1 /*
2 * Inkscape::LayerManager - a view of a document's layers, relative
3 * to a particular desktop
4 *
5 * Copyright 2006 MenTaLguY <mental@rydia.net>
6 *
7 * Released under GNU GPL, read the file 'COPYING' for more information
8 */
10 #include <set>
11 #include <sigc++/functors/mem_fun.h>
12 #include <sigc++/adaptors/hide.h>
13 #include "gc-managed.h"
14 #include "gc-finalized.h"
15 #include "document.h"
16 #include "desktop.h"
17 #include "desktop-handles.h"
18 #include "layer-manager.h"
19 #include "prefs-utils.h"
20 #include "ui/view/view.h"
21 #include "selection.h"
22 #include "sp-object.h"
23 #include "xml/node.h"
24 #include "xml/node-observer.h"
26 namespace Inkscape {
29 using Inkscape::XML::Node;
31 class LayerManager::LayerWatcher : public Inkscape::XML::NodeObserver {
32 public:
33 LayerWatcher(LayerManager* mgr, SPObject* obj, sigc::connection c) :
34 _mgr(mgr),
35 _obj(obj),
36 _connection(c),
37 _lockedAttr(g_quark_from_string("sodipodi:insensitive")),
38 _labelAttr(g_quark_from_string("inkscape:label"))
39 {}
41 virtual void notifyChildAdded( Node &node, Node &child, Node *prev ) {}
42 virtual void notifyChildRemoved( Node &node, Node &child, Node *prev ) {}
43 virtual void notifyChildOrderChanged( Node &node, Node &child, Node *old_prev, Node *new_prev ) {}
44 virtual void notifyContentChanged( Node &node, Util::ptr_shared<char> old_content, Util::ptr_shared<char> new_content ) {}
45 virtual void notifyAttributeChanged( Node &node, GQuark name, Util::ptr_shared<char> old_value, Util::ptr_shared<char> new_value ) {
46 if ( name == _lockedAttr || name == _labelAttr ) {
47 if ( _mgr && _obj ) {
48 _mgr->_objectModified( _obj, 0 );
49 }
50 }
51 }
53 LayerManager* _mgr;
54 SPObject* _obj;
55 sigc::connection _connection;
56 GQuark _lockedAttr;
57 GQuark _labelAttr;
58 };
61 LayerManager::LayerManager(SPDesktop *desktop)
62 : _desktop(desktop), _document(NULL)
63 {
64 _layer_connection = desktop->connectCurrentLayerChanged( sigc::mem_fun(*this, &LayerManager::_selectedLayerChanged) );
66 sigc::bound_mem_functor1<void, Inkscape::LayerManager, SPDocument*> first = sigc::mem_fun(*this, &LayerManager::_setDocument);
68 // This next line has problems on gcc 4.0.2
69 sigc::slot<void, SPDocument*> base2 = first;
71 sigc::slot<void,SPDesktop*,SPDocument*> slot2 = sigc::hide<0>( base2 );
72 _document_connection = desktop->connectDocumentReplaced( slot2 );
74 _setDocument(desktop->doc());
75 }
78 void LayerManager::setCurrentLayer( SPObject* obj )
79 {
80 //g_return_if_fail( _desktop->currentRoot() );
81 if ( _desktop->currentRoot() ) {
82 _desktop->setCurrentLayer( obj );
84 if ( prefs_get_int_attribute_limited("options.selection", "layerdeselect", 1, 0, 1) ) {
85 sp_desktop_selection( _desktop )->clear();
86 }
87 }
88 }
90 void LayerManager::renameLayer( SPObject* obj, gchar const *label )
91 {
92 Glib::ustring incoming( label ? label : "" );
93 Glib::ustring result(incoming);
94 Glib::ustring base(incoming);
95 guint startNum = 1;
97 Glib::ustring::size_type pos = base.rfind('#');
98 if ( pos != Glib::ustring::npos ) {
99 gchar* numpart = g_strdup(base.substr(pos+1).c_str());
100 if ( numpart ) {
101 gchar* endPtr = 0;
102 guint64 val = g_ascii_strtoull( numpart, &endPtr, 10);
103 if ( ((val > 0) || (endPtr != numpart)) && (val < 65536) ) {
104 base.erase( pos );
105 result = base;
106 startNum = static_cast<int>(val);
