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

/*
 * 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, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
 */

#ifndef PULSEVIEW_PV_VIEW_CURSORPAIR_H
#define PULSEVIEW_PV_VIEW_CURSORPAIR_H

#include "cursor.h"

#include <QPainter>

class QPainter;

namespace pv {
namespace view {

class CursorPair
{
private:
	static const int DeltaPadding;

public:
	/**
	 * Constructor.
	 * @param view A reference to the view that owns this cursor pair.
	 */
	CursorPair(const View &view);

	/**
	 * Returns a reference to the first cursor.
	 */
	Cursor& first();

	/**
	 * Returns a reference to the first cursor.
	 */
	const Cursor& first() const;

	/**
	 * Returns a reference to the second cursor.
	 */
	Cursor& second();

	/**
	 * Returns a reference to the second cursor.
	 */
	const Cursor& second() const;

public:
	QRectF get_label_rect(const QRect &rect) const;

	void draw_markers(QPainter &p,
		const QRect &rect, unsigned int prefix);

	void draw_viewport_background(QPainter &p, const QRect &rect);

	void draw_viewport_foreground(QPainter &p, const QRect &rect);

	void compute_text_size(QPainter &p, unsigned int prefix);

	std::pair<float, float> get_cursor_offsets() const;

private:
	Cursor _first, _second;
	const View &_view;

	QSizeF _text_size;
};

} // namespace view
} // namespace pv

#endif // PULSEVIEW_PV_VIEW_CURSORPAIR_H
Commit	Line	Data
	1	/*
	2	* This file is part of the PulseView project.
	3	*
	4	* Copyright (C) 2013 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_CURSORPAIR_H
	22	#define PULSEVIEW_PV_VIEW_CURSORPAIR_H
	23
	24	#include "cursor.h"
	25
	26	#include <QPainter>
	27
	28	class QPainter;
	29
	30	namespace pv {
	31	namespace view {
	32
	33	class CursorPair
	34	{
	35	private:
	36	static const int DeltaPadding;
	37
	38	public:
	39	/**
	40	* Constructor.
	41	* @param view A reference to the view that owns this cursor pair.
	42	*/
	43	CursorPair(const View &view);
	44
	45	/**
	46	* Returns a reference to the first cursor.
	47	*/
	48	Cursor& first();
	49
	50	/**
	51	* Returns a reference to the first cursor.
	52	*/
	53	const Cursor& first() const;
	54
	55	/**
	56	* Returns a reference to the second cursor.
	57	*/
	58	Cursor& second();
	59
	60	/**
	61	* Returns a reference to the second cursor.
	62	*/
	63	const Cursor& second() const;
	64
	65	public:
	66	QRectF get_label_rect(const QRect &rect) const;
	67
	68	void draw_markers(QPainter &p,
	69	const QRect &rect, unsigned int prefix);
	70
	71	void draw_viewport_background(QPainter &p, const QRect &rect);
	72
	73	void draw_viewport_foreground(QPainter &p, const QRect &rect);
	74
	75	void compute_text_size(QPainter &p, unsigned int prefix);
	76
	77	std::pair<float, float> get_cursor_offsets() const;
	78
	79	private:
	80	Cursor _first, _second;
	81	const View &_view;
	82
	83	QSizeF _text_size;
	84	};
	85
	86	} // namespace view
	87	} // namespace pv
	88
	89	#endif // PULSEVIEW_PV_VIEW_CURSORPAIR_H