[pulseview.git] / pv / view / logicsignal.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, see <http://www.gnu.org/licenses/>.
 */

#include <extdef.h>

#include <cassert>
#include <cmath>

#include <algorithm>

#include <QApplication>
#include <QFormLayout>
#include <QToolBar>

#include "logicsignal.hpp"
#include "view.hpp"

#include <pv/data/logic.hpp>
#include <pv/data/logicsegment.hpp>
#include <pv/data/signalbase.hpp>
#include <pv/devicemanager.hpp>
#include <pv/devices/device.hpp>
#include <pv/globalsettings.hpp>
#include <pv/session.hpp>
#include <pv/view/view.hpp>

#include <libsigrokcxx/libsigrokcxx.hpp>

using std::deque;
using std::max;
using std::make_pair;
using std::min;
using std::none_of;
using std::pair;
using std::shared_ptr;
using std::vector;

using sigrok::ConfigKey;
using sigrok::Capability;
using sigrok::Trigger;
using sigrok::TriggerMatch;
using sigrok::TriggerMatchType;

namespace pv {
namespace views {
namespace TraceView {

const float LogicSignal::Oversampling = 2.0f;

const QColor LogicSignal::EdgeColour(0x80, 0x80, 0x80);
const QColor LogicSignal::HighColour(0x00, 0xC0, 0x00);
const QColor LogicSignal::LowColour(0xC0, 0x00, 0x00);
const QColor LogicSignal::SamplingPointColour(0x77, 0x77, 0x77);

const QColor LogicSignal::SignalColours[10] = {
	QColor(0x16, 0x19, 0x1A),	// Black
	QColor(0x8F, 0x52, 0x02),	// Brown
	QColor(0xCC, 0x00, 0x00),	// Red
	QColor(0xF5, 0x79, 0x00),	// Orange
	QColor(0xED, 0xD4, 0x00),	// Yellow
	QColor(0x73, 0xD2, 0x16),	// Green
	QColor(0x34, 0x65, 0xA4),	// Blue
	QColor(0x75, 0x50, 0x7B),	// Violet
	QColor(0x88, 0x8A, 0x85),	// Grey
	QColor(0xEE, 0xEE, 0xEC),	// White
};

QColor LogicSignal::TriggerMarkerBackgroundColour = QColor(0xED, 0xD4, 0x00);
const int LogicSignal::TriggerMarkerPadding = 2;
const char* LogicSignal::TriggerMarkerIcons[8] = {
	nullptr,
	":/icons/trigger-marker-low.svg",
	":/icons/trigger-marker-high.svg",
	":/icons/trigger-marker-rising.svg",
	":/icons/trigger-marker-falling.svg",
	":/icons/trigger-marker-change.svg",
	nullptr,
	nullptr
};

QCache<QString, const QIcon> LogicSignal::icon_cache_;
QCache<QString, const QPixmap> LogicSignal::pixmap_cache_;

LogicSignal::LogicSignal(
	pv::Session &session,
	shared_ptr<devices::Device> device,
	shared_ptr<data::SignalBase> base) :
	Signal(session, base),
	signal_height_(QFontMetrics(QApplication::font()).height() * 2),
	device_(device),
	trigger_none_(nullptr),
	trigger_rising_(nullptr),
	trigger_high_(nullptr),
	trigger_falling_(nullptr),
	trigger_low_(nullptr),
	trigger_change_(nullptr)
{
	shared_ptr<Trigger> trigger;

	base_->set_colour(SignalColours[base->index() % countof(SignalColours)]);

	/* Populate this channel's trigger setting with whatever we
	 * find in the current session trigger, if anything. */
	trigger_match_ = nullptr;
	if ((trigger = session_.session()->trigger()))
		for (auto stage : trigger->stages())
			for (auto match : stage->matches())
				if (match->channel() == base_->channel())
					trigger_match_ = match->type();
}

shared_ptr<pv::data::SignalData> LogicSignal::data() const
{
	return base_->logic_data();
}

shared_ptr<pv::data::Logic> LogicSignal::logic_data() const
{
	return base_->logic_data();
}

pair<int, int> LogicSignal::v_extents() const
{
	const int signal_margin =
		QFontMetrics(QApplication::font()).height() / 2;
	return make_pair(-signal_height_ - signal_margin, signal_margin);
}

int LogicSignal::scale_handle_offset() const
{
	return -signal_height_;
}

void LogicSignal::scale_handle_dragged(int offset)
{
	const int font_height = QFontMetrics(QApplication::font()).height();
	const int units = (-offset / font_height);
	signal_height_ = ((units < 1) ? 1 : units) * font_height;
}

void LogicSignal::paint_mid(QPainter &p, ViewItemPaintParams &pp)
{
	QLineF *line;

	vector< pair<int64_t, bool> > edges;

	assert(base_);
	assert(owner_);

	const int y = get_visual_y();

	if (!base_->enabled())
		return;

	const float high_offset = y - signal_height_ + 0.5f;
	const float low_offset = y + 0.5f;

	const deque< shared_ptr<pv::data::LogicSegment> > &segments =
		base_->logic_data()->logic_segments();
	if (segments.empty())
		return;

	const shared_ptr<pv::data::LogicSegment> &segment = segments.front();

	double samplerate = segment->samplerate();

	// Show sample rate as 1Hz when it is unknown
	if (samplerate == 0.0)
		samplerate = 1.0;

	const double pixels_offset = pp.pixels_offset();
	const pv::util::Timestamp& start_time = segment->start_time();
	const int64_t last_sample = segment->get_sample_count() - 1;
	const double samples_per_pixel = samplerate * pp.scale();
	const double pixels_per_sample = 1 / samples_per_pixel;
	const pv::util::Timestamp start = samplerate * (pp.offset() - start_time);
	const pv::util::Timestamp end = start + samples_per_pixel * pp.width();

	const int64_t start_sample = min(max(floor(start).convert_to<int64_t>(),
		(int64_t)0), last_sample);
	const uint64_t end_sample = min(max(ceil(end).convert_to<int64_t>(),
		(int64_t)0), last_sample);

	segment->get_subsampled_edges(edges, start_sample, end_sample,
		samples_per_pixel / Oversampling, base_->index());
	assert(edges.size() >= 2);

	// Check whether we need to paint the sampling points
	GlobalSettings settings;
	const bool show_sampling_points =
		settings.value(GlobalSettings::Key_View_ShowSamplingPoints).toBool() &&
		(samples_per_pixel < 0.25);

	vector<QRectF> sampling_points;
	float sampling_point_x = 0.0f;
	int64_t sampling_point_sample = start_sample;
	const int w = 2;

	if (show_sampling_points) {
		sampling_points.reserve(end_sample - start_sample + 1);
		sampling_point_x = (edges.cbegin()->first / samples_per_pixel - pixels_offset) + pp.left();
	}

	// Paint the edges
	const unsigned int edge_count = edges.size() - 2;
	QLineF *const edge_lines = new QLineF[edge_count];
	line = edge_lines;

	for (auto i = edges.cbegin() + 1; i != edges.cend() - 1; i++) {
		const float x = ((*i).first / samples_per_pixel -
			pixels_offset) + pp.left();
		*line++ = QLineF(x, high_offset, x, low_offset);

		if (show_sampling_points)
			while (sampling_point_sample < (*i).first) {
				const float y = (*i).second ? low_offset : high_offset;
				sampling_points.emplace_back(
					QRectF(sampling_point_x - (w / 2), y - (w / 2), w, w));
				sampling_point_sample++;
				sampling_point_x += pixels_per_sample;
			};
	}

	// Calculate the sample points from the last edge to the end of the trace
	if (show_sampling_points)
		while ((uint64_t)sampling_point_sample <= end_sample) {
			// Signal changed after the last edge, so the level is inverted
			const float y = (edges.cend() - 1)->second ? high_offset : low_offset;
			sampling_points.emplace_back(
				QRectF(sampling_point_x - (w / 2), y - (w / 2), w, w));
			sampling_point_sample++;
			sampling_point_x += pixels_per_sample;
		};

	p.setPen(EdgeColour);
	p.drawLines(edge_lines, edge_count);
	delete[] edge_lines;

	// Paint the caps
	const unsigned int max_cap_line_count = edges.size();
	QLineF *const cap_lines = new QLineF[max_cap_line_count];

	p.setPen(HighColour);
	paint_caps(p, cap_lines, edges, true, samples_per_pixel,
		pixels_offset, pp.left(), high_offset);
	p.setPen(LowColour);
	paint_caps(p, cap_lines, edges, false, samples_per_pixel,
		pixels_offset, pp.left(), low_offset);

	delete[] cap_lines;

	// Paint the sampling points
	if (show_sampling_points) {
		p.setPen(SamplingPointColour);
		p.drawRects(sampling_points.data(), sampling_points.size());
	}
}

void LogicSignal::paint_fore(QPainter &p, ViewItemPaintParams &pp)
{
	// Draw the trigger marker
	if (!trigger_match_ || !base_->enabled())
		return;

	const int y = get_visual_y();
	const vector<int32_t> trig_types = get_trigger_types();
	for (int32_t type_id : trig_types) {
		const TriggerMatchType *const type =
			TriggerMatchType::get(type_id);
		if (trigger_match_ != type || type_id < 0 ||
			(size_t)type_id >= countof(TriggerMarkerIcons) ||
			!TriggerMarkerIcons[type_id])
			continue;

