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

/*
 * 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
 */

#ifdef ENABLE_DECODE
#include <libsigrokdecode/libsigrokdecode.h>
#endif

#include <assert.h>
#include <limits.h>
#include <math.h>

#include <QEvent>
#include <QMouseEvent>
#include <QScrollBar>

#include "cursorheader.h"
#include "decodetrace.h"
#include "header.h"
#include "ruler.h"
#include "signal.h"
#include "view.h"
#include "viewport.h"

#include "pv/sigsession.h"
#include "pv/data/logic.h"
#include "pv/data/logicsnapshot.h"

using pv::data::SignalData;
using std::back_inserter;
using std::deque;
using std::list;
using std::max;
using std::make_pair;
using std::min;
using std::pair;
using std::set;
using std::shared_ptr;
using std::vector;
using std::weak_ptr;

namespace pv {
namespace view {

const double View::MaxScale = 1e9;
const double View::MinScale = 1e-15;

const int View::MaxScrollValue = INT_MAX / 2;

const int View::SignalHeight = 30;
const int View::SignalMargin = 10;
const int View::SignalSnapGridSize = 10;

const QColor View::CursorAreaColour(220, 231, 243);

const QSizeF View::LabelPadding(4, 0);

View::View(SigSession &session, QWidget *parent) :
	QAbstractScrollArea(parent),
	_session(session),
	_viewport(new Viewport(*this)),
	_ruler(new Ruler(*this)),
	_cursorheader(new CursorHeader(*this)),
	_header(new Header(*this)),
	_scale(1e-6),
	_offset(0),
	_v_offset(0),
	_updating_scroll(false),
	_show_cursors(false),
	_cursors(*this),
	_hover_point(-1, -1)
{
	connect(horizontalScrollBar(), SIGNAL(valueChanged(int)),
		this, SLOT(h_scroll_value_changed(int)));
	connect(verticalScrollBar(), SIGNAL(valueChanged(int)),
		this, SLOT(v_scroll_value_changed(int)));

	connect(&_session, SIGNAL(signals_changed()),
		this, SLOT(signals_changed()));
	connect(&_session, SIGNAL(capture_state_changed(int)),
		this, SLOT(data_updated()));
	connect(&_session, SIGNAL(data_received()),
		this, SLOT(data_updated()));
	connect(&_session, SIGNAL(frame_ended()),
		this, SLOT(data_updated()));

	connect(_cursors.first().get(), SIGNAL(time_changed()),
		this, SLOT(marker_time_changed()));
	connect(_cursors.second().get(), SIGNAL(time_changed()),
		this, SLOT(marker_time_changed()));

	connect(_header, SIGNAL(geometry_updated()),
		this, SLOT(on_geometry_updated()));
	connect(_header, SIGNAL(signals_moved()),
		this, SLOT(on_signals_moved()));

	connect(_header, SIGNAL(selection_changed()),
		_cursorheader, SLOT(clear_selection()));
	connect(_cursorheader, SIGNAL(selection_changed()),
		_header, SLOT(clear_selection()));

	connect(_header, SIGNAL(selection_changed()),
		this, SIGNAL(selection_changed()));
	connect(_cursorheader, SIGNAL(selection_changed()),
		this, SIGNAL(selection_changed()));

	connect(this, SIGNAL(hover_point_changed()),
		this, SLOT(on_hover_point_changed()));

	setViewport(_viewport);

	_viewport->installEventFilter(this);
	_ruler->installEventFilter(this);
	_cursorheader->installEventFilter(this);
	_header->installEventFilter(this);

	// Trigger the initial event manually. The default device has signals
	// which were created before this object came into being
	signals_changed();

	// make sure the transparent widgets are on the top
	_cursorheader->raise();
	_header->raise();
}

SigSession& View::session()
{
	return _session;
}

const SigSession& View::session() const
{
	return _session;
}

Viewport* View::viewport()
{
	return _viewport;
}

const Viewport* View::viewport() const
{
	return _viewport;
}

double View::scale() const
{
	return _scale;
}

double View::offset() const
{
	return _offset;
}

int View::v_offset() const
{
	return -_v_offset;
}

void View::zoom(double steps)
{
	zoom(steps, _viewport->width() / 2);
}

void View::zoom(double steps, int offset)
{
	set_zoom(_scale * pow(3.0/2.0, -steps), offset);
}

void View::zoom_fit()
{
	const pair<double, double> extents = get_time_extents();
	const double delta = extents.second - extents.first;
	if (delta < 1e-12)
		return;

	assert(_viewport);
	const int w = _viewport->width();
	if (w <= 0)
		return;

	const double scale = max(min(delta / w, MaxScale), MinScale);
	set_scale_offset(scale, extents.first);
}

void View::zoom_one_to_one()
{
	using pv::data::SignalData;

	const vector< shared_ptr<Signal> > sigs(
		session().get_signals());

	// Make a set of all the visible data objects
	set< shared_ptr<SignalData> > visible_data = get_visible_data();
	if (visible_data.empty())
		return;

	double samplerate = 0.0;
	for (const shared_ptr<SignalData> d : visible_data) {
		assert(d);
		samplerate = max(samplerate, d->samplerate());
	}

	if (samplerate == 0.0)
		return;

	assert(_viewport);
	const int w = _viewport->width();
	if (w <= 0)
		return;

	set_zoom(1.0 / samplerate, w / 2);
}

void View::set_scale_offset(double scale, double offset)
{
	_scale = scale;
	_offset = offset;

	update_scroll();
	_ruler->update();
	_cursorheader->update();
	_viewport->update();
	scale_offset_changed();
}

vector< shared_ptr<Trace> > View::get_traces() const
{
	vector< shared_ptr<Trace> > traces;

	const vector< shared_ptr<Signal> > sigs(
		session().get_signals());
	copy(sigs.begin(), sigs.end(), back_inserter(traces));

#ifdef ENABLE_DECODE
	const vector< shared_ptr<DecodeTrace> > decode_sigs(
		session().get_decode_signals());
	copy(decode_sigs.begin(), decode_sigs.end(), back_inserter(traces));
#endif

	stable_sort(traces.begin(), traces.end(),
		[](const shared_ptr<Trace> &a, const shared_ptr<Trace> &b) {
			return a->v_offset() < b->v_offset(); });

	return traces;
}

list<weak_ptr<SelectableItem> > View::selected_items() const
{
	list<weak_ptr<SelectableItem> > items;

	// List the selected signals
	const vector< shared_ptr<Trace> > traces(get_traces());
	for (shared_ptr<Trace> t : traces) {
		assert(t);
		if (t->selected())
			items.push_back(t);
	}

	// List the selected cursors
	if (_cursors.first()->selected())
		items.push_back(_cursors.first());
	if (_cursors.second()->selected())
		items.push_back(_cursors.second());

	return items;
}

set< shared_ptr<SignalData> > View::get_visible_data() const
{
	const vector< shared_ptr<Signal> > sigs(
		session().get_signals());

	// Make a set of all the visible data objects
	set< shared_ptr<SignalData> > visible_data;
	for (const shared_ptr<Signal> sig : sigs)
		if (sig->enabled())
			visible_data.insert(sig->data());

	return visible_data;
}

pair<double, double> View::get_time_extents() const
{
	const set< shared_ptr<SignalData> > visible_data = get_visible_data();
	if (visible_data.empty())
		return make_pair(0.0, 0.0);

	double left_time = DBL_MAX, right_time = DBL_MIN;
	for (const shared_ptr<SignalData> d : visible_data)
	{
		const double start_time = d->get_start_time();
		double samplerate = d->samplerate();
		samplerate = (samplerate <= 0.0) ? 1.0 : samplerate;

		left_time = min(left_time, start_time);
		right_time = max(right_time, start_time +
			d->get_max_sample_count() / samplerate);
	}

	assert(left_time < right_time);
	return make_pair(left_time, right_time);
}

bool View::cursors_shown() const
{
	return _show_cursors;
}

void View::show_cursors(bool show)
{
	_show_cursors = show;
	_cursorheader->update();
	_viewport->update();
}

void View::centre_cursors()
{
	const double time_width = _scale * _viewport->width();
	_cursors.first()->set_time(_offset + time_width * 0.4);
	_cursors.second()->set_time(_offset + time_width * 0.6);
	_cursorheader->update();
	_viewport->update();
}

CursorPair& View::cursors()
{
	return _cursors;
}

const CursorPair& View::cursors() const
{
	return _cursors;
}

const QPoint& View::hover_point() const
{
	return _hover_point;
}

void View::normalize_layout()
{
	const vector< shared_ptr<Trace> > traces(get_traces());

	int v_min = INT_MAX;
	for (const shared_ptr<Trace> t : traces)
		v_min = min(t->v_offset(), v_min);

	const int delta = -min(v_min, 0);
	for (shared_ptr<Trace> t : traces)
		t->set_v_offset(t->v_offset() + delta);

	verticalScrollBar()->setSliderPosition(_v_offset + delta);
	v_scroll_value_changed(verticalScrollBar()->sliderPosition());
}

void View::update_viewport()
{
	assert(_viewport);
	_viewport->update();
}

void View::get_scroll_layout(double &length, double &offset) const
{
	const pair<double, double> extents = get_time_extents();
	length = (extents.second - extents.first) / _scale;
	offset = _offset / _scale;
}

void View::set_zoom(double scale, int offset)
{
	const double cursor_offset = _offset + _scale * offset;
	const double new_scale = max(min(scale, MaxScale), MinScale);
	const double new_offset = cursor_offset - new_scale * offset;
	set_scale_offset(new_scale, new_offset);
}

void View::update_scroll()
{
	assert(_viewport);

	const QSize areaSize = _viewport->size();

