[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::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(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()));

	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;
}

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
{
	const vector< shared_ptr<Signal> > sigs(
		session().get_signals());
#ifdef ENABLE_DECODE
	const vector< shared_ptr<DecodeTrace> > decode_sigs(
		session().get_decode_signals());
	vector< shared_ptr<Trace> > traces(
		sigs.size() + decode_sigs.size());
#else
	vector< shared_ptr<Trace> > traces(sigs.size());
#endif

	auto i = traces.begin();
	i = copy(sigs.begin(), sigs.end(), i);
#ifdef ENABLE_DECODE
	i = copy(decode_sigs.begin(), decode_sigs.end(), i);
#endif

	stable_sort(traces.begin(), traces.end(), compare_trace_v_offsets);
	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->get_v_offset(), v_min);

	const int delta = -min(v_min, 0);
	for (shared_ptr<Trace> t : traces)
		t->set_v_offset(t->get_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::compare_trace_v_offsets(const shared_ptr<Trace> &a,
	const shared_ptr<Trace> &b)
{
	assert(a);
	assert(b);
	return a->get_v_offset() < b->get_v_offset();
}

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();
}

} // 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;
819f4c25 JH	46	using std::deque;
	47	using std::list;
	48	using std::max;
1bc6525b	49	using std::make_pair;
819f4c25	50	using std::min;
1bc6525b	51	using std::pair;
819f4c25	52	using std::set;
f9abf97e	53	using std::shared_ptr;
819f4c25	54	using std::vector;
f9abf97e	55	using std::weak_ptr;
adb4b10c	56
cdf7bea7 JH	57	namespace pv {
cdf7bea7 JH	58	namespace view {
adb4b10c	59
cdf7bea7 JH	60	const double View::MaxScale = 1e9;
cdf7bea7 JH	61	const double View::MinScale = 1e-15;
adb4b10c	62
f25770e2 JH	63	const int View::MaxScrollValue = INT_MAX / 2;
f25770e2 JH	64
8d44d030 JH	65	const int View::SignalHeight = 30;
8d44d030 JH	66	const int View::SignalMargin = 10;
49153683	67	const int View::SignalSnapGridSize = 10;
1d8dca91	68
f76af637 JH	69	const QColor View::CursorAreaColour(220, 231, 243);
f76af637 JH	70
2e04f9bd JH	71	const QSizeF View::LabelPadding(4, 0);
2e04f9bd JH	72
cdf7bea7	73	View::View(SigSession &session, QWidget *parent) :
adb4b10c JH	74	QAbstractScrollArea(parent),
adb4b10c JH	75	_session(session),
cdf7bea7	76	_viewport(new Viewport(*this)),
ccdd3ef5	77	_ruler(new Ruler(*this)),
84a0d458	78	_cursorheader(new CursorHeader(*this)),
1d8dca91	79	_header(new Header(*this)),
adb4b10c JH	80	_scale(1e-6),
adb4b10c JH	81	_offset(0),
cbd80f64	82	_v_offset(0),
528bd8a1	83	_updating_scroll(false),
f76af637	84	_show_cursors(false),
b42d25c4	85	_cursors(*this),
cbd80f64	86	_hover_point(-1, -1)
adb4b10c	87	{
b16907d3 JH	88	connect(horizontalScrollBar(), SIGNAL(valueChanged(int)),
b16907d3 JH	89	this, SLOT(h_scroll_value_changed(int)));
adb4b10c JH	90	connect(verticalScrollBar(), SIGNAL(valueChanged(int)),
adb4b10c JH	91	this, SLOT(v_scroll_value_changed(int)));
69dd2b03 JH	92
	93	connect(&_session, SIGNAL(signals_changed()),
	94	this, SLOT(signals_changed()));
1f374035 JH	95	connect(&_session, SIGNAL(data_received()),
	96	this, SLOT(data_updated()));
	97	connect(&_session, SIGNAL(frame_ended()),
adb4b10c	98	this, SLOT(data_updated()));
1d8dca91	99
58864c5c	100	connect(_cursors.first().get(), SIGNAL(time_changed()),
ca4ec3ea	101	this, SLOT(marker_time_changed()));
58864c5c	102	connect(_cursors.second().get(), SIGNAL(time_changed()),
ca4ec3ea JH	103	this, SLOT(marker_time_changed()));
