[pulseview.git] / pv / signal.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_SIGNAL_H
#define PULSEVIEW_PV_SIGNAL_H

#include <boost/shared_ptr.hpp>

#include <QPainter>
#include <QRect>
#include <QString>

#include <stdint.h>

namespace pv {

class SignalData;

class Signal
{
private:
	static const int LabelHitPadding;

protected:
	Signal(QString name);

public:
	/**
	 * Gets the name of this signal.
	 */
	QString get_name() const;

	/**
	 * Sets the name of the signal.
	 */
	void set_name(QString name);

	/**
	 * Paints the signal with a QPainter
	 * @param p the QPainter to paint into.
	 * @param rect the rectangular area to draw the trace into.
	 * @param scale the scale in seconds per pixel.
	 * @param offset the time to show at the left hand edge of
	 *   the view in seconds.
	 **/
	virtual void paint(QPainter &p, const QRect &rect, double scale,
		double offset) = 0;


	/**
	 * Paints the signal label into a QGLWidget.
	 * @param p the QPainter to paint into.
	 * @param rect the rectangular area to draw the label into.
	 * @param hover true if the label is being hovered over by the mouse.
	 */
	virtual void paint_label(QPainter &p, const QRect &rect,
		bool hover);

	/**
	 * Determines if a point is in the header label rect.
	 * @param rect the rectangular area to draw the label into.
	 * @param point the point to test.
	 */
	bool pt_in_label_rect(const QRect &rect, const QPoint &point);

private:

	/**
	 * Computes an caches the size of the label text.
	 */
	void compute_text_size(QPainter &p);

	/**
	 * Computes the outline rectangle of a label.
	 * @param p the QPainter to lay out text with.
	 * @param rect The rectangle of the signal header.
	 * @return Returns the rectangle of the signal label.
	 */
	QRectF get_label_rect(const QRect &rect);

protected:
	/**
	 * Get the colour of the logic signal
	 */
	virtual QColor get_colour() const = 0;

	/**
	 * When painting into the rectangle, calculate the y
	 * offset of the zero point.
	 **/
	virtual int get_nominal_offset(const QRect &rect) const = 0;

protected:
	QString _name;
	QSizeF _text_size;
};

} // namespace pv

#endif // PULSEVIEW_PV_SIGNAL_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_SIGNAL_H
	22	#define PULSEVIEW_PV_SIGNAL_H
	23
	24	#include <boost/shared_ptr.hpp>
	25
	26	#include <QPainter>
	27	#include <QRect>
	28	#include <QString>
	29
	30	#include <stdint.h>
	31
	32	namespace pv {
	33
	34	class SignalData;
	35
	36	class Signal
	37	{
	38	private:
	39	static const int LabelHitPadding;
	40
	41	protected:
	42	Signal(QString name);
	43
	44	public:
	45	/**
	46	* Gets the name of this signal.
	47	*/
	48	QString get_name() const;
	49
	50	/**
	51	* Sets the name of the signal.
	52	*/
	53	void set_name(QString name);
	54
	55	/**
	56	* Paints the signal with a QPainter
	57	* @param p the QPainter to paint into.
	58	* @param rect the rectangular area to draw the trace into.
	59	* @param scale the scale in seconds per pixel.
	60	* @param offset the time to show at the left hand edge of
	61	* the view in seconds.
	62	**/
	63	virtual void paint(QPainter &p, const QRect &rect, double scale,
	64	double offset) = 0;
	65
	66
	67	/**
	68	* Paints the signal label into a QGLWidget.
	69	* @param p the QPainter to paint into.
	70	* @param rect the rectangular area to draw the label into.
	71	* @param hover true if the label is being hovered over by the mouse.
	72	*/
	73	virtual void paint_label(QPainter &p, const QRect &rect,
	74	bool hover);
	75
	76	/**
	77	* Determines if a point is in the header label rect.
	78	* @param rect the rectangular area to draw the label into.
	79	* @param point the point to test.
	80	*/
	81	bool pt_in_label_rect(const QRect &rect, const QPoint &point);
	82
	83	private:
	84
	85	/**
	86	* Computes an caches the size of the label text.
	87	*/
	88	void compute_text_size(QPainter &p);
	89
	90	/**
	91	* Computes the outline rectangle of a label.
	92	* @param p the QPainter to lay out text with.
	93	* @param rect The rectangle of the signal header.
	94	* @return Returns the rectangle of the signal label.
	95	*/
	96	QRectF get_label_rect(const QRect &rect);
	97
	98	protected:
	99	/**
	100	* Get the colour of the logic signal
	101	*/
	102	virtual QColor get_colour() const = 0;
	103
	104	/**
	105	* When painting into the rectangle, calculate the y
	106	* offset of the zero point.
	107	**/
	108	virtual int get_nominal_offset(const QRect &rect) const = 0;
	109
	110	protected:
	111	QString _name;
	112	QSizeF _text_size;
	113	};
	114
	115	} // namespace pv
	116
	117	#endif // PULSEVIEW_PV_SIGNAL_H