Remove IFGAS_FontMgr and clean up (the renamed) CFGAS_FontMgr a little.

IFGAS_FontMgr is an interface only for a class only defined on Windows,
plus a class only defined for non-Windows. I'm removing the interface,
renaming the class to have the same name in both cases, and cleaning up
a bit of unused methods.

Review-Url: https://codereview.chromium.org/2494883002

1 files changed, 264 insertions, 0 deletions

diff --git a/xfa/fgas/font/cfgas_fontmgr.h b/xfa/fgas/font/cfgas_fontmgr.h
new file mode 100644
index 0000000000..572be382a8
--- /dev/null
+++ b/xfa/fgas/font/cfgas_fontmgr.h
@@ -0,0 +1,264 @@
+// 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 XFA_FGAS_FONT_CFGAS_FONTMGR_H_
+#define XFA_FGAS_FONT_CFGAS_FONTMGR_H_
+
+#include <vector>
+
+#include "core/fxcrt/fx_ext.h"
+#include "core/fxge/cfx_fontmapper.h"
+#include "core/fxge/fx_freetype.h"
+#include "core/fxge/ifx_systemfontinfo.h"
+#include "third_party/freetype/include/freetype/fttypes.h"
+#include "xfa/fgas/crt/fgas_stream.h"
+#include "xfa/fgas/font/cfgas_fontmgr.h"
+
+#if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
+#include "xfa/fgas/crt/fgas_memory.h"
+#include "xfa/fgas/crt/fgas_utils.h"
+#endif  // _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
+
+#define FX_FONTSTYLE_Normal 0x00
+#define FX_FONTSTYLE_FixedPitch 0x01
+#define FX_FONTSTYLE_Serif 0x02
+#define FX_FONTSTYLE_Symbolic 0x04
+#define FX_FONTSTYLE_Script 0x08
+#define FX_FONTSTYLE_Italic 0x40
+#define FX_FONTSTYLE_Bold 0x40000
+#define FX_FONTSTYLE_BoldItalic (FX_FONTSTYLE_Bold | FX_FONTSTYLE_Italic)
+#define FX_FONTSTYLE_ExactMatch 0x80000000
+
+class CFX_FontSourceEnum_File;
+class CFGAS_GEFont;
+class CXFA_PDFFontMgr;
+class CFGAS_FontMgr;
+
+#if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
+#define FX_FONTMATCHPARA_MatchStyle 0x01
+
+struct FX_FONTMATCHPARAMS {
+  const FX_WCHAR* pwsFamily;
+  uint32_t dwFontStyles;
+  uint32_t dwUSB;
+  uint32_t dwMatchFlags;
+  FX_WCHAR wUnicode;
+  uint16_t wCodePage;
+};
+
+typedef FX_FONTMATCHPARAMS* FX_LPFONTMATCHPARAMS;
+
+struct FX_FONTSIGNATURE {
+  uint32_t fsUsb[4];
+  uint32_t fsCsb[2];
+};
+
+inline bool operator==(const FX_FONTSIGNATURE& left,
+                       const FX_FONTSIGNATURE& right) {
+  return left.fsUsb[0] == right.fsUsb[0] && left.fsUsb[1] == right.fsUsb[1] &&
+         left.fsUsb[2] == right.fsUsb[2] && left.fsUsb[3] == right.fsUsb[3] &&
+         left.fsCsb[0] == right.fsCsb[0] && left.fsCsb[1] == right.fsCsb[1];
+}
+
+struct FX_FONTDESCRIPTOR {
+  FX_WCHAR wsFontFace[32];
+  uint32_t dwFontStyles;
+  uint8_t uCharSet;
+  FX_FONTSIGNATURE FontSignature;
+};
+
+typedef CFX_MassArrayTemplate<FX_FONTDESCRIPTOR> CFX_FontDescriptors;
+
+inline bool operator==(const FX_FONTDESCRIPTOR& left,
+                       const FX_FONTDESCRIPTOR& right) {
+  return left.uCharSet == right.uCharSet &&
+         left.dwFontStyles == right.dwFontStyles &&
+         left.FontSignature == right.FontSignature &&
+         FXSYS_wcscmp(left.wsFontFace, right.wsFontFace) == 0;
+}
+
+typedef void (*FX_LPEnumAllFonts)(CFX_FontDescriptors& fonts,
+                                  const FX_WCHAR* pwsFaceName,
+                                  FX_WCHAR wUnicode);
+
+FX_LPEnumAllFonts FX_GetDefFontEnumerator();
+
+class CFGAS_FontMgr {
+ public:
+  explicit CFGAS_FontMgr(FX_LPEnumAllFonts pEnumerator);