ca4ec3ea JH	104
d7c0ca4a JH	105	connect(_header, SIGNAL(geometry_updated()),
d7c0ca4a JH	106	this, SLOT(on_geometry_updated()));
54401bbb	107	connect(_header, SIGNAL(signals_moved()),
07204819	108	this, SLOT(on_signals_moved()));
54401bbb	109
17348f85	110	connect(_header, SIGNAL(selection_changed()),
84a0d458 JS	111	_cursorheader, SLOT(clear_selection()));
84a0d458 JS	112	connect(_cursorheader, SIGNAL(selection_changed()),
17348f85 JH	113	_header, SLOT(clear_selection()));
17348f85 JH	114
8b454527 JH	115	connect(_header, SIGNAL(selection_changed()),
8b454527 JH	116	this, SIGNAL(selection_changed()));
84a0d458	117	connect(_cursorheader, SIGNAL(selection_changed()),
8b454527 JH	118	this, SIGNAL(selection_changed()));
8b454527 JH	119
adb4b10c	120	setViewport(_viewport);
cbd80f64 JH	121
	122	_viewport->installEventFilter(this);
	123	_ruler->installEventFilter(this);
84a0d458	124	_cursorheader->installEventFilter(this);
cbd80f64	125	_header->installEventFilter(this);
d873f4d6	126
9f46d905 JH	127	// Trigger the initial event manually. The default device has signals
9f46d905 JH	128	// which were created before this object came into being
d873f4d6	129	signals_changed();
84a0d458	130
512bfc56	131	// make sure the transparent widgets are on the top
84a0d458	132	_cursorheader->raise();
512bfc56	133	_header->raise();
adb4b10c JH	134	}
adb4b10c JH	135
1d19ef83 JH	136	SigSession& View::session()
	137	{
	138	return _session;
	139	}
	140
38eeddea JH	141	const SigSession& View::session() const
	142	{
	143	return _session;
	144	}
	145
cdf7bea7	146	double View::scale() const
adb4b10c JH	147	{
	148	return _scale;
	149	}
	150
cdf7bea7	151	double View::offset() const
adb4b10c JH	152	{
	153	return _offset;
	154	}
	155
cdf7bea7	156	int View::v_offset() const
adb4b10c JH	157	{
	158	return _v_offset;
	159	}
	160
cdf7bea7	161	void View::zoom(double steps)
adb4b10c	162	{
f3f98f8f	163	zoom(steps, _viewport->width() / 2);
adb4b10c JH	164	}
adb4b10c JH	165
17c0f398 JH	166	void View::zoom(double steps, int offset)
17c0f398 JH	167	{
8b2e2a9a	168	set_zoom(_scale * pow(3.0/2.0, -steps), offset);
17c0f398 JH	169	}
17c0f398 JH	170
ca46b534 JH	171	void View::zoom_fit()
ca46b534 JH	172	{
1bc6525b JH	173	const pair<double, double> extents = get_time_extents();
	174	const double delta = extents.second - extents.first;
	175	if (delta < 1e-12)
ca46b534 JH	176	return;
	177
	178	assert(_viewport);
	179	const int w = _viewport->width();
	180	if (w <= 0)
	181	return;
	182
78311127 JH	183	const double scale = max(min(delta / w, MaxScale), MinScale);
78311127 JH	184	set_scale_offset(scale, extents.first);
ca46b534 JH	185	}
ca46b534 JH	186
d1e7d82c JH	187	void View::zoom_one_to_one()
	188	{
	189	using pv::data::SignalData;
	190
	191	const vector< shared_ptr<Signal> > sigs(
	192	session().get_signals());
	193
	194	// Make a set of all the visible data objects
0fc664a9	195	set< shared_ptr<SignalData> > visible_data = get_visible_data();
d1e7d82c JH	196	if (visible_data.empty())
	197	return;
	198
	199	double samplerate = 0.0;
d9aecf1f	200	for (const shared_ptr<SignalData> d : visible_data) {
d1e7d82c JH	201	assert(d);
	202	samplerate = max(samplerate, d->samplerate());
	203	}
	204
	205	if (samplerate == 0.0)
	206	return;
	207
	208	assert(_viewport);
	209	const int w = _viewport->width();
	210	if (w <= 0)
	211	return;
	212
	213	set_zoom(1.0 / samplerate, w / 2);
	214	}
	215
cdf7bea7	216	void View::set_scale_offset(double scale, double offset)
adb4b10c JH	217	{
	218	_scale = scale;
	219	_offset = offset;
