1 /*
2 * The reference corresponding to the inkscape:perspectiveID attribute
3 *
4 * Copyright (C) 2007 Johan Engelen
5 * Copyright (C) 2007 Maximilian Albert
6 *
7 * Released under GNU GPL, read the file 'COPYING' for more information.
8 */
10 #include "persp3d-reference.h"
11 #include "persp3d.h"
12 #include "uri.h"
14 // for testing:
15 #include "xml/repr.h"
16 #include "box3d.h"
18 static void persp3dreference_href_changed(SPObject *old_ref, SPObject *ref, Persp3DReference *persp3dref);
19 static void persp3dreference_delete_self(SPObject *deleted, Persp3DReference *persp3dref);
20 static void persp3dreference_source_modified(SPObject *iSource, guint flags, Persp3DReference *persp3dref);
22 Persp3DReference::Persp3DReference(SPObject* i_owner) : URIReference(i_owner)
23 {
24 owner=i_owner;
25 /**
26 if (owner) {
27 g_print ("Owner of newly created Persp3DReference is box #%d ", SP_BOX3D(owner)->my_counter);
28 g_print ("(no ID yet because we are calling from box3d_init()...\n");
29 }
30 **/
31 persp_href = NULL;
32 persp_repr = NULL;
33 persp = NULL;
34 _changed_connection = changedSignal().connect(sigc::bind(sigc::ptr_fun(persp3dreference_href_changed), this)); // listening to myself, this should be virtual instead
35 }
37 Persp3DReference::~Persp3DReference(void)
38 {
39 _changed_connection.disconnect(); // to do before unlinking
41 quit_listening();
42 unlink();
43 }
45 bool
46 Persp3DReference::_acceptObject(SPObject *obj) const
47 {
48 return SP_IS_PERSP3D(obj);
49 /* effic: Don't bother making this an inline function: _acceptObject is a virtual function,
50 typically called from a context where the runtime type is not known at compile time. */
51 }
53 /***
54 void
55 Persp3DReference::link(char *to)
56 {
57 if ( to == NULL ) {
58 quit_listening();
59 unlink();
60 } else {
61 if ( !persp_href || ( strcmp(to, persp_href) != 0 ) ) {
62 g_free(persp_href);
63 persp_href = g_strdup(to);
64 try {
65 attach(Inkscape::URI(to));
66 } catch (Inkscape::BadURIException &e) {
67 // TODO: Proper error handling as per
68 // http://www.w3.org/TR/SVG11/implnote.html#ErrorProcessing.
69 //
70 g_warning("%s", e.what());
71 detach();
72 }
73 }
74 }
75 }
76 ***/
78 void
79 Persp3DReference::unlink(void)
80 {
81 g_free(persp_href);
82 persp_href = NULL;
83 detach();
84 }
86 void
87 Persp3DReference::start_listening(Persp3D* to)
88 {
89 if ( to == NULL ) {
90 return;
91 }
92 persp = to;
93 persp_repr = SP_OBJECT_REPR(to);
94 _delete_connection = to->connectDelete(sigc::bind(sigc::ptr_fun(&persp3dreference_delete_self), this));
95 _modified_connection = to->connectModified(sigc::bind<2>(sigc::ptr_fun(&persp3dreference_source_modified), this));
96 //box3d_start_listening_to_persp_change (SP_BOX3D(this->owner), to);
97 }
99 void
100 Persp3DReference::quit_listening(void)
101 {
102 if ( persp == NULL ) {
103 return;
104 }
105 _modified_connection.disconnect();
106 _delete_connection.disconnect();
107 persp_repr = NULL;
108 persp = NULL;
109 }
111 static void
112 persp3dreference_href_changed(SPObject */*old_ref*/, SPObject */*ref*/, Persp3DReference *persp3dref)
113 {
114 //g_print ("persp3dreference_href_changed:\n");
115 persp3dref->quit_listening();
116 /**
117 if (SP_IS_PERSP3D(persp3dref->getObject())){
118 g_print ("referenced object is a perspective\n");
119 } else {
120 g_print ("referenced object is NOT a perspective!!!!\n");
121 }
122 **/
123 Persp3D *refobj = SP_PERSP3D(persp3dref->getObject());
124 if ( refobj ) {
125 persp3dref->start_listening(refobj);
126 //g_print (" start listening to %s\n", SP_OBJECT_REPR(refobj)->attribute("id"));
127 }
129 /**
130 if (persp3dref->owner) {
131 g_print ("Requesting display update of owner box #%d (%s) from persp3dreference_href_changed()\n",
132 SP_BOX3D(persp3dref->owner)->my_counter,
133 SP_OBJECT_REPR(persp3dref->owner)->attribute("id"));
134 }
135 **/
136 persp3dref->owner->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
137 }
139 static void
140 persp3dreference_delete_self(SPObject */*deleted*/, Persp3DReference *persp3dref)
141 {
142 g_print ("persp3dreference_delete_self; FIXME: Can we leave this to the parent URIReference?\n");
143 if (persp3dref->owner) {
144 g_print ("Deleting box #%d (%s) (?) from Persp3DReference\n",
145 SP_BOX3D(persp3dref->owner)->my_counter,
146 SP_OBJECT_REPR(persp3dref->owner)->attribute("id"));
147 }
148 persp3dref->owner->deleteObject();
149 }
151 static void
152 persp3dreference_source_modified(SPObject */*iSource*/, guint /*flags*/, Persp3DReference *persp3dref)
153 {
154 /**
155 g_print ("persp3dreference_source_modified; FIXME: Can we leave this to the parent URIReference?\n");
156 if (persp3dref->owner) {
157 g_print ("Requesting display update of box #%d (%s) from persp3dreference_source_modified\n",
158 SP_BOX3D(persp3dref->owner)->my_counter,
159 SP_OBJECT_REPR(persp3dref->owner)->attribute("id"));
160 }
161 **/
162 persp3dref->owner->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
163 }
166 /*
167 Local Variables:
168 mode:c++
169 c-file-style:"stroustrup"
170 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
171 indent-tabs-mode:nil
172 fill-column:99
173 End:
174 */
175 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :