2edc26de4104c41648ca251c43a188403c27d8ef
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 "sp-item-group.h"
24 #include "xml/node.h"
25 #include "xml/node-observer.h"
26 // #include "debug/event-tracker.h"
27 // #include "debug/simple-event.h"
29 namespace Inkscape {
32 using Inkscape::XML::Node;
34 class LayerManager::LayerWatcher : public Inkscape::XML::NodeObserver {
35 public:
36 LayerWatcher(LayerManager* mgr, SPObject* obj, sigc::connection c) :
37 _mgr(mgr),
38 _obj(obj),
39 _connection(c),
40 _lockedAttr(g_quark_from_string("sodipodi:insensitive")),
41 _labelAttr(g_quark_from_string("inkscape:label"))
42 {}
44 virtual void notifyChildAdded( Node &/*node*/, Node &/*child*/, Node */*prev*/ ) {}
45 virtual void notifyChildRemoved( Node &/*node*/, Node &/*child*/, Node */*prev*/ ) {}
46 virtual void notifyChildOrderChanged( Node &/*node*/, Node &/*child*/, Node */*old_prev*/, Node */*new_prev*/ ) {}
47 virtual void notifyContentChanged( Node &/*node*/, Util::ptr_shared<char> /*old_content*/, Util::ptr_shared<char> /*new_content*/ ) {}
48 virtual void notifyAttributeChanged( Node &/*node*/, GQuark name, Util::ptr_shared<char> /*old_value*/, Util::ptr_shared<char> /*new_value*/ ) {
49 if ( name == _lockedAttr || name == _labelAttr ) {
50 if ( _mgr && _obj ) {
51 _mgr->_objectModified( _obj, 0 );
52 }
53 }
54 }
56 LayerManager* _mgr;
57 SPObject* _obj;
58 sigc::connection _connection;
59 GQuark _lockedAttr;
60 GQuark _labelAttr;
61 };
63 /*
64 namespace {
66 Util::ptr_shared<char> stringify_node(Node const &node);
68 Util::ptr_shared<char> stringify_obj(SPObject const &obj) {
69 gchar *string;
71 if (obj.id) {
72 string = g_strdup_printf("SPObject(%p)=%s repr(%p)", &obj, obj.id, obj.repr);
73 } else {
74 string = g_strdup_printf("SPObject(%p) repr(%p)", &obj, obj.repr);
75 }
77 Util::ptr_shared<char> result=Util::share_string(string);
78 g_free(string);
79 return result;
81 }
83 typedef Debug::SimpleEvent<Debug::Event::OTHER> DebugLayer;
86 class DebugLayerRebuild : public DebugLayer {
87 public:
88 DebugLayerRebuild()
89 : DebugLayer(Util::share_static_string("rebuild-layers"))
90 {
91 _addProperty("simple", Util::share_static_string("foo"));
92 }
93 };
95 class DebugLayerObj : public DebugLayer {
96 public:
97 DebugLayerObj(SPObject const& obj, Util::ptr_shared<char> name)
98 : DebugLayer(name)
99 {
100 _addProperty("layer", stringify_obj(obj));
101 }
102 };
104 class DebugAddLayer : public DebugLayerObj {
105 public:
106 DebugAddLayer(SPObject const &obj)
107 : DebugLayerObj(obj, Util::share_static_string("add-layer"))
108 {
109 }
110 };
113 }
114 */
116 LayerManager::LayerManager(SPDesktop *desktop)
117 : _desktop(desktop), _document(NULL)
118 {
119 _layer_connection = desktop->connectCurrentLayerChanged( sigc::mem_fun(*this, &LayerManager::_selectedLayerChanged) );
121 sigc::bound_mem_functor1<void, Inkscape::LayerManager, SPDocument*> first = sigc::mem_fun(*this, &LayerManager::_setDocument);
123 // This next line has problems on gcc 4.0.2
124 sigc::slot<void, SPDocument*> base2 = first;
126 sigc::slot<void,SPDesktop*,SPDocument*> slot2 = sigc::hide<0>( base2 );
127 _document_connection = desktop->connectDocumentReplaced( slot2 );
129 _setDocument(desktop->doc());
130 }
132 LayerManager::~LayerManager()
133 {
134 _layer_connection.disconnect();
135 _document_connection.disconnect();
136 _resource_connection.disconnect();
137 }
139 void LayerManager::setCurrentLayer( SPObject* obj )
140 {
141 //g_return_if_fail( _desktop->currentRoot() );
142 if ( _desktop->currentRoot() ) {
143 _desktop->setCurrentLayer( obj );
145 if ( prefs_get_int_attribute_limited("options.selection", "layerdeselect", 1, 0, 1) ) {
146 sp_desktop_selection( _desktop )->clear();
147 }
148 }
149 }
151 void LayerManager::renameLayer( SPObject* obj, gchar const *label )
152 {
153 Glib::ustring incoming( label ? label : "" );
154 Glib::ustring result(incoming);
155 Glib::ustring base(incoming);
156 guint startNum = 1;
158 Glib::ustring::size_type pos = base.rfind('#');
159 if ( pos != Glib::ustring::npos ) {
160 gchar* numpart = g_strdup(base.substr(pos+1).c_str());
161 if ( numpart ) {
162 gchar* endPtr = 0;
163 guint64 val = g_ascii_strtoull( numpart, &endPtr, 10);
164 if ( ((val > 0) || (endPtr != numpart)) && (val < 65536) ) {
165 base.erase( pos );
166 result = base;
167 startNum = static_cast<int>(val);
168 }
169 g_free(numpart);
170 }
171 }
173 std::set<Glib::ustring> currentNames;
174 GSList const *layers=sp_document_get_resource_list(_document, "layer");
175 SPObject *root=_desktop->currentRoot();
176 if ( root ) {
177 for ( GSList const *iter=layers ; iter ; iter = iter->next ) {
178 SPObject *layer=static_cast<SPObject *>(iter->data);
179 if ( layer != obj ) {
180 currentNames.insert( layer->label() ? Glib::ustring(layer->label()) : Glib::ustring() );
181 }
182 }
183 }
185 // Not sure if we need to cap it, but we'll just be paranoid for the moment
186 // Intentionally unsigned
187 guint endNum = startNum + 3000;
188 for ( guint i = startNum; (i < endNum) && (currentNames.find(result) != currentNames.end()); i++ ) {
189 gchar* suffix = g_strdup_printf("#%d", i);
190 result = base;
191 result += suffix;
193 g_free(suffix);
194 }
196 obj->setLabel( result.c_str() );
197 }
201 void LayerManager::_setDocument(SPDocument *document) {
202 if (_document) {
203 _resource_connection.disconnect();
204 }
205 _document = document;
206 if (document) {
207 _resource_connection = sp_document_resources_changed_connect(document, "layer", sigc::mem_fun(*this, &LayerManager::_rebuild));
208 }
209 _rebuild();
210 }
212 void LayerManager::_objectModified( SPObject* obj, guint /*flags*/ )
213 {
214 _details_changed_signal.emit( obj );
215 }
217 void LayerManager::_rebuild() {
218 // Debug::EventTracker<DebugLayerRebuild> tracker1();
220 while ( !_watchers.empty() ) {
221 LayerWatcher* one = _watchers.back();
222 _watchers.pop_back();
223 if ( one->_obj ) {
224 Node* node = SP_OBJECT_REPR(one->_obj);
225 if ( node ) {
226 node->removeObserver(*one);
227 }
228 one->_connection.disconnect();
229 }
230 }
232 _clear();
234 if (!_document) // http://sourceforge.net/mailarchive/forum.php?thread_name=5747bce9a7ed077c1b4fc9f0f4f8a5e0%40localhost&forum_name=inkscape-devel
235 return;
237 GSList const *layers = sp_document_get_resource_list(_document, "layer");
238 SPObject *root=_desktop->currentRoot();
239 if ( root ) {
240 _addOne(root);
242 std::set<SPGroup*> layersToAdd;
244 for ( GSList const *iter = layers; iter; iter = iter->next ) {
245 SPObject *layer = static_cast<SPObject *>(iter->data);
246 bool needsAdd = false;
247 std::set<SPGroup*> additional;
249 if ( root->isAncestorOf(layer) ) {
250 needsAdd = true;
251 for ( SPObject* curr = layer; curr && (curr != root) && needsAdd; curr = SP_OBJECT_PARENT(curr) ) {
252 if ( SP_IS_GROUP(curr) ) {
253 SPGroup* group = SP_GROUP(curr);
254 if ( group->layerMode() == SPGroup::LAYER ) {
255 // If we have a layer-group as the one or a parent, ensure it is listed as a valid layer.
256 needsAdd &= ( g_slist_find(const_cast<GSList *>(layers), curr) != NULL );
257 } else {
258 // If a non-layer group is a parent of layer groups, then show it also as a layer.
259 // TODO add the magic Inkscape group mode?
260 additional.insert(group);
261 }
262 }
263 }
264 }
265 if ( needsAdd ) {
266 if ( !includes(layer) ) {
267 layersToAdd.insert(SP_GROUP(layer));
268 }
269 for ( std::set<SPGroup*>::iterator it = additional.begin(); it != additional.end(); ++it ) {
270 layersToAdd.insert(*it);
271 }
272 }
273 }
275 for ( std::set<SPGroup*>::iterator it = layersToAdd.begin(); it != layersToAdd.end(); ++it ) {
276 SPGroup* layer = *it;
277 // Filter out objects in the middle of being deleted
279 // Such may have been the cause of bug 1339397.
280 // See http://sourceforge.net/tracker/index.php?func=detail&aid=1339397&group_id=93438&atid=604306
282 SPObject const *higher = layer;
283 while ( higher && (SP_OBJECT_PARENT(higher) != root) ) {
284 higher = SP_OBJECT_PARENT(higher);
285 }
286 Node* node = higher ? SP_OBJECT_REPR(higher) : 0;
287 if ( node && node->parent() ) {
288 // Debug::EventTracker<DebugAddLayer> tracker(*layer);
290 sigc::connection connection = layer->connectModified(sigc::mem_fun(*this, &LayerManager::_objectModified));
292 LayerWatcher *eye = new LayerWatcher(this, layer, connection);
293 _watchers.push_back( eye );
294 SP_OBJECT_REPR(layer)->addObserver(*eye);
296 _addOne(layer);
297 }
298 }
299 }
300 }
302 // Connected to the desktop's CurrentLayerChanged signal
303 void LayerManager::_selectedLayerChanged(SPObject *layer)
304 {
305 // notify anyone who's listening to this instead of directly to the desktop
306 _layer_changed_signal.emit(layer);
307 }
309 }
311 /*
312 Local Variables:
313 mode:c++
314 c-file-style:"stroustrup"
315 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
316 indent-tabs-mode:nil
317 fill-column:99
318 End:
319 */
320 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :