1 #define __SP_DEFS_C__
3 /*
4 * SVG <defs> implementation
5 *
6 * Authors:
7 * Lauris Kaplinski <lauris@kaplinski.com>
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"
22 static void sp_defs_class_init(SPDefsClass *dc);
23 static void sp_defs_init(SPDefs *defs);
25 static void sp_defs_release(SPObject *object);
26 static void sp_defs_update(SPObject *object, SPCtx *ctx, guint flags);
27 static void sp_defs_modified(SPObject *object, guint flags);
28 static Inkscape::XML::Node *sp_defs_write(SPObject *object, Inkscape::XML::Node *repr, guint flags);
30 static SPObjectClass *parent_class;
32 GType sp_defs_get_type(void)
33 {
34 static GType defs_type = 0;
36 if (!defs_type) {
37 GTypeInfo defs_info = {
38 sizeof(SPDefsClass),
39 NULL, /* base_init */
40 NULL, /* base_finalize */
41 (GClassInitFunc) sp_defs_class_init,
42 NULL, /* class_finalize */
43 NULL, /* class_data */
44 sizeof(SPDefs),
45 16, /* n_preallocs */
46 (GInstanceInitFunc) sp_defs_init,
47 NULL, /* value_table */
48 };
49 defs_type = g_type_register_static(SP_TYPE_OBJECT, "SPDefs", &defs_info, (GTypeFlags) 0);
50 }
52 return defs_type;
53 }
55 static void sp_defs_class_init(SPDefsClass *dc)
56 {
57 parent_class = (SPObjectClass *) g_type_class_ref(SP_TYPE_OBJECT);
58 SPObjectClass *sp_object_class = (SPObjectClass *) dc;
60 sp_object_class->release = sp_defs_release;
61 sp_object_class->update = sp_defs_update;
62 sp_object_class->modified = sp_defs_modified;
63 sp_object_class->write = sp_defs_write;
64 }
66 static void sp_defs_init(SPDefs *defs)
67 {
69 }
71 static void sp_defs_release(SPObject *object)
72 {
73 if (((SPObjectClass *) (parent_class))->release) {
74 ((SPObjectClass *) (parent_class))->release(object);
75 }
76 }
78 static void sp_defs_update(SPObject *object, SPCtx *ctx, guint flags)
79 {
80 if (flags & SP_OBJECT_MODIFIED_FLAG) {
81 flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
82 }
84 flags &= SP_OBJECT_MODIFIED_CASCADE;
86 GSList *l = NULL;
87 for ( SPObject *child = sp_object_first_child(object) ; child != NULL; child = SP_OBJECT_NEXT(child) ) {
88 g_object_ref(G_OBJECT(child));
89 l = g_slist_prepend(l, child);
90 }
92 l = g_slist_reverse(l);
94 while (l) {
95 SPObject *child = SP_OBJECT(l->data);
96 l = g_slist_remove(l, child);
97 if (flags || (child->uflags & SP_OBJECT_MODIFIED_FLAG)) {
98 child->updateDisplay(ctx, flags);
99 }
100 g_object_unref(G_OBJECT(child));
101 }
102 }
104 static void sp_defs_modified(SPObject *object, guint flags)
105 {
106 if (flags & SP_OBJECT_MODIFIED_FLAG) {
107 flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
108 }
110 flags &= SP_OBJECT_MODIFIED_CASCADE;
112 GSList *l = NULL;
113 for ( SPObject *child = sp_object_first_child(object) ; child != NULL; child = SP_OBJECT_NEXT(child) ) {
114 g_object_ref(G_OBJECT(child));
115 l = g_slist_prepend(l, child);
116 }
118 l = g_slist_reverse(l);
120 while (l) {
121 SPObject *child = SP_OBJECT(l->data);
122 l = g_slist_remove(l, child);
123 if (flags || (child->mflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
124 child->emitModified(flags);
125 }
126 g_object_unref(G_OBJECT (child));
127 }
128 }
130 static Inkscape::XML::Node *sp_defs_write(SPObject *object, Inkscape::XML::Node *repr, guint flags)
131 {
132 if (flags & SP_OBJECT_WRITE_BUILD) {
134 if (!repr) {
135 repr = sp_repr_new("svg:defs");
136 }
138 GSList *l = NULL;
139 for ( SPObject *child = sp_object_first_child(object) ; child != NULL; child = SP_OBJECT_NEXT(child) ) {
140 Inkscape::XML::Node *crepr = child->updateRepr(NULL, flags);
141 if (crepr) l = g_slist_prepend(l, crepr);
142 }
144 while (l) {
145 repr->addChild((Inkscape::XML::Node *) l->data, NULL);
146 Inkscape::GC::release((Inkscape::XML::Node *) l->data);
147 l = g_slist_remove(l, l->data);
148 }
150 } else {
151 for ( SPObject *child = sp_object_first_child(object) ; child != NULL; child = SP_OBJECT_NEXT(child) ) {
152 child->updateRepr(flags);
153 }
154 }
156 if (((SPObjectClass *) (parent_class))->write) {
157 (* ((SPObjectClass *) (parent_class))->write)(object, repr, flags);
158 }
160 return repr;
161 }
163 /*
164 Local Variables:
165 mode:c++
166 c-file-style:"stroustrup"
167 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
168 indent-tabs-mode:nil
169 fill-column:99
170 End:
171 */
172 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :