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

/*
 * This file is part of the PulseView project.
 *
 * Copyright (C) 2012-2015 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 <algorithm>
#include <cassert>

#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 <libsigrokcxx/libsigrokcxx.hpp>

using std::back_inserter;
using std::copy;
using std::list;
using std::map;
using std::max;
using std::min;
using std::shared_ptr;
using std::string;
using std::vector;

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, session.device_manager(),
		main_window.action_connect()),
	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);
	setContextMenuPolicy(Qt::PreventContextMenu);

	// Device selector menu
	connect(&device_selector_, SIGNAL(device_selected()),
		this, SLOT(on_device_selected()));

	// 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(&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::update_device_list()
{
	DeviceManager &mgr = session_.device_manager();
	shared_ptr<Device> selected_device = session_.device();
	list< shared_ptr<Device> > devs;

	copy(mgr.devices().begin(), mgr.devices().end(), back_inserter(devs));

	if (std::find(devs.begin(), devs.end(), selected_device) == devs.end())
		devs.push_back(selected_device);
	assert(selected_device);

	device_selector_.set_device_list(devs, selected_device);
	update_device_config_widgets();
}


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 = device_selector_.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 = device_selector_.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 = device_selector_.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 = device_selector_.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 = device_selector_.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 = device_selector_.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()
{
	shared_ptr<Device> device = device_selector_.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) 2012-2015 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 <algorithm>
	24	#include <cassert>
	25
	26	#include <QAction>
	27	#include <QDebug>
	28	#include <QHelpEvent>
	29	#include <QMenu>
	30	#include <QToolTip>
	31
	32	#include "mainbar.hpp"
	33
	34	#include <pv/devicemanager.hpp>
	35	#include <pv/mainwindow.hpp>
	36	#include <pv/popups/deviceoptions.hpp>
	37	#include <pv/popups/channels.hpp>
	38	#include <pv/util.hpp>
	39
	40	#include <libsigrokcxx/libsigrokcxx.hpp>
	41
	42	using std::back_inserter;
	43	using std::copy;
	44	using std::list;
	45	using std::map;
	46	using std::max;
	47	using std::min;
	48	using std::shared_ptr;
	49	using std::string;
	50	using std::vector;
	51
	52	using sigrok::Capability;
	53	using sigrok::ConfigKey;
	54	using sigrok::Device;
	55	using sigrok::Error;
	56
	57	namespace pv {
	58	namespace toolbars {
	59
	60	const uint64_t MainBar::MinSampleCount = 100ULL;
	61	const uint64_t MainBar::MaxSampleCount = 1000000000000ULL;
	62	const uint64_t MainBar::DefaultSampleCount = 1000000;
	63
	64	MainBar::MainBar(Session &session, MainWindow &main_window) :
	65	QToolBar("Sampling Bar", &main_window),
	66	session_(session),
	67	main_window_(main_window),
	68	device_selector_(this, session.device_manager(),
	69	main_window.action_connect()),
	70	configure_button_(this),
	71	configure_button_action_(NULL),
	72	channels_button_(this),
	73	sample_count_(" samples", this),
	74	sample_rate_("Hz", this),
	75	updating_sample_rate_(false),
	76	updating_sample_count_(false),
	77	sample_count_supported_(false),
	78	icon_red_(":/icons/status-red.svg"),
	79	icon_green_(":/icons/status-green.svg"),
	80	icon_grey_(":/icons/status-grey.svg"),
	81	run_stop_button_(this),
	82	menu_button_(this)
	83	{
	84	setObjectName(QString::fromUtf8("MainBar"));
	85
	86	setMovable(false);
	87	setFloatable(false);
	88	setContextMenuPolicy(Qt::PreventContextMenu);
	89
	90	// Device selector menu
	91	connect(&device_selector_, SIGNAL(device_selected()),
	92	this, SLOT(on_device_selected()));
	93
	94	// Setup the decoder button
	95	#ifdef ENABLE_DECODE
	96	QToolButton *add_decoder_button = new QToolButton(this);
	97	add_decoder_button->setIcon(QIcon::fromTheme("add-decoder",
	98	QIcon(":/icons/add-decoder.svg")));
	99	add_decoder_button->setPopupMode(QToolButton::InstantPopup);
	100	add_decoder_button->setMenu(main_window_.menu_decoder_add());
	101	#endif
	102
	103	// Setup the menu
	104	QMenu *const menu = new QMenu(this);
	105
	106	QMenu *const menu_help = new QMenu;
	107	menu_help->setTitle(tr("&Help"));
	108	menu_help->addAction(main_window.action_about());
	109
	110	menu->addAction(menu_help->menuAction());
	111	menu->addSeparator();
	112	menu->addAction(main_window.action_quit());
	113
	114	menu_button_.setMenu(menu);
	115	menu_button_.setPopupMode(QToolButton::InstantPopup);
	116	menu_button_.setIcon(QIcon::fromTheme("menu",
	117	QIcon(":/icons/menu.svg")));
	118
	119	// Setup the toolbar
	120	addAction(main_window.action_open());
	121	addAction(main_window.action_save_as());
	122	addSeparator();
	123	addAction(main_window.action_view_zoom_in());
	124	addAction(main_window.action_view_zoom_out());
	125	addAction(main_window.action_view_zoom_fit());
	126	addAction(main_window.action_view_zoom_one_to_one());
	127	addSeparator();
	128	addAction(main_window.action_view_show_cursors());
	129	addSeparator();
	130
	131	connect(&run_stop_button_, SIGNAL(clicked()),
	132	this, SLOT(on_run_stop()));
	133	connect(&sample_count_, SIGNAL(value_changed()),
	134	this, SLOT(on_sample_count_changed()));
	135	connect(&sample_rate_, SIGNAL(value_changed()),
	136	this, SLOT(on_sample_rate_changed()));
	137
	138	sample_count_.show_min_max_step(0, UINT64_MAX, 1);
	139
	140	set_capture_state(pv::Session::Stopped);
	141
	142	configure_button_.setIcon(QIcon::fromTheme("configure",
	143	QIcon(":/icons/configure.png")));
	144
	145	channels_button_.setIcon(QIcon::fromTheme("channels",
	146	QIcon(":/icons/channels.svg")));
	147
	148	run_stop_button_.setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
	149
	150	addWidget(&device_selector_);
	151	configure_button_action_ = addWidget(&configure_button_);
	152	addWidget(&channels_button_);
	153	addWidget(&sample_count_);
	154	addWidget(&sample_rate_);
	155	addWidget(&run_stop_button_);
	156	#ifdef ENABLE_DECODE
	157	addSeparator();
	158	addWidget(add_decoder_button);
	159	#endif
	160
	161	QWidget *const spacer = new QWidget();
	162	spacer->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
	163	addWidget(spacer);
	164
	165	addWidget(&menu_button_);
	166
	167	sample_count_.installEventFilter(this);
	168	sample_rate_.installEventFilter(this);
	169	}
	170
	171	void MainBar::update_device_list()
	172	{
	173	DeviceManager &mgr = session_.device_manager();
	174	shared_ptr<Device> selected_device = session_.device();
	175	list< shared_ptr<Device> > devs;
	176
	177	copy(mgr.devices().begin(), mgr.devices().end(), back_inserter(devs));
	178
	179	if (std::find(devs.begin(), devs.end(), selected_device) == devs.end())
	180	devs.push_back(selected_device);
	181	assert(selected_device);
	182
	183	device_selector_.set_device_list(devs, selected_device);
	184	update_device_config_widgets();
	185	}
	186
	187
	188	void MainBar::set_capture_state(pv::Session::capture_state state)
	189	{
	190	const QIcon *icons[] = {&icon_grey_, &icon_red_, &icon_green_};
	191	run_stop_button_.setIcon(*icons[state]);
	192	run_stop_button_.setText((state == pv::Session::Stopped) ?
	193	tr("Run") : tr("Stop"));
	194	run_stop_button_.setShortcut(QKeySequence(Qt::Key_Space));
	195	}
	196
	197	void MainBar::update_sample_rate_selector()
	198	{
	199	Glib::VariantContainerBase gvar_dict;
	200	GVariant *gvar_list;
	201	const uint64_t *elements = NULL;
	202	gsize num_elements;
	203
	204	if (updating_sample_rate_)
	205	return;
	206
	207	const shared_ptr<Device> device = device_selector_.selected_device();
	208	if (!device)
	209	return;
	210
	211	assert(!updating_sample_rate_);
	212	updating_sample_rate_ = true;
	213
	214	const auto keys = device->config_keys(ConfigKey::DEVICE_OPTIONS);
	215	const auto iter = keys.find(ConfigKey::SAMPLERATE);
	216	if (iter != keys.end() &&
	217	(iter).second.find(sigrok::LIST) != (iter).second.end()) {
	218	const auto keys = device->config_keys(
	219	ConfigKey::DEVICE_OPTIONS);
	220	try {
