X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=blobdiff_plain;f=pv%2Fview%2Fanalogsignal.hpp;h=938d92d5b5c8d7e086fcef406ab66403fbc37b63;hp=72ff23b366fa96ba44e795452cdad1acafae15f9;hb=f74015db20c1ac85df6397df7199a030e6db828f;hpb=8eeb4256ba338a0be0f5311cdc2b98acf4370577

diff --git a/pv/view/analogsignal.hpp b/pv/view/analogsignal.hpp
index 72ff23b3..938d92d5 100644
--- a/pv/view/analogsignal.hpp
+++ b/pv/view/analogsignal.hpp
@@ -59,18 +59,34 @@ public:
 	 */
 	std::pair<int, int> v_extents() const;
 
+	/**
+	 * Returns the offset to show the drag handle.
+	 */
+	int scale_handle_offset() const;
+
+	/**
+	 * Handles the scale handle being dragged to an offset.
+	 * @param offset the offset the scale handle was dragged to.
+	 */
+	void scale_handle_dragged(int offset);
+
+	/**
+	 * @copydoc pv::view::Signal::signal_scale_handle_drag_release()
+	 */
+	void scale_handle_drag_release();
+
 	/**
 	 * Paints the background layer of the signal with a QPainter
 	 * @param p the QPainter to paint into.
 	 * @param pp the painting parameters object to paint with..
-	 **/
+	 */
 	void paint_back(QPainter &p, const ViewItemPaintParams &pp);
 
 	/**
 	 * Paints the mid-layer of the signal with a QPainter
 	 * @param p the QPainter to paint into.
 	 * @param pp the painting parameters object to paint with..
-	 **/
+	 */
 	void paint_mid(QPainter &p, const ViewItemPaintParams &pp);
 
 private:
@@ -84,9 +100,16 @@ private:
 		int y, int left, const int64_t start, const int64_t end,
 		const double pixels_offset, const double samples_per_pixel);
 
+	/**
+	 * Computes the scale factor from the scale index.
+	 */
+	float scale() const;
+
 private:
 	std::shared_ptr<pv::data::Analog> data_;
-	float scale_;
+
+	int scale_index_;
+	int scale_index_drag_offset_;
 };
 
 } // namespace view