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Diffstat (limited to 'src/plugins/platforms/ios/qiosapplicationstate.mm')
| -rw-r--r-- | src/plugins/platforms/ios/qiosapplicationstate.mm | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/src/plugins/platforms/ios/qiosapplicationstate.mm b/src/plugins/platforms/ios/qiosapplicationstate.mm new file mode 100644 index 0000000000..df64edf465 --- /dev/null +++ b/src/plugins/platforms/ios/qiosapplicationstate.mm @@ -0,0 +1,162 @@ +/**************************************************************************** +** +** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the plugins of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and Digia. For licensing terms and +** conditions see http://qt.digia.com/licensing. For further information +** use the contact form at http://qt.digia.com/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Digia gives you certain additional +** rights. These rights are described in the Digia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#import <UIKit/UIKit.h> + +#include <qpa/qwindowsysteminterface.h> +#include "qiosapplicationstate.h" + +@interface QIOSApplicationStateListener : NSObject +@end + +@implementation QIOSApplicationStateListener + +- (id) init +{ + self = [super init]; + if (self) { + // Listen for application state changes. + // Note: We use notifications rather than application delegate callbacks to + // also support hybrid applications were QIOSApplicationDelegate is not in use. + [[NSNotificationCenter defaultCenter] + addObserver:self + selector:@selector(applicationDidBecomeActive) + name:UIApplicationDidBecomeActiveNotification + object:nil]; + [[NSNotificationCenter defaultCenter] + addObserver:self + selector:@selector(applicationWillResignActive) + name:UIApplicationWillResignActiveNotification + object:nil]; + [[NSNotificationCenter defaultCenter] + addObserver:self + selector:@selector(applicationDidEnterBackground) + name:UIApplicationDidEnterBackgroundNotification + object:nil]; + } + return self; +} + +- (void) dealloc +{ + [[NSNotificationCenter defaultCenter] + removeObserver:self + name:UIApplicationDidBecomeActiveNotification + object:nil]; + [[NSNotificationCenter defaultCenter] + removeObserver:self + name:UIApplicationWillResignActiveNotification + object:nil]; + [[NSNotificationCenter defaultCenter] + removeObserver:self + name:UIApplicationDidEnterBackgroundNotification + object:nil]; + [super dealloc]; +} + +- (void) applicationDidBecomeActive +{ + [self handleApplicationStateChanged:UIApplicationStateActive]; +} + +- (void) applicationWillResignActive +{ + // Note that UIApplication is still UIApplicationStateActive at this + // point, but since there is no separate notification for the inactive + // state, we report UIApplicationStateInactive now: + [self handleApplicationStateChanged:UIApplicationStateInactive]; +} + +- (void) applicationDidEnterBackground +{ + [self handleApplicationStateChanged:UIApplicationStateBackground]; +} + +- (void) handleApplicationStateChanged:(UIApplicationState) uiApplicationState +{ + Qt::ApplicationState state; + switch (uiApplicationState) { + case UIApplicationStateActive: + // The application is visible in front, and receiving events: + state = Qt::ApplicationActive; + break; + case UIApplicationStateInactive: + // The app is running in the foreground but is not receiving events. This + // typically happens while transitioning to/from active/background, like + // upon app launch or when receiving incoming calls: + state = Qt::ApplicationInactive; + break; + case UIApplicationStateBackground: + // Normally the app would enter this state briefly before it gets + // suspeded (you have five seconds, according to Apple). + // You can request more time and start a background task, which would + // normally map closer to Qt::ApplicationHidden. But since we have no + // API for doing that yet, we handle this state as "about to be suspended". + // Note: A screen-shot for the SpringBoard will also be taken after this + // call returns. + state = Qt::ApplicationSuspended; + break; + } + QWindowSystemInterface::handleApplicationStateChanged(state); +} + +@end + +QT_BEGIN_NAMESPACE + +QIOSApplicationState::QIOSApplicationState() + : m_listener([[QIOSApplicationStateListener alloc] init]) +{ + // Update the current state now, since we have missed all the updates + // posted from AppKit so far. But let QPA finish initialization first: + dispatch_async(dispatch_get_main_queue(), ^{ + UIApplicationState state = [UIApplication sharedApplication].applicationState; + [m_listener handleApplicationStateChanged:state]; + }); +} + +QIOSApplicationState::~QIOSApplicationState() +{ + [m_listener release]; +} + +QT_END_NAMESPACE + |