Move CFX_FaceCache to its own file

Moved ScopedFontTransform from fx_ge_text namespace to fx_font
Moved some arrays used by both CFX_Font and CFX_FaceCache from fx_ge_text to
inside CFX_Font class

Review-Url: https://codereview.chromium.org/2263623002

3 files changed, 84 insertions, 50 deletions

diff --git a/core/fxge/include/cfx_facecache.h b/core/fxge/include/cfx_facecache.h
new file mode 100644
index 0000000000..6e437b49c3
--- /dev/null
+++ b/core/fxge/include/cfx_facecache.h
@@ -0,0 +1,64 @@
+// Copyright 2016 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_FXGE_INCLUDE_CFX_FACECACHE_H_
+#define CORE_FXGE_INCLUDE_CFX_FACECACHE_H_
+
+#include <map>
+
+#include "core/fxge/include/fx_font.h"
+#include "core/fxge/include/fx_freetype.h"
+
+class CFX_FaceCache {
+ public:
+  explicit CFX_FaceCache(FXFT_Face face);
+  ~CFX_FaceCache();
+  const CFX_GlyphBitmap* LoadGlyphBitmap(CFX_Font* pFont,
+                                         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,
+                                     const CFX_ByteString& 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, std::unique_ptr<CFX_SizeGlyphCache>> m_SizeMap;
+  std::map<uint32_t, std::unique_ptr<CFX_PathData>> m_PathMap;
+#ifdef _SKIA_SUPPORT_
+  CFX_TypeFace* m_pTypeface;
+#endif
+};
+
+#endif  //  CORE_FXGE_INCLUDE_CFX_FACECACHE_H_
diff --git a/core/fxge/include/cfx_fontcache.h b/core/fxge/include/cfx_fontcache.h
index 3aee20755d..d4a4dddaa5 100644
--- a/core/fxge/include/cfx_fontcache.h
+++ b/core/fxge/include/cfx_fontcache.h
@@ -13,6 +13,8 @@
 #include "core/fxge/include/fx_font.h"
 #include "core/fxge/include/fx_freetype.h"
 
+class CFX_FaceCache;
+
 class CFX_FontCache {
  public:
   CFX_FontCache();
diff --git a/core/fxge/include/fx_font.h b/core/fxge/include/fx_font.h
index e6ffc6be4b..28c51b131c 100644
--- a/core/fxge/include/fx_font.h
+++ b/core/fxge/include/fx_font.h
@@ -74,6 +74,17 @@ using CFX_TypeFace = SkTypeface;
 #define GET_TT_LONG(w) \
   (uint32_t)(((w)[0] << 24) | ((w)[1] << 16) | ((w)[2] << 8) | (w)[3])
 
+// Sets the given transform on the font, and resets it to the identity when it
+// goes out of scope.
+class ScopedFontTransform {
+ public:
+  ScopedFontTransform(FT_Face face, FXFT_Matrix* matrix);
+  ~ScopedFontTransform();
+
+ private:
+  FT_Face m_Face;
+};
+
 class CFX_Font {
  public:
   CFX_Font();
@@ -132,6 +143,13 @@ class CFX_Font {
   uint32_t GetSize() const { return m_dwSize; }
   void AdjustMMParams(int glyph_index, int width, int weight);
 
+  static const size_t kAngleSkewArraySize = 30;
+  static const char s_AngleSkew[kAngleSkewArraySize];
+  static const size_t kWeightPowArraySize = 100;
+  static const uint8_t s_WeightPow[kWeightPowArraySize];
+  static const uint8_t s_WeightPow_11[kWeightPowArraySize];
+  static const uint8_t s_WeightPow_SHIFTJIS[kWeightPowArraySize];
+
 #ifdef PDF_ENABLE_XFA
  protected:
   CFX_BinaryBuf m_OtfFontData;
@@ -243,56 +261,6 @@ class CFX_GlyphBitmap {
   CFX_DIBitmap m_Bitmap;
 };
 
-class CFX_FaceCache {
- public:
-  explicit CFX_FaceCache(FXFT_Face face);
-  ~CFX_FaceCache();
-  const CFX_GlyphBitmap* LoadGlyphBitmap(CFX_Font* pFont,
-                                         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,
-                                     const CFX_ByteString& 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;