| // 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/pwl/cpwl_font_map.h" |
| |
| #include <utility> |
| |
| #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 "core/fxcrt/fx_codepage.h" |
| #include "fpdfsdk/pwl/cpwl_wnd.h" |
| #include "third_party/base/ptr_util.h" |
| #include "third_party/base/stl_util.h" |
| |
| namespace { |
| |
| 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_Font* CPWL_FontMap::GetPDFFont(int32_t nFontIndex) { |
| if (pdfium::IndexInBounds(m_Data, nFontIndex) && m_Data[nFontIndex]) |
| return m_Data[nFontIndex]->pFont; |
| |
| return nullptr; |
| } |
| |
| ByteString CPWL_FontMap::GetPDFFontAlias(int32_t nFontIndex) { |
| if (pdfium::IndexInBounds(m_Data, nFontIndex) && m_Data[nFontIndex]) |
| return m_Data[nFontIndex]->sFontName; |
| |
| return ByteString(); |
| } |
| |
| bool CPWL_FontMap::KnowWord(int32_t nFontIndex, uint16_t word) { |
| return pdfium::IndexInBounds(m_Data, nFontIndex) && m_Data[nFontIndex] && |
| CharCodeFromUnicode(nFontIndex, word) >= 0; |
| } |
| |
| 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 == FX_CHARSET_Default || |
| pData->nCharset == FX_CHARSET_Symbol || 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(CFX_Font::kUniversalDefaultFontName, |
| FX_CHARSET_Default, false); |
| if (nNewFontIndex >= 0) { |
| if (KnowWord(nNewFontIndex, word)) |
| return nNewFontIndex; |
| } |
| return -1; |
| } |
| |
| int32_t CPWL_FontMap::CharCodeFromUnicode(int32_t nFontIndex, uint16_t word) { |
| if (!pdfium::IndexInBounds(m_Data, nFontIndex)) |
| return -1; |
| |
| CPWL_FontMap_Data* pData = m_Data[nFontIndex].get(); |
| if (!pData || !pData->pFont) |
| return -1; |
| |
| if (pData->pFont->IsUnicodeCompatible()) |
| return pData->pFont->CharCodeFromUnicode(word); |
| |
| return word < 0xFF ? word : -1; |
| } |
| |
| ByteString CPWL_FontMap::GetNativeFontName(int32_t nCharset) { |
| for (const auto& pData : m_NativeFont) { |
| if (pData && pData->nCharset == nCharset) |
| return pData->sFontName; |
| } |
| |
| ByteString sNew = GetNativeFont(nCharset); |
| if (sNew.IsEmpty()) |
| return ByteString(); |
| |
| auto pNewData = pdfium::MakeUnique<CPWL_FontMap_Native>(); |
| pNewData->nCharset = nCharset; |
| pNewData->sFontName = sNew; |
| m_NativeFont.push_back(std::move(pNewData)); |
| return sNew; |
| } |
| |
| void CPWL_FontMap::Empty() { |
| m_Data.clear(); |
| m_NativeFont.clear(); |
| } |
| |
| void CPWL_FontMap::Initialize() { |
| GetFontIndex(CFX_Font::kDefaultAnsiFontName, FX_CHARSET_ANSI, false); |
| } |
| |
| bool CPWL_FontMap::IsStandardFont(const ByteString& sFontName) { |
| for (const char* name : g_sDEStandardFontName) { |
| if (sFontName == name) |
| return true; |
| } |
| |
| return false; |
| } |
| |
| int32_t CPWL_FontMap::FindFont(const ByteString& sFontName, int32_t nCharset) { |
| int32_t i = 0; |
| for (const auto& pData : m_Data) { |
| if (pData && |
| (nCharset == FX_CHARSET_Default || nCharset == pData->nCharset) && |
| (sFontName.IsEmpty() || pData->sFontName == sFontName)) { |
| return i; |
| } |
| ++i; |
| } |
| return -1; |
| } |
| |
| int32_t CPWL_FontMap::GetFontIndex(const ByteString& sFontName, |
| int32_t nCharset, |
| bool bFind) { |
| int32_t nFontIndex = FindFont(EncodeFontAlias(sFontName, nCharset), nCharset); |
| if (nFontIndex >= 0) |
| return nFontIndex; |
| |
| ByteString sAlias; |
| CPDF_Font* pFont = bFind ? FindFontSameCharset(&sAlias, nCharset) : nullptr; |
| if (!pFont) { |
| ByteString sTemp = sFontName; |
| pFont = AddFontToDocument(GetDocument(), sTemp, nCharset); |
| sAlias = EncodeFontAlias(sTemp, nCharset); |
| } |
| AddedFont(pFont, sAlias); |
| return AddFontData(pFont, sAlias, nCharset); |
| } |
| |
| int32_t CPWL_FontMap::AddFontData(CPDF_Font* pFont, |
| const ByteString& sFontAlias, |
| int32_t nCharset) { |
| auto pNewData = pdfium::MakeUnique<CPWL_FontMap_Data>(); |
| pNewData->pFont = pFont; |
| pNewData->sFontName = sFontAlias; |
| pNewData->nCharset = nCharset; |
| m_Data.push_back(std::move(pNewData)); |
| return pdfium::CollectionSize<int32_t>(m_Data) - 1; |
| } |
| |
| ByteString CPWL_FontMap::GetNativeFont(int32_t nCharset) { |
| if (nCharset == FX_CHARSET_Default) |
| nCharset = GetNativeCharset(); |
| |
| ByteString sFontName = CFX_Font::GetDefaultFontNameByCharset(nCharset); |
| if (!m_pSystemHandler->FindNativeTrueTypeFont(sFontName)) |
| return ByteString(); |
| |
| return sFontName; |
| } |
| |
| CPDF_Font* CPWL_FontMap::AddFontToDocument(CPDF_Document* pDoc, |
| 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, |
| 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, |
| ByteString& sFontName, |
| uint8_t nCharset) { |
| if (!pDoc) |
| return nullptr; |
| |
| if (sFontName.IsEmpty()) |
| sFontName = GetNativeFont(nCharset); |
| if (nCharset == FX_CHARSET_Default) |
| nCharset = GetNativeCharset(); |
| |
| return m_pSystemHandler->AddNativeTrueTypeFontToPDF(pDoc, sFontName, |
| nCharset); |
| } |
| |
| ByteString CPWL_FontMap::EncodeFontAlias(const ByteString& sFontName, |
| int32_t nCharset) { |
| return EncodeFontAlias(sFontName) + ByteString::Format("_%02X", nCharset); |
| } |
| |
| ByteString CPWL_FontMap::EncodeFontAlias(const ByteString& sFontName) { |
| ByteString sRet = sFontName; |
| sRet.Remove(' '); |
| return sRet; |
| } |
| |
| const CPWL_FontMap_Data* CPWL_FontMap::GetFontMapData(int32_t nIndex) const { |
| return pdfium::IndexInBounds(m_Data, nIndex) ? m_Data[nIndex].get() : nullptr; |
| } |
| |
| int32_t CPWL_FontMap::GetNativeCharset() { |
| return FX_GetCharsetFromCodePage(FXSYS_GetACP()); |
| } |
| |
| int32_t CPWL_FontMap::CharSetFromUnicode(uint16_t word, int32_t nOldCharset) { |
| // to avoid CJK Font to show ASCII |
| if (word < 0x7F) |
| return FX_CHARSET_ANSI; |
| |
| // follow the old charset |
| if (nOldCharset != FX_CHARSET_Default) |
| return nOldCharset; |
| |
| return CFX_Font::GetCharSetFromUnicode(word); |
| } |