1 /*
2 * Copyright (C) Johan Engelen 2007-2008 <j.b.c.engelen@utwente.nl>
3 * Abhishek Sharma
4 *
5 * Released under GNU GPL, read the file 'COPYING' for more information
6 */
8 #include "live_effects/lpeobject.h"
10 #include "live_effects/effect.h"
12 #include "xml/repr.h"
13 #include "xml/node-event-vector.h"
14 #include "sp-object.h"
15 #include "attributes.h"
16 #include "document.h"
17 #include "document-private.h"
19 #include <glibmm/i18n.h>
21 //#define LIVEPATHEFFECT_VERBOSE
23 static void livepatheffect_on_repr_attr_changed (Inkscape::XML::Node * repr, const gchar *key, const gchar *oldval, const gchar *newval, bool is_interactive, void * data);
25 static SPObjectClass *livepatheffect_parent_class;
26 /**
27 * Registers the LivePathEffect class with Gdk and returns its type number.
28 */
29 GType
30 LivePathEffectObject::livepatheffect_get_type ()
31 {
32 static GType livepatheffect_type = 0;
34 if (!livepatheffect_type) {
35 GTypeInfo livepatheffect_info = {
36 sizeof (LivePathEffectObjectClass),
37 NULL, NULL,
38 (GClassInitFunc) LivePathEffectObject::livepatheffect_class_init,
39 NULL, NULL,
40 sizeof (LivePathEffectObject),
41 16,
42 (GInstanceInitFunc) LivePathEffectObject::livepatheffect_init,
43 NULL,
44 };
45 livepatheffect_type = g_type_register_static (SP_TYPE_OBJECT, "LivePathEffectObject", &livepatheffect_info, (GTypeFlags)0);
46 }
47 return livepatheffect_type;
48 }
50 static Inkscape::XML::NodeEventVector const livepatheffect_repr_events = {
51 NULL, /* child_added */
52 NULL, /* child_removed */
53 livepatheffect_on_repr_attr_changed,
54 NULL, /* content_changed */
55 NULL /* order_changed */
56 };
59 /**
60 * Callback to initialize livepatheffect vtable.
61 */
62 void
63 LivePathEffectObject::livepatheffect_class_init(LivePathEffectObjectClass *klass)
64 {
65 SPObjectClass *sp_object_class = (SPObjectClass *) klass;
67 livepatheffect_parent_class = (SPObjectClass *) g_type_class_ref(SP_TYPE_OBJECT);
69 sp_object_class->build = livepatheffect_build;
70 sp_object_class->release = livepatheffect_release;
72 sp_object_class->set = livepatheffect_set;
73 sp_object_class->write = livepatheffect_write;
74 }
76 /**
77 * Callback to initialize livepatheffect object.
78 */
79 void
80 LivePathEffectObject::livepatheffect_init(LivePathEffectObject *lpeobj)
81 {
82 #ifdef LIVEPATHEFFECT_VERBOSE
83 g_message("Init livepatheffectobject");
84 #endif
85 lpeobj->effecttype = Inkscape::LivePathEffect::INVALID_LPE;
86 lpeobj->lpe = NULL;
88 lpeobj->effecttype_set = false;
89 }
91 /**
92 * Virtual build: set livepatheffect attributes from its associated XML node.
93 */
94 void
95 LivePathEffectObject::livepatheffect_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
96 {
97 #ifdef LIVEPATHEFFECT_VERBOSE
98 g_message("Build livepatheffect");
99 #endif
100 g_assert(object != NULL);
101 g_assert(SP_IS_OBJECT(object));
103 if (((SPObjectClass *) livepatheffect_parent_class)->build)
104 (* ((SPObjectClass *) livepatheffect_parent_class)->build)(object, document, repr);
106 object->readAttr( "effect" );
108 if (repr) {
109 repr->addListener (&livepatheffect_repr_events, object);
110 }
112 /* Register ourselves, is this necessary? */
113 // document->addResource("path-effect", object);
114 }
116 /**
117 * Virtual release of livepatheffect members before destruction.
118 */
119 void
120 LivePathEffectObject::livepatheffect_release(SPObject *object)
121 {
122 #ifdef LIVEPATHEFFECT_VERBOSE
123 g_print("Releasing livepatheffect");
124 #endif
126 LivePathEffectObject *lpeobj = LIVEPATHEFFECT(object);
128 SP_OBJECT_REPR(object)->removeListenerByData(object);
131 /*
132 if (SP_OBJECT_DOCUMENT(object)) {
133 // Unregister ourselves
134 sp_document_removeResource(SP_OBJECT_DOCUMENT(object), "livepatheffect", SP_OBJECT(object));
135 }
137 if (gradient->ref) {
138 gradient->modified_connection.disconnect();
139 gradient->ref->detach();
140 delete gradient->ref;
141 gradient->ref = NULL;
142 }
144 gradient->modified_connection.~connection();
146 */
148 if (lpeobj->lpe) {
149 delete lpeobj->lpe;
150 lpeobj->lpe = NULL;
151 }
152 lpeobj->effecttype = Inkscape::LivePathEffect::INVALID_LPE;
154 if (((SPObjectClass *) livepatheffect_parent_class)->release)
155 ((SPObjectClass *) livepatheffect_parent_class)->release(object);
156 }
158 /**
159 * Virtual set: set attribute to value.
