[pulseview.git] / pv / view / cursor.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_CURSOR_H
#define PULSEVIEW_PV_VIEW_CURSOR_H

#include "timemarker.h"

#include <memory>

#include <QSizeF>

class QPainter;

namespace pv {
namespace view {

class Cursor : public TimeMarker
{
	Q_OBJECT

public:
	static const QColor LineColour;
	static const QColor FillColour;
	static const QColor HighlightColour;
	static const QColor TextColour;

	static const int Offset;

	static const int ArrowSize;

public:
	/**
	 * Constructor.
	 * @param view A reference to the view that owns this cursor pair.
	 * @param time The time to set the flag to.
	 */
	Cursor(View &view, double time);

public:
	/**
	 * Gets the marker label rectangle.
	 * @param rect The rectangle of the ruler client area.
	 * @return Returns the label rectangle.
	 */
	QRectF get_label_rect(const QRect &rect) const;

	/**
	 * Paints the cursor's label to the ruler.
	 * @param p The painter to draw with.
	 * @param rect The rectangle of the ruler client area.
	 * @param prefix The index of the SI prefix to use.
	 */
	void paint_label(QPainter &p, const QRect &rect,
		unsigned int prefix);

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

	std::shared_ptr<Cursor> get_other_cursor() const;

private:
	QSizeF _text_size;
};

} // namespace view
} // namespace pv

#endif // PULSEVIEW_PV_VIEW_CURSOR_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_CURSOR_H
	22	#define PULSEVIEW_PV_VIEW_CURSOR_H
	23
	24	#include "timemarker.h"
	25
	26	#include <memory>
	27
	28	#include <QSizeF>
	29
	30	class QPainter;
	31
	32	namespace pv {
	33	namespace view {
	34
	35	class Cursor : public TimeMarker
	36	{
	37	Q_OBJECT
	38
	39	public:
	40	static const QColor LineColour;
	41	static const QColor FillColour;
	42	static const QColor HighlightColour;
	43	static const QColor TextColour;
	44
	45	static const int Offset;
	46
	47	static const int ArrowSize;
	48
	49	public:
	50	/**
	51	* Constructor.
	52	* @param view A reference to the view that owns this cursor pair.
	53	* @param time The time to set the flag to.
	54	*/
	55	Cursor(View &view, double time);
	56
	57	public:
	58	/**
	59	* Gets the marker label rectangle.
	60	* @param rect The rectangle of the ruler client area.
	61	* @return Returns the label rectangle.
	62	*/
	63	QRectF get_label_rect(const QRect &rect) const;
	64
	65	/**
	66	* Paints the cursor's label to the ruler.
	67	* @param p The painter to draw with.
	68	* @param rect The rectangle of the ruler client area.
	69	* @param prefix The index of the SI prefix to use.
	70	*/
	71	void paint_label(QPainter &p, const QRect &rect,
	72	unsigned int prefix);
	73
	74	private:
	75	void compute_text_size(QPainter &p, unsigned int prefix);
	76
	77	std::shared_ptr<Cursor> get_other_cursor() const;
	78
	79	private:
	80	QSizeF _text_size;
	81	};
	82
	83	} // namespace view
	84	} // namespace pv
	85
	86	#endif // PULSEVIEW_PV_VIEW_CURSOR_H