+  ~CFGAS_FontMgr();
+
+  static std::unique_ptr<CFGAS_FontMgr> Create(FX_LPEnumAllFonts pEnumerator);
+
+  CFGAS_GEFont* GetDefFontByCodePage(uint16_t wCodePage,
+                                     uint32_t dwFontStyles,
+                                     const FX_WCHAR* pszFontFamily = nullptr);
+  CFGAS_GEFont* GetDefFontByUnicode(FX_WCHAR wUnicode,
+                                    uint32_t dwFontStyles,
+                                    const FX_WCHAR* pszFontFamily = nullptr);
+  CFGAS_GEFont* LoadFont(const FX_WCHAR* pszFontFamily,
+                         uint32_t dwFontStyles,
+                         uint16_t wCodePage = 0xFFFF);
+  CFGAS_GEFont* LoadFont(const uint8_t* pBuffer, int32_t iLength);
+  CFGAS_GEFont* LoadFont(IFX_Stream* pFontStream,
+                         const FX_WCHAR* pszFontAlias = nullptr,
+                         uint32_t dwFontStyles = 0,
+                         uint16_t wCodePage = 0,
+                         bool bSaveStream = false);
+  CFGAS_GEFont* LoadFont(CFGAS_GEFont* pSrcFont,
+                         uint32_t dwFontStyles,
+                         uint16_t wCodePage = 0xFFFF);
+
+  // TODO(npm): This method is not being used, but probably should be in
+  // destructor
+  void ClearFontCache();
+  void RemoveFont(CFGAS_GEFont* pFont);
+
+ private:
+  void RemoveFont(CFX_MapPtrToPtr& fontMap, CFGAS_GEFont* pFont);
+  FX_FONTDESCRIPTOR const* FindFont(const FX_WCHAR* pszFontFamily,
+                                    uint32_t dwFontStyles,
+                                    uint32_t dwMatchFlags,
+                                    uint16_t wCodePage,
+                                    uint32_t dwUSB = 999,
+                                    FX_WCHAR wUnicode = 0);
+
+  FX_LPEnumAllFonts m_pEnumerator;
+  CFX_FontDescriptors m_FontFaces;
+  CFX_ArrayTemplate<CFGAS_GEFont*> m_Fonts;
+  CFX_MapPtrToPtr m_CPFonts;
+  CFX_MapPtrToPtr m_FamilyFonts;
+  CFX_MapPtrToPtr m_UnicodeFonts;
+  CFX_MapPtrToPtr m_BufferFonts;
+  CFX_MapPtrToPtr m_StreamFonts;
+  CFX_MapPtrToPtr m_DeriveFonts;
+};
+
+#else  // _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
+class CFX_FontDescriptor {
+ public:
+  CFX_FontDescriptor();
+  ~CFX_FontDescriptor();
+
+  int32_t m_nFaceIndex;
+  CFX_WideString m_wsFaceName;
+  CFX_WideStringArray m_wsFamilyNames;
+  uint32_t m_dwFontStyles;
+  uint32_t m_dwUsb[4];
+  uint32_t m_dwCsb[2];
+};
+
+typedef CFX_ArrayTemplate<CFX_FontDescriptor*> CFX_FontDescriptors;
+
+struct FX_FontDescriptorInfo {
+ public:
+  CFX_FontDescriptor* pFont;
+  int32_t nPenalty;
+
+  bool operator>(const FX_FontDescriptorInfo& other) const {
+    return nPenalty > other.nPenalty;
+  }
+  bool operator<(const FX_FontDescriptorInfo& other) const {
+    return nPenalty < other.nPenalty;
+  }
+  bool operator==(const FX_FontDescriptorInfo& other) const {
+    return nPenalty == other.nPenalty;
+  }
+};
+
+typedef CFX_ArrayTemplate<FX_FontDescriptorInfo> CFX_FontDescriptorInfos;
+
+struct FX_HandleParentPath {
+  FX_HandleParentPath() {}
+  FX_HandleParentPath(const FX_HandleParentPath& x) {
+    pFileHandle = x.pFileHandle;
+    bsParentPath = x.bsParentPath;
+  }
+  FX_FileHandle* pFileHandle;
+  CFX_ByteString bsParentPath;
+};
+
+class CFX_FontSourceEnum_File {
+ public:
+  CFX_FontSourceEnum_File();
+  ~CFX_FontSourceEnum_File();
+
+  FX_POSITION GetStartPosition();
+  IFX_FileAccess* GetNext(FX_POSITION& pos);
+
+ private:
+  CFX_ByteString GetNextFile();
+
+  CFX_WideString m_wsNext;
+  CFX_ObjectArray<FX_HandleParentPath> m_FolderQueue;
+  CFX_ByteStringArray m_FolderPaths;
+};
+
+class CFGAS_FontMgr {
+ public:
+  explicit CFGAS_FontMgr(CFX_FontSourceEnum_File* pFontEnum);
+  ~CFGAS_FontMgr();
+  static std::unique_ptr<CFGAS_FontMgr> Create(
+      CFX_FontSourceEnum_File* pFontEnum);
+
+  CFGAS_GEFont* GetFontByCodePage(uint16_t wCodePage,
+                                  uint32_t dwFontStyles,
+                                  const FX_WCHAR* pszFontFamily);
+  CFGAS_GEFont* GetFontByUnicode(FX_WCHAR wUnicode,
+                                 uint32_t dwFontStyles,
+                                 const FX_WCHAR* pszFontFamily);
+  void ClearFontCache();
+  void RemoveFont(CFGAS_GEFont* pFont);
+
+  CFGAS_GEFont* LoadFont(const CFX_WideString& wsFaceName,
+                         int32_t iFaceIndex,
+                         int32_t* pFaceCount);
+  inline CFGAS_GEFont* LoadFont(const FX_WCHAR* pszFontFamily,
+                                uint32_t dwFontStyles,
+                                uint16_t wCodePage) {
+    return GetFontByCodePage(wCodePage, dwFontStyles, pszFontFamily);
+  }
+  bool EnumFonts();
+  bool EnumFontsFromFontMapper();
+  bool EnumFontsFromFiles();
+
+ private:
+  void RegisterFace(FXFT_Face pFace, const CFX_WideString* pFaceName);
+  void RegisterFaces(IFX_SeekableReadStream* pFontStream,
+                     const CFX_WideString* pFaceName);
+  void GetNames(const uint8_t* name_table, CFX_WideStringArray& Names);
+  std::vector<uint16_t> GetCharsets(FXFT_Face pFace) const;
+  void GetUSBCSB(FXFT_Face pFace, uint32_t* USB, uint32_t* CSB);
+  uint32_t GetFlags(FXFT_Face pFace);
+  bool VerifyUnicode(CFX_FontDescriptor* pDesc, FX_WCHAR wcUnicode);
+  bool VerifyUnicode(CFGAS_GEFont* pFont, FX_WCHAR wcUnicode);
+  int32_t IsPartName(const CFX_WideString& Name1, const CFX_WideString& Name2);
+  int32_t MatchFonts(CFX_FontDescriptorInfos& MatchedFonts,
+                     uint16_t wCodePage,
+                     uint32_t dwFontStyles,
+                     const CFX_WideString& FontName,
+                     FX_WCHAR wcUnicode = 0xFFFE);
+  int32_t CalcPenalty(CFX_FontDescriptor* pInstalled,
+                      uint16_t wCodePage,
+                      uint32_t dwFontStyles,
+                      const CFX_WideString& FontName,
+                      FX_WCHAR wcUnicode = 0xFFFE);
+  FXFT_Face LoadFace(IFX_SeekableReadStream* pFontStream, int32_t iFaceIndex);
+  IFX_SeekableReadStream* CreateFontStream(CFX_FontMapper* pFontMapper,
+                                           IFX_SystemFontInfo* pSystemFontInfo,
+                                           uint32_t index);
+  IFX_SeekableReadStream* CreateFontStream(const CFX_ByteString& bsFaceName);
+
+  CFX_FontDescriptors m_InstalledFonts;
+  CFX_MapPtrTemplate<uint32_t, CFX_FontDescriptorInfos*> m_Hash2CandidateList;
+  CFX_MapPtrTemplate<uint32_t, CFX_ArrayTemplate<CFGAS_GEFont*>*> m_Hash2Fonts;
+  CFX_MapPtrTemplate<CFGAS_GEFont*, IFX_SeekableReadStream*> m_IFXFont2FileRead;
+  CFX_MapPtrTemplate<FX_WCHAR, CFGAS_GEFont*> m_FailedUnicodes2Nullptr;
+  CFX_FontSourceEnum_File* const m_pFontSource;
+};
+#endif
+
+#endif  // XFA_FGAS_FONT_CFGAS_FONTMGR_H_