		const QPixmap *const pixmap = get_pixmap(
			TriggerMarkerIcons[type_id]);
		if (!pixmap)
			continue;

		const float pad = TriggerMarkerPadding - 0.5f;
		const QSize size = pixmap->size();
		const QPoint point(
			pp.right() - size.width() - pad * 2,
			y - (signal_height_ + size.height()) / 2);

		p.setPen(QPen(TriggerMarkerBackgroundColour.darker()));
		p.setBrush(TriggerMarkerBackgroundColour);
		p.drawRoundedRect(QRectF(point, size).adjusted(
			-pad, -pad, pad, pad), pad, pad);
		p.drawPixmap(point, *pixmap);

		break;
	}
}

void LogicSignal::paint_caps(QPainter &p, QLineF *const lines,
	vector< pair<int64_t, bool> > &edges, bool level,
	double samples_per_pixel, double pixels_offset, float x_offset,
	float y_offset)
{
	QLineF *line = lines;

	for (auto i = edges.begin(); i != (edges.end() - 1); i++)
		if ((*i).second == level) {
			*line++ = QLineF(
				((*i).first / samples_per_pixel -
					pixels_offset) + x_offset, y_offset,
				((*(i+1)).first / samples_per_pixel -
					pixels_offset) + x_offset, y_offset);
		}

	p.drawLines(lines, line - lines);
}

void LogicSignal::init_trigger_actions(QWidget *parent)
{
	trigger_none_ = new QAction(*get_icon(":/icons/trigger-none.svg"),
		tr("No trigger"), parent);
	trigger_none_->setCheckable(true);
	connect(trigger_none_, SIGNAL(triggered()), this, SLOT(on_trigger()));

	trigger_rising_ = new QAction(*get_icon(":/icons/trigger-rising.svg"),
		tr("Trigger on rising edge"), parent);
	trigger_rising_->setCheckable(true);
	connect(trigger_rising_, SIGNAL(triggered()), this, SLOT(on_trigger()));

	trigger_high_ = new QAction(*get_icon(":/icons/trigger-high.svg"),
		tr("Trigger on high level"), parent);
	trigger_high_->setCheckable(true);
	connect(trigger_high_, SIGNAL(triggered()), this, SLOT(on_trigger()));

	trigger_falling_ = new QAction(*get_icon(":/icons/trigger-falling.svg"),
		tr("Trigger on falling edge"), parent);
	trigger_falling_->setCheckable(true);
	connect(trigger_falling_, SIGNAL(triggered()), this, SLOT(on_trigger()));

	trigger_low_ = new QAction(*get_icon(":/icons/trigger-low.svg"),
		tr("Trigger on low level"), parent);
	trigger_low_->setCheckable(true);
	connect(trigger_low_, SIGNAL(triggered()), this, SLOT(on_trigger()));

	trigger_change_ = new QAction(*get_icon(":/icons/trigger-change.svg"),
		tr("Trigger on rising or falling edge"), parent);
	trigger_change_->setCheckable(true);
	connect(trigger_change_, SIGNAL(triggered()), this, SLOT(on_trigger()));
}

const vector<int32_t> LogicSignal::get_trigger_types() const
{
	// We may not be associated with a device
	if (!device_)
		return vector<int32_t>();

	const auto sr_dev = device_->device();
	if (sr_dev->config_check(ConfigKey::TRIGGER_MATCH, Capability::LIST)) {
		const Glib::VariantContainerBase gvar =
			sr_dev->config_list(ConfigKey::TRIGGER_MATCH);

		vector<int32_t> ttypes;

		for (unsigned int i = 0; i < gvar.get_n_children(); i++) {
			Glib::VariantBase tmp_vb;
			gvar.get_child(tmp_vb, i);

			Glib::Variant<int32_t> tmp_v =
				Glib::VariantBase::cast_dynamic< Glib::Variant<int32_t> >(tmp_vb);

			ttypes.push_back(tmp_v.get());
		}

		return ttypes;
	} else {
		return vector<int32_t>();
	}
}

QAction* LogicSignal::action_from_trigger_type(const TriggerMatchType *type)
{
	QAction *action;

	action = trigger_none_;
	if (type) {
		switch (type->id()) {
		case SR_TRIGGER_ZERO:
			action = trigger_low_;
			break;
		case SR_TRIGGER_ONE:
			action = trigger_high_;
			break;
		case SR_TRIGGER_RISING:
			action = trigger_rising_;
			break;
		case SR_TRIGGER_FALLING:
			action = trigger_falling_;
			break;
		case SR_TRIGGER_EDGE:
			action = trigger_change_;
			break;
		default:
			assert(false);
		}
	}

