Added signals slot to block scenegraph updates

BasePlugin/BaseInterface.hh

@@ -122,6 +122,17 @@ class BaseInterface {
     */
     virtual void updateView() {};
 
+    /** \brief Tell the core to prevent scenegraph updates.
+     *
+     *  Emit this Signal if you want to skip scenegraph updates. E.g. if you add a large number of objects
+     *  or modify them it's much more efficient to block scenegraph updates until you finished and then
+     *  do only one update run.
+     *
+     *  The function itself is counting the number of blocks internally to allow multiple plugins for concurrent
+     *  blocks. The function is queued to ensure that it is processed in line with load save operations.
+     */
+    virtual void blockScenegraphUpdates(bool _block) {};
+
     /** \brief An object has been changed or added by this plugin
       *
       *  Emit this Signal, if you updated any part of an object.\n

Core/Core.cc

@@ -934,7 +934,14 @@ void Core::updateUI() {
   QApplication::processEvents();
 }
 
+//-----------------------------------------------------------------------------
 
+void Core::blockScenegraphUpdates(bool _block) {
+  if (_block)
+    OpenFlipper::Options::blockSceneGraphUpdates();
+  else
+    OpenFlipper::Options::unblockSceneGraphUpdates();
+}
 
 //-----------------------------------------------------------------------------
 

Core/Core.hh

@@ -650,6 +650,9 @@ public slots:
     /// Called when a  plugin requests an update in the viewer
     void updateView();
 
+    /// Called when a plugin wants to lock or unlock scenegraph updates
+    void  blockScenegraphUpdates(bool _block);
+
     /// process events during script execution to keep the ui alive
     void updateUI();
 

Core/PluginLoader.cc

@@ -875,6 +875,8 @@ void Core::loadPlugin(const QString& _filename,const bool _silent, QString& _lic
     if ( checkSignal(plugin,"updateView()") )
       connect(plugin,SIGNAL(updateView()),this,SLOT(updateView()), Qt::AutoConnection);
 
+    if ( checkSignal(plugin,"blockScenegraphUpdates(bool)") )
+      connect(plugin,SIGNAL(blockScenegraphUpdates(bool)),this,SLOT(blockScenegraphUpdates(bool)), Qt::QueuedConnection);
 
     if ( checkSignal(plugin,"updatedObject(int)") && checkSignal(plugin,"updatedObject(int,const UpdateType&)") ){