Support the device font cache

core/include/fxge/fx_font.h

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #ifndef CORE_INCLUDE_FXGE_FX_FONT_H_
 #define CORE_INCLUDE_FXGE_FX_FONT_H_
 
 #include <map>
 #include <memory>
 #include <vector>
 
 #include "core/fxcrt/include/fx_system.h"
 #include "core/include/fxge/fx_dib.h"
 #include "core/include/fxge/fx_freetype.h"
 
 typedef struct FT_FaceRec_* FXFT_Face;
 typedef void* FXFT_Library;
 
 class CFX_FaceCache;
 class CFX_FontFaceInfo;
 class CFX_FontMapper;
 class CFX_PathData;
 class CFX_SizeGlyphCache;
 class CFX_SubstFont;
 class CTTFontDesc;
 class IFX_SystemFontInfo;
 
+#ifdef _SKIA_SUPPORT_
+class SkTypeface;
+
+using CFX_TypeFace = SkTypeface;
+#endif
+
 #define FXFONT_FIXED_PITCH 0x01
 #define FXFONT_SERIF 0x02
 #define FXFONT_SYMBOLIC 0x04
 #define FXFONT_SCRIPT 0x08
 #define FXFONT_ITALIC 0x40
 #define FXFONT_BOLD 0x40000
 #define FXFONT_USEEXTERNATTR 0x80000
 #define FXFONT_CIDFONT 0x100000
 #ifdef PDF_ENABLE_XFA
 #define FXFONT_EXACTMATCH 0x80000000
@@ skipping 405 matching lines @@
   uint32_t m_nCount;
 };
 
 class CFX_FontCache {
  public:
   CFX_FontCache();
   ~CFX_FontCache();
   CFX_FaceCache* GetCachedFace(CFX_Font* pFont);
   void ReleaseCachedFace(CFX_Font* pFont);
   void FreeCache(FX_BOOL bRelease = FALSE);
+#ifdef _SKIA_SUPPORT_
+  CFX_TypeFace* GetDeviceCache(CFX_Font* pFont);
+#endif
 
  private:
   using CFX_FTCacheMap = std::map<FXFT_Face, CFX_CountedFaceCache*>;
   CFX_FTCacheMap m_FTFaceMap;
   CFX_FTCacheMap m_ExtFaceMap;
 };
 
 class CFX_AutoFontCache {
  public:
   CFX_AutoFontCache(CFX_FontCache* pFontCache, CFX_Font* pFont)
@@ skipping 18 matching lines @@
                                          uint32_t glyph_index,
                                          FX_BOOL bFontStyle,
                                          const CFX_Matrix* pMatrix,
                                          int dest_width,
                                          int anti_alias,
                                          int& text_flags);
   const CFX_PathData* LoadGlyphPath(CFX_Font* pFont,
                                     uint32_t glyph_index,
                                     int dest_width);
 
+#ifdef _SKIA_SUPPORT_
+  CFX_TypeFace* GetDeviceCache(CFX_Font* pFont);
+#endif
+
  private:
   CFX_GlyphBitmap* RenderGlyph(CFX_Font* pFont,
                                uint32_t glyph_index,
                                FX_BOOL bFontStyle,
                                const CFX_Matrix* pMatrix,
                                int dest_width,
                                int anti_alias);
   CFX_GlyphBitmap* RenderGlyph_Nativetext(CFX_Font* pFont,
                                           uint32_t glyph_index,
                                           const CFX_Matrix* pMatrix,
                                           int dest_width,
                                           int anti_alias);
   CFX_GlyphBitmap* LookUpGlyphBitmap(CFX_Font* pFont,
                                      const CFX_Matrix* pMatrix,
                                      CFX_ByteStringC& FaceGlyphsKey,
                                      uint32_t glyph_index,
                                      FX_BOOL bFontStyle,
                                      int dest_width,
                                      int anti_alias);
   void InitPlatform();
   void DestroyPlatform();
 
   FXFT_Face const m_Face;
   std::map<CFX_ByteString, CFX_SizeGlyphCache*> m_SizeMap;
   std::map<uint32_t, CFX_PathData*> m_PathMap;
   CFX_DIBitmap* m_pBitmap;
+#ifdef _SKIA_SUPPORT_
+  CFX_TypeFace* m_pTypeface;
+#endif
 };
 
 struct FXTEXT_GLYPHPOS {
   const CFX_GlyphBitmap* m_pGlyph;
   int m_OriginX;
   int m_OriginY;
   FX_FLOAT m_fOriginX;
   FX_FLOAT m_fOriginY;
 };
 
@@ skipping 12 matching lines @@
   virtual ~IFX_GSUBTable() {}
 };
 
 CFX_ByteString GetNameFromTT(const uint8_t* name_table,
                              uint32_t name_table_size,
                              uint32_t name);
 
 int PDF_GetStandardFontName(CFX_ByteString* name);
 
 #endif  // CORE_INCLUDE_FXGE_FX_FONT_H_