1 /** \file
2 * feMergeNode implementation. A feMergeNode contains the name of one
3 * input image for feMerge.
4 */
5 /*
6 * Authors:
7 * Kees Cook <kees@outflux.net>
8 * Niko Kiirala <niko@kiirala.com>
9 * Abhishek Sharma
10 *
11 * Copyright (C) 2004,2007 authors
12 *
13 * Released under GNU GPL, read the file 'COPYING' for more information
14 */
16 #ifdef HAVE_CONFIG_H
17 # include "config.h"
18 #endif
20 #include "attributes.h"
21 #include "xml/repr.h"
22 #include "mergenode.h"
23 #include "merge.h"
25 static void sp_feMergeNode_class_init(SPFeMergeNodeClass *klass);
26 static void sp_feMergeNode_init(SPFeMergeNode *skeleton);
28 static void sp_feMergeNode_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
29 static void sp_feMergeNode_release(SPObject *object);
30 static void sp_feMergeNode_set(SPObject *object, unsigned int key, gchar const *value);
31 static void sp_feMergeNode_update(SPObject *object, SPCtx *ctx, guint flags);
32 static Inkscape::XML::Node *sp_feMergeNode_write(SPObject *object, Inkscape::XML::Document *doc, Inkscape::XML::Node *repr, guint flags);
34 static SPObjectClass *feMergeNode_parent_class;
36 GType
37 sp_feMergeNode_get_type()
38 {
39 static GType feMergeNode_type = 0;
41 if (!feMergeNode_type) {
42 GTypeInfo feMergeNode_info = {
43 sizeof(SPFeMergeNodeClass),
44 NULL, NULL,
45 (GClassInitFunc) sp_feMergeNode_class_init,
46 NULL, NULL,
47 sizeof(SPFeMergeNode),
48 16,
49 (GInstanceInitFunc) sp_feMergeNode_init,
50 NULL, /* value_table */
51 };
52 feMergeNode_type = g_type_register_static(SP_TYPE_OBJECT, "SPFeMergeNode", &feMergeNode_info, (GTypeFlags)0);
53 }
54 return feMergeNode_type;
55 }
57 static void
58 sp_feMergeNode_class_init(SPFeMergeNodeClass *klass)
59 {
60 //GObjectClass *gobject_class = (GObjectClass *)klass;
61 SPObjectClass *sp_object_class = (SPObjectClass *)klass;
63 feMergeNode_parent_class = (SPObjectClass*)g_type_class_peek_parent(klass);
65 sp_object_class->build = sp_feMergeNode_build;
66 sp_object_class->release = sp_feMergeNode_release;
67 sp_object_class->write = sp_feMergeNode_write;
68 sp_object_class->set = sp_feMergeNode_set;
69 sp_object_class->update = sp_feMergeNode_update;
70 }
72 static void
73 sp_feMergeNode_init(SPFeMergeNode *feMergeNode)
74 {
75 feMergeNode->input = Inkscape::Filters::NR_FILTER_SLOT_NOT_SET;
76 }
78 /**
79 * Reads the Inkscape::XML::Node, and initializes SPFeMergeNode variables. For this to get called,
80 * our name must be associated with a repr via "sp_object_type_register". Best done through
81 * sp-object-repr.cpp's repr_name_entries array.
82 */
83 static void
84 sp_feMergeNode_build(SPObject *object, SPDocument */*document*/, Inkscape::XML::Node */*repr*/)
85 {
86 object->readAttr( "in" );
87 }
89 /**
90 * Drops any allocated memory.
91 */
92 static void
93 sp_feMergeNode_release(SPObject *object)
94 {
95 /* deal with our children and our selves here */
97 if (((SPObjectClass *) feMergeNode_parent_class)->release)
98 ((SPObjectClass *) feMergeNode_parent_class)->release(object);
99 }
101 /**
102 * Sets a specific value in the SPFeMergeNode.
103 */
104 static void
105 sp_feMergeNode_set(SPObject *object, unsigned int key, gchar const *value)
106 {
107 SPFeMergeNode *feMergeNode = SP_FEMERGENODE(object);
108 SPFeMerge *parent = SP_FEMERGE(object->parent);
110 if (key == SP_ATTR_IN) {
111 int input = sp_filter_primitive_read_in(parent, value);
112 if (input != feMergeNode->input) {
113 feMergeNode->input = input;
114 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
115 }
116 }
118 /* See if any parents need this value. */
119 if (((SPObjectClass *) feMergeNode_parent_class)->set) {
120 ((SPObjectClass *) feMergeNode_parent_class)->set(object, key, value);
121 }
122 }
124 /**
125 * Receives update notifications.
126 */
127 static void
128 sp_feMergeNode_update(SPObject *object, SPCtx *ctx, guint flags)
129 {
130 //SPFeMergeNode *feMergeNode = SP_FEMERGENODE(object);
132 if (flags & SP_OBJECT_MODIFIED_FLAG) {
133 object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
134 }
136 if (((SPObjectClass *) feMergeNode_parent_class)->update) {
137 ((SPObjectClass *) feMergeNode_parent_class)->update(object, ctx, flags);
138 }
139 }
141 /**
142 * Writes its settings to an incoming repr object, if any.
143 */
144 static Inkscape::XML::Node *
145 sp_feMergeNode_write(SPObject *object, Inkscape::XML::Document *doc, Inkscape::XML::Node *repr, guint flags)
146 {
147 //SPFeMergeNode *feMergeNode = SP_FEMERGENODE(object);
149 // Inkscape-only object, not copied during an "plain SVG" dump:
150 if (flags & SP_OBJECT_WRITE_EXT) {
151 if (repr) {
152 // is this sane?
153 //repr->mergeFrom(SP_OBJECT_REPR(object), "id");
154 } else {
155 repr = SP_OBJECT_REPR(object)->duplicate(doc);
156 }
157 }
159 if (((SPObjectClass *) feMergeNode_parent_class)->write) {
160 ((SPObjectClass *) feMergeNode_parent_class)->write(object, doc, repr, flags);
161 }
163 return repr;
164 }
167 /*
168 Local Variables:
169 mode:c++
170 c-file-style:"stroustrup"
171 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
172 indent-tabs-mode:nil
173 fill-column:99
174 End:
175 */
176 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :