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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" |
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94 FX_RECT CPDF_SimpleFont::GetCharBBox(uint32_t charcode, int level) { | 94 FX_RECT CPDF_SimpleFont::GetCharBBox(uint32_t charcode, int level) { |
95 if (charcode > 0xff) | 95 if (charcode > 0xff) |
96 charcode = 0; | 96 charcode = 0; |
97 | 97 |
98 if (m_CharBBox[charcode].left == -1) | 98 if (m_CharBBox[charcode].left == -1) |
99 LoadCharMetrics(charcode); | 99 LoadCharMetrics(charcode); |
100 | 100 |
101 return m_CharBBox[charcode]; | 101 return m_CharBBox[charcode]; |
102 } | 102 } |
103 | 103 |
104 FX_BOOL CPDF_SimpleFont::LoadCommon() { | 104 bool CPDF_SimpleFont::LoadCommon() { |
105 CPDF_Dictionary* pFontDesc = m_pFontDict->GetDictFor("FontDescriptor"); | 105 CPDF_Dictionary* pFontDesc = m_pFontDict->GetDictFor("FontDescriptor"); |
106 if (pFontDesc) { | 106 if (pFontDesc) { |
107 LoadFontDescriptor(pFontDesc); | 107 LoadFontDescriptor(pFontDesc); |
108 } | 108 } |
109 CPDF_Array* pWidthArray = m_pFontDict->GetArrayFor("Widths"); | 109 CPDF_Array* pWidthArray = m_pFontDict->GetArrayFor("Widths"); |
110 m_bUseFontWidth = !pWidthArray; | 110 m_bUseFontWidth = !pWidthArray; |
111 if (pWidthArray) { | 111 if (pWidthArray) { |
112 if (pFontDesc && pFontDesc->KeyExist("MissingWidth")) { | 112 if (pFontDesc && pFontDesc->KeyExist("MissingWidth")) { |
113 int MissingWidth = pFontDesc->GetIntegerFor("MissingWidth"); | 113 int MissingWidth = pFontDesc->GetIntegerFor("MissingWidth"); |
114 for (int i = 0; i < 256; i++) { | 114 for (int i = 0; i < 256; i++) { |
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135 } | 135 } |
136 if (!(m_Flags & PDFFONT_SYMBOLIC)) { | 136 if (!(m_Flags & PDFFONT_SYMBOLIC)) { |
137 m_BaseEncoding = PDFFONT_ENCODING_STANDARD; | 137 m_BaseEncoding = PDFFONT_ENCODING_STANDARD; |
138 } | 138 } |
139 CPDF_Object* pEncoding = m_pFontDict->GetDirectObjectFor("Encoding"); | 139 CPDF_Object* pEncoding = m_pFontDict->GetDirectObjectFor("Encoding"); |
140 LoadPDFEncoding(pEncoding, m_BaseEncoding, &m_CharNames, !!m_pFontFile, | 140 LoadPDFEncoding(pEncoding, m_BaseEncoding, &m_CharNames, !!m_pFontFile, |
141 m_Font.IsTTFont()); | 141 m_Font.IsTTFont()); |
142 LoadGlyphMap(); | 142 LoadGlyphMap(); |
143 m_CharNames.clear(); | 143 m_CharNames.clear(); |
144 if (!m_Font.GetFace()) | 144 if (!m_Font.GetFace()) |
145 return TRUE; | 145 return true; |
146 | 146 |
147 if (m_Flags & PDFFONT_ALLCAP) { | 147 if (m_Flags & PDFFONT_ALLCAP) { |
148 unsigned char kLowercases[][2] = {{'a', 'z'}, {0xe0, 0xf6}, {0xf8, 0xfd}}; | 148 unsigned char kLowercases[][2] = {{'a', 'z'}, {0xe0, 0xf6}, {0xf8, 0xfd}}; |
149 for (size_t range = 0; range < FX_ArraySize(kLowercases); ++range) { | 149 for (size_t range = 0; range < FX_ArraySize(kLowercases); ++range) { |
150 const auto& lower = kLowercases[range]; | 150 const auto& lower = kLowercases[range]; |
151 for (int i = lower[0]; i <= lower[1]; ++i) { | 151 for (int i = lower[0]; i <= lower[1]; ++i) { |
152 if (m_GlyphIndex[i] != 0xffff && m_pFontFile) | 152 if (m_GlyphIndex[i] != 0xffff && m_pFontFile) |
153 continue; | 153 continue; |
154 | 154 |
155 int j = i - 32; | 155 int j = i - 32; |
156 m_GlyphIndex[i] = m_GlyphIndex[j]; | 156 m_GlyphIndex[i] = m_GlyphIndex[j]; |
157 if (m_CharWidth[j]) { | 157 if (m_CharWidth[j]) { |
158 m_CharWidth[i] = m_CharWidth[j]; | 158 m_CharWidth[i] = m_CharWidth[j]; |
159 m_CharBBox[i] = m_CharBBox[j]; | 159 m_CharBBox[i] = m_CharBBox[j]; |