	return action;
}

const TriggerMatchType *LogicSignal::trigger_type_from_action(QAction *action)
{
	if (action == trigger_low_)
		return TriggerMatchType::ZERO;
	else if (action == trigger_high_)
		return TriggerMatchType::ONE;
	else if (action == trigger_rising_)
		return TriggerMatchType::RISING;
	else if (action == trigger_falling_)
		return TriggerMatchType::FALLING;
	else if (action == trigger_change_)
		return TriggerMatchType::EDGE;
	else
		return nullptr;
}

void LogicSignal::populate_popup_form(QWidget *parent, QFormLayout *form)
{
	Signal::populate_popup_form(parent, form);

	const vector<int32_t> trig_types = get_trigger_types();

	if (!trig_types.empty()) {
		trigger_bar_ = new QToolBar(parent);
		init_trigger_actions(trigger_bar_);
		trigger_bar_->addAction(trigger_none_);
		trigger_none_->setChecked(!trigger_match_);

		for (auto type_id : trig_types) {
			const TriggerMatchType *const type =
				TriggerMatchType::get(type_id);
			QAction *const action = action_from_trigger_type(type);
			trigger_bar_->addAction(action);
			action->setChecked(trigger_match_ == type);
		}
		form->addRow(tr("Trigger"), trigger_bar_);
	}
}

void LogicSignal::modify_trigger()
{
	auto trigger = session_.session()->trigger();
	auto new_trigger = session_.device_manager().context()->create_trigger("pulseview");

	if (trigger) {
		for (auto stage : trigger->stages()) {
			const auto &matches = stage->matches();
			if (none_of(matches.begin(), matches.end(),
			    [&](shared_ptr<TriggerMatch> match) {
					return match->channel() != base_->channel(); }))
				continue;

			auto new_stage = new_trigger->add_stage();
			for (auto match : stage->matches()) {
				if (match->channel() == base_->channel())
					continue;
				new_stage->add_match(match->channel(), match->type());
			}
		}
	}

	if (trigger_match_) {
		// Until we can let the user decide how to group trigger matches
		// into stages, put all of the matches into a single stage --
		// most devices only support a single trigger stage.
		if (new_trigger->stages().empty())
			new_trigger->add_stage();

		new_trigger->stages().back()->add_match(base_->channel(),
			trigger_match_);
	}

	session_.session()->set_trigger(
		new_trigger->stages().empty() ? nullptr : new_trigger);

	if (owner_)
		owner_->row_item_appearance_changed(false, true);
}

const QIcon* LogicSignal::get_icon(const char *path)
{
	if (!icon_cache_.contains(path)) {
		const QIcon *icon = new QIcon(path);
		icon_cache_.insert(path, icon);
	}

	return icon_cache_.take(path);
}

const QPixmap* LogicSignal::get_pixmap(const char *path)
{
	if (!pixmap_cache_.contains(path)) {
		const QPixmap *pixmap = new QPixmap(path);
		pixmap_cache_.insert(path, pixmap);
	}

	return pixmap_cache_.take(path);
}

void LogicSignal::on_trigger()
{
	QAction *action;

	action_from_trigger_type(trigger_match_)->setChecked(false);

	action = (QAction *)sender();
	action->setChecked(true);
	trigger_match_ = trigger_type_from_action(action);

