[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 <cassert>
#include <climits>
#include <cmath>
#include <mutex>
#include <unordered_set>

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

#include <libsigrok/libsigrok.hpp>

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

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

using boost::shared_lock;
using boost::shared_mutex;
using pv::data::SignalData;
using std::back_inserter;
using std::deque;
using std::dynamic_pointer_cast;
using std::list;
using std::lock_guard;
using std::max;
using std::make_pair;
using std::min;
using std::pair;
using std::set;
using std::shared_ptr;
using std::unordered_map;
using std::unordered_set;
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 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(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()));

	connect(&_lazy_event_handler, SIGNAL(timeout()),
		this, SLOT(process_sticky_events()));
	_lazy_event_handler.setSingleShot(true);

	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;
}

View* View::view()
{
	return this;
}

const View* View::view() const
{
	return this;
}

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::owner_visual_v_offset() const
{
	return -_v_offset;
}

unsigned int View::depth() const
{
	return 0;
}

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;

	// 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();
}

set< shared_ptr<SignalData> > View::get_visible_data() const
{
	shared_lock<shared_mutex> lock(session().signals_mutex());
	const vector< shared_ptr<Signal> > &sigs(session().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::update_viewport()
{
	assert(_viewport);
	_viewport->update();
	_header->update();
}

void View::restack_all_row_items()
{
	// Make a set of owners
	unordered_set< RowItemOwner* > owners;
	for (const auto &r : *this)
		owners.insert(r->owner());

	// Make a list that is sorted from deepest first
	vector< RowItemOwner* > sorted_owners(owners.begin(), owners.end());
	sort(sorted_owners.begin(), sorted_owners.end(),
		[](const RowItemOwner* a, const RowItemOwner *b) {
			return a->depth() > b->depth(); });

	// Restack the items recursively
	for (auto &o : sorted_owners)
		o->restack_items();

	// Animate the items to their destination
	for (const auto &r : *this)
		r->animate_to_layout_v_offset();
}

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());

	const pair<int, int> extents = v_extents();
	const int extra_scroll_height = (extents.second - extents.first) / 4;
	verticalScrollBar()->setRange(extents.first - extra_scroll_height,
		extents.first + extra_scroll_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();
}

void View::paint_label(QPainter &p, int right, bool hover)
{
	(void)p;
	(void)right;
	(void)hover;
}

QRectF View::label_rect(int right)
{
	(void)right;
	return QRectF();
}

bool View::add_channels_to_owner(
	const vector< shared_ptr<sigrok::Channel> > &channels,
	RowItemOwner *owner, int &offset,
	unordered_map<shared_ptr<sigrok::Channel>, shared_ptr<Signal> >
		&signal_map,
	std::function<bool (shared_ptr<RowItem>)> filter_func)
{
	bool any_added = false;

	assert(owner);

	for (const auto &channel : channels)
	{
		const auto iter = signal_map.find(channel);
		if (iter == signal_map.end() ||
			(filter_func && !filter_func((*iter).second)))
			continue;

		shared_ptr<RowItem> row_item = (*iter).second;
		owner->add_child_item(row_item);
		apply_offset(row_item, offset);
		signal_map.erase(iter);

		any_added = true;
	}

	return any_added;
}

void View::apply_offset(shared_ptr<RowItem> row_item, int &offset) {
	assert(row_item);
	const pair<int, int> extents = row_item->v_extents();
	if (row_item->enabled())
		offset += -extents.first;
	row_item->force_to_v_offset(offset);
	if (row_item->enabled())
		offset += extents.second;
}

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::appearance_changed(bool label, bool content)
{
	if (label)
		_header->update();
	if (content)
		_viewport->update();
}

void View::extents_changed(bool horz, bool vert)
{
	_sticky_events |=
		(horz ? SelectableItemHExtentsChanged : 0) |
		(vert ? SelectableItemVExtentsChanged : 0);
	_lazy_event_handler.start();
}

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 = 0;

	// Populate the traces
	clear_child_items();

	shared_ptr<sigrok::Device> device = _session.device();
	assert(device);

	// Collect a set of signals
	unordered_map<shared_ptr<sigrok::Channel>, shared_ptr<Signal> >
		signal_map;

	shared_lock<shared_mutex> lock(_session.signals_mutex());
	const vector< shared_ptr<Signal> > &sigs(_session.signals());

	for (const shared_ptr<Signal> &sig : sigs)
		signal_map[sig->channel()] = sig;

	// Populate channel groups
	for (auto entry : device->channel_groups())
	{
		const shared_ptr<sigrok::ChannelGroup> &group = entry.second;

		if (group->channels().size() <= 1)
			continue;

		shared_ptr<TraceGroup> trace_group(new TraceGroup());
		int child_offset = 0;
		if (add_channels_to_owner(group->channels(),
			trace_group.get(), child_offset, signal_map))
		{
			add_child_item(trace_group);
			apply_offset(trace_group, offset);
		}
	}

	// Add the remaining logic channels
	shared_ptr<TraceGroup> logic_trace_group(new TraceGroup());
	int child_offset = 0;

	if (add_channels_to_owner(device->channels(),
		logic_trace_group.get(), child_offset, signal_map,
		[](shared_ptr<RowItem> r) -> bool {
			return dynamic_pointer_cast<LogicSignal>(r) != nullptr;
			}))

	{
		add_child_item(logic_trace_group);
		apply_offset(logic_trace_group, offset);
	}

	// Add the remaining channels
	add_channels_to_owner(device->channels(), this, offset, signal_map);
	assert(signal_map.empty());

	// Add decode signals
#ifdef ENABLE_DECODE
	const vector< shared_ptr<DecodeTrace> > decode_sigs(
		session().get_decode_signals());
	for (auto s : decode_sigs) {
		add_child_item(s);
		apply_offset(s, offset);
	}
#endif

	update_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::process_sticky_events()
{
	if (_sticky_events & SelectableItemHExtentsChanged)
		update_layout();
	if (_sticky_events & SelectableItemVExtentsChanged)
		restack_all_row_items();

