// Copyright 2017 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 "xfa/fgas/font/cfgas_pdffontmgr.h" #include <algorithm> #include "core/fpdfapi/font/cpdf_font.h" #include "core/fpdfapi/parser/cpdf_document.h" #include "xfa/fgas/font/cfgas_fontmgr.h" #include "xfa/fgas/font/cfgas_gefont.h" namespace { // The 5 names per entry are: PsName, Normal, Bold, Italic, BoldItalic. const char* const g_XFAPDFFontName[][5] = { {"Adobe PI Std", "AdobePIStd", "AdobePIStd", "AdobePIStd", "AdobePIStd"}, {"Myriad Pro Light", "MyriadPro-Light", "MyriadPro-Semibold", "MyriadPro-LightIt", "MyriadPro-SemiboldIt"}, }; } // namespace CFGAS_PDFFontMgr::CFGAS_PDFFontMgr(CPDF_Document* pDoc, CFGAS_FontMgr* pFontMgr) : m_pDoc(pDoc), m_pFontMgr(pFontMgr) { ASSERT(pDoc); ASSERT(pFontMgr); } CFGAS_PDFFontMgr::~CFGAS_PDFFontMgr() {} RetainPtr<CFGAS_GEFont> CFGAS_PDFFontMgr::FindFont(const ByteString& strPsName, bool bBold, bool bItalic, CPDF_Font** pDstPDFFont, bool bStrictMatch) { CPDF_Dictionary* pFontSetDict = m_pDoc->GetRoot()->GetDictFor("AcroForm")->GetDictFor("DR"); if (!pFontSetDict) return nullptr; pFontSetDict = pFontSetDict->GetDictFor("Font"); if (!pFontSetDict) return nullptr; ByteString name = strPsName; name.Remove(' '); for (const auto& it : *pFontSetDict) { const ByteString& key = it.first; CPDF_Object* pObj = it.second.get(); if (!PsNameMatchDRFontName(name.AsStringView(), bBold, bItalic, key, bStrictMatch)) { continue; } CPDF_Dictionary* pFontDict = ToDictionary(pObj->GetDirect()); if (!pFontDict || pFontDict->GetStringFor("Type") != "Font") return nullptr; CPDF_Font* pPDFFont = m_pDoc->LoadFont(pFontDict); if (!pPDFFont) return nullptr; if (!pPDFFont->IsEmbedded()) { *pDstPDFFont = pPDFFont; return nullptr; } return CFGAS_GEFont::LoadFont(pPDFFont->GetFont(), m_pFontMgr.Get()); } return nullptr; } RetainPtr<CFGAS_GEFont> CFGAS_PDFFontMgr::GetFont( const WideStringView& wsFontFamily, uint32_t dwFontStyles, CPDF_Font** pPDFFont, bool bStrictMatch) { uint32_t dwHashCode = FX_HashCode_GetW(wsFontFamily, false); ByteString strKey = ByteString::Format("%u%u", dwHashCode, dwFontStyles); auto it = m_FontMap.find(strKey); if (it != m_FontMap.end()) return it->second; ByteString bsPsName = ByteString::FromUnicode(WideString(wsFontFamily)); bool bBold = FontStyleIsBold(dwFontStyles); bool bItalic = FontStyleIsItalic(dwFontStyles); ByteString strFontName = PsNameToFontName(bsPsName, bBold, bItalic); RetainPtr<CFGAS_GEFont> pFont = FindFont(strFontName, bBold, bItalic, pPDFFont, bStrictMatch); if (pFont) m_FontMap[strKey] = pFont; return pFont; } ByteString CFGAS_PDFFontMgr::PsNameToFontName(const ByteString& strPsName, bool bBold, bool bItalic) { for (size_t i = 0; i < FX_ArraySize(g_XFAPDFFontName); ++i) { if (strPsName == g_XFAPDFFontName[i][0]) { size_t index = 1; if (bBold) ++index; if (bItalic) index += 2; return g_XFAPDFFontName[i][index]; } } return strPsName; } bool CFGAS_PDFFontMgr::PsNameMatchDRFontName(const ByteStringView& bsPsName, bool bBold, bool bItalic, const ByteString& bsDRFontName, bool bStrictMatch) { ByteString bsDRName = bsDRFontName; bsDRName.Remove('-'); size_t iPsLen = bsPsName.GetLength(); auto nIndex = bsDRName.Find(bsPsName); if (nIndex.has_value() && !bStrictMatch) return true; if (!nIndex.has_value() || nIndex.value() != 0) return false; size_t iDifferLength = bsDRName.GetLength() - iPsLen; if (iDifferLength > 1 || (bBold || bItalic)) { auto iBoldIndex = bsDRName.Find("Bold"); if (bBold != iBoldIndex.has_value()) return false; if (iBoldIndex.has_value()) { iDifferLength = std::min(iDifferLength - 4, bsDRName.GetLength() - iBoldIndex.value() - 4); } bool bItalicFont = true; if (bsDRName.Contains("Italic")) iDifferLength -= 6; else if (bsDRName.Contains("It")) iDifferLength -= 2; else if (bsDRName.Contains("Oblique")) iDifferLength -= 7; else bItalicFont = false; if (bItalic != bItalicFont) return false; if (iDifferLength > 1) { ByteString bsDRTailer = bsDRName.Right(iDifferLength); if (bsDRTailer == "MT" || bsDRTailer == "PSMT" || bsDRTailer == "Regular" || bsDRTailer == "Reg") { return true; } if (iBoldIndex.has_value() || bItalicFont) return false; bool bMatch = false; switch (bsPsName[iPsLen - 1]) { case 'L': if (bsDRName.Right(5) == "Light") bMatch = true; break; case 'R': if (bsDRName.Right(7) == "Regular" || bsDRName.Right(3) == "Reg") bMatch = true; break; case 'M': if (bsDRName.Right(5) == "Medium") bMatch = true; break; default: break; } return bMatch; } } return true; } void CFGAS_PDFFontMgr::SetFont(const RetainPtr<CFGAS_GEFont>& pFont, CPDF_Font* pPDFFont) { m_FDE2PDFFont[pFont] = pPDFFont; }