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

/*
 * This file is part of the sigrok 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 PV_VIEW_VIEW_H
#define PV_VIEW_VIEW_H

#include <stdint.h>

#include <QAbstractScrollArea>

class SigSession;

namespace pv {
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();

	double scale() const;
	double offset() const;
	int v_offset() const;

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

	void set_scale_offset(double scale, double offset);

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

private:
	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;

	double _scale;
	double _offset;

	int _v_offset;
};

} // namespace view
} // namespace pv

#endif // PV_VIEW_VIEW_H
Commit	Line	Data
	1	/*
	2	* This file is part of the sigrok 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 PV_VIEW_VIEW_H
	22	#define PV_VIEW_VIEW_H
	23
	24	#include <stdint.h>
	25
	26	#include <QAbstractScrollArea>
	27
	28	class SigSession;
	29
	30	namespace pv {
	31	namespace view {
	32
	33	class Header;
	34	class Ruler;
	35	class Viewport;
	36
	37	class View : public QAbstractScrollArea {
	38	Q_OBJECT
	39
	40	private:
	41	static const double MaxScale;
	42	static const double MinScale;
	43
	44	static const int LabelMarginWidth;
	45	static const int RulerHeight;
	46
	47	static const int MaxScrollValue;
	48
	49	public:
	50	static const int SignalHeight;
	51
	52	public:
	53	explicit View(SigSession &session, QWidget *parent = 0);
	54
	55	SigSession& session();
	56
	57	double scale() const;
	58	double offset() const;
	59	int v_offset() const;
	60
	61	void zoom(double steps);
	62	void zoom(double steps, int offset);
	63
	64	void set_scale_offset(double scale, double offset);
	65
	66	private:
	67	void get_scroll_layout(double &length, double &offset) const;
	68
	69	void update_scroll();
	70
	71	private:
	72	bool viewportEvent(QEvent *e);
	73
	74	void resizeEvent(QResizeEvent *e);
	75
	76	private slots:
	77	void h_scroll_value_changed(int value);
	78	void v_scroll_value_changed(int value);
	79
	80	void data_updated();
	81
	82	private:
	83	SigSession &_session;
	84
	85	Viewport *_viewport;
	86	Ruler *_ruler;
	87	Header *_header;
	88
	89	uint64_t _data_length;
	90
	91	double _scale;
	92	double _offset;
	93
	94	int _v_offset;
	95	};
	96
	97	} // namespace view
	98	} // namespace pv
	99
	100	#endif // PV_VIEW_VIEW_H