1 /*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "minikin/FontCollection.h"
18
19 #include <gtest/gtest.h>
20
21 #include "FontTestUtils.h"
22 #include "FreeTypeMinikinFontForTest.h"
23 #include "MinikinInternal.h"
24
25 namespace minikin {
26
27 // The test font has following glyphs.
28 // U+82A6
29 // U+82A6 U+FE00 (VS1)
30 // U+82A6 U+E0100 (VS17)
31 // U+82A6 U+E0101 (VS18)
32 // U+82A6 U+E0102 (VS19)
33 // U+845B
34 // U+845B U+FE01 (VS2)
35 // U+845B U+E0101 (VS18)
36 // U+845B U+E0102 (VS19)
37 // U+845B U+E0103 (VS20)
38 // U+537F
39 // U+717D U+FE02 (VS3)
40 // U+717D U+E0102 (VS19)
41 // U+717D U+E0103 (VS20)
42 const char kVsTestFont[] = "VariationSelectorTest-Regular.ttf";
43
expectVSGlyphs(const FontCollection * fc,uint32_t codepoint,const std::set<uint32_t> & vsSet)44 void expectVSGlyphs(const FontCollection* fc, uint32_t codepoint, const std::set<uint32_t>& vsSet) {
45 for (uint32_t vs = 0xFE00; vs <= 0xE01EF; ++vs) {
46 // Move to variation selectors supplements after variation selectors.
47 if (vs == 0xFF00) {
48 vs = 0xE0100;
49 }
50 if (vsSet.find(vs) == vsSet.end()) {
51 EXPECT_FALSE(fc->hasVariationSelector(codepoint, vs))
52 << "Glyph for U+" << std::hex << codepoint << " U+" << vs;
53 } else {
54 EXPECT_TRUE(fc->hasVariationSelector(codepoint, vs))
55 << "Glyph for U+" << std::hex << codepoint << " U+" << vs;
56 }
57 }
58 }
59
expectVSGlyphsForVsTestFont(const FontCollection * fc)60 void expectVSGlyphsForVsTestFont(const FontCollection* fc) {
61 EXPECT_FALSE(fc->hasVariationSelector(0x82A6, 0));
62 expectVSGlyphs(fc, 0x82A6, std::set<uint32_t>({0xFE00, 0xFE0E, 0xE0100, 0xE0101, 0xE0102}));
63
64 EXPECT_FALSE(fc->hasVariationSelector(0x845B, 0));
65 expectVSGlyphs(fc, 0x845B, std::set<uint32_t>({0xFE01, 0xFE0E, 0xE0101, 0xE0102, 0xE0103}));
66
67 EXPECT_FALSE(fc->hasVariationSelector(0x537F, 0));
68 expectVSGlyphs(fc, 0x537F, std::set<uint32_t>({0xFE0E}));
69
70 EXPECT_FALSE(fc->hasVariationSelector(0x717D, 0));
71 expectVSGlyphs(fc, 0x717D, std::set<uint32_t>({0xFE02, 0xE0102, 0xE0103}));
72 }
73
TEST(FontCollectionTest,hasVariationSelectorTest)74 TEST(FontCollectionTest, hasVariationSelectorTest) {
75 auto fc = buildFontCollection(kVsTestFont);
76 expectVSGlyphsForVsTestFont(fc.get());
77 }
78
79 const char kEmojiXmlFile[] = "emoji.xml";
80
TEST(FontCollectionTest,hasVariationSelectorTest_emoji)81 TEST(FontCollectionTest, hasVariationSelectorTest_emoji) {
82 auto collection = buildFontCollectionFromXml(kEmojiXmlFile);
83
84 // Both text/color font have cmap format 14 subtable entry for VS15/VS16 respectively.
85 EXPECT_TRUE(collection->hasVariationSelector(0x2623, 0xFE0E));
86 EXPECT_TRUE(collection->hasVariationSelector(0x2623, 0xFE0F));
87
88 // The text font has cmap format 14 subtable entry for VS15 but the color font doesn't have for
89 // VS16
90 EXPECT_TRUE(collection->hasVariationSelector(0x2626, 0xFE0E));
91 EXPECT_FALSE(collection->hasVariationSelector(0x2626, 0xFE0F));
92
93 // The color font has cmap format 14 subtable entry for VS16 but the text font doesn't have for
94 // VS15.
95 EXPECT_TRUE(collection->hasVariationSelector(0x262A, 0xFE0E));
96 EXPECT_TRUE(collection->hasVariationSelector(0x262A, 0xFE0F));
97
98 // Neither text/color font have cmap format 14 subtable entry for VS15/VS16.
99 EXPECT_TRUE(collection->hasVariationSelector(0x262E, 0xFE0E));
100 EXPECT_FALSE(collection->hasVariationSelector(0x262E, 0xFE0F));
101
102 // Text font doesn't support U+1F3FD. Only the color emoji fonts has. So VS15 is not supported.
103 EXPECT_FALSE(collection->hasVariationSelector(0x1F3FD, 0xFE0E));
104
105 // Text font doesn't have U+262F U+FE0E or even its base code point U+262F.
106 EXPECT_FALSE(collection->hasVariationSelector(0x262F, 0xFE0E));
107
108 // None of the fonts support U+2229.
109 EXPECT_FALSE(collection->hasVariationSelector(0x2229, 0xFE0E));
110 EXPECT_FALSE(collection->hasVariationSelector(0x2229, 0xFE0F));
111 }
112
TEST(FontCollectionTest,newEmojiTest)113 TEST(FontCollectionTest, newEmojiTest) {
114 auto collection = buildFontCollectionFromXml(kEmojiXmlFile);
115
116 // U+2695, U+2640, U+2642 are not in emoji catrgory in Unicode 9 but they are now in emoji
117 // category. Should return true even if U+FE0E was appended.
118 // These three emojis are only avalilable in TextEmoji.ttf but U+2695 is excluded here since it
119 // is used in other tests.
120 EXPECT_TRUE(collection->hasVariationSelector(0x2640, 0xFE0E));
121 EXPECT_FALSE(collection->hasVariationSelector(0x2640, 0xFE0F));
122 EXPECT_TRUE(collection->hasVariationSelector(0x2642, 0xFE0E));
123 EXPECT_FALSE(collection->hasVariationSelector(0x2642, 0xFE0F));
124 }
125
TEST(FontCollectionTest,createWithVariations)126 TEST(FontCollectionTest, createWithVariations) {
127 // This font has 'wdth' and 'wght' axes.
128 const char kMultiAxisFont[] = "MultiAxis.ttf";
129 const char kNoAxisFont[] = "Regular.ttf";
130
131 std::shared_ptr<FontCollection> multiAxisFc = buildFontCollection(kMultiAxisFont);
132 std::shared_ptr<FontCollection> noAxisFc = buildFontCollection(kNoAxisFont);
133
134 {
135 // Do not ceate new instance if none of variations are specified.
136 EXPECT_EQ(nullptr,
137 multiAxisFc->createCollectionWithVariation(std::vector<FontVariation>()));
138 EXPECT_EQ(nullptr, noAxisFc->createCollectionWithVariation(std::vector<FontVariation>()));
139 }
140 {
141 // New instance should be used for supported variation.
142 std::vector<FontVariation> variations = {{MinikinFont::MakeTag('w', 'd', 't', 'h'), 1.0f}};
143 std::shared_ptr<FontCollection> newFc(
144 multiAxisFc->createCollectionWithVariation(variations));
145 EXPECT_NE(nullptr, newFc.get());
146 EXPECT_NE(multiAxisFc.get(), newFc.get());
147
148 EXPECT_EQ(nullptr, noAxisFc->createCollectionWithVariation(variations));
149 }
150 {
151 // New instance should be used for supported variation (multiple variations case).
152 std::vector<FontVariation> variations = {{MinikinFont::MakeTag('w', 'd', 't', 'h'), 1.0f},
153 {MinikinFont::MakeTag('w', 'g', 'h', 't'), 1.0f}};
154 std::shared_ptr<FontCollection> newFc(
155 multiAxisFc->createCollectionWithVariation(variations));
156 EXPECT_NE(nullptr, newFc.get());
157 EXPECT_NE(multiAxisFc.get(), newFc.get());
158
159 EXPECT_EQ(nullptr, noAxisFc->createCollectionWithVariation(variations));
160 }
161 {
162 // Do not ceate new instance if none of variations are supported.
163 std::vector<FontVariation> variations = {{MinikinFont::MakeTag('Z', 'Z', 'Z', 'Z'), 1.0f}};
164 EXPECT_EQ(nullptr, multiAxisFc->createCollectionWithVariation(variations));
165 EXPECT_EQ(nullptr, noAxisFc->createCollectionWithVariation(variations));
166 }
167 {
168 // At least one axis is supported, should create new instance.
169 std::vector<FontVariation> variations = {{MinikinFont::MakeTag('w', 'd', 't', 'h'), 1.0f},
170 {MinikinFont::MakeTag('Z', 'Z', 'Z', 'Z'), 1.0f}};
171 std::shared_ptr<FontCollection> newFc(
172 multiAxisFc->createCollectionWithVariation(variations));
173 EXPECT_NE(nullptr, newFc.get());
174 EXPECT_NE(multiAxisFc.get(), newFc.get());
175
176 EXPECT_EQ(nullptr, noAxisFc->createCollectionWithVariation(variations));
177 }
178 }
179
writeToBuffer(const std::vector<std::shared_ptr<FontCollection>> & collections)180 std::vector<uint8_t> writeToBuffer(
181 const std::vector<std::shared_ptr<FontCollection>>& collections) {
182 BufferWriter fakeWriter(nullptr);
183 FontCollection::writeVector<writeFreeTypeMinikinFontForTest>(&fakeWriter, collections);
184 std::vector<uint8_t> buffer(fakeWriter.size());
185 BufferWriter writer(buffer.data());
186 FontCollection::writeVector<writeFreeTypeMinikinFontForTest>(&writer, collections);
187 return buffer;
188 }
189
TEST(FontCollectionTest,bufferTest)190 TEST(FontCollectionTest, bufferTest) {
191 {
192 std::vector<std::shared_ptr<FontCollection>> original({buildFontCollection(kVsTestFont)});
193 std::vector<uint8_t> buffer = writeToBuffer(original);
194 BufferReader reader(buffer.data());
195 auto copied = FontCollection::readVector<readFreeTypeMinikinFontForTest>(&reader);
196 EXPECT_EQ(1u, copied.size());
197 expectVSGlyphsForVsTestFont(copied[0].get());
198 EXPECT_EQ(original[0]->getSupportedTags(), copied[0]->getSupportedTags());
199 // Id will be different.
200 EXPECT_NE(original[0]->getId(), copied[0]->getId());
201 std::vector<uint8_t> newBuffer = writeToBuffer(copied);
202 EXPECT_EQ(buffer, newBuffer);
203 }
204 {
205 // Test that FontFamily instances are shared.
206 std::vector<std::shared_ptr<FontFamily>> families = {buildFontFamily(kVsTestFont)};
207 auto fc1 = std::make_shared<FontCollection>(families);
208 auto fc2 = std::make_shared<FontCollection>(families);
209 std::vector<std::shared_ptr<FontCollection>> original({fc1, fc2});
210 std::vector<uint8_t> buffer = writeToBuffer(original);
211 BufferReader reader(buffer.data());
212 auto copied = FontCollection::readVector<readFreeTypeMinikinFontForTest>(&reader);
213 EXPECT_EQ(2u, copied.size());
214 EXPECT_EQ(copied[0]->mFamilies[0], copied[1]->mFamilies[0]);
215 std::vector<uint8_t> newBuffer = writeToBuffer(copied);
216 EXPECT_EQ(buffer, newBuffer);
217 }
218 {
219 // Test axes.
220 // This font has 'wdth' and 'wght' axes.
