1 /* 2 * Copyright (c) 2022 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef GLYPHS_CACHE_H 17 #define GLYPHS_CACHE_H 18 19 #include "font/ui_font_header.h" 20 #include "gfx_utils/heap_base.h" 21 22 namespace OHOS { 23 class GlyphsCache : public HeapBase { 24 public: 25 GlyphsCache(); 26 27 GlyphsCache(const GlyphsCache&) = delete; 28 29 GlyphsCache& operator=(const GlyphsCache&) = delete; 30 31 GlyphsCache(const GlyphsCache&&) = delete; 32 33 GlyphsCache& operator=(const GlyphsCache&&) = delete; 34 35 ~GlyphsCache(); 36 37 int8_t CacheInit(); 38 void ClearCacheFlag(); 39 GlyphCacheNode* GetNodeFromCache(uint32_t unicode, uint16_t fontKey, uint16_t cacheType); 40 GlyphCacheNode* GetNodeCacheSpace(uint32_t unicode, uint16_t fontId); 41 42 private: 43 #if (defined(ENABLE_MIX_FONT) && (ENABLE_MIX_FONT == 1)) 44 static constexpr uint8_t FONT_HASH_SHIFT = 3; 45 #else 46 static constexpr uint8_t FONT_HASH_SHIFT = 4; 47 #endif 48 static constexpr uint8_t FONT_HASH_NR = 1 << FONT_HASH_SHIFT; 49 static constexpr uint32_t FONT_HASH_MASK = FONT_HASH_NR - 1; 50 static constexpr uint8_t UNICODE_HASH_SHIFT = 6; 51 static constexpr uint8_t UNICODE_HASH_NR = 1 << UNICODE_HASH_SHIFT; 52 static constexpr uint32_t UNICODE_HASH_MASK = UNICODE_HASH_NR - 1; 53 static constexpr uint8_t NODE_HASH_SHIFT = 4; 54 static constexpr uint8_t NODE_HASH_NR = 1 << NODE_HASH_SHIFT; 55 56 using CacheType = GlyphCacheNode[FONT_HASH_NR][UNICODE_HASH_NR][NODE_HASH_NR]; 57 using CacheState = uint8_t[FONT_HASH_NR][UNICODE_HASH_NR]; 58 59 CacheType* nodeCache_; 60 CacheState* cacheStatus_; 61 bool hasInit_; 62 }; 63 } // namespace OHOS 64 #endif /* GLYPHS_CACHE_H */