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      1 // Copyright 2016 PDFium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
      6 
      7 #ifndef CORE_FXGE_CFX_FACECACHE_H_
      8 #define CORE_FXGE_CFX_FACECACHE_H_
      9 
     10 #include <map>
     11 #include <memory>
     12 #include <tuple>
     13 
     14 #include "core/fxcrt/unowned_ptr.h"
     15 #include "core/fxge/fx_font.h"
     16 #include "core/fxge/fx_freetype.h"
     17 
     18 #if defined _SKIA_SUPPORT_ || _SKIA_SUPPORT_PATHS_
     19 #include "third_party/skia/include/core/SkTypeface.h"
     20 #endif
     21 
     22 class CFX_Font;
     23 class CFX_PathData;
     24 
     25 class CFX_FaceCache {
     26  public:
     27   explicit CFX_FaceCache(FXFT_Face face);
     28   ~CFX_FaceCache();
     29   const CFX_GlyphBitmap* LoadGlyphBitmap(const CFX_Font* pFont,
     30                                          uint32_t glyph_index,
     31                                          bool bFontStyle,
     32                                          const CFX_Matrix* pMatrix,
     33                                          int dest_width,
     34                                          int anti_alias,
     35                                          int& text_flags);
     36   const CFX_PathData* LoadGlyphPath(const CFX_Font* pFont,
     37                                     uint32_t glyph_index,
     38                                     int dest_width);
     39 
     40 #if defined _SKIA_SUPPORT_ || _SKIA_SUPPORT_PATHS_
     41   CFX_TypeFace* GetDeviceCache(const CFX_Font* pFont);
     42 #endif
     43 
     44  private:
     45   using SizeGlyphCache = std::map<uint32_t, std::unique_ptr<CFX_GlyphBitmap>>;
     46   // <glyph_index, width, weight, angle, vertical>
     47   using PathMapKey = std::tuple<uint32_t, int, int, int, bool>;
     48 
     49   std::unique_ptr<CFX_GlyphBitmap> RenderGlyph(const CFX_Font* pFont,
     50                                                uint32_t glyph_index,
     51                                                bool bFontStyle,
     52                                                const CFX_Matrix* pMatrix,
     53                                                int dest_width,
     54                                                int anti_alias);
     55   std::unique_ptr<CFX_GlyphBitmap> RenderGlyph_Nativetext(
     56       const CFX_Font* pFont,
     57       uint32_t glyph_index,
     58       const CFX_Matrix* pMatrix,
     59       int dest_width,
     60       int anti_alias);
     61   CFX_GlyphBitmap* LookUpGlyphBitmap(const CFX_Font* pFont,
     62                                      const CFX_Matrix* pMatrix,
     63                                      const ByteString& FaceGlyphsKey,
     64                                      uint32_t glyph_index,
     65                                      bool bFontStyle,
     66                                      int dest_width,
     67                                      int anti_alias);
     68   void InitPlatform();
     69   void DestroyPlatform();
     70 
     71   FXFT_Face const m_Face;
     72   std::map<ByteString, SizeGlyphCache> m_SizeMap;
     73   std::map<PathMapKey, std::unique_ptr<CFX_PathData>> m_PathMap;
     74 #if defined _SKIA_SUPPORT_ || _SKIA_SUPPORT_PATHS_
     75   sk_sp<SkTypeface> m_pTypeface;
     76 #endif
     77 };
     78 
     79 #endif  //  CORE_FXGE_CFX_FACECACHE_H_
     80