X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=pv%2Fviews%2Ftrace%2Fsignal.hpp;h=c9f38dd96107657d7e16fd6fb05b71a16488dfa2;hb=88a2597864920ecdbe66cf0cd4b8172bdabb2263;hp=7f88720f7943904142008b82d88f8103caefa464;hpb=1373fec59223e7511078abe3dbf4a6b61b4af234;p=pulseview.git

diff --git a/pv/views/trace/signal.hpp b/pv/views/trace/signal.hpp
index 7f88720f..c9f38dd9 100644
--- a/pv/views/trace/signal.hpp
+++ b/pv/views/trace/signal.hpp
@@ -23,10 +23,14 @@
 #include <memory>
 
 #include <QComboBox>
+#include <QString>
+#include <QVariant>
 #include <QWidgetAction>
 
 #include <cstdint>
 
+#include <pv/data/logicsegment.hpp>
+
 #include "trace.hpp"
 #include "viewitemowner.hpp"
 
@@ -68,6 +72,15 @@ public:
 
 	virtual shared_ptr<pv::data::SignalData> data() const = 0;
 
+	/**
+	 * Determines the closest level change (i.e. edge) to a given sample, which
+	 * is useful for e.g. the "snap to edge" functionality.
+	 *
+	 * @param sample_pos Sample to use
+	 * @return The changes left and right of the given position
+	 */
+	virtual vector<data::LogicSegment::EdgePair> get_nearest_level_changes(uint64_t sample_pos) = 0;
+
 	/**
 	 * Returns true if the trace is visible and enabled.
 	 */
@@ -76,14 +89,16 @@ public:
 	shared_ptr<data::SignalBase> base() const;
 
 	virtual void save_settings(QSettings &settings) const;
+	virtual std::map<QString, QVariant> save_settings() const;
 
 	virtual void restore_settings(QSettings &settings);
+	virtual void restore_settings(std::map<QString, QVariant> settings);
 
 	void paint_back(QPainter &p, ViewItemPaintParams &pp);
 
 	virtual void populate_popup_form(QWidget *parent, QFormLayout *form);
 
-	QMenu* create_context_menu(QWidget *parent);
+	QMenu* create_header_context_menu(QWidget *parent);
 
 	void delete_pressed();