[pulseview.git] / pv / toolbars / mainbar.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
 */

#include <extdef.h>

#include <assert.h>

#include <QAction>
#include <QDebug>
#include <QHelpEvent>
#include <QMenu>
#include <QToolTip>

#include "mainbar.hpp"

#include <pv/devicemanager.hpp>
#include <pv/mainwindow.hpp>
#include <pv/popups/deviceoptions.hpp>
#include <pv/popups/channels.hpp>
#include <pv/util.hpp>

#include <libsigrok/libsigrok.hpp>

using std::map;
using std::vector;
using std::max;
using std::min;
using std::shared_ptr;
using std::string;

using sigrok::Capability;
using sigrok::ConfigKey;
using sigrok::Device;
using sigrok::Error;

namespace pv {
namespace toolbars {

const uint64_t MainBar::MinSampleCount = 100ULL;
const uint64_t MainBar::MaxSampleCount = 1000000000000ULL;
const uint64_t MainBar::DefaultSampleCount = 1000000;

MainBar::MainBar(Session &session, MainWindow &main_window) :
	QToolBar("Sampling Bar", &main_window),
	session_(session),
	main_window_(main_window),
	device_selector_(this),
	updating_device_selector_(false),
	configure_button_(this),
	configure_button_action_(NULL),
	channels_button_(this),
	sample_count_(" samples", this),
	sample_rate_("Hz", this),
	updating_sample_rate_(false),
	updating_sample_count_(false),
	sample_count_supported_(false),
	icon_red_(":/icons/status-red.svg"),
	icon_green_(":/icons/status-green.svg"),
	icon_grey_(":/icons/status-grey.svg"),
	run_stop_button_(this),
	menu_button_(this)
{
	setObjectName(QString::fromUtf8("MainBar"));

	setMovable(false);
	setFloatable(false);

	// Setup the decoder button
#ifdef ENABLE_DECODE
	QToolButton *add_decoder_button = new QToolButton(this);
	add_decoder_button->setIcon(QIcon::fromTheme("add-decoder",
		QIcon(":/icons/add-decoder.svg")));
	add_decoder_button->setPopupMode(QToolButton::InstantPopup);
	add_decoder_button->setMenu(main_window_.menu_decoder_add());
#endif

	// Setup the menu
	QMenu *const menu = new QMenu(this);

	QMenu *const menu_help = new QMenu;
	menu_help->setTitle(tr("&Help"));
	menu_help->addAction(main_window.action_about());

	menu->addAction(menu_help->menuAction());
	menu->addSeparator();
	menu->addAction(main_window.action_quit());

	menu_button_.setMenu(menu);
	menu_button_.setPopupMode(QToolButton::InstantPopup);
	menu_button_.setIcon(QIcon::fromTheme("menu",
		QIcon(":/icons/menu.svg")));

	// Setup the toolbar
	addAction(main_window.action_open());
	addAction(main_window.action_save_as());
	addSeparator();
	addAction(main_window.action_view_zoom_in());
	addAction(main_window.action_view_zoom_out());
	addAction(main_window.action_view_zoom_fit());
	addAction(main_window.action_view_zoom_one_to_one());
	addSeparator();
	addAction(main_window.action_view_show_cursors());
	addSeparator();

	connect(&run_stop_button_, SIGNAL(clicked()),
		this, SLOT(on_run_stop()));
	connect(&device_selector_, SIGNAL(currentIndexChanged (int)),
		this, SLOT(on_device_selected()));
	connect(&sample_count_, SIGNAL(value_changed()),
		this, SLOT(on_sample_count_changed()));
	connect(&sample_rate_, SIGNAL(value_changed()),
		this, SLOT(on_sample_rate_changed()));

	sample_count_.show_min_max_step(0, UINT64_MAX, 1);

	set_capture_state(pv::Session::Stopped);

	configure_button_.setIcon(QIcon::fromTheme("configure",
		QIcon(":/icons/configure.png")));

	channels_button_.setIcon(QIcon::fromTheme("channels",
		QIcon(":/icons/channels.svg")));

	run_stop_button_.setToolButtonStyle(Qt::ToolButtonTextBesideIcon);

	addWidget(&device_selector_);
	configure_button_action_ = addWidget(&configure_button_);
	addWidget(&channels_button_);
	addWidget(&sample_count_);
	addWidget(&sample_rate_);
	addWidget(&run_stop_button_);
#ifdef ENABLE_DECODE
	addSeparator();
	addWidget(add_decoder_button);
#endif

