1 #define __SP_FECOMPONENTTRANSFER_CPP__
3 /** \file
4 * SVG <feComponentTransfer> implementation.
5 *
6 */
7 /*
8 * Authors:
9 * hugo Rodrigues <haa.rodrigues@gmail.com>
10 *
11 * Copyright (C) 2006 Hugo Rodrigues
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 <string.h>
22 #include "document.h"
23 #include "attributes.h"
24 #include "svg/svg.h"
25 #include "componenttransfer.h"
26 #include "componenttransfer-funcnode.h"
27 #include "xml/repr.h"
28 #include "display/nr-filter-component-transfer.h"
30 /* FeComponentTransfer base class */
32 static void sp_feComponentTransfer_class_init(SPFeComponentTransferClass *klass);
33 static void sp_feComponentTransfer_init(SPFeComponentTransfer *feComponentTransfer);
35 static void sp_feComponentTransfer_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
36 static void sp_feComponentTransfer_release(SPObject *object);
37 static void sp_feComponentTransfer_set(SPObject *object, unsigned int key, gchar const *value);
38 static void sp_feComponentTransfer_update(SPObject *object, SPCtx *ctx, guint flags);
39 static void sp_feComponentTransfer_build_renderer(SPFilterPrimitive *primitive, Inkscape::Filters::Filter *filter);
40 static void sp_feComponentTransfer_remove_child(SPObject *object, Inkscape::XML::Node *child);
41 static void sp_feComponentTransfer_child_added(SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *ref);
42 static Inkscape::XML::Node *sp_feComponentTransfer_write(SPObject *object, Inkscape::XML::Document *doc, Inkscape::XML::Node *repr, guint flags);
43 static SPFilterPrimitiveClass *feComponentTransfer_parent_class;
45 GType
46 sp_feComponentTransfer_get_type()
47 {
48 static GType feComponentTransfer_type = 0;
50 if (!feComponentTransfer_type) {
51 GTypeInfo feComponentTransfer_info = {
52 sizeof(SPFeComponentTransferClass),
53 NULL, NULL,
54 (GClassInitFunc) sp_feComponentTransfer_class_init,
55 NULL, NULL,
56 sizeof(SPFeComponentTransfer),
57 16,
58 (GInstanceInitFunc) sp_feComponentTransfer_init,
59 NULL, /* value_table */
60 };
61 feComponentTransfer_type = g_type_register_static(SP_TYPE_FILTER_PRIMITIVE, "SPFeComponentTransfer", &feComponentTransfer_info, (GTypeFlags)0);
62 }
63 return feComponentTransfer_type;
64 }
66 static void
67 sp_feComponentTransfer_class_init(SPFeComponentTransferClass *klass)
68 {
69 SPObjectClass *sp_object_class = (SPObjectClass *)klass;
70 SPFilterPrimitiveClass *sp_primitive_class = (SPFilterPrimitiveClass *)klass;
71 feComponentTransfer_parent_class = (SPFilterPrimitiveClass*)g_type_class_peek_parent(klass);
73 sp_object_class->build = sp_feComponentTransfer_build;
74 sp_object_class->release = sp_feComponentTransfer_release;
75 sp_object_class->write = sp_feComponentTransfer_write;
76 sp_object_class->set = sp_feComponentTransfer_set;
77 sp_object_class->update = sp_feComponentTransfer_update;
78 sp_object_class->child_added = sp_feComponentTransfer_child_added;
79 sp_object_class->remove_child = sp_feComponentTransfer_remove_child;
81 sp_primitive_class->build_renderer = sp_feComponentTransfer_build_renderer;
82 }
84 static void
85 sp_feComponentTransfer_init(SPFeComponentTransfer */*feComponentTransfer*/)
86 {}
88 /**
89 * Reads the Inkscape::XML::Node, and initializes SPFeComponentTransfer variables. For this to get called,
90 * our name must be associated with a repr via "sp_object_type_register". Best done through
91 * sp-object-repr.cpp's repr_name_entries array.
92 */
93 static void
94 sp_feComponentTransfer_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
95 {
96 if (((SPObjectClass *) feComponentTransfer_parent_class)->build) {
97 ((SPObjectClass *) feComponentTransfer_parent_class)->build(object, document, repr);
98 }
100 /*LOAD ATTRIBUTES FROM REPR HERE*/
102 //do we need this?
103 sp_document_add_resource(document, "feComponentTransfer", object);
104 }
106 static void sp_feComponentTransfer_children_modified(SPFeComponentTransfer *sp_componenttransfer)
107 {
108 if (sp_componenttransfer->renderer) {
109 bool set[4] = {false, false, false, false};
110 SPObject* node = sp_componenttransfer->children;
111 for(;node;node=node->next){
112 int i=4;
113 if (SP_IS_FEFUNCR(node)) i=0;
114 if (SP_IS_FEFUNCG(node)) i=1;
115 if (SP_IS_FEFUNCB(node)) i=2;
116 if (SP_IS_FEFUNCA(node)) i=3;
117 if (i==4) {
118 g_warning("Unrecognized channel for component transfer.");
119 break;
120 }
121 sp_componenttransfer->renderer->type[i] = ((SPFeFuncNode *) node)->type;
122 sp_componenttransfer->renderer->tableValues[i] = ((SPFeFuncNode *) node)->tableValues;
123 sp_componenttransfer->renderer->slope[i] = ((SPFeFuncNode *) node)->slope;
124 sp_componenttransfer->renderer->intercept[i] = ((SPFeFuncNode *) node)->intercept;
125 sp_componenttransfer->renderer->amplitude[i] = ((SPFeFuncNode *) node)->amplitude;
126 sp_componenttransfer->renderer->exponent[i] = ((SPFeFuncNode *) node)->exponent;
127 sp_componenttransfer->renderer->offset[i] = ((SPFeFuncNode *) node)->offset;
128 set[i] = true;
129 }
130 // Set any types not explicitly set to the identity transform
131 for(int i=0;i<4;i++) {
132 if (!set[i]) {
133 sp_componenttransfer->renderer->type[i] = Inkscape::Filters::COMPONENTTRANSFER_TYPE_IDENTITY;
134 }
135 }
136 }
137 }
139 /**
140 * Callback for child_added event.
141 */
142 static void
143 sp_feComponentTransfer_child_added(SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *ref)
144 {
145 g_warning("child_added");
146 SPFeComponentTransfer *f = SP_FECOMPONENTTRANSFER(object);
148 if (((SPObjectClass *) feComponentTransfer_parent_class)->child_added)
149 (* ((SPObjectClass *) feComponentTransfer_parent_class)->child_added)(object, child, ref);
151 sp_feComponentTransfer_children_modified(f);
152 object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
153 }
156 /**
157 * Callback for remove_child event.
158 */
159 static void
160 sp_feComponentTransfer_remove_child(SPObject *object, Inkscape::XML::Node *child)
161 {
162 SPFeComponentTransfer *f = SP_FECOMPONENTTRANSFER(object);
164 if (((SPObjectClass *) feComponentTransfer_parent_class)->remove_child)
165 (* ((SPObjectClass *) feComponentTransfer_parent_class)->remove_child)(object, child);
167 sp_feComponentTransfer_children_modified(f);
168 object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
169 }
171 /**
172 * Drops any allocated memory.
173 */
174 static void
175 sp_feComponentTransfer_release(SPObject *object)
176 {
177 if (((SPObjectClass *) feComponentTransfer_parent_class)->release)
178 ((SPObjectClass *) feComponentTransfer_parent_class)->release(object);
179 }
181 /**
182 * Sets a specific value in the SPFeComponentTransfer.
183 */
184 static void
185 sp_feComponentTransfer_set(SPObject *object, unsigned int key, gchar const *value)
186 {
187 SPFeComponentTransfer *feComponentTransfer = SP_FECOMPONENTTRANSFER(object);
188 (void)feComponentTransfer;
190 switch(key) {
191 /*DEAL WITH SETTING ATTRIBUTES HERE*/
192 default:
193 if (((SPObjectClass *) feComponentTransfer_parent_class)->set)
194 ((SPObjectClass *) feComponentTransfer_parent_class)->set(object, key, value);
195 break;
196 }
197 }
199 /**
200 * Receives update notifications.
201 */
202 static void
203 sp_feComponentTransfer_update(SPObject *object, SPCtx *ctx, guint flags)
204 {
205 if (flags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG |
206 SP_OBJECT_VIEWPORT_MODIFIED_FLAG)) {
208 /* do something to trigger redisplay, updates? */
210 }
212 if (((SPObjectClass *) feComponentTransfer_parent_class)->update) {
213 ((SPObjectClass *) feComponentTransfer_parent_class)->update(object, ctx, flags);
214 }
215 }
217 /**
218 * Writes its settings to an incoming repr object, if any.
219 */
220 static Inkscape::XML::Node *
221 sp_feComponentTransfer_write(SPObject *object, Inkscape::XML::Document *doc, Inkscape::XML::Node *repr, guint flags)
222 {
223 // Inkscape-only object, not copied during an "plain SVG" dump:
224 if (flags & SP_OBJECT_WRITE_EXT) {
225 if (repr) {
226 // is this sane?
227 //repr->mergeFrom(SP_OBJECT_REPR(object), "id");
228 } else {
229 repr = SP_OBJECT_REPR(object)->duplicate(doc);
230 }
231 }
233 if (((SPObjectClass *) feComponentTransfer_parent_class)->write) {
234 ((SPObjectClass *) feComponentTransfer_parent_class)->write(object, doc, repr, flags);
235 }
237 return repr;
238 }
240 static void sp_feComponentTransfer_build_renderer(SPFilterPrimitive *primitive, Inkscape::Filters::Filter *filter) {
241 g_assert(primitive != NULL);
242 g_assert(filter != NULL);
244 SPFeComponentTransfer *sp_componenttransfer = SP_FECOMPONENTTRANSFER(primitive);
246 int primitive_n = filter->add_primitive(Inkscape::Filters::NR_FILTER_COMPONENTTRANSFER);
247 Inkscape::Filters::FilterPrimitive *nr_primitive = filter->get_primitive(primitive_n);
248 Inkscape::Filters::FilterComponentTransfer *nr_componenttransfer = dynamic_cast<Inkscape::Filters::FilterComponentTransfer*>(nr_primitive);
249 g_assert(nr_componenttransfer != NULL);
251 sp_componenttransfer->renderer = nr_componenttransfer;
252 sp_filter_primitive_renderer_common(primitive, nr_primitive);
255 sp_feComponentTransfer_children_modified(sp_componenttransfer); //do we need it?!
256 }
258 /*
259 Local Variables:
260 mode:c++
261 c-file-style:"stroustrup"
262 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
263 indent-tabs-mode:nil
264 fill-column:99
265 End:
266 */
267 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :