2,2)); + QVERIFY(newMask.pixel(2,2) != newMask.pixel(3,2)); +} +#endif + +void tst_QImage::cacheKey() +{ + QImage image1(2, 2, QImage::Format_RGB32); + qint64 image1_key = image1.cacheKey(); + QImage image2 = image1; + + QVERIFY(image2.cacheKey() == image1.cacheKey()); + image2.detach(); + QVERIFY(image2.cacheKey() != image1.cacheKey()); + QVERIFY(image1.cacheKey() == image1_key); +} + +void tst_QImage::smoothScale() +{ + unsigned int data[2] = { qRgba(0, 0, 0, 0), qRgba(128, 128, 128, 128) }; + + QImage imgX((unsigned char *)data, 2, 1, QImage::Format_ARGB32_Premultiplied); + QImage imgY((unsigned char *)data, 1, 2, QImage::Format_ARGB32_Premultiplied); + + QImage scaledX = imgX.scaled(QSize(4, 1), Qt::IgnoreAspectRatio, Qt::SmoothTransformation); + QImage scaledY = imgY.scaled(QSize(1, 4), Qt::IgnoreAspectRatio, Qt::SmoothTransformation); + + uint *scaled[2] = { + (unsigned int *)scaledX.bits(), + (unsigned int *)scaledY.bits() + }; + + int expected[4] = { 0, 32, 96, 128 }; + for (int image = 0; image < 2; ++image) { + for (int index = 0; index < 4; ++index) { + for (int component = 0; component < 4; ++component) { + int pixel = scaled[image][index]; + int val = (pixel >> (component * 8)) & 0xff; + + QCOMPARE(val, expected[index]); + } + } + } +} + +// test area sampling +void tst_QImage::smoothScale2() +{ + int sizes[] = { 2, 4, 8, 10, 16, 20, 32, 40, 64, 100, 101, 128, 0 }; + QImage::Format formats[] = { QImage::Format_ARGB32, QImage::Format_RGB32, QImage::Format_Invalid }; + for (int i = 0; sizes[i] != 0; ++i) { + for (int j = 0; formats[j] != QImage::Format_Invalid; ++j) { + int size = sizes[i]; + + QRgb expected = formats[j] == QImage::Format_ARGB32 ? qRgba(63, 127, 255, 255) : qRgb(63, 127, 255); + + QImage img(size, size, formats[j]); + img.fill(expected); + + // scale x down, y down + QImage scaled = img.scaled(QSize(1, 1), Qt::IgnoreAspectRatio, Qt::SmoothTransformation); + QRgb pixel = scaled.pixel(0, 0); + QCOMPARE(qAlpha(pixel), qAlpha(expected)); + QCOMPARE(qRed(pixel), qRed(expected)); + QCOMPARE(qGreen(pixel), qGreen(expected)); + QCOMPARE(qBlue(pixel), qBlue(expected)); + + // scale x down, y up + scaled = img.scaled(QSize(1, size * 2), Qt::IgnoreAspectRatio, Qt::SmoothTransformation); + for (int y = 0; y < scaled.height(); ++y) { + pixel = scaled.pixel(0, y); + QCOMPARE(qAlpha(pixel), qAlpha(expected)); + QCOMPARE(qRed(pixel), qRed(expected)); + QCOMPARE(qGreen(pixel), qGreen(expected)); + QCOMPARE(qBlue(pixel), qBlue(expected)); + } + + // scale x up, y down + scaled = img.scaled(QSize(size * 2, 1), Qt::IgnoreAspectRatio, Qt::SmoothTransformation); + for (int x = 0; x < scaled.width(); ++x) { + pixel = scaled.pixel(x, 0); + QCOMPARE(qAlpha(pixel), qAlpha(expected)); + QCOMPARE(qRed(pixel), qRed(expected)); + QCOMPARE(qGreen(pixel), qGreen(expected)); + QCOMPARE(qBlue(pixel), qBlue(expected)); + } + + // scale x up, y up + scaled = img.scaled(QSize(size * 2, size * 2), Qt::IgnoreAspectRatio, Qt::SmoothTransformation); + for (int y = 0; y < scaled.height(); ++y) { + for (int x = 0; x < scaled.width(); ++x) { + pixel = scaled.pixel(x, y); + QCOMPARE(qAlpha(pixel), qAlpha(expected)); + QCOMPARE(qRed(pixel), qRed(expected)); + QCOMPARE(qGreen(pixel), qGreen(expected)); + QCOMPARE(qBlue(pixel), qBlue(expected)); + } + } + } + } +} + +static inline int rand8() +{ + return int(256. * (qrand() / (RAND_MAX + 1.0))); +} + +static inline bool compare(int a, int b, int tolerance) +{ + return qAbs(a - b) <= tolerance; +} + +// compares img.scale against the bilinear filtering used by QPainter +void tst_QImage::smoothScale3() +{ + QImage img(128, 128, QImage::Format_RGB32); + for (int y = 0; y < img.height(); ++y) { + for (int x = 0; x < img.width(); ++x) { + const int red = rand8(); + const int green = rand8(); + const int blue = rand8(); + const int alpha = 255; + + img.setPixel(x, y, qRgba(red, green, blue, alpha)); + } + } + + qreal scales[2] = { .5, 2 }; + + for (int i = 0; i < 2; ++i) { + QImage a = img.scaled(img.size() * scales[i], Qt::IgnoreAspectRatio, Qt::SmoothTransformation); + QImage b(a.size(), a.format()); + b.fill(0x0); + + QPainter p(&b); + p.setRenderHint(QPainter::SmoothPixmapTransform); + p.scale(scales[i], scales[i]); + p.drawImage(0, 0, img); + p.end(); + + for (int y = 0; y < a.height(); ++y) { + for (int x = 0; x < a.width(); ++x) { + QRgb ca = a.pixel(x, y); + QRgb cb = b.pixel(x, y); + + // tolerate a little bit of rounding errors + QVERIFY(compare(qRed(ca), qRed(cb), 2)); + QVERIFY(compare(qGreen(ca), qGreen(cb), 2)); + QVERIFY(compare(qBlue(ca), qBlue(cb), 2)); + } + } + } +} + +void tst_QImage::smoothScaleBig() +{ +#if defined(Q_OS_WINCE) + int bigValue = 2000; +#elif defined(Q_OS_SYMBIAN) + int bigValue = 2000; +#else + int bigValue = 200000; +#endif + QImage tall(4, bigValue, QImage::Format_ARGB32); + tall.fill(0x0); + + QImage wide(bigValue, 4, QImage::Format_ARGB32); + wide.fill(0x0); + + QImage tallScaled = tall.scaled(4, tall.height() / 4, Qt::IgnoreAspectRatio, Qt::SmoothTransformation); + QImage wideScaled = wide.scaled(wide.width() / 4, 4, Qt::IgnoreAspectRatio, Qt::SmoothTransformation); + + QCOMPARE(tallScaled.pixel(0, 0), QRgb(0x0)); + QCOMPARE(wideScaled.pixel(0, 0), QRgb(0x0)); +} + +void tst_QImage::smoothScaleAlpha() +{ + QImage src(128, 128, QImage::Format_ARGB32_Premultiplied); + src.fill(0x0); + + QPainter srcPainter(&src); + srcPainter.setPen(Qt::NoPen); + srcPainter.setBrush(Qt::white); + srcPainter.drawEllipse(QRect(QPoint(), src.size())); + srcPainter.end(); + + QImage dst(32, 32, QImage::Format_ARGB32_Premultiplied); + dst.fill(0xffffffff); + QImage expected = dst; + + QPainter dstPainter(&dst); + dstPainter.drawImage(0, 0, src.scaled(dst.size(), Qt::IgnoreAspectRatio, Qt::SmoothTransformation)); + dstPainter.end(); + + QCOMPARE(dst, expected); +} + +static int count(const QImage &img, int x, int y, int dx, int dy, QRgb pixel) +{ + int i = 0; + while (x >= 0 && x < img.width() && y >= 0 && y < img.height()) { + i += (img.pixel(x, y) == pixel); + x += dx; + y += dy; + } + return i; +} + +const int transformed_image_width = 128; +const int transformed_image_height = 128; + +void tst_QImage::transformed_data() +{ + QTest::addColumn<QTransform>("transform"); + + { + QTransform transform; + transform.translate(10.4, 10.4); + QTest::newRow("Translate") << transform; + } + { + QTransform