X-Git-Url: http://git.code-monkey.de/?a=blobdiff_plain;f=pv%2Fview%2Fviewport.hpp;h=c2c42d155d79bf9ecbe28ed54b2741f37271b554;hb=60d9b99a32e551cffd2b537d3e157d578a761c9b;hp=f43177d2d3f611d9ea00abe87b6eadfbe02ce92e;hpb=282905348863fe871a48c680bd12bc1dee364a43;p=pulseview.git

diff --git a/pv/view/viewport.hpp b/pv/view/viewport.hpp
index f43177d..c2c42d1 100644
--- a/pv/view/viewport.hpp
+++ b/pv/view/viewport.hpp
@@ -18,12 +18,15 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  */
 
-#ifndef PULSEVIEW_PV_VIEW_VIEWPORT_H
-#define PULSEVIEW_PV_VIEW_VIEWPORT_H
+#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;
@@ -43,6 +46,13 @@ public:
 	explicit Viewport(View &parent);
 
 private:
+	/**
+	 * Indicates when a view item is being hovered over.
+	 * @param item The item that is being hovered over, or @c nullptr
+	 * if no view item is being hovered over.
+	 */
+	void item_hover(const std::shared_ptr<pv::view::ViewItem> &item);
+
 	/**
 	 * Gets the first view item which has a hit-box that contains @c pt .
 	 * @param pt the point to search with.
@@ -86,7 +96,7 @@ private:
 	void wheelEvent(QWheelEvent *event);
 
 private:
-	double drag_offset_;
+	boost::optional<pv::util::Timestamp> drag_offset_;
 
 	double pinch_offset0_;
 	double pinch_offset1_;
@@ -96,4 +106,4 @@ private:
 } // namespace view
 } // namespace pv
 
-#endif // PULSEVIEW_PV_VIEW_VIEWPORT_H
+#endif // PULSEVIEW_PV_VIEW_VIEWPORT_HPP