Code

revert jasper's way overzealous fix in png-write.cpp rev 13700; new fix in item_rende...
[inkscape.git] / src / layer-manager.cpp
index 01af95424e53d6dec6bbdbcf2b42560d5b8b7a6b..e6a34852d9dc6c2baf7bda49d03fe96b96eee526 100644 (file)
  * 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 "xml/node.h"
+#include "xml/node-observer.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;
+};
+
+
 LayerManager::LayerManager(SPDesktop *desktop)
 : _desktop(desktop), _document(NULL)
 {
-    _layer_connection = desktop->connectCurrentLayerChanged(sigc::hide<0>(sigc::mem_fun(*this, &LayerManager::_rebuild)));
-    _document_connection = desktop->connectDocumentReplaced(sigc::hide<0>(sigc::mem_fun(*this, &LayerManager::_setDocument)));
+    _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());
 }
 
+
+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();
@@ -38,25 +148,68 @@ void LayerManager::_setDocument(SPDocument *document) {
     _rebuild();
 }
 
+void LayerManager::_objectModified( SPObject* obj, guint flags )
+{
+    _details_changed_signal.emit( obj );
+}
+
 void LayerManager::_rebuild() {
-    _clear();
-    GSList const *layers=sp_document_get_resource_list(_document, "layers");
-    for ( GSList const *iter=layers ; iter ; iter = iter->next ) {
-        SPObject *layer=static_cast<SPObject *>(iter->data);
-        _addOne(layer);
+    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();
+
+    GSList const *layers=sp_document_get_resource_list(_document, "layer");
     SPObject *root=_desktop->currentRoot();
-    SPObject *layer=_desktop->currentLayer();
-    for ( ; layer ; layer = SP_OBJECT_PARENT(layer) ) {
-        if (!includes(layer)) {
-            _addOne(layer);
-        }
-        if ( layer == root ) {
-            break;
+    if ( root ) {
+        _addOne(root);
+
+        for ( GSList const *iter=layers ; iter ; iter = iter->next ) {
+            SPObject *layer=static_cast<SPObject *>(iter->data);
+
+            for ( SPObject* curr = layer; curr && (curr != root) ; curr = SP_OBJECT_PARENT(curr) ) {
+                if ( (curr != root) && root->isAncestorOf(curr) && !includes(curr) ) {
+                    // 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 = curr;
+                    while ( higher && (SP_OBJECT_PARENT(higher) != root) ) {
+                        higher = SP_OBJECT_PARENT(higher);
+                    }
+                    Node* node = higher ? SP_OBJECT_REPR(higher) : 0;
+                    if ( node && node->parent() ) {
+                        sigc::connection connection = curr->connectModified(sigc::mem_fun(*this, &LayerManager::_objectModified));
+
+                        LayerWatcher *eye = new LayerWatcher(this, curr, connection);
+                        _watchers.push_back( eye );
+                        SP_OBJECT_REPR(curr)->addObserver(*eye);
+
+                        _addOne(curr);
+                    }
+                }
+            }
         }
     }
 }
 
+// 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);
+}
+
 }
 
 /*