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// 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 "core/fpdfapi/page/cpdf_docpagedata.h"
#include <algorithm>
#include <memory>
#include <set>
#include <utility>
#include <vector>
#include "build/build_config.h"
#include "core/fpdfapi/font/cpdf_type1font.h"
#include "core/fpdfapi/page/cpdf_form.h"
#include "core/fpdfapi/page/cpdf_iccprofile.h"
#include "core/fpdfapi/page/cpdf_image.h"
#include "core/fpdfapi/page/cpdf_pagemodule.h"
#include "core/fpdfapi/page/cpdf_pattern.h"
#include "core/fpdfapi/page/cpdf_shadingpattern.h"
#include "core/fpdfapi/page/cpdf_tilingpattern.h"
#include "core/fpdfapi/parser/cpdf_array.h"
#include "core/fpdfapi/parser/cpdf_dictionary.h"
#include "core/fpdfapi/parser/cpdf_name.h"
#include "core/fpdfapi/parser/cpdf_number.h"
#include "core/fpdfapi/parser/cpdf_reference.h"
#include "core/fpdfapi/parser/cpdf_stream.h"
#include "core/fpdfapi/parser/cpdf_stream_acc.h"
#include "core/fpdfapi/parser/cpdf_string.h"
#include "core/fxcrt/fx_codepage.h"
#include "core/fxcrt/fx_memory.h"
#include "core/fxcrt/fx_safe_types.h"
#include "core/fxcrt/scoped_set_insertion.h"
#include "core/fxge/cfx_font.h"
#include "core/fxge/cfx_fontmapper.h"
#include "core/fxge/cfx_substfont.h"
#include "core/fxge/cfx_unicodeencoding.h"
#include "core/fxge/fx_font.h"
#include "third_party/base/check.h"
#include "third_party/base/stl_util.h"
namespace {
void InsertWidthArrayImpl(std::vector<int> widths, CPDF_Array* pWidthArray) {
size_t i;
for (i = 1; i < widths.size(); i++) {
if (widths[i] != widths[0])
break;
}
if (i == widths.size()) {
int first = pWidthArray->GetIntegerAt(pWidthArray->size() - 1);
pWidthArray->AppendNew<CPDF_Number>(first +
static_cast<int>(widths.size()) - 1);
pWidthArray->AppendNew<CPDF_Number>(widths[0]);
return;
}
CPDF_Array* pWidthArray1 = pWidthArray->AppendNew<CPDF_Array>();
for (int w : widths)
pWidthArray1->AppendNew<CPDF_Number>(w);
}
#if defined(OS_WIN)
void InsertWidthArray(HDC hDC, int start, int end, CPDF_Array* pWidthArray) {
std::vector<int> widths(end - start + 1);
GetCharWidth(hDC, start, end, widths.data());
InsertWidthArrayImpl(std::move(widths), pWidthArray);
}
ByteString GetPSNameFromTT(HDC hDC) {
ByteString result;
DWORD size = ::GetFontData(hDC, 'eman', 0, nullptr, 0);
if (size != GDI_ERROR) {
LPBYTE buffer = FX_Alloc(BYTE, size);
::GetFontData(hDC, 'eman', 0, buffer, size);
result = GetNameFromTT({buffer, size}, 6);
FX_Free(buffer);
}
return result;
}
#endif // defined(OS_WIN)
void InsertWidthArray1(CFX_Font* pFont,
CFX_UnicodeEncoding* pEncoding,
wchar_t start,
wchar_t end,
CPDF_Array* pWidthArray) {
std::vector<int> widths(end - start + 1);
for (size_t i = 0; i < widths.size(); ++i) {
int glyph_index = pEncoding->GlyphFromCharCode(start + i);
widths[i] = pFont->GetGlyphWidth(glyph_index);
}
InsertWidthArrayImpl(std::move(widths), pWidthArray);
}
int CalculateFlags(bool bold,
bool italic,
bool fixedPitch,
bool serif,
bool script,
bool symbolic) {
int flags = 0;
if (bold)
flags |= FXFONT_FORCE_BOLD;
if (italic)
flags |= FXFONT_ITALIC;
if (fixedPitch)
flags |= FXFONT_FIXED_PITCH;
if (serif)
flags |= FXFONT_SERIF;
if (script)
flags |= FXFONT_SCRIPT;
if (symbolic)
flags |= FXFONT_SYMBOLIC;
else
flags |= FXFONT_NONSYMBOLIC;
return flags;
}
void ProcessNonbCJK(CPDF_Dictionary* pBaseDict,
bool bold,
bool italic,
ByteString basefont,
RetainPtr<CPDF_Array> pWidths) {
if (bold && italic)
basefont += ",BoldItalic";
else if (bold)
basefont += ",Bold";
else if (italic)
basefont += ",Italic";
pBaseDict->SetNewFor<CPDF_Name>("Subtype", "TrueType");
pBaseDict->SetNewFor<CPDF_Name>("BaseFont", basefont);
pBaseDict->SetNewFor<CPDF_Number>("FirstChar", 32);
pBaseDict->SetNewFor<CPDF_Number>("LastChar", 255);
pBaseDict->SetFor("Widths", pWidths);
}
RetainPtr<CPDF_Dictionary> CalculateFontDesc(CPDF_Document* pDoc,
ByteString basefont,
int flags,
int italicangle,
int ascend,
int descend,
RetainPtr<CPDF_Array> bbox,
int32_t stemV) {
auto pFontDesc = pDoc->New<CPDF_Dictionary>();
pFontDesc->SetNewFor<CPDF_Name>("Type", "FontDescriptor");
pFontDesc->SetNewFor<CPDF_Name>("FontName", basefont);
pFontDesc->SetNewFor<CPDF_Number>("Flags", flags);
pFontDesc->SetFor("FontBBox", bbox);
pFontDesc->SetNewFor<CPDF_Number>("ItalicAngle", italicangle);
pFontDesc->SetNewFor<CPDF_Number>("Ascent", ascend);
pFontDesc->SetNewFor<CPDF_Number>("Descent", descend);
pFontDesc->SetNewFor<CPDF_Number>("StemV", stemV);
return pFontDesc;
}
} // namespace
// static
CPDF_DocPageData* CPDF_DocPageData::FromDocument(const CPDF_Document* pDoc) {
return static_cast<CPDF_DocPageData*>(pDoc->GetPageData());
}
CPDF_DocPageData::CPDF_DocPageData() = default;
CPDF_DocPageData::~CPDF_DocPageData() {
for (auto& it : m_FontMap) {
if (it.second)
it.second->WillBeDestroyed();
}
}
void CPDF_DocPageData::ClearStockFont() {
CPDF_PageModule::GetInstance()->ClearStockFont(GetDocument());
}
RetainPtr<CPDF_Font> CPDF_DocPageData::GetFont(CPDF_Dictionary* pFontDict) {
if (!pFontDict)
return nullptr;
auto it = m_FontMap.find(pFontDict);
if (it != m_FontMap.end() && it->second)
return pdfium::WrapRetain(it->second.Get());
RetainPtr<CPDF_Font> pFont =
CPDF_Font::Create(GetDocument(), pFontDict, this);
if (!pFont)
return nullptr;
m_FontMap[pFontDict].Reset(pFont.Get());
return pFont;
}
RetainPtr<CPDF_Font> CPDF_DocPageData::GetStandardFont(
const ByteString& fontName,
const CPDF_FontEncoding* pEncoding) {
if (fontName.IsEmpty())
return nullptr;
for (auto& it : m_FontMap) {
CPDF_Font* pFont = it.second.Get();
if (!pFont)
continue;
if (pFont->GetBaseFontName() != fontName)
continue;
if (pFont->IsEmbedded())
continue;
if (!pFont->IsType1Font())
continue;
if (pFont->GetFontDict()->KeyExist("Widths"))
continue;
CPDF_Type1Font* pT1Font = pFont->AsType1Font();
if (pEncoding && !pT1Font->GetEncoding()->IsIdentical(pEncoding))
continue;
return pdfium::WrapRetain(pFont);
}
CPDF_Dictionary* pDict = GetDocument()->NewIndirect<CPDF_Dictionary>();
pDict->SetNewFor<CPDF_Name>("Type", "Font");
pDict->SetNewFor<CPDF_Name>("Subtype", "Type1");
pDict->SetNewFor<CPDF_Name>("BaseFont", fontName);
if (pEncoding) {
pDict->SetFor("Encoding",
pEncoding->Realize(GetDocument()->GetByteStringPool()));
}
// Note: NULL FormFactoryIface OK since known Type1 font from above.
