1 /** \file
2 * SVG <fepointlight> implementation.
3 */
4 /*
5 * Authors:
6 * Hugo Rodrigues <haa.rodrigues@gmail.com>
7 * Niko Kiirala <niko@kiirala.com>
8 * Jean-Rene Reinhard <jr@komite.net>
9 * Abhishek Sharma
10 *
11 * Copyright (C) 2006,2007 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 <glib.h>
22 #include "attributes.h"
23 #include "document.h"
24 #include "pointlight.h"
25 #include "diffuselighting-fns.h"
26 #include "specularlighting-fns.h"
27 #include "xml/repr.h"
29 #define SP_MACROS_SILENT
30 #include "macros.h"
32 /* FePointLight class */
34 static void sp_fepointlight_class_init(SPFePointLightClass *klass);
35 static void sp_fepointlight_init(SPFePointLight *fepointlight);
37 static void sp_fepointlight_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
38 static void sp_fepointlight_release(SPObject *object);
39 static void sp_fepointlight_set(SPObject *object, unsigned int key, gchar const *value);
40 static void sp_fepointlight_update(SPObject *object, SPCtx *ctx, guint flags);
41 static Inkscape::XML::Node *sp_fepointlight_write(SPObject *object, Inkscape::XML::Document *doc, Inkscape::XML::Node *repr, guint flags);
43 static SPObjectClass *fePointLight_parent_class;
45 GType
46 sp_fepointlight_get_type()
47 {
48 static GType fepointlight_type = 0;
50 if (!fepointlight_type) {
51 GTypeInfo fepointlight_info = {
52 sizeof(SPFePointLightClass),
53 NULL, NULL,
54 (GClassInitFunc) sp_fepointlight_class_init,
55 NULL, NULL,
56 sizeof(SPFePointLight),
57 16,
58 (GInstanceInitFunc) sp_fepointlight_init,
59 NULL, /* value_table */
60 };
61 fepointlight_type = g_type_register_static(SP_TYPE_OBJECT, "SPFePointLight", &fepointlight_info, (GTypeFlags)0);
62 }
63 return fepointlight_type;
64 }
66 static void
67 sp_fepointlight_class_init(SPFePointLightClass *klass)
68 {
70 SPObjectClass *sp_object_class = (SPObjectClass *)klass;
72 fePointLight_parent_class = (SPObjectClass*)g_type_class_peek_parent(klass);
74 sp_object_class->build = sp_fepointlight_build;
75 sp_object_class->release = sp_fepointlight_release;
76 sp_object_class->write = sp_fepointlight_write;
77 sp_object_class->set = sp_fepointlight_set;
78 sp_object_class->update = sp_fepointlight_update;
79 }
81 static void
82 sp_fepointlight_init(SPFePointLight *fepointlight)
83 {
84 fepointlight->x = 0;
85 fepointlight->y = 0;
86 fepointlight->z = 0;
88 fepointlight->x_set = FALSE;
89 fepointlight->y_set = FALSE;
90 fepointlight->z_set = FALSE;
91 }
93 /**
94 * Reads the Inkscape::XML::Node, and initializes SPPointLight variables. For this to get called,
95 * our name must be associated with a repr via "sp_object_type_register". Best done through
96 * sp-object-repr.cpp's repr_name_entries array.
97 */
98 static void
99 sp_fepointlight_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
100 {
101 if (((SPObjectClass *) fePointLight_parent_class)->build) {
102 ((SPObjectClass *) fePointLight_parent_class)->build(object, document, repr);
103 }
105 //Read values of key attributes from XML nodes into object.
106 object->readAttr( "x" );
107 object->readAttr( "y" );
108 object->readAttr( "z" );
110 //is this necessary?
111 document->addResource("fepointlight", object);
112 }
114 /**
115 * Drops any allocated memory.
116 */
117 static void
118 sp_fepointlight_release(SPObject *object)
119 {
120 //SPFePointLight *fepointlight = SP_FEPOINTLIGHT(object);
122 if (SP_OBJECT_DOCUMENT(object)) {
123 /* Unregister ourselves */
124 SP_OBJECT_DOCUMENT(object)->removeResource("fepointlight", SP_OBJECT(object));
125 }
127 //TODO: release resources here
128 }
130 /**
131 * Sets a specific value in the SPFePointLight.
132 */
133 static void
134 sp_fepointlight_set(SPObject *object, unsigned int key, gchar const *value)
135 {
136 SPFePointLight *fepointlight = SP_FEPOINTLIGHT(object);
137 gchar *end_ptr;
138 switch (key) {
139 case SP_ATTR_X:
140 end_ptr = NULL;
141 if (value) {
142 fepointlight->x = g_ascii_strtod(value, &end_ptr);
143 if (end_ptr) {
144 fepointlight->x_set = TRUE;
145 }
146 }
147 if (!value || !end_ptr) {
148 fepointlight->x = 0;
149 fepointlight->x_set = FALSE;
150 }
151 if (object->parent &&
152 (SP_IS_FEDIFFUSELIGHTING(object->parent) ||
153 SP_IS_FESPECULARLIGHTING(object->parent))) {
154 object->parent->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
155 }
156 break;
157 case SP_ATTR_Y:
158 end_ptr = NULL;
159 if (value) {
160 fepointlight->y = g_ascii_strtod(value, &end_ptr);
161 if (end_ptr) {
162 fepointlight->y_set = TRUE;
163 }
164 }
165 if (!value || !end_ptr) {
166 fepointlight->y = 0;
167 fepointlight->y_set = FALSE;
168 }
169 if (object->parent &&
170 (SP_IS_FEDIFFUSELIGHTING(object->parent) ||
171 SP_IS_FESPECULARLIGHTING(object->parent))) {
172 object->parent->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
173 }
174 break;
175 case SP_ATTR_Z:
176 end_ptr = NULL;
177 if (value) {
178 fepointlight->z = g_ascii_strtod(value, &end_ptr);
179 if (end_ptr) {
180 fepointlight->z_set = TRUE;
181 }
182 }
183 if (!value || !end_ptr) {
184 fepointlight->z = 0;
185 fepointlight->z_set = FALSE;
186 }
187 if (object->parent &&
188 (SP_IS_FEDIFFUSELIGHTING(object->parent) ||
189 SP_IS_FESPECULARLIGHTING(object->parent))) {
190 object->parent->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
191 }
192 break;
193 default:
194 // See if any parents need this value.
195 if (((SPObjectClass *) fePointLight_parent_class)->set) {
196 ((SPObjectClass *) fePointLight_parent_class)->set(object, key, value);
197 }
198 break;
199 }
200 }
202 /**
203 * * Receives update notifications.
204 * */
205 static void
206 sp_fepointlight_update(SPObject *object, SPCtx *ctx, guint flags)
207 {
208 SPFePointLight *fePointLight = SP_FEPOINTLIGHT(object);
209 (void)fePointLight;
211 if (flags & SP_OBJECT_MODIFIED_FLAG) {
212 /* do something to trigger redisplay, updates? */
213 object->readAttr( "x" );
214 object->readAttr( "y" );
215 object->readAttr( "z" );
216 }
218 if (((SPObjectClass *) fePointLight_parent_class)->update) {
219 ((SPObjectClass *) fePointLight_parent_class)->update(object, ctx, flags);
220 }
221 }
223 /**
224 * Writes its settings to an incoming repr object, if any.
225 */
226 static Inkscape::XML::Node *
227 sp_fepointlight_write(SPObject *object, Inkscape::XML::Document *doc, Inkscape::XML::Node *repr, guint flags)
228 {
229 SPFePointLight *fepointlight = SP_FEPOINTLIGHT(object);
231 if (!repr) {
232 repr = SP_OBJECT_REPR(object)->duplicate(doc);
233 }
235 if (fepointlight->x_set)
236 sp_repr_set_css_double(repr, "x", fepointlight->x);
237 if (fepointlight->y_set)
238 sp_repr_set_css_double(repr, "y", fepointlight->y);
239 if (fepointlight->z_set)
240 sp_repr_set_css_double(repr, "z", fepointlight->z);
242 if (((SPObjectClass *) fePointLight_parent_class)->write) {
243 ((SPObjectClass *) fePointLight_parent_class)->write(object, doc, repr, flags);
244 }
246 return repr;
247 }
249 /*
250 Local Variables:
251 mode:c++
252 c-file-style:"stroustrup"
253 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
254 indent-tabs-mode:nil
255 fill-column:99
256 End:
257 */
258 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :