piqt importand fix with qmap serialization

ImageView now supprt view interaction
BlockView update background when EnabledChange

libs/blockview/blockview.cpp

@@ -113,6 +113,9 @@ bool BlockView::event(QEvent * e) {
 		QGraphicsView::scale(cscl / prev_app_scale, cscl / prev_app_scale);
 		prev_app_scale = cscl;
 	}
+	if (e->type() == QEvent::EnabledChange) {
+		_updateBack();
+	}
 	return QGraphicsView::event(e);
 }