/* * Inkscape::LayerManager - a view of a document's layers, relative * to a particular desktop * * Copyright 2006 MenTaLguY <mental@rydia.net> * * Released under GNU GPL, read the file 'COPYING' for more information */ #include <set> #include <sigc++/functors/mem_fun.h> #include <sigc++/adaptors/hide.h> #include "gc-managed.h" #include "gc-finalized.h" #include "document.h" #include "desktop.h" #include "desktop-handles.h" #include "layer-manager.h" #include "prefs-utils.h" #include "ui/view/view.h" #include "selection.h" #include "sp-object.h" #include "sp-item-group.h" #include "xml/node.h" #include "xml/node-observer.h" #include "util/format.h" // #include "debug/event-tracker.h" // #include "debug/simple-event.h" namespace Inkscape { using Inkscape::XML::Node; class LayerManager::LayerWatcher : public Inkscape::XML::NodeObserver { public: LayerWatcher(LayerManager* mgr, SPObject* obj, sigc::connection c) : _mgr(mgr), _obj(obj), _connection(c), _lockedAttr(g_quark_from_string("sodipodi:insensitive")), _labelAttr(g_quark_from_string("inkscape:label")) {} virtual void notifyChildAdded( Node &/*node*/, Node &/*child*/, Node */*prev*/ ) {} virtual void notifyChildRemoved( Node &/*node*/, Node &/*child*/, Node */*prev*/ ) {} virtual void notifyChildOrderChanged( Node &/*node*/, Node &/*child*/, Node */*old_prev*/, Node */*new_prev*/ ) {} virtual void notifyContentChanged( Node &/*node*/, Util::ptr_shared<char> /*old_content*/, Util::ptr_shared<char> /*new_content*/ ) {} virtual void notifyAttributeChanged( Node &/*node*/, GQuark name, Util::ptr_shared<char> /*old_value*/, Util::ptr_shared<char> /*new_value*/ ) { if ( name == _lockedAttr || name == _labelAttr ) { if ( _mgr && _obj ) { _mgr->_objectModified( _obj, 0 ); } } } LayerManager* _mgr; SPObject* _obj; sigc::connection _connection; GQuark _lockedAttr; GQuark _labelAttr; }; /* namespace { Util::ptr_shared<char> stringify_node(Node const &node); Util::ptr_shared<char> stringify_obj(SPObject const &obj) { gchar *string; if (obj.id) { string = g_strdup_printf("SPObject(%p)=%s repr(%p)", &obj, obj.id, obj.repr); } else { string = g_strdup_printf("SPObject(%p) repr(%p)", &obj, obj.repr); } Util::ptr_shared<char> result=Util::share_string(string); g_free(string); return result; } typedef Debug::SimpleEvent<Debug::Event::OTHER> DebugLayer; class DebugLayerNote : public DebugLayer { public: DebugLayerNote(Util::ptr_shared<char> descr) : DebugLayer(Util::share_static_string("layer-note")) { _addProperty("descr", descr); } }; class DebugLayerRebuild : public DebugLayer { public: DebugLayerRebuild() : DebugLayer(Util::share_static_string("rebuild-layers")) { } }; class DebugLayerObj : public DebugLayer { public: DebugLayerObj(SPObject const& obj, Util::ptr_shared<char> name) : DebugLayer(name) { _addProperty("layer", stringify_obj(obj)); } }; class DebugAddLayer : public DebugLayerObj { public: DebugAddLayer(SPObject const &obj) : DebugLayerObj(obj, Util::share_static_string("add-layer")) { } }; } // end of namespace */ LayerManager::LayerManager(SPDesktop *desktop) : _desktop(desktop), _document(NULL) { _layer_connection = desktop->connectCurrentLayerChanged( sigc::mem_fun(*this, &LayerManager::_selectedLayerChanged) ); sigc::bound_mem_functor1<void, Inkscape::LayerManager, SPDocument*> first = sigc::mem_fun(*this, &LayerManager::_setDocument); // This next line has problems on gcc 4.0.2 sigc::slot<void, SPDocument*> base2 = first; sigc::slot<void,SPDesktop*,SPDocument*> slot2 = sigc::hide<0>( base2 ); _document_connection = desktop->connectDocumentReplaced( slot2 ); _setDocument(desktop->doc()); } LayerManager::~LayerManager() { _layer_connection.disconnect(); _document_connection.disconnect(); _resource_connection.disconnect(); } void LayerManager::setCurrentLayer( SPObject* obj ) { //g_return_if_fail( _desktop->currentRoot() ); if ( _desktop->currentRoot() ) { _desktop->setCurrentLayer( obj ); if ( prefs_get_int_attribute_limited("options.selection", "layerdeselect", 1, 0, 1) ) { sp_desktop_selection( _desktop )->clear(); } } } void LayerManager::renameLayer( SPObject* obj, gchar const *label ) { Glib::ustring incoming( label ? label : "" ); Glib::ustring result(incoming); Glib::ustring base(incoming); guint startNum = 1; Glib::ustring::size_type pos = base.rfind('#'); if ( pos != Glib::ustring::npos ) { gchar* numpart = g_strdup(base.substr(pos+1).c_str()); if ( numpart ) { gchar* endPtr = 0; guint64 val = g_ascii_strtoull( numpart, &endPtr, 10); if ( ((val > 0) || (endPtr != numpart)) && (val < 65536) ) { base.erase( pos ); result = base; startNum = static_cast<int>(val); } g_free(numpart); } } std::set<Glib::ustring> currentNames; GSList const *layers=sp_document_get_resource_list(_document, "layer"); SPObject *root=_desktop->currentRoot(); if ( root ) { for ( GSList const *iter=layers ; iter ; iter = iter->next ) { SPObject *layer=static_cast<SPObject *>(iter->data); if ( layer != obj ) { currentNames.insert( layer->label() ? Glib::ustring(layer->label()) : Glib::ustring() ); } } } // Not sure if we need to cap it, but we'll just be paranoid for the moment // Intentionally unsigned guint endNum = startNum + 3000; for ( guint i = startNum; (i < endNum) && (currentNames.find(result) != currentNames.end()); i++ ) { gchar* suffix = g_strdup_printf("#%d", i); result = base; result += suffix; g_free(suffix); } obj->setLabel( result.c_str() ); } void LayerManager::_setDocument(SPDocument *document) { if (_document) { _resource_connection.disconnect(); } _document = document; if (document) { _resource_connection = sp_document_resources_changed_connect(document, "layer", sigc::mem_fun(*this, &LayerManager::_rebuild)); } _rebuild(); } void LayerManager::_objectModified( SPObject* obj, guint /*flags*/ ) { _details_changed_signal.emit( obj ); } void LayerManager::_rebuild() { // Debug::EventTracker<DebugLayerRebuild> tracker1(); while ( !_watchers.empty() ) { LayerWatcher* one = _watchers.back(); _watchers.pop_back(); if ( one->_obj ) { Node* node = SP_OBJECT_REPR(one->_obj); if ( node ) { node->removeObserver(*one); } one->_connection.disconnect(); } } _clear(); if (!_document) // http://sourceforge.net/mailarchive/forum.php?thread_name=5747bce9a7ed077c1b4fc9f0f4f8a5e0%40localhost&forum_name=inkscape-devel return; GSList const *layers = sp_document_get_resource_list(_document, "layer"); SPObject *root=_desktop->currentRoot(); if ( root ) { _addOne(root); std::set<SPGroup*> layersToAdd; for ( GSList const *iter = layers; iter; iter = iter->next ) { SPObject *layer = static_cast<SPObject *>(iter->data); // Debug::EventTracker<DebugLayerNote> tracker(Util::format("Examining %s", layer->label())); bool needsAdd = false; std::set<SPGroup*> additional; if ( root->isAncestorOf(layer) ) { needsAdd = true; for ( SPObject* curr = layer; curr && (curr != root) && needsAdd; curr = SP_OBJECT_PARENT(curr) ) { if ( SP_IS_GROUP(curr) ) { SPGroup* group = SP_GROUP(curr); if ( group->layerMode() == SPGroup::LAYER ) { // If we have a layer-group as the one or a parent, ensure it is listed as a valid layer. needsAdd &= ( g_slist_find(const_cast<GSList *>(layers), curr) != NULL ); if ( (!(group->repr)) || (!(group->repr->parent())) ) { needsAdd = false; } } else { // If a non-layer group is a parent of layer groups, then show it also as a layer. // TODO add the magic Inkscape group mode? if ( group->repr && group->repr->parent() ) { additional.insert(group); } else { needsAdd = false; } } } } } if ( needsAdd ) { if ( !includes(layer) ) { layersToAdd.insert(SP_GROUP(layer)); } for ( std::set<SPGroup*>::iterator it = additional.begin(); it != additional.end(); ++it ) { if ( !includes(*it) ) { layersToAdd.insert(*it); } } } } for ( std::set<SPGroup*>::iterator it = layersToAdd.begin(); it != layersToAdd.end(); ++it ) { SPGroup* layer = *it; // Filter out objects in the middle of being deleted // Such may have been the cause of bug 1339397. // See http://sourceforge.net/tracker/index.php?func=detail&aid=1339397&group_id=93438&atid=604306 SPObject const *higher = layer; while ( higher && (SP_OBJECT_PARENT(higher) != root) ) { higher = SP_OBJECT_PARENT(higher); } Node* node = higher ? SP_OBJECT_REPR(higher) : 0; if ( node && node->parent() ) { // Debug::EventTracker<DebugAddLayer> tracker(*layer); sigc::connection connection = layer->connectModified(sigc::mem_fun(*this, &LayerManager::_objectModified)); LayerWatcher *eye = new LayerWatcher(this, layer, connection); _watchers.push_back( eye ); SP_OBJECT_REPR(layer)->addObserver(*eye); _addOne(layer); } } } } // Connected to the desktop's CurrentLayerChanged signal void LayerManager::_selectedLayerChanged(SPObject *layer) { // notify anyone who's listening to this instead of directly to the desktop _layer_changed_signal.emit(layer); } } /* Local Variables: mode:c++ c-file-style:"stroustrup" c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +)) indent-tabs-mode:nil fill-column:99 End: */ // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :