543c16e8b03834536dabee69118a449baaefad58
1 #define __SP_FEDIFFUSELIGHTING_CPP__
3 /** \file
4 * SVG <feDiffuseLighting> implementation.
5 *
6 */
7 /*
8 * Authors:
9 * hugo Rodrigues <haa.rodrigues@gmail.com>
10 * Jean-Rene Reinhard <jr@komite.net>
11 *
12 * Copyright (C) 2006 Hugo Rodrigues
13 * 2007 authors
14 *
15 * Released under GNU GPL, read the file 'COPYING' for more information
16 */
18 #ifdef HAVE_CONFIG_H
19 # include "config.h"
20 #endif
22 #include "attributes.h"
23 #include "svg/svg.h"
24 #include "sp-object.h"
25 #include "svg/svg-color.h"
26 #include "sp-fediffuselighting.h"
27 #include "xml/repr.h"
28 #include "display/nr-filter-diffuselighting.h"
30 /* FeDiffuseLighting base class */
32 static void sp_feDiffuseLighting_class_init(SPFeDiffuseLightingClass *klass);
33 static void sp_feDiffuseLighting_init(SPFeDiffuseLighting *feDiffuseLighting);
35 static void sp_feDiffuseLighting_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
36 static void sp_feDiffuseLighting_release(SPObject *object);
37 static void sp_feDiffuseLighting_set(SPObject *object, unsigned int key, gchar const *value);
38 static void sp_feDiffuseLighting_update(SPObject *object, SPCtx *ctx, guint flags);
39 //we assume that svg:feDiffuseLighting can have any number of children
40 //only the first one is considered as the light source of the filter
41 //TODO is that right?
42 //if not modify child_added and remove_child to raise errors
43 static void sp_feDiffuseLighting_child_added(SPObject *object,
44 Inkscape::XML::Node *child,
45 Inkscape::XML::Node *ref);
46 static void sp_feDiffuseLighting_remove_child(SPObject *object, Inkscape::XML::Node *child);
47 static void sp_feDiffuseLighting_order_changed(SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *old_ref, Inkscape::XML::Node *new_ref);
48 static Inkscape::XML::Node *sp_feDiffuseLighting_write(SPObject *object, Inkscape::XML::Node *repr, guint flags);
49 static void sp_feDiffuseLighting_build_renderer(SPFilterPrimitive *primitive, NR::Filter *filter);
50 static void sp_feDiffuseLighting_children_modified(SPFeDiffuseLighting *sp_diffuselighting);
52 static SPFilterPrimitiveClass *feDiffuseLighting_parent_class;
54 GType
55 sp_feDiffuseLighting_get_type()
56 {
57 static GType feDiffuseLighting_type = 0;
59 if (!feDiffuseLighting_type) {
60 GTypeInfo feDiffuseLighting_info = {
61 sizeof(SPFeDiffuseLightingClass),
62 NULL, NULL,
63 (GClassInitFunc) sp_feDiffuseLighting_class_init,
64 NULL, NULL,
65 sizeof(SPFeDiffuseLighting),
66 16,
67 (GInstanceInitFunc) sp_feDiffuseLighting_init,
68 NULL, /* value_table */
69 };
70 feDiffuseLighting_type = g_type_register_static(SP_TYPE_FILTER_PRIMITIVE, "SPFeDiffuseLighting", &feDiffuseLighting_info, (GTypeFlags)0);
71 }
72 return feDiffuseLighting_type;
73 }
75 static void
76 sp_feDiffuseLighting_class_init(SPFeDiffuseLightingClass *klass)
77 {
78 SPObjectClass *sp_object_class = (SPObjectClass *)klass;
79 SPFilterPrimitiveClass *sp_primitive_class = (SPFilterPrimitiveClass *)klass;
80 feDiffuseLighting_parent_class = (SPFilterPrimitiveClass*)g_type_class_peek_parent(klass);
82 sp_object_class->build = sp_feDiffuseLighting_build;
83 sp_object_class->release = sp_feDiffuseLighting_release;
84 sp_object_class->write = sp_feDiffuseLighting_write;
85 sp_object_class->set = sp_feDiffuseLighting_set;
86 sp_object_class->update = sp_feDiffuseLighting_update;
