/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ /* * This file is part of the Collabora Office project. * * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. * * This file incorporates work covered by the following license notice: * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed * with this work for additional information regarding copyright * ownership. The ASF licenses this file to you under the Apache * License, Version 2.0 (the "License"); you may not use this file * except in compliance with the License. You may obtain a copy of * the License at http://www.apache.org/licenses/LICENSE-2.0 . */ #include #include #include #include #include namespace basegfx { class bcolor : public CppUnit::TestFixture { BColor maWhite; BColor maBlack; BColor maRed; BColor maGreen; BColor maBlue; BColor maYellow; BColor maMagenta; BColor maCyan; public: bcolor() : maWhite(1, 1, 1) , maBlack(0, 0, 0) , maRed(1, 0, 0) , maGreen(0, 1, 0) , maBlue(0, 0, 1) , maYellow(1, 1, 0) , maMagenta(1, 0, 1) , maCyan(0, 1, 1) { } // insert your test code here. void hslTest() { CPPUNIT_ASSERT_EQUAL_MESSAGE("white", BColor(0, 0, 1), utils::rgb2hsl(maWhite)); CPPUNIT_ASSERT_EQUAL_MESSAGE("black", BColor(0, 0, 0), utils::rgb2hsl(maBlack)); CPPUNIT_ASSERT_EQUAL_MESSAGE("red", BColor(0, 1, 0.5), utils::rgb2hsl(maRed)); CPPUNIT_ASSERT_EQUAL_MESSAGE("green", BColor(120, 1, 0.5), utils::rgb2hsl(maGreen)); CPPUNIT_ASSERT_EQUAL_MESSAGE("blue", BColor(240, 1, 0.5), utils::rgb2hsl(maBlue)); CPPUNIT_ASSERT_EQUAL_MESSAGE("yellow", BColor(60, 1, 0.5), utils::rgb2hsl(maYellow)); CPPUNIT_ASSERT_EQUAL_MESSAGE("magenta", BColor(300, 1, 0.5), utils::rgb2hsl(maMagenta)); CPPUNIT_ASSERT_EQUAL_MESSAGE("cyan", BColor(180, 1, 0.5), utils::rgb2hsl(maCyan)); CPPUNIT_ASSERT_EQUAL_MESSAGE("third hue case", BColor(210, 1, 0.5), utils::rgb2hsl(BColor(0, 0.5, 1))); CPPUNIT_ASSERT_EQUAL_MESSAGE("roundtrip white", maWhite, utils::hsl2rgb(utils::rgb2hsl(maWhite))); CPPUNIT_ASSERT_EQUAL_MESSAGE("roundtrip black", maBlack, utils::hsl2rgb(utils::rgb2hsl(maBlack))); CPPUNIT_ASSERT_EQUAL_MESSAGE("roundtrip red", maRed, utils::hsl2rgb(utils::rgb2hsl(maRed))); CPPUNIT_ASSERT_EQUAL_MESSAGE("roundtrip green", maGreen, utils::hsl2rgb(utils::rgb2hsl(maGreen))); CPPUNIT_ASSERT_EQUAL_MESSAGE("roundtrip blue", maBlue, utils::hsl2rgb(utils::rgb2hsl(maBlue))); CPPUNIT_ASSERT_EQUAL_MESSAGE("roundtrip yellow", maYellow, utils::hsl2rgb(utils::rgb2hsl(maYellow))); CPPUNIT_ASSERT_EQUAL_MESSAGE("roundtrip magenta", maMagenta, utils::hsl2rgb(utils::rgb2hsl(maMagenta))); CPPUNIT_ASSERT_EQUAL_MESSAGE("roundtrip cyan", maCyan, utils::hsl2rgb(utils::rgb2hsl(maCyan))); CPPUNIT_ASSERT_EQUAL_MESSAGE("grey10", BColor(0, 0, .1), utils::rgb2hsl(maWhite * .1)); CPPUNIT_ASSERT_EQUAL_MESSAGE("grey90", BColor(0, 0, .9), utils::rgb2hsl(maWhite * .9)); CPPUNIT_ASSERT_EQUAL_MESSAGE("red/2", BColor(0, 1, 0.25), utils::rgb2hsl(maRed * .5)); CPPUNIT_ASSERT_EQUAL_MESSAGE("green/2", BColor(120, 1, 0.25), utils::rgb2hsl(maGreen * .5)); CPPUNIT_ASSERT_EQUAL_MESSAGE("blue/2", BColor(240, 1, 0.25), utils::rgb2hsl(maBlue * .5)); CPPUNIT_ASSERT_EQUAL_MESSAGE("yellow/2", BColor(60, 1, 0.25), utils::rgb2hsl(maYellow * .5)); CPPUNIT_ASSERT_EQUAL_MESSAGE("magenta/2", BColor(300, 1, 0.25), utils::rgb2hsl(maMagenta * .5)); CPPUNIT_ASSERT_EQUAL_MESSAGE("cyan/2", BColor(180, 1, 0.25), utils::rgb2hsl(maCyan * .5)); CPPUNIT_ASSERT_EQUAL_MESSAGE("pastel", BColor(0, .5, .5), utils::rgb2hsl(BColor(.75, .25, .25))); } // insert your test code here. void hsvTest() { CPPUNIT_ASSERT_EQUAL_MESSAGE("white", BColor(0, 0, 1), utils::rgb2hsv(maWhite)); CPPUNIT_ASSERT_EQUAL_MESSAGE("black", BColor(0, 0, 0), utils::rgb2hsv(maBlack)); CPPUNIT_ASSERT_EQUAL_MESSAGE("red", BColor(0, 1, 1), utils::rgb2hsv(maRed)); CPPUNIT_ASSERT_EQUAL_MESSAGE("green", BColor(120, 1, 1), utils::rgb2hsv(maGreen)); CPPUNIT_ASSERT_EQUAL_MESSAGE("blue", BColor(240, 1, 1), utils::rgb2hsv(maBlue)); CPPUNIT_ASSERT_EQUAL_MESSAGE("yellow", BColor(60, 1, 1), utils::rgb2hsv(maYellow)); CPPUNIT_ASSERT_EQUAL_MESSAGE("magenta", BColor(300, 1, 1), utils::rgb2hsv(maMagenta)); CPPUNIT_ASSERT_EQUAL_MESSAGE("cyan", BColor(180, 1, 1), utils::rgb2hsv(maCyan)); CPPUNIT_ASSERT_EQUAL_MESSAGE("roundtrip white", maWhite, utils::hsv2rgb(utils::rgb2hsv(maWhite))); CPPUNIT_ASSERT_EQUAL_MESSAGE("roundtrip black", maBlack, utils::hsv2rgb(utils::rgb2hsv(maBlack))); CPPUNIT_ASSERT_EQUAL_MESSAGE("roundtrip red", maRed, utils::hsv2rgb(utils::rgb2hsv(maRed))); CPPUNIT_ASSERT_EQUAL_MESSAGE("roundtrip green", maGreen, utils::hsv2rgb(utils::rgb2hsv(maGreen))); CPPUNIT_ASSERT_EQUAL_MESSAGE("roundtrip blue", maBlue, utils::hsv2rgb(utils::rgb2hsv(maBlue))); CPPUNIT_ASSERT_EQUAL_MESSAGE("roundtrip yellow", maYellow, utils::hsv2rgb(utils::rgb2hsv(maYellow))); CPPUNIT_ASSERT_EQUAL_MESSAGE("roundtrip magenta", maMagenta, utils::hsv2rgb(utils::rgb2hsv(maMagenta))); CPPUNIT_ASSERT_EQUAL_MESSAGE("roundtrip cyan", maCyan, utils::hsv2rgb(utils::rgb2hsv(maCyan))); CPPUNIT_ASSERT_EQUAL_MESSAGE("grey10", BColor(0, 0, .1), utils::rgb2hsv(maWhite * .1)); CPPUNIT_ASSERT_EQUAL_MESSAGE("grey90", BColor(0, 0, .9), utils::rgb2hsv(maWhite * .9)); CPPUNIT_ASSERT_EQUAL_MESSAGE("red/2", BColor(0, 1, 0.5), utils::rgb2hsv(maRed * .5)); CPPUNIT_ASSERT_EQUAL_MESSAGE("green/2", BColor(120, 1, 0.5), utils::rgb2hsv(maGreen * .5)); CPPUNIT_ASSERT_EQUAL_MESSAGE("blue/2", BColor(240, 1, 0.5), utils::rgb2hsv(maBlue * .5)); CPPUNIT_ASSERT_EQUAL_MESSAGE("yellow/2", BColor(60, 1, 0.5), utils::rgb2hsv(maYellow * .5)); CPPUNIT_ASSERT_EQUAL_MESSAGE("magenta/2", BColor(300, 1, 0.5), utils::rgb2hsv(maMagenta * .5)); CPPUNIT_ASSERT_EQUAL_MESSAGE("cyan/2", BColor(180, 1, 0.5), utils::rgb2hsv(maCyan * .5)); CPPUNIT_ASSERT_EQUAL_MESSAGE("pastel", BColor(0, .5, .5), utils::rgb2hsv(BColor(.5, .25, .25))); } void linearRGBTest() { double tolerance = 1e-6; BColor srgbMid(0.5, 0.5, 0.5); BColor linearMid = utils::convertSRGBToLinearRGB(srgbMid); double expectedMid = std::pow((0.5 + 0.055) / 1.055, 2.4); CPPUNIT_ASSERT_DOUBLES_EQUAL_MESSAGE("sRGB to linear", expectedMid, linearMid.getRed(), tolerance); BColor srgbBack = utils::convertLinearRGBToSRGB(linearMid); CPPUNIT_ASSERT_DOUBLES_EQUAL_MESSAGE("linear to sRGB roundtrip", 0.5, srgbBack.getRed(), tolerance); BColor srgbLow(0.04, 0.04, 0.04); BColor linearLow = utils::convertSRGBToLinearRGB(srgbLow); double expectedLow = 0.04 / 12.92; CPPUNIT_ASSERT_DOUBLES_EQUAL_MESSAGE("sRGB to linear", expectedLow, linearLow.getRed(), tolerance); BColor srgbHigh(0.8, 0.8, 0.8); BColor linearHigh = utils::convertSRGBToLinearRGB(srgbHigh); double expectedHigh = std::pow((0.8 + 0.055) / 1.055, 2.4); CPPUNIT_ASSERT_DOUBLES_EQUAL_MESSAGE("sRGB to linear", expectedHigh, linearHigh.getRed(), tolerance); BColor testColors[] = { BColor(0.0, 0.0, 0.0), BColor(0.2, 0.2, 0.2), BColor(0.5, 0.5, 0.5), BColor(0.8, 0.8, 0.8), BColor(1.0, 1.0, 1.0) }; for (const auto& color : testColors) { BColor roundtrip = utils::convertLinearRGBToSRGB(utils::convertSRGBToLinearRGB(color)); for (int i = 0; i < 3; i++) { double tol = (color[i] < 0.04045) ? 1e-4 : 1e-3; if (color[i] == 0.0) tol = 1e-6; if (color[i] == 1.0) tol = 1e-3; CPPUNIT_ASSERT_DOUBLES_EQUAL_MESSAGE("sRGB -> linear -> sRGB roundtrip", color[i], roundtrip[i], tol); } } } void getLightVariantTest() { double tolerance = 1e-6; std::vector darkColors = { BColor(0.0, 0.0, 0.0), BColor(0.1, 0.1, 0.1), BColor(0.2, 0.1, 0.1), BColor(0.0, 0.0, 0.5), BColor(0.3, 0.1, 0.2) }; for (const auto& color : darkColors) { BColor light = utils::getLightVariant(color); double luminance = light.getWCAGLuminance(); bool inRange = luminance >= (0.5 - tolerance) && luminance <= (1.0 + tolerance); std::ostringstream msg; msg << "Dark color should have luminance in [0.5, 1], got " << luminance; CPPUNIT_ASSERT_MESSAGE(msg.str(), inRange); } std::vector lightColors = { BColor(0.9, 0.9, 0.9), BColor(1.0, 1.0, 1.0), BColor(0.8, 0.8, 0.7), BColor(0.7, 0.8, 0.9) }; for (const auto& color : lightColors) { BColor light = utils::getLightVariant(color); double luminance = light.getWCAGLuminance(); bool inRange = luminance >= (0.5 - tolerance) && luminance <= (1.0 + tolerance); std::ostringstream msg; msg << "Light color should have luminance in [0.5, 1], got " << luminance; CPPUNIT_ASSERT_MESSAGE(msg.str(), inRange); } std::vector outOfRangeColors = { BColor(-0.5, 0.5, 0.5), BColor(0.5, -0.5, 0.5), BColor(0.5, 0.5, -0.5), BColor(1.5, 0.5, 0.5), BColor(0.5, 1.5, 0.5), BColor(0.5, 0.5, 1.5), BColor(-1.0, -1.0, -1.0), BColor(2.0, 2.0, 2.0), BColor(-0.3, 1.2, -0.7) }; for (const auto& color : outOfRangeColors) { BColor light = utils::getLightVariant(color); double luminance = light.getWCAGLuminance(); bool inRange = luminance >= (0.5 - tolerance) && luminance <= (1.0 + tolerance); bool channelsValid = light.getRed() >= 0.0 && light.getRed() <= 1.0 && light.getGreen() >= 0.0 && light.getGreen() <= 1.0 && light.getBlue() >= 0.0 && light.getBlue() <= 1.0; std::ostringstream msg; msg << "Out-of-range color should have luminance in [0.5, 1], got " << luminance; CPPUNIT_ASSERT_MESSAGE(msg.str(), inRange); CPPUNIT_ASSERT_MESSAGE("Out-of-range color output should have channels in [0, 1]", channelsValid); } std::vector trivialColors = { BColor(0.0, 0.0, 0.0), BColor(1.0, 1.0, 1.0), BColor(0.5, 0.5, 0.5) }; for (const auto& color : trivialColors) { BColor light = utils::getLightVariant(color); double luminance = light.getWCAGLuminance(); bool inRange = luminance >= (0.5 - tolerance) && luminance <= (1.0 + tolerance); bool channelsValid = light.getRed() >= 0.0 && light.getRed() <= 1.0 && light.getGreen() >= 0.0 && light.getGreen() <= 1.0 && light.getBlue() >= 0.0 && light.getBlue() <= 1.0; std::ostringstream msg; msg << "Trivial color should have luminance in [0.5, 1], got " << luminance; CPPUNIT_ASSERT_MESSAGE(msg.str(), inRange); CPPUNIT_ASSERT_MESSAGE("Trivial color output should have channels in [0, 1]", channelsValid); } } CPPUNIT_TEST_SUITE(bcolor); CPPUNIT_TEST(hslTest); CPPUNIT_TEST(hsvTest); CPPUNIT_TEST(linearRGBTest); CPPUNIT_TEST(getLightVariantTest); CPPUNIT_TEST_SUITE_END(); }; } // namespace basegfx CPPUNIT_TEST_SUITE_REGISTRATION(basegfx::bcolor); /* vim:set shiftwidth=4 softtabstop=4 expandtab: */