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sessionwidget.cpp
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sessionwidget.cpp
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/***************************************************************************
* Copyright (C) 2010 by Flavio Castelli <flavio@castelli.name> *
* *
* 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 Street, Fifth Floor, Boston, MA 02110-1301 USA . *
***************************************************************************/
#include "sessionwidget.h"
#include "common.h"
#include <QtCore/QList>
#include <QtCore/QSignalMapper>
#include <QtCore/QVariant>
#include <QtDBus/QDBusInterface>
#include <QtGui/QLabel>
#include <QtGui/QGraphicsLinearLayout>
#include <QtGui/QShowEvent>
#include <kiconloader.h>
#include <ksharedconfig.h>
#include <kuser.h>
#include <kworkspace/kdisplaymanager.h>
#include <plasma/widgets/iconwidget.h>
#include <plasma/widgets/separator.h>
bool operator <(const Plasma::IconWidget& a, const Plasma::IconWidget& b)
{
return (a.text() < b.text());
}
static Plasma::IconWidget *createButton(QGraphicsWidget *parent)
{
Plasma::IconWidget *button = new Plasma::IconWidget(parent);
button->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed);
button->setOrientation(Qt::Horizontal);
button->setDrawBackground(true);
button->setTextBackgroundColor(QColor(Qt::transparent));
return button;
}
SessionWidget::SessionWidget( QGraphicsItem * parent, Qt::WindowFlags wFlags)
: QGraphicsWidget ( parent, wFlags)
{
this->setFocusPolicy(Qt::ClickFocus);
m_signalMapper = new QSignalMapper(this);
QGraphicsLinearLayout* mainLayout = new QGraphicsLinearLayout(Qt::Vertical);
mainLayout->setSpacing(0);
mainLayout->addStretch();
this->setLayout(mainLayout);
connect( m_signalMapper, SIGNAL(mapped(int)),
this, SLOT(slotSwitchSession(int)));
Q_ASSERT(mainLayout->count() == 0);
//Cache the icon pixmaps
QSize iconSize = QSize(KIconLoader::SizeSmallMedium, KIconLoader::SizeSmallMedium);
SessList sessions;
KDisplayManager manager;
manager.localSessions(sessions);
QList<QGraphicsWidget*> entries;
foreach(SessEnt session, sessions) {
QPixmap pixmap;
KUser user (session.user);
if (!user.isValid())
continue;
if (session.tty)
continue;
Plasma::IconWidget* entry = createButton(this);
pixmap = getUserIcon(user);
entry->setIcon(pixmap);
QString username = getUsername(false, user);
entry->setText(username);
connect(entry, SIGNAL(clicked()), m_signalMapper, SLOT(map()));
m_signalMapper->setMapping(entry, session.vt);
if (session.self)
entry->setEnabled(false);
entries << entry;
}
// sort the entries alphabetically
qSort(entries);
// add separator
Plasma::Separator* separator = new Plasma::Separator(this);
separator->setOrientation(Qt::Horizontal);
entries << separator;
// add "Login window"
Plasma::IconWidget* entry = createButton(this);
entry->setIcon(getSessionSwitchIcon());
entry->setText(i18n("Open login window"));
connect(entry, SIGNAL(clicked()), m_signalMapper, SLOT(map()));
m_signalMapper->setMapping(entry, SessionWidget::OPEN_LOGIN);
entries << entry;
// add "Lock screen"
Plasma::IconWidget* entryLockScreen = createButton(this);
entryLockScreen->setIcon(getLockScreenIcon());
entryLockScreen->setText(i18n("Lock Screen"));
connect(entryLockScreen, SIGNAL(clicked()), m_signalMapper, SLOT(map()));
m_signalMapper->setMapping(entryLockScreen, SessionWidget::LOCK_SCREEN);
entries << entryLockScreen;
// add "Logout"
Plasma::IconWidget* entryLogout = createButton(this);
entryLogout->setIcon(getLogoutIcon());
entryLogout->setText(i18n("Leave..."));
connect(entryLogout, SIGNAL(clicked()), m_signalMapper, SLOT(map()));
m_signalMapper->setMapping(entryLogout, SessionWidget::LEAVE);
entries << entryLogout;
foreach(QGraphicsWidget* entry, entries) {
mainLayout->addItem(entry);
}
}
void SessionWidget::slotSwitchSession(int vt)
{
emit switching();
KDisplayManager manager;
if (vt == SessionWidget::OPEN_LOGIN) {
// Figure out screensaver's 'lock' option value
KSharedConfigPtr config = KSharedConfig::openConfig("kscreensaverrc");
KConfigGroup screensaverGroup = config->group("ScreenSaver");
bool lockToggled = screensaverGroup.readEntry("Lock", false);
// lock screen and start new session
QDBusInterface screensaver("org.freedesktop.ScreenSaver",
"/ScreenSaver", "org.freedesktop.ScreenSaver");
if (lockToggled)
screensaver.call( "Lock" );
else
screensaver.call( "SetActive", true );
manager.startReserve();
} else if (vt == SessionWidget::LOCK_SCREEN) {
// lock screen
QDBusInterface screensaver("org.freedesktop.ScreenSaver",
"/ScreenSaver", "org.freedesktop.ScreenSaver");
screensaver.call( "Lock" );
} else if (vt == SessionWidget::LEAVE) {
// logout
KWorkSpace::requestShutDown( KWorkSpace::ShutdownConfirmDefault,
KWorkSpace::ShutdownTypeDefault,
KWorkSpace::ShutdownModeDefault);
} else
manager.lockSwitchVT(vt);
}