// Copyright 2014 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 "fpdfsdk/pdfwindow/PWL_FontMap.h" #include "core/fpdfapi/cpdf_modulemgr.h" #include "core/fpdfapi/font/cpdf_font.h" #include "core/fpdfapi/font/cpdf_fontencoding.h" #include "core/fpdfapi/parser/cpdf_document.h" #include "core/fpdfapi/parser/cpdf_parser.h" #include "core/fpdfdoc/ipvt_fontmap.h" #include "fpdfsdk/pdfwindow/PWL_Wnd.h" #include "third_party/base/ptr_util.h" namespace { const char kDefaultFontName[] = "Helvetica"; const char* const g_sDEStandardFontName[] = {"Courier", "Courier-Bold", "Courier-BoldOblique", "Courier-Oblique", "Helvetica", "Helvetica-Bold", "Helvetica-BoldOblique", "Helvetica-Oblique", "Times-Roman", "Times-Bold", "Times-Italic", "Times-BoldItalic", "Symbol", "ZapfDingbats"}; } // namespace CPWL_FontMap::CPWL_FontMap(CFX_SystemHandler* pSystemHandler) : m_pSystemHandler(pSystemHandler) { ASSERT(m_pSystemHandler); } CPWL_FontMap::~CPWL_FontMap() { Empty(); } CPDF_Document* CPWL_FontMap::GetDocument() { if (!m_pPDFDoc) { if (CPDF_ModuleMgr::Get()) { m_pPDFDoc = pdfium::MakeUnique<CPDF_Document>(std::unique_ptr<CPDF_Parser>()); m_pPDFDoc->CreateNewDoc(); } } return m_pPDFDoc.get(); } CPDF_Font* CPWL_FontMap::GetPDFFont(int32_t nFontIndex) { if (nFontIndex >= 0 && nFontIndex < m_aData.GetSize()) { if (CPWL_FontMap_Data* pData = m_aData.GetAt(nFontIndex)) { return pData->pFont; } } return nullptr; } CFX_ByteString CPWL_FontMap::GetPDFFontAlias(int32_t nFontIndex) { if (nFontIndex >= 0 && nFontIndex < m_aData.GetSize()) { if (CPWL_FontMap_Data* pData = m_aData.GetAt(nFontIndex)) { return pData->sFontName; } } return ""; } FX_BOOL CPWL_FontMap::KnowWord(int32_t nFontIndex, uint16_t word) { if (nFontIndex >= 0 && nFontIndex < m_aData.GetSize()) { if (m_aData.GetAt(nFontIndex)) { return CharCodeFromUnicode(nFontIndex, word) >= 0; } } return FALSE; } int32_t CPWL_FontMap::GetWordFontIndex(uint16_t word, int32_t nCharset, int32_t nFontIndex) { if (nFontIndex > 0) { if (KnowWord(nFontIndex, word)) return nFontIndex; } else { if (const CPWL_FontMap_Data* pData = GetFontMapData(0)) { if (nCharset == FXFONT_DEFAULT_CHARSET || pData->nCharset == FXFONT_SYMBOL_CHARSET || nCharset == pData->nCharset) { if (KnowWord(0, word)) return 0; } } } int32_t nNewFontIndex = GetFontIndex(GetNativeFontName(nCharset), nCharset, TRUE); if (nNewFontIndex >= 0) { if (KnowWord(nNewFontIndex, word)) return nNewFontIndex; } nNewFontIndex = GetFontIndex("Arial Unicode MS", FXFONT_DEFAULT_CHARSET, FALSE); if (nNewFontIndex >= 0) { if (KnowWord(nNewFontIndex, word)) return nNewFontIndex; } return -1; } int32_t CPWL_FontMap::CharCodeFromUnicode(int32_t nFontIndex, uint16_t word) { CPWL_FontMap_Data* pData = m_aData.GetAt(nFontIndex); if (!pData) return -1; if (!pData->pFont) return -1; if (pData->pFont->IsUnicodeCompatible()) return pData->pFont->CharCodeFromUnicode(word); return word < 0xFF ? word : -1; } CFX_ByteString CPWL_FontMap::GetNativeFontName(int32_t nCharset) { // searching native font is slow, so we must save time for (int32_t i = 0, sz = m_aNativeFont.GetSize(); i < sz; i++) { if (CPWL_FontMap_Native* pData = m_aNativeFont.GetAt(i)) { if (pData->nCharset == nCharset) return pData->sFontName; } } CFX_ByteString sNew = GetNativeFont(nCharset); if (!sNew.IsEmpty()) { CPWL_FontMap_Native* pNewData = new CPWL_FontMap_Native; pNewData->nCharset = nCharset; pNewData->sFontName = sNew; m_aNativeFont.Add(pNewData); } return sNew; } void CPWL_FontMap::Empty() { { for (int32_t i = 0, sz = m_aData.GetSize(); i < sz; i++) delete m_aData.GetAt(i); m_aData.RemoveAll(); } { for (int32_t i = 0, sz = m_aNativeFont.GetSize(); i < sz; i++) delete m_aNativeFont.GetAt(i); m_aNativeFont.RemoveAll(); } } void CPWL_FontMap::Initialize() { GetFontIndex(kDefaultFontName, FXFONT_ANSI_CHARSET, FALSE); } FX_BOOL CPWL_FontMap::IsStandardFont(const CFX_ByteString& sFontName) { for (size_t i = 0; i < FX_ArraySize(g_sDEStandardFontName); ++i) { if (sFontName == g_sDEStandardFontName[i]) return TRUE; } return FALSE; } int32_t CPWL_FontMap::FindFont(const CFX_ByteString& sFontName, int32_t nCharset) { for (int32_t i = 0, sz = m_aData.GetSize(); i < sz; i++) { if (CPWL_FontMap_Data* pData = m_aData.GetAt(i)) { if (nCharset == FXFONT_DEFAULT_CHARSET || nCharset == pData->nCharset) { if (sFontName.IsEmpty() || pData->sFontName == sFontName) return i; } } } return -1; } int32_t CPWL_FontMap::GetFontIndex(const CFX_ByteString& sFontName, int32_t nCharset, FX_BOOL bFind) { int32_t nFontIndex = FindFont(EncodeFontAlias(sFontName, nCharset), nCharset); if (nFontIndex >= 0) return nFontIndex; CFX_ByteString sAlias; CPDF_Font* pFont = nullptr; if (bFind) pFont = FindFontSameCharset(sAlias, nCharset); if (!pFont) { CFX_ByteString sTemp = sFontName; pFont = AddFontToDocument(GetDocument(), sTemp, nCharset); sAlias = EncodeFontAlias(sTemp, nCharset); } AddedFont(pFont, sAlias); return AddFontData(pFont, sAlias, nCharset); } CPDF_Font* CPWL_FontMap::FindFontSameCharset(CFX_ByteString& sFontAlias, int32_t nCharset) { return nullptr; } int32_t CPWL_FontMap::AddFontData(CPDF_Font* pFont, const CFX_ByteString& sFontAlias, int32_t nCharset) { CPWL_FontMap_Data* pNewData = new CPWL_FontMap_Data; pNewData->pFont = pFont; pNewData->sFontName = sFontAlias; pNewData->nCharset = nCharset; m_aData.Add(pNewData); return m_aData.GetSize() - 1; } void CPWL_FontMap::AddedFont(CPDF_Font* pFont, const CFX_ByteString& sFontAlias) {} CFX_ByteString CPWL_FontMap::GetNativeFont(int32_t nCharset) { if (nCharset == FXFONT_DEFAULT_CHARSET) nCharset = GetNativeCharset(); CFX_ByteString sFontName = GetDefaultFontByCharset(nCharset); if (m_pSystemHandler->FindNativeTrueTypeFont(sFontName)) return sFontName; sFontName.clear(); return sFontName; } CPDF_Font* CPWL_FontMap::AddFontToDocument(CPDF_Document* pDoc, CFX_ByteString& sFontName, uint8_t nCharset) { if (IsStandardFont(sFontName)) return AddStandardFont(pDoc, sFontName); return AddSystemFont(pDoc, sFontName, nCharset); } CPDF_Font* CPWL_FontMap::AddStandardFont(CPDF_Document* pDoc, CFX_ByteString& sFontName) { if (!pDoc) return nullptr; CPDF_Font* pFont = nullptr; if (sFontName == "ZapfDingbats") { pFont = pDoc->AddStandardFont(sFontName.c_str(), nullptr); } else { CPDF_FontEncoding fe(PDFFONT_ENCODING_WINANSI); pFont = pDoc->AddStandardFont(sFontName.c_str(), &fe); } return pFont; } CPDF_Font* CPWL_FontMap::AddSystemFont(CPDF_Document* pDoc, CFX_ByteString& sFontName, uint8_t nCharset) { if (!pDoc) return nullptr; if (sFontName.IsEmpty()) sFontName = GetNativeFont(nCharset); if (nCharset == FXFONT_DEFAULT_CHARSET) nCharset = GetNativeCharset(); return m_pSystemHandler->AddNativeTrueTypeFontToPDF(pDoc, sFontName, nCharset); } CFX_ByteString CPWL_FontMap::EncodeFontAlias(const CFX_ByteString& sFontName, int32_t nCharset) { CFX_ByteString sPostfix; sPostfix.Format("_%02X", nCharset); return EncodeFontAlias(sFontName) + sPostfix; } CFX_ByteString CPWL_FontMap::EncodeFontAlias(const CFX_ByteString& sFontName) { CFX_ByteString sRet = sFontName; sRet.Remove(' '); return sRet; } const CPWL_FontMap_Data* CPWL_FontMap::GetFontMapData(int32_t nIndex) const { if (nIndex >= 0 && nIndex < m_aData.GetSize()) { return m_aData.GetAt(nIndex); } return nullptr; } int32_t CPWL_FontMap::GetNativeCharset() { uint8_t nCharset = FXFONT_ANSI_CHARSET; int32_t iCodePage = FXSYS_GetACP(); switch (iCodePage) { case 932: // Japan nCharset = FXFONT_SHIFTJIS_CHARSET; break; case 936: // Chinese (PRC, Singapore) nCharset = FXFONT_GB2312_CHARSET; break; case 950: // Chinese (Taiwan; Hong Kong SAR, PRC) nCharset = FXFONT_GB2312_CHARSET; break; case 1252: // Windows 3.1 Latin 1 (US, Western Europe) nCharset = FXFONT_ANSI_CHARSET; break; case 874: // Thai nCharset = FXFONT_THAI_CHARSET; break; case 949: // Korean nCharset = FXFONT_HANGUL_CHARSET; break; case 1200: // Unicode (BMP of ISO 10646) nCharset = FXFONT_ANSI_CHARSET; break; case 1250: // Windows 3.1 Eastern European nCharset = FXFONT_EASTEUROPE_CHARSET; break; case 1251: // Windows 3.1 Cyrillic nCharset = FXFONT_RUSSIAN_CHARSET; break; case 1253: // Windows 3.1 Greek nCharset = FXFONT_GREEK_CHARSET; break; case 1254: // Windows 3.1 Turkish nCharset = FXFONT_TURKISH_CHARSET; break; case 1255: // Hebrew nCharset = FXFONT_HEBREW_CHARSET; break; case 1256: // Arabic nCharset = FXFONT_ARABIC_CHARSET; break; case 1257: // Baltic nCharset = FXFONT_BALTIC_CHARSET; break; case 1258: // Vietnamese nCharset = FXFONT_VIETNAMESE_CHARSET; break; case 1361: // Korean(Johab) nCharset = FXFONT_JOHAB_CHARSET; break; } return nCharset; } const FPDF_CharsetFontMap CPWL_FontMap::defaultTTFMap[] = { {FXFONT_ANSI_CHARSET, "Helvetica"}, {FXFONT_GB2312_CHARSET, "SimSun"}, {FXFONT_CHINESEBIG5_CHARSET, "MingLiU"}, {FXFONT_SHIFTJIS_CHARSET, "MS Gothic"}, {FXFONT_HANGUL_CHARSET, "Batang"}, {FXFONT_RUSSIAN_CHARSET, "Arial"}, #if _FXM_PLATFORM_ == _FXM_PLATFORM_LINUX_ || \ _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_ {FXFONT_EASTEUROPE_CHARSET, "Arial"}, #else {FXFONT_EASTEUROPE_CHARSET, "Tahoma"}, #endif {FXFONT_ARABIC_CHARSET, "Arial"}, {-1, nullptr}}; CFX_ByteString CPWL_FontMap::GetDefaultFontByCharset(int32_t nCharset) { int i = 0; while (defaultTTFMap[i].charset != -1) { if (nCharset == defaultTTFMap[i].charset) return defaultTTFMap[i].fontname; ++i; } return ""; } int32_t CPWL_FontMap::CharSetFromUnicode(uint16_t word, int32_t nOldCharset) { // to avoid CJK Font to show ASCII if (word < 0x7F) return FXFONT_ANSI_CHARSET; // follow the old charset if (nOldCharset != FXFONT_DEFAULT_CHARSET) return nOldCharset; // find new charset if ((word >= 0x4E00 && word <= 0x9FA5) || (word >= 0xE7C7 && word <= 0xE7F3) || (word >= 0x3000 && word <= 0x303F) || (word >= 0x2000 && word <= 0x206F)) { return FXFONT_GB2312_CHARSET; } if (((word >= 0x3040) && (word <= 0x309F)) || ((word >= 0x30A0) && (word <= 0x30FF)) || ((word >= 0x31F0) && (word <= 0x31FF)) || ((word >= 0xFF00) && (word <= 0xFFEF))) { return FXFONT_SHIFTJIS_CHARSET; } if (((word >= 0xAC00) && (word <= 0xD7AF)) || ((word >= 0x1100) && (word <= 0x11FF)) || ((word >= 0x3130) && (word <= 0x318F))) { return FXFONT_HANGUL_CHARSET; } if (word >= 0x0E00 && word <= 0x0E7F) return FXFONT_THAI_CHARSET; if ((word >= 0x0370 && word <= 0x03FF) || (word >= 0x1F00 && word <= 0x1FFF)) return FXFONT_GREEK_CHARSET; if ((word >= 0x0600 && word <= 0x06FF) || (word >= 0xFB50 && word <= 0xFEFC)) return FXFONT_ARABIC_CHARSET; if (word >= 0x0590 && word <= 0x05FF) return FXFONT_HEBREW_CHARSET; if (word >= 0x0400 && word <= 0x04FF) return FXFONT_RUSSIAN_CHARSET; if (word >= 0x0100 && word <= 0x024F) return FXFONT_EASTEUROPE_CHARSET; if (word >= 0x1E00 && word <= 0x1EFF) return FXFONT_VIETNAMESE_CHARSET; return FXFONT_ANSI_CHARSET; }