| // Copyright 2016 The PDFium Authors |
| // 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 <stdint.h> |
| |
| #include <algorithm> |
| #include <memory> |
| #include <utility> |
| |
| #include "build/build_config.h" |
| #include "core/fxcrt/data_vector.h" |
| #include "core/fxcrt/fx_codepage.h" |
| #include "core/fxcrt/fx_extension.h" |
| #include "core/fxcrt/fx_memory.h" |
| #include "core/fxcrt/fx_memory_wrappers.h" |
| #include "core/fxcrt/stl_util.h" |
| #include "core/fxcrt/unowned_ptr_exclusion.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_op.h" |
| #include "third_party/base/containers/contains.h" |
| #include "third_party/base/cxx17_backports.h" |
| |
| namespace { |
| |
| static_assert(CFX_FontMapper::kLast + 1 == CFX_FontMapper::kNumStandardFonts, |
| "StandardFont enum count mismatch"); |
| |
| const char* const kBase14FontNames[CFX_FontMapper::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 BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS) || defined(OS_ASMJS) |
| const char kNarrowFamily[] = "LiberationSansNarrow"; |
| #elif BUILDFLAG(IS_ANDROID) |
| const char kNarrowFamily[] = "RobotoCondensed"; |
| #else |
| const char kNarrowFamily[] = "ArialNarrow"; |
| #endif // BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS) || defined(OS_ASMJS) |
| |
| ByteString TT_NormalizeName(ByteString norm) { |
| 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 ByteString& bsStyle, size_t iStart) { |
| ByteStringView bsRegion = bsStyle.AsStringView().Substr(iStart); |
| size_t iIndex = bsRegion.Find(',').value_or(bsRegion.GetLength()); |
| return ByteString(bsRegion.First(iIndex)); |
| } |
| |
| struct FX_FontStyle { |
| const char* name; |
| size_t len; |
| uint32_t style; |
| }; |
| |
| constexpr FX_FontStyle kFontStyles[] = { |
| {"Regular", 7, FXFONT_NORMAL}, |
| {"Reg", 3, FXFONT_NORMAL}, |
| {"BoldItalic", 10, FXFONT_FORCE_BOLD | FXFONT_ITALIC}, |
| {"Italic", 6, FXFONT_ITALIC}, |
| {"Bold", 4, FXFONT_FORCE_BOLD}, |
| }; |
| |
| const FX_FontStyle* GetStyleType(ByteStringView font_name, |
| bool reverse_search) { |
| if (font_name.IsEmpty()) |
| return nullptr; |
| |
| for (const FX_FontStyle& style : kFontStyles) { |
| if (style.len > font_name.GetLength()) |
| continue; |
| |
| ByteStringView style_view = |
| reverse_search ? font_name.Last(style.len) : font_name.First(style.len); |
| if (style_view == style.name) |
| return &style; |
| } |
| return nullptr; |
| } |
| |
| bool ParseStyles(const ByteString& style_str, |
| bool* is_style_available, |
| int* weight, |
| uint32_t* style) { |
| if (style_str.IsEmpty()) |
| return false; |
| |
| size_t i = 0; |
| bool is_first_item = true; |
| while (i < style_str.GetLength()) { |
| ByteString buf = ParseStyle(style_str, i); |
| const FX_FontStyle* style_result = |
| GetStyleType(buf.AsStringView(), /*reverse_search=*/false); |
| if ((i && !*is_style_available) || (!i && !style_result)) |
| return true; |
| |
| uint32_t parsed_style; |
| if (style_result) { |
| *is_style_available = true; |
| parsed_style = style_result->style; |
| } else { |
| parsed_style = FXFONT_NORMAL; |
| } |
| |
| if (FontStyleIsForceBold(parsed_style)) { |
| // If we're already bold, then we're double bold, use special weight. |
| if (FontStyleIsForceBold(*style)) { |
| *weight = FXFONT_FW_BOLD_BOLD; |
| } else { |
| *weight = FXFONT_FW_BOLD; |
| *style |= FXFONT_FORCE_BOLD; |
| } |
| |
| is_first_item = false; |
| } |
| if (FontStyleIsItalic(parsed_style) && FontStyleIsForceBold(parsed_style)) { |
| *style |= FXFONT_ITALIC; |
| } else if (FontStyleIsItalic(parsed_style)) { |
| if (!is_first_item) |
| return true; |
| |
| *style |= FXFONT_ITALIC; |
| break; |
| } |
| i += buf.GetLength() + 1; |
| } |
| return false; |
| } |
| |
| bool CheckSupportThirdPartFont(const ByteString& name, int* pitch_family) { |
| if (name != "MyriadPro") |
| return false; |
| *pitch_family &= ~FXFONT_FF_ROMAN; |
| return true; |
| } |
| |
| uint32_t GetStyleFromBaseFont(int base_font) { |
| int pos = base_font % 4; |
| uint32_t style = FXFONT_NORMAL; |
| if (pos == 1 || pos == 2) |
| style |= FXFONT_FORCE_BOLD; |
| if (pos / 2) |
| style |= FXFONT_ITALIC; |
| return style; |
| } |
| |
| int GetPitchFamilyFromBaseFont(int base_font) { |
| if (base_font < 4) |
| return FXFONT_FF_FIXEDPITCH; |
| if (base_font >= 8) |
| return FXFONT_FF_ROMAN; |
| return 0; |
| } |
| |
| int GetPitchFamilyFromFlags(uint32_t flags) { |
| int pitch_family = 0; |
| if (FontStyleIsSerif(flags)) |
| pitch_family |= FXFONT_FF_ROMAN; |
| if (FontStyleIsScript(flags)) |
| pitch_family |= FXFONT_FF_SCRIPT; |
| if (FontStyleIsFixedPitch(flags)) |
| pitch_family |= FXFONT_FF_FIXEDPITCH; |
| return pitch_family; |
| } |
| |
| int AdjustBaseFontForStyle(int base_font, uint32_t style) { |
| if (!style || (base_font % 4)) |
| return base_font; |
| |
| if (FontStyleIsForceBold(style) && FontStyleIsItalic(style)) |
| base_font += 2; |
| else if (FontStyleIsForceBold(style)) |
| base_font += 1; |
| else if (FontStyleIsItalic(style)) |
| base_font += 3; |
| return base_font; |
| } |
| |
| FX_Charset GetCharset(FX_CodePage code_page, int base_font, uint32_t flags) { |
| if (code_page != FX_CodePage::kDefANSI) |
| return FX_GetCharsetFromCodePage(code_page); |
| if (FontStyleIsSymbolic(flags) && |
| base_font == CFX_FontMapper::kNumStandardFonts) { |
| return FX_Charset::kSymbol; |
| } |
| return FX_Charset::kANSI; |
| } |
| |
| 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)); |
| } |
| } |
| |
| ByteString GetSubstName(const ByteString& name, bool is_truetype) { |
| ByteString subst_name = name; |
| if (is_truetype && name.Front() == '@') |
| subst_name.Delete(0); |
| else |
| subst_name.Remove(' '); |
| RemoveSubsettedFontPrefix(&subst_name); |
| CFX_FontMapper::GetStandardFontName(&subst_name); |
| return subst_name; |
| } |
| |
| bool IsNarrowFontName(const ByteString& name) { |
| static const char kNarrowFonts[][10] = {"Narrow", "Condensed"}; |
| for (const char* font : kNarrowFonts) { |
| absl::optional<size_t> pos = name.Find(font); |
| if (pos.has_value() && pos.value() != 0) |
| return true; |
| } |
| return false; |
| } |
| |
| class ScopedFontDeleter { |
| public: |
| FX_STACK_ALLOCATED(); |
| |
| ScopedFontDeleter(SystemFontInfoIface* font_info, void* font) |
| : font_info_(font_info), font_(font) {} |
| ~ScopedFontDeleter() { font_info_->DeleteFont(font_); } |
| |
| private: |
| UnownedPtr<SystemFontInfoIface> const font_info_; |
| UNOWNED_PTR_EXCLUSION void* const font_; // void type incompatible. |
| }; |
| |
| } // 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_bListLoaded = false; |
| m_pFontInfo = std::move(pFontInfo); |
| } |
| |
| std::unique_ptr<SystemFontInfoIface> CFX_FontMapper::TakeSystemFontInfo() { |
| return std::move(m_pFontInfo); |
| } |
| |
| uint32_t CFX_FontMapper::GetChecksumFromTT(void* font_handle) { |
| uint32_t buffer[256]; |
| m_pFontInfo->GetFontData( |
| font_handle, 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* font_handle) { |
| size_t size = m_pFontInfo->GetFontData(font_handle, kTableNAME, {}); |
| if (!size) |
| return ByteString(); |
| |
| DataVector<uint8_t> buffer(size); |
| size_t bytes_read = m_pFontInfo->GetFontData(font_handle, kTableNAME, buffer); |
| return bytes_read == size ? GetNameFromTT(buffer, 6) : ByteString(); |
| } |
| |
| void CFX_FontMapper::AddInstalledFont(const ByteString& name, |
| FX_Charset charset) { |
| if (!m_pFontInfo) |
| return; |
| |
| m_FaceArray.push_back({name, static_cast<uint32_t>(charset)}); |
| if (name == m_LastFamily) |
| return; |
| |
| bool is_localized = std::any_of(name.begin(), name.end(), [](const char& c) { |
| return static_cast<uint8_t>(c) > 0x80; |
| }); |
| |
| if (is_localized) { |
| void* font_handle = m_pFontInfo->GetFont(name); |
| if (!font_handle) { |
| font_handle = |
| m_pFontInfo->MapFont(0, false, FX_Charset::kDefault, 0, name); |
| if (!font_handle) |
| return; |
| } |
| |
| ScopedFontDeleter scoped_font(m_pFontInfo.get(), font_handle); |
| ByteString new_name = GetPSNameFromTT(font_handle); |
| if (!new_name.IsEmpty()) |
| m_LocalizedTTFonts.push_back(std::make_pair(new_name, name)); |
| } |
| 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--) { |
| if (TT_NormalizeName(m_InstalledTTFonts[i]) == norm_name) |
| return m_InstalledTTFonts[i]; |
| } |
| for (i = fxcrt::CollectionSize<int>(m_LocalizedTTFonts) - 1; i >= 0; i--) { |
| if (TT_NormalizeName(m_LocalizedTTFonts[i].first) == norm_name) |
| return m_LocalizedTTFonts[i].second; |
| } |
| return ByteString(); |
| } |
| |
| RetainPtr<CFX_Face> CFX_FontMapper::UseInternalSubst( |
| int base_font, |
| int weight, |
| int italic_angle, |
| int pitch_family, |
| CFX_SubstFont* subst_font) { |
| if (base_font < kNumStandardFonts) { |
| if (!m_StandardFaces[base_font]) { |
| m_StandardFaces[base_font] = m_pFontMgr->NewFixedFace( |
| nullptr, m_pFontMgr->GetStandardFont(base_font), 0); |
| } |
| return m_StandardFaces[base_font]; |
| } |
| |
| subst_font->SetIsBuiltInGenericFont(); |
| subst_font->m_ItalicAngle = italic_angle; |
| if (weight) |
| subst_font->m_Weight = weight; |
| if (FontFamilyIsRoman(pitch_family)) { |
| subst_font->UseChromeSerif(); |
| if (!m_GenericSerifFace) { |
| m_GenericSerifFace = m_pFontMgr->NewFixedFace( |
| nullptr, m_pFontMgr->GetGenericSerifFont(), 0); |
| } |
| return m_GenericSerifFace; |
| } |
| subst_font->m_Family = "Chrome Sans"; |
| if (!m_GenericSansFace) { |
| m_GenericSansFace = |
| m_pFontMgr->NewFixedFace(nullptr, m_pFontMgr->GetGenericSansFont(), 0); |
| } |
| return m_GenericSansFace; |
| } |
| |
| RetainPtr<CFX_Face> CFX_FontMapper::UseExternalSubst( |
| void* font_handle, |
| ByteString face_name, |
| int weight, |
| bool is_italic, |
| int italic_angle, |
| FX_Charset charset, |
| CFX_SubstFont* subst_font) { |
| DCHECK(font_handle); |
| |
| ScopedFontDeleter scoped_font(m_pFontInfo.get(), font_handle); |
| m_pFontInfo->GetFaceName(font_handle, &face_name); |
| if (charset == FX_Charset::kDefault) |
| m_pFontInfo->GetFontCharset(font_handle, &charset); |
| size_t ttc_size = m_pFontInfo->GetFontData(font_handle, kTableTTCF, {}); |
| size_t font_size = m_pFontInfo->GetFontData(font_handle, 0, {}); |
| if (font_size == 0 && ttc_size == 0) |
| return nullptr; |
| |
| RetainPtr<CFX_Face> face = |
| ttc_size |
| ? GetCachedTTCFace(font_handle, ttc_size, font_size) |
| : GetCachedFace(font_handle, face_name, weight, is_italic, font_size); |
| if (!face) |
| return nullptr; |
| |
| subst_font->m_Family = face_name; |
| subst_font->m_Charset = charset; |
| int face_weight = |
| FXFT_Is_Face_Bold(face->GetRec()) ? FXFONT_FW_BOLD : FXFONT_FW_NORMAL; |
| if (weight != face_weight) |
| subst_font->m_Weight = weight; |
| if (is_italic && !FXFT_Is_Face_Italic(face->GetRec())) { |
| if (italic_angle == 0) |
| italic_angle = -12; |
| else if (abs(italic_angle) < 5) |
| italic_angle = 0; |
| subst_font->m_ItalicAngle = italic_angle; |
| } |
| return face; |
| } |
| |
| RetainPtr<CFX_Face> CFX_FontMapper::FindSubstFont(const ByteString& name, |
| bool is_truetype, |
| uint32_t flags, |
| int weight, |
| int italic_angle, |
| FX_CodePage code_page, |
| CFX_SubstFont* subst_font) { |
| if (weight == 0) |
| weight = FXFONT_FW_NORMAL; |
| |
| if (!(flags & FXFONT_USEEXTERNATTR)) { |
| weight = FXFONT_FW_NORMAL; |
| italic_angle = 0; |
| } |
| const ByteString subst_name = GetSubstName(name, is_truetype); |
| if (subst_name == "Symbol" && !is_truetype) { |
| subst_font->m_Family = "Chrome Symbol"; |
| subst_font->m_Charset = FX_Charset::kSymbol; |
| return UseInternalSubst(kSymbol, weight, italic_angle, 0, subst_font); |
| } |
| if (subst_name == "ZapfDingbats") { |
| subst_font->m_Family = "Chrome Dingbats"; |
| subst_font->m_Charset = FX_Charset::kSymbol; |
| return UseInternalSubst(kDingbats, weight, italic_angle, 0, subst_font); |
| } |
| int base_font = 0; |
| ByteString family; |
| ByteString style; |
| bool has_comma = false; |
| bool has_hyphen = false; |
| { |
| absl::optional<size_t> pos = subst_name.Find(","); |
| if (pos.has_value()) { |
| family = subst_name.First(pos.value()); |
| GetStandardFontName(&family); |
| style = subst_name.Last(subst_name.GetLength() - (pos.value() + 1)); |
| has_comma = true; |
| } else { |
| family = subst_name; |
| } |
| } |
| for (; base_font < kSymbol; base_font++) { |
| if (family == kBase14FontNames[base_font]) |
| break; |
| } |
| int pitch_family; |
| uint32_t nStyle; |
| bool is_style_available = false; |
| if (base_font < kSymbol) { |
| nStyle = GetStyleFromBaseFont(base_font); |
| pitch_family = GetPitchFamilyFromBaseFont(base_font); |
| } else { |
| base_font = kNumStandardFonts; |
| nStyle = FXFONT_NORMAL; |
| if (!has_comma) { |
| absl::optional<size_t> pos = family.ReverseFind('-'); |
| if (pos.has_value()) { |
| style = family.Last(family.GetLength() - (pos.value() + 1)); |
| family = family.First(pos.value()); |
| has_hyphen = true; |
| } |
| } |
| if (!has_hyphen) { |
| size_t nLen = family.GetLength(); |
| const FX_FontStyle* style_result = |
| GetStyleType(family.AsStringView(), /*reverse_search=*/true); |
| if (style_result) { |
| family = family.First(nLen - style_result->len); |
| nStyle |= style_result->style; |
| } |
| } |
| pitch_family = GetPitchFamilyFromFlags(flags); |
| } |
| |
| const int old_weight = weight; |
| if (FontStyleIsForceBold(nStyle)) |
| weight = FXFONT_FW_BOLD; |
| |
| if (ParseStyles(style, &is_style_available, &weight, &nStyle)) { |
| family = subst_name; |
| base_font = kNumStandardFonts; |
| } |
| |
| if (!m_pFontInfo) { |
| return UseInternalSubst(base_font, old_weight, italic_angle, pitch_family, |
| subst_font); |
| } |
| |
| const FX_Charset Charset = GetCharset(code_page, base_font, flags); |
| const bool is_cjk = FX_CharSetIsCJK(Charset); |
| bool is_italic = FontStyleIsItalic(nStyle); |
| |
| GetFontFamily(nStyle, &family); |
| ByteString match = MatchInstalledFonts(TT_NormalizeName(family)); |
| if (match.IsEmpty() && family != subst_name && |
| (!has_comma && (!has_hyphen || (has_hyphen && !is_style_available)))) { |
| match = MatchInstalledFonts(TT_NormalizeName(subst_name)); |
| } |
| if (match.IsEmpty() && base_font >= kNumStandardFonts) { |
| if (!is_cjk) { |
| if (!CheckSupportThirdPartFont(family, &pitch_family)) { |
| is_italic = italic_angle != 0; |
| weight = old_weight; |
| } |
| if (IsNarrowFontName(subst_name)) |
| family = kNarrowFamily; |
| } else { |
| subst_font->m_bSubstCJK = true; |
| if (nStyle) |
| subst_font->m_WeightCJK = nStyle ? weight : FXFONT_FW_NORMAL; |
| if (FontStyleIsItalic(nStyle)) |
| subst_font->m_bItalicCJK = true; |
| } |
| } else { |
| italic_angle = 0; |
| if (nStyle == FXFONT_NORMAL) |
| weight = FXFONT_FW_NORMAL; |
| } |
| |
| if (!match.IsEmpty() || base_font < kNumStandardFonts) { |
| if (!match.IsEmpty()) |
| family = match; |
| if (base_font < kNumStandardFonts) { |
| base_font = AdjustBaseFontForStyle(base_font, nStyle); |
| family = kBase14FontNames[base_font]; |
| } |
| } else if (FontStyleIsItalic(flags)) { |
| is_italic = true; |
| } |
| void* font_handle = |
| m_pFontInfo->MapFont(weight, is_italic, Charset, pitch_family, family); |
| if (font_handle) { |
| return UseExternalSubst(font_handle, subst_name, weight, is_italic, |
| italic_angle, Charset, subst_font); |
| } |
| |
| if (is_cjk) { |
| is_italic = italic_angle != 0; |
| weight = old_weight; |
| } |
| if (!match.IsEmpty()) { |
| font_handle = m_pFontInfo->GetFont(match); |
| if (!font_handle) { |
| return UseInternalSubst(base_font, old_weight, italic_angle, pitch_family, |
| subst_font); |
| } |
| return UseExternalSubst(font_handle, subst_name, weight, is_italic, |
| italic_angle, Charset, subst_font); |
| } |
| |
| if (Charset == FX_Charset::kSymbol) { |
| #if !BUILDFLAG(IS_WIN) |
| if (subst_name == "Symbol") { |
| subst_font->m_Family = "Chrome Symbol"; |
| subst_font->m_Charset = FX_Charset::kSymbol; |
| return UseInternalSubst(kSymbol, old_weight, italic_angle, pitch_family, |
| subst_font); |
| } |
| #endif |
| return FindSubstFont(family, is_truetype, flags & ~FXFONT_SYMBOLIC, weight, |
| italic_angle, FX_CodePage::kDefANSI, subst_font); |
| } |
| |
| if (Charset == FX_Charset::kANSI) { |
| return UseInternalSubst(base_font, old_weight, italic_angle, pitch_family, |
| subst_font); |
| } |
| |
| 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(base_font, old_weight, italic_angle, pitch_family, |
| subst_font); |
| } |
| font_handle = m_pFontInfo->GetFont(it->name); |
| if (!font_handle) |
| return nullptr; |
| return UseExternalSubst(font_handle, subst_name, weight, is_italic, |
| italic_angle, Charset, subst_font); |
| } |
| |
| size_t CFX_FontMapper::GetFaceSize() const { |
| return m_FaceArray.size(); |
| } |
| |
| ByteString CFX_FontMapper::GetFaceName(size_t index) const { |
| CHECK_LT(index, m_FaceArray.size()); |
| return m_FaceArray[index].name; |
| } |
| |
| 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 BUILDFLAG(IS_WIN) |
| absl::optional<ByteString> CFX_FontMapper::InstalledFontNameStartingWith( |
| const ByteString& name) const { |
| for (const auto& thisname : m_InstalledTTFonts) { |
| if (thisname.First(name.GetLength()) == name) |
| return thisname; |
| } |
| return absl::nullopt; |
| } |
| |
| absl::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 absl::nullopt; |
| } |
| #endif // BUILDFLAG(IS_WIN) |
| |
| #ifdef PDF_ENABLE_XFA |
| FixedUninitDataVector<uint8_t> CFX_FontMapper::RawBytesForIndex(size_t index) { |
| CHECK_LT(index, m_FaceArray.size()); |
| |
| void* font_handle = m_pFontInfo->MapFont(0, false, FX_Charset::kDefault, 0, |
| GetFaceName(index)); |
| if (!font_handle) |
| return FixedUninitDataVector<uint8_t>(); |
| |
| ScopedFontDeleter scoped_font(m_pFontInfo.get(), font_handle); |
| size_t required_size = m_pFontInfo->GetFontData(font_handle, 0, {}); |
| if (required_size == 0) |
| return FixedUninitDataVector<uint8_t>(); |
| |
| FixedUninitDataVector<uint8_t> result(required_size); |
| size_t actual_size = |
| m_pFontInfo->GetFontData(font_handle, 0, result.writable_span()); |
| if (actual_size != required_size) |
| return FixedUninitDataVector<uint8_t>(); |
| |
| return result; |
| } |
| #endif // PDF_ENABLE_XFA |
| |
| RetainPtr<CFX_Face> CFX_FontMapper::GetCachedTTCFace(void* font_handle, |
| size_t ttc_size, |
| size_t data_size) { |
| CHECK_GE(ttc_size, data_size); |
| uint32_t checksum = GetChecksumFromTT(font_handle); |
| RetainPtr<CFX_FontMgr::FontDesc> pFontDesc = |
| m_pFontMgr->GetCachedTTCFontDesc(ttc_size, checksum); |
| if (!pFontDesc) { |
| FixedUninitDataVector<uint8_t> font_data(ttc_size); |
| size_t size = m_pFontInfo->GetFontData(font_handle, kTableTTCF, |
| font_data.writable_span()); |
| if (size != ttc_size) |
| return nullptr; |
| |
| pFontDesc = m_pFontMgr->AddCachedTTCFontDesc(ttc_size, checksum, |
| std::move(font_data)); |
| } |
| size_t font_offset = ttc_size - data_size; |
| size_t 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* font_handle, |
| ByteString subst_name, |
| int weight, |
| bool is_italic, |
| size_t data_size) { |
| RetainPtr<CFX_FontMgr::FontDesc> pFontDesc = |
| m_pFontMgr->GetCachedFontDesc(subst_name, weight, is_italic); |
| if (!pFontDesc) { |
| FixedUninitDataVector<uint8_t> font_data(data_size); |
| size_t size = |
| m_pFontInfo->GetFontData(font_handle, 0, font_data.writable_span()); |
| if (size != data_size) |
| return nullptr; |
| |
| pFontDesc = m_pFontMgr->AddCachedFontDesc(subst_name, weight, is_italic, |
| std::move(font_data)); |
| } |
| RetainPtr<CFX_Face> pFace(pFontDesc->GetFace(0)); |
| if (pFace) |
| return pFace; |
| |
| pFace = m_pFontMgr->NewFixedFace(pFontDesc, |
| pFontDesc->FontData().first(data_size), 0); |
| if (!pFace) |
| return nullptr; |
| |
| pFontDesc->SetFace(0, pFace.Get()); |
| return pFace; |
| } |
| |
| // static |
| absl::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 absl::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; |
| } |