1 // Copyright 2014 PDFium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com 6 7 #include "public/fpdf_sysfontinfo.h" 8 9 #include <memory> 10 11 #include "core/fxge/cfx_fontmapper.h" 12 #include "core/fxge/cfx_gemodule.h" 13 #include "core/fxge/fx_font.h" 14 #include "core/fxge/ifx_systemfontinfo.h" 15 #include "fpdfsdk/fsdk_define.h" 16 #include "fpdfsdk/pdfwindow/PWL_FontMap.h" 17 18 class CFX_ExternalFontInfo final : public IFX_SystemFontInfo { 19 public: 20 explicit CFX_ExternalFontInfo(FPDF_SYSFONTINFO* pInfo) : m_pInfo(pInfo) {} 21 ~CFX_ExternalFontInfo() override { 22 if (m_pInfo->Release) 23 m_pInfo->Release(m_pInfo); 24 } 25 26 bool EnumFontList(CFX_FontMapper* pMapper) override { 27 if (m_pInfo->EnumFonts) { 28 m_pInfo->EnumFonts(m_pInfo, pMapper); 29 return true; 30 } 31 return false; 32 } 33 34 void* MapFont(int weight, 35 bool bItalic, 36 int charset, 37 int pitch_family, 38 const FX_CHAR* family, 39 int& iExact) override { 40 if (!m_pInfo->MapFont) 41 return nullptr; 42 return m_pInfo->MapFont(m_pInfo, weight, bItalic, charset, pitch_family, 43 family, &iExact); 44 } 45 46 void* GetFont(const FX_CHAR* family) override { 47 if (!m_pInfo->GetFont) 48 return nullptr; 49 return m_pInfo->GetFont(m_pInfo, family); 50 } 51 52 uint32_t GetFontData(void* hFont, 53 uint32_t table, 54 uint8_t* buffer, 55 uint32_t size) override { 56 if (!m_pInfo->GetFontData) 57 return 0; 58 return m_pInfo->GetFontData(m_pInfo, hFont, table, buffer, size); 59 } 60 61 bool GetFaceName(void* hFont, CFX_ByteString& name) override { 62 if (!m_pInfo->GetFaceName) 63 return false; 64 uint32_t size = m_pInfo->GetFaceName(m_pInfo, hFont, nullptr, 0); 65 if (size == 0) 66 return false; 67 char* buffer = FX_Alloc(char, size); 68 size = m_pInfo->GetFaceName(m_pInfo, hFont, buffer, size); 69 name = CFX_ByteString(buffer, size); 70 FX_Free(buffer); 71 return true; 72 } 73 74 bool GetFontCharset(void* hFont, int& charset) override { 75 if (!m_pInfo->GetFontCharset) 76 return false; 77 78 charset = m_pInfo->GetFontCharset(m_pInfo, hFont); 79 return true; 80 } 81 82 void DeleteFont(void* hFont) override { 83 if (m_pInfo->DeleteFont) 84 m_pInfo->DeleteFont(m_pInfo, hFont); 85 } 86 87 private: 88 FPDF_SYSFONTINFO* const m_pInfo; 89 }; 90 91 DLLEXPORT void STDCALL FPDF_AddInstalledFont(void* mapper, 92 const char* name, 93 int charset) { 94 CFX_FontMapper* pMapper = reinterpret_cast<CFX_FontMapper*>(mapper); 95 pMapper->AddInstalledFont(name, charset); 96 } 97 98 DLLEXPORT void STDCALL FPDF_SetSystemFontInfo(FPDF_SYSFONTINFO* pFontInfoExt) { 99 if (pFontInfoExt->version != 1) 100 return; 101 102 CFX_GEModule::Get()->GetFontMgr()->SetSystemFontInfo( 103 std::unique_ptr<IFX_SystemFontInfo>( 104 new CFX_ExternalFontInfo(pFontInfoExt))); 105 } 106 107 DLLEXPORT const FPDF_CharsetFontMap* STDCALL FPDF_GetDefaultTTFMap() { 108 return CPWL_FontMap::defaultTTFMap; 109 } 110 111 struct FPDF_SYSFONTINFO_DEFAULT : public FPDF_SYSFONTINFO { 112 IFX_SystemFontInfo* m_pFontInfo; 113 }; 114 115 static void DefaultRelease(struct _FPDF_SYSFONTINFO* pThis) { 116 auto* pDefault = static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pThis); 117 // TODO(thestig): Should this be set to nullptr too? 118 delete pDefault->m_pFontInfo; 119 } 120 121 static void DefaultEnumFonts(struct _FPDF_SYSFONTINFO* pThis, void* pMapper) { 122 auto* pDefault = static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pThis); 123 pDefault->m_pFontInfo->EnumFontList((CFX_FontMapper*)pMapper); 124 } 125 126 static void* DefaultMapFont(struct _FPDF_SYSFONTINFO* pThis, 127 int weight, 128 int bItalic, 129 int charset, 130 int pitch_family, 131 const char* family, 132 int* bExact) { 133 auto* pDefault = static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pThis); 134 return pDefault->m_pFontInfo->MapFont(weight, !!bItalic, charset, 135 pitch_family, family, *bExact); 136 } 137 138 void* DefaultGetFont(struct _FPDF_SYSFONTINFO* pThis, const char* family) { 139 auto* pDefault = static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pThis); 140 return pDefault->m_pFontInfo->GetFont(family); 141 } 142 143 static unsigned long DefaultGetFontData(struct _FPDF_SYSFONTINFO* pThis, 144 void* hFont, 145 unsigned int table, 146 unsigned char* buffer, 147 unsigned long buf_size) { 148 auto* pDefault = static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pThis); 149 return pDefault->m_pFontInfo->GetFontData(hFont, table, buffer, buf_size); 150 } 151 152 static unsigned long DefaultGetFaceName(struct _FPDF_SYSFONTINFO* pThis, 153 void* hFont, 154 char* buffer, 155 unsigned long buf_size) { 156 CFX_ByteString name; 157 auto* pDefault = static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pThis); 158 if (!pDefault->m_pFontInfo->GetFaceName(hFont, name)) 159 return 0; 160 if (name.GetLength() >= (long)buf_size) 161 return name.GetLength() + 1; 162 FXSYS_strcpy(buffer, name.c_str()); 163 return name.GetLength() + 1; 164 } 165 166 static int DefaultGetFontCharset(struct _FPDF_SYSFONTINFO* pThis, void* hFont) { 167 int charset; 168 auto* pDefault = static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pThis); 169 if (!pDefault->m_pFontInfo->GetFontCharset(hFont, charset)) 170 return 0; 171 return charset; 172 } 173 174 static void DefaultDeleteFont(struct _FPDF_SYSFONTINFO* pThis, void* hFont) { 175 auto* pDefault = static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pThis); 176 pDefault->m_pFontInfo->DeleteFont(hFont); 177 } 178 179 DLLEXPORT FPDF_SYSFONTINFO* STDCALL FPDF_GetDefaultSystemFontInfo() { 180 std::unique_ptr<IFX_SystemFontInfo> pFontInfo = 181 IFX_SystemFontInfo::CreateDefault(nullptr); 182 if (!pFontInfo) 183 return nullptr; 184 185 FPDF_SYSFONTINFO_DEFAULT* pFontInfoExt = 186 FX_Alloc(FPDF_SYSFONTINFO_DEFAULT, 1); 187 pFontInfoExt->DeleteFont = DefaultDeleteFont; 188 pFontInfoExt->EnumFonts = DefaultEnumFonts; 189 pFontInfoExt->GetFaceName = DefaultGetFaceName; 190 pFontInfoExt->GetFont = DefaultGetFont; 191 pFontInfoExt->GetFontCharset = DefaultGetFontCharset; 192 pFontInfoExt->GetFontData = DefaultGetFontData; 193 pFontInfoExt->MapFont = DefaultMapFont; 194 pFontInfoExt->Release = DefaultRelease; 195 pFontInfoExt->version = 1; 196 pFontInfoExt->m_pFontInfo = pFontInfo.release(); 197 return pFontInfoExt; 198 } 199 200 DLLEXPORT void FPDF_FreeDefaultSystemFontInfo( 201 FPDF_SYSFONTINFO* pDefaultFontInfo) { 202 FX_Free(static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pDefaultFontInfo)); 203 } 204