	// Clear the sticky events
	_sticky_events = 0;
}

void View::on_hover_point_changed()
{
	for (shared_ptr<RowItem> r : *this)
		r->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
c3a740dd JH	25	#include <cassert>
	26	#include <climits>
	27	#include <cmath>
	28	#include <mutex>
7ff0145f	29	#include <unordered_set>
adb4b10c	30
adb4b10c	31	#include <QEvent>
cbd80f64	32	#include <QMouseEvent>
adb4b10c JH	33	#include <QScrollBar>
adb4b10c JH	34
448a72cf JH	35	#include <libsigrok/libsigrok.hpp>
448a72cf JH	36
84a0d458	37	#include "cursorheader.h"
b9329558	38	#include "decodetrace.h"
1d8dca91	39	#include "header.h"
448a72cf	40	#include "logicsignal.h"
ccdd3ef5	41	#include "ruler.h"
2e575351	42	#include "signal.h"
448a72cf	43	#include "tracegroup.h"
cdf7bea7 JH	44	#include "view.h"
cdf7bea7 JH	45	#include "viewport.h"
adb4b10c	46
1b1ec774 JH	47	#include "pv/sigsession.h"
	48	#include "pv/data/logic.h"
	49	#include "pv/data/logicsnapshot.h"
adb4b10c	50
aca64cac JH	51	using boost::shared_lock;
aca64cac JH	52	using boost::shared_mutex;
1bc6525b	53	using pv::data::SignalData;
a2321722	54	using std::back_inserter;
819f4c25	55	using std::deque;
448a72cf	56	using std::dynamic_pointer_cast;
819f4c25	57	using std::list;
c3a740dd	58	using std::lock_guard;
819f4c25	59	using std::max;
1bc6525b	60	using std::make_pair;
819f4c25	61	using std::min;
1bc6525b	62	using std::pair;
819f4c25	63	using std::set;
f9abf97e	64	using std::shared_ptr;
448a72cf	65	using std::unordered_map;
7ff0145f	66	using std::unordered_set;
819f4c25	67	using std::vector;
f9abf97e	68	using std::weak_ptr;
adb4b10c	69
cdf7bea7 JH	70	namespace pv {
cdf7bea7 JH	71	namespace view {
adb4b10c	72
cdf7bea7 JH	73	const double View::MaxScale = 1e9;
cdf7bea7 JH	74	const double View::MinScale = 1e-15;
adb4b10c	75
f25770e2 JH	76	const int View::MaxScrollValue = INT_MAX / 2;
f25770e2 JH	77
f76af637 JH	78	const QColor View::CursorAreaColour(220, 231, 243);
f76af637 JH	79
2e04f9bd JH	80	const QSizeF View::LabelPadding(4, 0);
2e04f9bd JH	81
cdf7bea7	82	View::View(SigSession &session, QWidget *parent) :
adb4b10c JH	83	QAbstractScrollArea(parent),
adb4b10c JH	84	_session(session),
cdf7bea7	85	_viewport(new Viewport(*this)),
ccdd3ef5	86	_ruler(new Ruler(*this)),
84a0d458	87	_cursorheader(new CursorHeader(*this)),
1d8dca91	88	_header(new Header(*this)),
adb4b10c JH	89	_scale(1e-6),
adb4b10c JH	90	_offset(0),
cbd80f64	91	_v_offset(0),
528bd8a1	92	_updating_scroll(false),
f76af637	93	_show_cursors(false),
b42d25c4	94	_cursors(*this),
cbd80f64	95	_hover_point(-1, -1)
adb4b10c	96	{
b16907d3 JH	97	connect(horizontalScrollBar(), SIGNAL(valueChanged(int)),
b16907d3 JH	98	this, SLOT(h_scroll_value_changed(int)));
adb4b10c JH	99	connect(verticalScrollBar(), SIGNAL(valueChanged(int)),
adb4b10c JH	100	this, SLOT(v_scroll_value_changed(int)));
69dd2b03 JH	101
	102	connect(&_session, SIGNAL(signals_changed()),
	103	this, SLOT(signals_changed()));
50f97924 PZ	104	connect(&_session, SIGNAL(capture_state_changed(int)),
50f97924 PZ	105	this, SLOT(data_updated()));
1f374035 JH	106	connect(&_session, SIGNAL(data_received()),
	107	this, SLOT(data_updated()));
	108	connect(&_session, SIGNAL(frame_ended()),
adb4b10c	109	this, SLOT(data_updated()));
1d8dca91	110
58864c5c	111	connect(_cursors.first().get(), SIGNAL(time_changed()),
ca4ec3ea	112	this, SLOT(marker_time_changed()));
58864c5c	113	connect(_cursors.second().get(), SIGNAL(time_changed()),
ca4ec3ea JH	114	this, SLOT(marker_time_changed()));
