1 // Copyright 2014 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "config.h" 6 #include "platform/fonts/GlyphBuffer.h" 7 8 #include "platform/fonts/SimpleFontData.h" 9 #include "wtf/PassRefPtr.h" 10 #include "wtf/RefPtr.h" 11 #include <gtest/gtest.h> 12 13 using namespace blink; 14 15 namespace { 16 17 // Minimal TestSimpleFontData implementation. 18 // Font has no glyphs, but that's okay. 19 class TestSimpleFontData : public SimpleFontData { 20 public: 21 static PassRefPtr<TestSimpleFontData> create() 22 { 23 return adoptRef(new TestSimpleFontData); 24 } 25 26 private: 27 TestSimpleFontData() : SimpleFontData(nullptr, 10, false, false) { } 28 29 bool fillGlyphPage(GlyphPage* pageToFill, unsigned offset, unsigned length, UChar* buffer, unsigned bufferLength) const OVERRIDE 30 { 31 return false; 32 } 33 }; 34 35 TEST(GlyphBufferTest, StartsEmpty) 36 { 37 GlyphBuffer glyphBuffer; 38 EXPECT_TRUE(glyphBuffer.isEmpty()); 39 EXPECT_EQ(0u, glyphBuffer.size()); 40 } 41 42 TEST(GlyphBufferTest, StoresGlyphs) 43 { 44 RefPtr<SimpleFontData> font1 = TestSimpleFontData::create(); 45 RefPtr<SimpleFontData> font2 = TestSimpleFontData::create(); 46 47 GlyphBuffer glyphBuffer; 48 glyphBuffer.add(42, font1.get(), 10); 49 glyphBuffer.add(43, font1.get(), 15); 50 glyphBuffer.add(44, font2.get(), FloatSize(12, 2)); 51 52 EXPECT_FALSE(glyphBuffer.isEmpty()); 53 EXPECT_EQ(3u, glyphBuffer.size()); 54 55 EXPECT_EQ(42, glyphBuffer.glyphAt(0)); 56 EXPECT_EQ(43, glyphBuffer.glyphAt(1)); 57 EXPECT_EQ(44, glyphBuffer.glyphAt(2)); 58 59 const Glyph* glyphs = glyphBuffer.glyphs(0); 60 EXPECT_EQ(42, glyphs[0]); 61 EXPECT_EQ(43, glyphs[1]); 62 EXPECT_EQ(44, glyphs[2]); 63 } 64 65 TEST(GlyphBufferTest, StoresAdvances) 66 { 67 RefPtr<SimpleFontData> font1 = TestSimpleFontData::create(); 68 RefPtr<SimpleFontData> font2 = TestSimpleFontData::create(); 69 70 GlyphBuffer glyphBuffer; 71 glyphBuffer.add(42, font1.get(), 10); 72 glyphBuffer.add(43, font1.get(), 15); 73 glyphBuffer.add(44, font2.get(), FloatSize(12, 2)); 74 75 EXPECT_FALSE(glyphBuffer.isEmpty()); 76 EXPECT_EQ(3u, glyphBuffer.size()); 77 78 EXPECT_EQ(FloatSize(10, 0), glyphBuffer.advanceAt(0)); 79 EXPECT_EQ(FloatSize(15, 0), glyphBuffer.advanceAt(1)); 80 EXPECT_EQ(FloatSize(12, 2), glyphBuffer.advanceAt(2)); 81 82 const FloatSize* advances = glyphBuffer.advances(0); 83 EXPECT_EQ(FloatSize(10, 0), advances[0]); 84 EXPECT_EQ(FloatSize(15, 0), advances[1]); 85 EXPECT_EQ(FloatSize(12, 2), advances[2]); 86 } 87 88 TEST(GlyphBufferTest, StoresSimpleFontData) 89 { 90 RefPtr<SimpleFontData> font1 = TestSimpleFontData::create(); 91 RefPtr<SimpleFontData> font2 = TestSimpleFontData::create(); 92 93 GlyphBuffer glyphBuffer; 94 glyphBuffer.add(42, font1.get(), 10); 95 glyphBuffer.add(43, font1.get(), 15); 96 glyphBuffer.add(44, font2.get(), FloatSize(12, 2)); 97 98 EXPECT_FALSE(glyphBuffer.isEmpty()); 99 EXPECT_EQ(3u, glyphBuffer.size()); 100 101 EXPECT_EQ(font1.get(), glyphBuffer.fontDataAt(0)); 102 EXPECT_EQ(font1.get(), glyphBuffer.fontDataAt(1)); 103 EXPECT_EQ(font2.get(), glyphBuffer.fontDataAt(2)); 104 } 105 106 TEST(GlyphBufferTest, GlyphArrayWithOffset) 107 { 108 RefPtr<SimpleFontData> font1 = TestSimpleFontData::create(); 109 RefPtr<SimpleFontData> font2 = TestSimpleFontData::create(); 110 111 GlyphBuffer glyphBuffer; 112 glyphBuffer.add(42, font1.get(), 10); 113 glyphBuffer.add(43, font1.get(), 15); 114 glyphBuffer.add(44, font2.get(), FloatSize(12, 2)); 115 116 EXPECT_FALSE(glyphBuffer.isEmpty()); 117 EXPECT_EQ(3u, glyphBuffer.size()); 118 119 const Glyph* glyphs = glyphBuffer.glyphs(1); 120 EXPECT_EQ(43, glyphs[0]); 121 EXPECT_EQ(44, glyphs[1]); 122 } 123 124 TEST(GlyphBufferTest, AdvanceArrayWithOffset) 125 { 126 RefPtr<SimpleFontData> font1 = TestSimpleFontData::create(); 127 RefPtr<SimpleFontData> font2 = TestSimpleFontData::create(); 128 129 GlyphBuffer glyphBuffer; 130 glyphBuffer.add(42, font1.get(), 10); 131 glyphBuffer.add(43, font1.get(), 15); 132 glyphBuffer.add(44, font2.get(), FloatSize(12, 2)); 133 134 EXPECT_FALSE(glyphBuffer.isEmpty()); 135 EXPECT_EQ(3u, glyphBuffer.size()); 136 137 const FloatSize* advances = glyphBuffer.advances(1); 138 EXPECT_EQ(FloatSize(15, 0), advances[0]); 139 EXPECT_EQ(FloatSize(12, 2), advances[1]); 140 } 141 142 TEST(GlyphBufferTest, Clear) 143 { 144 RefPtr<SimpleFontData> font1 = TestSimpleFontData::create(); 145 RefPtr<SimpleFontData> font2 = TestSimpleFontData::create(); 146 147 GlyphBuffer glyphBuffer; 148 glyphBuffer.add(42, font1.get(), 10); 149 glyphBuffer.add(43, font1.get(), 15); 150 glyphBuffer.add(44, font2.get(), FloatSize(12, 2)); 151 152 EXPECT_FALSE(glyphBuffer.isEmpty()); 153 EXPECT_EQ(3u, glyphBuffer.size()); 154 155 glyphBuffer.clear(); 156 157 EXPECT_TRUE(glyphBuffer.isEmpty()); 158 EXPECT_EQ(0u, glyphBuffer.size()); 159 } 160 161 TEST(GlyphBufferTest, TracksVerticalAdvances) 162 { 163 RefPtr<SimpleFontData> font = TestSimpleFontData::create(); 164 GlyphBuffer glyphBuffer; 165 EXPECT_FALSE(glyphBuffer.hasVerticalAdvances()); 166 glyphBuffer.add(42, font.get(), 10); 167 