87 sp_object_class->child_added = sp_feDiffuseLighting_child_added;
88 sp_object_class->remove_child = sp_feDiffuseLighting_remove_child;
89 sp_object_class->order_changed = sp_feDiffuseLighting_order_changed;
91 sp_primitive_class->build_renderer = sp_feDiffuseLighting_build_renderer;
92 }
94 static void
95 sp_feDiffuseLighting_init(SPFeDiffuseLighting *feDiffuseLighting)
96 {
97 feDiffuseLighting->surfaceScale = 1;
98 feDiffuseLighting->diffuseConstant = 1;
99 feDiffuseLighting->lighting_color = 0xffffffff;
100 //TODO kernelUnit
101 feDiffuseLighting->renderer = NULL;
102 }
104 /**
105 * Reads the Inkscape::XML::Node, and initializes SPFeDiffuseLighting variables. For this to get called,
106 * our name must be associated with a repr via "sp_object_type_register". Best done through
107 * sp-object-repr.cpp's repr_name_entries array.
108 */
109 static void
110 sp_feDiffuseLighting_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
111 {
112 if (((SPObjectClass *) feDiffuseLighting_parent_class)->build) {
113 ((SPObjectClass *) feDiffuseLighting_parent_class)->build(object, document, repr);
114 }
116 /*LOAD ATTRIBUTES FROM REPR HERE*/
117 sp_object_read_attr(object, "surfaceScale");
118 sp_object_read_attr(object, "diffuseConstant");
119 sp_object_read_attr(object, "kernelUnitLength");
120 sp_object_read_attr(object, "lighting-color");
122 }
124 /**
125 * Drops any allocated memory.
126 */
127 static void
128 sp_feDiffuseLighting_release(SPObject *object)
129 {
130 if (((SPObjectClass *) feDiffuseLighting_parent_class)->release)
131 ((SPObjectClass *) feDiffuseLighting_parent_class)->release(object);
132 }
134 /**
135 * Sets a specific value in the SPFeDiffuseLighting.
136 */
137 static void
138 sp_feDiffuseLighting_set(SPObject *object, unsigned int key, gchar const *value)
139 {
140 SPFeDiffuseLighting *feDiffuseLighting = SP_FEDIFFUSELIGHTING(object);
142 switch(key) {
143 /*DEAL WITH SETTING ATTRIBUTES HERE*/
144 //TODO test forbidden values
145 case SP_ATTR_SURFACESCALE:
146 feDiffuseLighting->surfaceScale = g_ascii_strtod(value, NULL);
147 if (feDiffuseLighting->renderer) {
148 feDiffuseLighting->renderer->surfaceScale = feDiffuseLighting->surfaceScale;
149 }
150 object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
151 break;
152 case SP_ATTR_DIFFUSECONSTANT:
153 feDiffuseLighting->diffuseConstant = g_ascii_strtod(value, NULL);
154 if (feDiffuseLighting->renderer) {
155 feDiffuseLighting->renderer->diffuseConstant = feDiffuseLighting->diffuseConstant;
156 }
157 object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
158 break;
159 case SP_ATTR_KERNELUNITLENGTH:
160 //TODO kernelUnit
161 //feDiffuseLighting->kernelUnitLength.set(value);
162 /*TODOif (feDiffuseLighting->renderer) {
163 feDiffuseLighting->renderer->surfaceScale = feDiffuseLighting->renderer;
164 }
165 */
166 object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
167 break;
168 case SP_PROP_LIGHTING_COLOR:
169 feDiffuseLighting->lighting_color = sp_svg_read_color(value, 0xffffffff);
170 if (feDiffuseLighting->renderer) {
171 feDiffuseLighting->renderer->lighting_color = feDiffuseLighting->lighting_color;
172 }
173 object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
174 break;
175 default:
176 if (((SPObjectClass *) feDiffuseLighting_parent_class)->set)
177 ((SPObjectClass *) feDiffuseLighting_parent_class)->set(object, key, value);
178 break;
179 }
181 }
183 /**
184 * Receives update notifications.
