// Copyright 2014 PDFium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#include "fpdfsdk/pdfwindow/PWL_FontMap.h"
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#include "core/fpdfapi/fpdf_font/include/cpdf_font.h"
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#include "core/fpdfapi/fpdf_font/include/cpdf_fontencoding.h"
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#include "core/fpdfapi/fpdf_parser/include/cpdf_document.h"
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#include "core/fpdfapi/include/cpdf_modulemgr.h"
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#include "core/fpdfdoc/include/ipvt_fontmap.h"
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#include "fpdfsdk/pdfwindow/PWL_Wnd.h"
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namespace {
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const char kDefaultFontName[] = "Helvetica";
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const char* const g_sDEStandardFontName[] = {"Courier",
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"Courier-Bold",
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"Courier-BoldOblique",
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"Courier-Oblique",
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"Helvetica",
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"Helvetica-Bold",
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"Helvetica-BoldOblique",
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"Helvetica-Oblique",
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"Times-Roman",
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"Times-Bold",
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"Times-Italic",
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"Times-BoldItalic",
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"Symbol",
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"ZapfDingbats"};
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} // namespace
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CPWL_FontMap::CPWL_FontMap(CFX_SystemHandler* pSystemHandler)
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: m_pPDFDoc(nullptr), m_pSystemHandler(pSystemHandler) {
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ASSERT(m_pSystemHandler);
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}
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CPWL_FontMap::~CPWL_FontMap() {
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delete m_pPDFDoc;
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m_pPDFDoc = nullptr;
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Empty();
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}
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void CPWL_FontMap::SetSystemHandler(CFX_SystemHandler* pSystemHandler) {
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m_pSystemHandler = pSystemHandler;
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}
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CPDF_Document* CPWL_FontMap::GetDocument() {
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if (!m_pPDFDoc) {
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if (CPDF_ModuleMgr::Get()) {
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m_pPDFDoc = new CPDF_Document(nullptr);
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m_pPDFDoc->CreateNewDoc();
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}
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}
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return m_pPDFDoc;
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}
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CPDF_Font* CPWL_FontMap::GetPDFFont(int32_t nFontIndex) {
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if (nFontIndex >= 0 && nFontIndex < m_aData.GetSize()) {
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if (CPWL_FontMap_Data* pData = m_aData.GetAt(nFontIndex)) {
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return pData->pFont;
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}
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}
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return nullptr;
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}
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CFX_ByteString CPWL_FontMap::GetPDFFontAlias(int32_t nFontIndex) {
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if (nFontIndex >= 0 && nFontIndex < m_aData.GetSize()) {
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if (CPWL_FontMap_Data* pData = m_aData.GetAt(nFontIndex)) {
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return pData->sFontName;
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}
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}
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return "";
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}
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FX_BOOL CPWL_FontMap::KnowWord(int32_t nFontIndex, uint16_t word) {
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if (nFontIndex >= 0 && nFontIndex < m_aData.GetSize()) {
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if (m_aData.GetAt(nFontIndex)) {
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return CharCodeFromUnicode(nFontIndex, word) >= 0;
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}
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}
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return FALSE;
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}
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int32_t CPWL_FontMap::GetWordFontIndex(uint16_t word,
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int32_t nCharset,
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int32_t nFontIndex) {
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if (nFontIndex > 0) {
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if (KnowWord(nFontIndex, word))
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return nFontIndex;
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} else {
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if (const CPWL_FontMap_Data* pData = GetFontMapData(0)) {
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if (nCharset == DEFAULT_CHARSET || pData->nCharset == SYMBOL_CHARSET ||
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nCharset == pData->nCharset) {
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if (KnowWord(0, word))
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return 0;
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}
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}
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}
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int32_t nNewFontIndex =
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GetFontIndex(GetNativeFontName(nCharset), nCharset, TRUE);
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if (nNewFontIndex >= 0) {
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if (KnowWord(nNewFontIndex, word))
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return nNewFontIndex;
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}
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nNewFontIndex = GetFontIndex("Arial Unicode MS", DEFAULT_CHARSET, FALSE);
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if (nNewFontIndex >= 0) {
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if (KnowWord(nNewFontIndex, word))
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return nNewFontIndex;
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}
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return -1;
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}
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int32_t CPWL_FontMap::CharCodeFromUnicode(int32_t nFontIndex, uint16_t word) {
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CPWL_FontMap_Data* pData = m_aData.GetAt(nFontIndex);
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if (!pData)
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return -1;
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if (!pData->pFont)
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return -1;
