Use a separate widget to hold the cursor labels.

[pulseview.git] / pv / view / cursorheader.h

/*
 * This file is part of the PulseView project.
 *
 * Copyright (C) 2012 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, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
 */

#ifndef PULSEVIEW_PV_VIEW_CURSORHEADER_H
#define PULSEVIEW_PV_VIEW_CURSORHEADER_H

#include <memory>

#include "marginwidget.h"

namespace pv {
namespace view {

class TimeMarker;

/**
 * Widget to hold the labels over the cursors.
 */
class CursorHeader : public MarginWidget
{
	Q_OBJECT

public:
	CursorHeader(View &parent);

	QSize sizeHint() const;

	void clear_selection();

private:
	void paintEvent(QPaintEvent *event);

	void mouseMoveEvent(QMouseEvent *e);
	void mousePressEvent(QMouseEvent *e);
	void mouseReleaseEvent(QMouseEvent *);

	static const int CursorHeaderHeight;

	std::weak_ptr<TimeMarker> _grabbed_marker;
	QPoint _mouse_down_point;
	bool _dragging;
};

} // namespace view
} // namespace pv

#endif // PULSEVIEW_PV_VIEW_CURSORHEADER_H