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/fxcrt/fx_codepage.h"
12 #include "core/fxge/cfx_fontmapper.h"
13 #include "core/fxge/cfx_fontmgr.h"
14 #include "core/fxge/cfx_gemodule.h"
15 #include "core/fxge/fx_font.h"
16 #include "core/fxge/ifx_systemfontinfo.h"
17 #include "fpdfsdk/fsdk_define.h"
18 #include "fpdfsdk/pwl/cpwl_font_map.h"
19 #include "third_party/base/ptr_util.h"
20
21 static_assert(FXFONT_ANSI_CHARSET == FX_CHARSET_ANSI, "Charset must match");
22 static_assert(FXFONT_DEFAULT_CHARSET == FX_CHARSET_Default,
23 "Charset must match");
24 static_assert(FXFONT_SYMBOL_CHARSET == FX_CHARSET_Symbol, "Charset must match");
25 static_assert(FXFONT_SHIFTJIS_CHARSET == FX_CHARSET_ShiftJIS,
26 "Charset must match");
27 static_assert(FXFONT_HANGEUL_CHARSET == FX_CHARSET_Hangul,
28 "Charset must match");
29 static_assert(FXFONT_GB2312_CHARSET == FX_CHARSET_ChineseSimplified,
30 "Charset must match");
31 static_assert(FXFONT_CHINESEBIG5_CHARSET == FX_CHARSET_ChineseTraditional,
32 "Charset must match");
33
34 class CFX_ExternalFontInfo final : public IFX_SystemFontInfo {
35 public:
CFX_ExternalFontInfo(FPDF_SYSFONTINFO * pInfo)36 explicit CFX_ExternalFontInfo(FPDF_SYSFONTINFO* pInfo) : m_pInfo(pInfo) {}
~CFX_ExternalFontInfo()37 ~CFX_ExternalFontInfo() override {
38 if (m_pInfo->Release)
39 m_pInfo->Release(m_pInfo);
40 }
41
EnumFontList(CFX_FontMapper * pMapper)42 bool EnumFontList(CFX_FontMapper* pMapper) override {
43 if (m_pInfo->EnumFonts) {
44 m_pInfo->EnumFonts(m_pInfo, pMapper);
45 return true;
46 }
47 return false;
48 }
49
MapFont(int weight,bool bItalic,int charset,int pitch_family,const char * family)50 void* MapFont(int weight,
51 bool bItalic,
52 int charset,
53 int pitch_family,
54 const char* family) override {
55 if (!m_pInfo->MapFont)
56 return nullptr;
57
58 int iExact;
59 return m_pInfo->MapFont(m_pInfo, weight, bItalic, charset, pitch_family,
60 family, &iExact);
61 }
62
GetFont(const char * family)63 void* GetFont(const char* family) override {
64 if (!m_pInfo->GetFont)
65 return nullptr;
66 return m_pInfo->GetFont(m_pInfo, family);
67 }
68
GetFontData(void * hFont,uint32_t table,uint8_t * buffer,uint32_t size)69 uint32_t GetFontData(void* hFont,
70 uint32_t table,
71 uint8_t* buffer,
72 uint32_t size) override {
73 if (!m_pInfo->GetFontData)
74 return 0;
75 return m_pInfo->GetFontData(m_pInfo, hFont, table, buffer, size);
76 }
77
GetFaceName(void * hFont,ByteString * name)78 bool GetFaceName(void* hFont, ByteString* name) override {
79 if (!m_pInfo->GetFaceName)
80 return false;
81 uint32_t size = m_pInfo->GetFaceName(m_pInfo, hFont, nullptr, 0);
82 if (size == 0)
83 return false;
84 char* buffer = FX_Alloc(char, size);
85 size = m_pInfo->GetFaceName(m_pInfo, hFont, buffer, size);
86 *name = ByteString(buffer, size);
87 FX_Free(buffer);
88 return true;
89 }
90
GetFontCharset(void * hFont,int * charset)91 bool GetFontCharset(void* hFont, int* charset) override {
92 if (!m_pInfo->GetFontCharset)
93 return false;
94
95 *charset = m_pInfo->GetFontCharset(m_pInfo, hFont);
96 return true;
97 }
98
DeleteFont(void * hFont)99 void DeleteFont(void* hFont) override {
100 if (m_pInfo->DeleteFont)
101 m_pInfo->DeleteFont(m_pInfo, hFont);
102 }
103
104 private:
105 FPDF_SYSFONTINFO* const m_pInfo;
106 };
107
FPDF_AddInstalledFont(void * mapper,const char * name,int charset)108 FPDF_EXPORT void FPDF_CALLCONV FPDF_AddInstalledFont(void* mapper,
109 const char* name,
110 int charset) {
111 CFX_FontMapper* pMapper = static_cast<CFX_FontMapper*>(mapper);
112 pMapper->AddInstalledFont(name, charset);
113 }
114
115 FPDF_EXPORT void FPDF_CALLCONV
FPDF_SetSystemFontInfo(FPDF_SYSFONTINFO * pFontInfoExt)116 FPDF_SetSystemFontInfo(FPDF_SYSFONTINFO* pFontInfoExt) {
117 if (pFontInfoExt->version != 1)
118 return;
119
120 CFX_GEModule::Get()->GetFontMgr()->SetSystemFontInfo(
121 pdfium::MakeUnique<CFX_ExternalFontInfo>(pFontInfoExt));
122 }
123
FPDF_GetDefaultTTFMap()124 FPDF_EXPORT const FPDF_CharsetFontMap* FPDF_CALLCONV FPDF_GetDefaultTTFMap() {
125 return CPWL_FontMap::defaultTTFMap;
126 }
127
128 struct FPDF_SYSFONTINFO_DEFAULT : public FPDF_SYSFONTINFO {
129 UnownedPtr<IFX_SystemFontInfo> m_pFontInfo;
130 };
131
DefaultRelease(struct _FPDF_SYSFONTINFO * pThis)132 static void DefaultRelease(struct _FPDF_SYSFONTINFO* pThis) {
133 auto* pDefault = static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pThis);
134 delete pDefault->m_pFontInfo.Release();
135 }
136
DefaultEnumFonts(struct _FPDF_SYSFONTINFO * pThis,void * pMapper)137 static void DefaultEnumFonts(struct _FPDF_SYSFONTINFO* pThis, void* pMapper) {
138 auto* pDefault = static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pThis);
139 pDefault->m_pFontInfo->EnumFontList((CFX_FontMapper*)pMapper);
140 }
141
DefaultMapFont(struct _FPDF_SYSFONTINFO * pThis,int weight,int bItalic,int charset,int pitch_family,const char * family,int * bExact)142 static void* DefaultMapFont(struct _FPDF_SYSFONTINFO* pThis,
143 int weight,
144 int bItalic,
145 int charset,
146 int pitch_family,
147 const char* family,
148 int* bExact) {
149 auto* pDefault = static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pThis);
150 return pDefault->m_pFontInfo->MapFont(weight, !!bItalic, charset,
151 pitch_family, family);
152 }
153
DefaultGetFont(struct _FPDF_SYSFONTINFO * pThis,const char * family)154 void* DefaultGetFont(struct _FPDF_SYSFONTINFO* pThis, const char* family) {
155 auto* pDefault = static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pThis);
156 return pDefault->m_pFontInfo->GetFont(family);
157 }
158
DefaultGetFontData(struct _FPDF_SYSFONTINFO * pThis,void * hFont,unsigned int table,unsigned char * buffer,unsigned long buf_size)159 static unsigned long DefaultGetFontData(struct _FPDF_SYSFONTINFO* pThis,
160 void* hFont,
161 unsigned int table,
162 unsigned char* buffer,
163 unsigned long buf_size) {
164 auto* pDefault = static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pThis);
165 return pDefault->m_pFontInfo->GetFontData(hFont, table, buffer, buf_size);
166 }
167
DefaultGetFaceName(struct _FPDF_SYSFONTINFO * pThis,void * hFont,char * buffer,unsigned long buf_size)168 static unsigned long DefaultGetFaceName(struct _FPDF_SYSFONTINFO* pThis,
169 void* hFont,
170 char* buffer,
171 unsigned long buf_size) {
172 ByteString name;
173 auto* pDefault = static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pThis);
174 if (!pDefault->m_pFontInfo->GetFaceName(hFont, &name))
175 return 0;
176 if (name.GetLength() >= static_cast<size_t>(buf_size))
177 return name.GetLength() + 1;
178
179 strncpy(buffer, name.c_str(),
180 (name.GetLength() + 1) * sizeof(ByteString::CharType));
181 return name.GetLength() + 1;
182 }
183
DefaultGetFontCharset(struct _FPDF_SYSFONTINFO * pThis,void * hFont)184 static int DefaultGetFontCharset(struct _FPDF_SYSFONTINFO* pThis, void* hFont) {
185 int charset;
186 auto* pDefault = static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pThis);
187 if (!pDefault->m_pFontInfo->GetFontCharset(hFont, &charset))
188 return 0;
189 return charset;
190 }
191
DefaultDeleteFont(struct _FPDF_SYSFONTINFO * pThis,void * hFont)192 static void DefaultDeleteFont(struct _FPDF_SYSFONTINFO* pThis, void* hFont) {
193 auto* pDefault = static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pThis);
194 pDefault->m_pFontInfo->DeleteFont(hFont);
195 }
196
FPDF_GetDefaultSystemFontInfo()197 FPDF_EXPORT FPDF_SYSFONTINFO* FPDF_CALLCONV FPDF_GetDefaultSystemFontInfo() {
198 std::unique_ptr<IFX_SystemFontInfo> pFontInfo =
199 IFX_SystemFontInfo::CreateDefault(nullptr);
200 if (!pFontInfo)
201 return nullptr;
202
203 FPDF_SYSFONTINFO_DEFAULT* pFontInfoExt =
204 FX_Alloc(FPDF_SYSFONTINFO_DEFAULT, 1);
205 pFontInfoExt->DeleteFont = DefaultDeleteFont;
206 pFontInfoExt->EnumFonts = DefaultEnumFonts;
207 pFontInfoExt->GetFaceName = DefaultGetFaceName;
208 pFontInfoExt->GetFont = DefaultGetFont;
209 pFontInfoExt->GetFontCharset = DefaultGetFontCharset;
210 pFontInfoExt->GetFontData = DefaultGetFontData;
211 pFontInfoExt->MapFont = DefaultMapFont;
212 pFontInfoExt->Release = DefaultRelease;
213 pFontInfoExt->version = 1;
214 pFontInfoExt->m_pFontInfo = pFontInfo.release();
215 return pFontInfoExt;
216 }
217
218 FPDF_EXPORT void FPDF_CALLCONV
FPDF_FreeDefaultSystemFontInfo(FPDF_SYSFONTINFO * pDefaultFontInfo)219 FPDF_FreeDefaultSystemFontInfo(FPDF_SYSFONTINFO* pDefaultFontInfo) {
220 FX_Free(static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pDefaultFontInfo));
221 }
222