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1 // Copyright 2016 PDFium Authors. All rights reserved. | 1 // Copyright 2016 PDFium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com | 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
6 | 6 |
7 #include "core/fpdfapi/fpdf_font/cpdf_simplefont.h" | 7 #include "core/fpdfapi/fpdf_font/cpdf_simplefont.h" |
8 | 8 |
9 #include "core/fpdfapi/fpdf_font/font_int.h" | 9 #include "core/fpdfapi/fpdf_font/font_int.h" |
10 #include "core/fpdfapi/fpdf_parser/include/cpdf_array.h" | 10 #include "core/fpdfapi/fpdf_parser/include/cpdf_array.h" |
11 #include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h" | 11 #include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h" |
12 #include "core/fxge/include/fx_freetype.h" | 12 #include "core/fxge/include/fx_freetype.h" |
13 | 13 |
14 CPDF_SimpleFont::CPDF_SimpleFont() : m_BaseEncoding(PDFFONT_ENCODING_BUILTIN) { | 14 CPDF_SimpleFont::CPDF_SimpleFont() : m_BaseEncoding(PDFFONT_ENCODING_BUILTIN) { |
15 FXSYS_memset(m_CharWidth, 0xff, sizeof(m_CharWidth)); | 15 FXSYS_memset(m_CharWidth, 0xff, sizeof(m_CharWidth)); |
16 FXSYS_memset(m_GlyphIndex, 0xff, sizeof(m_GlyphIndex)); | 16 FXSYS_memset(m_GlyphIndex, 0xff, sizeof(m_GlyphIndex)); |
17 FXSYS_memset(m_ExtGID, 0xff, sizeof(m_ExtGID)); | 17 FXSYS_memset(m_ExtGID, 0xff, sizeof(m_ExtGID)); |
| 18 for (size_t i = 0; i < FX_ArraySize(m_CharBBox); ++i) |
| 19 m_CharBBox[i] = FX_RECT(-1, -1, -1, -1); |
18 } | 20 } |
19 | 21 |
20 CPDF_SimpleFont::~CPDF_SimpleFont() {} | 22 CPDF_SimpleFont::~CPDF_SimpleFont() {} |
21 | 23 |
22 int CPDF_SimpleFont::GlyphFromCharCode(uint32_t charcode, bool* pVertGlyph) { | 24 int CPDF_SimpleFont::GlyphFromCharCode(uint32_t charcode, bool* pVertGlyph) { |
23 if (pVertGlyph) | 25 if (pVertGlyph) |
24 *pVertGlyph = false; | 26 *pVertGlyph = false; |
25 | 27 |
26 if (charcode > 0xff) | 28 if (charcode > 0xff) |
27 return -1; | 29 return -1; |
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45 if (m_bUseFontWidth) { | 47 if (m_bUseFontWidth) { |
46 m_CharWidth[charcode] = m_CharWidth[32]; | 48 m_CharWidth[charcode] = m_CharWidth[32]; |
47 } | 49 } |
48 } | 50 } |
49 return; | 51 return; |
50 } | 52 } |
51 FXFT_Face face = m_Font.GetFace(); | 53 FXFT_Face face = m_Font.GetFace(); |
52 int err = FXFT_Load_Glyph( | 54 int err = FXFT_Load_Glyph( |
53 face, glyph_index, | 55 face, glyph_index, |
54 FXFT_LOAD_NO_SCALE | FXFT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH); | 56 FXFT_LOAD_NO_SCALE | FXFT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH); |
55 if (err) { | 57 if (err) |
56 return; | 58 return; |
57 } | 59 |
58 m_CharBBox[charcode] = FX_SMALL_RECT( | 60 int iHoriBearingX = FXFT_Get_Glyph_HoriBearingX(face); |
59 TT2PDF(FXFT_Get_Glyph_HoriBearingX(face), face), | 61 int iHoriBearingY = FXFT_Get_Glyph_HoriBearingY(face); |
60 TT2PDF(FXFT_Get_Glyph_HoriBearingY(face), face), | 62 m_CharBBox[charcode] = |
61 TT2PDF(FXFT_Get_Glyph_HoriBearingX(face) + FXFT_Get_Glyph_Width(face), | 63 FX_RECT(TT2PDF(iHoriBearingX, face), TT2PDF(iHoriBearingY, face), |
62 face), | 64 TT2PDF(iHoriBearingX + FXFT_Get_Glyph_Width(face), face), |
63 TT2PDF(FXFT_Get_Glyph_HoriBearingY(face) - FXFT_Get_Glyph_Height(face), | 65 TT2PDF(iHoriBearingY - FXFT_Get_Glyph_Height(face), face)); |
64 face)); | |
65 | 66 |
66 if (m_bUseFontWidth) { | 67 if (m_bUseFontWidth) { |
67 int TT_Width = TT2PDF(FXFT_Get_Glyph_HoriAdvance(face), face); | 68 int TT_Width = TT2PDF(FXFT_Get_Glyph_HoriAdvance(face), face); |
68 if (m_CharWidth[charcode] == 0xffff) { | 69 if (m_CharWidth[charcode] == 0xffff) { |
69 m_CharWidth[charcode] = TT_Width; | 70 m_CharWidth[charcode] = TT_Width; |
70 } else if (TT_Width && !IsEmbedded()) { | 71 } else if (TT_Width && !IsEmbedded()) { |
71 m_CharBBox[charcode].right = | 72 m_CharBBox[charcode].right = |
72 m_CharBBox[charcode].right * m_CharWidth[charcode] / TT_Width; | 73 m_CharBBox[charcode].right * m_CharWidth[charcode] / TT_Width; |
73 m_CharBBox[charcode].left = | 74 m_CharBBox[charcode].left = |
74 m_CharBBox[charcode].left * m_CharWidth[charcode] / TT_Width; | 75 m_CharBBox[charcode].left * m_CharWidth[charcode] / TT_Width; |
75 } | 76 } |
76 } | 77 } |
77 } | 78 } |
78 | 79 |
79 int CPDF_SimpleFont::GetCharWidthF(uint32_t charcode, int level) { | 80 int CPDF_SimpleFont::GetCharWidthF(uint32_t charcode, int level) { |
80 if (charcode > 0xff) { | 81 if (charcode > 0xff) |
81 charcode = 0; | 82 charcode = 0; |
82 } | 83 |
83 if (m_CharWidth[charcode] == 0xffff) { | 84 if (m_CharWidth[charcode] == 0xffff) { |
84 LoadCharMetrics(charcode); | 85 LoadCharMetrics(charcode); |
85 if (m_CharWidth[charcode] == 0xffff) { | 86 if (m_CharWidth[charcode] == 0xffff) { |
86 m_CharWidth[charcode] = 0; | 87 m_CharWidth[charcode] = 0; |
87 } | 88 } |
88 } | 89 } |
89 return (int16_t)m_CharWidth[charcode]; | 90 return m_CharWidth[charcode]; |
90 } | 91 } |
91 | 92 |
92 FX_RECT CPDF_SimpleFont::GetCharBBox(uint32_t charcode, int level) { | 93 FX_RECT CPDF_SimpleFont::GetCharBBox(uint32_t charcode, int level) { |
93 if (charcode > 0xff) | 94 if (charcode > 0xff) |
94 charcode = 0; | 95 charcode = 0; |
95 | 96 |
96 if (m_CharBBox[charcode].left == FX_SMALL_RECT::kInvalid) | 97 if (m_CharBBox[charcode].left == -1) |
97 LoadCharMetrics(charcode); | 98 LoadCharMetrics(charcode); |
98 | 99 |
99 return FX_RECT(m_CharBBox[charcode]); | 100 return m_CharBBox[charcode]; |
100 } | 101 } |
101 | 102 |
102 FX_BOOL CPDF_SimpleFont::LoadCommon() { | 103 FX_BOOL CPDF_SimpleFont::LoadCommon() { |
103 CPDF_Dictionary* pFontDesc = m_pFontDict->GetDictBy("FontDescriptor"); | 104 CPDF_Dictionary* pFontDesc = m_pFontDict->GetDictBy("FontDescriptor"); |
104 if (pFontDesc) { | 105 if (pFontDesc) { |
105 LoadFontDescriptor(pFontDesc); | 106 LoadFontDescriptor(pFontDesc); |
106 } | 107 } |
107 CPDF_Array* pWidthArray = m_pFontDict->GetArrayBy("Widths"); | 108 CPDF_Array* pWidthArray = m_pFontDict->GetArrayBy("Widths"); |
108 m_bUseFontWidth = TRUE; | 109 m_bUseFontWidth = !pWidthArray; |
109 if (pWidthArray) { | 110 if (pWidthArray) { |
110 m_bUseFontWidth = FALSE; | |
111 if (pFontDesc && pFontDesc->KeyExist("MissingWidth")) { | 111 if (pFontDesc && pFontDesc->KeyExist("MissingWidth")) { |
112 int MissingWidth = pFontDesc->GetIntegerBy("MissingWidth"); | 112 int MissingWidth = pFontDesc->GetIntegerBy("MissingWidth"); |
113 for (int i = 0; i < 256; i++) { | 113 for (int i = 0; i < 256; i++) { |
114 m_CharWidth[i] = MissingWidth; | 114 m_CharWidth[i] = MissingWidth; |
115 } | 115 } |
116 } | 116 } |
117 size_t width_start = m_pFontDict->GetIntegerBy("FirstChar", 0); | 117 size_t width_start = m_pFontDict->GetIntegerBy("FirstChar", 0); |
118 size_t width_end = m_pFontDict->GetIntegerBy("LastChar", 0); | 118 size_t width_end = m_pFontDict->GetIntegerBy("LastChar", 0); |
119 if (width_start <= 255) { | 119 if (width_start <= 255) { |
120 if (width_end == 0 || width_end >= width_start + pWidthArray->GetCount()) | 120 if (width_end == 0 || width_end >= width_start + pWidthArray->GetCount()) |
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201 return CFX_WideString(); | 201 return CFX_WideString(); |
202 return ret; | 202 return ret; |
203 } | 203 } |
204 | 204 |
205 uint32_t CPDF_SimpleFont::CharCodeFromUnicode(FX_WCHAR unicode) const { | 205 uint32_t CPDF_SimpleFont::CharCodeFromUnicode(FX_WCHAR unicode) const { |
206 uint32_t ret = CPDF_Font::CharCodeFromUnicode(unicode); | 206 uint32_t ret = CPDF_Font::CharCodeFromUnicode(unicode); |
207 if (ret) | 207 if (ret) |
208 return ret; | 208 return ret; |
209 return m_Encoding.CharCodeFromUnicode(unicode); | 209 return m_Encoding.CharCodeFromUnicode(unicode); |
210 } | 210 } |
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