1 /*
2 * SVG <defs> implementation
3 *
4 * Authors:
5 * Lauris Kaplinski <lauris@kaplinski.com>
6 * Jon A. Cruz <jon@joncruz.org>
7 * Abhishek Sharma
8 *
9 * Copyright (C) 2000-2002 authors
10 *
11 * Released under GNU GPL, read the file 'COPYING' for more information
12 */
14 /*
15 * fixme: We should really check childrens validity - currently everything
16 * flips in
17 */
19 #include "sp-defs.h"
20 #include "xml/repr.h"
21 #include "document.h"
23 SPObjectClass * SPDefsClass::static_parent_class = 0;
25 GType SPDefs::sp_defs_get_type(void)
26 {
27 static GType defs_type = 0;
29 if (!defs_type) {
30 GTypeInfo defs_info = {
31 sizeof(SPDefsClass),
32 NULL, /* base_init */
33 NULL, /* base_finalize */
34 (GClassInitFunc) SPDefsClass::sp_defs_class_init,
35 NULL, /* class_finalize */
36 NULL, /* class_data */
37 sizeof(SPDefs),
38 16, /* n_preallocs */
39 (GInstanceInitFunc) init,
40 NULL, /* value_table */
41 };
42 defs_type = g_type_register_static(SP_TYPE_OBJECT, "SPDefs", &defs_info, (GTypeFlags) 0);
43 }
45 return defs_type;
46 }
48 void SPDefsClass::sp_defs_class_init(SPDefsClass *dc)
49 {
50 static_parent_class = (SPObjectClass *) g_type_class_ref(SP_TYPE_OBJECT);
51 SPObjectClass *sp_object_class = (SPObjectClass *) dc;
53 sp_object_class->release = SPDefs::release;
54 sp_object_class->update = SPDefs::update;
55 sp_object_class->modified = SPDefs::modified;
56 sp_object_class->write = SPDefs::write;
57 }
59 void SPDefs::init(SPDefs */*defs*/)
60 {
62 }
64 void SPDefs::release(SPObject *object)
65 {
66 if (((SPObjectClass *) (SPDefsClass::static_parent_class))->release) {
67 ((SPObjectClass *) (SPDefsClass::static_parent_class))->release(object);
68 }
69 }
71 void SPDefs::update(SPObject *object, SPCtx *ctx, guint flags)
72 {
73 if (flags & SP_OBJECT_MODIFIED_FLAG) {
74 flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
75 }
77 flags &= SP_OBJECT_MODIFIED_CASCADE;
79 GSList *l = g_slist_reverse(object->childList(true));
80 while (l) {
81 SPObject *child = SP_OBJECT(l->data);
82 l = g_slist_remove(l, child);
83 if (flags || (child->uflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
84 child->updateDisplay(ctx, flags);
85 }
86 g_object_unref (G_OBJECT (child));
87 }
88 }
90 void SPDefs::modified(SPObject *object, guint flags)
91 {
92 if (flags & SP_OBJECT_MODIFIED_FLAG) {
93 flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
94 }
96 flags &= SP_OBJECT_MODIFIED_CASCADE;
98 GSList *l = NULL;
99 for ( SPObject *child = object->firstChild() ; child; child = child->getNext() ) {
100 g_object_ref(G_OBJECT(child));
101 l = g_slist_prepend(l, child);
102 }
104 l = g_slist_reverse(l);
106 while (l) {
107 SPObject *child = SP_OBJECT(l->data);
108 l = g_slist_remove(l, child);
109 if (flags || (child->mflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
110 child->emitModified(flags);
111 }
112 g_object_unref( G_OBJECT(child) );
113 }
114 }
116 Inkscape::XML::Node * SPDefs::write(SPObject *object, Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, guint flags)
117 {
118 if (flags & SP_OBJECT_WRITE_BUILD) {
120 if (!repr) {
121 repr = xml_doc->createElement("svg:defs");
122 }
124 GSList *l = NULL;
125 for ( SPObject *child = object->firstChild() ; child; child = child->getNext() ) {
126 Inkscape::XML::Node *crepr = child->updateRepr(xml_doc, NULL, flags);
127 if (crepr) {
128 l = g_slist_prepend(l, crepr);
129 }
130 }
132 while (l) {
133 repr->addChild((Inkscape::XML::Node *) l->data, NULL);
134 Inkscape::GC::release((Inkscape::XML::Node *) l->data);
135 l = g_slist_remove(l, l->data);
136 }
138 } else {
139 for ( SPObject *child = object->firstChild() ; child; child = child->getNext() ) {
140 child->updateRepr(flags);
141 }
142 }
144 if (((SPObjectClass *) (SPDefsClass::static_parent_class))->write) {
145 (* ((SPObjectClass *) (SPDefsClass::static_parent_class))->write)(object, xml_doc, repr, flags);
146 }
148 return repr;
149 }
151 /*
152 Local Variables:
153 mode:c++
154 c-file-style:"stroustrup"
155 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
156 indent-tabs-mode:nil
157 fill-column:99
158 End:
159 */
160 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :