[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 <pv/widgets/exportmenu.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);

	// Save button
	QToolButton *const save_button = new QToolButton(this);

	widgets::ExportMenu *export_menu = new widgets::ExportMenu(this,
		session.device_manager().context(),
		main_window.action_save_as());
	connect(export_menu,
		SIGNAL(format_selected(std::shared_ptr<sigrok::OutputFormat>)),
		&main_window_,
		SLOT(export_file(std::shared_ptr<sigrok::OutputFormat>)));

	save_button->setMenu(export_menu);
	save_button->setDefaultAction(main_window.action_save_as());
	save_button->setPopupMode(QToolButton::MenuButtonPopup);

	// 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());
	addWidget(save_button);
	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()) {
		try {
			gvar_dict = device->config_list(ConfigKey::SAMPLERATE);
		} catch(const sigrok::Error &e) {
			// Failed to enunmerate samplerate
			(void)e;
		}
	}

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