diff options
Diffstat (limited to 'tests/auto/gui/painting/qcolorspace/tst_qcolorspace.cpp')
| -rw-r--r-- | tests/auto/gui/painting/qcolorspace/tst_qcolorspace.cpp | 426 |
1 files changed, 426 insertions, 0 deletions
diff --git a/tests/auto/gui/painting/qcolorspace/tst_qcolorspace.cpp b/tests/auto/gui/painting/qcolorspace/tst_qcolorspace.cpp new file mode 100644 index 0000000000..bc1a45013c --- /dev/null +++ b/tests/auto/gui/painting/qcolorspace/tst_qcolorspace.cpp @@ -0,0 +1,426 @@ +/**************************************************************************** +** +** Copyright (C) 2018 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 <QtTest/QtTest> + +#include <qcolorspace.h> +#include <qimage.h> +#include <qimagereader.h> + +#include <private/qcolorspace_p.h> + +Q_DECLARE_METATYPE(QColorSpace::ColorSpaceId) +Q_DECLARE_METATYPE(QColorSpace::Primaries) +Q_DECLARE_METATYPE(QColorSpace::TransferFunction) + +class tst_QColorSpace : public QObject +{ + Q_OBJECT + +public: + tst_QColorSpace(); + +private slots: + void namedColorSpaces_data(); + void namedColorSpaces(); + + void toIccProfile_data(); + void toIccProfile(); + + void fromIccProfile_data(); + void fromIccProfile(); + + void imageConversion_data(); + void imageConversion(); + + void loadImage(); + + void primaries(); + void primariesXyz(); + void primaries2_data(); + void primaries2(); + void invalidPrimaries(); + + void changeTransferFunction(); + void changePrimaries(); +}; + +tst_QColorSpace::tst_QColorSpace() +{ } + + +void tst_QColorSpace::namedColorSpaces_data() +{ + QTest::addColumn<QColorSpace::ColorSpaceId>("colorSpaceId"); + QTest::addColumn<QColorSpace::Primaries>("primariesId"); + QTest::addColumn<QColorSpace::TransferFunction>("transferFunctionId"); + + QTest::newRow("sRGB") << QColorSpace::SRgb + << QColorSpace::Primaries::SRgb + << QColorSpace::TransferFunction::SRgb; + QTest::newRow("sRGB Linear") << QColorSpace::SRgbLinear + << QColorSpace::Primaries::SRgb + << QColorSpace::TransferFunction::Linear; + QTest::newRow("Adobe RGB") << QColorSpace::AdobeRgb + << QColorSpace::Primaries::AdobeRgb + << QColorSpace::TransferFunction::Gamma; + QTest::newRow("Display-P3") << QColorSpace::DisplayP3 + << QColorSpace::Primaries::DciP3D65 + << QColorSpace::TransferFunction::SRgb; + QTest::newRow("ProPhoto RGB") << QColorSpace::ProPhotoRgb + << QColorSpace::Primaries::ProPhotoRgb + << QColorSpace::TransferFunction::ProPhotoRgb; + QTest::newRow("BT.2020") << QColorSpace::Bt2020 + << QColorSpace::Primaries::Bt2020 + << QColorSpace::TransferFunction::Bt2020; +} + +void tst_QColorSpace::namedColorSpaces() +{ + QFETCH(QColorSpace::ColorSpaceId, colorSpaceId); + QFETCH(QColorSpace::Primaries, primariesId); + QFETCH(QColorSpace::TransferFunction, transferFunctionId); + + QColorSpace colorSpace = colorSpaceId; + + QVERIFY(colorSpace.isValid()); + + QCOMPARE(colorSpace.colorSpaceId(), colorSpaceId); + QCOMPARE(colorSpace.primaries(), primariesId); + QCOMPARE(colorSpace.transferFunction(), transferFunctionId); +} + + +void tst_QColorSpace::toIccProfile_data() +{ + namedColorSpaces_data(); +} + +void tst_QColorSpace::toIccProfile() +{ + QFETCH(QColorSpace::ColorSpaceId, colorSpaceId); + QFETCH(QColorSpace::Primaries, primariesId); + QFETCH(QColorSpace::TransferFunction, transferFunctionId); + + Q_UNUSED(primariesId); + Q_UNUSED(transferFunctionId); + + QColorSpace colorSpace = colorSpaceId; + QByteArray iccProfile = colorSpace.iccProfile(); + QVERIFY(!iccProfile.isEmpty()); + + QColorSpace colorSpace2 = QColorSpace::fromIccProfile(iccProfile); + QVERIFY(colorSpace2.isValid()); + + QCOMPARE(colorSpace2, colorSpace); + + QByteArray iccProfile2 = colorSpace2.iccProfile(); + QVERIFY(!iccProfile2.isEmpty()); + + QCOMPARE(iccProfile2, iccProfile); +} + +void tst_QColorSpace::fromIccProfile_data() +{ + QTest::addColumn<QString>("testProfile"); + QTest::addColumn<QColorSpace::ColorSpaceId>("colorSpaceId"); + QTest::addColumn<QColorSpace::TransferFunction>("transferFunction"); + QTest::addColumn<QString>("description"); + + QString prefix = QFINDTESTDATA("resources/"); + // Read the official sRGB ICCv2 profile: + QTest::newRow("sRGB2014 (ICCv2)") << prefix + "sRGB2014.icc" << QColorSpace::SRgb + << QColorSpace::TransferFunction::SRgb << QString("sRGB2014"); + // My monitor's profile: + QTest::newRow("HP ZR30w (ICCv4)") << prefix + "HP_ZR30w.icc" << QColorSpace::Unknown + << QColorSpace::TransferFunction::Gamma << QString("HP Z30i"); +} + +void tst_QColorSpace::fromIccProfile() +{ + QFETCH(QString, testProfile); + QFETCH(QColorSpace::ColorSpaceId, colorSpaceId); + QFETCH(QColorSpace::TransferFunction, transferFunction); + QFETCH(QString, description); + + QFile file(testProfile); + file.open(QIODevice::ReadOnly); + QByteArray iccProfile = file.readAll(); + QColorSpace fileColorSpace = QColorSpace::fromIccProfile(iccProfile); + QVERIFY(fileColorSpace.isValid()); + + QCOMPARE(fileColorSpace.colorSpaceId(), colorSpaceId); + QCOMPARE(fileColorSpace.transferFunction(), transferFunction); + QCOMPARE(QColorSpacePrivate::get(fileColorSpace)->description, description); +} + +void tst_QColorSpace::imageConversion_data() +{ + QTest::addColumn<QColorSpace::ColorSpaceId>("fromColorSpace"); + QTest::addColumn<QColorSpace::ColorSpaceId>("toColorSpace"); + QTest::addColumn<int>("tolerance"); + + QTest::newRow("sRGB -> Display-P3") << QColorSpace::SRgb << QColorSpace::DisplayP3 << 0; + QTest::newRow("sRGB -> Adobe RGB") << QColorSpace::SRgb << QColorSpace::AdobeRgb << 2; + QTest::newRow("Display-P3 -> sRGB") << QColorSpace::DisplayP3 << QColorSpace::SRgb << 0; + QTest::newRow("Adobe RGB -> sRGB") << QColorSpace::AdobeRgb << QColorSpace::SRgb << 2; + QTest::newRow("Display-P3 -> Adobe RGB") << QColorSpace::DisplayP3 << QColorSpace::AdobeRgb << 2; + QTest::newRow("Display-P3 -> BT.2020") << QColorSpace::DisplayP3 << QColorSpace::Bt2020 << 4; + QTest::newRow("sRGB -> sRGB Linear") << QColorSpace::SRgb << QColorSpace::SRgbLinear << 0; +} + +void tst_QColorSpace::imageConversion() +{ + QFETCH(QColorSpace::ColorSpaceId, fromColorSpace); + QFETCH(QColorSpace::ColorSpaceId, toColorSpace); + QFETCH(int, tolerance); + + QImage testImage(256, 1, QImage::Format_RGB32); + + for (int i = 0; i < 256; ++i) + testImage.setPixel(i, 0, qRgb(i, i, i)); + + testImage.setColorSpace(fromColorSpace); + QCOMPARE(testImage.colorSpace(), QColorSpace(fromColorSpace)); + + testImage.convertToColorSpace(toColorSpace); + QCOMPARE(testImage.colorSpace(), QColorSpace(toColorSpace)); + + int lastRed = 0; + int lastGreen = 0; + int lastBlue = 0; + for (int i = 0; i < 256; ++i) { + QRgb p = testImage.pixel(i, 0); + QVERIFY(qRed(p) >= lastRed); + QVERIFY(qGreen(p) >= lastGreen); + QVERIFY(qBlue(p) >= lastBlue); + lastRed = qRed(p); + lastGreen = qGreen(p); + lastBlue = qBlue(p); + } + + lastRed = 0; + lastGreen = 0; + lastBlue = 0; + testImage.convertToColorSpace(fromColorSpace); + QCOMPARE(testImage.colorSpace(), QColorSpace(fromColorSpace)); + for (int i = 0; i < 256; ++i) { + QRgb p = testImage.pixel(i, 0); + QVERIFY(qAbs(qRed(p) - qGreen(p)) <= tolerance); + QVERIFY(qAbs(qRed(p) - qBlue(p)) <= tolerance); + QVERIFY((lastRed - qRed(p)) <= (tolerance / 2)); + QVERIFY((lastGreen - qGreen(p)) <= (tolerance / 2)); + QVERIFY((lastBlue - qBlue(p)) <= (tolerance / 2)); + lastRed = qRed(p); + lastGreen = qGreen(p); + lastBlue = qBlue(p); + } +} + + +void tst_QColorSpace::loadImage() +{ + QString prefix = QFINDTESTDATA("resources/"); + QImageReader reader(prefix + "ProPhoto.jpg"); + QImage image = reader.read(); + + QVERIFY(!image.isNull()); + QVERIFY(image.colorSpace().isValid()); + QCOMPARE(image.colorSpace().colorSpaceId(), QColorSpace::ProPhotoRgb); + QVERIFY(!image.colorSpace().iccProfile().isEmpty()); + + QColorSpace defaultProPhotoRgb = QColorSpace::ProPhotoRgb; + QVERIFY(!defaultProPhotoRgb.iccProfile().isEmpty()); + + // Test the iccProfile getter returns the ICC profile from the image + // which since we didn't write it, isn't identical to our defaults. + QVERIFY(defaultProPhotoRgb.iccProfile() != image.colorSpace().iccProfile()); + + QColorTransform transform = image.colorSpace().transformationToColorSpace(QColorSpace::SRgb); + qreal maxRed = 0; + qreal maxBlue = 0; + qreal maxRed2 = 0; + qreal maxBlue2 = 0; + for (int y = 0; y < image.height(); ++y) { + for (int x = 0; x < image.width(); ++x) { + QColor p = image.pixelColor(x, y); + maxRed = std::max(maxRed, p.redF()); + maxBlue = std::max(maxBlue, p.blueF()); + p = transform.map(p); + maxRed2 = std::max(maxRed2, p.redF()); + maxBlue2 = std::max(maxBlue2, p.blueF()); + + } + } + // ProPhotoRgb can be a lot more red and blue than SRgb can, so it will have lower values. + QVERIFY(maxRed2 > maxRed); + QVERIFY(maxBlue2 > maxBlue); +} + +void tst_QColorSpace::primaries() +{ + QColor black = QColor::fromRgbF(0.0, 0.0, 0.0); + QColor white = QColor::fromRgbF(1.0, 1.0, 1.0); + QColor red = QColor::fromRgbF(1.0, 0.0, 0.0); + QColor green = QColor::fromRgbF(0.0, 1.0, 0.0); + QColor blue = QColor::fromRgbF(0.0, 0.0, 1.0); + + QColorTransform toAdobeRgb = QColorSpace(QColorSpace::SRgb).transformationToColorSpace(QColorSpace::AdobeRgb); + + QColor tblack = toAdobeRgb.map(black); + QColor twhite = toAdobeRgb.map(white); + QColor tred = toAdobeRgb.map(red); + QColor tgreen = toAdobeRgb.map(green); + QColor tblue = toAdobeRgb.map(blue); + + // Black is black + QCOMPARE(tblack, black); + + // This white hasn't changed + QCOMPARE(twhite, white); + + // Adobe's red and blue gamut corners are the same as sRGB's + // So, a color in the red corner, will stay in the red corner + // the same for blue, but not for green. + QVERIFY(tred.greenF() < 0.001); + QVERIFY(tred.blueF() < 0.001); + QVERIFY(tblue.redF() < 0.001); + QVERIFY(tblue.greenF() < 0.001); + QVERIFY(tgreen.redF() > 0.2); + QVERIFY(tgreen.blueF() > 0.2); +} + +void tst_QColorSpace::primariesXyz() +{ + QColorSpace sRgb = QColorSpace::SRgb; + QColorSpace adobeRgb = QColorSpace::AdobeRgb; + QColorSpace displayP3 = QColorSpace::DisplayP3; + QColorSpace proPhotoRgb = QColorSpace::ProPhotoRgb; + QColorSpace bt2020 = QColorSpace::Bt2020; + + // Check if our calculated matrices, match the precalculated ones. + QCOMPARE(QColorSpacePrivate::get(sRgb)->toXyz, QColorMatrix::toXyzFromSRgb()); + QCOMPARE(QColorSpacePrivate::get(adobeRgb)->toXyz, QColorMatrix::toXyzFromAdobeRgb()); + QCOMPARE(QColorSpacePrivate::get(displayP3)->toXyz, QColorMatrix::toXyzFromDciP3D65()); + QCOMPARE(QColorSpacePrivate::get(proPhotoRgb)->toXyz, QColorMatrix::toXyzFromProPhotoRgb()); + QCOMPARE(QColorSpacePrivate::get(bt2020)->toXyz, QColorMatrix::toXyzFromBt2020()); +} + +void tst_QColorSpace::primaries2_data() +{ + QTest::addColumn<QColorSpace::Primaries>("primariesId"); + + QTest::newRow("sRGB") << QColorSpace::Primaries::SRgb; + QTest::newRow("DCI-P3 (D65)") << QColorSpace::Primaries::DciP3D65; + QTest::newRow("Adobe RGB (1998)") << QColorSpace::Primaries::AdobeRgb; + QTest::newRow("ProPhoto RGB") << QColorSpace::Primaries::ProPhotoRgb; + QTest::newRow("BT.2020") << QColorSpace::Primaries::Bt2020; +} + +void tst_QColorSpace::primaries2() +{ + QFETCH(QColorSpace::Primaries, primariesId); + QColorSpacePrimaries primaries(primariesId); + + QColorSpace original(primariesId, QColorSpace::TransferFunction::Linear); + QColorSpace custom1(primaries.whitePoint, primaries.redPoint, + primaries.greenPoint, primaries.bluePoint, QColorSpace::TransferFunction::Linear); + QCOMPARE(original, custom1); + + // A custom color swizzled color-space: + QColorSpace custom2(primaries.whitePoint, primaries.bluePoint, + primaries.greenPoint, primaries.redPoint, QColorSpace::TransferFunction::Linear); + + QVERIFY(custom1 != custom2); + QColor color1(255, 127, 63); + QColor color2 = custom1.transformationToColorSpace(custom2).map(color1); + QCOMPARE(color2.red(), color1.blue()); + QCOMPARE(color2.green(), color1.green()); + QCOMPARE(color2.blue(), color1.red()); + QCOMPARE(color2.alpha(), color1.alpha()); + QColor color3 = custom2.transformationToColorSpace(custom1).map(color2); + QCOMPARE(color3.red(), color1.red()); + QCOMPARE(color3.green(), color1.green()); + QCOMPARE(color3.blue(), color1.blue()); + QCOMPARE(color3.alpha(), color1.alpha()); +} + +void tst_QColorSpace::invalidPrimaries() +{ + QColorSpace custom(QPointF(), QPointF(), QPointF(), QPointF(), QColorSpace::TransferFunction::Linear); + QVERIFY(!custom.isValid()); + QCOMPARE(custom.colorSpaceId(), QColorSpace::Undefined); +} + +void tst_QColorSpace::changeTransferFunction() +{ + QColorSpace sRgb = QColorSpace::SRgb; + + QColorSpace sRgbLinear = sRgb.withTransferFunction(QColorSpace::TransferFunction::Linear); + QCOMPARE(sRgbLinear.transferFunction(), QColorSpace::TransferFunction::Linear); + QCOMPARE(sRgbLinear.gamma(), 1.0f); + QCOMPARE(sRgbLinear.primaries(), QColorSpace::Primaries::SRgb); + QCOMPARE(sRgbLinear.colorSpaceId(), QColorSpace::SRgbLinear); + QCOMPARE(sRgbLinear, QColorSpace(QColorSpace::SRgbLinear)); + QVERIFY(sRgbLinear != sRgb); + QCOMPARE(sRgbLinear.withTransferFunction(QColorSpace::TransferFunction::SRgb), sRgb); + + QColorSpace aRgb = QColorSpace::AdobeRgb; + aRgb.setTransferFunction(QColorSpace::TransferFunction::SRgb); + QCOMPARE(aRgb.transferFunction(), QColorSpace::TransferFunction::SRgb); + QCOMPARE(aRgb.primaries(), QColorSpace::Primaries::AdobeRgb); + QCOMPARE(aRgb.colorSpaceId(), QColorSpace::Unknown); + QVERIFY(aRgb != QColorSpace(QColorSpace::AdobeRgb)); + QVERIFY(aRgb != sRgb); + QCOMPARE(aRgb.withTransferFunction(QColorSpace::TransferFunction::Gamma, 2.2f), + QColorSpace(QColorSpace::AdobeRgb)); + QVERIFY(aRgb != QColorSpace(QColorSpace::AdobeRgb)); + aRgb.setTransferFunction(QColorSpace::TransferFunction::Gamma, 2.2f); + QVERIFY(aRgb == QColorSpace(QColorSpace::AdobeRgb)); + + QColorSpace undefined; + QCOMPARE(undefined.withTransferFunction(QColorSpace::TransferFunction::Linear), undefined); + undefined.setTransferFunction(QColorSpace::TransferFunction::SRgb); + QCOMPARE(undefined, QColorSpace()); +} + +void tst_QColorSpace::changePrimaries() +{ + QColorSpace cs = QColorSpace::SRgb; + cs.setPrimaries(QColorSpace::Primaries::DciP3D65); + QVERIFY(cs.isValid()); + QCOMPARE(cs, QColorSpace(QColorSpace::DisplayP3)); + cs.setTransferFunction(QColorSpace::TransferFunction::Linear); + cs.setPrimaries(QPointF(0.3127, 0.3290), QPointF(0.640, 0.330), + QPointF(0.3000, 0.6000), QPointF(0.150, 0.060)); + QCOMPARE(cs, QColorSpace(QColorSpace::SRgbLinear)); +} + +QTEST_MAIN(tst_QColorSpace) +#include "tst_qcolorspace.moc" |