| // Copyright 2014 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 "public/fpdf_sysfontinfo.h" |
| |
| #include <stddef.h> |
| |
| #include <memory> |
| |
| #include "core/fxcrt/fx_codepage.h" |
| #include "core/fxcrt/stl_util.h" |
| #include "core/fxcrt/unowned_ptr.h" |
| #include "core/fxge/cfx_font.h" |
| #include "core/fxge/cfx_fontmapper.h" |
| #include "core/fxge/cfx_fontmgr.h" |
| #include "core/fxge/cfx_gemodule.h" |
| #include "core/fxge/fx_font.h" |
| #include "core/fxge/systemfontinfo_iface.h" |
| #include "third_party/base/numerics/safe_conversions.h" |
| |
| #ifdef PDF_ENABLE_XFA |
| #include "xfa/fgas/font/cfgas_fontmgr.h" |
| #include "xfa/fgas/font/cfgas_gemodule.h" |
| #endif |
| |
| static_assert(FXFONT_ANSI_CHARSET == static_cast<int>(FX_Charset::kANSI), |
| "Charset must match"); |
| static_assert(FXFONT_DEFAULT_CHARSET == static_cast<int>(FX_Charset::kDefault), |
| "Charset must match"); |
| static_assert(FXFONT_SYMBOL_CHARSET == static_cast<int>(FX_Charset::kSymbol), |
| "Charset must match"); |
| static_assert(FXFONT_SHIFTJIS_CHARSET == |
| static_cast<int>(FX_Charset::kShiftJIS), |
| "Charset must match"); |
| static_assert(FXFONT_HANGEUL_CHARSET == static_cast<int>(FX_Charset::kHangul), |
| "Charset must match"); |
| static_assert(FXFONT_GB2312_CHARSET == |
| static_cast<int>(FX_Charset::kChineseSimplified), |
| "Charset must match"); |
| static_assert(FXFONT_CHINESEBIG5_CHARSET == |
| static_cast<int>(FX_Charset::kChineseTraditional), |
| "Charset must match"); |
| static_assert(FXFONT_GREEK_CHARSET == |
| static_cast<int>(FX_Charset::kMSWin_Greek), |
| "Charset must match"); |
| static_assert(FXFONT_VIETNAMESE_CHARSET == |
| static_cast<int>(FX_Charset::kMSWin_Vietnamese), |
| "Charset must match"); |
| static_assert(FXFONT_HEBREW_CHARSET == |
| static_cast<int>(FX_Charset::kMSWin_Hebrew), |
| "Charset must match"); |
| static_assert(FXFONT_ARABIC_CHARSET == |
| static_cast<int>(FX_Charset::kMSWin_Arabic), |
| "Charset must match"); |
| static_assert(FXFONT_CYRILLIC_CHARSET == |
| static_cast<int>(FX_Charset::kMSWin_Cyrillic), |
| "Charset must match"); |
| static_assert(FXFONT_THAI_CHARSET == static_cast<int>(FX_Charset::kThai), |
| "Charset must match"); |
| static_assert(FXFONT_EASTERNEUROPEAN_CHARSET == |
| static_cast<int>(FX_Charset::kMSWin_EasternEuropean), |
| "Charset must match"); |
| static_assert(offsetof(CFX_Font::CharsetFontMap, charset) == |
| offsetof(FPDF_CharsetFontMap, charset), |
| "CFX_Font::CharsetFontMap must be same as FPDF_CharsetFontMap"); |
| static_assert(offsetof(CFX_Font::CharsetFontMap, fontname) == |
| offsetof(FPDF_CharsetFontMap, fontname), |
| "CFX_Font::CharsetFontMap must be same as FPDF_CharsetFontMap"); |
| static_assert(sizeof(CFX_Font::CharsetFontMap) == sizeof(FPDF_CharsetFontMap), |
| "CFX_Font::CharsetFontMap must be same as FPDF_CharsetFontMap"); |
| |
| class CFX_ExternalFontInfo final : public SystemFontInfoIface { |
| public: |
| explicit CFX_ExternalFontInfo(FPDF_SYSFONTINFO* pInfo) : m_pInfo(pInfo) {} |
| ~CFX_ExternalFontInfo() override { |
| if (m_pInfo->Release) |
| m_pInfo->Release(m_pInfo); |
| } |
| |
| bool EnumFontList(CFX_FontMapper* pMapper) override { |
| if (m_pInfo->EnumFonts) { |
| m_pInfo->EnumFonts(m_pInfo, pMapper); |
| return true; |
| } |
| return false; |
| } |
| |
| void* MapFont(int weight, |
| bool bItalic, |
| FX_Charset charset, |
| int pitch_family, |
| const ByteString& face) override { |
| if (!m_pInfo->MapFont) |
| return nullptr; |
| |
| int iExact; |
| return m_pInfo->MapFont(m_pInfo, weight, bItalic, static_cast<int>(charset), |
| pitch_family, face.c_str(), &iExact); |
| } |
| |
| void* GetFont(const ByteString& family) override { |
| if (!m_pInfo->GetFont) |
| return nullptr; |
| return m_pInfo->GetFont(m_pInfo, family.c_str()); |
| } |
| |
| size_t GetFontData(void* hFont, |
| uint32_t table, |
| pdfium::span<uint8_t> buffer) override { |
| if (!m_pInfo->GetFontData) |
| return 0; |
| return m_pInfo->GetFontData(m_pInfo, hFont, table, buffer.data(), |
| fxcrt::CollectionSize<unsigned long>(buffer)); |
| } |
| |
| bool GetFaceName(void* hFont, ByteString* name) override { |
| if (!m_pInfo->GetFaceName) |
| return false; |
| unsigned long size = m_pInfo->GetFaceName(m_pInfo, hFont, nullptr, 0); |
| if (size == 0) |
| return false; |
| char* buffer = FX_Alloc(char, size); |
| size = m_pInfo->GetFaceName(m_pInfo, hFont, buffer, size); |
| *name = ByteString(buffer, size); |
| FX_Free(buffer); |
| return true; |
| } |
| |
| bool GetFontCharset(void* hFont, FX_Charset* charset) override { |
| if (!m_pInfo->GetFontCharset) |
| return false; |
| |
| *charset = FX_GetCharsetFromInt(m_pInfo->GetFontCharset(m_pInfo, hFont)); |
| return true; |
| } |
| |
| void DeleteFont(void* hFont) override { |
| if (m_pInfo->DeleteFont) |
| m_pInfo->DeleteFont(m_pInfo, hFont); |
| } |
| |
| private: |
| UnownedPtr<FPDF_SYSFONTINFO> const m_pInfo; |
| }; |
| |
| FPDF_EXPORT void FPDF_CALLCONV FPDF_AddInstalledFont(void* mapper, |
| const char* face, |
| int charset) { |
| CFX_FontMapper* pMapper = static_cast<CFX_FontMapper*>(mapper); |
| pMapper->AddInstalledFont(face, FX_GetCharsetFromInt(charset)); |
| } |
| |
| FPDF_EXPORT void FPDF_CALLCONV |
| FPDF_SetSystemFontInfo(FPDF_SYSFONTINFO* pFontInfoExt) { |
| if (pFontInfoExt->version != 1) |
| return; |
| |
| CFX_GEModule::Get()->GetFontMgr()->GetBuiltinMapper()->SetSystemFontInfo( |
| std::make_unique<CFX_ExternalFontInfo>(pFontInfoExt)); |
| |
| #ifdef PDF_ENABLE_XFA |
| CFGAS_GEModule::Get()->GetFontMgr()->EnumFonts(); |
| #endif |
| } |
| |
| FPDF_EXPORT const FPDF_CharsetFontMap* FPDF_CALLCONV FPDF_GetDefaultTTFMap() { |
| return reinterpret_cast<const FPDF_CharsetFontMap*>(CFX_Font::kDefaultTTFMap); |
| } |
| |
| struct FPDF_SYSFONTINFO_DEFAULT final : public FPDF_SYSFONTINFO { |
| UnownedPtr<SystemFontInfoIface> m_pFontInfo; |
| }; |
| |
| static void DefaultRelease(struct _FPDF_SYSFONTINFO* pThis) { |
| auto* pDefault = static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pThis); |
| delete pDefault->m_pFontInfo.Release(); |
| } |
| |
| static void DefaultEnumFonts(struct _FPDF_SYSFONTINFO* pThis, void* pMapper) { |
| auto* pDefault = static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pThis); |
| pDefault->m_pFontInfo->EnumFontList(static_cast<CFX_FontMapper*>(pMapper)); |
| } |
| |
| static void* DefaultMapFont(struct _FPDF_SYSFONTINFO* pThis, |
| int weight, |
| int bItalic, |
| int charset, |
| int pitch_family, |
| const char* family, |
| int* bExact) { |
| auto* pDefault = static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pThis); |
| return pDefault->m_pFontInfo->MapFont( |
| weight, !!bItalic, FX_GetCharsetFromInt(charset), pitch_family, family); |
| } |
| |
| void* DefaultGetFont(struct _FPDF_SYSFONTINFO* pThis, const char* family) { |
| auto* pDefault = static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pThis); |
| return pDefault->m_pFontInfo->GetFont(family); |
| } |
| |
| static unsigned long DefaultGetFontData(struct _FPDF_SYSFONTINFO* pThis, |
| void* hFont, |
| unsigned int table, |
| unsigned char* buffer, |
| unsigned long buf_size) { |
| auto* pDefault = static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pThis); |
| return pdfium::base::checked_cast<unsigned long>( |
| pDefault->m_pFontInfo->GetFontData(hFont, table, {buffer, buf_size})); |
| } |
| |
| static unsigned long DefaultGetFaceName(struct _FPDF_SYSFONTINFO* pThis, |
| void* hFont, |
| char* buffer, |
| unsigned long buf_size) { |
| ByteString name; |
| auto* pDefault = static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pThis); |
| if (!pDefault->m_pFontInfo->GetFaceName(hFont, &name)) |
| return 0; |
| |
| const unsigned long copy_length = |
| pdfium::base::checked_cast<unsigned long>(name.GetLength() + 1); |
| if (copy_length <= buf_size) |
| strncpy(buffer, name.c_str(), copy_length * sizeof(ByteString::CharType)); |
| |
| return copy_length; |
| } |
| |
| static int DefaultGetFontCharset(struct _FPDF_SYSFONTINFO* pThis, void* hFont) { |
| FX_Charset charset; |
| auto* pDefault = static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pThis); |
| if (!pDefault->m_pFontInfo->GetFontCharset(hFont, &charset)) |
| return 0; |
| return static_cast<int>(charset); |
| } |
| |
| static void DefaultDeleteFont(struct _FPDF_SYSFONTINFO* pThis, void* hFont) { |
| auto* pDefault = static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pThis); |
| pDefault->m_pFontInfo->DeleteFont(hFont); |
| } |
| |
| FPDF_EXPORT FPDF_SYSFONTINFO* FPDF_CALLCONV FPDF_GetDefaultSystemFontInfo() { |
| std::unique_ptr<SystemFontInfoIface> pFontInfo = |
| CFX_GEModule::Get()->GetPlatform()->CreateDefaultSystemFontInfo(); |
| if (!pFontInfo) |
| return nullptr; |
| |
| FPDF_SYSFONTINFO_DEFAULT* pFontInfoExt = |
| FX_Alloc(FPDF_SYSFONTINFO_DEFAULT, 1); |
| pFontInfoExt->DeleteFont = DefaultDeleteFont; |
| pFontInfoExt->EnumFonts = DefaultEnumFonts; |
| pFontInfoExt->GetFaceName = DefaultGetFaceName; |
| pFontInfoExt->GetFont = DefaultGetFont; |
| pFontInfoExt->GetFontCharset = DefaultGetFontCharset; |
| pFontInfoExt->GetFontData = DefaultGetFontData; |
| pFontInfoExt->MapFont = DefaultMapFont; |
| pFontInfoExt->Release = DefaultRelease; |
| pFontInfoExt->version = 1; |
| pFontInfoExt->m_pFontInfo = pFontInfo.release(); |
| return pFontInfoExt; |
| } |
| |
| FPDF_EXPORT void FPDF_CALLCONV |
| FPDF_FreeDefaultSystemFontInfo(FPDF_SYSFONTINFO* pFontInfo) { |
| FX_Free(static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pFontInfo)); |
| } |