RetainPtr<CPDF_Font> pFont = CPDF_Font::Create(GetDocument(), pDict, nullptr);
if (!pFont)
return nullptr;
m_FontMap[pDict].Reset(pFont.Get());
return pFont;
}
RetainPtr<CPDF_ColorSpace> CPDF_DocPageData::GetColorSpace(
const CPDF_Object* pCSObj,
const CPDF_Dictionary* pResources) {
std::set<const CPDF_Object*> visited;
return GetColorSpaceGuarded(pCSObj, pResources, &visited);
}
RetainPtr<CPDF_ColorSpace> CPDF_DocPageData::GetColorSpaceGuarded(
const CPDF_Object* pCSObj,
const CPDF_Dictionary* pResources,
std::set<const CPDF_Object*>* pVisited) {
std::set<const CPDF_Object*> visitedLocal;
return GetColorSpaceInternal(pCSObj, pResources, pVisited, &visitedLocal);
}
RetainPtr<CPDF_ColorSpace> CPDF_DocPageData::GetColorSpaceInternal(
const CPDF_Object* pCSObj,
const CPDF_Dictionary* pResources,
std::set<const CPDF_Object*>* pVisited,
std::set<const CPDF_Object*>* pVisitedInternal) {
if (!pCSObj)
return nullptr;
if (pdfium::Contains(*pVisitedInternal, pCSObj))
return nullptr;
ScopedSetInsertion<const CPDF_Object*> insertion(pVisitedInternal, pCSObj);
if (pCSObj->IsName()) {
ByteString name = pCSObj->GetString();
RetainPtr<CPDF_ColorSpace> pCS = CPDF_ColorSpace::ColorspaceFromName(name);
if (!pCS && pResources) {
const CPDF_Dictionary* pList = pResources->GetDictFor("ColorSpace");
if (pList) {
return GetColorSpaceInternal(pList->GetDirectObjectFor(name), nullptr,
pVisited, pVisitedInternal);
}
}
if (!pCS || !pResources)
return pCS;
const CPDF_Dictionary* pColorSpaces = pResources->GetDictFor("ColorSpace");
if (!pColorSpaces)
return pCS;
const CPDF_Object* pDefaultCS = nullptr;
switch (pCS->GetFamily()) {
case CPDF_ColorSpace::Family::kDeviceRGB:
pDefaultCS = pColorSpaces->GetDirectObjectFor("DefaultRGB");
break;
case CPDF_ColorSpace::Family::kDeviceGray:
pDefaultCS = pColorSpaces->GetDirectObjectFor("DefaultGray");
break;
case CPDF_ColorSpace::Family::kDeviceCMYK:
pDefaultCS = pColorSpaces->GetDirectObjectFor("DefaultCMYK");
break;
default:
break;
}
if (!pDefaultCS)
return pCS;
return GetColorSpaceInternal(pDefaultCS, nullptr, pVisited,
pVisitedInternal);
}
const CPDF_Array* pArray = pCSObj->AsArray();
if (!pArray || pArray->IsEmpty())
return nullptr;
if (pArray->size() == 1) {
return GetColorSpaceInternal(pArray->GetDirectObjectAt(0), pResources,
pVisited, pVisitedInternal);
}
auto it = m_ColorSpaceMap.find(pCSObj);
if (it != m_ColorSpaceMap.end() && it->second)
return pdfium::WrapRetain(it->second.Get());
RetainPtr<CPDF_ColorSpace> pCS =
CPDF_ColorSpace::Load(GetDocument(), pArray, pVisited);
if (!pCS)
return nullptr;
m_ColorSpaceMap[pCSObj].Reset(pCS.Get());
return pCS;
}
RetainPtr<CPDF_Pattern> CPDF_DocPageData::GetPattern(CPDF_Object* pPatternObj,
const CFX_Matrix& matrix) {
if (!pPatternObj)
return nullptr;
auto it = m_PatternMap.find(pPatternObj);
if (it != m_PatternMap.end() && it->second)
return pdfium::WrapRetain(it->second.Get());
CPDF_Dictionary* pDict = pPatternObj->GetDict();
if (!pDict)
return nullptr;
RetainPtr<CPDF_Pattern> pPattern;
int type = pDict->GetIntegerFor("PatternType");
if (type == CPDF_Pattern::kTiling) {
pPattern = pdfium::MakeRetain<CPDF_TilingPattern>(GetDocument(),
pPatternObj, matrix);
} else if (type == CPDF_Pattern::kShading) {
pPattern = pdfium::MakeRetain<CPDF_ShadingPattern>(
GetDocument(), pPatternObj, false, matrix);
} else {
return nullptr;
}
m_PatternMap[pPatternObj].Reset(pPattern.Get());
return pPattern;
}
RetainPtr<CPDF_ShadingPattern> CPDF_DocPageData::GetShading(
CPDF_Object* pPatternObj,
const CFX_Matrix& matrix) {
if (!pPatternObj)
return nullptr;
auto it = m_PatternMap.find(pPatternObj);
if (it != m_PatternMap.end() && it->second)
return pdfium::WrapRetain(it->second->AsShadingPattern());
auto pPattern = pdfium::MakeRetain<CPDF_ShadingPattern>(
GetDocument(), pPatternObj, true, matrix);
m_PatternMap[pPatternObj].Reset(pPattern.Get());
return pPattern;
}
RetainPtr<CPDF_Image> CPDF_DocPageData::GetImage(uint32_t dwStreamObjNum) {
DCHECK(dwStreamObjNum);
auto it = m_ImageMap.find(dwStreamObjNum);
if (it != m_ImageMap.end())
return it->second;
auto pImage = pdfium::MakeRetain<CPDF_Image>(GetDocument(), dwStreamObjNum);
m_ImageMap[dwStreamObjNum] = pImage;
return pImage;
}
void CPDF_DocPageData::MaybePurgeImage(uint32_t dwStreamObjNum) {
DCHECK(dwStreamObjNum);
auto it = m_ImageMap.find(dwStreamObjNum);
if (it != m_ImageMap.end() && it->second->HasOneRef())
m_ImageMap.erase(it);
}
RetainPtr<CPDF_IccProfile> CPDF_DocPageData::GetIccProfile(
const CPDF_Stream* pProfileStream) {
if (!pProfileStream)
return nullptr;
auto it = m_IccProfileMap.find(pProfileStream);
if (it != m_IccProfileMap.end() && it->second)
return pdfium::WrapRetain(it->second.Get());
auto pAccessor = pdfium::MakeRetain<CPDF_StreamAcc>(pProfileStream);
pAccessor->LoadAllDataFiltered();
ByteString bsDigest = pAccessor->ComputeDigest();
auto hash_it = m_HashProfileMap.find(bsDigest);
if (hash_it != m_HashProfileMap.end()) {
auto it_copied_stream = m_IccProfileMap.find(hash_it->second.Get());
if (it_copied_stream != m_IccProfileMap.end() && it_copied_stream->second)
return pdfium::WrapRetain(it_copied_stream->second.Get());
}
auto pProfile =
pdfium::MakeRetain<CPDF_IccProfile>(pProfileStream, pAccessor->GetSpan());
m_IccProfileMap[pProfileStream].Reset(pProfile.Get());
m_HashProfileMap[bsDigest].Reset(pProfileStream);