ca4ec3ea JH	115
54401bbb	116	connect(_header, SIGNAL(signals_moved()),
07204819	117	this, SLOT(on_signals_moved()));
54401bbb	118
17348f85	119	connect(_header, SIGNAL(selection_changed()),
84a0d458 JS	120	_cursorheader, SLOT(clear_selection()));
84a0d458 JS	121	connect(_cursorheader, SIGNAL(selection_changed()),
17348f85 JH	122	_header, SLOT(clear_selection()));
17348f85 JH	123
8b454527 JH	124	connect(_header, SIGNAL(selection_changed()),
8b454527 JH	125	this, SIGNAL(selection_changed()));
84a0d458	126	connect(_cursorheader, SIGNAL(selection_changed()),
8b454527 JH	127	this, SIGNAL(selection_changed()));
8b454527 JH	128
33c62f44 JH	129	connect(this, SIGNAL(hover_point_changed()),
	130	this, SLOT(on_hover_point_changed()));
	131
32218d3e JH	132	connect(&_lazy_event_handler, SIGNAL(timeout()),
	133	this, SLOT(process_sticky_events()));
	134	_lazy_event_handler.setSingleShot(true);
	135
adb4b10c	136	setViewport(_viewport);
cbd80f64 JH	137
	138	_viewport->installEventFilter(this);
	139	_ruler->installEventFilter(this);
84a0d458	140	_cursorheader->installEventFilter(this);
cbd80f64	141	_header->installEventFilter(this);
d873f4d6	142
9f46d905 JH	143	// Trigger the initial event manually. The default device has signals
9f46d905 JH	144	// which were created before this object came into being
d873f4d6	145	signals_changed();
84a0d458	146
512bfc56	147	// make sure the transparent widgets are on the top
84a0d458	148	_cursorheader->raise();
512bfc56	149	_header->raise();
adb4b10c JH	150	}
adb4b10c JH	151
1d19ef83 JH	152	SigSession& View::session()
	153	{
	154	return _session;
	155	}
	156
38eeddea JH	157	const SigSession& View::session() const
	158	{
	159	return _session;
	160	}
	161
eae6e30a JH	162	View* View::view()
	163	{
	164	return this;
	165	}
	166
	167	const View* View::view() const
	168	{
	169	return this;
	170	}
	171
2ae445ba SA	172	Viewport* View::viewport()
	173	{
	174	return _viewport;
	175	}
	176
	177	const Viewport* View::viewport() const
	178	{
	179	return _viewport;
	180	}
	181
cdf7bea7	182	double View::scale() const
adb4b10c JH	183	{
	184	return _scale;
	185	}
	186
cdf7bea7	187	double View::offset() const
adb4b10c JH	188	{
	189	return _offset;
	190	}
	191
7ff0145f	192	int View::owner_visual_v_offset() const
adb4b10c	193	{
23935421	194	return -_v_offset;
adb4b10c JH	195	}
adb4b10c JH	196
3e769a37 JH	197	unsigned int View::depth() const
	198	{
	199	return 0;
	200	}
	201
cdf7bea7	202	void View::zoom(double steps)
adb4b10c	203	{
f3f98f8f	204	zoom(steps, _viewport->width() / 2);
adb4b10c JH	205	}
adb4b10c JH	206
17c0f398 JH	207	void View::zoom(double steps, int offset)
17c0f398 JH	208	{
8b2e2a9a	209	set_zoom(_scale * pow(3.0/2.0, -steps), offset);
17c0f398 JH	210	}
17c0f398 JH	211
ca46b534 JH	212	void View::zoom_fit()
ca46b534 JH	213	{
1bc6525b JH	214	const pair<double, double> extents = get_time_extents();
	215	const double delta = extents.second - extents.first;
	216	if (delta < 1e-12)
ca46b534 JH	217	return;
	218
	219	assert(_viewport);
	220	const int w = _viewport->width();
	221	if (w <= 0)
	222	return;
	223
78311127 JH	224	const double scale = max(min(delta / w, MaxScale), MinScale);
78311127 JH	225	set_scale_offset(scale, extents.first);
ca46b534 JH	226	}
ca46b534 JH	227
d1e7d82c JH	228	void View::zoom_one_to_one()
	229	{
	230	using pv::data::SignalData;
	231
d1e7d82c	232	// Make a set of all the visible data objects
0fc664a9	233	set< shared_ptr<SignalData> > visible_data = get_visible_data();
