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// 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_FXGE_INCLUDE_FX_FONT_H_
#define CORE_FXGE_INCLUDE_FX_FONT_H_
#include <map>
#include <memory>
#include <vector>
#include "core/fxcrt/include/fx_system.h"
#include "core/fxge/include/fx_dib.h"
#include "core/fxge/include/fx_freetype.h"
typedef struct FT_FaceRec_* FXFT_Face;
typedef void* FXFT_Library;
class CFX_FaceCache;
class CFX_PathData;
class CFX_SizeGlyphCache;
class CFX_SubstFont;
class CTTFontDesc;
#ifdef _SKIA_SUPPORT_
class SkTypeface;
using CFX_TypeFace = SkTypeface;
#endif
#define FXFONT_FIXED_PITCH 0x01
#define FXFONT_SERIF 0x02
#define FXFONT_SYMBOLIC 0x04
#define FXFONT_SCRIPT 0x08
#define FXFONT_ITALIC 0x40
#define FXFONT_BOLD 0x40000
#define FXFONT_USEEXTERNATTR 0x80000
#define FXFONT_CIDFONT 0x100000
#ifdef PDF_ENABLE_XFA
#define FXFONT_EXACTMATCH 0x80000000
#endif // PDF_ENABLE_XFA
#define FXFONT_ANSI_CHARSET 0
#define FXFONT_DEFAULT_CHARSET 1
#define FXFONT_SYMBOL_CHARSET 2
#define FXFONT_SHIFTJIS_CHARSET 128
#define FXFONT_HANGEUL_CHARSET 129
#define FXFONT_GB2312_CHARSET 134
#define FXFONT_CHINESEBIG5_CHARSET 136
#define FXFONT_THAI_CHARSET 222
#define FXFONT_EASTEUROPE_CHARSET 238
#define FXFONT_RUSSIAN_CHARSET 204
#define FXFONT_GREEK_CHARSET 161
#define FXFONT_TURKISH_CHARSET 162
#define FXFONT_HEBREW_CHARSET 177
#define FXFONT_ARABIC_CHARSET 178
#define FXFONT_BALTIC_CHARSET 186
#define FXFONT_FF_FIXEDPITCH 1
#define FXFONT_FF_ROMAN (1 << 4)
#define FXFONT_FF_SCRIPT (4 << 4)
#define FXFONT_FW_NORMAL 400
#define FXFONT_FW_BOLD 700
#define CHARSET_FLAG_ANSI 1
#define CHARSET_FLAG_SYMBOL 2
#define CHARSET_FLAG_SHIFTJIS 4
#define CHARSET_FLAG_BIG5 8
#define CHARSET_FLAG_GB 16
#define CHARSET_FLAG_KOREAN 32
#define GET_TT_SHORT(w) (uint16_t)(((w)[0] << 8) | (w)[1])
#define GET_TT_LONG(w) \
(uint32_t)(((w)[0] << 24) | ((w)[1] << 16) | ((w)[2] << 8) | (w)[3])
class CFX_Font {
public:
CFX_Font();
~CFX_Font();
void LoadSubst(const CFX_ByteString& face_name,
FX_BOOL bTrueType,
uint32_t flags,
int weight,
int italic_angle,
int CharsetCP,
FX_BOOL bVertical = FALSE);
FX_BOOL LoadEmbedded(const uint8_t* data, uint32_t size);
FXFT_Face GetFace() const { return m_Face; }
CFX_SubstFont* GetSubstFont() const { return m_pSubstFont.get(); }
#ifdef PDF_ENABLE_XFA
FX_BOOL LoadFile(IFX_FileRead* pFile,
int nFaceIndex = 0,
int* pFaceCount = nullptr);
FX_BOOL LoadClone(const CFX_Font* pFont);
void SetFace(FXFT_Face face) { m_Face = face; }
void SetSubstFont(std::unique_ptr<CFX_SubstFont> subst) {
m_pSubstFont = std::move(subst);
}
#endif // PDF_ENABLE_XFA
CFX_PathData* LoadGlyphPath(uint32_t glyph_index, int dest_width = 0);
int GetGlyphWidth(uint32_t glyph_index);
int GetAscent() const;
int GetDescent() const;
FX_BOOL GetGlyphBBox(uint32_t glyph_index, FX_RECT& bbox);
FX_BOOL IsItalic() const;
FX_BOOL IsBold() const;
FX_BOOL IsFixedWidth() const;
FX_BOOL IsVertical() const { return m_bVertical; }
CFX_ByteString GetPsName() const;
CFX_ByteString GetFamilyName() const;
CFX_ByteString GetFaceName() const;
FX_BOOL IsTTFont() const;
FX_BOOL GetBBox(FX_RECT& bbox);
int GetHeight() const;
int GetULPos() const;
int GetULthickness() const;
int GetMaxAdvanceWidth() const;
FX_BOOL IsEmbedded() const { return m_bEmbedded; }
uint8_t* GetSubData() const { return m_pGsubData; }
void SetSubData(uint8_t* data) { m_pGsubData = data; }
#if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
void* GetPlatformFont() const { return m_pPlatformFont; }
void SetPlatformFont(void* font) { m_pPlatformFont = font; }
#endif
uint8_t* GetFontData() const { return m_pFontData; }
uint32_t GetSize() const { return m_dwSize; }
void AdjustMMParams(int glyph_index, int width, int weight);
#ifdef PDF_ENABLE_XFA
protected:
CFX_BinaryBuf m_OtfFontData;
FX_BOOL m_bLogic;
void* m_pOwnedStream;
#endif // PDF_ENABLE_XFA
private:
void ReleasePlatformResource();
void DeleteFace();
FXFT_Face m_Face;
std::unique_ptr<CFX_SubstFont> m_pSubstFont;
std::vector<uint8_t> m_pFontDataAllocation;
uint8_t* m_pFontData;
uint8_t* m_pGsubData;
uint32_t m_dwSize;
#if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
void* m_pPlatformFont;
#endif
FX_BOOL m_bEmbedded;
FX_BOOL m_bVertical;
};
#define ENCODING_INTERNAL 0
#define ENCODING_UNICODE 1
#ifdef PDF_ENABLE_XFA
#define FXFM_ENC_TAG(a, b, c, d) \
(((uint32_t)(a) << 24) | ((uint32_t)(b) << 16) | ((uint32_t)(c) << 8) | \
(uint32_t)(d))
#define FXFM_ENCODING_NONE FXFM_ENC_TAG(0, 0, 0, 0)
#define FXFM_ENCODING_MS_SYMBOL FXFM_ENC_TAG('s', 'y', 'm', 'b')
#define FXFM_ENCODING_UNICODE FXFM_ENC_TAG('u', 'n', 'i', 'c')
#define FXFM_ENCODING_MS_SJIS FXFM_ENC_TAG('s', 'j', 'i', 's')
#define FXFM_ENCODING_MS_GB2312 FXFM_ENC_TAG('g', 'b', ' ', ' ')
#define FXFM_ENCODING_MS_BIG5 FXFM_ENC_TAG('b', 'i', 'g', '5')
#define FXFM_ENCODING_MS_WANSUNG FXFM_ENC_TAG('w', 'a', 'n', 's')
#define FXFM_ENCODING_MS_JOHAB FXFM_ENC_TAG('j', 'o', 'h', 'a')
#define FXFM_ENCODING_ADOBE_STANDARD FXFM_ENC_TAG('A', 'D', 'O', 'B')
#define FXFM_ENCODING_ADOBE_EXPERT FXFM_ENC_TAG('A', 'D', 'B', 'E')
#define FXFM_ENCODING_ADOBE_CUSTOM FXFM_ENC_TAG('A', 'D', 'B', 'C')
#define FXFM_ENCODING_ADOBE_LATIN_1 FXFM_ENC_TAG('l', 'a', 't', '1')
#define FXFM_ENCODING_OLD_LATIN_2 FXFM_ENC_TAG('l', 'a', 't', '2')
#define FXFM_ENCODING_APPLE_ROMAN FXFM_ENC_TAG('a', 'r', 'm', 'n')
#endif // PDF_ENABLE_XFA
class CFX_UnicodeEncoding {
public:
explicit CFX_UnicodeEncoding(CFX_Font* pFont);
virtual ~CFX_UnicodeEncoding();
virtual uint32_t GlyphFromCharCode(uint32_t charcode);
protected:
// Unowned, not nullptr.
CFX_Font* m_pFont;
};
#ifdef PDF_ENABLE_XFA
class CFX_UnicodeEncodingEx : public CFX_UnicodeEncoding {
public:
CFX_UnicodeEncodingEx(CFX_Font* pFont, uint32_t EncodingID);
~CFX_UnicodeEncodingEx() override;
// CFX_UnicodeEncoding:
uint32_t GlyphFromCharCode(uint32_t charcode) override;
uint32_t CharCodeFromUnicode(FX_WCHAR Unicode) const;
private:
uint32_t m_nEncodingID;
};
CFX_UnicodeEncodingEx* FX_CreateFontEncodingEx(
CFX_Font* pFont,
uint32_t nEncodingID = FXFM_ENCODING_NONE);
#endif // PDF_ENABLE_XFA
#define FXFONT_SUBST_MM 0x01
#define FXFONT_SUBST_GLYPHPATH 0x04
#define FXFONT_SUBST_CLEARTYPE 0x08
#define FXFONT_SUBST_TRANSFORM 0x10
#define FXFONT_SUBST_NONSYMBOL 0x20
#define FXFONT_SUBST_EXACT 0x40
#define FXFONT_SUBST_STANDARD 0x80
class CFX_SubstFont {
public:
CFX_SubstFont();
void* m_ExtHandle;
CFX_ByteString m_Family;
int m_Charset;
uint32_t m_SubstFlags;
int m_Weight;
int m_ItalicAngle;
bool m_bSubstCJK;
int m_WeightCJK;
bool m_bItalicCJK;
};
#define FX_FONT_FLAG_SERIF 0x01
#define FX_FONT_FLAG_FIXEDPITCH 0x02
#define FX_FONT_FLAG_ITALIC 0x04
#define FX_FONT_FLAG_BOLD 0x08
#define FX_FONT_FLAG_SYMBOLIC_SYMBOL 0x10
#define FX_FONT_FLAG_SYMBOLIC_DINGBATS 0x20
#define FX_FONT_FLAG_MULTIPLEMASTER 0x40
class CTTFontDesc {
public:
CTTFontDesc() {
m_Type = 0;
m_pFontData = nullptr;
m_RefCount = 0;
}
~CTTFontDesc();
// ret < 0, releaseface not appropriate for this object.
// ret == 0, object released
// ret > 0, object still alive, other referrers.
int ReleaseFace(FXFT_Face face);
int m_Type;
union {
struct {
FX_BOOL m_bItalic;
FX_BOOL m_bBold;
FXFT_Face m_pFace;
} m_SingleFace;
struct {
FXFT_Face m_pFaces[16];
} m_TTCFace;
};
uint8_t* m_pFontData;
int m_RefCount;
};
class CFX_FontFaceInfo {
public:
CFX_FontFaceInfo(CFX_ByteString filePath,
CFX_ByteString faceName,
CFX_ByteString fontTables,
uint32_t fontOffset,
uint32_t fileSize);
const CFX_ByteString m_FilePath;
const CFX_ByteString m_FaceName;
const CFX_ByteString m_FontTables;
const uint32_t m_FontOffset;
const uint32_t m_FileSize;
uint32_t m_Styles;
uint32_t m_Charsets;
};
class CFX_CountedFaceCache {
public:
CFX_FaceCache* m_Obj;
uint32_t m_nCount;
};
class CFX_FontCache {
public:
CFX_FontCache();
~CFX_FontCache();
CFX_FaceCache* GetCachedFace(CFX_Font* pFont);
void ReleaseCachedFace(CFX_Font* pFont);
void FreeCache(FX_BOOL bRelease = FALSE);
#ifdef _SKIA_SUPPORT_
CFX_TypeFace* GetDeviceCache(CFX_Font* pFont);
#endif
private:
using CFX_FTCacheMap = std::map<FXFT_Face, CFX_CountedFaceCache*>;
CFX_FTCacheMap m_FTFaceMap;
CFX_FTCacheMap m_ExtFaceMap;
};
class CFX_AutoFontCache {
public:
CFX_AutoFontCache(CFX_FontCache* pFontCache, CFX_Font* pFont)
: m_pFontCache(pFontCache), m_pFont(pFont) {}
~CFX_AutoFontCache() { m_pFontCache->ReleaseCachedFace(m_pFont); }
CFX_FontCache* m_pFontCache;
CFX_Font* m_pFont;
};
class CFX_GlyphBitmap {
public:
int m_Top;
int m_Left;
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;
int m_OriginY;
FX_FLOAT m_fOriginX;
FX_FLOAT m_fOriginY;
};
FX_RECT FXGE_GetGlyphsBBox(const std::vector<FXTEXT_GLYPHPOS>& glyphs,
int anti_alias,
FX_FLOAT retinaScaleX = 1.0f,
FX_FLOAT retinaScaleY = 1.0f);
CFX_ByteString GetNameFromTT(const uint8_t* name_table,
uint32_t name_table_size,
uint32_t name);
int PDF_GetStandardFontName(CFX_ByteString* name);
#endif // CORE_FXGE_INCLUDE_FX_FONT_H_