flutter_flutter/libs/minikin/FontLanguageListCache.h
Seigo Nonaka 14e2d136aa Always use minikin namespace.
Here is a new policy of the namespace of minikin.
- All components should be in minikin namespace.
- All tests are also in minikin namespace and no anonymous namespace.

Bug: 29233740
Change-Id: I71a8a35049bb8d624f7a78797231e90fed1e2b8c
2016-06-11 00:11:17 +09:00

57 lines
1.8 KiB
C++

/*
* 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 minikin {
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 minikin
#endif // MINIKIN_FONT_LANGUAGE_LIST_CACHE_H