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
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
|
#include <qpdf/QPDFFormFieldObjectHelper.hh>
#include <qpdf/QTC.hh>
#include <qpdf/QPDFAcroFormDocumentHelper.hh>
QPDFFormFieldObjectHelper::Members::~Members()
{
}
QPDFFormFieldObjectHelper::Members::Members()
{
}
QPDFFormFieldObjectHelper::QPDFFormFieldObjectHelper(QPDFObjectHandle oh) :
QPDFObjectHelper(oh),
m(new Members())
{
}
QPDFFormFieldObjectHelper::QPDFFormFieldObjectHelper() :
QPDFObjectHelper(QPDFObjectHandle::newNull()),
m(new Members())
{
}
bool
QPDFFormFieldObjectHelper::isNull()
{
return this->oh.isNull();
}
QPDFFormFieldObjectHelper
QPDFFormFieldObjectHelper::getParent()
{
return this->oh.getKey("/Parent"); // may be null
}
QPDFObjectHandle
QPDFFormFieldObjectHelper::getInheritableFieldValue(std::string const& name)
{
QPDFObjectHandle node = this->oh;
QPDFObjectHandle result(node.getKey(name));
std::set<QPDFObjGen> seen;
while (result.isNull() && node.hasKey("/Parent"))
{
seen.insert(node.getObjGen());
node = node.getKey("/Parent");
if (seen.count(node.getObjGen()))
{
break;
}
result = node.getKey(name);
if (! result.isNull())
{
QTC::TC("qpdf", "QPDFFormFieldObjectHelper non-trivial inheritance");
}
}
return result;
}
std::string
QPDFFormFieldObjectHelper::getInheritableFieldValueAsString(
std::string const& name)
{
QPDFObjectHandle fv = getInheritableFieldValue(name);
std::string result;
if (fv.isString())
{
result = fv.getUTF8Value();
}
return result;
}
std::string
QPDFFormFieldObjectHelper::getInheritableFieldValueAsName(
std::string const& name)
{
QPDFObjectHandle fv = getInheritableFieldValue(name);
std::string result;
if (fv.isName())
{
result = fv.getName();
}
return result;
}
std::string
QPDFFormFieldObjectHelper::getFieldType()
{
return getInheritableFieldValueAsName("/FT");
}
std::string
QPDFFormFieldObjectHelper::getFullyQualifiedName()
{
std::string result;
QPDFObjectHandle node = this->oh;
std::set<QPDFObjGen> seen;
while ((! node.isNull()) && (seen.count(node.getObjGen()) == 0))
{
if (node.getKey("/T").isString())
{
if (! result.empty())
{
QTC::TC("qpdf", "QPDFFormFieldObjectHelper non-trivial qualified name");
result = "." + result;
}
result = node.getKey("/T").getUTF8Value() + result;
}
seen.insert(node.getObjGen());
node = node.getKey("/Parent");
}
return result;
}
std::string
QPDFFormFieldObjectHelper::getPartialName()
{
std::string result;
if (this->oh.getKey("/T").isString())
{
result = this->oh.getKey("/T").getUTF8Value();
}
return result;
}
std::string
QPDFFormFieldObjectHelper::getAlternativeName()
{
if (this->oh.getKey("/TU").isString())
{
QTC::TC("qpdf", "QPDFFormFieldObjectHelper TU present");
return this->oh.getKey("/TU").getUTF8Value();
}
QTC::TC("qpdf", "QPDFFormFieldObjectHelper TU absent");
return getFullyQualifiedName();
}
std::string
QPDFFormFieldObjectHelper::getMappingName()
{
if (this->oh.getKey("/TM").isString())
{
QTC::TC("qpdf", "QPDFFormFieldObjectHelper TM present");
return this->oh.getKey("/TM").getUTF8Value();
}
QTC::TC("qpdf", "QPDFFormFieldObjectHelper TM absent");
return getAlternativeName();
}
QPDFObjectHandle
QPDFFormFieldObjectHelper::getValue()
{
return getInheritableFieldValue("/V");
}
std::string
QPDFFormFieldObjectHelper::getValueAsString()
{
return getInheritableFieldValueAsString("/V");
}
QPDFObjectHandle
QPDFFormFieldObjectHelper::getDefaultValue()
{
return getInheritableFieldValue("/DV");
}
std::string
QPDFFormFieldObjectHelper::getDefaultValueAsString()
{
return getInheritableFieldValueAsString("/DV");
}
std::string
QPDFFormFieldObjectHelper::getDefaultAppearance()
{
return getInheritableFieldValueAsString("/DA");
}
int
QPDFFormFieldObjectHelper::getQuadding()
{
int result = 0;
QPDFObjectHandle fv = getInheritableFieldValue("/Q");
if (fv.isInteger())
{
QTC::TC("qpdf", "QPDFFormFieldObjectHelper Q present");
result = static_cast<int>(fv.getIntValue());
}
return result;
}
int
QPDFFormFieldObjectHelper::getFlags()
{
QPDFObjectHandle f = getInheritableFieldValue("/Ff");
return f.isInteger() ? f.getIntValue() : 0;
}
bool
QPDFFormFieldObjectHelper::isText()
{
return (getFieldType() == "/Tx");
}
bool
QPDFFormFieldObjectHelper::isCheckbox()
{
return ((getFieldType() == "/Btn") &&
((getFlags() & (ff_btn_radio | ff_btn_pushbutton)) == 0));
}
bool
QPDFFormFieldObjectHelper::isRadioButton()
{
return ((getFieldType() == "/Btn") &&
((getFlags() & ff_btn_radio) == ff_btn_radio));
}
bool
QPDFFormFieldObjectHelper::isPushbutton()
{
return ((getFieldType() == "/Btn") &&
((getFlags() & ff_btn_pushbutton) == ff_btn_pushbutton));
}
bool
QPDFFormFieldObjectHelper::isChoice()
{
return (getFieldType() == "/Ch");
}
std::vector<std::string>
QPDFFormFieldObjectHelper::getChoices()
{
std::vector<std::string> result;
if (! isChoice())
{
return result;
}
QPDFObjectHandle opt = getInheritableFieldValue("/Opt");
if (opt.isArray())
{
size_t n = opt.getArrayNItems();
for (size_t i = 0; i < n; ++i)
{
QPDFObjectHandle item = opt.getArrayItem(i);
if (item.isString())
{
result.push_back(item.getUTF8Value());
}
}
}
return result;
}
void
QPDFFormFieldObjectHelper::setFieldAttribute(
std::string const& key, QPDFObjectHandle value)
{
this->oh.replaceKey(key, value);
}
void
QPDFFormFieldObjectHelper::setFieldAttribute(
std::string const& key, std::string const& utf8_value)
{
this->oh.replaceKey(key, QPDFObjectHandle::newUnicodeString(utf8_value));
}
void
QPDFFormFieldObjectHelper::setV(
QPDFObjectHandle value, bool need_appearances)
{
setFieldAttribute("/V", value);
if (need_appearances)
{
QPDF* qpdf = this->oh.getOwningQPDF();
if (! qpdf)
{
throw std::logic_error(
"QPDFFormFieldObjectHelper::setV called with"
" need_appearances = true on an object that is"
" not associated with an owning QPDF");
}
QPDFAcroFormDocumentHelper(*qpdf).setNeedAppearances(true);
}
}
void
QPDFFormFieldObjectHelper::setV(
std::string const& utf8_value, bool need_appearances)
{
setV(QPDFObjectHandle::newUnicodeString(utf8_value),
need_appearances);
}
|
