[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/devices/hardwaredevice.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::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<devices::Device> selected_device = session_.device();
	list< shared_ptr<devices::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<devices::Device> device =
		device_selector_.selected_device();
	if (!device)
		return;

	assert(!updating_sample_rate_);
	updating_sample_rate_ = true;

	const shared_ptr<sigrok::Device> sr_dev = device->device();
	const auto keys = sr_dev->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 = sr_dev->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<devices::Device> device =
		device_selector_.selected_device();
	if (!device)
		return;

	try {
		auto gvar = device->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<devices::Device> device =
		device_selector_.selected_device();
	if (!device)
		return;

	const shared_ptr<sigrok::Device> sr_dev = device->device();

	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 = sr_dev->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 =
				sr_dev->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 = sr_dev->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<devices::Device> device =
		device_selector_.selected_device();
	if (!device)
		return;

	const shared_ptr<sigrok::Device> sr_dev = device->device();
	if (!sr_dev)
		return;

	// Update the configure popup
	DeviceOptions *const opts = new DeviceOptions(sr_dev, 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 : sr_dev->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))
				{
					sr_dev->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<devices::Device> device =
		device_selector_.selected_device();
	if (!device)
		return;

	const shared_ptr<sigrok::Device> sr_dev = device->device();

	sample_count = sample_count_.value();

	// Set the sample count
	assert(!updating_sample_count_);
	updating_sample_count_ = true;
	if (sample_count_supported_)
	{
		try {
			sr_dev->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<devices::Device> device =
		device_selector_.selected_device();
	if (!device)
		return;

	const shared_ptr<sigrok::Device> sr_dev = device->device();

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

	// Set the samplerate
	assert(!updating_sample_rate_);
	updating_sample_rate_ = true;
	try {
		sr_dev->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<devices::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/devices/hardwaredevice.hpp>
	36	#include <pv/mainwindow.hpp>
	37	#include <pv/popups/deviceoptions.hpp>
	38	#include <pv/popups/channels.hpp>
	39	#include <pv/util.hpp>
	40	#include <pv/widgets/exportmenu.hpp>
	41
	42	#include <libsigrokcxx/libsigrokcxx.hpp>
	43
	44	using std::back_inserter;
	45	using std::copy;
	46	using std::list;
	47	using std::map;
	48	using std::max;
	49	using std::min;
	50	using std::shared_ptr;
	51	using std::string;
	52	using std::vector;
	53
	54	using sigrok::Capability;
	55	using sigrok::ConfigKey;
	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<devices::Device> selected_device = session_.device();
	191	list< shared_ptr<devices::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<devices::Device> device =
	224	device_selector_.selected_device();
	225	if (!device)
	226	return;
	227
	228	assert(!updating_sample_rate_);
	229	updating_sample_rate_ = true;
	230
	231	const shared_ptr<sigrok::Device> sr_dev = device->device();
	232	const auto keys = sr_dev->config_keys(ConfigKey::DEVICE_OPTIONS);
	233	const auto iter = keys.find(ConfigKey::SAMPLERATE);
	234	if (iter != keys.end() &&
	235	(iter).second.find(sigrok::LIST) != (iter).second.end()) {
	236	try {
	237	gvar_dict = sr_dev->config_list(ConfigKey::SAMPLERATE);
	238	} catch(const sigrok::Error &e) {
	239	// Failed to enunmerate samplerate
	240	(void)e;
	241	}
	242	}
	243
	244	if (!gvar_dict.gobj()) {
	245	sample_rate_.show_none();
	246	updating_sample_rate_ = false;
	247	return;
	248	}
	249
	250	if ((gvar_list = g_variant_lookup_value(gvar_dict.gobj(),
	251	"samplerate-steps", G_VARIANT_TYPE("at"))))
	252	{
	253	elements = (const uint64_t *)g_variant_get_fixed_array(
	254	gvar_list, &num_elements, sizeof(uint64_t));
	255
	256	const uint64_t min = elements[0];
	257	const uint64_t max = elements[1];
	258	const uint64_t step = elements[2];
	259
	260	g_variant_unref(gvar_list);
	261
	262	assert(min > 0);
	263	assert(max > 0);
	264	assert(max > min);
	265	assert(step > 0);
	266
	267	if (step == 1)
	268	sample_rate_.show_125_list(min, max);
	269	else
	270	{
	271	// When the step is not 1, we cam't make a 1-2-5-10
	272	// list of sample rates, because we may not be able to
	273	// make round numbers. Therefore in this case, show a
	274	// spin box.
	275	sample_rate_.show_min_max_step(min, max, step);
	276	}
	277	}
	278	else if ((gvar_list = g_variant_lookup_value(gvar_dict.gobj(),
	279	"samplerates", G_VARIANT_TYPE("at"))))
	280	{
	281	elements = (const uint64_t *)g_variant_get_fixed_array(
	282	gvar_list, &num_elements, sizeof(uint64_t));
	283	sample_rate_.show_list(elements, num_elements);
	284	g_variant_unref(gvar_list);
	285	}
	286	updating_sample_rate_ = false;
	287
	288	update_sample_rate_selector_value();
	289	}
	290
	291	void MainBar::update_sample_rate_selector_value()
	292	{
	293	if (updating_sample_rate_)
	294	return;
	295
	296	const shared_ptr<devices::Device> device =
	297	device_selector_.selected_device();
	298	if (!device)
	299	return;
	300
	301	try {
	302	auto gvar = device->device()->config_get(ConfigKey::SAMPLERATE);
	303	uint64_t samplerate =
	304	Glib::VariantBase::cast_dynamic<Glib::Variant<guint64>>(gvar).get();
	305	assert(!updating_sample_rate_);
	306	updating_sample_rate_ = true;
	307	sample_rate_.set_value(samplerate);
	308	updating_sample_rate_ = false;
	309	} catch (Error error) {
	310	qDebug() << "WARNING: Failed to get value of sample rate";
	311	return;
	312	}
	313	}
	314
	315	void MainBar::update_sample_count_selector()
	316	{
	317	if (updating_sample_count_)
	318	return;
	319
	320	const shared_ptr<devices::Device> device =
	321	device_selector_.selected_device();
	322	if (!device)
	323	return;
	324
	325	const shared_ptr<sigrok::Device> sr_dev = device->device();
	326
	327	assert(!updating_sample_count_);
	328	updating_sample_count_ = true;
	329
	330	if (!sample_count_supported_)
	331	{
	332	sample_count_.show_none();
	333	updating_sample_count_ = false;
	334	return;
	335	}
	336
	337	uint64_t sample_count = sample_count_.value();
	338	uint64_t min_sample_count = 0;
	339	uint64_t max_sample_count = MaxSampleCount;
	340
	341	if (sample_count == 0)
	342	sample_count = DefaultSampleCount;
	343
	344	const auto keys = sr_dev->config_keys(ConfigKey::DEVICE_OPTIONS);
	345	const auto iter = keys.find(ConfigKey::LIMIT_SAMPLES);
	346	if (iter != keys.end() &&
	347	(iter).second.find(sigrok::LIST) != (iter).second.end()) {
	348	try {
	349	auto gvar =
	350	sr_dev->config_list(ConfigKey::LIMIT_SAMPLES);
	351	if (gvar.gobj())
	352	g_variant_get(gvar.gobj(), "(tt)",
	353	&min_sample_count, &max_sample_count);
	354	} catch(const sigrok::Error &e) {
	355	// Failed to query sample limit
	356	(void)e;
	357	}
	358	}
	359
	360	min_sample_count = min(max(min_sample_count, MinSampleCount),
	361	max_sample_count);
	362
	363	sample_count_.show_125_list(
	364	min_sample_count, max_sample_count);
	365
	366	try {
	367	auto gvar = sr_dev->config_get(ConfigKey::LIMIT_SAMPLES);
	368	sample_count = g_variant_get_uint64(gvar.gobj());
	369	if (sample_count == 0)
	370	sample_count = DefaultSampleCount;
	371	sample_count = min(max(sample_count, MinSampleCount),
	372	max_sample_count);
	373	} catch (Error error) {}
	374
	375	sample_count_.set_value(sample_count);
	376
	377	updating_sample_count_ = false;
	378	}
	379
	380	void MainBar::update_device_config_widgets()
	381	{
	382	using namespace pv::popups;
	383
	384	const shared_ptr<devices::Device> device =
	385	device_selector_.selected_device();
	386	if (!device)
	387	return;
	388
	389	const shared_ptr<sigrok::Device> sr_dev = device->device();
	390	if (!sr_dev)
	391	return;
	392
	393	// Update the configure popup
	394	DeviceOptions *const opts = new DeviceOptions(sr_dev, this);
	395	configure_button_action_->setVisible(
	396	!opts->binding().properties().empty());
	397	configure_button_.set_popup(opts);
	398
	399	// Update the channels popup
	400	Channels *const channels = new Channels(session_, this);
	401	channels_button_.set_popup(channels);
	402
	403	// Update supported options.
	404	sample_count_supported_ = false;
	405
	406	try {
	407	for (auto entry : sr_dev->config_keys(ConfigKey::DEVICE_OPTIONS))
	408	{
	409	auto key = entry.first;
	410	auto capabilities = entry.second;
	411	switch (key->id()) {
	412	case SR_CONF_LIMIT_SAMPLES:
	413	if (capabilities.count(Capability::SET))
	414	sample_count_supported_ = true;
	415	break;
	416	case SR_CONF_LIMIT_FRAMES:
	417	if (capabilities.count(Capability::SET))
	418	{
	419	sr_dev->config_set(ConfigKey::LIMIT_FRAMES,
	420	Glib::Variant<guint64>::create(1));
	421	on_config_changed();
	422	}
	423	break;
	424	default:
	425	break;
	426	}
	427	}
	428	} catch (Error error) {}
	429
	430	// Add notification of reconfigure events
	431	disconnect(this, SLOT(on_config_changed()));
	432	connect(&opts->binding(), SIGNAL(config_changed()),
	433	this, SLOT(on_config_changed()));
	434
	435	// Update sweep timing widgets.
	436	update_sample_count_selector();
	437	update_sample_rate_selector();
	438	}
	439
	440	void MainBar::commit_sample_count()
	441	{
	442	uint64_t sample_count = 0;
	443
	444	if (updating_sample_count_)
	445	return;
	446
	447	const shared_ptr<devices::Device> device =
	448	device_selector_.selected_device();
	449	if (!device)
	450	return;
	451
	452	const shared_ptr<sigrok::Device> sr_dev = device->device();
	453
	454	sample_count = sample_count_.value();
	455
	456	// Set the sample count
	457	assert(!updating_sample_count_);
	458	updating_sample_count_ = true;
	459	if (sample_count_supported_)
	460	{
	461	try {
	462	sr_dev->config_set(ConfigKey::LIMIT_SAMPLES,
	463	Glib::Variant<guint64>::create(sample_count));
	464	on_config_changed();
	465	} catch (Error error) {
	466	qDebug() << "Failed to configure sample count.";
	467	return;
	468	}
	469	}
	470	updating_sample_count_ = false;
	471	}
	472
	473	void MainBar::commit_sample_rate()
	474	{
	475	uint64_t sample_rate = 0;
	476
	477	if (updating_sample_rate_)
	478	return;
	479
	480	const shared_ptr<devices::Device> device =
	481	device_selector_.selected_device();
	482	if (!device)
	483	return;
	484
	485	const shared_ptr<sigrok::Device> sr_dev = device->device();
	486
	487	sample_rate = sample_rate_.value();
	488	if (sample_rate == 0)
	489	return;
	490
	491	// Set the samplerate
	492	assert(!updating_sample_rate_);
	493	updating_sample_rate_ = true;
	494	try {
	495	sr_dev->config_set(ConfigKey::SAMPLERATE,
	496	Glib::Variant<guint64>::create(sample_rate));
	497	on_config_changed();
	498	} catch (Error error) {
	499	qDebug() << "Failed to configure samplerate.";
	500	return;
	501	}
	502	updating_sample_rate_ = false;
	503	}
	504
	505	void MainBar::on_device_selected()
	506	{
	507	shared_ptr<devices::Device> device = device_selector_.selected_device();
	508	if (!device)
	509	return;
	510
	511	main_window_.select_device(device);
	512
	513	update_device_config_widgets();
	514	}
	515
	516	void MainBar::on_sample_count_changed()
	517	{
	518	commit_sample_count();
	519	}
	520
	521	void MainBar::on_sample_rate_changed()
	522	{
	523	commit_sample_rate();
	524	}
	525
	526	void MainBar::on_run_stop()
	527	{
	528	commit_sample_count();
	529	commit_sample_rate();
	530	main_window_.run_stop();
	531	}
	532
	533	void MainBar::on_config_changed()
	534	{
	535	commit_sample_count();
	536	update_sample_count_selector();
	537	commit_sample_rate();
	538	update_sample_rate_selector();
	539	}
	540
	541	bool MainBar::eventFilter(QObject watched, QEvent event)
	542	{
	543	if ((watched == &sample_count_ \|\| watched == &sample_rate_) &&
	544	(event->type() == QEvent::ToolTip)) {
	545	double sec = (double)sample_count_.value() / sample_rate_.value();
	546	QHelpEvent help_event = static_cast<QHelpEvent>(event);
	547
	548	QString str = tr("Total sampling time: %1").arg(pv::util::format_second(sec));
	549	QToolTip::showText(help_event->globalPos(), str);
	550
	551	return true;
	552	}
	553
	554	return false;
	555	}
	556
	557	} // namespace toolbars
	558	} // namespace pv