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if (pData->pFont->IsUnicodeCompatible())
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return pData->pFont->CharCodeFromUnicode(word);
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return word < 0xFF ? word : -1;
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}
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CFX_ByteString CPWL_FontMap::GetNativeFontName(int32_t nCharset) {
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// searching native font is slow, so we must save time
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for (int32_t i = 0, sz = m_aNativeFont.GetSize(); i < sz; i++) {
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if (CPWL_FontMap_Native* pData = m_aNativeFont.GetAt(i)) {
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if (pData->nCharset == nCharset)
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return pData->sFontName;
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}
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}
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CFX_ByteString sNew = GetNativeFont(nCharset);
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if (!sNew.IsEmpty()) {
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CPWL_FontMap_Native* pNewData = new CPWL_FontMap_Native;
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pNewData->nCharset = nCharset;
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pNewData->sFontName = sNew;
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m_aNativeFont.Add(pNewData);
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}
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return sNew;
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}
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void CPWL_FontMap::Empty() {
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{
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for (int32_t i = 0, sz = m_aData.GetSize(); i < sz; i++)
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delete m_aData.GetAt(i);
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m_aData.RemoveAll();
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}
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{
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for (int32_t i = 0, sz = m_aNativeFont.GetSize(); i < sz; i++)
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delete m_aNativeFont.GetAt(i);
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m_aNativeFont.RemoveAll();
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}
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}
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void CPWL_FontMap::Initialize() {
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GetFontIndex(kDefaultFontName, ANSI_CHARSET, FALSE);
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}
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FX_BOOL CPWL_FontMap::IsStandardFont(const CFX_ByteString& sFontName) {
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for (size_t i = 0; i < FX_ArraySize(g_sDEStandardFontName); ++i) {
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if (sFontName == g_sDEStandardFontName[i])
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return TRUE;
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}
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return FALSE;
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}
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int32_t CPWL_FontMap::FindFont(const CFX_ByteString& sFontName,
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int32_t nCharset) {
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for (int32_t i = 0, sz = m_aData.GetSize(); i < sz; i++) {
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if (CPWL_FontMap_Data* pData = m_aData.GetAt(i)) {
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if (nCharset == DEFAULT_CHARSET || nCharset == pData->nCharset) {
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if (sFontName.IsEmpty() || pData->sFontName == sFontName)
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return i;
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}
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}
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}
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return -1;
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}
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int32_t CPWL_FontMap::GetFontIndex(const CFX_ByteString& sFontName,
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int32_t nCharset,
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FX_BOOL bFind) {
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int32_t nFontIndex = FindFont(EncodeFontAlias(sFontName, nCharset), nCharset);
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if (nFontIndex >= 0)
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return nFontIndex;
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CFX_ByteString sAlias;
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CPDF_Font* pFont = nullptr;
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if (bFind)
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pFont = FindFontSameCharset(sAlias, nCharset);
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if (!pFont) {
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CFX_ByteString sTemp = sFontName;
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pFont = AddFontToDocument(GetDocument(), sTemp, nCharset);
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sAlias = EncodeFontAlias(sTemp, nCharset);
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}
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AddedFont(pFont, sAlias);
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return AddFontData(pFont, sAlias, nCharset);
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}
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int32_t CPWL_FontMap::GetPWLFontIndex(uint16_t word, int32_t nCharset) {
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int32_t nFind = -1;
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for (int32_t i = 0, sz = m_aData.GetSize(); i < sz; i++) {
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if (CPWL_FontMap_Data* pData = m_aData.GetAt(i)) {
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if (pData->nCharset == nCharset) {
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nFind = i;
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break;
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}
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}
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}
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CPDF_Font* pNewFont = GetPDFFont(nFind);
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if (!pNewFont)
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return -1;
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CFX_ByteString sAlias = EncodeFontAlias("Arial_Chrome", nCharset);
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AddedFont(pNewFont, sAlias);
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return AddFontData(pNewFont, sAlias, nCharset);
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}
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CPDF_Font* CPWL_FontMap::FindFontSameCharset(CFX_ByteString& sFontAlias,
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int32_t nCharset) {
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return nullptr;
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}
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int32_t CPWL_FontMap::AddFontData(CPDF_Font* pFont,
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const CFX_ByteString& sFontAlias,
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int32_t nCharset) {
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CPWL_FontMap_Data* pNewData = new CPWL_FontMap_Data;
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pNewData->pFont = pFont;
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pNewData->sFontName = sFontAlias;
