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0f2a025d13
This CL introduces new method hasVariationSelector into FontFamily but it is not used in production code. So no behavior changes are expected. This CL contains the following changes: - Introduce hasVariationSelector which returns true if the corresponding font has a glyph for a code point and variation selector pair. - Introduce purgeHbFontCache since hb_face_t won't be released by keeping hb_font_t. - Introduce unit tests with self-built font. Change-Id: I659a6d03d9ec446b409e1fba2758452abb9f44fa
123 lines
4.1 KiB
C++
123 lines
4.1 KiB
C++
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <gtest/gtest.h>
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#include <minikin/FontFamily.h>
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#include "MinikinFontForTest.h"
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#include "MinikinInternal.h"
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namespace android {
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// The test font has following glyphs.
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// U+82A6
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// U+82A6 U+FE00 (VS1)
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// U+82A6 U+E0100 (VS17)
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// U+82A6 U+E0101 (VS18)
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// U+82A6 U+E0102 (VS19)
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// U+845B
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// U+845B U+FE00 (VS2)
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// U+845B U+E0101 (VS18)
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// U+845B U+E0102 (VS19)
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// U+845B U+E0103 (VS20)
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// U+537F
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// U+717D U+FE02 (VS3)
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// U+717D U+E0102 (VS19)
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// U+717D U+E0103 (VS20)
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const char kVsTestFont[] = "/data/minikin/test/data/VarioationSelectorTest-Regular.ttf";
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class FontFamilyTest : public testing::Test {
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public:
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virtual void SetUp() override {
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if (access(kVsTestFont, R_OK) != 0) {
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FAIL() << "Unable to read " << kVsTestFont << ". "
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<< "Please prepare the test data directory. "
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<< "For more details, please see how_to_run.txt.";
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}
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}
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};
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// Asserts that the font family has glyphs for and only for specified codepoint
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// and variationSelector pairs.
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void expectVSGlyphs(FontFamily* family, uint32_t codepoint, const std::set<uint32_t>& vs) {
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for (uint32_t i = 0xFE00; i <= 0xE01EF; ++i) {
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// Move to variation selectors supplements after variation selectors.
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if (i == 0xFF00) {
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i = 0xE0100;
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}
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if (vs.find(i) == vs.end()) {
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EXPECT_FALSE(family->hasVariationSelector(codepoint, i))
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<< "Glyph for U+" << std::hex << codepoint << " U+" << i;
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} else {
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EXPECT_TRUE(family->hasVariationSelector(codepoint, i))
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<< "Glyph for U+" << std::hex << codepoint << " U+" << i;
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}
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}
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}
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TEST_F(FontFamilyTest, hasVariationSelectorTest) {
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MinikinFontForTest minikinFont(kVsTestFont);
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FontFamily family;
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family.addFont(&minikinFont);
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AutoMutex _l(gMinikinLock);
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const uint32_t kVS1 = 0xFE00;
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const uint32_t kVS2 = 0xFE01;
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const uint32_t kVS3 = 0xFE02;
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const uint32_t kVS17 = 0xE0100;
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const uint32_t kVS18 = 0xE0101;
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const uint32_t kVS19 = 0xE0102;
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const uint32_t kVS20 = 0xE0103;
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const uint32_t kSupportedChar1 = 0x82A6;
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EXPECT_TRUE(family.getCoverage()->get(kSupportedChar1));
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expectVSGlyphs(&family, kSupportedChar1, std::set<uint32_t>({kVS1, kVS17, kVS18, kVS19}));
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const uint32_t kSupportedChar2 = 0x845B;
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EXPECT_TRUE(family.getCoverage()->get(kSupportedChar2));
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expectVSGlyphs(&family, kSupportedChar2, std::set<uint32_t>({kVS2, kVS18, kVS19, kVS20}));
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const uint32_t kNoVsSupportedChar = 0x537F;
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EXPECT_TRUE(family.getCoverage()->get(kNoVsSupportedChar));
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expectVSGlyphs(&family, kNoVsSupportedChar, std::set<uint32_t>());
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const uint32_t kVsOnlySupportedChar = 0x717D;
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EXPECT_FALSE(family.getCoverage()->get(kVsOnlySupportedChar));
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expectVSGlyphs(&family, kVsOnlySupportedChar, std::set<uint32_t>({kVS3, kVS19, kVS20}));
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const uint32_t kNotSupportedChar = 0x845C;
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EXPECT_FALSE(family.getCoverage()->get(kNotSupportedChar));
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expectVSGlyphs(&family, kNotSupportedChar, std::set<uint32_t>());
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}
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TEST_F(FontFamilyTest, hasVariationSelectorWorksAfterpurgeHbFontCache) {
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MinikinFontForTest minikinFont(kVsTestFont);
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FontFamily family;
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family.addFont(&minikinFont);
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const uint32_t kVS1 = 0xFE00;
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const uint32_t kSupportedChar1 = 0x82A6;
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AutoMutex _l(gMinikinLock);
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EXPECT_TRUE(family.hasVariationSelector(kSupportedChar1, kVS1));
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family.purgeHbFontCache();
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EXPECT_TRUE(family.hasVariationSelector(kSupportedChar1, kVS1));
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}
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} // namespace android
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