[pulseview.git] / pv / view / view.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_VIEW_H
#define PULSEVIEW_PV_VIEW_VIEW_H

#include <stdint.h>

#include <QAbstractScrollArea>

namespace pv {

class SigSession;

namespace view {

class Header;
class Ruler;
class Viewport;

class View : public QAbstractScrollArea {
	Q_OBJECT

private:
	static const double MaxScale;
	static const double MinScale;

	static const int LabelMarginWidth;
	static const int RulerHeight;

	static const int MaxScrollValue;

public:
	static const int SignalHeight;

public:
	explicit View(SigSession &session, QWidget *parent = 0);

	SigSession& session();

	/**
	 * Returns the view time scale in seconds per pixel.
	 */
	double scale() const;

	/**
	 * Returns the time offset of the left edge of the view in
	 * seconds.
	 */
	double offset() const;
	int v_offset() const;

	void zoom(double steps);
	void zoom(double steps, int offset);

	/**
	 * Sets the scale and offset.
	 * @param scale The new view scale in seconds per pixel.
	 * @param offset The view time offset in seconds.
	 */
	void set_scale_offset(double scale, double offset);

	const QPoint& hover_point() const;

signals:
	void hover_point_changed();

private:
	void get_scroll_layout(double &length, double &offset) const;
	
	void update_scroll();

private:
	bool eventFilter(QObject *object, QEvent *event);

	bool viewportEvent(QEvent *e);

	void resizeEvent(QResizeEvent *e);

private slots:

	void h_scroll_value_changed(int value);
	void v_scroll_value_changed(int value);

	void data_updated();

private:
	SigSession &_session;

	Viewport *_viewport;
	Ruler *_ruler;
	Header *_header;

	uint64_t _data_length;

	/// The view time scale in seconds per pixel.
	double _scale;

	/// The view time offset in seconds.
	double _offset;

	int _v_offset;

	QPoint _hover_point;
};

} // namespace view
} // namespace pv

#endif // PULSEVIEW_PV_VIEW_VIEW_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_VIEW_H
	22	#define PULSEVIEW_PV_VIEW_VIEW_H
	23
	24	#include <stdint.h>
	25
	26	#include <QAbstractScrollArea>
	27
	28	namespace pv {
	29
	30	class SigSession;
	31
	32	namespace view {
	33
	34	class Header;
	35	class Ruler;
	36	class Viewport;
	37
	38	class View : public QAbstractScrollArea {
	39	Q_OBJECT
	40
	41	private:
	42	static const double MaxScale;
	43	static const double MinScale;
	44
	45	static const int LabelMarginWidth;
	46	static const int RulerHeight;
	47
	48	static const int MaxScrollValue;
	49
	50	public:
	51	static const int SignalHeight;
	52
	53	public:
	54	explicit View(SigSession &session, QWidget *parent = 0);
	55
	56	SigSession& session();
	57
	58	/**
	59	* Returns the view time scale in seconds per pixel.
	60	*/
	61	double scale() const;
	62
	63	/**
	64	* Returns the time offset of the left edge of the view in
	65	* seconds.
	66	*/
	67	double offset() const;
	68	int v_offset() const;
	69
	70	void zoom(double steps);
	71	void zoom(double steps, int offset);
	72
	73	/**
	74	* Sets the scale and offset.
	75	* @param scale The new view scale in seconds per pixel.
	76	* @param offset The view time offset in seconds.
	77	*/
	78	void set_scale_offset(double scale, double offset);
	79
	80	const QPoint& hover_point() const;
	81
	82	signals:
	83	void hover_point_changed();
	84
	85	private:
	86	void get_scroll_layout(double &length, double &offset) const;
	87
	88	void update_scroll();
	89
	90	private:
	91	bool eventFilter(QObject object, QEvent event);
	92
	93	bool viewportEvent(QEvent *e);
	94
	95	void resizeEvent(QResizeEvent *e);
	96
	97	private slots:
	98
	99	void h_scroll_value_changed(int value);
	100	void v_scroll_value_changed(int value);
	101
	102	void data_updated();
	103
	104	private:
	105	SigSession &_session;
	106
	107	Viewport *_viewport;
	108	Ruler *_ruler;
	109	Header *_header;
	110
	111	uint64_t _data_length;
	112
	113	/// The view time scale in seconds per pixel.
	114	double _scale;
	115
	116	/// The view time offset in seconds.
	117	double _offset;
	118
	119	int _v_offset;
	120
	121	QPoint _hover_point;
	122	};
	123
	124	} // namespace view
	125	} // namespace pv
	126
	127	#endif // PULSEVIEW_PV_VIEW_VIEW_H