d1e7d82c JH	234	if (visible_data.empty())
	235	return;
	236
	237	double samplerate = 0.0;
d9aecf1f	238	for (const shared_ptr<SignalData> d : visible_data) {
d1e7d82c JH	239	assert(d);
	240	samplerate = max(samplerate, d->samplerate());
	241	}
	242
	243	if (samplerate == 0.0)
	244	return;
	245
	246	assert(_viewport);
	247	const int w = _viewport->width();
	248	if (w <= 0)
	249	return;
	250
	251	set_zoom(1.0 / samplerate, w / 2);
	252	}
	253
cdf7bea7	254	void View::set_scale_offset(double scale, double offset)
adb4b10c JH	255	{
	256	_scale = scale;
	257	_offset = offset;
ccdd3ef5	258
adb4b10c	259	update_scroll();
ccdd3ef5	260	_ruler->update();
84a0d458	261	_cursorheader->update();
adb4b10c	262	_viewport->update();
e0fc5810	263	scale_offset_changed();
adb4b10c JH	264	}
adb4b10c JH	265
1bc6525b JH	266	set< shared_ptr<SignalData> > View::get_visible_data() const
1bc6525b JH	267	{
aca64cac	268	shared_lock<shared_mutex> lock(session().signals_mutex());
c3a740dd	269	const vector< shared_ptr<Signal> > &sigs(session().signals());
1bc6525b JH	270
	271	// Make a set of all the visible data objects
	272	set< shared_ptr<SignalData> > visible_data;
d9aecf1f	273	for (const shared_ptr<Signal> sig : sigs)
1bc6525b JH	274	if (sig->enabled())
	275	visible_data.insert(sig->data());
	276
	277	return visible_data;
	278	}
	279
	280	pair<double, double> View::get_time_extents() const
	281	{
	282	const set< shared_ptr<SignalData> > visible_data = get_visible_data();
	283	if (visible_data.empty())
	284	return make_pair(0.0, 0.0);
	285
	286	double left_time = DBL_MAX, right_time = DBL_MIN;
d9aecf1f	287	for (const shared_ptr<SignalData> d : visible_data)
1bc6525b JH	288	{
1bc6525b JH	289	const double start_time = d->get_start_time();
a472a884 JH	290	double samplerate = d->samplerate();
	291	samplerate = (samplerate <= 0.0) ? 1.0 : samplerate;
	292
1bc6525b JH	293	left_time = min(left_time, start_time);
1bc6525b JH	294	right_time = max(right_time, start_time +
a472a884	295	d->get_max_sample_count() / samplerate);
1bc6525b JH	296	}
	297
	298	assert(left_time < right_time);
	299	return make_pair(left_time, right_time);
	300	}
	301
f76af637 JH	302	bool View::cursors_shown() const
	303	{
	304	return _show_cursors;
	305	}
	306
	307	void View::show_cursors(bool show)
	308	{
	309	_show_cursors = show;
84a0d458	310	_cursorheader->update();
f76af637 JH	311	_viewport->update();
	312	}
	313
b4d91e56 JH	314	void View::centre_cursors()
	315	{
	316	const double time_width = _scale * _viewport->width();
58864c5c JH	317	_cursors.first()->set_time(_offset + time_width * 0.4);
58864c5c JH	318	_cursors.second()->set_time(_offset + time_width * 0.6);
84a0d458	319	_cursorheader->update();
b4d91e56 JH	320	_viewport->update();
	321	}
	322
b42d25c4	323	CursorPair& View::cursors()
f76af637 JH	324	{
	325	return _cursors;
	326	}
	327
58864c5c JH	328	const CursorPair& View::cursors() const
	329	{
	330	return _cursors;
	331	}
	332
cbd80f64 JH	333	const QPoint& View::hover_point() const
	334	{
	335	return _hover_point;
	336	}
	337
9cef9567 JH	338	void View::update_viewport()
	339	{
	340	assert(_viewport);
	341	_viewport->update();
7ff0145f JH	342	_header->update();
	343	}
	344
	345	void View::restack_all_row_items()
	346	{
	347	// Make a set of owners
	348	unordered_set< RowItemOwner* > owners;
	349	for (const auto &r : *this)
	350	owners.insert(r->owner());
	351
	352	// Make a list that is sorted from deepest first
	353	vector< RowItemOwner* > sorted_owners(owners.begin(), owners.end());
	354	sort(sorted_owners.begin(), sorted_owners.end(),
	355	[](const RowItemOwner* a, const RowItemOwner *b) {
	356	return a->depth() > b->depth(); });
	357
	358	// Restack the items recursively
	359	for (auto &o : sorted_owners)
	360	o->restack_items();
	361
	362	// Animate the items to their destination
	363	for (const auto &r : *this)
	364	r->animate_to_layout_v_offset();
9cef9567 JH	365	}
9cef9567 JH	366
f25770e2 JH	367	void View::get_scroll_layout(double &length, double &offset) const
f25770e2 JH	368	{
1bc6525b JH	369	const pair<double, double> extents = get_time_extents();
1bc6525b JH	370	length = (extents.second - extents.first) / _scale;
f25770e2 JH	371	offset = _offset / _scale;
	372	}
	373
d1e7d82c JH	374	void View::set_zoom(double scale, int offset)
	375	{
	376	const double cursor_offset = _offset + _scale * offset;
	377	const double new_scale = max(min(scale, MaxScale), MinScale);
	378	const double new_offset = cursor_offset - new_scale * offset;
	379	set_scale_offset(new_scale, new_offset);
	380	}
	381
cdf7bea7	382	void View::update_scroll()
adb4b10c JH	383	{
	384	assert(_viewport);
	385
	386	const QSize areaSize = _viewport->size();
	387
	388	// Set the horizontal scroll bar
	389	double length = 0, offset = 0;
f25770e2 JH	390	get_scroll_layout(length, offset);
f25770e2 JH	391	length = max(length - areaSize.width(), 0.0);
adb4b10c	392
b4ef7f2a	393	horizontalScrollBar()->setPageStep(areaSize.width() / 2);
f25770e2	394
528bd8a1 JH	395	_updating_scroll = true;
528bd8a1 JH	396
333d5bbc	397	if (length < MaxScrollValue) {
f25770e2 JH	398	horizontalScrollBar()->setRange(0, length);
	399	horizontalScrollBar()->setSliderPosition(offset);
	400	} else {
	401	horizontalScrollBar()->setRange(0, MaxScrollValue);
	402	horizontalScrollBar()->setSliderPosition(
	403	_offset * MaxScrollValue / (_scale * length));
	404	}
adb4b10c	405
528bd8a1 JH	406	_updating_scroll = false;
528bd8a1 JH	407
adb4b10c JH	408	// Set the vertical scrollbar
adb4b10c JH	409	verticalScrollBar()->setPageStep(areaSize.height());
a5d93c27 JH	410
	411	const pair<int, int> extents = v_extents();
	412	const int extra_scroll_height = (extents.second - extents.first) / 4;
	413	verticalScrollBar()->setRange(extents.first - extra_scroll_height,
	414	extents.first + extra_scroll_height);
adb4b10c JH	415	}
adb4b10c JH	416
d7c0ca4a JH	417	void View::update_layout()
d7c0ca4a JH	418	{
512bfc56 JS	419	setViewportMargins(
512bfc56 JS	420	_header->sizeHint().width() - pv::view::Header::BaselineOffset,
a6c1726e	421	_ruler->sizeHint().height(), 0, 0);
d7c0ca4a JH	422	_ruler->setGeometry(_viewport->x(), 0,
d7c0ca4a JH	423	_viewport->width(), _viewport->y());
84a0d458 JS	424	_cursorheader->setGeometry(
	425	_viewport->x(),
	426	_ruler->sizeHint().height() - _cursorheader->sizeHint().height() / 2,
	427	_viewport->width(), _cursorheader->sizeHint().height());
d7c0ca4a	428	_header->setGeometry(0, _viewport->y(),
512bfc56	429	_header->sizeHint().width(), _viewport->height());
d7c0ca4a JH	430	update_scroll();
	431	}
	432
eae6e30a JH	433	void View::paint_label(QPainter &p, int right, bool hover)
	434	{
	435	(void)p;
	436	(void)right;
	437	(void)hover;
	438	}
	439
	440	QRectF View::label_rect(int right)
	441	{
	442	(void)right;
	443	return QRectF();
	444	}
	445
448a72cf JH	446	bool View::add_channels_to_owner(
	447	const vector< shared_ptr<sigrok::Channel> > &channels,
	448	RowItemOwner *owner, int &offset,