160 */
161 void
162 LivePathEffectObject::livepatheffect_set(SPObject *object, unsigned key, gchar const *value)
163 {
164 LivePathEffectObject *lpeobj = LIVEPATHEFFECT(object);
165 #ifdef LIVEPATHEFFECT_VERBOSE
166 g_print("Set livepatheffect");
167 #endif
168 switch (key) {
169 case SP_PROP_PATH_EFFECT:
170 if (lpeobj->lpe) {
171 delete lpeobj->lpe;
172 lpeobj->lpe = NULL;
173 }
175 if ( value && Inkscape::LivePathEffect::LPETypeConverter.is_valid_key(value) ) {
176 lpeobj->effecttype = Inkscape::LivePathEffect::LPETypeConverter.get_id_from_key(value);
177 lpeobj->lpe = Inkscape::LivePathEffect::Effect::New(lpeobj->effecttype, lpeobj);
178 lpeobj->effecttype_set = true;
179 } else {
180 lpeobj->effecttype = Inkscape::LivePathEffect::INVALID_LPE;
181 lpeobj->effecttype_set = false;
182 }
183 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
184 break;
185 }
187 if (((SPObjectClass *) livepatheffect_parent_class)->set) {
188 ((SPObjectClass *) livepatheffect_parent_class)->set(object, key, value);
189 }
190 }
192 /**
193 * Virtual write: write object attributes to repr.
194 */
195 Inkscape::XML::Node *
196 LivePathEffectObject::livepatheffect_write(SPObject *object, Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, guint flags)
197 {
198 #ifdef LIVEPATHEFFECT_VERBOSE
199 g_print("Write livepatheffect");
200 #endif
202 LivePathEffectObject *lpeobj = LIVEPATHEFFECT(object);
204 if ((flags & SP_OBJECT_WRITE_BUILD) && !repr) {
205 repr = xml_doc->createElement("inkscape:path-effect");
206 }
208 if ((flags & SP_OBJECT_WRITE_ALL) || lpeobj->lpe) {
209 repr->setAttribute("effect", Inkscape::LivePathEffect::LPETypeConverter.get_key(lpeobj->effecttype).c_str());
211 lpeobj->lpe->writeParamsToSVG();
212 }
214 if (((SPObjectClass *) livepatheffect_parent_class)->write)
215 (* ((SPObjectClass *) livepatheffect_parent_class)->write)(object, xml_doc, repr, flags);
217 return repr;
218 }
220 static void
221 livepatheffect_on_repr_attr_changed ( Inkscape::XML::Node * /*repr*/,
222 const gchar *key,
223 const gchar */*oldval*/,
224 const gchar *newval,
225 bool /*is_interactive*/,
226 void * data )
227 {
228 #ifdef LIVEPATHEFFECT_VERBOSE
229 g_print("livepatheffect_on_repr_attr_changed");
230 #endif
232 if (!data)
233 return;
235 LivePathEffectObject *lpeobj = (LivePathEffectObject*) data;
236 if (!lpeobj->get_lpe())
237 return;
239 lpeobj->get_lpe()->setParameter(key, newval);
241 lpeobj->requestModified(SP_OBJECT_MODIFIED_FLAG);
242 }
244 /**
245 * If this has other users, create a new private duplicate and return it
246 * returns 'this' when no forking was necessary (and therefore no duplicate was made)
247 * Check out sp_lpe_item_fork_path_effects_if_necessary !
248 */
249 LivePathEffectObject *LivePathEffectObject::fork_private_if_necessary(unsigned int nr_of_allowed_users)
250 {
251 if (hrefcount > nr_of_allowed_users) {
252 SPDocument *doc = SP_OBJECT_DOCUMENT(this);
253 Inkscape::XML::Document *xml_doc = doc->getReprDoc();
254 Inkscape::XML::Node *dup_repr = SP_OBJECT_REPR (this)->duplicate(xml_doc);
256 SP_OBJECT_REPR (SP_DOCUMENT_DEFS (doc))->addChild(dup_repr, NULL);
257 LivePathEffectObject *lpeobj_new = LIVEPATHEFFECT( doc->getObjectByRepr(dup_repr) );
259 Inkscape::GC::release(dup_repr);
260 return lpeobj_new;
261 }
262 return this;
263 }
265 /*
266 Local Variables:
267 mode:c++
268 c-file-style:"stroustrup"
269 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
270 indent-tabs-mode:nil
271 fill-column:99
272 End:
273 */
274 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :