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198b46f1fe
This is 2nd attempt of I8df992a6851021903478972601a9a5c9424b100c. The main purpose of this CL is expanding FontLanguage to be able to save full script tag. Previously, FontLangauge kept only limited script tags. With this CL, FontLanguage keeps all script tags. This CL contains the following changes: - FontLanguage changes: -- Moved to private directory not to be instantiated outside of Minikin. -- Removed bool(), bits(), FontLanguage(uint32_t) methods which are no longer used. -- Change the FontLanguage internal data structure. -- Introduces script match logic. - FontLanguages changes: -- Moved to private directory not to be instantiated outside of Minikin. -- This is now std::vector<FontLanguage> - FontLanguageListCache changes: -- Now FontLanguageListCache::getId through FontStyle::registerLanguageList is the only way to instantiate the FontLanguage. -- Normalize input to be BCP47 compliant identifier by ICU. Bug: 26168983 Change-Id: I431b3f361a7635497c05b85e8ecbeb48d9aef63e
57 lines
1.8 KiB
C++
57 lines
1.8 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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#ifndef MINIKIN_FONT_LANGUAGE_LIST_CACHE_H
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#define MINIKIN_FONT_LANGUAGE_LIST_CACHE_H
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#include <unordered_map>
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#include <minikin/FontFamily.h>
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#include "FontLanguage.h"
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namespace android {
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class FontLanguageListCache {
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public:
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// A special ID for the empty language list.
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// This value must be 0 since the empty language list is inserted into mLanguageLists by
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// default.
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const static uint32_t kEmptyListId = 0;
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// Returns language list ID for the given string representation of FontLanguages.
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// Caller should acquire a lock before calling the method.
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static uint32_t getId(const std::string& languages);
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// Caller should acquire a lock before calling the method.
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static const FontLanguages& getById(uint32_t id);
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private:
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FontLanguageListCache() {} // Singleton
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~FontLanguageListCache() {}
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// Caller should acquire a lock before calling the method.
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static FontLanguageListCache* getInstance();
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std::vector<FontLanguages> mLanguageLists;
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// A map from string representation of the font language list to the ID.
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std::unordered_map<std::string, uint32_t> mLanguageListLookupTable;
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};
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} // namespace android
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#endif // MINIKIN_FONT_LANGUAGE_LIST_CACHE_H
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