221 const char kMultiAxisFont[] = "MultiAxis.ttf";
222 std::vector<std::shared_ptr<FontCollection>> original(
223 {buildFontCollection(kMultiAxisFont)});
224 std::vector<uint8_t> buffer = writeToBuffer(original);
225 BufferReader reader(buffer.data());
226 auto copied = FontCollection::readVector<readFreeTypeMinikinFontForTest>(&reader);
227 EXPECT_EQ(1u, copied.size());
228 EXPECT_EQ(1u,
229 copied[0]->getSupportedTags().count(MinikinFont::MakeTag('w', 'd', 't', 'h')));
230 EXPECT_EQ(1u,
231 copied[0]->getSupportedTags().count(MinikinFont::MakeTag('w', 'g', 'h', 't')));
232 std::vector<uint8_t> newBuffer = writeToBuffer(copied);
233 EXPECT_EQ(buffer, newBuffer);
234 }
235 }
236
TEST(FontCollectionTest,FamilyMatchResultBuilderTest)237 TEST(FontCollectionTest, FamilyMatchResultBuilderTest) {
238 using Builder = FontCollection::FamilyMatchResult::Builder;
239 EXPECT_TRUE(Builder().empty());
240 EXPECT_EQ(0u, Builder().size());
241 EXPECT_EQ(1u, Builder().add(5).size());
242 EXPECT_EQ(2u, Builder().add(5).add(4).size());
243
244 // Reset
245 EXPECT_TRUE(Builder().add(5).reset().empty());
246 EXPECT_EQ(0u, Builder().add(5).reset().size());
247 }
248
TEST(FontCollectionTest,FamilyMatchResultTest)249 TEST(FontCollectionTest, FamilyMatchResultTest) {
250 using Builder = FontCollection::FamilyMatchResult::Builder;
251
252 auto r = Builder().build();
253 EXPECT_EQ(0u, r.size());
254 EXPECT_TRUE(r.empty());
255
256 r = Builder().add(1).build();
257 EXPECT_EQ(1u, r.size());
258 EXPECT_FALSE(r.empty());
259 EXPECT_EQ(1u, r[0]);
260
261 r = Builder().add(1).add(2).build();
262 EXPECT_EQ(2u, r.size());
263 EXPECT_FALSE(r.empty());
264 EXPECT_EQ(1u, r[0]);
265 EXPECT_EQ(2u, r[1]);
266 }
267
TEST(FontCollectionTest,FamilyMatchResultTest_BuilderHoldeFirst7)268 TEST(FontCollectionTest, FamilyMatchResultTest_BuilderHoldeFirst7) {
269 auto b = FontCollection::FamilyMatchResult::Builder();
270 for (uint8_t i = 0; i < 128; ++i) {
271 b.add(i);
272 }
273 auto r = b.build();
274 EXPECT_EQ(7u, r.size());
275 EXPECT_FALSE(r.empty());
276 EXPECT_EQ(0u, r[0]);
277 EXPECT_EQ(1u, r[1]);
278 EXPECT_EQ(2u, r[2]);
279 EXPECT_EQ(3u, r[3]);
280 EXPECT_EQ(4u, r[4]);
281 EXPECT_EQ(5u, r[5]);
282 EXPECT_EQ(6u, r[6]);
283 }
284
TEST(FontCollectionTest,FamilyMatchResultTest_iterator)285 TEST(FontCollectionTest, FamilyMatchResultTest_iterator) {
286 auto b = FontCollection::FamilyMatchResult::Builder();
287 for (uint8_t i = 0; i < 7; ++i) {
288 b.add(i);
289 }
290 auto r = b.build();
291 EXPECT_EQ(7u, r.size());
292 EXPECT_FALSE(r.empty());
293 int i = 0;
294 for (auto v : r) {
295 EXPECT_EQ(i, v);
296 i++;
297 }
298 }
299
TEST(FontCollectionTest,FamilyMatchResultTest_intersect)300 TEST(FontCollectionTest, FamilyMatchResultTest_intersect) {
301 using Builder = FontCollection::FamilyMatchResult::Builder;
302
303 EXPECT_EQ(Builder().add(1).add(2).add(3).build(),
304 FontCollection::FamilyMatchResult::intersect(Builder().add(1).add(2).add(3).build(),
305 Builder().add(1).add(2).add(3).build()));
306
307 EXPECT_EQ(Builder().build(),
308 FontCollection::FamilyMatchResult::intersect(Builder().add(1).add(2).add(3).build(),
309 Builder().build()));
310
311 EXPECT_EQ(Builder().build(),
312 FontCollection::FamilyMatchResult::intersect(Builder().add(2).add(4).add(6).build(),
313 Builder().add(1).add(3).add(5).build()));
314
315 EXPECT_EQ(Builder().add(1).add(3).build(),
316 FontCollection::FamilyMatchResult::intersect(Builder().add(1).add(2).add(3).build(),
317 Builder().add(1).add(3).add(5).build()));
318 }
319
320 } // namespace minikin
321