X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=blobdiff_plain;f=pv%2Fview%2Fsignal.hpp;h=db3286528a699964920cd47b3048d5daa7255428;hp=8208a762ca387bc040e88983b4fc9689f2f757dd;hb=3d79f521396c8e908fd237f5328153165099f5c3;hpb=7a01bd3654ed046216308fa64edfd79be7cd525f

diff --git a/pv/view/signal.hpp b/pv/view/signal.hpp
index 8208a762..db328652 100644
--- a/pv/view/signal.hpp
+++ b/pv/view/signal.hpp
@@ -28,7 +28,9 @@
 
 #include <stdint.h>
 
+#include "signalscalehandle.hpp"
 #include "trace.hpp"
+#include "viewitemowner.hpp"
 
 namespace sigrok {
 	class Channel;
@@ -44,7 +46,7 @@ class SignalData;
 
 namespace view {
 
-class Signal : public Trace
+class Signal : public Trace, public ViewItemOwner
 {
 	Q_OBJECT
 
@@ -69,12 +71,33 @@ public:
 
 	std::shared_ptr<sigrok::Channel> channel() const;
 
+	/**
+	 * Returns a list of row items owned by this object.
+	 */
+	const item_list& child_items() const;
+
 	virtual void populate_popup_form(QWidget *parent, QFormLayout *form);
 
 	QMenu* create_context_menu(QWidget *parent);
 
 	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();
 
@@ -82,6 +105,9 @@ protected:
 	pv::Session &session_;
 	std::shared_ptr<sigrok::Channel> channel_;
 
+	const std::shared_ptr<SignalScaleHandle> scale_handle_;
+	const item_list items_;
+
 	QComboBox *name_widget_;
 	bool updating_name_widget_;
 };