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/*
* This file is part of unity-2d
*
* Copyright 2011 Canonical Ltd.
*
* Authors:
* - Aurélien Gâteau <aurelien.gateau@canonical.com>
*
* 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; version 3.
*
* 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, see <http://www.gnu.org/licenses/>.
*/
// Self
#include "dashclient.h"
// Local
#include "config.h"
// libunity-2d
#include <debug_p.h>
// Qt
#include <QApplication>
#include <QDBusConnection>
#include <QDBusConnectionInterface>
#include <QDBusInterface>
#include <QDBusServiceWatcher>
#include <QDesktopWidget>
#include <QRect>
static const char* DASH_DBUS_SERVICE = "com.canonical.Unity2d.Dash";
static const char* DASH_DBUS_PATH = "/Dash";
static const char* DASH_DBUS_INTERFACE = "com.canonical.Unity2d.Dash";
static const int DASH_MIN_SCREEN_WIDTH = 1280;
static const int DASH_MIN_SCREEN_HEIGHT = 1084;
DashClient::DashClient(QObject* parent)
: QObject(parent)
, m_dashDbusIface(0)
, m_dashActive(false)
, m_alwaysFullScreen(false)
{
/* Check if the dash is already up and running by asking the bus instead of
trying to create an instance of the interface. Creating an instance would
cause D-Bus to activate the dash and we don’t want this to happen, the
dash should be started on demand only. */
QDBusConnectionInterface* sessionBusIFace = QDBusConnection::sessionBus().interface();
QDBusReply<bool> reply = sessionBusIFace->isServiceRegistered(DASH_DBUS_SERVICE);
if (reply.isValid() && reply.value()) {
connectToDash();
} else {
/* The dash is not running: monitor its registration on the bus so we
can connect to it when it comes up. */
QDBusServiceWatcher* watcher = new QDBusServiceWatcher(DASH_DBUS_SERVICE,
QDBusConnection::sessionBus(),
QDBusServiceWatcher::WatchForRegistration,
this);
connect(watcher, SIGNAL(serviceRegistered(QString)), SLOT(connectToDash()));
}
connect(QApplication::desktop(), SIGNAL(resized(int)), SLOT(updateAlwaysFullScreen()));
// FIXME: we need to use a queued connection here otherwise QConf will deadlock for some reason
// when we read any property from the slot (which we need to do). We need to check why this
// happens and report a bug to dconf-qt to get it fixed.
connect(&unity2dConfiguration(), SIGNAL(formFactorChanged(QString)),
SLOT(updateAlwaysFullScreen()), Qt::QueuedConnection);
updateAlwaysFullScreen();
}
void DashClient::connectToDash()
{
if (m_dashDbusIface) {
return;
}
m_dashDbusIface = new QDBusInterface(DASH_DBUS_SERVICE, DASH_DBUS_PATH, DASH_DBUS_INTERFACE,
QDBusConnection::sessionBus(), this);
connect(m_dashDbusIface, SIGNAL(activeChanged(bool)),
SLOT(slotDashActiveChanged(bool)));
connect(m_dashDbusIface, SIGNAL(activeLensChanged(const QString&)),
SLOT(slotDashActiveLensChanged(const QString&)));
QVariant value = m_dashDbusIface->property("active");
if (value.isValid()) {
m_dashActive = value.toBool();
} else {
UQ_WARNING << "Fetching Dash.active property failed";
}
value = m_dashDbusIface->property("activeLens");
if (value.isValid()) {
m_dashActiveLens = value.toString();
} else {
UQ_WARNING << "Fetching Dash.activeLens property failed";
}
updateActivePage();
}
DashClient* DashClient::instance()
{
static DashClient* client = new DashClient(qApp);
return client;
}
void DashClient::slotDashActiveChanged(bool value)
{
if (m_dashActive != value) {
m_dashActive = value;
updateActivePage();
}
}
void DashClient::slotDashActiveLensChanged(const QString& lens)
{
if (m_dashActiveLens != lens) {
m_dashActiveLens = lens;
updateActivePage();
}
}
QString DashClient::activePage() const
{
return m_activePage;
}
void DashClient::setActivePage(const QString& page, const QString& lensId)
{
if (m_activePage == page) {
return;
}
if (page.isEmpty()) {
// Use m_dashDbusIface to close the dash, but only if it is running
if (m_dashDbusIface) {
m_dashDbusIface->setProperty("active", false);
}
return;
}
// Use a separate QDBusInterface so that the dash is started if it is not
// already running
QDBusInterface iface(DASH_DBUS_SERVICE, DASH_DBUS_PATH, DASH_DBUS_INTERFACE);
if (page == "home") {
iface.asyncCall("activateHome");
} else {
iface.asyncCall("activateLens", lensId);
}
}
void DashClient::updateActivePage()
{
QString activePage;
if (m_dashActive) {
activePage = m_dashActiveLens.isEmpty() ? "home" : m_dashActiveLens;
}
if (m_activePage != activePage) {
m_activePage = activePage;
activePageChanged(m_activePage);
}
}
QSize DashClient::minimumSizeForDesktop()
{
return QSize(DASH_MIN_SCREEN_WIDTH, DASH_MIN_SCREEN_HEIGHT);
}
void DashClient::updateAlwaysFullScreen()
{
bool alwaysFullScreen;
if (unity2dConfiguration().property("formFactor").toString() != "desktop") {
alwaysFullScreen = true;
} else {
QRect rect = QApplication::desktop()->screenGeometry(QPoint());
QSize minSize = minimumSizeForDesktop();
alwaysFullScreen = rect.width() < minSize.width() && rect.height() < minSize.height();
}
if (m_alwaysFullScreen != alwaysFullScreen) {
m_alwaysFullScreen = alwaysFullScreen;
Q_EMIT alwaysFullScreenChanged();
}
}
bool DashClient::alwaysFullScreen() const
{
return m_alwaysFullScreen;
}
#include "dashclient.moc"
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