185 */
186 static void
187 sp_feDiffuseLighting_update(SPObject *object, SPCtx *ctx, guint flags)
188 {
189 if (flags & (SP_OBJECT_MODIFIED_FLAG)) {
190 sp_object_read_attr(object, "surfaceScale");
191 sp_object_read_attr(object, "diffuseConstant");
192 sp_object_read_attr(object, "kernelUnit");
193 sp_object_read_attr(object, "lighting-color");
194 }
196 if (((SPObjectClass *) feDiffuseLighting_parent_class)->update) {
197 ((SPObjectClass *) feDiffuseLighting_parent_class)->update(object, ctx, flags);
198 }
199 }
201 /**
202 * Writes its settings to an incoming repr object, if any.
203 */
204 static Inkscape::XML::Node *
205 sp_feDiffuseLighting_write(SPObject *object, Inkscape::XML::Node *repr, guint flags)
206 {
207 SPFeDiffuseLighting *fediffuselighting = SP_FEDIFFUSELIGHTING(object);
209 // Inkscape-only object, not copied during an "plain SVG" dump:
210 if (flags & SP_OBJECT_WRITE_EXT) {
211 if (repr) {
212 // is this sane?
213 //repr->mergeFrom(SP_OBJECT_REPR(object), "id");
214 } else {
215 repr = SP_OBJECT_REPR(object)->duplicate(NULL); // FIXME
216 }
217 }
219 sp_repr_set_css_double(repr, "surfaceScale", fediffuselighting->surfaceScale);
220 sp_repr_set_css_double(repr, "diffuseConstant", fediffuselighting->diffuseConstant);
221 /*TODO kernelUnits */
222 gchar c[64];
223 sp_svg_write_color(c, 64, fediffuselighting->lighting_color);
224 repr->setAttribute("lighting-color", c);
225 if (((SPObjectClass *) feDiffuseLighting_parent_class)->write) {
226 ((SPObjectClass *) feDiffuseLighting_parent_class)->write(object, repr, flags);
227 }
229 return repr;
230 }
232 /**
233 * Callback for child_added event.
234 */
235 static void
236 sp_feDiffuseLighting_child_added(SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *ref)
237 {
238 SPFeDiffuseLighting *f = SP_FEDIFFUSELIGHTING(object);
240 if (((SPObjectClass *) feDiffuseLighting_parent_class)->child_added)
241 (* ((SPObjectClass *) feDiffuseLighting_parent_class)->child_added)(object, child, ref);
243 sp_feDiffuseLighting_children_modified(f);
244 object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
245 }
248 /**
249 * Callback for remove_child event.
250 */
251 static void
252 sp_feDiffuseLighting_remove_child(SPObject *object, Inkscape::XML::Node *child)
253 {
254 SPFeDiffuseLighting *f = SP_FEDIFFUSELIGHTING(object);
256 if (((SPObjectClass *) feDiffuseLighting_parent_class)->remove_child)
257 (* ((SPObjectClass *) feDiffuseLighting_parent_class)->remove_child)(object, child);
259 sp_feDiffuseLighting_children_modified(f);
260 object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
261 }
263 static void
264 sp_feDiffuseLighting_order_changed (SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *old_ref, Inkscape::XML::Node *new_ref)
265 {
266 SPFeDiffuseLighting *f = SP_FEDIFFUSELIGHTING(object);
267 if (((SPObjectClass *) (feDiffuseLighting_parent_class))->order_changed)
268 (* ((SPObjectClass *) (feDiffuseLighting_parent_class))->order_changed) (object, child, old_ref, new_ref);
270 sp_feDiffuseLighting_children_modified(f);
271 object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
272 }
274 static void sp_feDiffuseLighting_children_modified(SPFeDiffuseLighting *sp_diffuselighting)
275 {
276 if (sp_diffuselighting->renderer) {
277 sp_diffuselighting->renderer->light_type = NR::NO_LIGHT;
278 if (SP_IS_FEDISTANTLIGHT(sp_diffuselighting->children)) {
279 sp_diffuselighting->renderer->light_type = NR::DISTANT_LIGHT;
280 sp_diffuselighting->renderer->light.distant = SP_FEDISTANTLIGHT(sp_diffuselighting->children);
281 }
282 if (SP_IS_FEPOINTLIGHT(sp_diffuselighting->children)) {
283 sp_diffuselighting->renderer->light_type = NR::POINT_LIGHT;
284 sp_diffuselighting->renderer->light.point = SP_FEPOINTLIGHT(sp_diffuselighting->children);
285 }
286 if (SP_IS_FESPOTLIGHT(sp_diffuselighting->children)) {
287 sp_diffuselighting->renderer->light_type = NR::SPOT_LIGHT;
288 sp_diffuselighting->renderer->light.spot = SP_FESPOTLIGHT(sp_diffuselighting->children);
289 }
290 }
291 }
293 static void sp_feDiffuseLighting_build_renderer(SPFilterPrimitive *primitive, NR::Filter *filter) {
294 g_assert(primitive != NULL);
295 g_assert(filter != NULL);
297 SPFeDiffuseLighting *sp_diffuselighting = SP_FEDIFFUSELIGHTING(primitive);
299 int primitive_n = filter->add_primitive(NR::NR_FILTER_DIFFUSELIGHTING);
300 NR::FilterPrimitive *nr_primitive = filter->get_primitive(primitive_n);
301 NR::FilterDiffuseLighting *nr_diffuselighting = dynamic_cast<NR::FilterDiffuseLighting*>(nr_primitive);
302 g_assert(nr_diffuselighting != NULL);
304 sp_diffuselighting->renderer = nr_diffuselighting;
305 sp_filter_primitive_renderer_common(primitive, nr_primitive);
307 nr_diffuselighting->diffuseConstant = sp_diffuselighting->diffuseConstant;
308 nr_diffuselighting->surfaceScale = sp_diffuselighting->surfaceScale;
309 nr_diffuselighting->lighting_color = sp_diffuselighting->lighting_color;
310 //We assume there is at most one child
311 nr_diffuselighting->light_type = NR::NO_LIGHT;
312 if (SP_IS_FEDISTANTLIGHT(primitive->children)) {
313 nr_diffuselighting->light_type = NR::DISTANT_LIGHT;
314 nr_diffuselighting->light.distant = SP_FEDISTANTLIGHT(primitive->children);
315 }
316 if (SP_IS_FEPOINTLIGHT(primitive->children)) {
317 nr_diffuselighting->light_type = NR::POINT_LIGHT;
318 nr_diffuselighting->light.point = SP_FEPOINTLIGHT(primitive->children);
319 }
320 if (SP_IS_FESPOTLIGHT(primitive->children)) {
321 nr_diffuselighting->light_type = NR::SPOT_LIGHT;
322 nr_diffuselighting->light.spot = SP_FESPOTLIGHT(primitive->children);
323 }
325 //nr_offset->set_dx(sp_offset->dx);
326 //nr_offset->set_dy(sp_offset->dy);
327 }
330 /*
331 Local Variables:
332 mode:c++
333 c-file-style:"stroustrup"
334 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
335 indent-tabs-mode:nil
336 fill-column:99
337 End:
338 */
339 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :