X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=blobdiff_plain;f=pv%2Fviews%2Ftrace%2Fview.hpp;h=4bde31d6dd17e3f6a5dd417a3397ebb98a3ded77;hp=8e78b6260e2143dcbb141ad2a5aa0f1b4836c822;hb=f6b6c9bf50999dc99f9517318ffd3114cae4960f;hpb=cbd9ec7f751a5403d1465e966ccecd31b7086e8a

diff --git a/pv/views/trace/view.hpp b/pv/views/trace/view.hpp
index 8e78b626..4bde31d6 100644
--- a/pv/views/trace/view.hpp
+++ b/pv/views/trace/view.hpp
@@ -129,6 +129,8 @@ public:
 	virtual void remove_decode_signal(shared_ptr<data::DecodeSignal> signal);
 #endif
 
+	shared_ptr<Signal> get_signal_under_mouse_cursor() const;
+
 	/**
 	 * Returns the view of the owner.
 	 */
@@ -301,6 +303,15 @@ public:
 
 	const QPoint& hover_point() const;
 
+	/**
+	 * Determines the closest level change (i.e. edge) to a given point, which
+	 * is useful for e.g. the "snap to edge" functionality.
+	 *
+	 * @param p The current position of the mouse cursor
+	 * @return The sample number of the nearest level change or -1 if none
+	 */
+	int64_t get_nearest_level_change(const QPoint &p);
+
 	void restack_all_trace_tree_items();
 
 	int header_width() const;
@@ -517,6 +528,8 @@ private:
 	vector< shared_ptr<TriggerMarker> > trigger_markers_;
 
 	QPoint hover_point_;
+	shared_ptr<Signal> signal_under_mouse_cursor_;
+	uint16_t snap_distance_;
 
 	unsigned int sticky_events_;
 	QTimer lazy_event_handler_;