X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=blobdiff_plain;f=pv%2Fview%2Fviewport.hpp;h=704e73115514b2183cb4ce058b86bbc9a9000a9d;hp=2c8211b8dce43b2cee22e8fb872ae7a64af15c2c;hb=eee89ff865c28854eebdcecbe344f225b9ee366f;hpb=7a01bd3654ed046216308fa64edfd79be7cd525f

diff --git a/pv/view/viewport.hpp b/pv/view/viewport.hpp
index 2c8211b8..704e7311 100644
--- a/pv/view/viewport.hpp
+++ b/pv/view/viewport.hpp
@@ -21,9 +21,12 @@
 #ifndef PULSEVIEW_PV_VIEW_VIEWPORT_HPP
 #define PULSEVIEW_PV_VIEW_VIEWPORT_HPP
 
+#include <boost/optional.hpp>
+
 #include <QTimer>
 #include <QTouchEvent>
 
+#include "pv/util.hpp"
 #include "viewwidget.hpp"
 
 class QPainter;
@@ -93,7 +96,8 @@ private:
 	void wheelEvent(QWheelEvent *event);
 
 private:
-	double drag_offset_;
+	boost::optional<pv::util::Timestamp> drag_offset_;
+	int drag_v_offset_;
 
 	double pinch_offset0_;
 	double pinch_offset1_;