transform; + transform.scale(1.5, 1.5); + QTest::newRow("Scale") << transform; + } + { + QTransform transform; + transform.rotate(30); + QTest::newRow("Rotate 30") << transform; + } + { + QTransform transform; + transform.rotate(90); + QTest::newRow("Rotate 90") << transform; + } + { + QTransform transform; + transform.rotate(180); + QTest::newRow("Rotate 180") << transform; + } + { + QTransform transform; + transform.rotate(270); + QTest::newRow("Rotate 270") << transform; + } + { + QTransform transform; + transform.translate(transformed_image_width/2, transformed_image_height/2); + transform.rotate(155, Qt::XAxis); + transform.translate(-transformed_image_width/2, -transformed_image_height/2); + QTest::newRow("Perspective 1") << transform; + } + { + QTransform transform; + transform.rotate(155, Qt::XAxis); + transform.translate(-transformed_image_width/2, -transformed_image_height/2); + QTest::newRow("Perspective 2") << transform; + } +} + +void tst_QImage::transformed() +{ + QFETCH(QTransform, transform); + + QImage img(transformed_image_width, transformed_image_height, QImage::Format_ARGB32_Premultiplied); + QPainter p(&img); + p.fillRect(0, 0, img.width(), img.height(), Qt::red); + p.drawRect(0, 0, img.width()-1, img.height()-1); + p.end(); + + QImage transformed = img.transformed(transform, Qt::SmoothTransformation); + + // all borders should have touched pixels + + QVERIFY(count(transformed, 0, 0, 1, 0, 0x0) < transformed.width()); + QVERIFY(count(transformed, 0, 0, 0, 1, 0x0) < transformed.height()); + + QVERIFY(count(transformed, 0, img.height() - 1, 1, 0, 0x0) < transformed.width()); + QVERIFY(count(transformed, img.width() - 1, 0, 0, 1, 0x0) < transformed.height()); + + QImage transformedPadded(transformed.width() + 2, transformed.height() + 2, img.format()); + transformedPadded.fill(0x0); + + p.begin(&transformedPadded); + p.setRenderHint(QPainter::SmoothPixmapTransform); + p.setRenderHint(QPainter::Antialiasing); + p.setTransform(transformed.trueMatrix(transform, img.width(), img.height()) * QTransform().translate(1, 1)); + p.drawImage(0, 0, img); + p.end(); + + // no borders should have touched pixels since we have a one-pixel padding + + QCOMPARE(count(transformedPadded, 0, 0, 1, 0, 0x0), transformedPadded.width()); + QCOMPARE(count(transformedPadded, 0, 0, 0, 1, 0x0), transformedPadded.height()); + + QCOMPARE(count(transformedPadded, 0, transformedPadded.height() - 1, 1, 0, 0x0), transformedPadded.width()); + QCOMPARE(count(transformedPadded, transformedPadded.width() - 1, 0, 0, 1, 0x0), transformedPadded.height()); +} + +void tst_QImage::transformed2() +{ + QImage img(3, 3, QImage::Format_Mono); + QPainter p(&img); + p.fillRect(0, 0, 3, 3, Qt::white); + p.fillRect(0, 0, 3, 3, Qt::Dense4Pattern); + p.end(); + + QTransform transform; + transform.scale(3, 3); + + QImage expected(9, 9, QImage::Format_Mono); + p.begin(&expected); + p.fillRect(0, 0, 9, 9, Qt::white); + p.setBrush(Qt::black); + p.setPen(Qt::NoPen); + p.drawRect(3, 0, 3, 3); + p.drawRect(0, 3, 3, 3); + p.drawRect(6, 3, 3, 3); + p.drawRect(3, 6, 3, 3); + p.end(); + + { + QImage actual = img.transformed(transform); + + QCOMPARE(actual.format(), expected.format()); + QCOMPARE(actual.size(), expected.size()); + QCOMPARE(actual, expected); + } + + { + transform.rotate(-90); + QImage actual = img.transformed(transform); + + QCOMPARE(actual.convertToFormat(QImage::Format_ARGB32_Premultiplied), + expected.convertToFormat(QImage::Format_ARGB32_Premultiplied)); + } +} + +void tst_QImage::scaled() +{ + QImage img(102, 3, QImage::Format_Mono); + QPainter p(&img); + p.fillRect(0, 0, img.width(), img.height(), Qt::white); + p.end(); + + QImage scaled = img.scaled(1994, 10); + + QImage expected(1994, 10, QImage::Format_Mono); + p.begin(&expected); + p.fillRect(0, 0, expected.width(), expected.height(), Qt::white); + p.end(); + + QCOMPARE(scaled, expected); +} + +void tst_QImage::paintEngine() +{ + QImage img; + + QPaintEngine *engine; + { + QImage temp(100, 100, QImage::Format_RGB32); + temp.fill(0xff000000); + + QPainter p(&temp); + p.fillRect(80,80,10,10,Qt::blue); + p.end(); + + img = temp; + + engine = temp.paintEngine(); + } + + { + QPainter p(&img); + + p.fillRect(80,10,10,10,Qt::yellow); + p.end(); + } + + QImage expected(100, 100, QImage::Format_RGB32); + expected.fill(0xff000000); + + QPainter p(&expected); + p.fillRect(80,80,10,10,Qt::blue); + p.fillRect(80,10,10,10,Qt::yellow); + p.end(); + + QCOMPARE(engine, img.paintEngine()); + QCOMPARE(img, expected); +} + +void tst_QImage::setAlphaChannelWhilePainting() +{ + QImage image(100, 100, QImage::Format_ARGB32); + image.fill(Qt::black); + QPainter p(&image); + + image.setAlphaChannel(image.createMaskFromColor(QColor(Qt::black).rgb(), Qt::MaskInColor)); +} + + +// See task 240047 for details +void tst_QImage::smoothScaledSubImage() +{ + QImage original(128, 128, QImage::Format_RGB32); + QPainter p(&original); + p.fillRect(0, 0, 64, 128, Qt::black); + p.fillRect(64, 0, 64, 128, Qt::white); + p.end(); + + QImage subimage(((const QImage &) original).bits(), 32, 32, original.bytesPerLine(), QImage::Format_RGB32); // only in the black part of the source... + + QImage scaled = subimage.scaled(8, 8, Qt::IgnoreAspectRatio, Qt::SmoothTransformation); + + for (int y=0; y<scaled.height(); ++y) + for (int x=0; x<scaled.width(); ++x) + QCOMPARE(scaled.pixel(x, y), 0xff000000); +} + +void tst_QImage::nullSize_data() +{ + QTest::addColumn<QImage>("image"); + QTest::newRow("null image") << QImage(); + QTest::newRow("zero-size image") << QImage(0, 0, QImage::Format_RGB32); +} + +void tst_QImage::nullSize() +{ + QFETCH(QImage, image); + QCOMPARE(image.isNull(), true); + QCOMPARE(image.width(), image.size().width()); + QCOMPARE(image.height(), image.size().height()); +} + +void tst_QImage::premultipliedAlphaConsistency() +{ + QImage img(256, 1, QImage::Format_ARGB32); + for (int x = 0; x < 256; ++x) + img.setPixel(x, 0, (x << 24) | 0xffffff); + + QImage converted = img.convertToFormat(QImage::Format_ARGB8565_Premultiplied); + QImage pm32 = converted.convertToFormat(QImage::Format_ARGB32_Premultiplied); + + for (int i = 0; i < pm32.width(); ++i) { + QRgb pixel = pm32.pixel(i, 0); + QVERIFY(qRed(pixel) <= qAlpha(pixel)); + QVERIFY(qGreen(pixel) <= qAlpha(pixel)); + QVERIFY(qBlue(pixel) <= qAlpha(pixel)); + } +} + +QTEST_MAIN(tst_QImage) +#include "tst_qimage.moc" |