Bugfix for issue #476

crash: open new image while zoom window is open

rtgui/editorpanel.cc

@@ -402,14 +402,13 @@ void EditorPanel::close () {
         delete previewHandler;
         previewHandler= NULL;
 
-        rtengine::StagedImageProcessor::destroy (ipc);
-        ipc = NULL;
-
         if(iarea)
         {
             iarea->imageArea->setPreviewHandler (NULL);
             iarea->imageArea->setImProcCoordinator (NULL);
         }
+        rtengine::StagedImageProcessor::destroy (ipc);
+        ipc = NULL;
         navigator->previewWindow->setPreviewHandler (NULL);
   //      navigator->previewWindow->setImageArea (NULL);
 

rtgui/imagearea.cc

@@ -76,8 +76,22 @@ void ImageArea::on_resized (Gtk::Allocation& req) {
 }
 
 void ImageArea::setImProcCoordinator (rtengine::StagedImageProcessor* ipc_) {
+    if( !ipc_ ){
+        focusGrabber = NULL;
+        std::list<CropWindow*>::iterator i = cropWins.begin();
+        if( i!=cropWins.end() ){
+            (*i)->getPosition (lastClosedX, lastClosedY);
+            (*i)->getSize (lastClosedW, lastClosedH);
+        }
+        for( ;i!=cropWins.end();i++ ){
+        	delete *i;
+        }
+        cropWins.clear();
 
+        mainCropWindow->setObservedCropWin (NULL);
+    }
     ipc = ipc_;
+
 }
 
 void ImageArea::setPreviewHandler (PreviewHandler* ph) {