Move core/fpdfapi/fpdf_font to core/fpdfapi/font

BUG=pdfium:603

Review-Url: https://codereview.chromium.org/2392773003

1 files changed, 204 insertions, 0 deletions

diff --git a/core/fpdfapi/font/font_int.h b/core/fpdfapi/font/font_int.h
new file mode 100644
index 0000000000..10c2dcada4
--- /dev/null
+++ b/core/fpdfapi/font/font_int.h
@@ -0,0 +1,204 @@
+// 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_FPDFAPI_FONT_FONT_INT_H_
+#define CORE_FPDFAPI_FONT_FONT_INT_H_
+
+#include <map>
+#include <memory>
+
+#include "core/fpdfapi/font/cpdf_cidfont.h"
+#include "core/fxcrt/fx_basic.h"
+
+class CPDF_CID2UnicodeMap;
+class CPDF_CMap;
+class CPDF_Font;
+class CPDF_Stream;
+
+using FXFT_Library = void*;
+
+int TT2PDF(int m, FXFT_Face face);
+bool FT_UseTTCharmap(FXFT_Face face, int platform_id, int encoding_id);
+CIDSet CharsetFromOrdering(const CFX_ByteStringC& ordering);
+
+class CPDF_CMapManager {
+ public:
+  CPDF_CMapManager();
+  ~CPDF_CMapManager();
+
+  CPDF_CMap* GetPredefinedCMap(const CFX_ByteString& name, bool bPromptCJK);
+  CPDF_CID2UnicodeMap* GetCID2UnicodeMap(CIDSet charset, bool bPromptCJK);
+
+ private:
+  CPDF_CMap* LoadPredefinedCMap(const CFX_ByteString& name, bool bPromptCJK);
+  CPDF_CID2UnicodeMap* LoadCID2UnicodeMap(CIDSet charset, bool bPromptCJK);
+
+  std::map<CFX_ByteString, CPDF_CMap*> m_CMaps;
+  CPDF_CID2UnicodeMap* m_CID2UnicodeMaps[6];
+};
+
+class CFX_StockFontArray {
+ public:
+  CFX_StockFontArray();
+  ~CFX_StockFontArray();
+
+  // Takes ownership of |pFont|, returns unowned pointer to it.
+  CPDF_Font* SetFont(uint32_t index, std::unique_ptr<CPDF_Font> pFont);
+  CPDF_Font* GetFont(uint32_t index) const;
+
+ private:
+  std::unique_ptr<CPDF_Font> m_StockFonts[14];
+};
+
+class CPDF_FontGlobals {
+ public:
+  CPDF_FontGlobals();
+  ~CPDF_FontGlobals();
+
+  void Clear(CPDF_Document* pDoc);
+  CPDF_Font* Find(CPDF_Document* pDoc, uint32_t index);
+
+  // Takes ownership of |pFont|, returns unowned pointer to it.
+  CPDF_Font* Set(CPDF_Document* key,
+                 uint32_t index,
+                 std::unique_ptr<CPDF_Font> pFont);
+
+  CPDF_CMapManager m_CMapManager;
+  struct {
+    const struct FXCMAP_CMap* m_pMapList;
+    uint32_t m_Count;
+  } m_EmbeddedCharsets[CIDSET_NUM_SETS];
+  struct {
+    const uint16_t* m_pMap;
+    uint32_t m_Count;
+  } m_EmbeddedToUnicodes[CIDSET_NUM_SETS];
+
+ private:
+  std::map<CPDF_Document*, std::unique_ptr<CFX_StockFontArray>> m_StockMap;
+};
+
+struct CMap_CodeRange {
+  int m_CharSize;
+  uint8_t m_Lower[4];
+  uint8_t m_Upper[4];
+};
+
+class CPDF_CMapParser {
+ public:
+  CPDF_CMapParser();
+  ~CPDF_CMapParser();
+  void Initialize(CPDF_CMap* pMap);
+  void ParseWord(const CFX_ByteStringC& str);
+  CFX_BinaryBuf m_AddMaps;
+
+ private:
+  friend class fpdf_font_cid_CMap_GetCode_Test;
+  friend class fpdf_font_cid_CMap_GetCodeRange_Test;
+
+  static uint32_t CMap_GetCode(const CFX_ByteStringC& word);
+  static bool CMap_GetCodeRange(CMap_CodeRange& range,
+                                const CFX_ByteStringC& first,
+                                const CFX_ByteStringC& second);
+
+  CPDF_CMap* m_pCMap;
+  int m_Status;
+  int m_CodeSeq;
+  uint32_t m_CodePoints[4];
+  CFX_ArrayTemplate<CMap_CodeRange> m_CodeRanges;
+  CFX_ByteString m_LastWord;
+};
+
+enum CIDCoding : uint8_t {
+  CIDCODING_UNKNOWN = 0,
+  CIDCODING_GB,
+  CIDCODING_BIG5,
+  CIDCODING_JIS,
+  CIDCODING_KOREA,
+  CIDCODING_UCS2,
+  CIDCODING_CID,
+  CIDCODING_UTF16,
+};
+
+class CPDF_CMap {
+ public:
+  enum CodingScheme : uint8_t {
+    OneByte,
+    TwoBytes,
+    MixedTwoBytes,
+    MixedFourBytes
+  };
+
+  CPDF_CMap();
+  ~CPDF_CMap();
+
+  void LoadPredefined(CPDF_CMapManager* pMgr,
+                      const CFX_ByteString& name,
+                      bool bPromptCJK);
+  void LoadEmbedded(const uint8_t* pData, uint32_t dwSize);
+
+  bool IsLoaded() const;
+  bool IsVertWriting() const;
+  uint16_t CIDFromCharCode(uint32_t charcode) const;
+  int GetCharSize(uint32_t charcode) const;
+  uint32_t GetNextChar(const FX_CHAR* pString, int nStrLen, int& offset) const;
+  int CountChar(const FX_CHAR* pString, int size) const;
+  int AppendChar(FX_CHAR* str, uint32_t charcode) const;
+
+ private:
+  friend class CPDF_CMapParser;
+  friend class CPDF_CIDFont;
+
+  CFX_ByteString m_PredefinedCMap;
+  bool m_bVertical;
+  CIDSet m_Charset;
+  int m_Coding;
+  CodingScheme m_CodingScheme;
+  int m_nCodeRanges;
+  uint8_t* m_pLeadingBytes;
+  uint16_t* m_pMapping;
+  uint8_t* m_pAddMapping;
+  bool m_bLoaded;
+  const FXCMAP_CMap* m_pEmbedMap;
+};
+
+class CPDF_CID2UnicodeMap {
+ public:
+  CPDF_CID2UnicodeMap();
+  ~CPDF_CID2UnicodeMap();
+
+  bool IsLoaded();
+  void Load(CPDF_CMapManager* pMgr, CIDSet charset, bool bPromptCJK);
+  FX_WCHAR UnicodeFromCID(uint16_t CID);
+
+ private:
+  CIDSet m_Charset;
+  const uint16_t* m_pEmbeddedMap;
+  uint32_t m_EmbeddedCount;
+};
+
+class CPDF_ToUnicodeMap {
+ public:
+  CPDF_ToUnicodeMap();
+  ~CPDF_ToUnicodeMap();
+
+  void Load(CPDF_Stream* pStream);
+
+  CFX_WideString Lookup(uint32_t charcode) const;
+  uint32_t ReverseLookup(FX_WCHAR unicode) const;
+
+ private:
+  friend class fpdf_font_StringToCode_Test;
+  friend class fpdf_font_StringToWideString_Test;
+
+  static uint32_t StringToCode(const CFX_ByteStringC& str);
+  static CFX_WideString StringToWideString(const CFX_ByteStringC& str);
+
+  std::map<uint32_t, uint32_t> m_Map;
+  CPDF_CID2UnicodeMap* m_pBaseMap;
+  CFX_WideTextBuf m_MultiCharBuf;
+};
+
+#endif  // CORE_FPDFAPI_FONT_FONT_INT_H_