	modify_trigger();
}

} // namespace TraceView
} // namespace views
} // namespace pv
Commit	Line	Data
	1	/*
	2	* This file is part of the PulseView project.
	3	*
	4	* Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; either version 2 of the License, or
	9	* (at your option) any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* along with this program; if not, see <http://www.gnu.org/licenses/>.
	18	*/
	19
	20	#include <extdef.h>
	21
	22	#include <cassert>
	23	#include <cmath>
	24
	25	#include <algorithm>
	26
	27	#include <QApplication>
	28	#include <QFormLayout>
	29	#include <QToolBar>
	30
	31	#include "logicsignal.hpp"
	32	#include "view.hpp"
	33
	34	#include <pv/data/logic.hpp>
	35	#include <pv/data/logicsegment.hpp>
	36	#include <pv/data/signalbase.hpp>
	37	#include <pv/devicemanager.hpp>
	38	#include <pv/devices/device.hpp>
	39	#include <pv/globalsettings.hpp>
	40	#include <pv/session.hpp>
	41	#include <pv/view/view.hpp>
	42
	43	#include <libsigrokcxx/libsigrokcxx.hpp>
	44
	45	using std::deque;
	46	using std::max;
	47	using std::make_pair;
	48	using std::min;
	49	using std::none_of;
	50	using std::pair;
	51	using std::shared_ptr;
	52	using std::vector;
	53
	54	using sigrok::ConfigKey;
	55	using sigrok::Capability;
	56	using sigrok::Trigger;
	57	using sigrok::TriggerMatch;
	58	using sigrok::TriggerMatchType;
	59
	60	namespace pv {
	61	namespace views {
	62	namespace TraceView {
	63
	64	const float LogicSignal::Oversampling = 2.0f;
	65
	66	const QColor LogicSignal::EdgeColour(0x80, 0x80, 0x80);
	67	const QColor LogicSignal::HighColour(0x00, 0xC0, 0x00);
	68	const QColor LogicSignal::LowColour(0xC0, 0x00, 0x00);
	69	const QColor LogicSignal::SamplingPointColour(0x77, 0x77, 0x77);
	70
	71	const QColor LogicSignal::SignalColours[10] = {
	72	QColor(0x16, 0x19, 0x1A), // Black
	73	QColor(0x8F, 0x52, 0x02), // Brown
	74	QColor(0xCC, 0x00, 0x00), // Red
	75	QColor(0xF5, 0x79, 0x00), // Orange
	76	QColor(0xED, 0xD4, 0x00), // Yellow
	77	QColor(0x73, 0xD2, 0x16), // Green
	78	QColor(0x34, 0x65, 0xA4), // Blue
	79	QColor(0x75, 0x50, 0x7B), // Violet
	80	QColor(0x88, 0x8A, 0x85), // Grey
	81	QColor(0xEE, 0xEE, 0xEC), // White
	82	};
	83
	84	QColor LogicSignal::TriggerMarkerBackgroundColour = QColor(0xED, 0xD4, 0x00);
	85	const int LogicSignal::TriggerMarkerPadding = 2;
	86	const char* LogicSignal::TriggerMarkerIcons[8] = {
	87	nullptr,
	88	":/icons/trigger-marker-low.svg",
	89	":/icons/trigger-marker-high.svg",
	90	":/icons/trigger-marker-rising.svg",
	91	":/icons/trigger-marker-falling.svg",
	92	":/icons/trigger-marker-change.svg",
	93	nullptr,
	94	nullptr
	95	};
	96
	97	QCache<QString, const QIcon> LogicSignal::icon_cache_;
	98	QCache<QString, const QPixmap> LogicSignal::pixmap_cache_;
	99
	100	LogicSignal::LogicSignal(
	101	pv::Session &session,
	102	shared_ptr<devices::Device> device,
	103	shared_ptr<data::SignalBase> base) :
	104	Signal(session, base),
	105	signal_height_(QFontMetrics(QApplication::font()).height() * 2),
	106	device_(device),
	107	trigger_none_(nullptr),
	108	trigger_rising_(nullptr),
	109	trigger_high_(nullptr),
	110	trigger_falling_(nullptr),
	111	trigger_low_(nullptr),
	112	trigger_change_(nullptr)
	113	{
	114	shared_ptr<Trigger> trigger;
	115
	116	base_->set_colour(SignalColours[base->index() % countof(SignalColours)]);
	117
	118	/* Populate this channel's trigger setting with whatever we
	119	* find in the current session trigger, if anything. */
	120	trigger_match_ = nullptr;
	121	if ((trigger = session_.session()->trigger()))
	122	for (auto stage : trigger->stages())
	123	for (auto match : stage->matches())
	124	if (match->channel() == base_->channel())
	125	trigger_match_ = match->type();
	126	}
	127
	128	shared_ptr<pv::data::SignalData> LogicSignal::data() const
	129	{
	130	return base_->logic_data();
	131	}
	132
	133	shared_ptr<pv::data::Logic> LogicSignal::logic_data() const
	134	{
	135	return base_->logic_data();
	136	}
	137
	138	pair<int, int> LogicSignal::v_extents() const
	139	{
	140	const int signal_margin =
	141	QFontMetrics(QApplication::font()).height() / 2;
	142	return make_pair(-signal_height_ - signal_margin, signal_margin);
	143	}
	144
	145	int LogicSignal::scale_handle_offset() const
	146	{
	147	return -signal_height_;
	148	}
	149
	150	void LogicSignal::scale_handle_dragged(int offset)
	151	{
	152	const int font_height = QFontMetrics(QApplication::font()).height();
	153	const int units = (-offset / font_height);
	154	signal_height_ = ((units < 1) ? 1 : units) * font_height;
	155	}
	156
	157	void LogicSignal::paint_mid(QPainter &p, ViewItemPaintParams &pp)
	158	{
	159	QLineF *line;
	160
	161	vector< pair<int64_t, bool> > edges;
	162
	163	assert(base_);
	164	assert(owner_);
	165
	166	const int y = get_visual_y();
	167
	168	if (!base_->enabled())
	169	return;
	170
	171	const float high_offset = y - signal_height_ + 0.5f;
	172	const float low_offset = y + 0.5f;
	173
	174	const deque< shared_ptr<pv::data::LogicSegment> > &segments =
	175	base_->logic_data()->logic_segments();
	176	if (segments.empty())
	177	return;
	178
	179	const shared_ptr<pv::data::LogicSegment> &segment = segments.front();
	180
	181	double samplerate = segment->samplerate();
	182
	183	// Show sample rate as 1Hz when it is unknown
	184	if (samplerate == 0.0)
	185	samplerate = 1.0;
	186
	187	const double pixels_offset = pp.pixels_offset();
	188	const pv::util::Timestamp& start_time = segment->start_time();
	189	const int64_t last_sample = segment->get_sample_count() - 1;
	190	const double samples_per_pixel = samplerate * pp.scale();
	191	const double pixels_per_sample = 1 / samples_per_pixel;
	192	const pv::util::Timestamp start = samplerate * (pp.offset() - start_time);
	193	const pv::util::Timestamp end = start + samples_per_pixel * pp.width();
	194
	195	const int64_t start_sample = min(max(floor(start).convert_to<int64_t>(),
	196	(int64_t)0), last_sample);
	197	const uint64_t end_sample = min(max(ceil(end).convert_to<int64_t>(),
	198	(int64_t)0), last_sample);
	199
	200	segment->get_subsampled_edges(edges, start_sample, end_sample,
	201	samples_per_pixel / Oversampling, base_->index());
	202	assert(edges.size() >= 2);
	203
	204	// Check whether we need to paint the sampling points
	205	GlobalSettings settings;
	206	const bool show_sampling_points =
	207	settings.value(GlobalSettings::Key_View_ShowSamplingPoints).toBool() &&
	208	(samples_per_pixel < 0.25);
	209
	210	vector<QRectF> sampling_points;
	211	float sampling_point_x = 0.0f;
	212	int64_t sampling_point_sample = start_sample;
	213	const int w = 2;
	214
	215	if (show_sampling_points) {
	216	sampling_points.reserve(end_sample - start_sample + 1);
	217	sampling_point_x = (edges.cbegin()->first / samples_per_pixel - pixels_offset) + pp.left();
	218	}
	219
	220	// Paint the edges
	221	const unsigned int edge_count = edges.size() - 2;
	222	QLineF *const edge_lines = new QLineF[edge_count];
	223	line = edge_lines;
	224
	225	for (auto i = edges.cbegin() + 1; i != edges.cend() - 1; i++) {
	226	const float x = ((*i).first / samples_per_pixel -
	227	pixels_offset) + pp.left();
	228	*line++ = QLineF(x, high_offset, x, low_offset);
	229
	230	if (show_sampling_points)
	231	while (sampling_point_sample < (*i).first) {
	232	const float y = (*i).second ? low_offset : high_offset;
	233	sampling_points.emplace_back(
	234	QRectF(sampling_point_x - (w / 2), y - (w / 2), w, w));
	235	sampling_point_sample++;
	236	sampling_point_x += pixels_per_sample;
	237	};
	238	}
	239
	240	// Calculate the sample points from the last edge to the end of the trace
	241	if (show_sampling_points)
	242	while ((uint64_t)sampling_point_sample <= end_sample) {
	243	// Signal changed after the last edge, so the level is inverted
	244	const float y = (edges.cend() - 1)->second ? high_offset : low_offset;
	245	sampling_points.emplace_back(
	246	QRectF(sampling_point_x - (w / 2), y - (w / 2), w, w));
	247	sampling_point_sample++;
	248	sampling_point_x += pixels_per_sample;
	249	};
	250
	251	p.setPen(EdgeColour);
	252	p.drawLines(edge_lines, edge_count);
	253	delete[] edge_lines;
	254
	255	// Paint the caps
	256	const unsigned int max_cap_line_count = edges.size();
	257	QLineF *const cap_lines = new QLineF[max_cap_line_count];
	258
	259	p.setPen(HighColour);
	260	paint_caps(p, cap_lines, edges, true, samples_per_pixel,
	261	pixels_offset, pp.left(), high_offset);
	262	p.setPen(LowColour);
	263	paint_caps(p, cap_lines, edges, false, samples_per_pixel,
