Add signal for notification of object position changes

diff --git a/ChangeLog b/ChangeLog
index 622e817e536072dc8d39362ea12008be943099c9..8edea42d5febc60a1512d8bf2b8f106a00477e18 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2006-03-05  MenTaLguY  <mental@rydia.net>
+
+       * src/sp-object.h, src/sp-object.cpp:
+
+         Add signal for notification of object position changes.
+
 2006-03-05  MenTaLguY  <mental@rydia.net>
 
        * src/Makefile_insert, src/document-subset.cpp, src/document-subset.h:

diff --git a/src/sp-object.cpp b/src/sp-object.cpp
index 4a1a2e09ed84a6a28825af91485be617cbaec2a9..fd368dd613a0164915c70f0797dec0bb09f10f08 100644 (file)
--- a/src/sp-object.cpp
+++ b/src/sp-object.cpp
@@ -192,6 +192,7 @@ sp_object_init(SPObject *object)
     object->_collection_policy = SPObject::COLLECT_WITH_PARENT;
 
     new (&object->_delete_signal) sigc::signal<void, SPObject *>();
+    new (&object->_position_changed_signal) sigc::signal<void, SPObject *>();
     object->_successor = NULL;
 
     object->_label = NULL;
@@ -221,6 +222,7 @@ sp_object_finalize(GObject *object)
     }
 
     spobject->_delete_signal.~signal();
+    spobject->_position_changed_signal.~signal();
 }
 
 namespace {
@@ -771,6 +773,7 @@ static void sp_object_order_changed(SPObject *object, Inkscape::XML::Node *child
     g_return_if_fail(ochild != NULL);
     SPObject *prev = new_ref ? sp_object_get_child_by_repr(object, new_ref) : NULL;
     sp_object_reorder(ochild, prev);
+    ochild->_position_changed_signal.emit(ochild);
 }
 
 /**

diff --git a/src/sp-object.h b/src/sp-object.h
index 767f8b978abb400dc837f675f8eb47fadb55e459..e853de097907055d0623422677b10fb8de7212d1 100644 (file)
--- a/src/sp-object.h
+++ b/src/sp-object.h
@@ -322,6 +322,10 @@ struct SPObject : public GObject {
         return _delete_signal.connect(slot);
     }
 
+    sigc::connection connectPositionChanged(sigc::slot<void, SPObject *> slot) {
+        return _position_changed_signal.connect(slot);
+    }
+
     /** @brief Returns the object which supercedes this one (if any).
      *
      * This is mainly useful for ensuring we can correctly perform a series of moves or deletes,
@@ -442,6 +446,7 @@ struct SPObject : public GObject {
     void _requireSVGVersion(Inkscape::Version version);
 
     sigc::signal<void, SPObject *> _delete_signal;
+    sigc::signal<void, SPObject *> _position_changed_signal;
     SPObject *_successor;
     CollectionPolicy _collection_policy;
     gchar *_label;