1 // Copyright 2014 PDFium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com 6 7 #ifndef CORE_FXGE_FX_FONT_H_ 8 #define CORE_FXGE_FX_FONT_H_ 9 10 #include <memory> 11 #include <utility> 12 #include <vector> 13 14 #include "core/fxcrt/fx_system.h" 15 #include "core/fxcrt/unowned_ptr.h" 16 #include "core/fxge/cfx_substfont.h" 17 #include "core/fxge/dib/cfx_dibitmap.h" 18 #include "core/fxge/fx_dib.h" 19 #include "core/fxge/fx_freetype.h" 20 21 #if defined _SKIA_SUPPORT_ || defined _SKIA_SUPPORT_PATHS_ 22 class SkTypeface; 23 24 using CFX_TypeFace = SkTypeface; 25 #endif 26 27 /* Font pitch and family flags */ 28 #define FXFONT_FF_FIXEDPITCH (1 << 0) 29 #define FXFONT_FF_ROMAN (1 << 4) 30 #define FXFONT_FF_SCRIPT (4 << 4) 31 32 /* Typical weight values */ 33 #define FXFONT_FW_NORMAL 400 34 #define FXFONT_FW_BOLD 700 35 #define FXFONT_FW_BOLD_BOLD 900 36 37 /* Font styles as defined in PDF 1.7 Table 5.20 */ 38 #define FXFONT_NORMAL (0) 39 #define FXFONT_FIXED_PITCH (1 << 0) 40 #define FXFONT_SERIF (1 << 1) 41 #define FXFONT_SYMBOLIC (1 << 2) 42 #define FXFONT_SCRIPT (1 << 3) 43 #define FXFONT_NONSYMBOLIC (1 << 5) 44 #define FXFONT_ITALIC (1 << 6) 45 #define FXFONT_ALLCAP (1 << 16) 46 #define FXFONT_SMALLCAP (1 << 17) 47 #define FXFONT_BOLD (1 << 18) 48 49 /* Other font flags */ 50 #define FXFONT_USEEXTERNATTR 0x80000 51 #define FXFONT_CIDFONT 0x100000 52 #ifdef PDF_ENABLE_XFA 53 #define FXFONT_EXACTMATCH 0x80000000 54 #endif // PDF_ENABLE_XFA 55 56 #define GET_TT_SHORT(w) (uint16_t)(((w)[0] << 8) | (w)[1]) 57 #define GET_TT_LONG(w) \ 58 (uint32_t)(((w)[0] << 24) | ((w)[1] << 16) | ((w)[2] << 8) | (w)[3]) 59 60 // Sets the given transform on the font, and resets it to the identity when it 61 // goes out of scope. 62 class ScopedFontTransform { 63 public: 64 ScopedFontTransform(FT_Face face, FXFT_Matrix* matrix); 65 ~ScopedFontTransform(); 66 67 private: 68 FT_Face m_Face; 69 }; 70 71 class CFX_GlyphBitmap { 72 public: 73 CFX_GlyphBitmap(); 74 ~CFX_GlyphBitmap(); 75 76 int m_Top; 77 int m_Left; 78 RetainPtr<CFX_DIBitmap> m_pBitmap; 79 }; 80 81 inline CFX_GlyphBitmap::CFX_GlyphBitmap() 82 : m_pBitmap(pdfium::MakeRetain<CFX_DIBitmap>()) {} 83 84 inline CFX_GlyphBitmap::~CFX_GlyphBitmap() = default; 85 86 class FXTEXT_GLYPHPOS { 87 public: 88 FXTEXT_GLYPHPOS(); 89 FXTEXT_GLYPHPOS(const FXTEXT_GLYPHPOS&); 90 ~FXTEXT_GLYPHPOS(); 91 92 const CFX_GlyphBitmap* m_pGlyph; 93 CFX_Point m_Origin; 94 CFX_PointF m_fOrigin; 95 }; 96 97 FX_RECT FXGE_GetGlyphsBBox(const std::vector<FXTEXT_GLYPHPOS>& glyphs, 98 int anti_alias, 99 float retinaScaleX, 100 float retinaScaleY); 101 102 ByteString GetNameFromTT(const uint8_t* name_table, 103 uint32_t name_table_size, 104 uint32_t name); 105 106 int PDF_GetStandardFontName(ByteString* name); 107 108 inline bool FontStyleIsBold(uint32_t style) { 109 return !!(style & FXFONT_BOLD); 110 } 111 inline bool FontStyleIsItalic(uint32_t style) { 112 return !!(style & FXFONT_ITALIC); 113 } 114 inline bool FontStyleIsFixedPitch(uint32_t style) { 115 return !!(style & FXFONT_FIXED_PITCH); 116 } 117 inline bool FontStyleIsSymbolic(uint32_t style) { 118 return !!(style & FXFONT_SYMBOLIC); 119 } 120 inline bool FontStyleIsNonSymbolic(uint32_t style) { 121 return !!(style & FXFONT_NONSYMBOLIC); 122 } 123 inline bool FontStyleIsAllCaps(uint32_t style) { 124 return !!(style & FXFONT_ALLCAP); 125 } 126 inline bool FontStyleIsSerif(uint32_t style) { 127 return !!(style & FXFONT_SERIF); 128 } 129 inline bool FontStyleIsScript(uint32_t style) { 130 return !!(style & FXFONT_SCRIPT); 131 } 132 133 inline bool FontFamilyIsFixedPitch(uint32_t family) { 134 return !!(family & FXFONT_FF_FIXEDPITCH); 135 } 136 inline bool FontFamilyIsRoman(uint32_t family) { 137 return !!(family & FXFONT_FF_ROMAN); 138 } 139 inline bool FontFamilyIsScript(int32_t family) { 140 return !!(family & FXFONT_FF_SCRIPT); 141 } 142 143 #endif // CORE_FXGE_FX_FONT_H_ 144