107 }
108 g_free(numpart);
109 }
110 }
112 std::set<Glib::ustring> currentNames;
113 GSList const *layers=sp_document_get_resource_list(_document, "layer");
114 SPObject *root=_desktop->currentRoot();
115 if ( root ) {
116 for ( GSList const *iter=layers ; iter ; iter = iter->next ) {
117 SPObject *layer=static_cast<SPObject *>(iter->data);
118 if ( layer != obj ) {
119 currentNames.insert( layer->label() ? Glib::ustring(layer->label()) : Glib::ustring() );
120 }
121 }
122 }
124 // Not sure if we need to cap it, but we'll just be paranoid for the moment
125 // Intentionally unsigned
126 guint endNum = startNum + 3000;
127 for ( guint i = startNum; (i < endNum) && (currentNames.find(result) != currentNames.end()); i++ ) {
128 gchar* suffix = g_strdup_printf("#%d", i);
129 result = base;
130 result += suffix;
132 g_free(suffix);
133 }
135 obj->setLabel( result.c_str() );
136 }
140 void LayerManager::_setDocument(SPDocument *document) {
141 if (_document) {
142 _resource_connection.disconnect();
143 }
144 _document = document;
145 if (document) {
146 _resource_connection = sp_document_resources_changed_connect(document, "layer", sigc::mem_fun(*this, &LayerManager::_rebuild));
147 }
148 _rebuild();
149 }
151 void LayerManager::_objectModified( SPObject* obj, guint flags )
152 {
153 _details_changed_signal.emit( obj );
154 }
156 void LayerManager::_rebuild() {
157 while ( !_watchers.empty() ) {
158 LayerWatcher* one = _watchers.back();
159 _watchers.pop_back();
160 if ( one->_obj ) {
161 Node* node = SP_OBJECT_REPR(one->_obj);
162 if ( node ) {
163 node->removeObserver(*one);
164 }
165 one->_connection.disconnect();
166 }
167 }
169 _clear();
171 GSList const *layers=sp_document_get_resource_list(_document, "layer");
172 SPObject *root=_desktop->currentRoot();
173 if ( root ) {
174 _addOne(root);
176 for ( GSList const *iter=layers ; iter ; iter = iter->next ) {
177 SPObject *layer=static_cast<SPObject *>(iter->data);
179 for ( SPObject* curr = layer; curr && (curr != root) ; curr = SP_OBJECT_PARENT(curr) ) {
180 if ( (curr != root) && root->isAncestorOf(curr) && !includes(curr) ) {
181 // Filter out objects in the middle of being deleted
183 // Such may have been the cause of bug 1339397.
184 // See http://sourceforge.net/tracker/index.php?func=detail&aid=1339397&group_id=93438&atid=604306
186 SPObject const *higher = curr;
187 while ( higher && (SP_OBJECT_PARENT(higher) != root) ) {
188 higher = SP_OBJECT_PARENT(higher);
189 }
190 Node* node = higher ? SP_OBJECT_REPR(higher) : 0;
191 if ( node && node->parent() ) {
192 sigc::connection connection = curr->connectModified(sigc::mem_fun(*this, &LayerManager::_objectModified));
194 LayerWatcher *eye = new LayerWatcher(this, curr, connection);
195 _watchers.push_back( eye );
196 SP_OBJECT_REPR(curr)->addObserver(*eye);
198 _addOne(curr);
199 }
200 }
201 }
202 }
203 }
204 }
206 // Connected to the desktop's CurrentLayerChanged signal
207 void LayerManager::_selectedLayerChanged(SPObject *layer)
208 {
209 // notify anyone who's listening to this instead of directly to the desktop
210 _layer_changed_signal.emit(layer);
211 }
213 }
215 /*
216 Local Variables:
217 mode:c++
218 c-file-style:"stroustrup"
219 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
220 indent-tabs-mode:nil
221 fill-column:99
222 End:
223 */
224 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :