X-Git-Url: http://git.code-monkey.de/?a=blobdiff_plain;f=pv%2Fview%2Fsignal.hpp;h=bcd4e2eb617eef83a46a5c1e98bf308751b48d8e;hb=99af6802961b0a5ec7ec7d3ff2215c8eb6925ca3;hp=d96a85cf3b82ca3854efcc1c99ff5bdf8759c9e4;hpb=4b5782e1c7b6fec1f9c4ff2ba6f282cadecd70cd;p=pulseview.git

diff --git a/pv/view/signal.hpp b/pv/view/signal.hpp
index d96a85c..bcd4e2e 100644
--- a/pv/view/signal.hpp
+++ b/pv/view/signal.hpp
@@ -28,6 +28,7 @@
 
 #include <stdint.h>
 
+#include "signalscalehandle.hpp"
 #include "trace.hpp"
 #include "viewitemowner.hpp"
 
@@ -75,12 +76,30 @@ public:
 	 */
 	const item_list& child_items() const;
 
+	void paint_back(QPainter &p, const ViewItemPaintParams &pp);
+
 	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();
 
@@ -88,6 +107,7 @@ protected:
 	pv::Session &session_;
 	std::shared_ptr<sigrok::Channel> channel_;
 
+	const std::shared_ptr<SignalScaleHandle> scale_handle_;
 	const item_list items_;
 
 	QComboBox *name_widget_;