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/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef MINIKIN_FONT_LANGUAGE_LIST_CACHE_H
#define MINIKIN_FONT_LANGUAGE_LIST_CACHE_H
#include <unordered_map>
#include <minikin/FontFamily.h>
#include "FontLanguage.h"
namespace android {
class FontLanguageListCache {
public:
// A special ID for the empty language list.
// This value must be 0 since the empty language list is inserted into mLanguageLists by
// default.
const static uint32_t kEmptyListId = 0;
// Returns language list ID for the given string representation of FontLanguages.
// Caller should acquire a lock before calling the method.
static uint32_t getId(const std::string& languages);
// Caller should acquire a lock before calling the method.
static const FontLanguages& getById(uint32_t id);
private:
FontLanguageListCache() {} // Singleton
~FontLanguageListCache() {}
// Caller should acquire a lock before calling the method.
static FontLanguageListCache* getInstance();
std::vector<FontLanguages> mLanguageLists;
// A map from string representation of the font language list to the ID.
std::unordered_map<std::string, uint32_t> mLanguageListLookupTable;
};
} // namespace android
#endif // MINIKIN_FONT_LANGUAGE_LIST_CACHE_H
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