X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=blobdiff_plain;f=pv%2Fview%2Fsignal.hpp;h=714b44f6d9d27fcfc4881dc9e4850138f575b0a4;hp=d96a85cf3b82ca3854efcc1c99ff5bdf8759c9e4;hb=214470fc17e73bbf4664f4c1678a7dd30c905bf2;hpb=e94f43c6539a9ec9412829550d8f025902ccc341

diff --git a/pv/view/signal.hpp b/pv/view/signal.hpp
index d96a85cf..714b44f6 100644
--- a/pv/view/signal.hpp
+++ b/pv/view/signal.hpp
@@ -81,6 +81,22 @@ public:
 
 	void delete_pressed();
 
+	/**
+	 * Returns the offset to show the drag handle.
+	 */
+	virtual int scale_handle_offset() const = 0;
+
+	/**
+	 * Handles the scale handle being dragged to an offset.
+	 * @param offset the offset the scale handle was dragged to.
+	 */
+	virtual void scale_handle_dragged(int offset) = 0;
+
+	/**
+	 * Handles the scale handle being being released.
+	 */
+	virtual void scale_handle_released() {};
+
 private Q_SLOTS:
 	void on_disable();