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 "MinikinInternal.h"
23
24 namespace minikin {
25
26 // The test font has following glyphs.
27 // U+82A6
28 // U+82A6 U+FE00 (VS1)
29 // U+82A6 U+E0100 (VS17)
30 // U+82A6 U+E0101 (VS18)
31 // U+82A6 U+E0102 (VS19)
32 // U+845B
33 // U+845B U+FE01 (VS2)
34 // U+845B U+E0101 (VS18)
35 // U+845B U+E0102 (VS19)
36 // U+845B U+E0103 (VS20)
37 // U+537F
38 // U+717D U+FE02 (VS3)
39 // U+717D U+E0102 (VS19)
40 // U+717D U+E0103 (VS20)
41 const char kVsTestFont[] = "VariationSelectorTest-Regular.ttf";
42
expectVSGlyphs(const FontCollection * fc,uint32_t codepoint,const std::set<uint32_t> & vsSet)43 void expectVSGlyphs(const FontCollection* fc, uint32_t codepoint, const std::set<uint32_t>& vsSet) {
44 for (uint32_t vs = 0xFE00; vs <= 0xE01EF; ++vs) {
45 // Move to variation selectors supplements after variation selectors.
46 if (vs == 0xFF00) {
47 vs = 0xE0100;
48 }
49 if (vsSet.find(vs) == vsSet.end()) {
50 EXPECT_FALSE(fc->hasVariationSelector(codepoint, vs))
51 << "Glyph for U+" << std::hex << codepoint << " U+" << vs;
52 } else {
53 EXPECT_TRUE(fc->hasVariationSelector(codepoint, vs))
54 << "Glyph for U+" << std::hex << codepoint << " U+" << vs;
55 }
56 }
57 }
58
TEST(FontCollectionTest,hasVariationSelectorTest)59 TEST(FontCollectionTest, hasVariationSelectorTest) {
60 auto fc = buildFontCollection(kVsTestFont);
61
62 EXPECT_FALSE(fc->hasVariationSelector(0x82A6, 0));
63 expectVSGlyphs(fc.get(), 0x82A6,
64 std::set<uint32_t>({0xFE00, 0xFE0E, 0xE0100, 0xE0101, 0xE0102}));
65
66 EXPECT_FALSE(fc->hasVariationSelector(0x845B, 0));
67 expectVSGlyphs(fc.get(), 0x845B,
68 std::set<uint32_t>({0xFE01, 0xFE0E, 0xE0101, 0xE0102, 0xE0103}));
69
70 EXPECT_FALSE(fc->hasVariationSelector(0x537F, 0));
71 expectVSGlyphs(fc.get(), 0x537F, std::set<uint32_t>({0xFE0E}));
72
73 EXPECT_FALSE(fc->hasVariationSelector(0x717D, 0));
74 expectVSGlyphs(fc.get(), 0x717D, std::set<uint32_t>({0xFE02, 0xE0102, 0xE0103}));
75 }
76
77 const char kEmojiXmlFile[] = "emoji.xml";
78
TEST(FontCollectionTest,hasVariationSelectorTest_emoji)79 TEST(FontCollectionTest, hasVariationSelectorTest_emoji) {
80 auto collection = buildFontCollectionFromXml(kEmojiXmlFile);
81
82 // Both text/color font have cmap format 14 subtable entry for VS15/VS16 respectively.
83 EXPECT_TRUE(collection->hasVariationSelector(0x2623, 0xFE0E));
84 EXPECT_TRUE(collection->hasVariationSelector(0x2623, 0xFE0F));
85
86 // The text font has cmap format 14 subtable entry for VS15 but the color font doesn't have for
87 // VS16
88 EXPECT_TRUE(collection->hasVariationSelector(0x2626, 0xFE0E));
89 EXPECT_FALSE(collection->hasVariationSelector(0x2626, 0xFE0F));
90
91 // The color font has cmap format 14 subtable entry for VS16 but the text font doesn't have for
92 // VS15.
93 EXPECT_TRUE(collection->hasVariationSelector(0x262A, 0xFE0E));
94 EXPECT_TRUE(collection->hasVariationSelector(0x262A, 0xFE0F));
95
96 // Neither text/color font have cmap format 14 subtable entry for VS15/VS16.
97 EXPECT_TRUE(collection->hasVariationSelector(0x262E, 0xFE0E));
98 EXPECT_FALSE(collection->hasVariationSelector(0x262E, 0xFE0F));
99
100 // Text font doesn't support U+1F3FD. Only the color emoji fonts has. So VS15 is not supported.
101 EXPECT_FALSE(collection->hasVariationSelector(0x1F3FD, 0xFE0E));
102
103 // Text font doesn't have U+262F U+FE0E or even its base code point U+262F.
104 EXPECT_FALSE(collection->hasVariationSelector(0x262F, 0xFE0E));
105
106 // None of the fonts support U+2229.
107 EXPECT_FALSE(collection->hasVariationSelector(0x2229, 0xFE0E));
108 EXPECT_FALSE(collection->hasVariationSelector(0x2229, 0xFE0F));
109 }
110
TEST(FontCollectionTest,newEmojiTest)111 TEST(FontCollectionTest, newEmojiTest) {
112 auto collection = buildFontCollectionFromXml(kEmojiXmlFile);
113
114 // U+2695, U+2640, U+2642 are not in emoji catrgory in Unicode 9 but they are now in emoji
115 // category. Should return true even if U+FE0E was appended.
116 // These three emojis are only avalilable in TextEmoji.ttf but U+2695 is excluded here since it
117 // is used in other tests.
118 EXPECT_TRUE(collection->hasVariationSelector(0x2640, 0xFE0E));
119 EXPECT_FALSE(collection->hasVariationSelector(0x2640, 0xFE0F));
120 EXPECT_TRUE(collection->hasVariationSelector(0x2642, 0xFE0E));
121 EXPECT_FALSE(collection->hasVariationSelector(0x2642, 0xFE0F));
122 }
123
TEST(FontCollectionTest,createWithVariations)124 TEST(FontCollectionTest, createWithVariations) {
125 // This font has 'wdth' and 'wght' axes.
126 const char kMultiAxisFont[] = "MultiAxis.ttf";
127 const char kNoAxisFont[] = "Regular.ttf";
128
129 std::shared_ptr<FontCollection> multiAxisFc = buildFontCollection(kMultiAxisFont);
130 std::shared_ptr<FontCollection> noAxisFc = buildFontCollection(kNoAxisFont);
131
132 {
133 // Do not ceate new instance if none of variations are specified.
134 EXPECT_EQ(nullptr,
135 multiAxisFc->createCollectionWithVariation(std::vector<FontVariation>()));
136 EXPECT_EQ(nullptr, noAxisFc->createCollectionWithVariation(std::vector<FontVariation>()));
137 }
138 {
139 // New instance should be used for supported variation.
140 std::vector<FontVariation> variations = {{MinikinFont::MakeTag('w', 'd', 't', 'h'), 1.0f}};
141 std::shared_ptr<FontCollection> newFc(
142 multiAxisFc->createCollectionWithVariation(variations));
143 EXPECT_NE(nullptr, newFc.get());
144 EXPECT_NE(multiAxisFc.get(), newFc.get());
145
146 EXPECT_EQ(nullptr, noAxisFc->createCollectionWithVariation(variations));
147 }
148 {
149 // New instance should be used for supported variation (multiple variations case).
150 std::vector<FontVariation> variations = {{MinikinFont::MakeTag('w', 'd', 't', 'h'), 1.0f},
151 {MinikinFont::MakeTag('w', 'g', 'h', 't'), 1.0f}};
152 std::shared_ptr<FontCollection> newFc(
153 multiAxisFc->createCollectionWithVariation(variations));
154 EXPECT_NE(nullptr, newFc.get());
155 EXPECT_NE(multiAxisFc.get(), newFc.get());
156
157 EXPECT_EQ(nullptr, noAxisFc->createCollectionWithVariation(variations));
158 }
159 {
160 // Do not ceate new instance if none of variations are supported.
161 std::vector<FontVariation> variations = {{MinikinFont::MakeTag('Z', 'Z', 'Z', 'Z'), 1.0f}};
162 EXPECT_EQ(nullptr, multiAxisFc->createCollectionWithVariation(variations));
163 EXPECT_EQ(nullptr, noAxisFc->createCollectionWithVariation(variations));
164 }
165 {
166 // At least one axis is supported, should create new instance.
167 std::vector<FontVariation> variations = {{MinikinFont::MakeTag('w', 'd', 't', 'h'), 1.0f},
168 {MinikinFont::MakeTag('Z', 'Z', 'Z', 'Z'), 1.0f}};
169 std::shared_ptr<FontCollection> newFc(
170 multiAxisFc->createCollectionWithVariation(variations));
171 EXPECT_NE(nullptr, newFc.get());
172 EXPECT_NE(multiAxisFc.get(), newFc.get());
173
174 EXPECT_EQ(nullptr, noAxisFc->createCollectionWithVariation(variations));
175 }
176 }
177
178 } // namespace minikin
179