EXPECT_FALSE(glyphBuffer.hasVerticalAdvances()); 168 glyphBuffer.add(43, font.get(), FloatSize(15, 0)); 169 EXPECT_FALSE(glyphBuffer.hasVerticalAdvances()); 170 glyphBuffer.add(44, font.get(), FloatSize(10, 5)); 171 EXPECT_TRUE(glyphBuffer.hasVerticalAdvances()); 172 glyphBuffer.clear(); 173 EXPECT_FALSE(glyphBuffer.hasVerticalAdvances()); 174 } 175 176 TEST(GlyphBufferTest, Reverse) 177 { 178 RefPtr<SimpleFontData> font1 = TestSimpleFontData::create(); 179 RefPtr<SimpleFontData> font2 = TestSimpleFontData::create(); 180 181 GlyphBuffer glyphBuffer; 182 glyphBuffer.add(42, font1.get(), 10); 183 glyphBuffer.add(43, font1.get(), 15); 184 glyphBuffer.add(44, font2.get(), FloatSize(12, 2)); 185 186 EXPECT_FALSE(glyphBuffer.isEmpty()); 187 EXPECT_EQ(3u, glyphBuffer.size()); 188 EXPECT_TRUE(glyphBuffer.hasVerticalAdvances()); 189 190 glyphBuffer.reverse(); 191 192 EXPECT_FALSE(glyphBuffer.isEmpty()); 193 EXPECT_EQ(3u, glyphBuffer.size()); 194 EXPECT_TRUE(glyphBuffer.hasVerticalAdvances()); 195 EXPECT_EQ(44, glyphBuffer.glyphAt(0)); 196 EXPECT_EQ(43, glyphBuffer.glyphAt(1)); 197 EXPECT_EQ(42, glyphBuffer.glyphAt(2)); 198 EXPECT_EQ(FloatSize(12, 2), glyphBuffer.advanceAt(0)); 199 EXPECT_EQ(FloatSize(15, 0), glyphBuffer.advanceAt(1)); 200 EXPECT_EQ(FloatSize(10, 0), glyphBuffer.advanceAt(2)); 201 EXPECT_EQ(font2.get(), glyphBuffer.fontDataAt(0)); 202 EXPECT_EQ(font1.get(), glyphBuffer.fontDataAt(1)); 203 EXPECT_EQ(font1.get(), glyphBuffer.fontDataAt(2)); 204 } 205 206 TEST(GlyphBufferTest, SetAdvanceWidth) 207 { 208 RefPtr<SimpleFontData> font1 = TestSimpleFontData::create(); 209 RefPtr<SimpleFontData> font2 = TestSimpleFontData::create(); 210 211 GlyphBuffer glyphBuffer; 212 glyphBuffer.add(42, font1.get(), 10); 213 glyphBuffer.add(43, font1.get(), 15); 214 glyphBuffer.add(44, font2.get(), FloatSize(12, 2)); 215 216 glyphBuffer.setAdvanceWidth(1, 20); 217 EXPECT_EQ(FloatSize(20, 0), glyphBuffer.advanceAt(1)); 218 219 glyphBuffer.setAdvanceWidth(2, 10); 220 EXPECT_EQ(FloatSize(10, 2), glyphBuffer.advanceAt(2)); 221 } 222 223 TEST(GlyphBufferTest, ExpandLastAdvance) 224 { 225 RefPtr<SimpleFontData> font1 = TestSimpleFontData::create(); 226 RefPtr<SimpleFontData> font2 = TestSimpleFontData::create(); 227 228 GlyphBuffer glyphBuffer; 229 glyphBuffer.add(42, font1.get(), 10); 230 glyphBuffer.add(43, font1.get(), 15); 231 glyphBuffer.add(44, font2.get(), FloatSize(12, 2)); 232 233 glyphBuffer.expandLastAdvance(20); 234 EXPECT_EQ(FloatSize(32, 2), glyphBuffer.advanceAt(2)); 235 } 236 237 } // namespace 238
