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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qiosapplicationstate.h"
#include "qiosglobal.h"
#include "qiosintegration.h"
#include <qpa/qwindowsysteminterface.h>
#include <QtCore/qcoreapplication.h>
#include <QtCore/private/qcore_mac_p.h>
#include <QtGui/private/qguiapplication_p.h>
QT_BEGIN_NAMESPACE
using namespace Qt::StringLiterals;
static void qRegisterApplicationStateNotifications()
{
NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
NSOperationQueue *mainQueue = [NSOperationQueue mainQueue];
// Map between notifications and corresponding application state. Note that
// there's no separate notification for moving to UIApplicationStateInactive,
// so we use UIApplicationWillResignActiveNotification as an intermediate.
using NotificationMap = QMap<NSNotificationName, UIApplicationState>;
static auto notifications = qt_apple_isApplicationExtension() ? NotificationMap{
{ NSExtensionHostWillEnterForegroundNotification, UIApplicationStateInactive },
{ NSExtensionHostDidBecomeActiveNotification, UIApplicationStateActive },
{ NSExtensionHostWillResignActiveNotification, UIApplicationStateInactive },
{ NSExtensionHostDidEnterBackgroundNotification, UIApplicationStateBackground },
} : NotificationMap{
{ UIApplicationWillEnterForegroundNotification, UIApplicationStateInactive },
{ UIApplicationDidBecomeActiveNotification, UIApplicationStateActive },
{ UIApplicationWillResignActiveNotification, UIApplicationStateInactive },
{ UIApplicationDidEnterBackgroundNotification, UIApplicationStateBackground },
};
for (auto i = notifications.constBegin(); i != notifications.constEnd(); ++i) {
[notificationCenter addObserverForName:i.key() object:nil queue:mainQueue
usingBlock:^void(NSNotification *notification) {
NSRange nameRange = NSMakeRange(2, notification.name.length - 14);
QString reason = QString::fromNSString([notification.name substringWithRange:nameRange]);
QIOSApplicationState::handleApplicationStateChanged(i.value(), reason);
}];
}
if (qt_apple_isApplicationExtension()) {
// Extensions are not allowed to access UIApplication, so we assume the state is active
QIOSApplicationState::handleApplicationStateChanged(UIApplicationStateActive,
"Extension loaded, assuming state is active"_L1);
} else {
// Initialize correct startup state, which may not be the Qt default (inactive)
UIApplicationState startupState = qt_apple_sharedApplication().applicationState;
QIOSApplicationState::handleApplicationStateChanged(startupState, "Application loaded"_L1);
}
}
Q_CONSTRUCTOR_FUNCTION(qRegisterApplicationStateNotifications)
QIOSApplicationState::QIOSApplicationState()
{
if (!qt_apple_isApplicationExtension()) {
UIApplicationState startupState = qt_apple_sharedApplication().applicationState;
QIOSApplicationState::handleApplicationStateChanged(startupState, "Application launched"_L1);
}
}
void QIOSApplicationState::handleApplicationStateChanged(UIApplicationState uiState, const QString &reason)
{
Qt::ApplicationState oldState = QGuiApplication::applicationState();
Qt::ApplicationState newState = toQtApplicationState(uiState);
qCDebug(lcQpaApplication) << qPrintable(reason) << "- moving from" << oldState << "to" << newState;
if (QIOSIntegration *integration = QIOSIntegration::instance()) {
emit integration->applicationState.applicationStateWillChange(oldState, newState);
QWindowSystemInterface::handleApplicationStateChanged(newState);
emit integration->applicationState.applicationStateDidChange(oldState, newState);
qCDebug(lcQpaApplication) << "done moving to" << newState;
} else {
qCDebug(lcQpaApplication) << "no platform integration yet, setting state directly";
QGuiApplicationPrivate::applicationState = newState;
}
}
Qt::ApplicationState QIOSApplicationState::toQtApplicationState(UIApplicationState state)
{
switch (state) {
case UIApplicationStateActive: return Qt::ApplicationActive;
case UIApplicationStateInactive: return Qt::ApplicationInactive;
case UIApplicationStateBackground: return Qt::ApplicationSuspended;
}
}
#include "moc_qiosapplicationstate.cpp"
QT_END_NAMESPACE
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