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// Copyright 2016 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/fxge/cfx_fontmapper.h"
#include <algorithm>
#include <memory>
#include <sstream>
#include <tuple>
#include <utility>
#include <vector>
#include "build/build_config.h"
#include "core/fxcrt/fx_codepage.h"
#include "core/fxcrt/fx_extension.h"
#include "core/fxcrt/fx_memory_wrappers.h"
#include "core/fxcrt/stl_util.h"
#include "core/fxge/cfx_fontmgr.h"
#include "core/fxge/cfx_substfont.h"
#include "core/fxge/fx_font.h"
#include "core/fxge/systemfontinfo_iface.h"
#include "third_party/base/check.h"
#include "third_party/base/containers/contains.h"
#include "third_party/base/cxx17_backports.h"
namespace {
constexpr int kNumStandardFonts = 14;
static_assert(CFX_FontMapper::kLast + 1 == kNumStandardFonts,
"StandardFont enum count mismatch");
const char* const kBase14FontNames[kNumStandardFonts] = {
"Courier",
"Courier-Bold",
"Courier-BoldOblique",
"Courier-Oblique",
"Helvetica",
"Helvetica-Bold",
"Helvetica-BoldOblique",
"Helvetica-Oblique",
"Times-Roman",
"Times-Bold",
"Times-BoldItalic",
"Times-Italic",
"Symbol",
"ZapfDingbats",
};
struct AltFontName {
const char* m_pName; // Raw, POD struct.
CFX_FontMapper::StandardFont m_Index;
};
constexpr AltFontName kAltFontNames[] = {
{"Arial", CFX_FontMapper::kHelvetica},
{"Arial,Bold", CFX_FontMapper::kHelveticaBold},
{"Arial,BoldItalic", CFX_FontMapper::kHelveticaBoldOblique},
{"Arial,Italic", CFX_FontMapper::kHelveticaOblique},
{"Arial-Bold", CFX_FontMapper::kHelveticaBold},
{"Arial-BoldItalic", CFX_FontMapper::kHelveticaBoldOblique},
{"Arial-BoldItalicMT", CFX_FontMapper::kHelveticaBoldOblique},
{"Arial-BoldMT", CFX_FontMapper::kHelveticaBold},
{"Arial-Italic", CFX_FontMapper::kHelveticaOblique},
{"Arial-ItalicMT", CFX_FontMapper::kHelveticaOblique},
{"ArialBold", CFX_FontMapper::kHelveticaBold},
{"ArialBoldItalic", CFX_FontMapper::kHelveticaBoldOblique},
{"ArialItalic", CFX_FontMapper::kHelveticaOblique},
{"ArialMT", CFX_FontMapper::kHelvetica},
{"ArialMT,Bold", CFX_FontMapper::kHelveticaBold},
{"ArialMT,BoldItalic", CFX_FontMapper::kHelveticaBoldOblique},
{"ArialMT,Italic", CFX_FontMapper::kHelveticaOblique},
{"ArialRoundedMTBold", CFX_FontMapper::kHelveticaBold},
{"Courier", CFX_FontMapper::kCourier},
{"Courier,Bold", CFX_FontMapper::kCourierBold},
{"Courier,BoldItalic", CFX_FontMapper::kCourierBoldOblique},
{"Courier,Italic", CFX_FontMapper::kCourierOblique},
{"Courier-Bold", CFX_FontMapper::kCourierBold},
{"Courier-BoldOblique", CFX_FontMapper::kCourierBoldOblique},
{"Courier-Oblique", CFX_FontMapper::kCourierOblique},
{"CourierBold", CFX_FontMapper::kCourierBold},
{"CourierBoldItalic", CFX_FontMapper::kCourierBoldOblique},
{"CourierItalic", CFX_FontMapper::kCourierOblique},
{"CourierNew", CFX_FontMapper::kCourier},
{"CourierNew,Bold", CFX_FontMapper::kCourierBold},
{"CourierNew,BoldItalic", CFX_FontMapper::kCourierBoldOblique},
{"CourierNew,Italic", CFX_FontMapper::kCourierOblique},
{"CourierNew-Bold", CFX_FontMapper::kCourierBold},
{"CourierNew-BoldItalic", CFX_FontMapper::kCourierBoldOblique},
