[pulseview.git] / pv / mainwindow.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 <libsigrokdecode/libsigrokdecode.h>

#include <boost/bind.hpp>
#include <boost/foreach.hpp>

#include <QAction>
#include <QApplication>
#include <QButtonGroup>
#include <QFileDialog>
#include <QMessageBox>
#include <QMenu>
#include <QMenuBar>
#include <QStatusBar>
#include <QVBoxLayout>
#include <QWidget>

#include "mainwindow.h"

#include "devicemanager.h"
#include "dialogs/about.h"
#include "dialogs/connect.h"
#include "toolbars/contextbar.h"
#include "toolbars/samplingbar.h"
#include "view/view.h"

/* __STDC_FORMAT_MACROS is required for PRIu64 and friends (in C++). */
#define __STDC_FORMAT_MACROS
#include <inttypes.h>
#include <stdint.h>
#include <stdarg.h>
#include <glib.h>
#include <libsigrok/libsigrok.h>

using namespace boost;
using namespace std;

namespace pv {

namespace view {
class SelectableItem;
}

MainWindow::MainWindow(DeviceManager &device_manager,
	const char *open_file_name,
	QWidget *parent) :
	QMainWindow(parent),
	_device_manager(device_manager),
	_session(device_manager)
{
	setup_ui();
	if (open_file_name) {
		const QString s(QString::fromUtf8(open_file_name));
		QMetaObject::invokeMethod(this, "load_file",
			Qt::QueuedConnection,
			Q_ARG(QString, s));
	}
}

void MainWindow::setup_ui()
{
	setObjectName(QString::fromUtf8("MainWindow"));

	resize(1024, 768);

	// Set the window icon
	QIcon icon;
	icon.addFile(QString::fromUtf8(":/icons/sigrok-logo-notext.png"),
		QSize(), QIcon::Normal, QIcon::Off);
	setWindowIcon(icon);

	// Setup the central widget
	_central_widget = new QWidget(this);
	_vertical_layout = new QVBoxLayout(_central_widget);
	_vertical_layout->setSpacing(6);
	_vertical_layout->setContentsMargins(0, 0, 0, 0);
	setCentralWidget(_central_widget);

	_view = new pv::view::View(_session, this);
	connect(_view, SIGNAL(selection_changed()), this,
		SLOT(view_selection_changed()));

	_vertical_layout->addWidget(_view);

	// Setup the menu bar
	_menu_bar = new QMenuBar(this);
	_menu_bar->setGeometry(QRect(0, 0, 400, 25));

	// File Menu
	_menu_file = new QMenu(_menu_bar);
	_menu_file->setTitle(QApplication::translate(
		"MainWindow", "&File", 0, QApplication::UnicodeUTF8));

	_action_open = new QAction(this);
	_action_open->setText(QApplication::translate(
		"MainWindow", "&Open...", 0, QApplication::UnicodeUTF8));
	_action_open->setIcon(QIcon::fromTheme("document-open",
		QIcon(":/icons/document-open.png")));
	_action_open->setObjectName(QString::fromUtf8("actionOpen"));
	_menu_file->addAction(_action_open);

	_menu_file->addSeparator();

	_action_connect = new QAction(this);
	_action_connect->setText(QApplication::translate(
		"MainWindow", "&Connect to Device...", 0,
		QApplication::UnicodeUTF8));
	_action_connect->setObjectName(QString::fromUtf8("actionConnect"));
	_menu_file->addAction(_action_connect);

	_menu_file->addSeparator();

	_action_quit = new QAction(this);
	_action_quit->setText(QApplication::translate(
		"MainWindow", "&Quit", 0, QApplication::UnicodeUTF8));
	_action_quit->setIcon(QIcon::fromTheme("application-exit",
		QIcon(":/icons/application-exit.png")));
	_action_quit->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_Q));
	_action_quit->setObjectName(QString::fromUtf8("actionQuit"));
	_menu_file->addAction(_action_quit);

	// View Menu
	_menu_view = new QMenu(_menu_bar);
	_menu_view->setTitle(QApplication::translate(
		"MainWindow", "&View", 0, QApplication::UnicodeUTF8));

	_action_view_zoom_in = new QAction(this);
	_action_view_zoom_in->setText(QApplication::translate(
		"MainWindow", "Zoom &In", 0, QApplication::UnicodeUTF8));
	_action_view_zoom_in->setIcon(QIcon::fromTheme("zoom-in",
		QIcon(":/icons/zoom-in.png")));
	_action_view_zoom_in->setObjectName(
		QString::fromUtf8("actionViewZoomIn"));
	_menu_view->addAction(_action_view_zoom_in);

	_action_view_zoom_out = new QAction(this);
	_action_view_zoom_out->setText(QApplication::translate(
		"MainWindow", "Zoom &Out", 0, QApplication::UnicodeUTF8));
	_action_view_zoom_out->setIcon(QIcon::fromTheme("zoom-out",
		QIcon(":/icons/zoom-out.png")));
	_action_view_zoom_out->setObjectName(
		QString::fromUtf8("actionViewZoomOut"));
	_menu_view->addAction(_action_view_zoom_out);

	_menu_view->addSeparator();

	_action_view_show_cursors = new QAction(this);
	_action_view_show_cursors->setCheckable(true);
	_action_view_show_cursors->setChecked(_view->cursors_shown());
	_action_view_show_cursors->setShortcut(QKeySequence(Qt::Key_C));
	_action_view_show_cursors->setObjectName(
		QString::fromUtf8("actionViewShowCursors"));
	_action_view_show_cursors->setText(QApplication::translate(
		"MainWindow", "Show &Cursors", 0, QApplication::UnicodeUTF8));
	_menu_view->addAction(_action_view_show_cursors);

	// Help Menu
	_menu_help = new QMenu(_menu_bar);
	_menu_help->setTitle(QApplication::translate(
		"MainWindow", "&Help", 0, QApplication::UnicodeUTF8));

	_action_about = new QAction(this);
	_action_about->setObjectName(QString::fromUtf8("actionAbout"));
	_action_about->setText(QApplication::translate(
		"MainWindow", "&About...", 0, QApplication::UnicodeUTF8));
	_menu_help->addAction(_action_about);

	_menu_bar->addAction(_menu_file->menuAction());
	_menu_bar->addAction(_menu_view->menuAction());
	_menu_bar->addAction(_menu_help->menuAction());

	setMenuBar(_menu_bar);
	QMetaObject::connectSlotsByName(this);

	// Setup the toolbar
	_toolbar = new QToolBar(tr("Main Toolbar"), this);
	_toolbar->addAction(_action_open);
	_toolbar->addSeparator();
	_toolbar->addAction(_action_view_zoom_in);
	_toolbar->addAction(_action_view_zoom_out);
	addToolBar(_toolbar);

	// Setup the sampling bar
	_sampling_bar = new toolbars::SamplingBar(this);

	// Populate the device list and select the initially selected device
	update_device_list();

	connect(_sampling_bar, SIGNAL(device_selected()), this,
		SLOT(device_selected()));
	connect(_sampling_bar, SIGNAL(run_stop()), this,
		SLOT(run_stop()));
	addToolBar(_sampling_bar);

	// Setup the context bar
	_context_bar = new toolbars::ContextBar(this);
	addToolBar(_context_bar);

	// Set the title
	setWindowTitle(QApplication::translate("MainWindow", "PulseView", 0,
		QApplication::UnicodeUTF8));

	// Setup _session events
	connect(&_session, SIGNAL(capture_state_changed(int)), this,
		SLOT(capture_state_changed(int)));

}

void MainWindow::session_error(
	const QString text, const QString info_text)
{
	QMetaObject::invokeMethod(this, "show_session_error",
		Qt::QueuedConnection, Q_ARG(QString, text),
		Q_ARG(QString, info_text));
}

void MainWindow::update_device_list(struct sr_dev_inst *selected_device)
{
	assert(_sampling_bar);

	const list<sr_dev_inst*> &devices = _device_manager.devices();
	_sampling_bar->set_device_list(devices);

	if (!selected_device && !devices.empty()) {
		// Fall back to the first device in the list.
		selected_device = devices.front();

		// Try and find the demo device and select that by default
		BOOST_FOREACH (struct sr_dev_inst *sdi, devices)
			if (strcmp(sdi->driver->name, "demo") == 0) {
				selected_device = sdi;
			}
	}

	if (selected_device) {
		_sampling_bar->set_selected_device(selected_device);
		_session.set_device(selected_device);
	}
}

void MainWindow::load_file(QString file_name)
{
	const QString errorMessage(
		QString("Failed to load file %1").arg(file_name));
	const QString infoMessage;
	_session.load_file(file_name.toStdString(),
		boost::bind(&MainWindow::session_error, this,
			errorMessage, infoMessage));
}

void MainWindow::show_session_error(
	const QString text, const QString info_text)
{
	QMessageBox msg(this);
	msg.setText(text);
	msg.setInformativeText(info_text);
	msg.setStandardButtons(QMessageBox::Ok);
	msg.setIcon(QMessageBox::Warning);
	msg.exec();
}

void MainWindow::on_actionOpen_triggered()
{
	// Enumerate the file formats
	QString filters(tr("Sigrok Sessions (*.sr)"));
	filters.append(tr(";;All Files (*.*)"));

	// Show the dialog
	const QString file_name = QFileDialog::getOpenFileName(
		this, tr("Open File"), "", filters);
	if (!file_name.isEmpty())
		load_file(file_name);
}

void MainWindow::on_actionConnect_triggered()
{
	// Stop any currently running capture session
	_session.stop_capture();

	dialogs::Connect dlg(this, _device_manager);

	// If the user selected a device, select it in the device list. Select the
	// current device otherwise.
	struct sr_dev_inst *const sdi = dlg.exec() ?
		dlg.get_selected_device() : _session.get_device();

	update_device_list(sdi);
}

void MainWindow::on_actionQuit_triggered()
{
	close();
}

void MainWindow::on_actionViewZoomIn_triggered()
{
	_view->zoom(1);
}

void MainWindow::on_actionViewZoomOut_triggered()
{
	_view->zoom(-1);
}

void MainWindow::on_actionViewShowCursors_triggered()
{
	assert(_view);

	const bool show = !_view->cursors_shown();
	if(show)
		_view->centre_cursors();

	_view->show_cursors(show);
}

void MainWindow::on_actionAbout_triggered()
{
	dialogs::About dlg(this);
	dlg.exec();
}

void MainWindow::device_selected()
{
	_session.set_device(_sampling_bar->get_selected_device());
}

void MainWindow::run_stop()
{
	switch(_session.get_capture_state()) {
	case SigSession::Stopped:
		_session.start_capture(_sampling_bar->get_record_length(),
			boost::bind(&MainWindow::session_error, this,
				QString("Capture failed"), _1));
		break;

	case SigSession::AwaitingTrigger:
	case SigSession::Running:
		_session.stop_capture();
		break;
	}
}

void MainWindow::capture_state_changed(int state)
{
	_sampling_bar->set_capture_state((pv::SigSession::capture_state)state);
}

void MainWindow::view_selection_changed()
{
	assert(_context_bar);

	const list<weak_ptr<pv::view::SelectableItem> > items(
		_view->selected_items());
	_context_bar->set_selected_items(items);
}

} // 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 <libsigrokdecode/libsigrokdecode.h>
	22
	23	#include <boost/bind.hpp>
	24	#include <boost/foreach.hpp>
	25
	26	#include <QAction>
	27	#include <QApplication>
	28	#include <QButtonGroup>
	29	#include <QFileDialog>
	30	#include <QMessageBox>
	31	#include <QMenu>
	32	#include <QMenuBar>
	33	#include <QStatusBar>
	34	#include <QVBoxLayout>
	35	#include <QWidget>
	36
	37	#include "mainwindow.h"
	38
	39	#include "devicemanager.h"
	40	#include "dialogs/about.h"
	41	#include "dialogs/connect.h"
	42	#include "toolbars/contextbar.h"
	43	#include "toolbars/samplingbar.h"
	44	#include "view/view.h"
	45
	46	/* __STDC_FORMAT_MACROS is required for PRIu64 and friends (in C++). */
	47	#define __STDC_FORMAT_MACROS
	48	#include <inttypes.h>
	49	#include <stdint.h>
	50	#include <stdarg.h>
	51	#include <glib.h>
	52	#include <libsigrok/libsigrok.h>
	53
	54	using namespace boost;
	55	using namespace std;
	56
	57	namespace pv {
	58
	59	namespace view {
	60	class SelectableItem;
	61	}
	62
	63	MainWindow::MainWindow(DeviceManager &device_manager,
	64	const char *open_file_name,
	65	QWidget *parent) :
	66	QMainWindow(parent),
	67	_device_manager(device_manager),
	68	_session(device_manager)
	69	{
	70	setup_ui();
	71	if (open_file_name) {
	72	const QString s(QString::fromUtf8(open_file_name));
	73	QMetaObject::invokeMethod(this, "load_file",
	74	Qt::QueuedConnection,
	75	Q_ARG(QString, s));
	76	}
	77	}
	78
	79	void MainWindow::setup_ui()
	80	{
	81	setObjectName(QString::fromUtf8("MainWindow"));
	82
	83	resize(1024, 768);
	84
	85	// Set the window icon
	86	QIcon icon;
	87	icon.addFile(QString::fromUtf8(":/icons/sigrok-logo-notext.png"),
	88	QSize(), QIcon::Normal, QIcon::Off);
	89	setWindowIcon(icon);
	90
	91	// Setup the central widget
	92	_central_widget = new QWidget(this);
	93	_vertical_layout = new QVBoxLayout(_central_widget);
	94	_vertical_layout->setSpacing(6);
	95	_vertical_layout->setContentsMargins(0, 0, 0, 0);
	96	setCentralWidget(_central_widget);
	97
	98	_view = new pv::view::View(_session, this);
	99	connect(_view, SIGNAL(selection_changed()), this,
	100	SLOT(view_selection_changed()));
	101
	102	_vertical_layout->addWidget(_view);
	103
	104	// Setup the menu bar
	105	_menu_bar = new QMenuBar(this);
	106	_menu_bar->setGeometry(QRect(0, 0, 400, 25));
	107
	108	// File Menu
	109	_menu_file = new QMenu(_menu_bar);
	110	_menu_file->setTitle(QApplication::translate(
	111	"MainWindow", "&File", 0, QApplication::UnicodeUTF8));
	112
	113	_action_open = new QAction(this);
	114	_action_open->setText(QApplication::translate(
	115	"MainWindow", "&Open...", 0, QApplication::UnicodeUTF8));
	116	_action_open->setIcon(QIcon::fromTheme("document-open",
	117	QIcon(":/icons/document-open.png")));
	118	_action_open->setObjectName(QString::fromUtf8("actionOpen"));
	119	_menu_file->addAction(_action_open);
	120
	121	_menu_file->addSeparator();
	122
	123	_action_connect = new QAction(this);
	124	_action_connect->setText(QApplication::translate(
	125	"MainWindow", "&Connect to Device...", 0,
	126	QApplication::UnicodeUTF8));
	127	_action_connect->setObjectName(QString::fromUtf8("actionConnect"));
	128	_menu_file->addAction(_action_connect);
	129
	130	_menu_file->addSeparator();
	131
	132	_action_quit = new QAction(this);
	133	_action_quit->setText(QApplication::translate(
	134	"MainWindow", "&Quit", 0, QApplication::UnicodeUTF8));
	135	_action_quit->setIcon(QIcon::fromTheme("application-exit",
	136	QIcon(":/icons/application-exit.png")));
	137	_action_quit->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_Q));
	138	_action_quit->setObjectName(QString::fromUtf8("actionQuit"));
	139	_menu_file->addAction(_action_quit);
	140
	141	// View Menu
	142	_menu_view = new QMenu(_menu_bar);
	143	_menu_view->setTitle(QApplication::translate(
	144	"MainWindow", "&View", 0, QApplication::UnicodeUTF8));
	145
	146	_action_view_zoom_in = new QAction(this);
	147	_action_view_zoom_in->setText(QApplication::translate(
	148	"MainWindow", "Zoom &In", 0, QApplication::UnicodeUTF8));
	149	_action_view_zoom_in->setIcon(QIcon::fromTheme("zoom-in",
	150	QIcon(":/icons/zoom-in.png")));
	151	_action_view_zoom_in->setObjectName(
	152	QString::fromUtf8("actionViewZoomIn"));
	153	_menu_view->addAction(_action_view_zoom_in);
	154
	155	_action_view_zoom_out = new QAction(this);
	156	_action_view_zoom_out->setText(QApplication::translate(
	157	"MainWindow", "Zoom &Out", 0, QApplication::UnicodeUTF8));
	158	_action_view_zoom_out->setIcon(QIcon::fromTheme("zoom-out",
	159	QIcon(":/icons/zoom-out.png")));
	160	_action_view_zoom_out->setObjectName(
	161	QString::fromUtf8("actionViewZoomOut"));
	162	_menu_view->addAction(_action_view_zoom_out);
	163
	164	_menu_view->addSeparator();
	165
	166	_action_view_show_cursors = new QAction(this);
	167	_action_view_show_cursors->setCheckable(true);
	168	_action_view_show_cursors->setChecked(_view->cursors_shown());
	169	_action_view_show_cursors->setShortcut(QKeySequence(Qt::Key_C));
	170	_action_view_show_cursors->setObjectName(
	171	QString::fromUtf8("actionViewShowCursors"));
	172	_action_view_show_cursors->setText(QApplication::translate(
	173	"MainWindow", "Show &Cursors", 0, QApplication::UnicodeUTF8));
	174	_menu_view->addAction(_action_view_show_cursors);
	175
	176	// Help Menu
	177	_menu_help = new QMenu(_menu_bar);
	178	_menu_help->setTitle(QApplication::translate(
	179	"MainWindow", "&Help", 0, QApplication::UnicodeUTF8));
	180
	181	_action_about = new QAction(this);
	182	_action_about->setObjectName(QString::fromUtf8("actionAbout"));
	183	_action_about->setText(QApplication::translate(
	184	"MainWindow", "&About...", 0, QApplication::UnicodeUTF8));
	185	_menu_help->addAction(_action_about);
	186
	187	_menu_bar->addAction(_menu_file->menuAction());
	188	_menu_bar->addAction(_menu_view->menuAction());
	189	_menu_bar->addAction(_menu_help->menuAction());
	190
	191	setMenuBar(_menu_bar);
	192	QMetaObject::connectSlotsByName(this);
	193
	194	// Setup the toolbar
	195	_toolbar = new QToolBar(tr("Main Toolbar"), this);
	196	_toolbar->addAction(_action_open);
	197	_toolbar->addSeparator();
	198	_toolbar->addAction(_action_view_zoom_in);
	199	_toolbar->addAction(_action_view_zoom_out);
	200	addToolBar(_toolbar);
	201
	202	// Setup the sampling bar
	203	_sampling_bar = new toolbars::SamplingBar(this);
	204
	205	// Populate the device list and select the initially selected device
	206	update_device_list();
	207
	208	connect(_sampling_bar, SIGNAL(device_selected()), this,
	209	SLOT(device_selected()));
	210	connect(_sampling_bar, SIGNAL(run_stop()), this,
	211	SLOT(run_stop()));
	212	addToolBar(_sampling_bar);
	213
	214	// Setup the context bar
	215	_context_bar = new toolbars::ContextBar(this);
	216	addToolBar(_context_bar);
	217
	218	// Set the title
	219	setWindowTitle(QApplication::translate("MainWindow", "PulseView", 0,
	220	QApplication::UnicodeUTF8));
	221
	222	// Setup _session events
	223	connect(&_session, SIGNAL(capture_state_changed(int)), this,
	224	SLOT(capture_state_changed(int)));
	225
	226	}
	227
	228	void MainWindow::session_error(
	229	const QString text, const QString info_text)
	230	{
	231	QMetaObject::invokeMethod(this, "show_session_error",
	232	Qt::QueuedConnection, Q_ARG(QString, text),
	233	Q_ARG(QString, info_text));
	234	}
	235
	236	void MainWindow::update_device_list(struct sr_dev_inst *selected_device)
	237	{
	238	assert(_sampling_bar);
	239
	240	const list<sr_dev_inst*> &devices = _device_manager.devices();
	241	_sampling_bar->set_device_list(devices);
	242
	243	if (!selected_device && !devices.empty()) {
	244	// Fall back to the first device in the list.
	245	selected_device = devices.front();
	246
	247	// Try and find the demo device and select that by default
	248	BOOST_FOREACH (struct sr_dev_inst *sdi, devices)
	249	if (strcmp(sdi->driver->name, "demo") == 0) {
	250	selected_device = sdi;
	251	}
	252	}
	253
	254	if (selected_device) {
	255	_sampling_bar->set_selected_device(selected_device);
	256	_session.set_device(selected_device);
	257	}
	258	}
	259
	260	void MainWindow::load_file(QString file_name)
	261	{
	262	const QString errorMessage(
	263	QString("Failed to load file %1").arg(file_name));
	264	const QString infoMessage;
	265	_session.load_file(file_name.toStdString(),
	266	boost::bind(&MainWindow::session_error, this,
	267	errorMessage, infoMessage));
	268	}
	269
	270	void MainWindow::show_session_error(
	271	const QString text, const QString info_text)
	272	{
	273	QMessageBox msg(this);
	274	msg.setText(text);
	275	msg.setInformativeText(info_text);
	276	msg.setStandardButtons(QMessageBox::Ok);
	277	msg.setIcon(QMessageBox::Warning);
	278	msg.exec();
	279	}
	280
	281	void MainWindow::on_actionOpen_triggered()
	282	{
	283	// Enumerate the file formats
	284	QString filters(tr("Sigrok Sessions (*.sr)"));
	285	filters.append(tr(";;All Files (.)"));
	286
	287	// Show the dialog
	288	const QString file_name = QFileDialog::getOpenFileName(
	289	this, tr("Open File"), "", filters);
	290	if (!file_name.isEmpty())
	291	load_file(file_name);
	292	}
	293
	294	void MainWindow::on_actionConnect_triggered()
	295	{
	296	// Stop any currently running capture session
	297	_session.stop_capture();
	298
	299	dialogs::Connect dlg(this, _device_manager);
	300
	301	// If the user selected a device, select it in the device list. Select the
	302	// current device otherwise.
	303	struct sr_dev_inst *const sdi = dlg.exec() ?
	304	dlg.get_selected_device() : _session.get_device();
	305
	306	update_device_list(sdi);
	307	}
	308
	309	void MainWindow::on_actionQuit_triggered()
	310	{
	311	close();
	312	}
	313
	314	void MainWindow::on_actionViewZoomIn_triggered()
	315	{
	316	_view->zoom(1);
	317	}
	318
	319	void MainWindow::on_actionViewZoomOut_triggered()
	320	{
	321	_view->zoom(-1);
	322	}
	323
	324	void MainWindow::on_actionViewShowCursors_triggered()
	325	{
	326	assert(_view);
	327
	328	const bool show = !_view->cursors_shown();
	329	if(show)
	330	_view->centre_cursors();
	331
	332	_view->show_cursors(show);
	333	}
	334
	335	void MainWindow::on_actionAbout_triggered()
	336	{
	337	dialogs::About dlg(this);
	338	dlg.exec();
	339	}
	340
	341	void MainWindow::device_selected()
	342	{
	343	_session.set_device(_sampling_bar->get_selected_device());
	344	}
	345
	346	void MainWindow::run_stop()
	347	{
	348	switch(_session.get_capture_state()) {
	349	case SigSession::Stopped:
	350	_session.start_capture(_sampling_bar->get_record_length(),
	351	boost::bind(&MainWindow::session_error, this,
	352	QString("Capture failed"), _1));
	353	break;
	354
	355	case SigSession::AwaitingTrigger:
	356	case SigSession::Running:
	357	_session.stop_capture();
	358	break;
	359	}
	360	}
	361
	362	void MainWindow::capture_state_changed(int state)
	363	{
	364	_sampling_bar->set_capture_state((pv::SigSession::capture_state)state);
	365	}
	366
	367	void MainWindow::view_selection_changed()
	368	{
	369	assert(_context_bar);
	370
	371	const list<weak_ptr<pv::view::SelectableItem> > items(
	372	_view->selected_items());
	373	_context_bar->set_selected_items(items);
	374	}
	375
	376	} // namespace pv