+/*
+ * This file is part of the PulseView project.
+ *
+ * Copyright (C) 2014 Joel Holdsworth <joel@airwebreathe.org.uk>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef PULSEVIEW_PV_VIEWS_TRACEVIEW_TIMEITEM_HPP
+#define PULSEVIEW_PV_VIEWS_TRACEVIEW_TIMEITEM_HPP
+
+#include "viewitem.hpp"
+
+namespace pv {
+namespace views {
+namespace trace {
+
+class View;
+
+class TimeItem : public ViewItem
+
+{
+ Q_OBJECT
+
+protected:
+ /**
+ * Constructor.
+ * @param view A reference to the view that owns this marker.
+ */
+ TimeItem(View &view);
+
+public:
+ /**
+ * Sets the time of the marker.
+ */
+ virtual void set_time(const pv::util::Timestamp& time) = 0;
+
+ virtual float get_x() const = 0;
+
+ /**
+ * Drags the item to a delta relative to the drag point.
+ * @param delta the offset from the drag point.
+ */
+ void drag_by(const QPoint &delta);
+
+protected:
+ View &view_;
+};
+
+} // namespace trace
+} // namespace views
+} // namespace pv
+
+#endif // PULSEVIEW_PV_VIEWS_TRACEVIEW_TIMEITEM_HPP