	// Set the horizontal scroll bar
	double length = 0, offset = 0;
	get_scroll_layout(length, offset);
	length = max(length - areaSize.width(), 0.0);

	horizontalScrollBar()->setPageStep(areaSize.width() / 2);

	_updating_scroll = true;

	if (length < MaxScrollValue) {
		horizontalScrollBar()->setRange(0, length);
		horizontalScrollBar()->setSliderPosition(offset);
	} else {
		horizontalScrollBar()->setRange(0, MaxScrollValue);
		horizontalScrollBar()->setSliderPosition(
			_offset * MaxScrollValue / (_scale * length));
	}

	_updating_scroll = false;

	// Set the vertical scrollbar
	verticalScrollBar()->setPageStep(areaSize.height());
	verticalScrollBar()->setRange(0,
		_viewport->get_total_height() + SignalMargin -
		areaSize.height());
}

void View::update_layout()
{
	setViewportMargins(
		_header->sizeHint().width() - pv::view::Header::BaselineOffset,
		_ruler->sizeHint().height(), 0, 0);
	_ruler->setGeometry(_viewport->x(), 0,
		_viewport->width(), _viewport->y());
	_cursorheader->setGeometry(
		_viewport->x(),
		_ruler->sizeHint().height() - _cursorheader->sizeHint().height() / 2,
		_viewport->width(), _cursorheader->sizeHint().height());
	_header->setGeometry(0, _viewport->y(),
		_header->sizeHint().width(), _viewport->height());
	update_scroll();
}

bool View::eventFilter(QObject *object, QEvent *event)
{
	const QEvent::Type type = event->type();
	if (type == QEvent::MouseMove) {

		const QMouseEvent *const mouse_event = (QMouseEvent*)event;
		if (object == _viewport)
			_hover_point = mouse_event->pos();
		else if (object == _ruler || object == _cursorheader)
			_hover_point = QPoint(mouse_event->x(), 0);
		else if (object == _header)
			_hover_point = QPoint(0, mouse_event->y());
		else
			_hover_point = QPoint(-1, -1);

		hover_point_changed();

	} else if (type == QEvent::Leave) {
		_hover_point = QPoint(-1, -1);
		hover_point_changed();
	}

	return QObject::eventFilter(object, event);
}

bool View::viewportEvent(QEvent *e)
{
	switch(e->type()) {
	case QEvent::Paint:
	case QEvent::MouseButtonPress:
	case QEvent::MouseButtonRelease:
	case QEvent::MouseButtonDblClick:
	case QEvent::MouseMove:
	case QEvent::Wheel:
	case QEvent::TouchBegin:
	case QEvent::TouchUpdate:
	case QEvent::TouchEnd:
		return false;

	default:
		return QAbstractScrollArea::viewportEvent(e);
	}
}

void View::resizeEvent(QResizeEvent*)
{
	update_layout();
}

void View::h_scroll_value_changed(int value)
{
	if (_updating_scroll)
		return;

	const int range = horizontalScrollBar()->maximum();
	if (range < MaxScrollValue)
		_offset = _scale * value;
	else {
		double length = 0, offset;
		get_scroll_layout(length, offset);
		_offset = _scale * length * value / MaxScrollValue;
	}

	_ruler->update();
	_cursorheader->update();
	_viewport->update();
}

void View::v_scroll_value_changed(int value)
{
	_v_offset = value;
	_header->update();
	_viewport->update();
}

void View::signals_changed()
{
	int offset = SignalMargin + SignalHeight;
	const vector< shared_ptr<Trace> > traces(get_traces());
	for (shared_ptr<Trace> t : traces) {
		t->set_view(this);
		t->set_v_offset(offset);
		offset += SignalHeight + 2 * SignalMargin;
	}

	update_layout();
	normalize_layout();
}

void View::data_updated()
{
	// Update the scroll bars
	update_scroll();

	// Repaint the view
	_viewport->update();
}

void View::marker_time_changed()
{
	_cursorheader->update();
	_viewport->update();
}

void View::on_signals_moved()
{
	update_scroll();
	signals_moved();
}

void View::on_geometry_updated()
{
	update_layout();
}

void View::on_hover_point_changed()
{
	const vector< shared_ptr<Trace> > traces(get_traces());
	for (shared_ptr<Trace> t : traces)
		t->hover_point_changed();
}

} // namespace view
} // namespace pv
Commit	Line	Data
adb4b10c	1	/*
b3f22de0	2	* This file is part of the PulseView project.
adb4b10c JH	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
269528f5	21	#ifdef ENABLE_DECODE
4e5a4405	22	#include <libsigrokdecode/libsigrokdecode.h>
269528f5	23	#endif
4e5a4405	24
adb4b10c	25	#include <assert.h>
f25770e2	26	#include <limits.h>
adb4b10c JH	27	#include <math.h>
adb4b10c JH	28
adb4b10c	29	#include <QEvent>
cbd80f64	30	#include <QMouseEvent>
adb4b10c JH	31	#include <QScrollBar>
adb4b10c JH	32
84a0d458	33	#include "cursorheader.h"
b9329558	34	#include "decodetrace.h"
1d8dca91	35	#include "header.h"
ccdd3ef5	36	#include "ruler.h"
2e575351	37	#include "signal.h"
cdf7bea7 JH	38	#include "view.h"
cdf7bea7 JH	39	#include "viewport.h"
adb4b10c	40
1b1ec774 JH	41	#include "pv/sigsession.h"
	42	#include "pv/data/logic.h"
	43	#include "pv/data/logicsnapshot.h"
adb4b10c	44
1bc6525b	45	using pv::data::SignalData;
a2321722	46	using std::back_inserter;
819f4c25 JH	47	using std::deque;
	48	using std::list;
	49	using std::max;
1bc6525b	50	using std::make_pair;
819f4c25	51	using std::min;
1bc6525b	52	using std::pair;
819f4c25	53	using std::set;
f9abf97e	54	using std::shared_ptr;
819f4c25	55	using std::vector;
f9abf97e	56	using std::weak_ptr;
adb4b10c	57
cdf7bea7 JH	58	namespace pv {
cdf7bea7 JH	59	namespace view {
adb4b10c	60
cdf7bea7 JH	61	const double View::MaxScale = 1e9;
cdf7bea7 JH	62	const double View::MinScale = 1e-15;
adb4b10c	63
f25770e2 JH	64	const int View::MaxScrollValue = INT_MAX / 2;
f25770e2 JH	65
8d44d030 JH	66	const int View::SignalHeight = 30;
8d44d030 JH	67	const int View::SignalMargin = 10;
49153683	68	const int View::SignalSnapGridSize = 10;
1d8dca91	69
f76af637 JH	70	const QColor View::CursorAreaColour(220, 231, 243);
f76af637 JH	71
2e04f9bd JH	72	const QSizeF View::LabelPadding(4, 0);
2e04f9bd JH	73
cdf7bea7	74	View::View(SigSession &session, QWidget *parent) :
adb4b10c JH	75	QAbstractScrollArea(parent),
adb4b10c JH	76	_session(session),
cdf7bea7	77	_viewport(new Viewport(*this)),
ccdd3ef5	78	_ruler(new Ruler(*this)),
84a0d458	79	_cursorheader(new CursorHeader(*this)),
1d8dca91	80	_header(new Header(*this)),
adb4b10c JH	81	_scale(1e-6),
adb4b10c JH	82	_offset(0),
cbd80f64	83	_v_offset(0),
528bd8a1	84	_updating_scroll(false),
f76af637	85	_show_cursors(false),
b42d25c4	86	_cursors(*this),
cbd80f64	87	_hover_point(-1, -1)
adb4b10c	88	{
b16907d3 JH	89	connect(horizontalScrollBar(), SIGNAL(valueChanged(int)),
b16907d3 JH	90	this, SLOT(h_scroll_value_changed(int)));
adb4b10c JH	91	connect(verticalScrollBar(), SIGNAL(valueChanged(int)),
adb4b10c JH	92	this, SLOT(v_scroll_value_changed(int)));
69dd2b03 JH	93
	94	connect(&_session, SIGNAL(signals_changed()),
	95	this, SLOT(signals_changed()));
50f97924 PZ	96	connect(&_session, SIGNAL(capture_state_changed(int)),
50f97924 PZ	97	this, SLOT(data_updated()));
1f374035 JH	98	connect(&_session, SIGNAL(data_received()),
	99	this, SLOT(data_updated()));
	100	connect(&_session, SIGNAL(frame_ended()),
adb4b10c	101	this, SLOT(data_updated()));
1d8dca91	102
58864c5c	103	connect(_cursors.first().get(), SIGNAL(time_changed()),
ca4ec3ea	104	this, SLOT(marker_time_changed()));
58864c5c	105	connect(_cursors.second().get(), SIGNAL(time_changed()),
ca4ec3ea JH	106	this, SLOT(marker_time_changed()));
ca4ec3ea JH	107
d7c0ca4a JH	108	connect(_header, SIGNAL(geometry_updated()),
d7c0ca4a JH	109	this, SLOT(on_geometry_updated()));
54401bbb	110	connect(_header, SIGNAL(signals_moved()),
07204819	111	this, SLOT(on_signals_moved()));
54401bbb	112
17348f85	113	connect(_header, SIGNAL(selection_changed()),
84a0d458 JS	114	_cursorheader, SLOT(clear_selection()));
84a0d458 JS	115	connect(_cursorheader, SIGNAL(selection_changed()),
17348f85 JH	116	_header, SLOT(clear_selection()));
17348f85 JH	117
8b454527 JH	118	connect(_header, SIGNAL(selection_changed()),
8b454527 JH	119	this, SIGNAL(selection_changed()));
84a0d458	120	connect(_cursorheader, SIGNAL(selection_changed()),
8b454527 JH	121	this, SIGNAL(selection_changed()));
8b454527 JH	122
33c62f44 JH	123	connect(this, SIGNAL(hover_point_changed()),
	124	this, SLOT(on_hover_point_changed()));
	125
adb4b10c	126	setViewport(_viewport);
cbd80f64 JH	127
	128	_viewport->installEventFilter(this);
	129	_ruler->installEventFilter(this);
84a0d458	130	_cursorheader->installEventFilter(this);
cbd80f64	131	_header->installEventFilter(this);
d873f4d6	132
9f46d905 JH	133	// Trigger the initial event manually. The default device has signals
9f46d905 JH	134	// which were created before this object came into being
d873f4d6	135	signals_changed();
84a0d458	136
512bfc56	137	// make sure the transparent widgets are on the top
84a0d458	138	_cursorheader->raise();
512bfc56	139	_header->raise();
adb4b10c JH	140	}
adb4b10c JH	141
1d19ef83 JH	142	SigSession& View::session()
	143	{
	144	return _session;
	145	}
	146
38eeddea JH	147	const SigSession& View::session() const
	148	{
	149	return _session;
	150	}
	151
2ae445ba SA	152	Viewport* View::viewport()
	153	{
	154	return _viewport;
	155	}
	156
	157	const Viewport* View::viewport() const
	158	{
	159	return _viewport;
	160	}
	161
cdf7bea7	162	double View::scale() const
adb4b10c JH	163	{
	164	return _scale;
	165	}
	166
cdf7bea7	167	double View::offset() const
adb4b10c JH	168	{
	169	return _offset;
	170	}
	171
cdf7bea7	172	int View::v_offset() const
adb4b10c	173	{
23935421	174	return -_v_offset;
adb4b10c JH	175	}
adb4b10c JH	176
cdf7bea7	177	void View::zoom(double steps)
adb4b10c	178	{
f3f98f8f	179	zoom(steps, _viewport->width() / 2);
adb4b10c JH	180	}
adb4b10c JH	181
17c0f398 JH	182	void View::zoom(double steps, int offset)
17c0f398 JH	183	{
8b2e2a9a	184	set_zoom(_scale * pow(3.0/2.0, -steps), offset);
17c0f398 JH	185	}
17c0f398 JH	186
ca46b534 JH	187	void View::zoom_fit()
ca46b534 JH	188	{
1bc6525b JH	189	const pair<double, double> extents = get_time_extents();
	190	const double delta = extents.second - extents.first;
	191	if (delta < 1e-12)
ca46b534 JH	192	return;
	193
	194	assert(_viewport);
	195	const int w = _viewport->width();
	196	if (w <= 0)
	197	return;
	198
78311127 JH	199	const double scale = max(min(delta / w, MaxScale), MinScale);
78311127 JH	200	set_scale_offset(scale, extents.first);
ca46b534 JH	201	}
ca46b534 JH	202
d1e7d82c JH	203	void View::zoom_one_to_one()
	204	{
	205	using pv::data::SignalData;
	206
	207	const vector< shared_ptr<Signal> > sigs(
	208	session().get_signals());
	209
	210	// Make a set of all the visible data objects
0fc664a9	211	set< shared_ptr<SignalData> > visible_data = get_visible_data();
d1e7d82c JH	212	if (visible_data.empty())
	213	return;
	214
	215	double samplerate = 0.0;
d9aecf1f	216	for (const shared_ptr<SignalData> d : visible_data) {
d1e7d82c JH	217	assert(d);
	218	samplerate = max(samplerate, d->samplerate());
	219	}
	220
	221	if (samplerate == 0.0)
	222	return;
	223
	224	assert(_viewport);
	225	const int w = _viewport->width();
	226	if (w <= 0)
	227	return;
	228
	229	set_zoom(1.0 / samplerate, w / 2);
	230	}
	231
cdf7bea7	232	void View::set_scale_offset(double scale, double offset)
adb4b10c JH	233	{
	234	_scale = scale;
	235	_offset = offset;
ccdd3ef5	236
adb4b10c	237	update_scroll();
ccdd3ef5	238	_ruler->update();
84a0d458	239	_cursorheader->update();
adb4b10c	240	_viewport->update();
e0fc5810	241	scale_offset_changed();
adb4b10c JH	242	}
adb4b10c JH	243
38eeddea JH	244	vector< shared_ptr<Trace> > View::get_traces() const
38eeddea JH	245	{
a2321722 JH	246	vector< shared_ptr<Trace> > traces;
a2321722 JH	247
38eeddea JH	248	const vector< shared_ptr<Signal> > sigs(
38eeddea JH	249	session().get_signals());
a2321722 JH	250	copy(sigs.begin(), sigs.end(), back_inserter(traces));
a2321722 JH	251
269528f5	252	#ifdef ENABLE_DECODE
b9329558	253	const vector< shared_ptr<DecodeTrace> > decode_sigs(
38eeddea	254	session().get_decode_signals());
a2321722	255	copy(decode_sigs.begin(), decode_sigs.end(), back_inserter(traces));
269528f5	256	#endif
38eeddea	257
2c25d912 JH	258	stable_sort(traces.begin(), traces.end(),
2c25d912 JH	259	[](const shared_ptr<Trace> &a, const shared_ptr<Trace> &b) {
1ef49ddd	260	return a->v_offset() < b->v_offset(); });
2c25d912	261
38eeddea JH	262	return traces;
	263	}
	264
94936133 JH	265	list<weak_ptr<SelectableItem> > View::selected_items() const
	266	{
	267	list<weak_ptr<SelectableItem> > items;
	268
	269	// List the selected signals
38eeddea	270	const vector< shared_ptr<Trace> > traces(get_traces());
d9aecf1f	271	for (shared_ptr<Trace> t : traces) {
38eeddea JH	272	assert(t);
	273	if (t->selected())
	274	items.push_back(t);
94936133 JH	275	}
	276
	277	// List the selected cursors
	278	if (_cursors.first()->selected())
	279	items.push_back(_cursors.first());
	280	if (_cursors.second()->selected())
	281	items.push_back(_cursors.second());
	282
	283	return items;
	284	}
	285
1bc6525b JH	286	set< shared_ptr<SignalData> > View::get_visible_data() const
	287	{
	288	const vector< shared_ptr<Signal> > sigs(
	289	session().get_signals());
	290
	291	// Make a set of all the visible data objects
	292	set< shared_ptr<SignalData> > visible_data;
d9aecf1f	293	for (const shared_ptr<Signal> sig : sigs)
1bc6525b JH	294	if (sig->enabled())
	295	visible_data.insert(sig->data());
	296
	297	return visible_data;
	298	}
	299
	300	pair<double, double> View::get_time_extents() const
	301	{
	302	const set< shared_ptr<SignalData> > visible_data = get_visible_data();
	303	if (visible_data.empty())
	304	return make_pair(0.0, 0.0);
	305
	306	double left_time = DBL_MAX, right_time = DBL_MIN;
d9aecf1f	307	for (const shared_ptr<SignalData> d : visible_data)
1bc6525b JH	308	{
1bc6525b JH	309	const double start_time = d->get_start_time();
a472a884 JH	310	double samplerate = d->samplerate();
	311	samplerate = (samplerate <= 0.0) ? 1.0 : samplerate;
	312
1bc6525b JH	313	left_time = min(left_time, start_time);
1bc6525b JH	314	right_time = max(right_time, start_time +
a472a884	315	d->get_max_sample_count() / samplerate);
1bc6525b JH	316	}
	317
	318	assert(left_time < right_time);
	319	return make_pair(left_time, right_time);
	320	}
	321
f76af637 JH	322	bool View::cursors_shown() const
	323	{
	324	return _show_cursors;
	325	}
	326
	327	void View::show_cursors(bool show)
	328	{
	329	_show_cursors = show;
84a0d458	330	_cursorheader->update();
f76af637 JH	331	_viewport->update();
	332	}
	333
b4d91e56 JH	334	void View::centre_cursors()
	335	{
	336	const double time_width = _scale * _viewport->width();
58864c5c JH	337	_cursors.first()->set_time(_offset + time_width * 0.4);
58864c5c JH	338	_cursors.second()->set_time(_offset + time_width * 0.6);
84a0d458	339	_cursorheader->update();
b4d91e56 JH	340	_viewport->update();
	341	}
	342
b42d25c4	343	CursorPair& View::cursors()
f76af637 JH	344	{
	345	return _cursors;
	346	}
	347
58864c5c JH	348	const CursorPair& View::cursors() const
	349	{
	350	return _cursors;
	351	}
	352
cbd80f64 JH	353	const QPoint& View::hover_point() const
	354	{
	355	return _hover_point;
	356	}
	357
4b192962 JH	358	void View::normalize_layout()
4b192962 JH	359	{
38eeddea	360	const vector< shared_ptr<Trace> > traces(get_traces());
4b192962 JH	361
4b192962 JH	362	int v_min = INT_MAX;
d9aecf1f	363	for (const shared_ptr<Trace> t : traces)
1ef49ddd	364	v_min = min(t->v_offset(), v_min);
4b192962 JH	365
4b192962 JH	366	const int delta = -min(v_min, 0);
d9aecf1f	367	for (shared_ptr<Trace> t : traces)
1ef49ddd	368	t->set_v_offset(t->v_offset() + delta);
4b192962 JH	369
	370	verticalScrollBar()->setSliderPosition(_v_offset + delta);
	371	v_scroll_value_changed(verticalScrollBar()->sliderPosition());
	372	}
	373
9cef9567 JH	374	void View::update_viewport()
	375	{
	376	assert(_viewport);
	377	_viewport->update();
	378	}
	379
f25770e2 JH	380	void View::get_scroll_layout(double &length, double &offset) const
f25770e2 JH	381	{
1bc6525b JH	382	const pair<double, double> extents = get_time_extents();
1bc6525b JH	383	length = (extents.second - extents.first) / _scale;
f25770e2 JH	384	offset = _offset / _scale;
	385	}
	386
d1e7d82c JH	387	void View::set_zoom(double scale, int offset)
	388	{
	389	const double cursor_offset = _offset + _scale * offset;
	390	const double new_scale = max(min(scale, MaxScale), MinScale);
	391	const double new_offset = cursor_offset - new_scale * offset;
	392	set_scale_offset(new_scale, new_offset);
	393	}
	394
cdf7bea7	395	void View::update_scroll()
adb4b10c JH	396	{
	397	assert(_viewport);
	398
	399	const QSize areaSize = _viewport->size();
	400
	401	// Set the horizontal scroll bar
	402	double length = 0, offset = 0;
f25770e2 JH	403	get_scroll_layout(length, offset);
f25770e2 JH	404	length = max(length - areaSize.width(), 0.0);
adb4b10c	405
b4ef7f2a	406	horizontalScrollBar()->setPageStep(areaSize.width() / 2);
f25770e2	407
528bd8a1 JH	408	_updating_scroll = true;
528bd8a1 JH	409
333d5bbc	410	if (length < MaxScrollValue) {
f25770e2 JH	411	horizontalScrollBar()->setRange(0, length);
	412	horizontalScrollBar()->setSliderPosition(offset);
	413	} else {
	414	horizontalScrollBar()->setRange(0, MaxScrollValue);
	415	horizontalScrollBar()->setSliderPosition(
	416	_offset * MaxScrollValue / (_scale * length));
	417	}
adb4b10c	418
528bd8a1 JH	419	_updating_scroll = false;
528bd8a1 JH	420
adb4b10c JH	421	// Set the vertical scrollbar
	422	verticalScrollBar()->setPageStep(areaSize.height());
	423	verticalScrollBar()->setRange(0,
4b192962 JH	424	_viewport->get_total_height() + SignalMargin -
4b192962 JH	425	areaSize.height());
adb4b10c JH	426	}
adb4b10c JH	427
d7c0ca4a JH	428	void View::update_layout()
d7c0ca4a JH	429	{
512bfc56 JS	430	setViewportMargins(
512bfc56 JS	431	_header->sizeHint().width() - pv::view::Header::BaselineOffset,
a6c1726e	432	_ruler->sizeHint().height(), 0, 0);
d7c0ca4a JH	433	_ruler->setGeometry(_viewport->x(), 0,
d7c0ca4a JH	434	_viewport->width(), _viewport->y());
84a0d458 JS	435	_cursorheader->setGeometry(
	436	_viewport->x(),
	437	_ruler->sizeHint().height() - _cursorheader->sizeHint().height() / 2,
	438	_viewport->width(), _cursorheader->sizeHint().height());
d7c0ca4a	439	_header->setGeometry(0, _viewport->y(),
512bfc56	440	_header->sizeHint().width(), _viewport->height());
d7c0ca4a JH	441	update_scroll();
	442	}
	443
cbd80f64 JH	444	bool View::eventFilter(QObject object, QEvent event)
	445	{
	446	const QEvent::Type type = event->type();
333d5bbc	447	if (type == QEvent::MouseMove) {
cbd80f64 JH	448
cbd80f64 JH	449	const QMouseEvent const mouse_event = (QMouseEvent)event;
333d5bbc	450	if (object == _viewport)
cbd80f64	451	_hover_point = mouse_event->pos();
84a0d458	452	else if (object == _ruler \|\| object == _cursorheader)
cbd80f64	453	_hover_point = QPoint(mouse_event->x(), 0);
333d5bbc	454	else if (object == _header)
cbd80f64 JH	455	_hover_point = QPoint(0, mouse_event->y());
	456	else
	457	_hover_point = QPoint(-1, -1);
	458
	459	hover_point_changed();
	460
333d5bbc	461	} else if (type == QEvent::Leave) {
cbd80f64 JH	462	_hover_point = QPoint(-1, -1);
	463	hover_point_changed();
	464	}
	465
	466	return QObject::eventFilter(object, event);
	467	}
	468
cdf7bea7	469	bool View::viewportEvent(QEvent *e)
adb4b10c JH	470	{
	471	switch(e->type()) {
	472	case QEvent::Paint:
	473	case QEvent::MouseButtonPress:
	474	case QEvent::MouseButtonRelease:
	475	case QEvent::MouseButtonDblClick:
	476	case QEvent::MouseMove:
	477	case QEvent::Wheel:
4b4f1c0d MC	478	case QEvent::TouchBegin:
	479	case QEvent::TouchUpdate:
	480	case QEvent::TouchEnd:
adb4b10c JH	481	return false;
	482
	483	default:
	484	return QAbstractScrollArea::viewportEvent(e);
	485	}
	486	}
	487
e314eca4	488	void View::resizeEvent(QResizeEvent*)
adb4b10c	489	{
d7c0ca4a	490	update_layout();
adb4b10c JH	491	}
adb4b10c JH	492
b16907d3	493	void View::h_scroll_value_changed(int value)
adb4b10c	494	{
528bd8a1 JH	495	if (_updating_scroll)
	496	return;
	497
f25770e2	498	const int range = horizontalScrollBar()->maximum();
333d5bbc	499	if (range < MaxScrollValue)
f25770e2 JH	500	_offset = _scale * value;
	501	else {
	502	double length = 0, offset;
	503	get_scroll_layout(length, offset);
	504	_offset = _scale * length * value / MaxScrollValue;
	505	}
	506
ccdd3ef5	507	_ruler->update();
84a0d458	508	_cursorheader->update();
adb4b10c JH	509	_viewport->update();
	510	}
	511
cdf7bea7	512	void View::v_scroll_value_changed(int value)
adb4b10c JH	513	{
adb4b10c JH	514	_v_offset = value;
1d8dca91	515	_header->update();
adb4b10c JH	516	_viewport->update();
	517	}
	518
69dd2b03 JH	519	void View::signals_changed()
69dd2b03 JH	520	{
ef8311a4	521	int offset = SignalMargin + SignalHeight;
01fd3263	522	const vector< shared_ptr<Trace> > traces(get_traces());
d9aecf1f	523	for (shared_ptr<Trace> t : traces) {
01fd3263	524	t->set_view(this);
01fd3263	525	t->set_v_offset(offset);
ef8311a4 JH	526	offset += SignalHeight + 2 * SignalMargin;
	527	}
	528
a6c1726e	529	update_layout();
ef8311a4	530	normalize_layout();
69dd2b03 JH	531	}
69dd2b03 JH	532
cdf7bea7	533	void View::data_updated()
adb4b10c	534	{
adb4b10c JH	535	// Update the scroll bars
	536	update_scroll();
	537
	538	// Repaint the view
	539	_viewport->update();
	540	}
cdf7bea7	541
ca4ec3ea JH	542	void View::marker_time_changed()
ca4ec3ea JH	543	{
84a0d458	544	_cursorheader->update();
ca4ec3ea JH	545	_viewport->update();
	546	}
	547
07204819	548	void View::on_signals_moved()
54401bbb	549	{
07204819 JH	550	update_scroll();
07204819 JH	551	signals_moved();
54401bbb JH	552	}
54401bbb JH	553
d7c0ca4a JH	554	void View::on_geometry_updated()
	555	{
	556	update_layout();
	557	}
	558
33c62f44 JH	559	void View::on_hover_point_changed()
	560	{
	561	const vector< shared_ptr<Trace> > traces(get_traces());
	562	for (shared_ptr<Trace> t : traces)
	563	t->hover_point_changed();
	564	}
	565
cdf7bea7 JH	566	} // namespace view
cdf7bea7 JH	567	} // namespace pv