	221	gvar_dict = device->config_list(ConfigKey::SAMPLERATE);
	222	} catch(const sigrok::Error &e) {
	223	// Failed to enunmerate samplerate
	224	(void)e;
	225	}
	226	}
	227
	228	if (!gvar_dict) {
	229	sample_rate_.show_none();
	230	updating_sample_rate_ = false;
	231	return;
	232	}
	233
	234	if ((gvar_list = g_variant_lookup_value(gvar_dict.gobj(),
	235	"samplerate-steps", G_VARIANT_TYPE("at"))))
	236	{
	237	elements = (const uint64_t *)g_variant_get_fixed_array(
	238	gvar_list, &num_elements, sizeof(uint64_t));
	239
	240	const uint64_t min = elements[0];
	241	const uint64_t max = elements[1];
	242	const uint64_t step = elements[2];
	243
	244	g_variant_unref(gvar_list);
	245
	246	assert(min > 0);
	247	assert(max > 0);
	248	assert(max > min);
	249	assert(step > 0);
	250
	251	if (step == 1)
	252	sample_rate_.show_125_list(min, max);
	253	else
	254	{
	255	// When the step is not 1, we cam't make a 1-2-5-10
	256	// list of sample rates, because we may not be able to
	257	// make round numbers. Therefore in this case, show a
	258	// spin box.
	259	sample_rate_.show_min_max_step(min, max, step);
	260	}
	261	}
	262	else if ((gvar_list = g_variant_lookup_value(gvar_dict.gobj(),
	263	"samplerates", G_VARIANT_TYPE("at"))))
	264	{
	265	elements = (const uint64_t *)g_variant_get_fixed_array(
	266	gvar_list, &num_elements, sizeof(uint64_t));
	267	sample_rate_.show_list(elements, num_elements);
	268	g_variant_unref(gvar_list);
	269	}
	270	updating_sample_rate_ = false;
	271
	272	update_sample_rate_selector_value();
	273	}
	274
	275	void MainBar::update_sample_rate_selector_value()
	276	{
	277	if (updating_sample_rate_)
	278	return;
	279
	280	const shared_ptr<Device> device = device_selector_.selected_device();
	281	if (!device)
	282	return;
	283
	284	try {
	285	auto gvar = device->config_get(ConfigKey::SAMPLERATE);
	286	uint64_t samplerate =
	287	Glib::VariantBase::cast_dynamic<Glib::Variant<guint64>>(gvar).get();
	288	assert(!updating_sample_rate_);
	289	updating_sample_rate_ = true;
	290	sample_rate_.set_value(samplerate);
	291	updating_sample_rate_ = false;
	292	} catch (Error error) {
	293	qDebug() << "WARNING: Failed to get value of sample rate";
	294	return;
	295	}
	296	}
	297
	298	void MainBar::update_sample_count_selector()
	299	{
	300	if (updating_sample_count_)
	301	return;
	302
	303	const shared_ptr<Device> device = device_selector_.selected_device();
	304	if (!device)
	305	return;
	306
	307	assert(!updating_sample_count_);
	308	updating_sample_count_ = true;
	309
	310	if (!sample_count_supported_)
	311	{
	312	sample_count_.show_none();
	313	updating_sample_count_ = false;
	314	return;
	315	}
	316
	317	uint64_t sample_count = sample_count_.value();
	318	uint64_t min_sample_count = 0;
	319	uint64_t max_sample_count = MaxSampleCount;
	320
	321	if (sample_count == 0)
	322	sample_count = DefaultSampleCount;
	323
	324	const auto keys = device->config_keys(ConfigKey::DEVICE_OPTIONS);
	325	const auto iter = keys.find(ConfigKey::LIMIT_SAMPLES);
	326	if (iter != keys.end() &&
	327	(iter).second.find(sigrok::LIST) != (iter).second.end()) {
	328	try {
	329	auto gvar =
	330	device->config_list(ConfigKey::LIMIT_SAMPLES);
	331	if (gvar)
	332	g_variant_get(gvar.gobj(), "(tt)",
	333	&min_sample_count, &max_sample_count);
	334	} catch(const sigrok::Error &e) {
	335	// Failed to query sample limit
	336	(void)e;
	337	}
	338	}
	339
	340	min_sample_count = min(max(min_sample_count, MinSampleCount),
	341	max_sample_count);
	342
	343	sample_count_.show_125_list(
	344	min_sample_count, max_sample_count);
	345
	346	try {
	347	auto gvar = device->config_get(ConfigKey::LIMIT_SAMPLES);
	348	sample_count = g_variant_get_uint64(gvar.gobj());
	349	if (sample_count == 0)
	350	sample_count = DefaultSampleCount;
	351	sample_count = min(max(sample_count, MinSampleCount),
	352	max_sample_count);
	353	} catch (Error error) {}
	354
	355	sample_count_.set_value(sample_count);
	356
	357	updating_sample_count_ = false;
	358	}
	359
	360	void MainBar::update_device_config_widgets()
	361	{
	362	using namespace pv::popups;
	363
	364	const shared_ptr<Device> device = device_selector_.selected_device();
	365	if (!device)
	366	return;
	367
	368	// Update the configure popup
	369	DeviceOptions *const opts = new DeviceOptions(device, this);
	370	configure_button_action_->setVisible(
	371	!opts->binding().properties().empty());
	372	configure_button_.set_popup(opts);
	373
	374	// Update the channels popup
	375	Channels *const channels = new Channels(session_, this);
	376	channels_button_.set_popup(channels);
	377
	378	// Update supported options.
	379	sample_count_supported_ = false;
	380
	381	try {
	382	for (auto entry : device->config_keys(ConfigKey::DEVICE_OPTIONS))
	383	{
	384	auto key = entry.first;
	385	auto capabilities = entry.second;
	386	switch (key->id()) {
	387	case SR_CONF_LIMIT_SAMPLES:
	388	if (capabilities.count(Capability::SET))
	389	sample_count_supported_ = true;
	390	break;
	391	case SR_CONF_LIMIT_FRAMES:
	392	if (capabilities.count(Capability::SET))
	393	{
	394	device->config_set(ConfigKey::LIMIT_FRAMES,
	395	Glib::Variant<guint64>::create(1));
	396	on_config_changed();
	397	}
	398	break;
	399	default:
	400	break;
	401	}
	402	}
	403	} catch (Error error) {}
	404
	405	// Add notification of reconfigure events
	406	disconnect(this, SLOT(on_config_changed()));
	407	connect(&opts->binding(), SIGNAL(config_changed()),
	408	this, SLOT(on_config_changed()));
	409
	410	// Update sweep timing widgets.
	411	update_sample_count_selector();
	412	update_sample_rate_selector();
	413	}
	414
	415	void MainBar::commit_sample_count()
	416	{
	417	uint64_t sample_count = 0;
	418
	419	if (updating_sample_count_)
	420	return;
	421
	422	const shared_ptr<Device> device = device_selector_.selected_device();
	423	if (!device)
	424	return;
	425
	426	sample_count = sample_count_.value();
	427
	428	// Set the sample count
	429	assert(!updating_sample_count_);
	430	updating_sample_count_ = true;
	431	if (sample_count_supported_)
	432	{
	433	try {
	434	device->config_set(ConfigKey::LIMIT_SAMPLES,
	435	Glib::Variant<guint64>::create(sample_count));
	436	on_config_changed();
	437	} catch (Error error) {
	438	qDebug() << "Failed to configure sample count.";
	439	return;
	440	}
	441	}
	442	updating_sample_count_ = false;
	443	}
	444
	445	void MainBar::commit_sample_rate()
	446	{
	447	uint64_t sample_rate = 0;
	448
	449	if (updating_sample_rate_)
	450	return;
	451
	452	const shared_ptr<Device> device = device_selector_.selected_device();
	453	if (!device)
	454	return;
	455
	456	sample_rate = sample_rate_.value();
	457	if (sample_rate == 0)
	458	return;
	459
	460	// Set the samplerate
	461	assert(!updating_sample_rate_);
	462	updating_sample_rate_ = true;
	463	try {
	464	device->config_set(ConfigKey::SAMPLERATE,
	465	Glib::Variant<guint64>::create(sample_rate));
	466	on_config_changed();
	467	} catch (Error error) {
	468	qDebug() << "Failed to configure samplerate.";
	469	return;
	470	}
	471	updating_sample_rate_ = false;
	472	}
	473
	474	void MainBar::on_device_selected()
	475	{
	476	shared_ptr<Device> device = device_selector_.selected_device();
	477	if (!device)
	478	return;
	479
	480	main_window_.select_device(device);
	481
	482	update_device_config_widgets();
	483	}
	484
	485	void MainBar::on_sample_count_changed()
	486	{
	487	commit_sample_count();
	488	}
	489
	490	void MainBar::on_sample_rate_changed()
	491	{
	492	commit_sample_rate();
	493	}
	494
	495	void MainBar::on_run_stop()
	496	{
	497	commit_sample_count();
	498	commit_sample_rate();
	499	main_window_.run_stop();
	500	}
	501
	502	void MainBar::on_config_changed()
	503	{
	504	commit_sample_count();
	505	update_sample_count_selector();
	506	commit_sample_rate();
	507	update_sample_rate_selector();
	508	}
	509
	510	bool MainBar::eventFilter(QObject watched, QEvent event)
	511	{
	512	if ((watched == &sample_count_ \|\| watched == &sample_rate_) &&
	513	(event->type() == QEvent::ToolTip)) {
	514	double sec = (double)sample_count_.value() / sample_rate_.value();
	515	QHelpEvent help_event = static_cast<QHelpEvent>(event);
	516
	517	QString str = tr("Total sampling time: %1").arg(pv::util::format_second(sec));
	518	QToolTip::showText(help_event->globalPos(), str);
	519
	520	return true;
	521	}
	522
	523	return false;
	524	}
	525
	526	} // namespace toolbars
	527	} // namespace pv