tools/qa/cppunit/test_color.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  */
   9
  10 #include <sal/types.h>
  11 #include <cppunit/TestAssert.h>
  12 #include <cppunit/TestFixture.h>
  13 #include <cppunit/extensions/HelperMacros.h>
  14 #include <tools/color.hxx>
  15
  16 namespace
  17 {
  18
  19 class Test: public CppUnit::TestFixture
  20 {
  21 public:
  22     void testVariables();
  23     void test_asRGBColor();
  24     void test_ApplyTintOrShade();
  25     void test_ApplyLumModOff();
  26     void testGetColorError();
  27     void testInvert();
  28     void testBColor();
  29     void testLuminance();
  30
  31     CPPUNIT_TEST_SUITE(Test);
  32     CPPUNIT_TEST(testVariables);
  33     CPPUNIT_TEST(test_asRGBColor);
  34     CPPUNIT_TEST(test_ApplyTintOrShade);
  35     CPPUNIT_TEST(test_ApplyLumModOff);
  36     CPPUNIT_TEST(testGetColorError);
  37     CPPUNIT_TEST(testInvert);
  38     CPPUNIT_TEST(testBColor);
  39     CPPUNIT_TEST(testLuminance);
  40     CPPUNIT_TEST_SUITE_END();
  41 };
  42
  43 void Test::testVariables()
  44 {
  45     Color aColor(0x44, 0x88, 0xAA);
  46     CPPUNIT_ASSERT_EQUAL(int(0x00), int(255 - aColor.GetAlpha()));
  47     CPPUNIT_ASSERT_EQUAL(int(0x44), int(aColor.GetRed()));
  48     CPPUNIT_ASSERT_EQUAL(int(0x88), int(aColor.GetGreen()));
  49     CPPUNIT_ASSERT_EQUAL(int(0xAA), int(aColor.GetBlue()));
  50     CPPUNIT_ASSERT_EQUAL(sal_uInt32(0x004488AA), sal_uInt32(aColor));
  51
  52     aColor = Color(ColorTransparency, 0xAABBCCDD);
  53     CPPUNIT_ASSERT_EQUAL(int(0xAA), int(255 - aColor.GetAlpha()));
  54     CPPUNIT_ASSERT_EQUAL(int(0xBB), int(aColor.GetRed()));
  55     CPPUNIT_ASSERT_EQUAL(int(0xCC), int(aColor.GetGreen()));
  56     CPPUNIT_ASSERT_EQUAL(int(0xDD), int(aColor.GetBlue()));
  57
  58     aColor.SetAlpha(255 - 0x11);
  59     CPPUNIT_ASSERT_EQUAL(sal_uInt32(0x11BBCCDD), sal_uInt32(aColor));
  60
  61     aColor.SetRed(0x22);
  62     CPPUNIT_ASSERT_EQUAL(sal_uInt32(0x1122CCDD), sal_uInt32(aColor));
  63
  64     aColor.SetGreen(0x33);
  65     CPPUNIT_ASSERT_EQUAL(sal_uInt32(0x112233DD), sal_uInt32(aColor));
  66
  67     aColor.SetBlue(0x44);
  68     CPPUNIT_ASSERT_EQUAL(sal_uInt32(0x11223344), sal_uInt32(aColor));
  69
  70     aColor.SetAlpha(255 - 0x77);
  71     CPPUNIT_ASSERT_EQUAL(sal_uInt32(0x77223344), sal_uInt32(aColor));
  72
  73     aColor.SetRed(0x88);
  74     CPPUNIT_ASSERT_EQUAL(sal_uInt32(0x77883344), sal_uInt32(aColor));
  75
  76     aColor.SetGreen(0x99);
  77     CPPUNIT_ASSERT_EQUAL(sal_uInt32(0x77889944), sal_uInt32(aColor));
  78
  79     aColor.SetBlue(0xAA);
  80     CPPUNIT_ASSERT_EQUAL(sal_uInt32(0x778899AA), sal_uInt32(aColor));
  81 }
  82
  83 void Test::test_asRGBColor()
  84 {
  85     Color aColor;
  86     aColor = COL_BLACK;
  87     CPPUNIT_ASSERT_EQUAL(u"000000"_ustr, aColor.AsRGBHexString());
  88
  89     aColor = COL_WHITE;
  90     CPPUNIT_ASSERT_EQUAL(u"ffffff"_ustr, aColor.AsRGBHexString());
  91
  92     aColor = COL_RED;
  93     CPPUNIT_ASSERT_EQUAL(u"800000"_ustr, aColor.AsRGBHexString());
  94
  95     aColor = COL_TRANSPARENT;
  96     CPPUNIT_ASSERT_EQUAL(u"ffffff"_ustr, aColor.AsRGBHexString());
  97
  98     aColor = COL_BLUE;
  99     CPPUNIT_ASSERT_EQUAL(u"000080"_ustr, aColor.AsRGBHexString());
 100
 101     aColor.SetRed(0x12);
 102     aColor.SetGreen(0x34);
 103     aColor.SetBlue(0x56);
 104     CPPUNIT_ASSERT_EQUAL(u"123456"_ustr, aColor.AsRGBHexString());
 105
 106     aColor = COL_AUTO;
 107     CPPUNIT_ASSERT_EQUAL(u"ffffff"_ustr, aColor.AsRGBHexString());
 108 }
 109
 110 OUString createTintShade(sal_uInt8 nR, sal_uInt8 nG, sal_uInt8 nB, std::u16string_view sReference, sal_Int16 nTintShade)
 111 {
 112     Color aColor(nR, nG, nB);
 113     if (sReference != aColor.AsRGBHexString())
 114         return OUString();
 115     aColor.ApplyTintOrShade(nTintShade);
 116     return aColor.AsRGBHexString();
 117 }
 118
 119 void Test::test_ApplyTintOrShade()
 120 {
 121     // BLACK reference
 122
 123     // 5% tint
 124     CPPUNIT_ASSERT_EQUAL(u"0d0d0d"_ustr, createTintShade(0x00, 0x00, 0x00, u"000000",  500));
 125     // 15% tint
 126     CPPUNIT_ASSERT_EQUAL(u"262626"_ustr, createTintShade(0x00, 0x00, 0x00, u"000000",  1500));
 127     // 25% tint
 128     CPPUNIT_ASSERT_EQUAL(u"404040"_ustr, createTintShade(0x00, 0x00, 0x00, u"000000",  2500));
 129     // 50% tint
 130     CPPUNIT_ASSERT_EQUAL(u"808080"_ustr, createTintShade(0x00, 0x00, 0x00, u"000000",  5000));
 131     // 100% tint
 132     CPPUNIT_ASSERT_EQUAL(u"ffffff"_ustr, createTintShade(0x00, 0x00, 0x00, u"000000", 10000));
 133
 134     // WHITE reference
 135
 136     // 5% shade
 137     CPPUNIT_ASSERT_EQUAL(u"f2f2f2"_ustr, createTintShade(0xff, 0xff, 0xff, u"ffffff",   -500));
 138     // 15% shade
 139     CPPUNIT_ASSERT_EQUAL(u"d9d9d9"_ustr, createTintShade(0xff, 0xff, 0xff, u"ffffff",  -1500));
 140     // 25% shade
 141     CPPUNIT_ASSERT_EQUAL(u"bfbfbf"_ustr, createTintShade(0xff, 0xff, 0xff, u"ffffff",  -2500));
 142     // 50% shade
 143     CPPUNIT_ASSERT_EQUAL(u"808080"_ustr, createTintShade(0xff, 0xff, 0xff, u"ffffff",  -5000));
 144     // 100% shade
 145     CPPUNIT_ASSERT_EQUAL(u"000000"_ustr, createTintShade(0xff, 0xff, 0xff, u"ffffff", -10000));
 146
 147     // GREY reference
 148
 149     // 0% - no change
 150     CPPUNIT_ASSERT_EQUAL(u"808080"_ustr, createTintShade(0x80, 0x80, 0x80, u"808080",      0));
 151
 152     // 25% tint
 153     CPPUNIT_ASSERT_EQUAL(u"a0a0a0"_ustr, createTintShade(0x80, 0x80, 0x80, u"808080",   2500));
 154     // 50% tint
 155     //CPPUNIT_ASSERT_EQUAL(OUString("c0c0c0"), createTintShade(0x80, 0x80, 0x80, "808080",   5000));
 156     // disable for now - a rounding error happens on come platforms...
 157     // 100% tint
 158     CPPUNIT_ASSERT_EQUAL(u"ffffff"_ustr, createTintShade(0x80, 0x80, 0x80, u"808080",  10000));
 159
 160     // 25% shade
 161     CPPUNIT_ASSERT_EQUAL(u"606060"_ustr, createTintShade(0x80, 0x80, 0x80, u"808080",  -2500));
 162     // 50% shade
 163     CPPUNIT_ASSERT_EQUAL(u"404040"_ustr, createTintShade(0x80, 0x80, 0x80, u"808080",  -5000));
 164     // 100% shade
 165     CPPUNIT_ASSERT_EQUAL(u"000000"_ustr, createTintShade(0x80, 0x80, 0x80, u"808080", -10000));
 166 }
 167
 168 void Test::test_ApplyLumModOff()
 169 {
 170     // Kind of blue.
 171     Color aColor(0x44, 0x72, 0xC4);
 172
 173     // PowerPoint calls this "Lighter 40%".
 174     aColor.ApplyLumModOff(6000, 4000);
 175
 176     CPPUNIT_ASSERT_EQUAL(u"8faadc"_ustr, aColor.AsRGBHexString());
 177 }
 178
 179 void Test::testGetColorError()
 180 {
 181     CPPUNIT_ASSERT_EQUAL(sal_uInt16(0), Color(0xAA, 0xBB, 0xCC).GetColorError(Color(0xAA, 0xBB, 0xCC)));
 182
 183     CPPUNIT_ASSERT_EQUAL(sal_uInt16(1), Color(0xA0, 0xB0, 0xC0).GetColorError(Color(0xA1, 0xB0, 0xC0)));
 184     CPPUNIT_ASSERT_EQUAL(sal_uInt16(1), Color(0xA0, 0xB0, 0xC0).GetColorError(Color(0xA0, 0xB1, 0xC0)));
 185     CPPUNIT_ASSERT_EQUAL(sal_uInt16(1), Color(0xA0, 0xB0, 0xC0).GetColorError(Color(0xA0, 0xB0, 0xC1)));
 186
 187     CPPUNIT_ASSERT_EQUAL(sal_uInt16(2), Color(0xA0, 0xB0, 0xC0).GetColorError(Color(0xA1, 0xB1, 0xC0)));
 188     CPPUNIT_ASSERT_EQUAL(sal_uInt16(2), Color(0xA0, 0xB0, 0xC0).GetColorError(Color(0xA0, 0xB1, 0xC1)));
 189     CPPUNIT_ASSERT_EQUAL(sal_uInt16(2), Color(0xA0, 0xB0, 0xC0).GetColorError(Color(0xA1, 0xB0, 0xC1)));
 190
 191     CPPUNIT_ASSERT_EQUAL(sal_uInt16(3), Color(0xA0, 0xB0, 0xC0).GetColorError(Color(0xA1, 0xB1, 0xC1)));
 192     CPPUNIT_ASSERT_EQUAL(sal_uInt16(3), Color(0xA0, 0xB0, 0xC0).GetColorError(Color(0xA1, 0xB1, 0xC1)));
 193     CPPUNIT_ASSERT_EQUAL(sal_uInt16(3), Color(0xA0, 0xB0, 0xC0).GetColorError(Color(0xA1, 0xB1, 0xC1)));
 194 }
 195
 196 void Test::testInvert()
 197 {
 198     Color aColor(0xFF, 0x00, 0x88);
 199     aColor.Invert();
 200     CPPUNIT_ASSERT_EQUAL(Color(0x00, 0xFF, 0x77).AsRGBHexString(), aColor.AsRGBHexString());
 201
 202     // Alpha should be unaffected
 203     aColor = Color(ColorTransparency, 0x22, 0xFF, 0x00, 0x88);
 204     aColor.Invert();
 205     CPPUNIT_ASSERT_EQUAL(Color(ColorTransparency, 0x22, 0x00, 0xFF, 0x77).AsRGBHexString(), aColor.AsRGBHexString());
 206 }
 207
 208 void Test::testBColor()
 209 {
 210     Color aColor;
 211
 212     aColor = Color(basegfx::BColor(0.0, 0.0, 0.0));
 213
 214     CPPUNIT_ASSERT_EQUAL(Color(0x00, 0x00, 0x00).AsRGBHexString(), aColor.AsRGBHexString());
 215     CPPUNIT_ASSERT_EQUAL(0.0, aColor.getBColor().getRed());
 216     CPPUNIT_ASSERT_EQUAL(0.0, aColor.getBColor().getGreen());
 217     CPPUNIT_ASSERT_EQUAL(0.0, aColor.getBColor().getBlue());
 218
 219     aColor = Color(basegfx::BColor(1.0, 1.0, 1.0));
 220
 221     CPPUNIT_ASSERT_EQUAL(Color(0xFF, 0xFF, 0xFF).AsRGBHexString(), aColor.AsRGBHexString());
 222     CPPUNIT_ASSERT_EQUAL(1.0, aColor.getBColor().getRed());
 223     CPPUNIT_ASSERT_EQUAL(1.0, aColor.getBColor().getGreen());
 224     CPPUNIT_ASSERT_EQUAL(1.0, aColor.getBColor().getBlue());
 225
 226     aColor = Color(basegfx::BColor(0.5, 0.25, 0.125));
 227
 228     CPPUNIT_ASSERT_EQUAL(Color(0x80, 0x40, 0x20).AsRGBHexString(), aColor.AsRGBHexString());
 229     // FP error is rather big, but that's normal
 230     CPPUNIT_ASSERT_DOUBLES_EQUAL(0.500, aColor.getBColor().getRed(), 1E-2);
 231     CPPUNIT_ASSERT_DOUBLES_EQUAL(0.250, aColor.getBColor().getGreen(), 1E-2);
 232     CPPUNIT_ASSERT_DOUBLES_EQUAL(0.125, aColor.getBColor().getBlue(), 1E-2);
 233
 234 }
 235
 236 void Test::testLuminance()
 237 {
 238     CPPUNIT_ASSERT_EQUAL(sal_uInt8(0), COL_BLACK.GetLuminance());
 239     CPPUNIT_ASSERT_EQUAL(sal_uInt8(255), COL_WHITE.GetLuminance());
 240     CPPUNIT_ASSERT_EQUAL(sal_uInt8(128), Color(128, 128, 128).GetLuminance());
 241     CPPUNIT_ASSERT(COL_WHITE.IsBright());
 242     CPPUNIT_ASSERT(COL_BLACK.IsDark());
 243     CPPUNIT_ASSERT(Color(249, 250, 251).IsBright());
 244     CPPUNIT_ASSERT(Color(9, 10, 11).IsDark());
 245     CPPUNIT_ASSERT(COL_WHITE.GetLuminance() > COL_BLACK.GetLuminance());
 246 }
 247
 248 CPPUNIT_TEST_SUITE_REGISTRATION(Test);
 249
 250 }
 251
 252 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */