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 <gtest/gtest.h>
18
19#include <minikin/FontCollection.h>
20#include "FontTestUtils.h"
21#include "MinikinFontForTest.h"
22#include "MinikinInternal.h"
23
24namespace 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)
41const char kVsTestFont[] = kTestFontDir "/VariationSelectorTest-Regular.ttf";
42
43void 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
59TEST(FontCollectionTest, hasVariationSelectorTest) {
60  std::shared_ptr<MinikinFont> font(new MinikinFontForTest(kVsTestFont));
61  std::shared_ptr<FontFamily> family(new FontFamily(
62          std::vector<Font>({ Font(font, FontStyle()) })));
63  std::vector<std::shared_ptr<FontFamily>> families({ family });
64  std::shared_ptr<FontCollection> fc(new FontCollection(families));
65
66  EXPECT_FALSE(fc->hasVariationSelector(0x82A6, 0));
67  expectVSGlyphs(fc.get(), 0x82A6, std::set<uint32_t>({0xFE00, 0xFE0E, 0xE0100, 0xE0101, 0xE0102}));
68
69  EXPECT_FALSE(fc->hasVariationSelector(0x845B, 0));
70  expectVSGlyphs(fc.get(), 0x845B, std::set<uint32_t>({0xFE01, 0xFE0E, 0xE0101, 0xE0102, 0xE0103}));
71
72  EXPECT_FALSE(fc->hasVariationSelector(0x537F, 0));
73  expectVSGlyphs(fc.get(), 0x537F, std::set<uint32_t>({0xFE0E}));
74
75  EXPECT_FALSE(fc->hasVariationSelector(0x717D, 0));
76  expectVSGlyphs(fc.get(), 0x717D, std::set<uint32_t>({0xFE02, 0xE0102, 0xE0103}));
77}
78
79const char kEmojiXmlFile[] = kTestFontDir "emoji.xml";
80
81TEST(FontCollectionTest, hasVariationSelectorTest_emoji) {
82    std::shared_ptr<FontCollection> collection(getFontCollection(kTestFontDir, 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}
113
114TEST(FontCollectionTest, newEmojiTest) {
115    std::shared_ptr<FontCollection> collection(getFontCollection(kTestFontDir, kEmojiXmlFile));
116
117    // U+2695, U+2640, U+2642 are not in emoji catrgory in Unicode 9 but they are now in emoji
118    // category. Should return true even if U+FE0E was appended.
119    // These three emojis are only avalilable in TextEmoji.ttf but U+2695 is excluded here since it
120    // is used in other tests.
121    EXPECT_TRUE(collection->hasVariationSelector(0x2640, 0xFE0E));
122    EXPECT_FALSE(collection->hasVariationSelector(0x2640, 0xFE0F));
123    EXPECT_TRUE(collection->hasVariationSelector(0x2642, 0xFE0E));
124    EXPECT_FALSE(collection->hasVariationSelector(0x2642, 0xFE0F));
125}
126
127TEST(FontCollectionTest, createWithVariations) {
128    // This font has 'wdth' and 'wght' axes.
129    const char kMultiAxisFont[] = kTestFontDir "/MultiAxis.ttf";
130    const char kNoAxisFont[] = kTestFontDir "/Regular.ttf";
131
132    std::shared_ptr<MinikinFont> multiAxisFont(new MinikinFontForTest(kMultiAxisFont));
133    std::shared_ptr<FontFamily> multiAxisFamily(new FontFamily(
134            std::vector<Font>({ Font(multiAxisFont, FontStyle()) })));
135    std::vector<std::shared_ptr<FontFamily>> multiAxisFamilies({multiAxisFamily});
136    std::shared_ptr<FontCollection> multiAxisFc(new FontCollection(multiAxisFamilies));
137
138    std::shared_ptr<MinikinFont> noAxisFont(new MinikinFontForTest(kNoAxisFont));
139    std::shared_ptr<FontFamily> noAxisFamily(new FontFamily(
140            std::vector<Font>({ Font(noAxisFont, FontStyle()) })));
141    std::vector<std::shared_ptr<FontFamily>> noAxisFamilies({noAxisFamily});
142    std::shared_ptr<FontCollection> noAxisFc(new FontCollection(noAxisFamilies));
143
144    {
145        // Do not ceate new instance if none of variations are specified.
146        EXPECT_EQ(nullptr,
147                multiAxisFc->createCollectionWithVariation(std::vector<FontVariation>()));
148        EXPECT_EQ(nullptr,
149                noAxisFc->createCollectionWithVariation(std::vector<FontVariation>()));
150    }
151    {
152        // New instance should be used for supported variation.
153        std::vector<FontVariation> variations = {
154                { MinikinFont::MakeTag('w', 'd', 't', 'h'), 1.0f }
155        };
156        std::shared_ptr<FontCollection> newFc(
157                multiAxisFc->createCollectionWithVariation(variations));
158        EXPECT_NE(nullptr, newFc.get());
159        EXPECT_NE(multiAxisFc.get(), newFc.get());
160
161        EXPECT_EQ(nullptr, noAxisFc->createCollectionWithVariation(variations));
162    }
163    {
164        // New instance should be used for supported variation (multiple variations case).
165        std::vector<FontVariation> variations = {
166                { MinikinFont::MakeTag('w', 'd', 't', 'h'), 1.0f },
167                { MinikinFont::MakeTag('w', 'g', 'h', 't'), 1.0f }
168        };
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        // Do not ceate new instance if none of variations are supported.
178        std::vector<FontVariation> variations = {
179                { MinikinFont::MakeTag('Z', 'Z', 'Z', 'Z'), 1.0f }
180        };
181        EXPECT_EQ(nullptr, multiAxisFc->createCollectionWithVariation(variations));
182        EXPECT_EQ(nullptr, noAxisFc->createCollectionWithVariation(variations));
183    }
184    {
185        // At least one axis is supported, should create new instance.
186        std::vector<FontVariation> variations = {
187                { MinikinFont::MakeTag('w', 'd', 't', 'h'), 1.0f },
188                { MinikinFont::MakeTag('Z', 'Z', 'Z', 'Z'), 1.0f }
189        };
190        std::shared_ptr<FontCollection> newFc(
191                multiAxisFc->createCollectionWithVariation(variations));
192        EXPECT_NE(nullptr, newFc.get());
193        EXPECT_NE(multiAxisFc.get(), newFc.get());
194
195        EXPECT_EQ(nullptr, noAxisFc->createCollectionWithVariation(variations));
196    }
197}
198
199}  // namespace minikin
200