cocos-enhance-kit/cocos2d-x/cocos/2d/CCTTFLabelAtlasCache.h
2022-06-25 00:23:03 +08:00

97 lines
2.9 KiB
C++

/****************************************************************************
Copyright (c) 2020 Xiamen Yaji Software Co., Ltd.
http://www.cocos.com
Permission is hereby granted, free of charge, to any person obtaining a copy
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The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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****************************************************************************/
#pragma once
#include "2d/CCFontFreetype.h"
#include "2d/CCFontAtlas.h"
#include <unordered_map>
#include <memory>
#include "base/ccConfig.h"
#if CC_ENABLE_TTF_LABEL_RENDERER
#define CC_TTF_LABELATLAS_ENABLE_GC 1
namespace cocos2d {
class TTFLabelAtlasCache;
struct LabelLayoutInfo;
// font atlas of specific size font
class TTFLabelAtlas {
public:
TTFLabelAtlas(const std::string &, float, LabelLayoutInfo *info);
inline FontAtlas * getFontAtlas() const { return _fontAtlas.get(); }
inline FontFreeType * getTTF() const { return _ttfFont.get(); }
float getFontSize() const { return _fontSize; }
bool init();
private:
std::string _fontName;
float _fontSize = 0.f;
//weak reference
LabelLayoutInfo *_info = nullptr;
std::shared_ptr<FontAtlas> _fontAtlas;
std::shared_ptr<FontFreeType> _ttfFont;
friend class TTFLabelAtlasCache;
};
class TTFLabelAtlasCache {
public:
static TTFLabelAtlasCache* getInstance();
static void destroyInstance();
void reset();
std::shared_ptr<TTFLabelAtlas> load(const std::string &font, float fontSize, LabelLayoutInfo* info);
void unload(TTFLabelAtlas *);
protected:
std::string cacheKeyFor(const std::string &font, int fontSize, LabelLayoutInfo *info);
TTFLabelAtlasCache() {}
private:
#if CC_TTF_LABELATLAS_ENABLE_GC
std::unordered_map< std::string, std::weak_ptr< TTFLabelAtlas>> _cache;
#else
std::unordered_map< std::string, std::shared_ptr< TTFLabelAtals>> _cache;
#endif
};
}
#endif