	264	pixels_offset, pp.left(), low_offset);
	265
	266	delete[] cap_lines;
	267
	268	// Paint the sampling points
	269	if (show_sampling_points) {
	270	p.setPen(SamplingPointColour);
	271	p.drawRects(sampling_points.data(), sampling_points.size());
	272	}
	273	}
	274
	275	void LogicSignal::paint_fore(QPainter &p, ViewItemPaintParams &pp)
	276	{
	277	// Draw the trigger marker
	278	if (!trigger_match_ \|\| !base_->enabled())
	279	return;
	280
	281	const int y = get_visual_y();
	282	const vector<int32_t> trig_types = get_trigger_types();
	283	for (int32_t type_id : trig_types) {
	284	const TriggerMatchType *const type =
	285	TriggerMatchType::get(type_id);
	286	if (trigger_match_ != type \|\| type_id < 0 \|\|
	287	(size_t)type_id >= countof(TriggerMarkerIcons) \|\|
	288	!TriggerMarkerIcons[type_id])
	289	continue;
	290
	291	const QPixmap *const pixmap = get_pixmap(
	292	TriggerMarkerIcons[type_id]);
	293	if (!pixmap)
	294	continue;
	295
	296	const float pad = TriggerMarkerPadding - 0.5f;
	297	const QSize size = pixmap->size();
	298	const QPoint point(
	299	pp.right() - size.width() - pad * 2,
	300	y - (signal_height_ + size.height()) / 2);
	301
	302	p.setPen(QPen(TriggerMarkerBackgroundColour.darker()));
	303	p.setBrush(TriggerMarkerBackgroundColour);
	304	p.drawRoundedRect(QRectF(point, size).adjusted(
	305	-pad, -pad, pad, pad), pad, pad);
	306	p.drawPixmap(point, *pixmap);
	307
	308	break;
	309	}
	310	}
	311
	312	void LogicSignal::paint_caps(QPainter &p, QLineF *const lines,
	313	vector< pair<int64_t, bool> > &edges, bool level,
	314	double samples_per_pixel, double pixels_offset, float x_offset,
	315	float y_offset)
	316	{
	317	QLineF *line = lines;
	318
	319	for (auto i = edges.begin(); i != (edges.end() - 1); i++)
	320	if ((*i).second == level) {
	321	*line++ = QLineF(
	322	((*i).first / samples_per_pixel -
	323	pixels_offset) + x_offset, y_offset,
	324	((*(i+1)).first / samples_per_pixel -
	325	pixels_offset) + x_offset, y_offset);
	326	}
	327
	328	p.drawLines(lines, line - lines);
	329	}
	330
	331	void LogicSignal::init_trigger_actions(QWidget *parent)
	332	{
	333	trigger_none_ = new QAction(*get_icon(":/icons/trigger-none.svg"),
	334	tr("No trigger"), parent);
	335	trigger_none_->setCheckable(true);
	336	connect(trigger_none_, SIGNAL(triggered()), this, SLOT(on_trigger()));
	337
	338	trigger_rising_ = new QAction(*get_icon(":/icons/trigger-rising.svg"),
	339	tr("Trigger on rising edge"), parent);
	340	trigger_rising_->setCheckable(true);
	341	connect(trigger_rising_, SIGNAL(triggered()), this, SLOT(on_trigger()));
	342
	343	trigger_high_ = new QAction(*get_icon(":/icons/trigger-high.svg"),
	344	tr("Trigger on high level"), parent);
	345	trigger_high_->setCheckable(true);
	346	connect(trigger_high_, SIGNAL(triggered()), this, SLOT(on_trigger()));
	347
	348	trigger_falling_ = new QAction(*get_icon(":/icons/trigger-falling.svg"),
	349	tr("Trigger on falling edge"), parent);
	350	trigger_falling_->setCheckable(true);
	351	connect(trigger_falling_, SIGNAL(triggered()), this, SLOT(on_trigger()));
	352
	353	trigger_low_ = new QAction(*get_icon(":/icons/trigger-low.svg"),
	354	tr("Trigger on low level"), parent);
	355	trigger_low_->setCheckable(true);
	356	connect(trigger_low_, SIGNAL(triggered()), this, SLOT(on_trigger()));
	357
	358	trigger_change_ = new QAction(*get_icon(":/icons/trigger-change.svg"),
	359	tr("Trigger on rising or falling edge"), parent);
	360	trigger_change_->setCheckable(true);
	361	connect(trigger_change_, SIGNAL(triggered()), this, SLOT(on_trigger()));
	362	}
	363
	364	const vector<int32_t> LogicSignal::get_trigger_types() const
	365	{
	366	// We may not be associated with a device
	367	if (!device_)
	368	return vector<int32_t>();
	369
	370	const auto sr_dev = device_->device();
	371	if (sr_dev->config_check(ConfigKey::TRIGGER_MATCH, Capability::LIST)) {
	372	const Glib::VariantContainerBase gvar =
	373	sr_dev->config_list(ConfigKey::TRIGGER_MATCH);
	374
	375	vector<int32_t> ttypes;
	376
	377	for (unsigned int i = 0; i < gvar.get_n_children(); i++) {
	378	Glib::VariantBase tmp_vb;
	379	gvar.get_child(tmp_vb, i);
	380
	381	Glib::Variant<int32_t> tmp_v =
	382	Glib::VariantBase::cast_dynamic< Glib::Variant<int32_t> >(tmp_vb);
