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/****************************************************************************
**
** Copyright (C) 2022 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 <QTest>
#include <qcolorspace.h>
#include <qcolortransform.h>
class tst_QColorTransform : public QObject
{
Q_OBJECT
public:
tst_QColorTransform();
private slots:
void mapRGB32_data();
void mapRGB32();
void mapRGB64_data();
void mapRGB64();
void mapQColor_data();
void mapQColor();
void transformIsIdentity();
};
tst_QColorTransform::tst_QColorTransform()
{ }
void tst_QColorTransform::mapRGB32_data()
{
QTest::addColumn<QColorTransform>("transform");
QTest::addColumn<bool>("sharesRed");
QTest::newRow("default") << QColorTransform() << true;
QTest::newRow("sRGB to Linear") << QColorSpace(QColorSpace::SRgb).transformationToColorSpace(QColorSpace::SRgbLinear) << true;
QTest::newRow("AdobeRGB to sRGB") << QColorSpace(QColorSpace::AdobeRgb).transformationToColorSpace(QColorSpace::SRgb) << true;
QTest::newRow("Linear AdobeRGB to Linear sRGB")
<< QColorSpace(QColorSpace::AdobeRgb).withTransferFunction(QColorSpace::TransferFunction::Linear).transformationToColorSpace(
QColorSpace::SRgb)
<< true;
QTest::newRow("sRgb to AdobeRGB") << QColorSpace(QColorSpace::SRgb).transformationToColorSpace(QColorSpace::AdobeRgb) << true;
QTest::newRow("DP3 to sRGB") << QColorSpace(QColorSpace::DisplayP3).transformationToColorSpace(QColorSpace::SRgb) << false;
QTest::newRow("DP3 to Linear DP3")
<< QColorSpace(QColorSpace::DisplayP3).transformationToColorSpace(
QColorSpace(QColorSpace::DisplayP3).withTransferFunction(QColorSpace::TransferFunction::Linear))
<< false;
QTest::newRow("Linear DP3 to Linear sRGB")
<< QColorSpace(QColorSpace::DisplayP3).withTransferFunction(QColorSpace::TransferFunction::Linear).transformationToColorSpace(
QColorSpace::SRgb)
<< false;
}
void tst_QColorTransform::mapRGB32()
{
QFETCH(QColorTransform, transform);
QFETCH(bool, sharesRed);
// Do basic sanity tests of conversions between similar sane color spaces
QRgb testColor = qRgb(32, 64, 128);
QRgb result = transform.map(testColor);
QVERIFY(qRed(result) < qGreen(result));
QVERIFY(qGreen(result) < qBlue(result));
QCOMPARE(qAlpha(result), 255);
if (transform.isIdentity())
QVERIFY(result == testColor);
else
QVERIFY(result != testColor);
testColor = qRgb(128, 64, 32);
result = transform.map(testColor);
QVERIFY(qRed(result) > qGreen(result));
QVERIFY(qGreen(result) > qBlue(result));
QCOMPARE(qAlpha(result), 255);
if (transform.isIdentity())
QVERIFY(result == testColor);
else
QVERIFY(result != testColor);
testColor = qRgba(15, 31, 63, 128);
result = transform.map(testColor);
QVERIFY(qRed(result) < qGreen(result));
QVERIFY(qGreen(result) < qBlue(result));
QCOMPARE(qAlpha(result), 128);
if (transform.isIdentity())
QVERIFY(result == testColor);
else
QVERIFY(result != testColor);
testColor = qRgb(0, 0, 0);
result = transform.map(testColor);
QCOMPARE(qRed(result), 0);
QCOMPARE(qGreen(result), 0);
QCOMPARE(qBlue(result), 0);
QCOMPARE(qAlpha(result), 255);
testColor = qRgb(255, 255, 255);
result = transform.map(testColor);
QCOMPARE(qRed(result), 255);
QCOMPARE(qGreen(result), 255);
QCOMPARE(qBlue(result), 255);
QCOMPARE(qAlpha(result), 255);
testColor = qRgb(255, 255, 0);
result = transform.map(testColor);
QCOMPARE(qAlpha(result), 255);
if (sharesRed)
QCOMPARE(qRed(result), 255);
testColor = qRgb(0, 255, 255);
result = transform.map(testColor);
QCOMPARE(qBlue(result), 255);
QCOMPARE(qAlpha(result), 255);
}
void tst_QColorTransform::mapRGB64_data()
{
mapRGB32_data();
}
void tst_QColorTransform::mapRGB64()
{
QFETCH(QColorTransform, transform);
QFETCH(bool, sharesRed);
QRgba64 testColor = QRgba64::fromRgba(128, 64, 32, 255);
QRgba64 result = transform.map(testColor);
QVERIFY(result.red() > result.green());
QVERIFY(result.green() > result.blue());
QCOMPARE(result.alpha(), 0xffff);
if (transform.isIdentity())
QVERIFY(result == testColor);
else
QVERIFY(result != testColor);
testColor = QRgba64::fromRgba64(0, 0, 0, 0xffff);
result = transform.map(testColor);
QCOMPARE(result, testColor);
testColor = QRgba64::fromRgba64(0xffff, 0xffff, 0xffff, 0xffff);
result = transform.map(testColor);
QCOMPARE(result, testColor);
testColor = QRgba64::fromRgba64(0xffff, 0xffff, 0, 0xffff);
result = transform.map(testColor);
QCOMPARE(result.alpha(), 0xffff);
if (sharesRed)
QCOMPARE(result.red(), 0xffff);
testColor = QRgba64::fromRgba64(0, 0xffff, 0xffff, 0xffff);
result = transform.map(testColor);
QCOMPARE(result.blue(), 0xffff);
QCOMPARE(result.alpha(), 0xffff);
}
void tst_QColorTransform::mapQColor_data()
{
mapRGB32_data();
}
void tst_QColorTransform::mapQColor()
{
QFETCH(QColorTransform, transform);
QFETCH(bool, sharesRed);
QColor testColor(32, 64, 128);
QColor result = transform.map(testColor);
QVERIFY(result.redF() < result.greenF());
QVERIFY(result.greenF() < result.blueF());
QCOMPARE(result.alphaF(), 1.0f);
if (transform.isIdentity())
QVERIFY(result == testColor);
else
QVERIFY(result != testColor);
testColor = Qt::black;
result = transform.map(testColor);
QCOMPARE(result, testColor);
testColor = Qt::white;
result = transform.map(testColor);
QCOMPARE(result, testColor);
testColor = QColor(255, 255, 0);
result = transform.map(testColor);
QCOMPARE(result.alphaF(), 1);
if (sharesRed)
QVERIFY(result.redF() >= 1.0f);
testColor = QColor(0, 255, 255);
result = transform.map(testColor);
QCOMPARE(result.alphaF(), 1.0f);
QVERIFY(result.blueF() >= 1.0f);
}
void tst_QColorTransform::transformIsIdentity()
{
QColorTransform ct;
QVERIFY(ct.isIdentity());
QColorSpace cs = QColorSpace::SRgb;
ct = cs.transformationToColorSpace(QColorSpace::SRgb);
QVERIFY(ct.isIdentity());
ct = cs.transformationToColorSpace(QColorSpace::SRgbLinear);
QVERIFY(!ct.isIdentity());
ct = cs.withTransferFunction(QColorSpace::TransferFunction::Linear).transformationToColorSpace(QColorSpace::SRgbLinear);
QVERIFY(ct.isIdentity());
}
QTEST_MAIN(tst_QColorTransform)
#include "tst_qcolortransform.moc"
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