ccdd3ef5	220
adb4b10c	221	update_scroll();
ccdd3ef5	222	_ruler->update();
84a0d458	223	_cursorheader->update();
adb4b10c	224	_viewport->update();
e0fc5810	225	scale_offset_changed();
adb4b10c JH	226	}
adb4b10c JH	227
38eeddea JH	228	vector< shared_ptr<Trace> > View::get_traces() const
	229	{
	230	const vector< shared_ptr<Signal> > sigs(
	231	session().get_signals());
269528f5	232	#ifdef ENABLE_DECODE
b9329558	233	const vector< shared_ptr<DecodeTrace> > decode_sigs(
38eeddea JH	234	session().get_decode_signals());
	235	vector< shared_ptr<Trace> > traces(
	236	sigs.size() + decode_sigs.size());
269528f5 JH	237	#else
	238	vector< shared_ptr<Trace> > traces(sigs.size());
	239	#endif
38eeddea	240
f46e495e	241	auto i = traces.begin();
38eeddea	242	i = copy(sigs.begin(), sigs.end(), i);
269528f5	243	#ifdef ENABLE_DECODE
38eeddea	244	i = copy(decode_sigs.begin(), decode_sigs.end(), i);
269528f5	245	#endif
38eeddea	246
9a2bc5fc	247	stable_sort(traces.begin(), traces.end(), compare_trace_v_offsets);
38eeddea JH	248	return traces;
	249	}
	250
94936133 JH	251	list<weak_ptr<SelectableItem> > View::selected_items() const
	252	{
	253	list<weak_ptr<SelectableItem> > items;
	254
	255	// List the selected signals
38eeddea	256	const vector< shared_ptr<Trace> > traces(get_traces());
d9aecf1f	257	for (shared_ptr<Trace> t : traces) {
38eeddea JH	258	assert(t);
	259	if (t->selected())
	260	items.push_back(t);
94936133 JH	261	}
	262
	263	// List the selected cursors
	264	if (_cursors.first()->selected())
	265	items.push_back(_cursors.first());
	266	if (_cursors.second()->selected())
	267	items.push_back(_cursors.second());
	268
	269	return items;
	270	}
	271
1bc6525b JH	272	set< shared_ptr<SignalData> > View::get_visible_data() const
	273	{
	274	const vector< shared_ptr<Signal> > sigs(
	275	session().get_signals());
	276
	277	// Make a set of all the visible data objects
	278	set< shared_ptr<SignalData> > visible_data;
d9aecf1f	279	for (const shared_ptr<Signal> sig : sigs)
1bc6525b JH	280	if (sig->enabled())
	281	visible_data.insert(sig->data());
	282
	283	return visible_data;
	284	}
	285
	286	pair<double, double> View::get_time_extents() const
	287	{
	288	const set< shared_ptr<SignalData> > visible_data = get_visible_data();
	289	if (visible_data.empty())
	290	return make_pair(0.0, 0.0);
	291
	292	double left_time = DBL_MAX, right_time = DBL_MIN;
d9aecf1f	293	for (const shared_ptr<SignalData> d : visible_data)
1bc6525b JH	294	{
1bc6525b JH	295	const double start_time = d->get_start_time();
a472a884 JH	296	double samplerate = d->samplerate();
	297	samplerate = (samplerate <= 0.0) ? 1.0 : samplerate;
	298
1bc6525b JH	299	left_time = min(left_time, start_time);
1bc6525b JH	300	right_time = max(right_time, start_time +
a472a884	301	d->get_max_sample_count() / samplerate);
1bc6525b JH	302	}
	303
	304	assert(left_time < right_time);
	305	return make_pair(left_time, right_time);
	306	}
	307
f76af637 JH	308	bool View::cursors_shown() const
	309	{
	310	return _show_cursors;
	311	}
	312
	313	void View::show_cursors(bool show)
	314	{
	315	_show_cursors = show;
84a0d458	316	_cursorheader->update();
f76af637 JH	317	_viewport->update();
	318	}
	319
b4d91e56 JH	320	void View::centre_cursors()
	321	{
	322	const double time_width = _scale * _viewport->width();
58864c5c JH	323	_cursors.first()->set_time(_offset + time_width * 0.4);
58864c5c JH	324	_cursors.second()->set_time(_offset + time_width * 0.6);
84a0d458	325	_cursorheader->update();
b4d91e56 JH	326	_viewport->update();
	327	}
	328
b42d25c4	329	CursorPair& View::cursors()
f76af637 JH	330	{
	331	return _cursors;
	332	}
	333
58864c5c JH	334	const CursorPair& View::cursors() const
	335	{
	336	return _cursors;
	337	}
	338
cbd80f64 JH	339	const QPoint& View::hover_point() const
	340	{
	341	return _hover_point;
	342	}
	343
4b192962 JH	344	void View::normalize_layout()
4b192962 JH	345	{
38eeddea	346	const vector< shared_ptr<Trace> > traces(get_traces());
4b192962 JH	347
4b192962 JH	348	int v_min = INT_MAX;
d9aecf1f	349	for (const shared_ptr<Trace> t : traces)
38eeddea	350	v_min = min(t->get_v_offset(), v_min);
4b192962 JH	351
4b192962 JH	352	const int delta = -min(v_min, 0);
d9aecf1f	353	for (shared_ptr<Trace> t : traces)
38eeddea	354	t->set_v_offset(t->get_v_offset() + delta);
4b192962 JH	355
	356	verticalScrollBar()->setSliderPosition(_v_offset + delta);
	357	v_scroll_value_changed(verticalScrollBar()->sliderPosition());
	358	}
	359
9cef9567 JH	360	void View::update_viewport()
	361	{
	362	assert(_viewport);
	363	_viewport->update();
	364	}
	365
f25770e2 JH	366	void View::get_scroll_layout(double &length, double &offset) const
f25770e2 JH	367	{
1bc6525b JH	368	const pair<double, double> extents = get_time_extents();
1bc6525b JH	369	length = (extents.second - extents.first) / _scale;
f25770e2 JH	370	offset = _offset / _scale;
	371	}
	372
d1e7d82c JH	373	void View::set_zoom(double scale, int offset)
	374	{
	375	const double cursor_offset = _offset + _scale * offset;
	376	const double new_scale = max(min(scale, MaxScale), MinScale);
	377	const double new_offset = cursor_offset - new_scale * offset;
	378	set_scale_offset(new_scale, new_offset);
	379	}
	380
cdf7bea7	381	void View::update_scroll()
adb4b10c JH	382	{
	383	assert(_viewport);
	384
	385	const QSize areaSize = _viewport->size();
	386
	387	// Set the horizontal scroll bar
	388	double length = 0, offset = 0;
f25770e2 JH	389	get_scroll_layout(length, offset);
f25770e2 JH	390	length = max(length - areaSize.width(), 0.0);
adb4b10c	391
b4ef7f2a	392	horizontalScrollBar()->setPageStep(areaSize.width() / 2);
f25770e2	393
528bd8a1 JH	394	_updating_scroll = true;
528bd8a1 JH	395
333d5bbc	396	if (length < MaxScrollValue) {
f25770e2 JH	397	horizontalScrollBar()->setRange(0, length);
	398	horizontalScrollBar()->setSliderPosition(offset);
	399	} else {
	400	horizontalScrollBar()->setRange(0, MaxScrollValue);
	401	horizontalScrollBar()->setSliderPosition(
	402	_offset * MaxScrollValue / (_scale * length));
	403	}
adb4b10c	404
528bd8a1 JH	405	_updating_scroll = false;
528bd8a1 JH	406
adb4b10c JH	407	// Set the vertical scrollbar
	408	verticalScrollBar()->setPageStep(areaSize.height());
	409	verticalScrollBar()->setRange(0,
4b192962 JH	410	_viewport->get_total_height() + SignalMargin -
4b192962 JH	411	areaSize.height());
adb4b10c JH	412	}
adb4b10c JH	413
d7c0ca4a JH	414	void View::update_layout()
d7c0ca4a JH	415	{
512bfc56 JS	416	setViewportMargins(
512bfc56 JS	417	_header->sizeHint().width() - pv::view::Header::BaselineOffset,
a6c1726e	418	_ruler->sizeHint().height(), 0, 0);
d7c0ca4a JH	419	_ruler->setGeometry(_viewport->x(), 0,
d7c0ca4a JH	420	_viewport->width(), _viewport->y());
84a0d458 JS	421	_cursorheader->setGeometry(
	422	_viewport->x(),
	423	_ruler->sizeHint().height() - _cursorheader->sizeHint().height() / 2,
	424	_viewport->width(), _cursorheader->sizeHint().height());
d7c0ca4a	425	_header->setGeometry(0, _viewport->y(),
512bfc56	426	_header->sizeHint().width(), _viewport->height());
d7c0ca4a JH	427	update_scroll();
	428	}
	429
38eeddea JH	430	bool View::compare_trace_v_offsets(const shared_ptr<Trace> &a,
	431	const shared_ptr<Trace> &b)
	432	{
	433	assert(a);
	434	assert(b);
	435	return a->get_v_offset() < b->get_v_offset();
	436	}
	437
cbd80f64 JH	438	bool View::eventFilter(QObject object, QEvent event)
	439	{
	440	const QEvent::Type type = event->type();
333d5bbc	441	if (type == QEvent::MouseMove) {
cbd80f64 JH	442
cbd80f64 JH	443	const QMouseEvent const mouse_event = (QMouseEvent)event;
333d5bbc	444	if (object == _viewport)
cbd80f64	445	_hover_point = mouse_event->pos();
84a0d458	446	else if (object == _ruler \|\| object == _cursorheader)
cbd80f64	447	_hover_point = QPoint(mouse_event->x(), 0);
333d5bbc	448	else if (object == _header)
cbd80f64 JH	449	_hover_point = QPoint(0, mouse_event->y());
	450	else
	451	_hover_point = QPoint(-1, -1);
	452
	453	hover_point_changed();
	454
333d5bbc	455	} else if (type == QEvent::Leave) {
cbd80f64 JH	456	_hover_point = QPoint(-1, -1);
	457	hover_point_changed();
	458	}
	459
	460	return QObject::eventFilter(object, event);
	461	}
	462
cdf7bea7	463	bool View::viewportEvent(QEvent *e)
adb4b10c JH	464	{
	465	switch(e->type()) {
	466	case QEvent::Paint:
	467	case QEvent::MouseButtonPress:
	468	case QEvent::MouseButtonRelease:
	469	case QEvent::MouseButtonDblClick:
	470	case QEvent::MouseMove:
	471	case QEvent::Wheel:
4b4f1c0d MC	472	case QEvent::TouchBegin:
	473	case QEvent::TouchUpdate:
	474	case QEvent::TouchEnd:
adb4b10c JH	475	return false;
	476
	477	default:
	478	return QAbstractScrollArea::viewportEvent(e);
	479	}
	480	}
	481
e314eca4	482	void View::resizeEvent(QResizeEvent*)
adb4b10c	483	{
d7c0ca4a	484	update_layout();
adb4b10c JH	485	}
adb4b10c JH	486
b16907d3	487	void View::h_scroll_value_changed(int value)
adb4b10c	488	{
528bd8a1 JH	489	if (_updating_scroll)
	490	return;
	491
f25770e2	492	const int range = horizontalScrollBar()->maximum();
333d5bbc	493	if (range < MaxScrollValue)
f25770e2 JH	494	_offset = _scale * value;
	495	else {
	496	double length = 0, offset;
	497	get_scroll_layout(length, offset);
	498	_offset = _scale * length * value / MaxScrollValue;
	499	}
	500
ccdd3ef5	501	_ruler->update();
84a0d458	502	_cursorheader->update();
adb4b10c JH	503	_viewport->update();
	504	}
	505
cdf7bea7	506	void View::v_scroll_value_changed(int value)
adb4b10c JH	507	{
adb4b10c JH	508	_v_offset = value;
1d8dca91	509	_header->update();
adb4b10c JH	510	_viewport->update();
	511	}
	512
69dd2b03 JH	513	void View::signals_changed()
69dd2b03 JH	514	{
ef8311a4	515	int offset = SignalMargin + SignalHeight;
01fd3263	516	const vector< shared_ptr<Trace> > traces(get_traces());
d9aecf1f	517	for (shared_ptr<Trace> t : traces) {
01fd3263	518	t->set_view(this);
01fd3263	519	t->set_v_offset(offset);
ef8311a4 JH	520	offset += SignalHeight + 2 * SignalMargin;
	521	}
	522
a6c1726e	523	update_layout();
ef8311a4	524	normalize_layout();
69dd2b03 JH	525	}
69dd2b03 JH	526
cdf7bea7	527	void View::data_updated()
adb4b10c	528	{
adb4b10c JH	529	// Update the scroll bars
	530	update_scroll();
	531
	532	// Repaint the view
	533	_viewport->update();
	534	}
cdf7bea7	535
ca4ec3ea JH	536	void View::marker_time_changed()
ca4ec3ea JH	537	{
84a0d458	538	_cursorheader->update();
ca4ec3ea JH	539	_viewport->update();
	540	}
	541
07204819	542	void View::on_signals_moved()
54401bbb	543	{
07204819 JH	544	update_scroll();
07204819 JH	545	signals_moved();
54401bbb JH	546	}
54401bbb JH	547
d7c0ca4a JH	548	void View::on_geometry_updated()
	549	{
	550	update_layout();
	551	}
	552
cdf7bea7 JH	553	} // namespace view
cdf7bea7 JH	554	} // namespace pv