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