Add row colors and some fixes

[pulseview.git] / pv / views / trace / signal.hpp

diff --git a/pv/views/trace/signal.hpp b/pv/views/trace/signal.hpp
index d763609d972abc322dc796e9aca32a2add66269f..c9f38dd96107657d7e16fd6fb05b71a16488dfa2 100644 (file)
--- 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"
 
@@ -44,6 +48,15 @@ class SignalData;
 namespace views {
 namespace trace {
 
+/**
+ * The Signal class represents a series of numeric values that can be drawn.
+ * This is the main difference to the more generic @ref Trace class.
+ *
+ * It is generally accepted that Signal instances consider themselves to be
+ * individual channels on e.g. an oscilloscope, though it should be kept in
+ * mind that virtual signals (e.g. math) will also be served by the Signal
+ * class.
+ */
 class Signal : public Trace, public ViewItemOwner
 {
        Q_OBJECT
@@ -59,6 +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.
         */
@@ -67,14 +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();