--- /dev/null
+/*
+ * This file is part of the PulseView project.
+ *
+ * Copyright (C) 2013 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_TRACETREEITEM_HPP
+#define PULSEVIEW_PV_VIEWS_TRACEVIEW_TRACETREEITEM_HPP
+
+#include <memory>
+
+#include <QPropertyAnimation>
+
+#include "rowitem.hpp"
+
+using std::enable_shared_from_this;
+using std::pair;
+
+namespace pv {
+namespace views {
+namespace trace {
+
+class TraceTreeItemOwner;
+
+class TraceTreeItem : public RowItem,
+ public enable_shared_from_this<TraceTreeItem>
+{
+ Q_OBJECT
+ Q_PROPERTY(int visual_v_offset
+ READ visual_v_offset
+ WRITE set_visual_v_offset)
+
+public:
+ /**
+ * Constructor.
+ */
+ TraceTreeItem();
+
+ /**
+ * Gets the owner of this item in the view item hierachy.
+ */
+ TraceTreeItemOwner* owner() const;
+
+ /**
+ * Selects or deselects the signal.
+ */
+ void select(bool select = true);
+
+ /**
+ * Gets the vertical layout offset of this signal.
+ */
+ int layout_v_offset() const;
+
+ /**
+ * Sets the vertical layout offset of this signal.
+ */
+ void set_layout_v_offset(int v_offset);
+
+ /**
+ * Gets the vertical visual offset of this signal.
+ */
+ int visual_v_offset() const;
+
+ /**
+ * Sets the vertical visual offset of this signal.
+ */
+ void set_visual_v_offset(int v_offset);
+
+ /**
+ * Sets the visual and layout offset of this signal.
+ */
+ void force_to_v_offset(int v_offset);
+
+ /**
+ * Begins an animation that will animate the visual offset toward
+ * the layout offset.
+ */
+ void animate_to_layout_v_offset();
+
+ /**
+ * Sets the owner this trace in the view trace hierachy.
+ * @param The new owner of the trace.
+ */
+ void set_owner(TraceTreeItemOwner *owner);
+
+ /**
+ * Gets the visual y-offset of the axis.
+ */
+ int get_visual_y() const;
+
+ /**
+ * 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);
+
+ /**
+ * Gets the arrow-tip point of the row item marker.
+ * @param rect the rectangle of the header area.
+ */
+ QPoint point(const QRect &rect) const;
+
+ /**
+ * Computes the vertical extents of the contents of this row item.
+ * @return A pair containing the minimum and maximum y-values.
+ */
+ virtual pair<int, int> v_extents() const = 0;
+
+protected:
+ TraceTreeItemOwner *owner_;
+
+ int layout_v_offset_;
+ int visual_v_offset_;
+
+private:
+ QPropertyAnimation v_offset_animation_;
+};
+
+} // namespace trace
+} // namespace views
+} // namespace pv
+
+#endif // PULSEVIEW_PV_VIEWS_TRACEVIEW_TRACETREEITEM_HPP