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pNewData->nCharset = nCharset;
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m_aData.Add(pNewData);
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return m_aData.GetSize() - 1;
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}
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void CPWL_FontMap::AddedFont(CPDF_Font* pFont,
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const CFX_ByteString& sFontAlias) {}
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CFX_ByteString CPWL_FontMap::GetFontName(int32_t nFontIndex) {
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if (nFontIndex >= 0 && nFontIndex < m_aData.GetSize()) {
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if (CPWL_FontMap_Data* pData = m_aData.GetAt(nFontIndex)) {
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return pData->sFontName;
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}
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}
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return "";
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}
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CFX_ByteString CPWL_FontMap::GetNativeFont(int32_t nCharset) {
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if (nCharset == DEFAULT_CHARSET)
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nCharset = GetNativeCharset();
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CFX_ByteString sFontName = GetDefaultFontByCharset(nCharset);
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if (m_pSystemHandler) {
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if (m_pSystemHandler->FindNativeTrueTypeFont(sFontName))
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return sFontName;
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sFontName.clear();
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}
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return sFontName;
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}
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CPDF_Font* CPWL_FontMap::AddFontToDocument(CPDF_Document* pDoc,
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CFX_ByteString& sFontName,
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uint8_t nCharset) {
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if (IsStandardFont(sFontName))
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return AddStandardFont(pDoc, sFontName);
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return AddSystemFont(pDoc, sFontName, nCharset);
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}
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CPDF_Font* CPWL_FontMap::AddStandardFont(CPDF_Document* pDoc,
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CFX_ByteString& sFontName) {
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if (!pDoc)
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return nullptr;
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CPDF_Font* pFont = nullptr;
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if (sFontName == "ZapfDingbats") {
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pFont = pDoc->AddStandardFont(sFontName.c_str(), nullptr);
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} else {
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CPDF_FontEncoding fe(PDFFONT_ENCODING_WINANSI);
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pFont = pDoc->AddStandardFont(sFontName.c_str(), &fe);
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}
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return pFont;
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}
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CPDF_Font* CPWL_FontMap::AddSystemFont(CPDF_Document* pDoc,
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CFX_ByteString& sFontName,
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uint8_t nCharset) {
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if (!pDoc)
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return nullptr;
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if (sFontName.IsEmpty())
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sFontName = GetNativeFont(nCharset);
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if (nCharset == DEFAULT_CHARSET)
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nCharset = GetNativeCharset();
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if (m_pSystemHandler)
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return m_pSystemHandler->AddNativeTrueTypeFontToPDF(pDoc, sFontName,
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nCharset);
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return nullptr;
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}
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CFX_ByteString CPWL_FontMap::EncodeFontAlias(const CFX_ByteString& sFontName,
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int32_t nCharset) {
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CFX_ByteString sPostfix;
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sPostfix.Format("_%02X", nCharset);
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return EncodeFontAlias(sFontName) + sPostfix;
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}
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CFX_ByteString CPWL_FontMap::EncodeFontAlias(const CFX_ByteString& sFontName) {
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CFX_ByteString sRet = sFontName;
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sRet.Remove(' ');
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return sRet;
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}
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int32_t CPWL_FontMap::GetFontMapCount() const {
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return m_aData.GetSize();
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}
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const CPWL_FontMap_Data* CPWL_FontMap::GetFontMapData(int32_t nIndex) const {
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if (nIndex >= 0 && nIndex < m_aData.GetSize()) {
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return m_aData.GetAt(nIndex);
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}
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return nullptr;
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}
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int32_t CPWL_FontMap::GetNativeCharset() {
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uint8_t nCharset = ANSI_CHARSET;
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int32_t iCodePage = FXSYS_GetACP();
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switch (iCodePage) {
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case 932: // Japan
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nCharset = SHIFTJIS_CHARSET;
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break;
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case 936: // Chinese (PRC, Singapore)
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nCharset = GB2312_CHARSET;
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break;
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case 950: // Chinese (Taiwan; Hong Kong SAR, PRC)
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nCharset = GB2312_CHARSET;
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break;
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case 1252: // Windows 3.1 Latin 1 (US, Western Europe)
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nCharset = ANSI_CHARSET;
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break;
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case 874: // Thai
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nCharset = THAI_CHARSET;
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break;
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case 949: // Korean
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nCharset = HANGUL_CHARSET;
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break;
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case 1200: // Unicode (BMP of ISO 10646)
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nCharset = ANSI_CHARSET;
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break;
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case 1250: // Windows 3.1 Eastern European
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nCharset = EASTEUROPE_CHARSET;
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break;
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case 1251: // Windows 3.1 Cyrillic
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nCharset = RUSSIAN_CHARSET;
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break;
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case 1253: // Windows 3.1 Greek
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nCharset = GREEK_CHARSET;
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break;
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case 1254: // Windows 3.1 Turkish
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nCharset = TURKISH_CHARSET;
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break;
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case 1255: // Hebrew
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nCharset = HEBREW_CHARSET;
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break;
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case 1256: // Arabic
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nCharset = ARABIC_CHARSET;
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break;
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case 1257: // Baltic
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nCharset = BALTIC_CHARSET;
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break;
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case 1258: // Vietnamese
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nCharset = VIETNAMESE_CHARSET;
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break;
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case 1361: // Korean(Johab)
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nCharset = JOHAB_CHARSET;
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break;
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}
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return nCharset;
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}
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const CPWL_FontMap::CharsetFontMap CPWL_FontMap::defaultTTFMap[] = {
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{ANSI_CHARSET, "Helvetica"}, {GB2312_CHARSET, "SimSun"},
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{CHINESEBIG5_CHARSET, "MingLiU"}, {SHIFTJIS_CHARSET, "MS Gothic"},
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{HANGUL_CHARSET, "Batang"}, {RUSSIAN_CHARSET, "Arial"},
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#if _FXM_PLATFORM_ == _FXM_PLATFORM_LINUX_ || \
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_FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
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{EASTEUROPE_CHARSET, "Arial"},
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#else
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{EASTEUROPE_CHARSET, "Tahoma"},
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#endif
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{ARABIC_CHARSET, "Arial"}, {-1, nullptr}};
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CFX_ByteString CPWL_FontMap::GetDefaultFontByCharset(int32_t nCharset) {
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int i = 0;
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while (defaultTTFMap[i].charset != -1) {
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if (nCharset == defaultTTFMap[i].charset)
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return defaultTTFMap[i].fontname;
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++i;
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}
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return "";
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}
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int32_t CPWL_FontMap::CharSetFromUnicode(uint16_t word, int32_t nOldCharset) {
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// to avoid CJK Font to show ASCII
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if (word < 0x7F)
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return ANSI_CHARSET;
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// follow the old charset
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if (nOldCharset != DEFAULT_CHARSET)
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return nOldCharset;
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// find new charset
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if ((word >= 0x4E00 && word <= 0x9FA5) ||
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(word >= 0xE7C7 && word <= 0xE7F3) ||
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(word >= 0x3000 && word <= 0x303F) ||
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(word >= 0x2000 && word <= 0x206F)) {
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return GB2312_CHARSET;
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}
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if (((word >= 0x3040) && (word <= 0x309F)) ||
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((word >= 0x30A0) && (word <= 0x30FF)) ||
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((word >= 0x31F0) && (word <= 0x31FF)) ||
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((word >= 0xFF00) && (word <= 0xFFEF))) {
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return SHIFTJIS_CHARSET;
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}
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if (((word >= 0xAC00) && (word <= 0xD7AF)) ||
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((word >= 0x1100) && (word <= 0x11FF)) ||
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((word >= 0x3130) && (word <= 0x318F))) {
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return HANGUL_CHARSET;
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}
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if (word >= 0x0E00 && word <= 0x0E7F)
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return THAI_CHARSET;
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if ((word >= 0x0370 && word <= 0x03FF) || (word >= 0x1F00 && word <= 0x1FFF))
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return GREEK_CHARSET;
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if ((word >= 0x0600 && word <= 0x06FF) || (word >= 0xFB50 && word <= 0xFEFC))
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return ARABIC_CHARSET;
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if (word >= 0x0590 && word <= 0x05FF)
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return HEBREW_CHARSET;
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if (word >= 0x0400 && word <= 0x04FF)
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return RUSSIAN_CHARSET;
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if (word >= 0x0100 && word <= 0x024F)
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return EASTEUROPE_CHARSET;
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if (word >= 0x1E00 && word <= 0x1EFF)
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return VIETNAMESE_CHARSET;
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return ANSI_CHARSET;
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}
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CPWL_DocFontMap::CPWL_DocFontMap(CFX_SystemHandler* pSystemHandler,
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CPDF_Document* pAttachedDoc)
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: CPWL_FontMap(pSystemHandler), m_pAttachedDoc(pAttachedDoc) {}
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CPWL_DocFontMap::~CPWL_DocFontMap() {}
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CPDF_Document* CPWL_DocFontMap::GetDocument() {
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return m_pAttachedDoc;
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}
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