[pulseview.git] / pv / view / ruler.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_RULER_H
#define PULSEVIEW_PV_VIEW_RULER_H

#include <boost/weak_ptr.hpp>

#include "marginwidget.h"

namespace pv {
namespace view {

class TimeMarker;
class View;

class Ruler : public MarginWidget
{
	Q_OBJECT

private:
	static const int RulerHeight;
	static const int MinorTickSubdivision;
	static const int ScaleUnits[3];

	static const QString SIPrefixes[9];
	static const int FirstSIPrefixPower;

	static const int HoverArrowSize;

public:
	Ruler(View &parent);

	void clear_selection();

	static QString format_time(double t, unsigned int prefix,
		unsigned precision = 0);

public:
	QSize sizeHint() const;

private:
	void paintEvent(QPaintEvent *event);

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

private:
	/**
	 * Draw a hover arrow under the cursor position.
	 */
	void draw_hover_mark(QPainter &p);

private slots:
	void hover_point_changed();

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

} // namespace view
} // namespace pv

#endif // PULSEVIEW_PV_VIEW_RULER_H
Commit	Line	Data
	1	/*
	2	* This file is part of the PulseView project.
	3	*
	4	* Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; either version 2 of the License, or
	9	* (at your option) any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* along with this program; if not, write to the Free Software
	18	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	19	*/
	20
	21	#ifndef PULSEVIEW_PV_VIEW_RULER_H
	22	#define PULSEVIEW_PV_VIEW_RULER_H
	23
	24	#include <boost/weak_ptr.hpp>
	25
	26	#include "marginwidget.h"
	27
	28	namespace pv {
	29	namespace view {
	30
	31	class TimeMarker;
	32	class View;
	33
	34	class Ruler : public MarginWidget
	35	{
	36	Q_OBJECT
	37
	38	private:
	39	static const int RulerHeight;
	40	static const int MinorTickSubdivision;
	41	static const int ScaleUnits[3];
	42
	43	static const QString SIPrefixes[9];
	44	static const int FirstSIPrefixPower;
	45
	46	static const int HoverArrowSize;
	47
	48	public:
	49	Ruler(View &parent);
	50
	51	void clear_selection();
	52
	53	static QString format_time(double t, unsigned int prefix,
	54	unsigned precision = 0);
	55
	56	public:
	57	QSize sizeHint() const;
	58
	59	private:
	60	void paintEvent(QPaintEvent *event);
	61
	62	void mouseMoveEvent(QMouseEvent *e);
	63	void mousePressEvent(QMouseEvent *e);
	64	void mouseReleaseEvent(QMouseEvent *);
	65
	66	private:
	67	/**
	68	* Draw a hover arrow under the cursor position.
	69	*/
	70	void draw_hover_mark(QPainter &p);
	71
	72	private slots:
	73	void hover_point_changed();
	74
	75	private:
	76	boost::weak_ptr<TimeMarker> _grabbed_marker;
	77	QPoint _mouse_down_point;
	78	bool _dragging;
	79	};
	80
	81	} // namespace view
	82	} // namespace pv
	83
	84	#endif // PULSEVIEW_PV_VIEW_RULER_H