[pulseview.git] / pv / toolbars / samplingbar.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 <boost/foreach.hpp>

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

#include "samplingbar.h"

#include <pv/devicemanager.h>
#include <pv/device/devinst.h>
#include <pv/popups/deviceoptions.h>
#include <pv/popups/probes.h>
#include <pv/util.h>

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

namespace pv {
namespace toolbars {

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

SamplingBar::SamplingBar(SigSession &session, QWidget *parent) :
	QToolBar("Sampling Bar", parent),
	_session(session),
	_device_selector(this),
	_updating_device_selector(false),
	_configure_button(this),
	_configure_button_action(NULL),
	_probes_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)
{
	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::SigSession::Stopped);

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

	_probes_button.setIcon(QIcon::fromTheme("probes",
		QIcon(":/icons/probes.svg")));

	_run_stop_button.setToolButtonStyle(Qt::ToolButtonTextBesideIcon);

	addWidget(&_device_selector);
	_configure_button_action = addWidget(&_configure_button);
	addWidget(&_probes_button);
	addWidget(&_sample_count);
	addWidget(&_sample_rate);

	addWidget(&_run_stop_button);

	_sample_count.installEventFilter(this);
	_sample_rate.installEventFilter(this);
}

void SamplingBar::set_device_list(
	const std::list< shared_ptr<pv::device::DevInst> > &devices,
	shared_ptr<pv::device::DevInst> selected)
{
	int selected_index = -1;

	assert(selected);

	_updating_device_selector = true;

	_device_selector.clear();
	_device_selector_map.clear();

	BOOST_FOREACH (shared_ptr<pv::device::DevInst> dev_inst, devices) {
		assert(dev_inst);
		const string title = dev_inst->format_device_title();
		const sr_dev_inst *sdi = dev_inst->dev_inst();
		assert(sdi);

		if (selected == dev_inst)
			selected_index = _device_selector.count();

		_device_selector_map[sdi] = dev_inst;
		_device_selector.addItem(title.c_str(),
			qVariantFromValue((void*)sdi));
	}

	// 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<pv::device::DevInst> SamplingBar::get_selected_device() const
{
	const int index = _device_selector.currentIndex();
	if (index < 0)
		return shared_ptr<pv::device::DevInst>();

	const sr_dev_inst *const sdi =
		(const sr_dev_inst*)_device_selector.itemData(
			index).value<void*>();
	assert(sdi);

	map<const sr_dev_inst*, boost::weak_ptr<device::DevInst> >::
		const_iterator iter = _device_selector_map.find(sdi);
	if (iter == _device_selector_map.end())
		return shared_ptr<pv::device::DevInst>();

	return shared_ptr<pv::device::DevInst>((*iter).second);
}

void SamplingBar::set_capture_state(pv::SigSession::capture_state state)
{
	const QIcon *icons[] = {&_icon_grey, &_icon_red, &_icon_green};
	_run_stop_button.setIcon(*icons[state]);
	_run_stop_button.setText((state == pv::SigSession::Stopped) ?
		tr("Run") : tr("Stop"));
}

void SamplingBar::update_sample_rate_selector()
{
	GVariant *gvar_dict, *gvar_list;
	const uint64_t *elements = NULL;
	gsize num_elements;

	if (_updating_sample_rate)
		return;

	const shared_ptr<device::DevInst> dev_inst = get_selected_device();
	if (!dev_inst)
		return;

	assert(!_updating_sample_rate);
	_updating_sample_rate = true;

	if (!(gvar_dict = dev_inst->list_config(NULL, SR_CONF_SAMPLERATE)))
	{
		_sample_rate.show_none();
		_updating_sample_rate = false;
		return;
	}

	if ((gvar_list = g_variant_lookup_value(gvar_dict,
			"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,
			"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;

	g_variant_unref(gvar_dict);
	update_sample_rate_selector_value();
}

void SamplingBar::update_sample_rate_selector_value()
{
	GVariant *gvar;
	uint64_t samplerate;

	if (_updating_sample_rate)
		return;

	const shared_ptr<device::DevInst> dev_inst = get_selected_device();
	if (!dev_inst)
		return;

	if (!(gvar = dev_inst->get_config(NULL, SR_CONF_SAMPLERATE))) {
		qDebug() << "WARNING: Failed to get value of sample rate";
		return;
	}
	samplerate = g_variant_get_uint64(gvar);
	g_variant_unref(gvar);

	assert(!_updating_sample_rate);
	_updating_sample_rate = true;
	_sample_rate.set_value(samplerate);
	_updating_sample_rate = false;
}

void SamplingBar::update_sample_count_selector()
{
	GVariant *gvar;

	if (_updating_sample_count)
		return;

	const shared_ptr<device::DevInst> dev_inst = get_selected_device();
	if (!dev_inst)
		return;

	assert(!_updating_sample_count);
	_updating_sample_count = true;

	if (_sample_count_supported)
	{
		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;

		if ((gvar = dev_inst->list_config(NULL, SR_CONF_LIMIT_SAMPLES)))
		{
			g_variant_get(gvar, "(tt)",
				&min_sample_count, &max_sample_count);
			g_variant_unref(gvar);
		}

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

		_sample_count.show_125_list(
			min_sample_count, max_sample_count);

		if ((gvar = dev_inst->get_config(NULL, SR_CONF_LIMIT_SAMPLES)))
		{
			sample_count = g_variant_get_uint64(gvar);
			if (sample_count == 0)
				sample_count = DefaultSampleCount;
			sample_count = min(max(sample_count, MinSampleCount),
				max_sample_count);

			g_variant_unref(gvar);
		}

		_sample_count.set_value(sample_count);
	}
	else
		_sample_count.show_none();

	_updating_sample_count = false;
}

void SamplingBar::update_device_config_widgets()
{
	GVariant *gvar;

	using namespace pv::popups;

	const shared_ptr<device::DevInst> dev_inst = get_selected_device();
	if (!dev_inst)
		return;

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

	// Update the probes popup
	Probes *const probes = new Probes(_session, this);
	_probes_button.set_popup(probes);

	// Update supported options.
	_sample_count_supported = false;

	if ((gvar = dev_inst->list_config(NULL, SR_CONF_DEVICE_OPTIONS)))
	{
		gsize num_opts;
		const int *const options =
			(const int32_t *)g_variant_get_fixed_array(
			        gvar, &num_opts, sizeof(int32_t));
		for (unsigned int i = 0; i < num_opts; i++)
		{
			switch (options[i]) {
			case SR_CONF_LIMIT_SAMPLES:
				_sample_count_supported = true;
				break;
			case SR_CONF_LIMIT_FRAMES:
				dev_inst->set_config(NULL, SR_CONF_LIMIT_FRAMES,
					g_variant_new_uint64(1));
				break;
			}
		}
	}

	// Add notification of reconfigure events
	disconnect(this, SLOT(on_config_changed()));
	connect(dev_inst.get(), SIGNAL(config_changed()),
		this, SLOT(on_config_changed()));

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

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

	if (_updating_sample_count)
		return;

	const shared_ptr<device::DevInst> dev_inst = get_selected_device();
	if (!dev_inst)
		return;

	sample_count = _sample_count.value();

	// Set the sample count
	assert(!_updating_sample_count);
	_updating_sample_count = true;
	if (_sample_count_supported &&
		!dev_inst->set_config(NULL, SR_CONF_LIMIT_SAMPLES,
		g_variant_new_uint64(sample_count))) {
		qDebug() << "Failed to configure sample count.";
		return;
	}
	_updating_sample_count = false;
}

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

	if (_updating_sample_rate)
		return;

	const shared_ptr<device::DevInst> dev_inst = get_selected_device();
	if (!dev_inst)
		return;

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

	// Set the samplerate
	assert(!_updating_sample_rate);
	_updating_sample_rate = true;
	if (!dev_inst->set_config(NULL, SR_CONF_SAMPLERATE,
		g_variant_new_uint64(sample_rate))) {
		qDebug() << "Failed to configure samplerate.";
		return;
	}
	_updating_sample_rate = false;
}

void SamplingBar::on_device_selected()
{
	if (_updating_device_selector)
		return;

	const shared_ptr<device::DevInst> dev_inst = get_selected_device();
	if (!dev_inst)
		return;

	_session.set_device(dev_inst);

	update_device_config_widgets();
}

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

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

void SamplingBar::on_run_stop()
{
	commit_sample_count();
	commit_sample_rate();	
	run_stop();
}

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

bool SamplingBar::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 <boost/foreach.hpp>
	26
	27	#include <QAction>
	28	#include <QDebug>
	29	#include <QHelpEvent>
	30	#include <QToolTip>
	31
	32	#include "samplingbar.h"
	33
	34	#include <pv/devicemanager.h>
	35	#include <pv/device/devinst.h>
	36	#include <pv/popups/deviceoptions.h>
	37	#include <pv/popups/probes.h>
	38	#include <pv/util.h>
	39
	40	using boost::shared_ptr;
	41	using std::map;
	42	using std::max;
	43	using std::min;
	44	using std::string;
	45
	46	namespace pv {
	47	namespace toolbars {
	48
	49	const uint64_t SamplingBar::MinSampleCount = 100ULL;
	50	const uint64_t SamplingBar::MaxSampleCount = 1000000000000ULL;
	51	const uint64_t SamplingBar::DefaultSampleCount = 1000000;
	52
	53	SamplingBar::SamplingBar(SigSession &session, QWidget *parent) :
	54	QToolBar("Sampling Bar", parent),
	55	_session(session),
	56	_device_selector(this),
	57	_updating_device_selector(false),
	58	_configure_button(this),
	59	_configure_button_action(NULL),
	60	_probes_button(this),
	61	_sample_count(" samples", this),
	62	_sample_rate("Hz", this),
	63	_updating_sample_rate(false),
	64	_updating_sample_count(false),
	65	_sample_count_supported(false),
	66	_icon_red(":/icons/status-red.svg"),
	67	_icon_green(":/icons/status-green.svg"),
	68	_icon_grey(":/icons/status-grey.svg"),
	69	_run_stop_button(this)
	70	{
	71	connect(&_run_stop_button, SIGNAL(clicked()),
	72	this, SLOT(on_run_stop()));
	73	connect(&_device_selector, SIGNAL(currentIndexChanged (int)),
	74	this, SLOT(on_device_selected()));
	75	connect(&_sample_count, SIGNAL(value_changed()),
	76	this, SLOT(on_sample_count_changed()));
	77	connect(&_sample_rate, SIGNAL(value_changed()),
	78	this, SLOT(on_sample_rate_changed()));
	79
	80	_sample_count.show_min_max_step(0, UINT64_MAX, 1);
	81
	82	set_capture_state(pv::SigSession::Stopped);
	83
	84	_configure_button.setIcon(QIcon::fromTheme("configure",
	85	QIcon(":/icons/configure.png")));
	86
	87	_probes_button.setIcon(QIcon::fromTheme("probes",
	88	QIcon(":/icons/probes.svg")));
	89
	90	_run_stop_button.setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
	91
	92	addWidget(&_device_selector);
	93	_configure_button_action = addWidget(&_configure_button);
	94	addWidget(&_probes_button);
	95	addWidget(&_sample_count);
	96	addWidget(&_sample_rate);
	97
	98	addWidget(&_run_stop_button);
	99
	100	_sample_count.installEventFilter(this);
	101	_sample_rate.installEventFilter(this);
	102	}
	103
	104	void SamplingBar::set_device_list(
	105	const std::list< shared_ptr<pv::device::DevInst> > &devices,
	106	shared_ptr<pv::device::DevInst> selected)
	107	{
	108	int selected_index = -1;
	109
	110	assert(selected);
	111
	112	_updating_device_selector = true;
	113
	114	_device_selector.clear();
	115	_device_selector_map.clear();
	116
	117	BOOST_FOREACH (shared_ptr<pv::device::DevInst> dev_inst, devices) {
	118	assert(dev_inst);
	119	const string title = dev_inst->format_device_title();
	120	const sr_dev_inst *sdi = dev_inst->dev_inst();
	121	assert(sdi);
	122
	123	if (selected == dev_inst)
	124	selected_index = _device_selector.count();
	125
	126	_device_selector_map[sdi] = dev_inst;
	127	_device_selector.addItem(title.c_str(),
	128	qVariantFromValue((void*)sdi));
	129	}
	130
	131	// The selected device should have been in the list
	132	assert(selected_index != -1);
	133	_device_selector.setCurrentIndex(selected_index);
	134
	135	update_device_config_widgets();
	136
	137	_updating_device_selector = false;
	138	}
	139
	140	shared_ptr<pv::device::DevInst> SamplingBar::get_selected_device() const
	141	{
	142	const int index = _device_selector.currentIndex();
	143	if (index < 0)
	144	return shared_ptr<pv::device::DevInst>();
	145
	146	const sr_dev_inst *const sdi =
	147	(const sr_dev_inst*)_device_selector.itemData(
	148	index).value<void*>();
	149	assert(sdi);
	150
	151	map<const sr_dev_inst*, boost::weak_ptr<device::DevInst> >::
	152	const_iterator iter = _device_selector_map.find(sdi);
	153	if (iter == _device_selector_map.end())
	154	return shared_ptr<pv::device::DevInst>();
	155
	156	return shared_ptr<pv::device::DevInst>((*iter).second);
	157	}
	158
	159	void SamplingBar::set_capture_state(pv::SigSession::capture_state state)
	160	{
	161	const QIcon *icons[] = {&_icon_grey, &_icon_red, &_icon_green};
	162	_run_stop_button.setIcon(*icons[state]);
	163	_run_stop_button.setText((state == pv::SigSession::Stopped) ?
	164	tr("Run") : tr("Stop"));
	165	}
	166
	167	void SamplingBar::update_sample_rate_selector()
	168	{
	169	GVariant gvar_dict, gvar_list;
	170	const uint64_t *elements = NULL;
	171	gsize num_elements;
	172
	173	if (_updating_sample_rate)
	174	return;
	175
	176	const shared_ptr<device::DevInst> dev_inst = get_selected_device();
	177	if (!dev_inst)
	178	return;
	179
	180	assert(!_updating_sample_rate);
	181	_updating_sample_rate = true;
	182
	183	if (!(gvar_dict = dev_inst->list_config(NULL, SR_CONF_SAMPLERATE)))
	184	{
	185	_sample_rate.show_none();
	186	_updating_sample_rate = false;
	187	return;
	188	}
	189
	190	if ((gvar_list = g_variant_lookup_value(gvar_dict,
	191	"samplerate-steps", G_VARIANT_TYPE("at"))))
	192	{
	193	elements = (const uint64_t *)g_variant_get_fixed_array(
	194	gvar_list, &num_elements, sizeof(uint64_t));
	195
	196	const uint64_t min = elements[0];
	197	const uint64_t max = elements[1];
	198	const uint64_t step = elements[2];
	199
	200	g_variant_unref(gvar_list);
	201
	202	assert(min > 0);
	203	assert(max > 0);
	204	assert(max > min);
	205	assert(step > 0);
	206
	207	if (step == 1)
	208	_sample_rate.show_125_list(min, max);
	209	else
	210	{
	211	// When the step is not 1, we cam't make a 1-2-5-10
	212	// list of sample rates, because we may not be able to
	213	// make round numbers. Therefore in this case, show a
	214	// spin box.
	215	_sample_rate.show_min_max_step(min, max, step);
	216	}
	217	}
	218	else if ((gvar_list = g_variant_lookup_value(gvar_dict,
	219	"samplerates", G_VARIANT_TYPE("at"))))
	220	{
	221	elements = (const uint64_t *)g_variant_get_fixed_array(
	222	gvar_list, &num_elements, sizeof(uint64_t));
	223	_sample_rate.show_list(elements, num_elements);
	224	g_variant_unref(gvar_list);
	225	}
	226	_updating_sample_rate = false;
	227
	228	g_variant_unref(gvar_dict);
	229	update_sample_rate_selector_value();
	230	}
	231
	232	void SamplingBar::update_sample_rate_selector_value()
	233	{
	234	GVariant *gvar;
	235	uint64_t samplerate;
	236
	237	if (_updating_sample_rate)
	238	return;
	239
	240	const shared_ptr<device::DevInst> dev_inst = get_selected_device();
	241	if (!dev_inst)
	242	return;
	243
	244	if (!(gvar = dev_inst->get_config(NULL, SR_CONF_SAMPLERATE))) {
	245	qDebug() << "WARNING: Failed to get value of sample rate";
	246	return;
	247	}
	248	samplerate = g_variant_get_uint64(gvar);
	249	g_variant_unref(gvar);
	250
	251	assert(!_updating_sample_rate);
	252	_updating_sample_rate = true;
	253	_sample_rate.set_value(samplerate);
	254	_updating_sample_rate = false;
	255	}
	256
	257	void SamplingBar::update_sample_count_selector()
	258	{
	259	GVariant *gvar;
	260
	261	if (_updating_sample_count)
	262	return;
	263
	264	const shared_ptr<device::DevInst> dev_inst = get_selected_device();
	265	if (!dev_inst)
	266	return;
	267
	268	assert(!_updating_sample_count);
	269	_updating_sample_count = true;
	270
	271	if (_sample_count_supported)
	272	{
	273	uint64_t sample_count = _sample_count.value();
	274	uint64_t min_sample_count = 0;
	275	uint64_t max_sample_count = MaxSampleCount;
	276
	277	if (sample_count == 0)
	278	sample_count = DefaultSampleCount;
	279
	280	if ((gvar = dev_inst->list_config(NULL, SR_CONF_LIMIT_SAMPLES)))
	281	{
	282	g_variant_get(gvar, "(tt)",
	283	&min_sample_count, &max_sample_count);
	284	g_variant_unref(gvar);
	285	}
	286
	287	min_sample_count = min(max(min_sample_count, MinSampleCount),
	288	max_sample_count);
	289
	290	_sample_count.show_125_list(
	291	min_sample_count, max_sample_count);
	292
	293	if ((gvar = dev_inst->get_config(NULL, SR_CONF_LIMIT_SAMPLES)))
	294	{
	295	sample_count = g_variant_get_uint64(gvar);
	296	if (sample_count == 0)
	297	sample_count = DefaultSampleCount;
	298	sample_count = min(max(sample_count, MinSampleCount),
	299	max_sample_count);
	300
	301	g_variant_unref(gvar);
	302	}
	303
	304	_sample_count.set_value(sample_count);
	305	}
	306	else
	307	_sample_count.show_none();
	308
	309	_updating_sample_count = false;
	310	}
	311
	312	void SamplingBar::update_device_config_widgets()
	313	{
	314	GVariant *gvar;
	315
	316	using namespace pv::popups;
	317
	318	const shared_ptr<device::DevInst> dev_inst = get_selected_device();
	319	if (!dev_inst)
	320	return;
	321
	322	// Update the configure popup
	323	DeviceOptions *const opts = new DeviceOptions(dev_inst, this);
	324	_configure_button_action->setVisible(
	325	!opts->binding().properties().empty());
	326	_configure_button.set_popup(opts);
	327
	328	// Update the probes popup
	329	Probes *const probes = new Probes(_session, this);
	330	_probes_button.set_popup(probes);
	331
	332	// Update supported options.
	333	_sample_count_supported = false;
	334
	335	if ((gvar = dev_inst->list_config(NULL, SR_CONF_DEVICE_OPTIONS)))
	336	{
	337	gsize num_opts;
	338	const int *const options =
	339	(const int32_t *)g_variant_get_fixed_array(
	340	gvar, &num_opts, sizeof(int32_t));
	341	for (unsigned int i = 0; i < num_opts; i++)
	342	{
	343	switch (options[i]) {
	344	case SR_CONF_LIMIT_SAMPLES:
	345	_sample_count_supported = true;
	346	break;
	347	case SR_CONF_LIMIT_FRAMES:
	348	dev_inst->set_config(NULL, SR_CONF_LIMIT_FRAMES,
	349	g_variant_new_uint64(1));
	350	break;
	351	}
	352	}
	353	}
	354
	355	// Add notification of reconfigure events
	356	disconnect(this, SLOT(on_config_changed()));
	357	connect(dev_inst.get(), SIGNAL(config_changed()),
	358	this, SLOT(on_config_changed()));
	359
	360	// Update sweep timing widgets.
	361	update_sample_count_selector();
	362	update_sample_rate_selector();
	363	}
	364
	365	void SamplingBar::commit_sample_count()
	366	{
	367	uint64_t sample_count = 0;
	368
	369	if (_updating_sample_count)
	370	return;
	371
	372	const shared_ptr<device::DevInst> dev_inst = get_selected_device();
	373	if (!dev_inst)
	374	return;
	375
	376	sample_count = _sample_count.value();
	377
	378	// Set the sample count
	379	assert(!_updating_sample_count);
	380	_updating_sample_count = true;
	381	if (_sample_count_supported &&
	382	!dev_inst->set_config(NULL, SR_CONF_LIMIT_SAMPLES,
	383	g_variant_new_uint64(sample_count))) {
	384	qDebug() << "Failed to configure sample count.";
	385	return;
	386	}
	387	_updating_sample_count = false;
	388	}
	389
	390	void SamplingBar::commit_sample_rate()
	391	{
	392	uint64_t sample_rate = 0;
	393
	394	if (_updating_sample_rate)
	395	return;
	396
	397	const shared_ptr<device::DevInst> dev_inst = get_selected_device();
	398	if (!dev_inst)
	399	return;
	400
	401	sample_rate = _sample_rate.value();
	402	if (sample_rate == 0)
	403	return;
	404
	405	// Set the samplerate
	406	assert(!_updating_sample_rate);
	407	_updating_sample_rate = true;
	408	if (!dev_inst->set_config(NULL, SR_CONF_SAMPLERATE,
	409	g_variant_new_uint64(sample_rate))) {
	410	qDebug() << "Failed to configure samplerate.";
	411	return;
	412	}
	413	_updating_sample_rate = false;
	414	}
	415
	416	void SamplingBar::on_device_selected()
	417	{
	418	if (_updating_device_selector)
	419	return;
	420
	421	const shared_ptr<device::DevInst> dev_inst = get_selected_device();
	422	if (!dev_inst)
	423	return;
	424
	425	_session.set_device(dev_inst);
	426
	427	update_device_config_widgets();
	428	}
	429
	430	void SamplingBar::on_sample_count_changed()
	431	{
	432	commit_sample_count();
	433	}
	434
	435	void SamplingBar::on_sample_rate_changed()
	436	{
	437	commit_sample_rate();
	438	}
	439
	440	void SamplingBar::on_run_stop()
	441	{
	442	commit_sample_count();
	443	commit_sample_rate();
	444	run_stop();
	445	}
	446
	447	void SamplingBar::on_config_changed()
	448	{
	449	commit_sample_count();
	450	update_sample_count_selector();
	451	commit_sample_rate();
	452	update_sample_rate_selector();
	453	}
	454
	455	bool SamplingBar::eventFilter(QObject watched, QEvent event)
	456	{
	457	if ((watched == &_sample_count \|\| watched == &_sample_rate) &&
	458	(event->type() == QEvent::ToolTip)) {
	459	double sec = (double)_sample_count.value() / _sample_rate.value();
	460	QHelpEvent help_event = static_cast<QHelpEvent>(event);
	461
	462	QString str = tr("Total sampling time: %1").arg(pv::util::format_second(sec));
	463	QToolTip::showText(help_event->globalPos(), str);
	464
	465	return true;
	466	}
	467
	468	return false;
	469	}
	470
	471	} // namespace toolbars
	472	} // namespace pv