27e63eaa608c74363cc34a4e245b17b612a5668e
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 SPFeComponentTransfer *f = SP_FECOMPONENTTRANSFER(object);
147 if (((SPObjectClass *) feComponentTransfer_parent_class)->child_added)
148 (* ((SPObjectClass *) feComponentTransfer_parent_class)->child_added)(object, child, ref);
150 sp_feComponentTransfer_children_modified(f);
151 object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
152 }
155 /**
156 * Callback for remove_child event.
157 */
158 static void
159 sp_feComponentTransfer_remove_child(SPObject *object, Inkscape::XML::Node *child)
160 {
161 SPFeComponentTransfer *f = SP_FECOMPONENTTRANSFER(object);
163 if (((SPObjectClass *) feComponentTransfer_parent_class)->remove_child)
164 (* ((SPObjectClass *) feComponentTransfer_parent_class)->remove_child)(object, child);
166 sp_feComponentTransfer_children_modified(f);
167 object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
168 }
170 /**
171 * Drops any allocated memory.
172 */
173 static void
174 sp_feComponentTransfer_release(SPObject *object)
175 {
176 if (((SPObjectClass *) feComponentTransfer_parent_class)->release)
177 ((SPObjectClass *) feComponentTransfer_parent_class)->release(object);
178 }
180 /**
181 * Sets a specific value in the SPFeComponentTransfer.
182 */
183 static void
184 sp_feComponentTransfer_set(SPObject *object, unsigned int key, gchar const *value)
185 {
186 SPFeComponentTransfer *feComponentTransfer = SP_FECOMPONENTTRANSFER(object);
187 (void)feComponentTransfer;
189 switch(key) {
190 /*DEAL WITH SETTING ATTRIBUTES HERE*/
191 default:
192 if (((SPObjectClass *) feComponentTransfer_parent_class)->set)
193 ((SPObjectClass *) feComponentTransfer_parent_class)->set(object, key, value);
194 break;
195 }
196 }
198 /**
199 * Receives update notifications.
200 */
201 static void
202 sp_feComponentTransfer_update(SPObject *object, SPCtx *ctx, guint flags)
203 {
204 if (flags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG |
205 SP_OBJECT_VIEWPORT_MODIFIED_FLAG)) {
207 /* do something to trigger redisplay, updates? */
209 }
211 if (((SPObjectClass *) feComponentTransfer_parent_class)->update) {
212 ((SPObjectClass *) feComponentTransfer_parent_class)->update(object, ctx, flags);
213 }
214 }
216 /**
217 * Writes its settings to an incoming repr object, if any.
218 */
219 static Inkscape::XML::Node *
220 sp_feComponentTransfer_write(SPObject *object, Inkscape::XML::Document *doc, Inkscape::XML::Node *repr, guint flags)
221 {
222 /* TODO: Don't just clone, but create a new repr node and write all
223 * relevant values into it */
224 if (!repr) {
225 repr = SP_OBJECT_REPR(object)->duplicate(doc);
226 }
228 if (((SPObjectClass *) feComponentTransfer_parent_class)->write) {
229 ((SPObjectClass *) feComponentTransfer_parent_class)->write(object, doc, repr, flags);
230 }
232 return repr;
233 }
235 static void sp_feComponentTransfer_build_renderer(SPFilterPrimitive *primitive, Inkscape::Filters::Filter *filter) {
236 g_assert(primitive != NULL);
237 g_assert(filter != NULL);
239 SPFeComponentTransfer *sp_componenttransfer = SP_FECOMPONENTTRANSFER(primitive);
241 int primitive_n = filter->add_primitive(Inkscape::Filters::NR_FILTER_COMPONENTTRANSFER);
242 Inkscape::Filters::FilterPrimitive *nr_primitive = filter->get_primitive(primitive_n);
243 Inkscape::Filters::FilterComponentTransfer *nr_componenttransfer = dynamic_cast<Inkscape::Filters::FilterComponentTransfer*>(nr_primitive);
244 g_assert(nr_componenttransfer != NULL);
246 sp_componenttransfer->renderer = nr_componenttransfer;
247 sp_filter_primitive_renderer_common(primitive, nr_primitive);
250 sp_feComponentTransfer_children_modified(sp_componenttransfer); //do we need it?!
251 }
253 /*
254 Local Variables:
255 mode:c++
256 c-file-style:"stroustrup"
257 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
258 indent-tabs-mode:nil
259 fill-column:99
260 End:
261 */
262 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :