1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
|
// Copyright 2017 PDFium Authors. All rights reserved.
// 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 "xfa/fgas/font/cfgas_pdffontmgr.h"
#include <algorithm>
#include "core/fpdfapi/font/cpdf_font.h"
#include "core/fpdfapi/parser/cpdf_document.h"
#include "xfa/fgas/font/cfgas_fontmgr.h"
#include "xfa/fgas/font/cfgas_gefont.h"
namespace {
// The 5 names per entry are: PsName, Normal, Bold, Italic, BoldItalic.
const char* const g_XFAPDFFontName[][5] = {
{"Adobe PI Std", "AdobePIStd", "AdobePIStd", "AdobePIStd", "AdobePIStd"},
{"Myriad Pro Light", "MyriadPro-Light", "MyriadPro-Semibold",
"MyriadPro-LightIt", "MyriadPro-SemiboldIt"},
};
} // namespace
CFGAS_PDFFontMgr::CFGAS_PDFFontMgr(CPDF_Document* pDoc, CFGAS_FontMgr* pFontMgr)
: m_pDoc(pDoc), m_pFontMgr(pFontMgr) {
ASSERT(pDoc);
ASSERT(pFontMgr);
}
CFGAS_PDFFontMgr::~CFGAS_PDFFontMgr() {}
RetainPtr<CFGAS_GEFont> CFGAS_PDFFontMgr::FindFont(const ByteString& strPsName,
bool bBold,
bool bItalic,
CPDF_Font** pDstPDFFont,
bool bStrictMatch) {
CPDF_Dictionary* pFontSetDict =
m_pDoc->GetRoot()->GetDictFor("AcroForm")->GetDictFor("DR");
if (!pFontSetDict)
return nullptr;
pFontSetDict = pFontSetDict->GetDictFor("Font");
if (!pFontSetDict)
return nullptr;
ByteString name = strPsName;
name.Remove(' ');
for (const auto& it : *pFontSetDict) {
const ByteString& key = it.first;
CPDF_Object* pObj = it.second.get();
if (!PsNameMatchDRFontName(name.AsStringView(), bBold, bItalic, key,
bStrictMatch)) {
continue;
}
CPDF_Dictionary* pFontDict = ToDictionary(pObj->GetDirect());
if (!pFontDict || pFontDict->GetStringFor("Type") != "Font")
return nullptr;
CPDF_Font* pPDFFont = m_pDoc->LoadFont(pFontDict);
if (!pPDFFont)
return nullptr;
if (!pPDFFont->IsEmbedded()) {
*pDstPDFFont = pPDFFont;
return nullptr;
}
return CFGAS_GEFont::LoadFont(pPDFFont->GetFont(), m_pFontMgr.Get());
}
return nullptr;
}
RetainPtr<CFGAS_GEFont> CFGAS_PDFFontMgr::GetFont(
const WideStringView& wsFontFamily,
uint32_t dwFontStyles,
CPDF_Font** pPDFFont,
bool bStrictMatch) {
uint32_t dwHashCode = FX_HashCode_GetW(wsFontFamily, false);
ByteString strKey = ByteString::Format("%u%u", dwHashCode, dwFontStyles);
auto it = m_FontMap.find(strKey);
if (it != m_FontMap.end())
return it->second;
ByteString bsPsName = ByteString::FromUnicode(WideString(wsFontFamily));
bool bBold = FontStyleIsBold(dwFontStyles);
bool bItalic = FontStyleIsItalic(dwFontStyles);
ByteString strFontName = PsNameToFontName(bsPsName, bBold, bItalic);
RetainPtr<CFGAS_GEFont> pFont =
FindFont(strFontName, bBold, bItalic, pPDFFont, bStrictMatch);
if (pFont)
m_FontMap[strKey] = pFont;
return pFont;
}
ByteString CFGAS_PDFFontMgr::PsNameToFontName(const ByteString& strPsName,
bool bBold,
bool bItalic) {
for (size_t i = 0; i < FX_ArraySize(g_XFAPDFFontName); ++i) {
if (strPsName == g_XFAPDFFontName[i][0]) {
size_t index = 1;
if (bBold)
++index;
if (bItalic)
index += 2;
return g_XFAPDFFontName[i][index];
}
}
return strPsName;
}
bool CFGAS_PDFFontMgr::PsNameMatchDRFontName(const ByteStringView& bsPsName,
bool bBold,
bool bItalic,
const ByteString& bsDRFontName,
bool bStrictMatch) {
ByteString bsDRName = bsDRFontName;
bsDRName.Remove('-');
size_t iPsLen = bsPsName.GetLength();
auto nIndex = bsDRName.Find(bsPsName);
if (nIndex.has_value() && !bStrictMatch)
return true;
if (!nIndex.has_value() || nIndex.value() != 0)
return false;
size_t iDifferLength = bsDRName.GetLength() - iPsLen;
if (iDifferLength > 1 || (bBold || bItalic)) {
auto iBoldIndex = bsDRName.Find("Bold");
if (bBold != iBoldIndex.has_value())
return false;
if (iBoldIndex.has_value()) {
iDifferLength = std::min(iDifferLength - 4,
bsDRName.GetLength() - iBoldIndex.value() - 4);
}
bool bItalicFont = true;
if (bsDRName.Contains("Italic"))
iDifferLength -= 6;
else if (bsDRName.Contains("It"))
iDifferLength -= 2;
else if (bsDRName.Contains("Oblique"))
iDifferLength -= 7;
else
bItalicFont = false;
if (bItalic != bItalicFont)
return false;
if (iDifferLength > 1) {
ByteString bsDRTailer = bsDRName.Right(iDifferLength);
if (bsDRTailer == "MT" || bsDRTailer == "PSMT" ||
bsDRTailer == "Regular" || bsDRTailer == "Reg") {
return true;
}
if (iBoldIndex.has_value() || bItalicFont)
return false;
bool bMatch = false;
switch (bsPsName[iPsLen - 1]) {
case 'L':
if (bsDRName.Right(5) == "Light")
bMatch = true;
break;
case 'R':
if (bsDRName.Right(7) == "Regular" || bsDRName.Right(3) == "Reg")
bMatch = true;
break;
case 'M':
if (bsDRName.Right(5) == "Medium")
bMatch = true;
break;
default:
break;
}
return bMatch;
}
}
return true;
}
bool CFGAS_PDFFontMgr::GetCharWidth(const RetainPtr<CFGAS_GEFont>& pFont,
wchar_t wUnicode,
int32_t* pWidth) {
if (wUnicode != 0x20)
return false;
auto it = m_FDE2PDFFont.find(pFont);
if (it == m_FDE2PDFFont.end())
return false;
CPDF_Font* pPDFFont = it->second;
*pWidth = pPDFFont->GetCharWidthF(pPDFFont->CharCodeFromUnicode(wUnicode));
return true;
}
void CFGAS_PDFFontMgr::SetFont(const RetainPtr<CFGAS_GEFont>& pFont,
CPDF_Font* pPDFFont) {
m_FDE2PDFFont[pFont] = pPDFFont;
}
|