return pProfile;
}
RetainPtr<CPDF_StreamAcc> CPDF_DocPageData::GetFontFileStreamAcc(
const CPDF_Stream* pFontStream) {
DCHECK(pFontStream);
auto it = m_FontFileMap.find(pFontStream);
if (it != m_FontFileMap.end())
return it->second;
const CPDF_Dictionary* pFontDict = pFontStream->GetDict();
int32_t len1 = pFontDict->GetIntegerFor("Length1");
int32_t len2 = pFontDict->GetIntegerFor("Length2");
int32_t len3 = pFontDict->GetIntegerFor("Length3");
uint32_t org_size = 0;
if (len1 >= 0 && len2 >= 0 && len3 >= 0) {
FX_SAFE_UINT32 safe_org_size = len1;
safe_org_size += len2;
safe_org_size += len3;
org_size = safe_org_size.ValueOrDefault(0);
}
auto pFontAcc = pdfium::MakeRetain<CPDF_StreamAcc>(pFontStream);
pFontAcc->LoadAllDataFilteredWithEstimatedSize(org_size);
m_FontFileMap[pFontStream] = pFontAcc;
return pFontAcc;
}
void CPDF_DocPageData::MaybePurgeFontFileStreamAcc(
const CPDF_Stream* pFontStream) {
if (!pFontStream)
return;
auto it = m_FontFileMap.find(pFontStream);
if (it != m_FontFileMap.end() && it->second->HasOneRef())
m_FontFileMap.erase(it);
}
std::unique_ptr<CPDF_Font::FormIface> CPDF_DocPageData::CreateForm(
CPDF_Document* pDocument,
CPDF_Dictionary* pPageResources,
CPDF_Stream* pFormStream) {
return std::make_unique<CPDF_Form>(pDocument, pPageResources, pFormStream);
}
RetainPtr<CPDF_Font> CPDF_DocPageData::AddStandardFont(
const ByteString& fontName,
const CPDF_FontEncoding* pEncoding) {
ByteString mutable_name(fontName);
Optional<CFX_FontMapper::StandardFont> font_id =
CFX_FontMapper::GetStandardFontName(&mutable_name);
if (!font_id.has_value())
return nullptr;
return GetStandardFont(mutable_name, pEncoding);
}
RetainPtr<CPDF_Font> CPDF_DocPageData::AddFont(std::unique_ptr<CFX_Font> pFont,
int charset) {
if (!pFont)
return nullptr;
const bool bCJK = FX_CharSetIsCJK(charset);
ByteString basefont = pFont->GetFamilyName();
basefont.Replace(" ", "");
int flags =
CalculateFlags(pFont->IsBold(), pFont->IsItalic(), pFont->IsFixedWidth(),
false, false, charset == FX_CHARSET_Symbol);
CPDF_Dictionary* pBaseDict = GetDocument()->NewIndirect<CPDF_Dictionary>();
pBaseDict->SetNewFor<CPDF_Name>("Type", "Font");
auto pEncoding = std::make_unique<CFX_UnicodeEncoding>(pFont.get());
CPDF_Dictionary* pFontDict = pBaseDict;
if (!bCJK) {
auto pWidths = pdfium::MakeRetain<CPDF_Array>();
for (int charcode = 32; charcode < 128; charcode++) {
int glyph_index = pEncoding->GlyphFromCharCode(charcode);
int char_width = pFont->GetGlyphWidth(glyph_index);
pWidths->AppendNew<CPDF_Number>(char_width);
}
if (charset == FX_CHARSET_ANSI || charset == FX_CHARSET_Default ||
charset == FX_CHARSET_Symbol) {
pBaseDict->SetNewFor<CPDF_Name>("Encoding", "WinAnsiEncoding");
for (int charcode = 128; charcode <= 255; charcode++) {
int glyph_index = pEncoding->GlyphFromCharCode(charcode);
int char_width = pFont->GetGlyphWidth(glyph_index);
pWidths->AppendNew<CPDF_Number>(char_width);
}
} else {
size_t i = CalculateEncodingDict(charset, pBaseDict);
if (i < pdfium::size(g_FX_CharsetUnicodes)) {
const uint16_t* pUnicodes = g_FX_CharsetUnicodes[i].m_pUnicodes;
for (int j = 0; j < 128; j++) {
int glyph_index = pEncoding->GlyphFromCharCode(pUnicodes[j]);
int char_width = pFont->GetGlyphWidth(glyph_index);
pWidths->AppendNew<CPDF_Number>(char_width);
}
}
}
ProcessNonbCJK(pBaseDict, pFont->IsBold(), pFont->IsItalic(), basefont,
std::move(pWidths));
} else {
pFontDict = ProcessbCJK(
pBaseDict, charset, basefont,
[&pFont, &pEncoding](wchar_t start, wchar_t end, CPDF_Array* widthArr) {
InsertWidthArray1(pFont.get(), pEncoding.get(), start, end, widthArr);
});
}
int italicangle = pFont->GetSubstFontItalicAngle();
FX_RECT bbox = pFont->GetBBox().value_or(FX_RECT());
auto pBBox = pdfium::MakeRetain<CPDF_Array>();
pBBox->AppendNew<CPDF_Number>(bbox.left);
pBBox->AppendNew<CPDF_Number>(bbox.bottom);
pBBox->AppendNew<CPDF_Number>(bbox.right);
pBBox->AppendNew<CPDF_Number>(bbox.top);
int32_t nStemV = 0;
if (pFont->GetSubstFont()) {
nStemV = pFont->GetSubstFont()->m_Weight / 5;
} else {
static const char stem_chars[] = {'i', 'I', '!', '1'};
const size_t count = pdfium::size(stem_chars);
uint32_t glyph = pEncoding->GlyphFromCharCode(stem_chars[0]);
nStemV = pFont->GetGlyphWidth(glyph);
for (size_t i = 1; i < count; i++) {
glyph = pEncoding->GlyphFromCharCode(stem_chars[i]);
int width = pFont->GetGlyphWidth(glyph);
if (width > 0 && width < nStemV)
nStemV = width;
}
}
CPDF_Dictionary* pFontDesc =
ToDictionary(GetDocument()->AddIndirectObject(CalculateFontDesc(
GetDocument(), basefont, flags, italicangle, pFont->GetAscent(),
pFont->GetDescent(), std::move(pBBox), nStemV)));
pFontDict->SetNewFor<CPDF_Reference>("FontDescriptor", GetDocument(),
pFontDesc->GetObjNum());
return GetFont(pBaseDict);
}
#if defined(OS_WIN)
RetainPtr<CPDF_Font> CPDF_DocPageData::AddWindowsFont(LOGFONTA* pLogFont) {
pLogFont->lfHeight = -1000;
pLogFont->lfWidth = 0;
HGDIOBJ hFont = CreateFontIndirectA(pLogFont);
HDC hDC = CreateCompatibleDC(nullptr);
hFont = SelectObject(hDC, hFont);
int tm_size = GetOutlineTextMetrics(hDC, 0, nullptr);
if (tm_size == 0) {
hFont = SelectObject(hDC, hFont);
DeleteObject(hFont);
DeleteDC(hDC);
return nullptr;
}
LPBYTE tm_buf = FX_Alloc(BYTE, tm_size);
OUTLINETEXTMETRIC* ptm = reinterpret_cast<OUTLINETEXTMETRIC*>(tm_buf);
GetOutlineTextMetrics(hDC, tm_size, ptm);
int flags = CalculateFlags(false, pLogFont->lfItalic != 0,
(pLogFont->lfPitchAndFamily & 3) == FIXED_PITCH,
(pLogFont->lfPitchAndFamily & 0xf8) == FF_ROMAN,
(pLogFont->lfPitchAndFamily & 0xf8) == FF_SCRIPT,
pLogFont->lfCharSet == FX_CHARSET_Symbol);
const bool bCJK = FX_CharSetIsCJK(pLogFont->lfCharSet);
ByteString basefont;
if (bCJK)
basefont = GetPSNameFromTT(hDC);
if (basefont.IsEmpty())
basefont = pLogFont->lfFaceName;
int italicangle = ptm->otmItalicAngle / 10;
int ascend = ptm->otmrcFontBox.top;
int descend = ptm->otmrcFontBox.bottom;
int capheight = ptm->otmsCapEmHeight;
int bbox[4] = {ptm->otmrcFontBox.left, ptm->otmrcFontBox.bottom,
ptm->otmrcFontBox.right, ptm->otmrcFontBox.top};
FX_Free(tm_buf);
basefont.Replace(" ", "");
CPDF_Dictionary* pBaseDict = GetDocument()->NewIndirect<CPDF_Dictionary>();
pBaseDict->SetNewFor<CPDF_Name>("Type", "Font");
CPDF_Dictionary* pFontDict = pBaseDict;
if (!bCJK) {
if (pLogFont->lfCharSet == FX_CHARSET_ANSI ||
pLogFont->lfCharSet == FX_CHARSET_Default ||
pLogFont->lfCharSet == FX_CHARSET_Symbol) {
pBaseDict->SetNewFor<CPDF_Name>("Encoding", "WinAnsiEncoding");
} else {
CalculateEncodingDict(pLogFont->lfCharSet, pBaseDict);
}
int char_widths[224];
GetCharWidth(hDC, 32, 255, char_widths);
auto pWidths = pdfium::MakeRetain<CPDF_Array>();
for (size_t i = 0; i < 224; i++)
pWidths->AppendNew<CPDF_Number>(char_widths[i]);
ProcessNonbCJK(pBaseDict, pLogFont->lfWeight > FW_MEDIUM,
pLogFont->lfItalic != 0, basefont, std::move(pWidths));
} else {
pFontDict =
ProcessbCJK(pBaseDict, pLogFont->lfCharSet, basefont,
[&hDC](wchar_t start, wchar_t end, CPDF_Array* widthArr) {
InsertWidthArray(hDC, start, end, widthArr);
});
}
auto pBBox = pdfium::MakeRetain<CPDF_Array>();
for (int i = 0; i < 4; i++)
pBBox->AppendNew<CPDF_Number>(bbox[i]);
RetainPtr<CPDF_Dictionary> pFontDesc =
CalculateFontDesc(GetDocument(), basefont, flags, italicangle, ascend,
descend, std::move(pBBox), pLogFont->lfWeight / 5);
pFontDesc->SetNewFor<CPDF_Number>("CapHeight", capheight);
pFontDict->SetFor("FontDescriptor",
GetDocument()
->AddIndirectObject(std::move(pFontDesc))
->MakeReference(GetDocument()));
hFont = SelectObject(hDC, hFont);
DeleteObject(hFont);
DeleteDC(hDC);
return GetFont(pBaseDict);
}
#endif // defined(OS_WIN)
size_t CPDF_DocPageData::CalculateEncodingDict(int charset,
CPDF_Dictionary* pBaseDict) {
size_t i;
for (i = 0; i < pdfium::size(g_FX_CharsetUnicodes); ++i) {
if (g_FX_CharsetUnicodes[i].m_Charset == charset)
break;
}
if (i == pdfium::size(g_FX_CharsetUnicodes))
return i;
CPDF_Dictionary* pEncodingDict =
GetDocument()->NewIndirect<CPDF_Dictionary>();
pEncodingDict->SetNewFor<CPDF_Name>("BaseEncoding", "WinAnsiEncoding");
CPDF_Array* pArray = pEncodingDict->SetNewFor<CPDF_Array>("Differences");
pArray->AppendNew<CPDF_Number>(128);
const uint16_t* pUnicodes = g_FX_CharsetUnicodes[i].m_pUnicodes;
for (int j = 0; j < 128; j++) {
ByteString name = PDF_AdobeNameFromUnicode(pUnicodes[j]);
pArray->AppendNew<CPDF_Name>(name.IsEmpty() ? ".notdef" : name);
}
pBaseDict->SetNewFor<CPDF_Reference>("Encoding", GetDocument(),
pEncodingDict->GetObjNum());
return i;
}
CPDF_Dictionary* CPDF_DocPageData::ProcessbCJK(
CPDF_Dictionary* pBaseDict,
int charset,
ByteString basefont,
std::function<void(wchar_t, wchar_t, CPDF_Array*)> Insert) {
CPDF_Dictionary* pFontDict = GetDocument()->NewIndirect<CPDF_Dictionary>();
ByteString cmap;
ByteString ordering;
int supplement = 0;
CPDF_Array* pWidthArray = pFontDict->SetNewFor<CPDF_Array>("W");
switch (charset) {
case FX_CHARSET_ChineseTraditional:
cmap = "ETenms-B5-H";
ordering = "CNS1";
supplement = 4;
pWidthArray->AppendNew<CPDF_Number>(1);
Insert(0x20, 0x7e, pWidthArray);
break;
case FX_CHARSET_ChineseSimplified:
cmap = "GBK-EUC-H";
ordering = "GB1";
supplement = 2;
pWidthArray->AppendNew<CPDF_Number>(7716);
Insert(0x20, 0x20, pWidthArray);
pWidthArray->AppendNew<CPDF_Number>(814);
Insert(0x21, 0x7e, pWidthArray);
break;
case FX_CHARSET_Hangul:
cmap = "KSCms-UHC-H";
ordering = "Korea1";
supplement = 2;
pWidthArray->AppendNew<CPDF_Number>(1);
Insert(0x20, 0x7e, pWidthArray);
break;
case FX_CHARSET_ShiftJIS:
cmap = "90ms-RKSJ-H";
ordering = "Japan1";
supplement = 5;
pWidthArray->AppendNew<CPDF_Number>(231);
Insert(0x20, 0x7d, pWidthArray);
pWidthArray->AppendNew<CPDF_Number>(326);
Insert(0xa0, 0xa0, pWidthArray);
pWidthArray->AppendNew<CPDF_Number>(327);
Insert(0xa1, 0xdf, pWidthArray);
pWidthArray->AppendNew<CPDF_Number>(631);
Insert(0x7e, 0x7e, pWidthArray);
break;
}
pBaseDict->SetNewFor<CPDF_Name>("Subtype", "Type0");
pBaseDict->SetNewFor<CPDF_Name>("BaseFont", basefont);
pBaseDict->SetNewFor<CPDF_Name>("Encoding", cmap);
pFontDict->SetNewFor<CPDF_Name>("Type", "Font");
pFontDict->SetNewFor<CPDF_Name>("Subtype", "CIDFontType2");
pFontDict->SetNewFor<CPDF_Name>("BaseFont", basefont);
CPDF_Dictionary* pCIDSysInfo =
pFontDict->SetNewFor<CPDF_Dictionary>("CIDSystemInfo");
pCIDSysInfo->SetNewFor<CPDF_String>("Registry", "Adobe", false);
pCIDSysInfo->SetNewFor<CPDF_String>("Ordering", ordering, false);
pCIDSysInfo->SetNewFor<CPDF_Number>("Supplement", supplement);
CPDF_Array* pArray = pBaseDict->SetNewFor<CPDF_Array>("DescendantFonts");
pArray->AppendNew<CPDF_Reference>(GetDocument(), pFontDict->GetObjNum());
return pFontDict;
}