X-Git-Url: http://git.code-monkey.de/?a=blobdiff_plain;f=pv%2Fview%2Fviewwidget.hpp;h=6fd1ecefd1f853a2403fc880cacb36c1c699a108;hb=282905348863fe871a48c680bd12bc1dee364a43;hp=b6b1a5b48ec99a8166ba426c03f8425d43437578;hpb=1c91f1a230ac7f61ad0c2ed9718d12514353b629;p=pulseview.git

diff --git a/pv/view/viewwidget.hpp b/pv/view/viewwidget.hpp
index b6b1a5b..6fd1ece 100644
--- a/pv/view/viewwidget.hpp
+++ b/pv/view/viewwidget.hpp
@@ -65,6 +65,23 @@ protected:
 	 */
 	void drag_items(const QPoint &delta);
 
+	/**
+	 * Sets this item into the dragged state.
+	 */
+	virtual void drag();
+
+	/**
+	 * Drag the background by the delta offset.
+	 * @param delta the drag offset in pixels.
+	 * @remarks The default implementation does nothing.
+	 */
+	virtual void drag_by(const QPoint &delta);
+
+	/**
+	 * Sets this item into the un-dragged state.
+	 */
+	virtual void drag_release();
+
 	/**
 	 * Gets the items in the view widget.
 	 */