	QWidget *const spacer = new QWidget();
	spacer->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
	addWidget(spacer);

	addWidget(&menu_button_);

	sample_count_.installEventFilter(this);
	sample_rate_.installEventFilter(this);
}

void MainBar::set_device_list(
	const std::list< std::shared_ptr<sigrok::Device> > &devices,
	shared_ptr<Device> selected)
{
	int selected_index = -1;

	assert(selected);

	updating_device_selector_ = true;

	device_selector_.clear();

	for (auto device : devices) {
		assert(device);

		string display_name =
			session_.device_manager().get_display_name(device);

		if (selected == device)
			selected_index = device_selector_.count();

		device_selector_.addItem(display_name.c_str(),
			qVariantFromValue(device));
	}

	// The selected device should have been in the list
	assert(selected_index != -1);
	device_selector_.setCurrentIndex(selected_index);

	update_device_config_widgets();

	updating_device_selector_ = false;
}

shared_ptr<Device> MainBar::get_selected_device() const
{
	const int index = device_selector_.currentIndex();
	if (index < 0)
		return shared_ptr<Device>();

	return device_selector_.itemData(index).value<shared_ptr<Device>>();
}

void MainBar::set_capture_state(pv::Session::capture_state state)
{
	const QIcon *icons[] = {&icon_grey_, &icon_red_, &icon_green_};
	run_stop_button_.setIcon(*icons[state]);
	run_stop_button_.setText((state == pv::Session::Stopped) ?
		tr("Run") : tr("Stop"));
	run_stop_button_.setShortcut(QKeySequence(Qt::Key_Space));
}

void MainBar::update_sample_rate_selector()
{
	Glib::VariantContainerBase gvar_dict;
	GVariant *gvar_list;
	const uint64_t *elements = NULL;
	gsize num_elements;

	if (updating_sample_rate_)
		return;

	const shared_ptr<Device> device = get_selected_device();
	if (!device)
		return;

	assert(!updating_sample_rate_);
	updating_sample_rate_ = true;

	const auto keys = device->config_keys(ConfigKey::DEVICE_OPTIONS);
	const auto iter = keys.find(ConfigKey::SAMPLERATE);
	if (iter != keys.end() &&
		(*iter).second.find(sigrok::LIST) != (*iter).second.end()) {
		const auto keys = device->config_keys(
			ConfigKey::DEVICE_OPTIONS);
		try {
			gvar_dict = device->config_list(ConfigKey::SAMPLERATE);
		} catch(const sigrok::Error &e) {
			// Failed to enunmerate samplerate
			(void)e;
		}
	}

	if (!gvar_dict) {
		sample_rate_.show_none();
		updating_sample_rate_ = false;
		return;
	}

	if ((gvar_list = g_variant_lookup_value(gvar_dict.gobj(),
			"samplerate-steps", G_VARIANT_TYPE("at"))))
	{
		elements = (const uint64_t *)g_variant_get_fixed_array(
				gvar_list, &num_elements, sizeof(uint64_t));

		const uint64_t min = elements[0];
		const uint64_t max = elements[1];
		const uint64_t step = elements[2];

		g_variant_unref(gvar_list);

		assert(min > 0);
		assert(max > 0);
		assert(max > min);
		assert(step > 0);

		if (step == 1)
			sample_rate_.show_125_list(min, max);
		else
		{
			// When the step is not 1, we cam't make a 1-2-5-10
			// list of sample rates, because we may not be able to
			// make round numbers. Therefore in this case, show a
			// spin box.
			sample_rate_.show_min_max_step(min, max, step);
		}
	}
	else if ((gvar_list = g_variant_lookup_value(gvar_dict.gobj(),
			"samplerates", G_VARIANT_TYPE("at"))))
	{
		elements = (const uint64_t *)g_variant_get_fixed_array(
				gvar_list, &num_elements, sizeof(uint64_t));
		sample_rate_.show_list(elements, num_elements);
		g_variant_unref(gvar_list);
	}
	updating_sample_rate_ = false;

	update_sample_rate_selector_value();
}

void MainBar::update_sample_rate_selector_value()
{
	if (updating_sample_rate_)
		return;

	const shared_ptr<Device> device = get_selected_device();
	if (!device)
		return;

	try {
		auto gvar = device->config_get(ConfigKey::SAMPLERATE);
		uint64_t samplerate =
			Glib::VariantBase::cast_dynamic<Glib::Variant<guint64>>(gvar).get();
		assert(!updating_sample_rate_);
		updating_sample_rate_ = true;
		sample_rate_.set_value(samplerate);
		updating_sample_rate_ = false;
	} catch (Error error) {
		qDebug() << "WARNING: Failed to get value of sample rate";
		return;
	}
}

void MainBar::update_sample_count_selector()
{
	if (updating_sample_count_)
		return;

	const shared_ptr<Device> device = get_selected_device();
	if (!device)
		return;

	assert(!updating_sample_count_);
	updating_sample_count_ = true;

	if (!sample_count_supported_)
	{
		sample_count_.show_none();
		updating_sample_count_ = false;
		return;
	}

	uint64_t sample_count = sample_count_.value();
	uint64_t min_sample_count = 0;
	uint64_t max_sample_count = MaxSampleCount;

	if (sample_count == 0)
		sample_count = DefaultSampleCount;

	const auto keys = device->config_keys(ConfigKey::DEVICE_OPTIONS);
	const auto iter = keys.find(ConfigKey::LIMIT_SAMPLES);
	if (iter != keys.end() &&
		(*iter).second.find(sigrok::LIST) != (*iter).second.end()) {
		try {
			auto gvar =
				device->config_list(ConfigKey::LIMIT_SAMPLES);
			if (gvar)
				g_variant_get(gvar.gobj(), "(tt)",
					&min_sample_count, &max_sample_count);
		} catch(const sigrok::Error &e) {
			// Failed to query sample limit
			(void)e;
		}
	}

	min_sample_count = min(max(min_sample_count, MinSampleCount),
		max_sample_count);

	sample_count_.show_125_list(
		min_sample_count, max_sample_count);

	try {
		auto gvar = device->config_get(ConfigKey::LIMIT_SAMPLES);
		sample_count = g_variant_get_uint64(gvar.gobj());
		if (sample_count == 0)
			sample_count = DefaultSampleCount;
		sample_count = min(max(sample_count, MinSampleCount),
			max_sample_count);
	} catch (Error error) {}

	sample_count_.set_value(sample_count);

	updating_sample_count_ = false;
}

void MainBar::update_device_config_widgets()
{
	using namespace pv::popups;

	const shared_ptr<Device> device = get_selected_device();
	if (!device)
		return;

	// Update the configure popup
	DeviceOptions *const opts = new DeviceOptions(device, this);
	configure_button_action_->setVisible(
		!opts->binding().properties().empty());
	configure_button_.set_popup(opts);

	// Update the channels popup
	Channels *const channels = new Channels(session_, this);
	channels_button_.set_popup(channels);

	// Update supported options.
	sample_count_supported_ = false;

	try {
		for (auto entry : device->config_keys(ConfigKey::DEVICE_OPTIONS))
		{
			auto key = entry.first;
			auto capabilities = entry.second;
			switch (key->id()) {
			case SR_CONF_LIMIT_SAMPLES:
				if (capabilities.count(Capability::SET))
					sample_count_supported_ = true;
				break;
			case SR_CONF_LIMIT_FRAMES:
				if (capabilities.count(Capability::SET))
				{
					device->config_set(ConfigKey::LIMIT_FRAMES,
						Glib::Variant<guint64>::create(1));
					on_config_changed();
				}
				break;
			default:
				break;
			}
		}
	} catch (Error error) {}

	// Add notification of reconfigure events
	disconnect(this, SLOT(on_config_changed()));
	connect(&opts->binding(), SIGNAL(config_changed()),
		this, SLOT(on_config_changed()));

	// Update sweep timing widgets.
	update_sample_count_selector();
	update_sample_rate_selector();
}

void MainBar::commit_sample_count()
{
	uint64_t sample_count = 0;

	if (updating_sample_count_)
		return;

	const shared_ptr<Device> device = get_selected_device();
	if (!device)
		return;

	sample_count = sample_count_.value();

	// Set the sample count
	assert(!updating_sample_count_);
	updating_sample_count_ = true;
	if (sample_count_supported_)
	{
		try {
			device->config_set(ConfigKey::LIMIT_SAMPLES,
				Glib::Variant<guint64>::create(sample_count));
			on_config_changed();
		} catch (Error error) {
			qDebug() << "Failed to configure sample count.";
			return;
		}
	}
	updating_sample_count_ = false;
}

void MainBar::commit_sample_rate()
{
	uint64_t sample_rate = 0;

	if (updating_sample_rate_)
		return;

	const shared_ptr<Device> device = get_selected_device();
	if (!device)
		return;

	sample_rate = sample_rate_.value();
	if (sample_rate == 0)
		return;

	// Set the samplerate
	assert(!updating_sample_rate_);
	updating_sample_rate_ = true;
	try {
		device->config_set(ConfigKey::SAMPLERATE,
			Glib::Variant<guint64>::create(sample_rate));
		on_config_changed();
	} catch (Error error) {
		qDebug() << "Failed to configure samplerate.";
		return;
	}
	updating_sample_rate_ = false;
}

void MainBar::on_device_selected()
{
	if (updating_device_selector_)
		return;

	shared_ptr<Device> device = get_selected_device();
	if (!device)
		return;

	main_window_.select_device(device);

	update_device_config_widgets();
}

void MainBar::on_sample_count_changed()
{
	commit_sample_count();
}

void MainBar::on_sample_rate_changed()
{
	commit_sample_rate();
}

void MainBar::on_run_stop()
{
	commit_sample_count();
	commit_sample_rate();	
	main_window_.run_stop();
}

void MainBar::on_config_changed()
{
	commit_sample_count();
	update_sample_count_selector();	
	commit_sample_rate();	
	update_sample_rate_selector();
}

bool MainBar::eventFilter(QObject *watched, QEvent *event)
{
	if ((watched == &sample_count_ || watched == &sample_rate_) &&
		(event->type() == QEvent::ToolTip)) {
		double sec = (double)sample_count_.value() / sample_rate_.value();
		QHelpEvent *help_event = static_cast<QHelpEvent*>(event);

		QString str = tr("Total sampling time: %1").arg(pv::util::format_second(sec));
		QToolTip::showText(help_event->globalPos(), str);

