1 #define __SP_FILTER_PRIMITIVE_CPP__
3 /** \file
4 * Superclass for all the filter primitives
5 *
6 */
7 /*
8 * Authors:
9 * Kees Cook <kees@outflux.net>
10 *
11 * Copyright (C) 2004 Kees Cook
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 "sp-filter-primitive.h"
22 #include "xml/repr.h"
23 #include "sp-filter.h"
25 /* FilterPrimitive base class */
27 static void sp_filter_primitive_class_init(SPFilterPrimitiveClass *klass);
28 static void sp_filter_primitive_init(SPFilterPrimitive *filter_primitive);
30 static void sp_filter_primitive_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
31 static void sp_filter_primitive_release(SPObject *object);
32 static void sp_filter_primitive_set(SPObject *object, unsigned int key, gchar const *value);
33 static void sp_filter_primitive_update(SPObject *object, SPCtx *ctx, guint flags);
34 static Inkscape::XML::Node *sp_filter_primitive_write(SPObject *object, Inkscape::XML::Node *repr, guint flags);
36 static SPObjectClass *filter_primitive_parent_class;
38 GType
39 sp_filter_primitive_get_type()
40 {
41 static GType filter_primitive_type = 0;
43 if (!filter_primitive_type) {
44 GTypeInfo filter_primitive_info = {
45 sizeof(SPFilterPrimitiveClass),
46 NULL, NULL,
47 (GClassInitFunc) sp_filter_primitive_class_init,
48 NULL, NULL,
49 sizeof(SPFilterPrimitive),
50 16,
51 (GInstanceInitFunc) sp_filter_primitive_init,
52 NULL, /* value_table */
53 };
54 filter_primitive_type = g_type_register_static(SP_TYPE_OBJECT, "SPFilterPrimitive", &filter_primitive_info, (GTypeFlags)0);
55 }
56 return filter_primitive_type;
57 }
59 static void
60 sp_filter_primitive_class_init(SPFilterPrimitiveClass *klass)
61 {
62 //GObjectClass *gobject_class = (GObjectClass *)klass;
63 SPObjectClass *sp_object_class = (SPObjectClass *)klass;
65 filter_primitive_parent_class = (SPObjectClass*)g_type_class_peek_parent(klass);
67 sp_object_class->build = sp_filter_primitive_build;
68 sp_object_class->release = sp_filter_primitive_release;
69 sp_object_class->write = sp_filter_primitive_write;
70 sp_object_class->set = sp_filter_primitive_set;
71 sp_object_class->update = sp_filter_primitive_update;
72 }
74 static void
75 sp_filter_primitive_init(SPFilterPrimitive *filter_primitive)
76 {
77 }
79 /**
80 * Reads the Inkscape::XML::Node, and initializes SPFilterPrimitive variables. For this to get called,
81 * our name must be associated with a repr via "sp_object_type_register". Best done through
82 * sp-object-repr.cpp's repr_name_entries array.
83 */
84 static void
85 sp_filter_primitive_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
86 {
87 if (((SPObjectClass *) filter_primitive_parent_class)->build) {
88 ((SPObjectClass *) filter_primitive_parent_class)->build(object, document, repr);
89 }
91 if (object->parent)
92 add_primitive((SPFilter*)object->parent, (SPFilterPrimitive*)object);
93 }
95 /**
96 * Drops any allocated memory.
97 */
98 static void
99 sp_filter_primitive_release(SPObject *object)
100 {
101 /* deal with our children and our selves here */
102 if (((SPObjectClass *) filter_primitive_parent_class)->release)
103 ((SPObjectClass *) filter_primitive_parent_class)->release(object);
104 }
106 /**
107 * Sets a specific value in the SPFilterPrimitive.
108 */
109 static void
110 sp_filter_primitive_set(SPObject *object, unsigned int key, gchar const *value)
111 {
112 SPFilterPrimitive *filter_primitive = SP_FILTER_PRIMITIVE(object);
113 (void)filter_primitive;
115 /* See if any parents need this value. */
116 if (((SPObjectClass *) filter_primitive_parent_class)->set) {
117 ((SPObjectClass *) filter_primitive_parent_class)->set(object, key, value);
118 }
119 }
121 /**
122 * Receives update notifications.
123 */
124 static void
125 sp_filter_primitive_update(SPObject *object, SPCtx *ctx, guint flags)
126 {
127 //SPFilterPrimitive *filter_primitive = SP_FILTER_PRIMITIVE(object);
129 if (flags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG |
130 SP_OBJECT_VIEWPORT_MODIFIED_FLAG)) {
132 /* do something to trigger redisplay, updates? */
133 }
135 if (((SPObjectClass *) filter_primitive_parent_class)->update) {
136 ((SPObjectClass *) filter_primitive_parent_class)->update(object, ctx, flags);
137 }
138 }
140 /**
141 * Writes its settings to an incoming repr object, if any.
142 */
143 static Inkscape::XML::Node *
144 sp_filter_primitive_write(SPObject *object, Inkscape::XML::Node *repr, guint flags)
145 {
146 //SPFilterPrimitive *filterPrimitive = SP_FILTER_PRIMITIVE(object);
148 // Inkscape-only object, not copied during an "plain SVG" dump:
149 if (flags & SP_OBJECT_WRITE_EXT) {
150 if (repr) {
151 // is this sane?
152 //repr->mergeFrom(SP_OBJECT_REPR(object), "id");
153 } else {
154 /// \todo FIXME: Plumb an appropriate XML::Document into this
155 repr = SP_OBJECT_REPR(object)->duplicate(NULL);
156 }
157 }
159 if (((SPObjectClass *) filter_primitive_parent_class)->write) {
160 ((SPObjectClass *) filter_primitive_parent_class)->write(object, 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:encoding=utf-8:textwidth=99 :