{"CourierNew-Italic", CFX_FontMapper::kCourierOblique},
{"CourierNewBold", CFX_FontMapper::kCourierBold},
{"CourierNewBoldItalic", CFX_FontMapper::kCourierBoldOblique},
{"CourierNewItalic", CFX_FontMapper::kCourierOblique},
{"CourierNewPS-BoldItalicMT", CFX_FontMapper::kCourierBoldOblique},
{"CourierNewPS-BoldMT", CFX_FontMapper::kCourierBold},
{"CourierNewPS-ItalicMT", CFX_FontMapper::kCourierOblique},
{"CourierNewPSMT", CFX_FontMapper::kCourier},
{"CourierStd", CFX_FontMapper::kCourier},
{"CourierStd-Bold", CFX_FontMapper::kCourierBold},
{"CourierStd-BoldOblique", CFX_FontMapper::kCourierBoldOblique},
{"CourierStd-Oblique", CFX_FontMapper::kCourierOblique},
{"Helvetica", CFX_FontMapper::kHelvetica},
{"Helvetica,Bold", CFX_FontMapper::kHelveticaBold},
{"Helvetica,BoldItalic", CFX_FontMapper::kHelveticaBoldOblique},
{"Helvetica,Italic", CFX_FontMapper::kHelveticaOblique},
{"Helvetica-Bold", CFX_FontMapper::kHelveticaBold},
{"Helvetica-BoldItalic", CFX_FontMapper::kHelveticaBoldOblique},
{"Helvetica-BoldOblique", CFX_FontMapper::kHelveticaBoldOblique},
{"Helvetica-Italic", CFX_FontMapper::kHelveticaOblique},
{"Helvetica-Oblique", CFX_FontMapper::kHelveticaOblique},
{"HelveticaBold", CFX_FontMapper::kHelveticaBold},
{"HelveticaBoldItalic", CFX_FontMapper::kHelveticaBoldOblique},
{"HelveticaItalic", CFX_FontMapper::kHelveticaOblique},
{"Symbol", CFX_FontMapper::kSymbol},
{"SymbolMT", CFX_FontMapper::kSymbol},
{"Times-Bold", CFX_FontMapper::kTimesBold},
{"Times-BoldItalic", CFX_FontMapper::kTimesBoldOblique},
{"Times-Italic", CFX_FontMapper::kTimesOblique},
{"Times-Roman", CFX_FontMapper::kTimes},
{"TimesBold", CFX_FontMapper::kTimesBold},
{"TimesBoldItalic", CFX_FontMapper::kTimesBoldOblique},
{"TimesItalic", CFX_FontMapper::kTimesOblique},
{"TimesNewRoman", CFX_FontMapper::kTimes},
{"TimesNewRoman,Bold", CFX_FontMapper::kTimesBold},
{"TimesNewRoman,BoldItalic", CFX_FontMapper::kTimesBoldOblique},
{"TimesNewRoman,Italic", CFX_FontMapper::kTimesOblique},
{"TimesNewRoman-Bold", CFX_FontMapper::kTimesBold},
{"TimesNewRoman-BoldItalic", CFX_FontMapper::kTimesBoldOblique},
{"TimesNewRoman-Italic", CFX_FontMapper::kTimesOblique},
{"TimesNewRomanBold", CFX_FontMapper::kTimesBold},
{"TimesNewRomanBoldItalic", CFX_FontMapper::kTimesBoldOblique},
{"TimesNewRomanItalic", CFX_FontMapper::kTimesOblique},
{"TimesNewRomanPS", CFX_FontMapper::kTimes},
{"TimesNewRomanPS-Bold", CFX_FontMapper::kTimesBold},
{"TimesNewRomanPS-BoldItalic", CFX_FontMapper::kTimesBoldOblique},
{"TimesNewRomanPS-BoldItalicMT", CFX_FontMapper::kTimesBoldOblique},
{"TimesNewRomanPS-BoldMT", CFX_FontMapper::kTimesBold},
{"TimesNewRomanPS-Italic", CFX_FontMapper::kTimesOblique},
{"TimesNewRomanPS-ItalicMT", CFX_FontMapper::kTimesOblique},
{"TimesNewRomanPSMT", CFX_FontMapper::kTimes},
{"TimesNewRomanPSMT,Bold", CFX_FontMapper::kTimesBold},
{"TimesNewRomanPSMT,BoldItalic", CFX_FontMapper::kTimesBoldOblique},
{"TimesNewRomanPSMT,Italic", CFX_FontMapper::kTimesOblique},
{"ZapfDingbats", CFX_FontMapper::kDingbats},
};
struct AltFontFamily {
const char* m_pFontName; // Raw, POD struct.
const char* m_pFontFamily; // Raw, POD struct.
