Cleanup CFX_UnicodeEncoding and remove IFX_FontEncoding.

R=tsepez@chromium.org

Review URL: https://codereview.chromium.org/1296753003 .

4 files changed, 34 insertions, 68 deletions

diff --git a/core/include/fxge/fx_font.h b/core/include/fxge/fx_font.h
index 8e0f5a1615..d9b557a87b 100644
--- a/core/include/fxge/fx_font.h
+++ b/core/include/fxge/fx_font.h
@@ -134,18 +134,18 @@ class CFX_Font {
 #define ENCODING_INTERNAL 0
 #define ENCODING_UNICODE 1
 
-class IFX_FontEncoding {
+class CFX_UnicodeEncoding {
  public:
-  virtual ~IFX_FontEncoding() {}
+  explicit CFX_UnicodeEncoding(CFX_Font* pFont);
+  ~CFX_UnicodeEncoding();
 
-  virtual FX_DWORD GlyphFromCharCode(FX_DWORD charcode) = 0;
+  FX_DWORD GlyphFromCharCode(FX_DWORD charcode);
 
-  virtual CFX_WideString UnicodeFromCharCode(FX_DWORD charcode) const = 0;
-
-  virtual FX_DWORD CharCodeFromUnicode(FX_WCHAR Unicode) const = 0;
+ private:
+  // Unowned, not nullptr.
+  CFX_Font* m_pFont;
 };
 
-IFX_FontEncoding* FXGE_CreateUnicodeEncoding(CFX_Font* pFont);
 #define FXFONT_SUBST_MM 0x01
 #define FXFONT_SUBST_GLYPHPATH 0x04
 #define FXFONT_SUBST_CLEARTYPE 0x08
diff --git a/core/src/fpdfapi/fpdf_edit/fpdf_edit_doc.cpp b/core/src/fpdfapi/fpdf_edit/fpdf_edit_doc.cpp
index fa21ac1058..ed055459d4 100644
--- a/core/src/fpdfapi/fpdf_edit/fpdf_edit_doc.cpp
+++ b/core/src/fpdfapi/fpdf_edit/fpdf_edit_doc.cpp
@@ -426,6 +426,7 @@ CPDF_Font* CPDF_Document::AddWindowsFont(LOGFONTA* pLogFont,
   return LoadFont(pBaseDict);
 }
 #endif
+
 #if (_FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_)
 uint32_t FX_GetLangHashCode(const FX_CHAR* pStr) {
   FXSYS_assert(pStr != NULL);
@@ -791,9 +792,10 @@ CPDF_Font* CPDF_Document::AddMacFont(CTFontRef pFont,
   CFRelease(languages);
   return LoadFont(pBaseDict);
 }
-#endif
+#endif  // (_FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_)
+
 static void _InsertWidthArray1(CFX_Font* pFont,
-                               IFX_FontEncoding* pEncoding,
+                               CFX_UnicodeEncoding* pEncoding,
                                FX_WCHAR start,
                                FX_WCHAR end,
                                CPDF_Array* pWidthArray) {
@@ -821,6 +823,7 @@ static void _InsertWidthArray1(CFX_Font* pFont,
   }
   FX_Free(widths);
 }
+
 CPDF_Font* CPDF_Document::AddFont(CFX_Font* pFont, int charset, FX_BOOL bVert) {
   if (pFont == NULL) {
     return NULL;
@@ -843,7 +846,8 @@ CPDF_Font* CPDF_Document::AddFont(CFX_Font* pFont, int charset, FX_BOOL bVert) {
   }
   CPDF_Dictionary* pBaseDict = new CPDF_Dictionary;
   pBaseDict->SetAtName("Type", "Font");
-  IFX_FontEncoding* pEncoding = FXGE_CreateUnicodeEncoding(pFont);
+  nonstd::unique_ptr<CFX_UnicodeEncoding> pEncoding(
+      new CFX_UnicodeEncoding(pFont));
   CPDF_Dictionary* pFontDict = pBaseDict;
   if (!bCJK) {
     CPDF_Array* pWidths = new CPDF_Array;
@@ -921,35 +925,35 @@ CPDF_Font* CPDF_Document::AddFont(CFX_Font* pFont, int charset, FX_BOOL bVert) {
         ordering = "CNS1";
         supplement = 4;
         pWidthArray->AddInteger(1);
-        _InsertWidthArray1(pFont, pEncoding, 0x20, 0x7e, pWidthArray);
+        _InsertWidthArray1(pFont, pEncoding.get(), 0x20, 0x7e, pWidthArray);
         break;
       case FXFONT_GB2312_CHARSET:
         cmap = bVert ? "GBK-EUC-V" : "GBK-EUC-H";
         ordering = "GB1", supplement = 2;
         pWidthArray->AddInteger(7716);
-        _InsertWidthArray1(pFont, pEncoding, 0x20, 0x20, pWidthArray);
+        _InsertWidthArray1(pFont, pEncoding.get(), 0x20, 0x20, pWidthArray);
         pWidthArray->AddInteger(814);
-        _InsertWidthArray1(pFont, pEncoding, 0x21, 0x7e, pWidthArray);
+        _InsertWidthArray1(pFont, pEncoding.get(), 0x21, 0x7e, pWidthArray);
         break;
       case FXFONT_HANGEUL_CHARSET:
         cmap = bVert ? "KSCms-UHC-V" : "KSCms-UHC-H";
         ordering = "Korea1";
         supplement = 2;
         pWidthArray->AddInteger(1);
-        _InsertWidthArray1(pFont, pEncoding, 0x20, 0x7e, pWidthArray);
+        _InsertWidthArray1(pFont, pEncoding.get(), 0x20, 0x7e, pWidthArray);
         break;
       case FXFONT_SHIFTJIS_CHARSET:
         cmap = bVert ? "90ms-RKSJ-V" : "90ms-RKSJ-H";
         ordering = "Japan1";
         supplement = 5;
         pWidthArray->AddInteger(231);
-        _InsertWidthArray1(pFont, pEncoding, 0x20, 0x7d, pWidthArray);
+        _InsertWidthArray1(pFont, pEncoding.get(), 0x20, 0x7d, pWidthArray);
         pWidthArray->AddInteger(326);
-        _InsertWidthArray1(pFont, pEncoding, 0xa0, 0xa0, pWidthArray);
+        _InsertWidthArray1(pFont, pEncoding.get(), 0xa0, 0xa0, pWidthArray);
         pWidthArray->AddInteger(327);
-        _InsertWidthArray1(pFont, pEncoding, 0xa1, 0xdf, pWidthArray);
+        _InsertWidthArray1(pFont, pEncoding.get(), 0xa1, 0xdf, pWidthArray);
         pWidthArray->AddInteger(631);
-        _InsertWidthArray1(pFont, pEncoding, 0x7e, 0x7e, pWidthArray);
+        _InsertWidthArray1(pFont, pEncoding.get(), 0x7e, 0x7e, pWidthArray);
         break;
     }
     pBaseDict->SetAtName("Subtype", "Type0");
@@ -1003,7 +1007,6 @@ CPDF_Font* CPDF_Document::AddFont(CFX_Font* pFont, int charset, FX_BOOL bVert) {
       }
     }
   }
-  delete pEncoding;
   pFontDesc->SetAtInteger("StemV", nStemV);
   AddIndirectObject(pFontDesc);
   pFontDict->SetAtReference("FontDescriptor", this, pFontDesc);
diff --git a/core/src/fxge/ge/fx_ge_font.cpp b/core/src/fxge/ge/fx_ge_font.cpp
index 8be177ed14..d72adc36bf 100644
--- a/core/src/fxge/ge/fx_ge_font.cpp
+++ b/core/src/fxge/ge/fx_ge_font.cpp
@@ -379,48 +379,27 @@ int CFX_Font::GetULthickness() {
                             FXFT_Get_Face_UnderLineThickness(m_Face));
   return thickness;
 }
-CFX_UnicodeEncoding::CFX_UnicodeEncoding(CFX_Font* pFont) {
-  m_pFont = pFont;
+
+CFX_UnicodeEncoding::CFX_UnicodeEncoding(CFX_Font* pFont) : m_pFont(pFont) {
+}
+
+CFX_UnicodeEncoding::~CFX_UnicodeEncoding() {
 }
+
 FX_DWORD CFX_UnicodeEncoding::GlyphFromCharCode(FX_DWORD charcode) {
   FXFT_Face face = m_pFont->GetFace();
-  if (!face) {
+  if (!face)
     return charcode;
-  }
-  if (FXFT_Select_Charmap(face, FXFT_ENCODING_UNICODE) == 0) {
+
+  if (FXFT_Select_Charmap(face, FXFT_ENCODING_UNICODE) == 0)
     return FXFT_Get_Char_Index(face, charcode);
-  }
+
   if (m_pFont->m_pSubstFont && m_pFont->m_pSubstFont->m_Charset == 2) {
     FX_DWORD index = 0;
-    if (FXFT_Select_Charmap(face, FXFT_ENCODING_MS_SYMBOL) == 0) {
+    if (FXFT_Select_Charmap(face, FXFT_ENCODING_MS_SYMBOL) == 0)
       index = FXFT_Get_Char_Index(face, charcode);
-    }
-    if (!index && !FXFT_Select_Charmap(face, FXFT_ENCODING_APPLE_ROMAN)) {
+    if (!index && !FXFT_Select_Charmap(face, FXFT_ENCODING_APPLE_ROMAN))
       return FXFT_Get_Char_Index(face, charcode);
-    }
   }
   return charcode;
 }
-FX_DWORD CFX_UnicodeEncoding::GlyphFromCharCodeEx(FX_DWORD charcode,
-                                                  int encoding) {
-  FXFT_Face face = m_pFont->GetFace();
-  if (!face) {
-    return charcode;
-  }
-  if (encoding == ENCODING_UNICODE) {
-    return GlyphFromCharCode(charcode);
-  }
-  int nmaps = FXFT_Get_Face_CharmapCount(m_pFont->m_Face);
-  int i = 0;
-  while (i < nmaps) {
-    int encoding = FXFT_Get_Charmap_Encoding(FXFT_Get_Face_Charmaps(face)[i++]);
-    if (encoding != FXFT_ENCODING_UNICODE) {
-      FXFT_Select_Charmap(face, encoding);
-      break;
-    }
-  }
-  return FXFT_Get_Char_Index(face, charcode);
-}
-IFX_FontEncoding* FXGE_CreateUnicodeEncoding(CFX_Font* pFont) {
-  return new CFX_UnicodeEncoding(pFont);
-}
diff --git a/core/src/fxge/ge/text_int.h b/core/src/fxge/ge/text_int.h
index e9f81b3ca7..61f47eac9c 100644
--- a/core/src/fxge/ge/text_int.h
+++ b/core/src/fxge/ge/text_int.h
@@ -41,23 +41,7 @@ class CTTFontDesc {
   uint8_t* m_pFontData;
   int m_RefCount;
 };
-class CFX_UnicodeEncoding : public IFX_FontEncoding {
- public:
-  CFX_UnicodeEncoding(CFX_Font* pFont);
-  virtual FX_DWORD GlyphFromCharCodeEx(FX_DWORD charcode,
-                                       int encoding = ENCODING_UNICODE);
 
- private:
-  CFX_Font* m_pFont;
-  virtual FX_DWORD GlyphFromCharCode(FX_DWORD charcode);
-  virtual CFX_WideString UnicodeFromCharCode(FX_DWORD charcode) const {
-    return CFX_WideString((FX_WCHAR)charcode);
-  }
-  virtual FX_DWORD CharCodeFromUnicode(FX_WCHAR Unicode) const {
-    return Unicode;
-  }
-  virtual FX_BOOL IsUnicodeCompatible() const { return TRUE; }
-};
 #define CHARSET_FLAG_ANSI 1
 #define CHARSET_FLAG_SYMBOL 2
 #define CHARSET_FLAG_SHIFTJIS 4