| // Copyright 2016 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 |
| |
| #include "core/fpdfapi/font/cpdf_type1font.h" |
| |
| #include <algorithm> |
| |
| #include "core/fpdfapi/parser/cpdf_dictionary.h" |
| #include "core/fxge/cfx_gemodule.h" |
| #include "core/fxge/fx_freetype.h" |
| |
| #if _FX_PLATFORM_ == _FX_PLATFORM_APPLE_ |
| #include "core/fxge/apple/apple_int.h" |
| #endif |
| |
| namespace { |
| |
| #if _FX_PLATFORM_ == _FX_PLATFORM_APPLE_ |
| struct GlyphNameMap { |
| const char* m_pStrAdobe; // Raw, POD struct. |
| const char* m_pStrUnicode; // Raw, POD struct. |
| }; |
| |
| const GlyphNameMap g_GlyphNameSubsts[] = {{"ff", "uniFB00"}, |
| {"ffi", "uniFB03"}, |
| {"ffl", "uniFB04"}, |
| {"fi", "uniFB01"}, |
| {"fl", "uniFB02"}}; |
| |
| const char* GlyphNameRemap(const char* pStrAdobe) { |
| for (const auto& element : g_GlyphNameSubsts) { |
| if (!FXSYS_stricmp(element.m_pStrAdobe, pStrAdobe)) |
| return element.m_pStrUnicode; |
| } |
| return nullptr; |
| } |
| |
| #endif // _FX_PLATFORM_ == _FX_PLATFORM_APPLE_ |
| |
| bool FT_UseType1Charmap(FXFT_Face face) { |
| if (FXFT_Get_Face_CharmapCount(face) == 0) { |
| return false; |
| } |
| if (FXFT_Get_Face_CharmapCount(face) == 1 && |
| FXFT_Get_Charmap_Encoding(FXFT_Get_Face_Charmaps(face)[0]) == |
| FXFT_ENCODING_UNICODE) { |
| return false; |
| } |
| if (FXFT_Get_Charmap_Encoding(FXFT_Get_Face_Charmaps(face)[0]) == |
| FXFT_ENCODING_UNICODE) { |
| FXFT_Set_Charmap(face, FXFT_Get_Face_Charmaps(face)[1]); |
| } else { |
| FXFT_Set_Charmap(face, FXFT_Get_Face_Charmaps(face)[0]); |
| } |
| return true; |
| } |
| |
| } // namespace |
| |
| CPDF_Type1Font::CPDF_Type1Font(CPDF_Document* pDocument, |
| CPDF_Dictionary* pFontDict) |
| : CPDF_SimpleFont(pDocument, pFontDict) { |
| #if _FX_PLATFORM_ == _FX_PLATFORM_APPLE_ |
| memset(m_ExtGID, 0xff, sizeof(m_ExtGID)); |
| #endif |
| } |
| |
| CPDF_Type1Font::~CPDF_Type1Font() = default; |
| |
| bool CPDF_Type1Font::IsType1Font() const { |
| return true; |
| } |
| |
| const CPDF_Type1Font* CPDF_Type1Font::AsType1Font() const { |
| return this; |
| } |
| |
| CPDF_Type1Font* CPDF_Type1Font::AsType1Font() { |
| return this; |
| } |
| |
| bool CPDF_Type1Font::Load() { |
| m_Base14Font = PDF_GetStandardFontName(&m_BaseFont); |
| if (!IsBase14Font()) |
| return LoadCommon(); |
| |
| const CPDF_Dictionary* pFontDesc = m_pFontDict->GetDictFor("FontDescriptor"); |
| if (pFontDesc && pFontDesc->KeyExist("Flags")) |
| m_Flags = pFontDesc->GetIntegerFor("Flags"); |
| else |
| m_Flags = m_Base14Font >= 12 ? FXFONT_SYMBOLIC : FXFONT_NONSYMBOLIC; |
| |
| if (m_Base14Font < 4) { |
| for (int i = 0; i < 256; i++) |
| m_CharWidth[i] = 600; |
| } |
| if (m_Base14Font == 12) |
| m_BaseEncoding = PDFFONT_ENCODING_ADOBE_SYMBOL; |
| else if (m_Base14Font == 13) |
| m_BaseEncoding = PDFFONT_ENCODING_ZAPFDINGBATS; |
| else if (FontStyleIsNonSymbolic(m_Flags)) |
| m_BaseEncoding = PDFFONT_ENCODING_STANDARD; |
| return LoadCommon(); |
| } |
| |
| #if _FX_PLATFORM_ == _FX_PLATFORM_APPLE_ |
| int CPDF_Type1Font::GlyphFromCharCodeExt(uint32_t charcode) { |
| if (charcode > 0xff) |
| return -1; |
| |
| int index = m_ExtGID[static_cast<uint8_t>(charcode)]; |
| return index != 0xffff ? index : -1; |
| } |
| #endif |
| |
| void CPDF_Type1Font::LoadGlyphMap() { |
| if (!m_Font.GetFace()) |
| return; |
| |
| #if _FX_PLATFORM_ == _FX_PLATFORM_APPLE_ |
| bool bCoreText = true; |
| CQuartz2D& quartz2d = |
| static_cast<CApplePlatform*>(CFX_GEModule::Get()->GetPlatformData()) |
| ->m_quartz2d; |
| if (!m_Font.GetPlatformFont()) { |
| if (m_Font.GetPsName() == "DFHeiStd-W5") |
| bCoreText = false; |
| |
| pdfium::span<const uint8_t> span = m_Font.GetFontSpan(); |
| m_Font.SetPlatformFont(quartz2d.CreateFont(span.data(), span.size())); |
| if (!m_Font.GetPlatformFont()) |
| bCoreText = false; |
| } |
| #endif |
| if (!IsEmbedded() && (m_Base14Font < 12) && m_Font.IsTTFont()) { |
| if (FT_UseTTCharmap(m_Font.GetFace(), 3, 0)) { |
| bool bGotOne = false; |
| for (uint32_t charcode = 0; charcode < 256; charcode++) { |
| const uint8_t prefix[4] = {0x00, 0xf0, 0xf1, 0xf2}; |
| for (int j = 0; j < 4; j++) { |
| uint16_t unicode = prefix[j] * 256 + charcode; |
| m_GlyphIndex[charcode] = |
| FXFT_Get_Char_Index(m_Font.GetFace(), unicode); |
| #if _FX_PLATFORM_ == _FX_PLATFORM_APPLE_ |
| CalcExtGID(charcode); |
| #endif |
| if (m_GlyphIndex[charcode]) { |
| bGotOne = true; |
| break; |
| } |
| } |
| } |
| if (bGotOne) { |
| #if _FX_PLATFORM_ == _FX_PLATFORM_APPLE_ |
| if (!bCoreText) |
| memcpy(m_ExtGID, m_GlyphIndex, 256); |
| #endif |
| return; |
| } |
| } |
| FXFT_Select_Charmap(m_Font.GetFace(), FXFT_ENCODING_UNICODE); |
| if (m_BaseEncoding == 0) |
| m_BaseEncoding = PDFFONT_ENCODING_STANDARD; |
| |
| for (uint32_t charcode = 0; charcode < 256; charcode++) { |
| const char* name = |
| GetAdobeCharName(m_BaseEncoding, m_CharNames, charcode); |
| if (!name) |
| continue; |
| |
| m_Encoding.m_Unicodes[charcode] = PDF_UnicodeFromAdobeName(name); |
| m_GlyphIndex[charcode] = FXFT_Get_Char_Index( |
| m_Font.GetFace(), m_Encoding.m_Unicodes[charcode]); |
| #if _FX_PLATFORM_ == _FX_PLATFORM_APPLE_ |
| CalcExtGID(charcode); |
| #endif |
| if (m_GlyphIndex[charcode] == 0 && strcmp(name, ".notdef") == 0) { |
| m_Encoding.m_Unicodes[charcode] = 0x20; |
| m_GlyphIndex[charcode] = FXFT_Get_Char_Index(m_Font.GetFace(), 0x20); |
| #if _FX_PLATFORM_ == _FX_PLATFORM_APPLE_ |
| CalcExtGID(charcode); |
| #endif |
| } |
| } |
| #if _FX_PLATFORM_ == _FX_PLATFORM_APPLE_ |
| if (!bCoreText) |
| memcpy(m_ExtGID, m_GlyphIndex, 256); |
| #endif |
| return; |
| } |
| FT_UseType1Charmap(m_Font.GetFace()); |
| #if _FX_PLATFORM_ == _FX_PLATFORM_APPLE_ |
| if (bCoreText) { |
| if (FontStyleIsSymbolic(m_Flags)) { |
| for (uint32_t charcode = 0; charcode < 256; charcode++) { |
| const char* name = |
| GetAdobeCharName(m_BaseEncoding, m_CharNames, charcode); |
| if (name) { |
| m_Encoding.m_Unicodes[charcode] = PDF_UnicodeFromAdobeName(name); |
| m_GlyphIndex[charcode] = FXFT_Get_Name_Index(m_Font.GetFace(), name); |
| SetExtGID(name, charcode); |
| } else { |
| m_GlyphIndex[charcode] = |
| FXFT_Get_Char_Index(m_Font.GetFace(), charcode); |
| wchar_t unicode = 0; |
| if (m_GlyphIndex[charcode]) { |
| unicode = |
| FT_UnicodeFromCharCode(PDFFONT_ENCODING_STANDARD, charcode); |
| } |
| char name_glyph[256]; |
| memset(name_glyph, 0, sizeof(name_glyph)); |
| FXFT_Get_Glyph_Name(m_Font.GetFace(), m_GlyphIndex[charcode], |
| name_glyph, 256); |
| name_glyph[255] = 0; |
| if (unicode == 0 && name_glyph[0] != 0) |
| unicode = PDF_UnicodeFromAdobeName(name_glyph); |
| |
| m_Encoding.m_Unicodes[charcode] = unicode; |
| SetExtGID(name_glyph, charcode); |
| } |
| } |
| return; |
| } |
| |
| bool bUnicode = |
| FXFT_Select_Charmap(m_Font.GetFace(), FXFT_ENCODING_UNICODE) == 0; |
| for (uint32_t charcode = 0; charcode < 256; charcode++) { |
| const char* name = |
| GetAdobeCharName(m_BaseEncoding, m_CharNames, charcode); |
| if (!name) |
| continue; |
| |
| m_Encoding.m_Unicodes[charcode] = PDF_UnicodeFromAdobeName(name); |
| const char* pStrUnicode = GlyphNameRemap(name); |
| if (pStrUnicode && FXFT_Get_Name_Index(m_Font.GetFace(), name) == 0) { |
| name = pStrUnicode; |
| } |
| m_GlyphIndex[charcode] = FXFT_Get_Name_Index(m_Font.GetFace(), name); |
| SetExtGID(name, charcode); |
| if (m_GlyphIndex[charcode] != 0) |
| continue; |
| |
| if (strcmp(name, ".notdef") != 0 && strcmp(name, "space") != 0) { |
| m_GlyphIndex[charcode] = FXFT_Get_Char_Index( |
| m_Font.GetFace(), |
| bUnicode ? m_Encoding.m_Unicodes[charcode] : charcode); |
| CalcExtGID(charcode); |
| } else { |
| m_Encoding.m_Unicodes[charcode] = 0x20; |
| m_GlyphIndex[charcode] = |
| bUnicode ? FXFT_Get_Char_Index(m_Font.GetFace(), 0x20) : 0xffff; |
| CalcExtGID(charcode); |
| } |
| } |
| return; |
| } |
| #endif // _FX_PLATFORM_ == _FX_PLATFORM_APPLE_ |
| if (FontStyleIsSymbolic(m_Flags)) { |
| for (int charcode = 0; charcode < 256; charcode++) { |
| const char* name = |
| GetAdobeCharName(m_BaseEncoding, m_CharNames, charcode); |
| if (name) { |
| m_Encoding.m_Unicodes[charcode] = PDF_UnicodeFromAdobeName(name); |
| m_GlyphIndex[charcode] = FXFT_Get_Name_Index(m_Font.GetFace(), name); |
| } else { |
| m_GlyphIndex[charcode] = |
| FXFT_Get_Char_Index(m_Font.GetFace(), charcode); |
| if (m_GlyphIndex[charcode]) { |
| wchar_t unicode = |
| FT_UnicodeFromCharCode(PDFFONT_ENCODING_STANDARD, charcode); |
| if (unicode == 0) { |
| char name_glyph[256]; |
| memset(name_glyph, 0, sizeof(name_glyph)); |
| FXFT_Get_Glyph_Name(m_Font.GetFace(), m_GlyphIndex[charcode], |
| name_glyph, 256); |
| name_glyph[255] = 0; |
| if (name_glyph[0] != 0) |
| unicode = PDF_UnicodeFromAdobeName(name_glyph); |
| } |
| m_Encoding.m_Unicodes[charcode] = unicode; |
| } |
| } |
| } |
| #if _FX_PLATFORM_ == _FX_PLATFORM_APPLE_ |
| if (!bCoreText) |
| memcpy(m_ExtGID, m_GlyphIndex, 256); |
| |
| #endif |
| return; |
| } |
| |
| bool bUnicode = |
| FXFT_Select_Charmap(m_Font.GetFace(), FXFT_ENCODING_UNICODE) == 0; |
| for (int charcode = 0; charcode < 256; charcode++) { |
| const char* name = GetAdobeCharName(m_BaseEncoding, m_CharNames, charcode); |
| if (!name) |
| continue; |
| |
| m_Encoding.m_Unicodes[charcode] = PDF_UnicodeFromAdobeName(name); |
| m_GlyphIndex[charcode] = FXFT_Get_Name_Index(m_Font.GetFace(), name); |
| if (m_GlyphIndex[charcode] != 0) |
| continue; |
| |
| if (strcmp(name, ".notdef") != 0 && strcmp(name, "space") != 0) { |
| m_GlyphIndex[charcode] = FXFT_Get_Char_Index( |
| m_Font.GetFace(), |
| bUnicode ? m_Encoding.m_Unicodes[charcode] : charcode); |
| } else { |
| m_Encoding.m_Unicodes[charcode] = 0x20; |
| m_GlyphIndex[charcode] = 0xffff; |
| } |
| } |
| #if _FX_PLATFORM_ == _FX_PLATFORM_APPLE_ |
| if (!bCoreText) |
| memcpy(m_ExtGID, m_GlyphIndex, 256); |
| #endif |
| } |
| |
| #if _FX_PLATFORM_ == _FX_PLATFORM_APPLE_ |
| void CPDF_Type1Font::SetExtGID(const char* name, uint32_t charcode) { |
| CFStringRef name_ct = CFStringCreateWithCStringNoCopy( |
| kCFAllocatorDefault, name, kCFStringEncodingASCII, kCFAllocatorNull); |
| m_ExtGID[charcode] = |
| CGFontGetGlyphWithGlyphName((CGFontRef)m_Font.GetPlatformFont(), name_ct); |
| if (name_ct) |
| CFRelease(name_ct); |
| } |
| |
| void CPDF_Type1Font::CalcExtGID(uint32_t charcode) { |
| char name_glyph[256]; |
| FXFT_Get_Glyph_Name(m_Font.GetFace(), m_GlyphIndex[charcode], name_glyph, |
| 256); |
| name_glyph[255] = 0; |
| SetExtGID(name_glyph, charcode); |
| } |
| #endif // _FX_PLATFORM_ == _FX_PLATFORM_APPLE_ |