};
constexpr AltFontFamily kAltFontFamilies[] = {
{"AGaramondPro", "Adobe Garamond Pro"},
{"BankGothicBT-Medium", "BankGothic Md BT"},
{"ForteMT", "Forte"},
};
#if defined(OS_LINUX) || defined(OS_CHROMEOS) || defined(OS_ASMJS)
const char kNarrowFamily[] = "LiberationSansNarrow";
#elif defined(OS_ANDROID)
const char kNarrowFamily[] = "RobotoCondensed";
#else
const char kNarrowFamily[] = "ArialNarrow";
#endif // defined(OS_LINUX) || defined(OS_CHROMEOS) || defined(OS_ASMJS)
ByteString TT_NormalizeName(const char* family) {
ByteString norm(family);
norm.Remove(' ');
norm.Remove('-');
norm.Remove(',');
auto pos = norm.Find('+');
if (pos.has_value() && pos.value() != 0)
norm = norm.First(pos.value());
norm.MakeLower();
return norm;
}
void GetFontFamily(uint32_t nStyle, ByteString* fontName) {
if (fontName->Contains("Script")) {
if (FontStyleIsForceBold(nStyle))
*fontName = "ScriptMTBold";
else if (fontName->Contains("Palace"))
*fontName = "PalaceScriptMT";
else if (fontName->Contains("French"))
*fontName = "FrenchScriptMT";
else if (fontName->Contains("FreeStyle"))
*fontName = "FreeStyleScript";
return;
}
for (const auto& alternate : kAltFontFamilies) {
if (fontName->Contains(alternate.m_pFontName)) {
*fontName = alternate.m_pFontFamily;
return;
}
}
}
ByteString ParseStyle(const char* pStyle, int iLen, int iIndex) {
std::ostringstream buf;
if (!iLen || iLen <= iIndex)
return ByteString(buf);
while (iIndex < iLen) {
if (pStyle[iIndex] == ',')
break;
buf << pStyle[iIndex];
++iIndex;
}
return ByteString(buf);
}
const struct FX_FontStyle {
const char* name;
size_t len;
uint32_t style;
} g_FontStyles[] = {
{"Bold", 4, FXFONT_FORCE_BOLD},
{"Italic", 6, FXFONT_ITALIC},
{"BoldItalic", 10, FXFONT_FORCE_BOLD | FXFONT_ITALIC},
{"Reg", 3, FXFONT_NORMAL},
{"Regular", 7, FXFONT_NORMAL},
};
// <exists, index, length>
std::tuple<bool, uint32_t, size_t> GetStyleType(const ByteString& bsStyle,
bool bReverse) {
if (bsStyle.IsEmpty())
return std::make_tuple(false, FXFONT_NORMAL, 0);
for (int i = pdfium::size(g_FontStyles) - 1; i >= 0; --i) {
const FX_FontStyle* pStyle = g_FontStyles + i;
if (!pStyle || pStyle->len > bsStyle.GetLength())
continue;
if (bReverse) {
if (bsStyle.Last(pStyle->len) == pStyle->name)
return std::make_tuple(true, pStyle->style, pStyle->len);
} else {
if (bsStyle.First(pStyle->len) == pStyle->name)
return std::make_tuple(true, pStyle->style, pStyle->len);
}
}
return std::make_tuple(false, FXFONT_NORMAL, 0);
}
bool CheckSupportThirdPartFont(const ByteString& name, int* PitchFamily) {
if (name != "MyriadPro")
return false;
*PitchFamily &= ~FXFONT_FF_ROMAN;
return true;
}
void UpdatePitchFamily(uint32_t flags, int* PitchFamily) {
if (FontStyleIsSerif(flags))
*PitchFamily |= FXFONT_FF_ROMAN;
if (FontStyleIsScript(flags))
*PitchFamily |= FXFONT_FF_SCRIPT;
if (FontStyleIsFixedPitch(flags))
*PitchFamily |= FXFONT_FF_FIXEDPITCH;
}
bool IsStrUpper(const ByteString& str) {
for (size_t i = 0; i < str.GetLength(); ++i) {
if (!FXSYS_IsUpperASCII(str[i]))
return false;
}
return true;
}
void RemoveSubsettedFontPrefix(ByteString* subst_name) {
constexpr size_t kPrefixLength = 6;
if (subst_name->GetLength() > kPrefixLength &&
(*subst_name)[kPrefixLength] == '+' &&
IsStrUpper(subst_name->First(kPrefixLength))) {
*subst_name =
subst_name->Last(subst_name->GetLength() - (kPrefixLength + 1));
}
}
} // namespace
CFX_FontMapper::CFX_FontMapper(CFX_FontMgr* mgr) : m_pFontMgr(mgr) {}
CFX_FontMapper::~CFX_FontMapper() = default;
void CFX_FontMapper::SetSystemFontInfo(
std::unique_ptr<SystemFontInfoIface> pFontInfo) {
if (!pFontInfo)
return;
m_pFontInfo = std::move(pFontInfo);
}
uint32_t CFX_FontMapper::GetChecksumFromTT(void* hFont) {
uint32_t buffer[256];
m_pFontInfo->GetFontData(
hFont, kTableTTCF, pdfium::as_writable_bytes(pdfium::make_span(buffer)));
uint32_t checksum = 0;
for (auto x : buffer)
checksum += x;
return checksum;
}
ByteString CFX_FontMapper::GetPSNameFromTT(void* hFont) {
uint32_t size = m_pFontInfo->GetFontData(hFont, kTableNAME, {});
if (!size)
return ByteString();
std::vector<uint8_t, FxAllocAllocator<uint8_t>> buffer(size);
uint32_t bytes_read = m_pFontInfo->GetFontData(hFont, kTableNAME, buffer);
return bytes_read == size ? GetNameFromTT(buffer, 6) : ByteString();
}
void CFX_FontMapper::AddInstalledFont(const ByteString& name, int charset) {
if (!m_pFontInfo)
return;
m_FaceArray.push_back({name, static_cast<uint32_t>(charset)});
if (name == m_LastFamily)
return;
bool bLocalized = std::any_of(name.begin(), name.end(), [](const char& c) {
return static_cast<uint8_t>(c) > 0x80;
});
if (bLocalized) {
void* hFont = m_pFontInfo->GetFont(name.c_str());
if (!hFont) {
hFont = m_pFontInfo->MapFont(0, 0, FX_CHARSET_Default, 0, name.c_str());
if (!hFont)
return;
}
ByteString new_name = GetPSNameFromTT(hFont);
if (!new_name.IsEmpty())
m_LocalizedTTFonts.push_back(std::make_pair(new_name, name));
m_pFontInfo->DeleteFont(hFont);
}
m_InstalledTTFonts.push_back(name);
m_LastFamily = name;
}
void CFX_FontMapper::LoadInstalledFonts() {
if (!m_pFontInfo || m_bListLoaded)
return;
m_pFontInfo->EnumFontList(this);
m_bListLoaded = true;
}
ByteString CFX_FontMapper::MatchInstalledFonts(const ByteString& norm_name) {
LoadInstalledFonts();
int i;
for (i = fxcrt::CollectionSize<int>(m_InstalledTTFonts) - 1; i >= 0; i--) {
ByteString norm1 = TT_NormalizeName(m_InstalledTTFonts[i].c_str());
if (norm1 == norm_name)
return m_InstalledTTFonts[i];
}
for (i = fxcrt::CollectionSize<int>(m_LocalizedTTFonts) - 1; i >= 0; i--) {
ByteString norm1 = TT_NormalizeName(m_LocalizedTTFonts[i].first.c_str());
if (norm1 == norm_name)
return m_LocalizedTTFonts[i].second;
}
return ByteString();
}
RetainPtr<CFX_Face> CFX_FontMapper::UseInternalSubst(CFX_SubstFont* pSubstFont,
int iBaseFont,
int italic_angle,
int weight,
int pitch_family) {
if (iBaseFont < kNumStandardFonts) {
if (m_FoxitFaces[iBaseFont])
return m_FoxitFaces[iBaseFont];
Optional<pdfium::span<const uint8_t>> font_data =
m_pFontMgr->GetBuiltinFont(iBaseFont);
if (font_data.has_value()) {
m_FoxitFaces[iBaseFont] =
m_pFontMgr->NewFixedFace(nullptr, font_data.value(), 0);
return m_FoxitFaces[iBaseFont];
}
}
pSubstFont->m_bFlagMM = true;
pSubstFont->m_ItalicAngle = italic_angle;
if (weight)
pSubstFont->m_Weight = weight;
if (FontFamilyIsRoman(pitch_family)) {
pSubstFont->UseChromeSerif();
if (!m_MMFaces[1]) {
m_MMFaces[1] = m_pFontMgr->NewFixedFace(
nullptr, m_pFontMgr->GetBuiltinFont(14).value(), 0);
}
return m_MMFaces[1];
}
pSubstFont->m_Family = "Chrome Sans";
if (!m_MMFaces[0]) {
m_MMFaces[0] = m_pFontMgr->NewFixedFace(
nullptr, m_pFontMgr->GetBuiltinFont(15).value(), 0);
}
return m_MMFaces[0];
}
RetainPtr<CFX_Face> CFX_FontMapper::FindSubstFont(const ByteString& name,
bool bTrueType,
uint32_t flags,
int weight,
int italic_angle,
int CharsetCP,
CFX_SubstFont* pSubstFont) {
if (weight == 0)
weight = FXFONT_FW_NORMAL;
if (!(flags & FXFONT_USEEXTERNATTR)) {
weight = FXFONT_FW_NORMAL;
italic_angle = 0;
}
ByteString SubstName = name;
SubstName.Remove(' ');
if (bTrueType && name.GetLength() > 0 && name[0] == '@')
SubstName = name.Last(name.GetLength() - 1);
RemoveSubsettedFontPrefix(&SubstName);
GetStandardFontName(&SubstName);
if (SubstName == "Symbol" && !bTrueType) {
pSubstFont->m_Family = "Chrome Symbol";
pSubstFont->m_Charset = FX_CHARSET_Symbol;
return UseInternalSubst(pSubstFont, 12, italic_angle, weight, 0);
}
if (SubstName == "ZapfDingbats") {
pSubstFont->m_Family = "Chrome Dingbats";
pSubstFont->m_Charset = FX_CHARSET_Symbol;
return UseInternalSubst(pSubstFont, 13, italic_angle, weight, 0);
}
int iBaseFont = 0;
ByteString family;
ByteString style;
bool bHasComma = false;
bool bHasHyphen = false;
{
Optional<size_t> pos = SubstName.Find(",");
if (pos.has_value()) {
family = SubstName.First(pos.value());
GetStandardFontName(&family);
style = SubstName.Last(SubstName.GetLength() - (pos.value() + 1));
bHasComma = true;
} else {
family = SubstName;
}
}
for (; iBaseFont < 12; iBaseFont++) {
if (family == kBase14FontNames[iBaseFont])
break;
}
int PitchFamily = 0;
uint32_t nStyle = FXFONT_NORMAL;
bool bStyleAvail = false;
if (iBaseFont < 12) {
if ((iBaseFont % 4) == 1 || (iBaseFont % 4) == 2)
nStyle |= FXFONT_FORCE_BOLD;
if ((iBaseFont % 4) / 2)
nStyle |= FXFONT_ITALIC;
if (iBaseFont < 4)
PitchFamily |= FXFONT_FF_FIXEDPITCH;
if (iBaseFont >= 8)
PitchFamily |= FXFONT_FF_ROMAN;
} else {
iBaseFont = kNumStandardFonts;
if (!bHasComma) {
Optional<size_t> pos = family.ReverseFind('-');
if (pos.has_value()) {
style = family.Last(family.GetLength() - (pos.value() + 1));
family = family.First(pos.value());
bHasHyphen = true;
}
}
if (!bHasHyphen) {
int nLen = family.GetLength();
bool hasStyleType;
uint32_t styleType;
size_t len;
std::tie(hasStyleType, styleType, len) = GetStyleType(family, true);
if (hasStyleType) {
family = family.First(nLen - len);
nStyle |= styleType;
}
}
UpdatePitchFamily(flags, &PitchFamily);
}
const int old_weight = weight;
if (FontStyleIsForceBold(nStyle))
weight = FXFONT_FW_BOLD;
if (!style.IsEmpty()) {
int nLen = style.GetLength();
const char* pStyle = style.c_str();
int i = 0;
bool bFirstItem = true;
ByteString buf;
while (i < nLen) {
buf = ParseStyle(pStyle, nLen, i);
bool hasStyleType;
uint32_t styleType;
size_t len;
std::tie(hasStyleType, styleType, len) = GetStyleType(buf, false);
if ((i && !bStyleAvail) || (!i && !hasStyleType)) {
family = SubstName;
iBaseFont = kNumStandardFonts;
break;
}
if (hasStyleType)
bStyleAvail = true;
if (FontStyleIsForceBold(styleType)) {
// If we're already bold, then we're double bold, use special weight.
if (FontStyleIsForceBold(nStyle)) {
weight = FXFONT_FW_BOLD_BOLD;
} else {
weight = FXFONT_FW_BOLD;
nStyle |= FXFONT_FORCE_BOLD;
}
bFirstItem = false;
}
if (FontStyleIsItalic(styleType) && FontStyleIsForceBold(styleType)) {
nStyle |= FXFONT_ITALIC;
} else if (FontStyleIsItalic(styleType)) {
if (bFirstItem) {
nStyle |= FXFONT_ITALIC;
} else {
family = SubstName;
iBaseFont = kNumStandardFonts;
}
break;
}
i += buf.GetLength() + 1;
}
}
if (!m_pFontInfo) {
return UseInternalSubst(pSubstFont, iBaseFont, italic_angle, old_weight,
PitchFamily);
}
int Charset = FX_CHARSET_ANSI;
if (CharsetCP)
Charset = FX_GetCharsetFromCodePage(CharsetCP);
else if (iBaseFont == kNumStandardFonts && FontStyleIsSymbolic(flags))
Charset = FX_CHARSET_Symbol;
const bool bCJK = FX_CharSetIsCJK(Charset);
bool bItalic = FontStyleIsItalic(nStyle);
GetFontFamily(nStyle, &family);
ByteString match = MatchInstalledFonts(TT_NormalizeName(family.c_str()));
if (match.IsEmpty() && family != SubstName &&
(!bHasComma && (!bHasHyphen || (bHasHyphen && !bStyleAvail)))) {
match = MatchInstalledFonts(TT_NormalizeName(SubstName.c_str()));
}
if (match.IsEmpty() && iBaseFont >= kNumStandardFonts) {
if (!bCJK) {
if (!CheckSupportThirdPartFont(family, &PitchFamily)) {
bItalic = italic_angle != 0;
weight = old_weight;
}
Optional<size_t> pos = SubstName.Find("Narrow");
if (pos.has_value() && pos.value() != 0)
family = kNarrowFamily;
pos = SubstName.Find("Condensed");
if (pos.has_value() && pos.value() != 0)
family = kNarrowFamily;
} else {
pSubstFont->m_bSubstCJK = true;
if (nStyle)
pSubstFont->m_WeightCJK = nStyle ? weight : FXFONT_FW_NORMAL;
if (FontStyleIsItalic(nStyle))
pSubstFont->m_bItalicCJK = true;
}
} else {
italic_angle = 0;
if (nStyle == FXFONT_NORMAL)
weight = FXFONT_FW_NORMAL;
}
if (!match.IsEmpty() || iBaseFont < kNumStandardFonts) {
if (!match.IsEmpty())
family = match;
if (iBaseFont < kNumStandardFonts) {
if (nStyle && !(iBaseFont % 4)) {
if (FontStyleIsForceBold(nStyle) && FontStyleIsItalic(nStyle))
iBaseFont += 2;
else if (FontStyleIsForceBold(nStyle))
iBaseFont += 1;
else if (FontStyleIsItalic(nStyle))
iBaseFont += 3;
}
family = kBase14FontNames[iBaseFont];
}
} else if (FontStyleIsItalic(flags)) {
bItalic = true;
}
void* hFont = m_pFontInfo->MapFont(weight, bItalic, Charset, PitchFamily,
family.c_str());
if (!hFont) {
if (bCJK) {
bItalic = italic_angle != 0;
weight = old_weight;
}
if (!match.IsEmpty()) {
hFont = m_pFontInfo->GetFont(match.c_str());
if (!hFont) {
return UseInternalSubst(pSubstFont, iBaseFont, italic_angle, old_weight,
PitchFamily);
}
} else {
if (Charset == FX_CHARSET_Symbol) {
#if defined(OS_APPLE) || defined(OS_ANDROID)
if (SubstName == "Symbol") {
pSubstFont->m_Family = "Chrome Symbol";
pSubstFont->m_Charset = FX_CHARSET_Symbol;
return UseInternalSubst(pSubstFont, 12, italic_angle, old_weight,
PitchFamily);
}
#endif
return FindSubstFont(family, bTrueType, flags & ~FXFONT_SYMBOLIC,
weight, italic_angle, 0, pSubstFont);
}
if (Charset == FX_CHARSET_ANSI) {
return UseInternalSubst(pSubstFont, iBaseFont, italic_angle, old_weight,
PitchFamily);
}
auto it =
std::find_if(m_FaceArray.begin(), m_FaceArray.end(),
[Charset](const FaceData& face) {
return face.charset == static_cast<uint32_t>(Charset);
});
if (it == m_FaceArray.end()) {
return UseInternalSubst(pSubstFont, iBaseFont, italic_angle, old_weight,
PitchFamily);
}
hFont = m_pFontInfo->GetFont(it->name.c_str());
}
}
if (!hFont)
return nullptr;
m_pFontInfo->GetFaceName(hFont, &SubstName);
if (Charset == FX_CHARSET_Default)
m_pFontInfo->GetFontCharset(hFont, &Charset);
uint32_t ttc_size = m_pFontInfo->GetFontData(hFont, kTableTTCF, {});
uint32_t font_size = m_pFontInfo->GetFontData(hFont, 0, {});
if (font_size == 0 && ttc_size == 0) {
m_pFontInfo->DeleteFont(hFont);
return nullptr;
}
RetainPtr<CFX_Face> face;
if (ttc_size)
face = GetCachedTTCFace(hFont, ttc_size, font_size);
else
face = GetCachedFace(hFont, SubstName, weight, bItalic, font_size);
if (!face) {
m_pFontInfo->DeleteFont(hFont);
return nullptr;
}
pSubstFont->m_Family = SubstName;
pSubstFont->m_Charset = Charset;
bool bNeedUpdateWeight = false;
if (FXFT_Is_Face_Bold(face->GetRec()))
bNeedUpdateWeight = weight != FXFONT_FW_BOLD;
else
bNeedUpdateWeight = weight != FXFONT_FW_NORMAL;
if (bNeedUpdateWeight)
pSubstFont->m_Weight = weight;
if (bItalic && !FXFT_Is_Face_Italic(face->GetRec())) {
if (italic_angle == 0)
italic_angle = -12;
else if (abs(italic_angle) < 5)
italic_angle = 0;
pSubstFont->m_ItalicAngle = italic_angle;
}
m_pFontInfo->DeleteFont(hFont);
return face;
}
int CFX_FontMapper::GetFaceSize() const {
return fxcrt::CollectionSize<int>(m_FaceArray);
}
bool CFX_FontMapper::HasInstalledFont(ByteStringView name) const {
for (const auto& font : m_InstalledTTFonts) {
if (font == name)
return true;
}
return false;
}
bool CFX_FontMapper::HasLocalizedFont(ByteStringView name) const {
for (const auto& fontPair : m_LocalizedTTFonts) {
if (fontPair.first == name)
return true;
}
return false;
}
#if defined(OS_WIN)
Optional<ByteString> CFX_FontMapper::InstalledFontNameStartingWith(
const ByteString& name) const {
for (const auto& thisname : m_InstalledTTFonts) {
if (thisname.First(name.GetLength()) == name)
return thisname;
}
return pdfium::nullopt;
}
Optional<ByteString> CFX_FontMapper::LocalizedFontNameStartingWith(
const ByteString& name) const {
for (const auto& thispair : m_LocalizedTTFonts) {
if (thispair.first.First(name.GetLength()) == name)
return thispair.second;
}
return pdfium::nullopt;
}
#endif // defined(OS_WIN)
#ifdef PDF_ENABLE_XFA
std::unique_ptr<uint8_t, FxFreeDeleter> CFX_FontMapper::RawBytesForIndex(
uint32_t index,
size_t* returned_length) {
if (!m_pFontInfo)
return nullptr;
void* hFont = m_pFontInfo->MapFont(0, 0, FX_CHARSET_Default, 0,
GetFaceName(index).c_str());
if (!hFont)
return nullptr;
uint32_t required_size = m_pFontInfo->GetFontData(hFont, 0, {});
if (required_size == 0)
return nullptr;
std::unique_ptr<uint8_t, FxFreeDeleter> pBuffer(
FX_Alloc(uint8_t, required_size + 1));
*returned_length =
m_pFontInfo->GetFontData(hFont, 0, {pBuffer.get(), required_size});
return pBuffer;
}
#endif // PDF_ENABLE_XFA
bool CFX_FontMapper::IsBuiltinFace(const RetainPtr<CFX_Face>& face) const {
for (size_t i = 0; i < MM_FACE_COUNT; ++i) {
if (m_MMFaces[i] == face)
return true;
}
for (size_t i = 0; i < FOXIT_FACE_COUNT; ++i) {
if (m_FoxitFaces[i] == face)
return true;
}
return false;
}
RetainPtr<CFX_Face> CFX_FontMapper::GetCachedTTCFace(void* hFont,
uint32_t ttc_size,
uint32_t font_size) {
uint32_t checksum = GetChecksumFromTT(hFont);
RetainPtr<CFX_FontMgr::FontDesc> pFontDesc =
m_pFontMgr->GetCachedTTCFontDesc(ttc_size, checksum);
if (!pFontDesc) {
std::unique_ptr<uint8_t, FxFreeDeleter> pFontData(
FX_Alloc(uint8_t, ttc_size));
m_pFontInfo->GetFontData(hFont, kTableTTCF, {pFontData.get(), ttc_size});
pFontDesc = m_pFontMgr->AddCachedTTCFontDesc(
ttc_size, checksum, std::move(pFontData), ttc_size);
}
DCHECK(ttc_size >= font_size);
uint32_t font_offset = ttc_size - font_size;
int face_index =
GetTTCIndex(pFontDesc->FontData().first(ttc_size), font_offset);
RetainPtr<CFX_Face> pFace(pFontDesc->GetFace(face_index));
if (pFace)
return pFace;
pFace = m_pFontMgr->NewFixedFace(
pFontDesc, pFontDesc->FontData().first(ttc_size), face_index);
if (!pFace)
return nullptr;
pFontDesc->SetFace(face_index, pFace.Get());
return pFace;
}
RetainPtr<CFX_Face> CFX_FontMapper::GetCachedFace(void* hFont,
ByteString SubstName,
int weight,
bool bItalic,
uint32_t font_size) {
RetainPtr<CFX_FontMgr::FontDesc> pFontDesc =
m_pFontMgr->GetCachedFontDesc(SubstName, weight, bItalic);
if (!pFontDesc) {
std::unique_ptr<uint8_t, FxFreeDeleter> pFontData(
FX_Alloc(uint8_t, font_size));
m_pFontInfo->GetFontData(hFont, 0, {pFontData.get(), font_size});
pFontDesc = m_pFontMgr->AddCachedFontDesc(SubstName, weight, bItalic,
std::move(pFontData), font_size);
}
RetainPtr<CFX_Face> pFace(pFontDesc->GetFace(0));
if (pFace)
return pFace;
pFace = m_pFontMgr->NewFixedFace(pFontDesc,
pFontDesc->FontData().first(font_size), 0);
if (!pFace)
return nullptr;
pFontDesc->SetFace(0, pFace.Get());
return pFace;
}
// static
Optional<CFX_FontMapper::StandardFont> CFX_FontMapper::GetStandardFontName(
ByteString* name) {
const auto* end = std::end(kAltFontNames);
const auto* found =
std::lower_bound(std::begin(kAltFontNames), end, name->c_str(),
[](const AltFontName& element, const char* name) {
return FXSYS_stricmp(element.m_pName, name) < 0;
});
if (found == end || FXSYS_stricmp(found->m_pName, name->c_str()))
return pdfium::nullopt;
*name = kBase14FontNames[static_cast<size_t>(found->m_Index)];
return found->m_Index;
}
// static
bool CFX_FontMapper::IsStandardFontName(const ByteString& name) {
return pdfium::Contains(kBase14FontNames, name);
}
// static
bool CFX_FontMapper::IsSymbolicFont(StandardFont font) {
return font == StandardFont::kSymbol || font == StandardFont::kDingbats;
}
// static
bool CFX_FontMapper::IsFixedFont(StandardFont font) {
return font == StandardFont::kCourier || font == StandardFont::kCourierBold ||
font == StandardFont::kCourierBoldOblique ||
font == StandardFont::kCourierOblique;
}