		return true;
	}

	return false;
}

} // namespace toolbars
} // 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, write to the Free Software
	18	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	19	*/
	20
	21	#include <extdef.h>
	22
	23	#include <assert.h>
	24
	25	#include <QAction>
	26	#include <QDebug>
	27	#include <QHelpEvent>
	28	#include <QMenu>
	29	#include <QToolTip>
	30
	31	#include "mainbar.hpp"
	32
	33	#include <pv/devicemanager.hpp>
	34	#include <pv/mainwindow.hpp>
	35	#include <pv/popups/deviceoptions.hpp>
	36	#include <pv/popups/channels.hpp>
	37	#include <pv/util.hpp>
	38
	39	#include <libsigrok/libsigrok.hpp>
	40
	41	using std::map;
	42	using std::vector;
	43	using std::max;
	44	using std::min;
	45	using std::shared_ptr;
	46	using std::string;
	47
	48	using sigrok::Capability;
	49	using sigrok::ConfigKey;
	50	using sigrok::Device;
	51	using sigrok::Error;
	52
	53	namespace pv {
	54	namespace toolbars {
	55
	56	const uint64_t MainBar::MinSampleCount = 100ULL;
	57	const uint64_t MainBar::MaxSampleCount = 1000000000000ULL;
	58	const uint64_t MainBar::DefaultSampleCount = 1000000;
	59
	60	MainBar::MainBar(Session &session, MainWindow &main_window) :
	61	QToolBar("Sampling Bar", &main_window),
	62	session_(session),
	63	main_window_(main_window),
	64	device_selector_(this),
	65	updating_device_selector_(false),
	66	configure_button_(this),
	67	configure_button_action_(NULL),
	68	channels_button_(this),
	69	sample_count_(" samples", this),
	70	sample_rate_("Hz", this),
	71	updating_sample_rate_(false),
	72	updating_sample_count_(false),
	73	sample_count_supported_(false),
	74	icon_red_(":/icons/status-red.svg"),
	75	icon_green_(":/icons/status-green.svg"),
	76	icon_grey_(":/icons/status-grey.svg"),
	77	run_stop_button_(this),
	78	menu_button_(this)
	79	{
	80	setObjectName(QString::fromUtf8("MainBar"));
	81
	82	setMovable(false);
	83	setFloatable(false);
	84
	85	// Setup the decoder button
	86	#ifdef ENABLE_DECODE
	87	QToolButton *add_decoder_button = new QToolButton(this);
	88	add_decoder_button->setIcon(QIcon::fromTheme("add-decoder",
	89	QIcon(":/icons/add-decoder.svg")));
	90	add_decoder_button->setPopupMode(QToolButton::InstantPopup);
	91	add_decoder_button->setMenu(main_window_.menu_decoder_add());
	92	#endif
	93
	94	// Setup the menu
	95	QMenu *const menu = new QMenu(this);
	96
	97	QMenu *const menu_help = new QMenu;
	98	menu_help->setTitle(tr("&Help"));
	99	menu_help->addAction(main_window.action_about());
	100
	101	menu->addAction(menu_help->menuAction());
	102	menu->addSeparator();
	103	menu->addAction(main_window.action_quit());
	104
	105	menu_button_.setMenu(menu);
	106	menu_button_.setPopupMode(QToolButton::InstantPopup);
	107	menu_button_.setIcon(QIcon::fromTheme("menu",
	108	QIcon(":/icons/menu.svg")));
	109
	110	// Setup the toolbar
	111	addAction(main_window.action_open());
	112	addAction(main_window.action_save_as());
	113	addSeparator();
	114	addAction(main_window.action_view_zoom_in());
	115	addAction(main_window.action_view_zoom_out());
	116	addAction(main_window.action_view_zoom_fit());
	117	addAction(main_window.action_view_zoom_one_to_one());
	118	addSeparator();
	119	addAction(main_window.action_view_show_cursors());
	120	addSeparator();
	121
	122	connect(&run_stop_button_, SIGNAL(clicked()),
	123	this, SLOT(on_run_stop()));
	124	connect(&device_selector_, SIGNAL(currentIndexChanged (int)),
	125	this, SLOT(on_device_selected()));
	126	connect(&sample_count_, SIGNAL(value_changed()),
	127	this, SLOT(on_sample_count_changed()));
	128	connect(&sample_rate_, SIGNAL(value_changed()),
	129	this, SLOT(on_sample_rate_changed()));
	130
	131	sample_count_.show_min_max_step(0, UINT64_MAX, 1);
	132
	133	set_capture_state(pv::Session::Stopped);
	134
	135	configure_button_.setIcon(QIcon::fromTheme("configure",
	136	QIcon(":/icons/configure.png")));
	137
	138	channels_button_.setIcon(QIcon::fromTheme("channels",
	139	QIcon(":/icons/channels.svg")));
	140
	141	run_stop_button_.setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
	142
	143	addWidget(&device_selector_);
	144	configure_button_action_ = addWidget(&configure_button_);
	145	addWidget(&channels_button_);
	146	addWidget(&sample_count_);
	147	addWidget(&sample_rate_);
	148	addWidget(&run_stop_button_);
	149	#ifdef ENABLE_DECODE
	150	addSeparator();
	151	addWidget(add_decoder_button);
	152	#endif
	153
	154	QWidget *const spacer = new QWidget();
	155	spacer->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
	156	addWidget(spacer);
	157
	158	addWidget(&menu_button_);
	159
	160	sample_count_.installEventFilter(this);
	161	sample_rate_.installEventFilter(this);
	162	}
	163
	164	void MainBar::set_device_list(
	165	const std::list< std::shared_ptr<sigrok::Device> > &devices,
	166	shared_ptr<Device> selected)
	167	{
	168	int selected_index = -1;
	169
	170	assert(selected);
	171
	172	updating_device_selector_ = true;
	173
	174	device_selector_.clear();
	175
	176	for (auto device : devices) {
	177	assert(device);
	178
	179	string display_name =
	180	session_.device_manager().get_display_name(device);
	181
	182	if (selected == device)
	183	selected_index = device_selector_.count();
	184
	185	device_selector_.addItem(display_name.c_str(),
	186	qVariantFromValue(device));
	187	}
	188
	189	// The selected device should have been in the list
	190	assert(selected_index != -1);
	191	device_selector_.setCurrentIndex(selected_index);
	192
	193	update_device_config_widgets();
	194
	195	updating_device_selector_ = false;
	196	}
	197
	198	shared_ptr<Device> MainBar::get_selected_device() const
	199	{
	200	const int index = device_selector_.currentIndex();
	201	if (index < 0)
	202	return shared_ptr<Device>();
	203
	204	return device_selector_.itemData(index).value<shared_ptr<Device>>();
	205	}
	206
	207	void MainBar::set_capture_state(pv::Session::capture_state state)
	208	{
	209	const QIcon *icons[] = {&icon_grey_, &icon_red_, &icon_green_};
	210	run_stop_button_.setIcon(*icons[state]);
	211	run_stop_button_.setText((state == pv::Session::Stopped) ?
	212	tr("Run") : tr("Stop"));
	213	run_stop_button_.setShortcut(QKeySequence(Qt::Key_Space));
	214	}
	215
	216	void MainBar::update_sample_rate_selector()
	217	{
	218	Glib::VariantContainerBase gvar_dict;
	219	GVariant *gvar_list;
	220	const uint64_t *elements = NULL;
	221	gsize num_elements;
	222
	223	if (updating_sample_rate_)
	224	return;
	225
	226	const shared_ptr<Device> device = get_selected_device();
	227	if (!device)
	228	return;
	229
	230	assert(!updating_sample_rate_);
	231	updating_sample_rate_ = true;
	232
	233	const auto keys = device->config_keys(ConfigKey::DEVICE_OPTIONS);
	234	const auto iter = keys.find(ConfigKey::SAMPLERATE);
	235	if (iter != keys.end() &&
	236	(iter).second.find(sigrok::LIST) != (iter).second.end()) {
	237	const auto keys = device->config_keys(
	238	ConfigKey::DEVICE_OPTIONS);
	239	try {
	240	gvar_dict = device->config_list(ConfigKey::SAMPLERATE);
	241	} catch(const sigrok::Error &e) {
	242	// Failed to enunmerate samplerate
	243	(void)e;
	244	}
	245	}
	246
	247	if (!gvar_dict) {
	248	sample_rate_.show_none();
	249	updating_sample_rate_ = false;
	250	return;
	251	}
	252
	253	if ((gvar_list = g_variant_lookup_value(gvar_dict.gobj(),
	254	"samplerate-steps", G_VARIANT_TYPE("at"))))
	255	{
	256	elements = (const uint64_t *)g_variant_get_fixed_array(
	257	gvar_list, &num_elements, sizeof(uint64_t));
	258
	259	const uint64_t min = elements[0];
	260	const uint64_t max = elements[1];
	261	const uint64_t step = elements[2];
	262
	263	g_variant_unref(gvar_list);
	264
	265	assert(min > 0);
	266	assert(max > 0);
	267	assert(max > min);
	268	assert(step > 0);
	269
	270	if (step == 1)
	271	sample_rate_.show_125_list(min, max);
	272	else
	273	{
	274	// When the step is not 1, we cam't make a 1-2-5-10
	275	// list of sample rates, because we may not be able to
	276	// make round numbers. Therefore in this case, show a
	277	// spin box.
	278	sample_rate_.show_min_max_step(min, max, step);
	279	}
	280	}
	281	else if ((gvar_list = g_variant_lookup_value(gvar_dict.gobj(),
	282	"samplerates", G_VARIANT_TYPE("at"))))
	283	{
	284	elements = (const uint64_t *)g_variant_get_fixed_array(
	285	gvar_list, &num_elements, sizeof(uint64_t));
	286	sample_rate_.show_list(elements, num_elements);
	287	g_variant_unref(gvar_list);
	288	}
	289	updating_sample_rate_ = false;
	290
	291	update_sample_rate_selector_value();
	292	}
	293
	294	void MainBar::update_sample_rate_selector_value()
	295	{
	296	if (updating_sample_rate_)
	297	return;
	298
	299	const shared_ptr<Device> device = get_selected_device();
	300	if (!device)
	301	return;
	302
	303	try {
	304	auto gvar = device->config_get(ConfigKey::SAMPLERATE);
	305	uint64_t samplerate =
	306	Glib::VariantBase::cast_dynamic<Glib::Variant<guint64>>(gvar).get();
	307	assert(!updating_sample_rate_);
	308	updating_sample_rate_ = true;
	309	sample_rate_.set_value(samplerate);
	310	updating_sample_rate_ = false;
	311	} catch (Error error) {
	312	qDebug() << "WARNING: Failed to get value of sample rate";
	313	return;
	314	}
	315	}
	316
	317	void MainBar::update_sample_count_selector()
	318	{
	319	if (updating_sample_count_)
	320	return;
	321
	322	const shared_ptr<Device> device = get_selected_device();
	323	if (!device)
	324	return;
	325
	326	assert(!updating_sample_count_);
	327	updating_sample_count_ = true;
	328
	329	if (!sample_count_supported_)
	330	{
	331	sample_count_.show_none();
	332	updating_sample_count_ = false;
	333	return;
	334	}
	335
	336	uint64_t sample_count = sample_count_.value();
	337	uint64_t min_sample_count = 0;
	338	uint64_t max_sample_count = MaxSampleCount;
	339
	340	if (sample_count == 0)
	341	sample_count = DefaultSampleCount;
	342
	343	const auto keys = device->config_keys(ConfigKey::DEVICE_OPTIONS);
	344	const auto iter = keys.find(ConfigKey::LIMIT_SAMPLES);
	345	if (iter != keys.end() &&
	346	(iter).second.find(sigrok::LIST) != (iter).second.end()) {
	347	try {
	348	auto gvar =
	349	device->config_list(ConfigKey::LIMIT_SAMPLES);
	350	if (gvar)
	351	g_variant_get(gvar.gobj(), "(tt)",
	352	&min_sample_count, &max_sample_count);
	353	} catch(const sigrok::Error &e) {
	354	// Failed to query sample limit
	355	(void)e;
	356	}
	357	}
	358
	359	min_sample_count = min(max(min_sample_count, MinSampleCount),
	360	max_sample_count);
	361
	362	sample_count_.show_125_list(
	363	min_sample_count, max_sample_count);
	364
	365	try {
	366	auto gvar = device->config_get(ConfigKey::LIMIT_SAMPLES);
	367	sample_count = g_variant_get_uint64(gvar.gobj());
	368	if (sample_count == 0)
	369	sample_count = DefaultSampleCount;
	370	sample_count = min(max(sample_count, MinSampleCount),
	371	max_sample_count);
	372	} catch (Error error) {}
	373
	374	sample_count_.set_value(sample_count);
	375
	376	updating_sample_count_ = false;
	377	}
	378
	379	void MainBar::update_device_config_widgets()
	380	{
	381	using namespace pv::popups;
	382
	383	const shared_ptr<Device> device = get_selected_device();
	384	if (!device)
	385	return;
	386
	387	// Update the configure popup
	388	DeviceOptions *const opts = new DeviceOptions(device, this);
	389	configure_button_action_->setVisible(
	390	!opts->binding().properties().empty());
	391	configure_button_.set_popup(opts);
	392
	393	// Update the channels popup
	394	Channels *const channels = new Channels(session_, this);
	395	channels_button_.set_popup(channels);
	396
	397	// Update supported options.
	398	sample_count_supported_ = false;
	399
	400	try {
	401	for (auto entry : device->config_keys(ConfigKey::DEVICE_OPTIONS))
	402	{
	403	auto key = entry.first;
	404	auto capabilities = entry.second;
	405	switch (key->id()) {
	406	case SR_CONF_LIMIT_SAMPLES:
	407	if (capabilities.count(Capability::SET))
	408	sample_count_supported_ = true;
	409	break;
	410	case SR_CONF_LIMIT_FRAMES:
	411	if (capabilities.count(Capability::SET))
	412	{
	413	device->config_set(ConfigKey::LIMIT_FRAMES,
	414	Glib::Variant<guint64>::create(1));
	415	on_config_changed();
	416	}
	417	break;
	418	default:
	419	break;
	420	}
	421	}
	422	} catch (Error error) {}
	423
	424	// Add notification of reconfigure events
	425	disconnect(this, SLOT(on_config_changed()));
	426	connect(&opts->binding(), SIGNAL(config_changed()),
	427	this, SLOT(on_config_changed()));
	428
	429	// Update sweep timing widgets.
	430	update_sample_count_selector();
	431	update_sample_rate_selector();
	432	}
	433
	434	void MainBar::commit_sample_count()
	435	{
	436	uint64_t sample_count = 0;
	437
	438	if (updating_sample_count_)
	439	return;
	440
	441	const shared_ptr<Device> device = get_selected_device();
	442	if (!device)
	443	return;
	444
	445	sample_count = sample_count_.value();
	446
	447	// Set the sample count
	448	assert(!updating_sample_count_);
	449	updating_sample_count_ = true;
	450	if (sample_count_supported_)
	451	{
	452	try {
	453	device->config_set(ConfigKey::LIMIT_SAMPLES,
	454	Glib::Variant<guint64>::create(sample_count));
	455	on_config_changed();
	456	} catch (Error error) {
	457	qDebug() << "Failed to configure sample count.";
	458	return;
	459	}
	460	}
	461	updating_sample_count_ = false;
	462	}
	463
	464	void MainBar::commit_sample_rate()
	465	{
	466	uint64_t sample_rate = 0;
	467
	468	if (updating_sample_rate_)
	469	return;
	470
	471	const shared_ptr<Device> device = get_selected_device();
	472	if (!device)
	473	return;
	474
	475	sample_rate = sample_rate_.value();
	476	if (sample_rate == 0)
	477	return;
	478
	479	// Set the samplerate
	480	assert(!updating_sample_rate_);
	481	updating_sample_rate_ = true;
	482	try {
	483	device->config_set(ConfigKey::SAMPLERATE,
	484	Glib::Variant<guint64>::create(sample_rate));
	485	on_config_changed();
	486	} catch (Error error) {
	487	qDebug() << "Failed to configure samplerate.";
	488	return;
	489	}
	490	updating_sample_rate_ = false;
	491	}
	492
	493	void MainBar::on_device_selected()
	494	{
	495	if (updating_device_selector_)
	496	return;
	497
	498	shared_ptr<Device> device = get_selected_device();
	499	if (!device)
	500	return;
	501
	502	main_window_.select_device(device);
	503
	504	update_device_config_widgets();
	505	}
	506
	507	void MainBar::on_sample_count_changed()
	508	{
	509	commit_sample_count();
	510	}
	511
	512	void MainBar::on_sample_rate_changed()
	513	{
	514	commit_sample_rate();
	515	}
	516
	517	void MainBar::on_run_stop()
	518	{
	519	commit_sample_count();
	520	commit_sample_rate();
	521	main_window_.run_stop();
	522	}
	523
	524	void MainBar::on_config_changed()
	525	{
	526	commit_sample_count();
	527	update_sample_count_selector();
	528	commit_sample_rate();
	529	update_sample_rate_selector();
	530	}
	531
	532	bool MainBar::eventFilter(QObject watched, QEvent event)
	533	{
	534	if ((watched == &sample_count_ \|\| watched == &sample_rate_) &&
	535	(event->type() == QEvent::ToolTip)) {
	536	double sec = (double)sample_count_.value() / sample_rate_.value();
	537	QHelpEvent help_event = static_cast<QHelpEvent>(event);
	538
	539	QString str = tr("Total sampling time: %1").arg(pv::util::format_second(sec));
	540	QToolTip::showText(help_event->globalPos(), str);
	541
	542	return true;
	543	}
	544
	545	return false;
	546	}
	547
	548	} // namespace toolbars
	549	} // namespace pv