	449	unordered_map<shared_ptr<sigrok::Channel>, shared_ptr<Signal> >
	450	&signal_map,
	451	std::function<bool (shared_ptr<RowItem>)> filter_func)
	452	{
	453	bool any_added = false;
	454
	455	assert(owner);
	456
	457	for (const auto &channel : channels)
	458	{
	459	const auto iter = signal_map.find(channel);
	460	if (iter == signal_map.end() \|\|
	461	(filter_func && !filter_func((*iter).second)))
	462	continue;
	463
	464	shared_ptr<RowItem> row_item = (*iter).second;
	465	owner->add_child_item(row_item);
	466	apply_offset(row_item, offset);
	467	signal_map.erase(iter);
	468
	469	any_added = true;
	470	}
	471
	472	return any_added;
	473	}
	474
	475	void View::apply_offset(shared_ptr<RowItem> row_item, int &offset) {
	476	assert(row_item);
	477	const pair<int, int> extents = row_item->v_extents();
	478	if (row_item->enabled())
	479	offset += -extents.first;
	480	row_item->force_to_v_offset(offset);
	481	if (row_item->enabled())
	482	offset += extents.second;
	483	}
	484
cbd80f64 JH	485	bool View::eventFilter(QObject object, QEvent event)
	486	{
	487	const QEvent::Type type = event->type();
333d5bbc	488	if (type == QEvent::MouseMove) {
cbd80f64 JH	489
cbd80f64 JH	490	const QMouseEvent const mouse_event = (QMouseEvent)event;
333d5bbc	491	if (object == _viewport)
cbd80f64	492	_hover_point = mouse_event->pos();
84a0d458	493	else if (object == _ruler \|\| object == _cursorheader)
cbd80f64	494	_hover_point = QPoint(mouse_event->x(), 0);
333d5bbc	495	else if (object == _header)
cbd80f64 JH	496	_hover_point = QPoint(0, mouse_event->y());
	497	else
	498	_hover_point = QPoint(-1, -1);
	499
	500	hover_point_changed();
	501
333d5bbc	502	} else if (type == QEvent::Leave) {
cbd80f64 JH	503	_hover_point = QPoint(-1, -1);
	504	hover_point_changed();
	505	}
	506
	507	return QObject::eventFilter(object, event);
	508	}
	509
cdf7bea7	510	bool View::viewportEvent(QEvent *e)
adb4b10c JH	511	{
	512	switch(e->type()) {
	513	case QEvent::Paint:
	514	case QEvent::MouseButtonPress:
	515	case QEvent::MouseButtonRelease:
	516	case QEvent::MouseButtonDblClick:
	517	case QEvent::MouseMove:
	518	case QEvent::Wheel:
4b4f1c0d MC	519	case QEvent::TouchBegin:
	520	case QEvent::TouchUpdate:
	521	case QEvent::TouchEnd:
adb4b10c JH	522	return false;
	523
	524	default:
	525	return QAbstractScrollArea::viewportEvent(e);
	526	}
	527	}
	528
e314eca4	529	void View::resizeEvent(QResizeEvent*)
adb4b10c	530	{
d7c0ca4a	531	update_layout();
adb4b10c JH	532	}
adb4b10c JH	533
32218d3e JH	534	void View::appearance_changed(bool label, bool content)
	535	{
	536	if (label)
	537	_header->update();
	538	if (content)
	539	_viewport->update();
	540	}
	541
	542	void View::extents_changed(bool horz, bool vert)
	543	{
	544	_sticky_events \|=
	545	(horz ? SelectableItemHExtentsChanged : 0) \|
	546	(vert ? SelectableItemVExtentsChanged : 0);
	547	_lazy_event_handler.start();
	548	}
	549
b16907d3	550	void View::h_scroll_value_changed(int value)
adb4b10c	551	{
528bd8a1 JH	552	if (_updating_scroll)
	553	return;
	554
f25770e2	555	const int range = horizontalScrollBar()->maximum();
333d5bbc	556	if (range < MaxScrollValue)
f25770e2 JH	557	_offset = _scale * value;
	558	else {
	559	double length = 0, offset;
	560	get_scroll_layout(length, offset);
	561	_offset = _scale * length * value / MaxScrollValue;
	562	}
	563
ccdd3ef5	564	_ruler->update();
84a0d458	565	_cursorheader->update();
adb4b10c JH	566	_viewport->update();
	567	}
	568
cdf7bea7	569	void View::v_scroll_value_changed(int value)