160 } | 160 } |
161 } | 161 } |
162 } | 162 } |
163 } | 163 } |
164 CheckFontMetrics(); | 164 CheckFontMetrics(); |
165 return TRUE; | 165 return true; |
166 } | 166 } |
167 | 167 |
168 void CPDF_SimpleFont::LoadSubstFont() { | 168 void CPDF_SimpleFont::LoadSubstFont() { |
169 if (!m_bUseFontWidth && !(m_Flags & PDFFONT_FIXEDPITCH)) { | 169 if (!m_bUseFontWidth && !(m_Flags & PDFFONT_FIXEDPITCH)) { |
170 int width = 0, i; | 170 int width = 0, i; |
171 for (i = 0; i < 256; i++) { | 171 for (i = 0; i < 256; i++) { |
172 if (m_CharWidth[i] == 0 || m_CharWidth[i] == 0xffff) { | 172 if (m_CharWidth[i] == 0 || m_CharWidth[i] == 0xffff) { |
173 continue; | 173 continue; |
174 } | 174 } |
175 if (width == 0) { | 175 if (width == 0) { |
176 width = m_CharWidth[i]; | 176 width = m_CharWidth[i]; |
177 } else if (width != m_CharWidth[i]) { | 177 } else if (width != m_CharWidth[i]) { |
178 break; | 178 break; |
179 } | 179 } |
180 } | 180 } |
181 if (i == 256 && width) { | 181 if (i == 256 && width) { |
182 m_Flags |= PDFFONT_FIXEDPITCH; | 182 m_Flags |= PDFFONT_FIXEDPITCH; |
183 } | 183 } |
184 } | 184 } |
185 pdfium::base::CheckedNumeric<int> safeStemV(m_StemV); | 185 pdfium::base::CheckedNumeric<int> safeStemV(m_StemV); |
186 if (m_StemV < 140) | 186 if (m_StemV < 140) |
187 safeStemV *= 5; | 187 safeStemV *= 5; |
188 else | 188 else |
189 safeStemV = safeStemV * 4 + 140; | 189 safeStemV = safeStemV * 4 + 140; |
190 m_Font.LoadSubst(m_BaseFont, IsTrueTypeFont(), m_Flags, | 190 m_Font.LoadSubst(m_BaseFont, IsTrueTypeFont(), m_Flags, |
191 safeStemV.ValueOrDefault(FXFONT_FW_NORMAL), m_ItalicAngle, | 191 safeStemV.ValueOrDefault(FXFONT_FW_NORMAL), m_ItalicAngle, 0, |
192 0); | 192 false); |
193 } | 193 } |
194 | 194 |
195 FX_BOOL CPDF_SimpleFont::IsUnicodeCompatible() const { | 195 bool CPDF_SimpleFont::IsUnicodeCompatible() const { |
196 return m_BaseEncoding != PDFFONT_ENCODING_BUILTIN && | 196 return m_BaseEncoding != PDFFONT_ENCODING_BUILTIN && |
197 m_BaseEncoding != PDFFONT_ENCODING_ADOBE_SYMBOL && | 197 m_BaseEncoding != PDFFONT_ENCODING_ADOBE_SYMBOL && |
198 m_BaseEncoding != PDFFONT_ENCODING_ZAPFDINGBATS; | 198 m_BaseEncoding != PDFFONT_ENCODING_ZAPFDINGBATS; |
199 } | 199 } |
200 | 200 |
201 CFX_WideString CPDF_SimpleFont::UnicodeFromCharCode(uint32_t charcode) const { | 201 CFX_WideString CPDF_SimpleFont::UnicodeFromCharCode(uint32_t charcode) const { |
202 CFX_WideString unicode = CPDF_Font::UnicodeFromCharCode(charcode); | 202 CFX_WideString unicode = CPDF_Font::UnicodeFromCharCode(charcode); |
203 if (!unicode.IsEmpty()) | 203 if (!unicode.IsEmpty()) |
204 return unicode; | 204 return unicode; |
205 FX_WCHAR ret = m_Encoding.UnicodeFromCharCode((uint8_t)charcode); | 205 FX_WCHAR ret = m_Encoding.UnicodeFromCharCode((uint8_t)charcode); |
206 if (ret == 0) | 206 if (ret == 0) |
207 return CFX_WideString(); | 207 return CFX_WideString(); |
208 return ret; | 208 return ret; |
209 } | 209 } |
210 | 210 |
211 uint32_t CPDF_SimpleFont::CharCodeFromUnicode(FX_WCHAR unicode) const { | 211 uint32_t CPDF_SimpleFont::CharCodeFromUnicode(FX_WCHAR unicode) const { |
212 uint32_t ret = CPDF_Font::CharCodeFromUnicode(unicode); | 212 uint32_t ret = CPDF_Font::CharCodeFromUnicode(unicode); |
213 if (ret) | 213 if (ret) |
214 return ret; | 214 return ret; |
215 return m_Encoding.CharCodeFromUnicode(unicode); | 215 return m_Encoding.CharCodeFromUnicode(unicode); |
216 } | 216 } |
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