X-Git-Url: http://git.code-monkey.de/?p=pulseview.git;a=blobdiff_plain;f=pv%2Fviews%2Ftrace%2Fview.hpp;h=7df0f3de23bfdebf9439f7f7fc02248e603f50d4;hp=1cff6ab7bbf245f52a7508c20b52b446e26d15bc;hb=fb64180193664005567570724d52b685913e15ed;hpb=d9b55cc8ab01e83b392762ed1fa400fdafafb60b

diff --git a/pv/views/trace/view.hpp b/pv/views/trace/view.hpp
index 1cff6ab..7df0f3d 100644
--- a/pv/views/trace/view.hpp
+++ b/pv/views/trace/view.hpp
@@ -64,12 +64,10 @@ namespace views {
 
 namespace trace {
 
-class CursorHeader;
 class DecodeTrace;
 class Header;
 class Ruler;
 class Signal;
-class Trace;
 class Viewport;
 class TriggerMarker;
 
@@ -131,6 +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.
 	 */
@@ -303,8 +303,19 @@ 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) const;
+
 	void restack_all_trace_tree_items();
 
+	int header_width() const;
+
 	void on_setting_changed(const QString &key, const QVariant &value);
 
 Q_SIGNALS:
@@ -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_;