	383
	384	ttypes.push_back(tmp_v.get());
	385	}
	386
	387	return ttypes;
	388	} else {
	389	return vector<int32_t>();
	390	}
	391	}
	392
	393	QAction* LogicSignal::action_from_trigger_type(const TriggerMatchType *type)
	394	{
	395	QAction *action;
	396
	397	action = trigger_none_;
	398	if (type) {
	399	switch (type->id()) {
	400	case SR_TRIGGER_ZERO:
	401	action = trigger_low_;
	402	break;
	403	case SR_TRIGGER_ONE:
	404	action = trigger_high_;
	405	break;
	406	case SR_TRIGGER_RISING:
	407	action = trigger_rising_;
	408	break;
	409	case SR_TRIGGER_FALLING:
	410	action = trigger_falling_;
	411	break;
	412	case SR_TRIGGER_EDGE:
	413	action = trigger_change_;
	414	break;
	415	default:
	416	assert(false);
	417	}
	418	}
	419
	420	return action;
	421	}
	422
	423	const TriggerMatchType LogicSignal::trigger_type_from_action(QAction action)
	424	{
	425	if (action == trigger_low_)
	426	return TriggerMatchType::ZERO;
	427	else if (action == trigger_high_)
	428	return TriggerMatchType::ONE;
	429	else if (action == trigger_rising_)
	430	return TriggerMatchType::RISING;
	431	else if (action == trigger_falling_)
	432	return TriggerMatchType::FALLING;
	433	else if (action == trigger_change_)
	434	return TriggerMatchType::EDGE;
	435	else
	436	return nullptr;
	437	}
	438
	439	void LogicSignal::populate_popup_form(QWidget parent, QFormLayout form)
	440	{
	441	Signal::populate_popup_form(parent, form);
	442
	443	const vector<int32_t> trig_types = get_trigger_types();
	444
	445	if (!trig_types.empty()) {
	446	trigger_bar_ = new QToolBar(parent);
	447	init_trigger_actions(trigger_bar_);
	448	trigger_bar_->addAction(trigger_none_);
	449	trigger_none_->setChecked(!trigger_match_);
	450
	451	for (auto type_id : trig_types) {
	452	const TriggerMatchType *const type =
	453	TriggerMatchType::get(type_id);
	454	QAction *const action = action_from_trigger_type(type);
	455	trigger_bar_->addAction(action);
	456	action->setChecked(trigger_match_ == type);
	457	}
	458	form->addRow(tr("Trigger"), trigger_bar_);
	459	}
	460	}
	461
	462	void LogicSignal::modify_trigger()
	463	{
	464	auto trigger = session_.session()->trigger();
	465	auto new_trigger = session_.device_manager().context()->create_trigger("pulseview");
	466
	467	if (trigger) {
	468	for (auto stage : trigger->stages()) {
	469	const auto &matches = stage->matches();
	470	if (none_of(matches.begin(), matches.end(),
	471	[&](shared_ptr<TriggerMatch> match) {
	472	return match->channel() != base_->channel(); }))
	473	continue;
	474
	475	auto new_stage = new_trigger->add_stage();
	476	for (auto match : stage->matches()) {
	477	if (match->channel() == base_->channel())
	478	continue;
	479	new_stage->add_match(match->channel(), match->type());
	480	}
	481	}
	482	}
	483
	484	if (trigger_match_) {
	485	// Until we can let the user decide how to group trigger matches
	486	// into stages, put all of the matches into a single stage --
	487	// most devices only support a single trigger stage.
	488	if (new_trigger->stages().empty())
	489	new_trigger->add_stage();
	490
	491	new_trigger->stages().back()->add_match(base_->channel(),
	492	trigger_match_);
	493	}
	494
	495	session_.session()->set_trigger(
	496	new_trigger->stages().empty() ? nullptr : new_trigger);
	497
	498	if (owner_)
	499	owner_->row_item_appearance_changed(false, true);
	500	}
	501
	502	const QIcon* LogicSignal::get_icon(const char *path)
	503	{
	504	if (!icon_cache_.contains(path)) {
	505	const QIcon *icon = new QIcon(path);
	506	icon_cache_.insert(path, icon);
	507	}
	508
	509	return icon_cache_.take(path);
	510	}
	511
	512	const QPixmap* LogicSignal::get_pixmap(const char *path)
	513	{
	514	if (!pixmap_cache_.contains(path)) {
	515	const QPixmap *pixmap = new QPixmap(path);
	516	pixmap_cache_.insert(path, pixmap);
	517	}
	518
	519	return pixmap_cache_.take(path);
	520	}
	521
	522	void LogicSignal::on_trigger()
	523	{
	524	QAction *action;
	525
	526	action_from_trigger_type(trigger_match_)->setChecked(false);
	527
	528	action = (QAction *)sender();
	529	action->setChecked(true);
	530	trigger_match_ = trigger_type_from_action(action);
	531
	532	modify_trigger();
	533	}
	534
	535	} // namespace TraceView
	536	} // namespace views
	537	} // namespace pv