adb4b10c JH	570	{
adb4b10c JH	571	_v_offset = value;
1d8dca91	572	_header->update();
adb4b10c JH	573	_viewport->update();
	574	}
	575
69dd2b03 JH	576	void View::signals_changed()
69dd2b03 JH	577	{
448a72cf JH	578	int offset = 0;
448a72cf JH	579
68b21a71 JH	580	// Populate the traces
	581	clear_child_items();
	582
448a72cf JH	583	shared_ptr<sigrok::Device> device = _session.device();
	584	assert(device);
	585
	586	// Collect a set of signals
	587	unordered_map<shared_ptr<sigrok::Channel>, shared_ptr<Signal> >
	588	signal_map;
	589
	590	shared_lock<shared_mutex> lock(_session.signals_mutex());
	591	const vector< shared_ptr<Signal> > &sigs(_session.signals());
	592
	593	for (const shared_ptr<Signal> &sig : sigs)
	594	signal_map[sig->channel()] = sig;
	595
	596	// Populate channel groups
	597	for (auto entry : device->channel_groups())
	598	{
	599	const shared_ptr<sigrok::ChannelGroup> &group = entry.second;
	600
	601	if (group->channels().size() <= 1)
	602	continue;
	603
	604	shared_ptr<TraceGroup> trace_group(new TraceGroup());
	605	int child_offset = 0;
	606	if (add_channels_to_owner(group->channels(),
	607	trace_group.get(), child_offset, signal_map))
	608	{
	609	add_child_item(trace_group);
	610	apply_offset(trace_group, offset);
	611	}
	612	}
	613
	614	// Add the remaining logic channels
	615	shared_ptr<TraceGroup> logic_trace_group(new TraceGroup());
	616	int child_offset = 0;
	617
	618	if (add_channels_to_owner(device->channels(),
	619	logic_trace_group.get(), child_offset, signal_map,
	620	[](shared_ptr<RowItem> r) -> bool {
	621	return dynamic_pointer_cast<LogicSignal>(r) != nullptr;
	622	}))
68b21a71	623
448a72cf JH	624	{
	625	add_child_item(logic_trace_group);
	626	apply_offset(logic_trace_group, offset);
	627	}
	628
	629	// Add the remaining channels
	630	add_channels_to_owner(device->channels(), this, offset, signal_map);
	631	assert(signal_map.empty());
	632
	633	// Add decode signals
68b21a71 JH	634	#ifdef ENABLE_DECODE
	635	const vector< shared_ptr<DecodeTrace> > decode_sigs(
	636	session().get_decode_signals());
448a72cf	637	for (auto s : decode_sigs) {
68b21a71	638	add_child_item(s);
448a72cf	639	apply_offset(s, offset);
ef8311a4	640	}
448a72cf	641	#endif
ef8311a4	642
a6c1726e	643	update_layout();
69dd2b03 JH	644	}
69dd2b03 JH	645
cdf7bea7	646	void View::data_updated()
adb4b10c	647	{
adb4b10c JH	648	// Update the scroll bars
	649	update_scroll();
	650
	651	// Repaint the view
	652	_viewport->update();
	653	}
cdf7bea7	654
ca4ec3ea JH	655	void View::marker_time_changed()
ca4ec3ea JH	656	{
84a0d458	657	_cursorheader->update();
ca4ec3ea JH	658	_viewport->update();
	659	}
	660
07204819	661	void View::on_signals_moved()
54401bbb	662	{
07204819 JH	663	update_scroll();
07204819 JH	664	signals_moved();
54401bbb JH	665	}
54401bbb JH	666
32218d3e	667	void View::process_sticky_events()
d7c0ca4a	668	{
32218d3e JH	669	if (_sticky_events & SelectableItemHExtentsChanged)
32218d3e JH	670	update_layout();
7ff0145f JH	671	if (_sticky_events & SelectableItemVExtentsChanged)
7ff0145f JH	672	restack_all_row_items();
32218d3e JH	673
	674	// Clear the sticky events
	675	_sticky_events = 0;
d7c0ca4a JH	676	}
d7c0ca4a JH	677
33c62f44 JH	678	void View::on_hover_point_changed()
33c62f44 JH	679	{
aa59d5c2	680	for (shared_ptr<RowItem> r : *this)
eae6e30a	681	r->hover_point_changed();
33c62f44 JH	682	}
33c62f44 JH	683
cdf7bea7 JH	684	} // namespace view
cdf7bea7 JH	685	} // namespace pv