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
|
/*
* SVG <inkscape:tagref> implementation
*
* Authors:
* Theodore Janeczko
* Liam P White
*
* Copyright (C) Theodore Janeczko 2012-2014 <flutterguy317@gmail.com>
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
#include "sp-tag-use.h"
#include <cstring>
#include <string>
#include <glibmm/i18n.h>
#include "bad-uri-exception.h"
#include "display/drawing-group.h"
#include "attributes.h"
#include "document.h"
#include "uri.h"
#include "xml/repr.h"
#include "preferences.h"
#include "style.h"
#include "sp-factory.h"
#include "sp-symbol.h"
#include "sp-tag-use-reference.h"
SPTagUse::SPTagUse()
{
href = NULL;
//new (_changed_connection) sigc::connection;
ref = new SPTagUseReference(this);
_changed_connection = ref->changedSignal().connect(sigc::mem_fun(*this, &SPTagUse::href_changed));
}
SPTagUse::~SPTagUse()
{
if (child) {
detach(child);
child = NULL;
}
ref->detach();
delete ref;
ref = 0;
_changed_connection.~connection(); //FIXME why?
}
void
SPTagUse::build(SPDocument *document, Inkscape::XML::Node *repr)
{
SPObject::build(document, repr);
readAttr( "xlink:href" );
// We don't need to create child here:
// reading xlink:href will attach ref, and that will cause the changed signal to be emitted,
// which will call sp_tag_use_href_changed, and that will take care of the child
}
void
SPTagUse::release()
{
if (child) {
detach(child);
child = NULL;
}
_changed_connection.disconnect();
g_free(href);
href = NULL;
ref->detach();
SPObject::release();
}
void
SPTagUse::set(unsigned key, gchar const *value)
{
switch (key) {
case SP_ATTR_XLINK_HREF: {
if ( value && href && ( strcmp(value, href) == 0 ) ) {
/* No change, do nothing. */
} else {
g_free(href);
href = NULL;
if (value) {
// First, set the href field, because sp_tag_use_href_changed will need it.
href = g_strdup(value);
// Now do the attaching, which emits the changed signal.
try {
ref->attach(Inkscape::URI(value));
} catch (Inkscape::BadURIException &e) {
g_warning("%s", e.what());
ref->detach();
}
} else {
ref->detach();
}
}
break;
}
default:
SPObject::set(key, value);
break;
}
}
Inkscape::XML::Node *
SPTagUse::write(Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, guint flags)
{
if ((flags & SP_OBJECT_WRITE_BUILD) && !repr) {
repr = xml_doc->createElement("inkscape:tagref");
}
SPObject::write(xml_doc, repr, flags);
if (ref->getURI()) {
gchar *uri_string = ref->getURI()->toString();
repr->setAttribute("xlink:href", uri_string);
g_free(uri_string);
}
return repr;
}
/**
* Returns the ultimate original of a SPTagUse (i.e. the first object in the chain of its originals
* which is not an SPTagUse). If no original is found, NULL is returned (it is the responsibility
* of the caller to make sure that this is handled correctly).
*
* Note that the returned is the clone object, i.e. the child of an SPTagUse (of the argument one for
* the trivial case) and not the "true original".
*/
SPItem * SPTagUse::root()
{
SPObject *orig = child;
while (orig && SP_IS_TAG_USE(orig)) {
orig = SP_TAG_USE(orig)->child;
}
if (!orig || !SP_IS_ITEM(orig))
return NULL;
return SP_ITEM(orig);
}
void
SPTagUse::href_changed(SPObject */*old_ref*/, SPObject */*ref*/)
{
if (href) {
SPItem *refobj = ref->getObject();
if (refobj) {
Inkscape::XML::Node *childrepr = refobj->getRepr();
const std::string typeString = NodeTraits::get_type_string(*childrepr);
SPObject* child_ = SPFactory::createObject(typeString);
if (child_) {
child = child_;
attach(child_, lastChild());
sp_object_unref(child_, 0);
child_->invoke_build(this->document, childrepr, TRUE);
}
}
}
}
SPItem * SPTagUse::get_original()
{
SPItem *ref_ = NULL;
if (ref) {
ref_ = ref->getObject();
}
return ref_;
}
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :
|