blob: 9a2962cd5675cbab62de16864130354b148dedda [file] [log] [blame]
// 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 <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 "fpdfsdk/pdfwindow/PWL_Wnd.h"
#include "third_party/base/ptr_util.h"
#include "third_party/base/stl_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>(nullptr);
m_pPDFDoc->CreateNewDoc();
}
}
return m_pPDFDoc.get();
}
CPDF_Font* CPWL_FontMap::GetPDFFont(int32_t nFontIndex) {
if (nFontIndex >= 0 && nFontIndex < pdfium::CollectionSize<int32_t>(m_Data)) {
if (m_Data[nFontIndex])
return m_Data[nFontIndex]->pFont;
}
return nullptr;
}
CFX_ByteString CPWL_FontMap::GetPDFFontAlias(int32_t nFontIndex) {
if (nFontIndex >= 0 && nFontIndex < pdfium::CollectionSize<int32_t>(m_Data)) {
if (m_Data[nFontIndex])
return m_Data[nFontIndex]->sFontName;
}
return CFX_ByteString();
}
bool CPWL_FontMap::KnowWord(int32_t nFontIndex, uint16_t word) {
if (nFontIndex >= 0 && nFontIndex < pdfium::CollectionSize<int32_t>(m_Data)) {
if (m_Data[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) {
if (nFontIndex < 0 || nFontIndex >= pdfium::CollectionSize<int32_t>(m_Data))
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;
}
CFX_ByteString CPWL_FontMap::GetNativeFontName(int32_t nCharset) {
for (const auto& pData : m_NativeFont) {
if (pData && pData->nCharset == nCharset)
return pData->sFontName;
}
CFX_ByteString sNew = GetNativeFont(nCharset);
if (sNew.IsEmpty())
return CFX_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(kDefaultFontName, FXFONT_ANSI_CHARSET, false);
}
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) {
int32_t i = 0;
for (const auto& pData : m_Data) {
if (pData &&
(nCharset == FXFONT_DEFAULT_CHARSET || nCharset == pData->nCharset) &&
(sFontName.IsEmpty() || pData->sFontName == sFontName)) {
return i;
}
++i;
}
return -1;
}
int32_t CPWL_FontMap::GetFontIndex(const CFX_ByteString& sFontName,
int32_t nCharset,
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) {
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;
}
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 CFX_ByteString();
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 >= pdfium::CollectionSize<int32_t>(m_Data))
return nullptr;
return m_Data[nIndex].get();
}
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;
}