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:
CFX_ExternalFontInfo(FPDF_SYSFONTINFO * pInfo)20 explicit CFX_ExternalFontInfo(FPDF_SYSFONTINFO* pInfo) : m_pInfo(pInfo) {}
~CFX_ExternalFontInfo()21 ~CFX_ExternalFontInfo() override {
22 if (m_pInfo->Release)
23 m_pInfo->Release(m_pInfo);
24 }
25
EnumFontList(CFX_FontMapper * pMapper)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
MapFont(int weight,bool bItalic,int charset,int pitch_family,const FX_CHAR * family,int & iExact)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
GetFont(const FX_CHAR * family)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
GetFontData(void * hFont,uint32_t table,uint8_t * buffer,uint32_t size)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
GetFaceName(void * hFont,CFX_ByteString & name)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
GetFontCharset(void * hFont,int & charset)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
DeleteFont(void * hFont)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
FPDF_AddInstalledFont(void * mapper,const char * name,int charset)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
FPDF_SetSystemFontInfo(FPDF_SYSFONTINFO * pFontInfoExt)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
FPDF_GetDefaultTTFMap()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
DefaultRelease(struct _FPDF_SYSFONTINFO * pThis)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
DefaultEnumFonts(struct _FPDF_SYSFONTINFO * pThis,void * pMapper)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
DefaultMapFont(struct _FPDF_SYSFONTINFO * pThis,int weight,int bItalic,int charset,int pitch_family,const char * family,int * bExact)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
DefaultGetFont(struct _FPDF_SYSFONTINFO * pThis,const char * family)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
DefaultGetFontData(struct _FPDF_SYSFONTINFO * pThis,void * hFont,unsigned int table,unsigned char * buffer,unsigned long buf_size)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
DefaultGetFaceName(struct _FPDF_SYSFONTINFO * pThis,void * hFont,char * buffer,unsigned long buf_size)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
DefaultGetFontCharset(struct _FPDF_SYSFONTINFO * pThis,void * hFont)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
DefaultDeleteFont(struct _FPDF_SYSFONTINFO * pThis,void * hFont)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
FPDF_GetDefaultSystemFontInfo()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
FPDF_FreeDefaultSystemFontInfo(FPDF_SYSFONTINFO * pDefaultFontInfo)200 DLLEXPORT void FPDF_FreeDefaultSystemFontInfo(
201 FPDF_SYSFONTINFO* pDefaultFontInfo) {
202 FX_Free(static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pDefaultFontInfo));
203 }
204