/*
* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
* All rights reserved.
* This component and the accompanying materials are made available
* under the terms of "Eclipse Public License v1.0"
* which accompanies this distribution, and is available
* at the URL "http://www.eclipse.org/legal/epl-v10.html".
*
* Initial Contributors:
* Nokia Corporation - initial contribution.
*
* Contributors:
*
* Description:
*
*/
#ifndef CXUISTANDBY_H
#define CXUISTANDBY_H
#include <QObject>
// constants
const int CXUI_STANDBY_CAMERA_TIMEOUT = 60000; // 60 seconds
// forward declaration
class HbDialog;
class QTimer;
class CxeEngine;
class CxuiDocumentLoader;
class CxuiCaptureKeyHandler;
/*
* class CxuiStandby continuously monitors for releasing camera when there are no user actions
* for a specific time period. Timer is used to release the camera HW and switching to stanby mode
* after a delay.Releasing the camera improves power efficiency, but creates additional latency
* when returning to pre-capture view.
*/
class CxuiStandby : public QObject
{
Q_OBJECT
public:
CxuiStandby(CxuiCaptureKeyHandler &keyHandler, CxuiDocumentLoader *documentLoader, CxeEngine *engine);
~CxuiStandby();
public:
void allowDismiss(bool allow);
bool isActive() const;
signals:
/*
* signal to prepare for standby
*/
void aboutToEnterStandby();
/*
* signal to prepare UI for exiting standby
*/
void aboutToExitStandby();
public slots:
void startTimer();
void stopTimer();
bool handleMouseEvent(QEvent *event);
void enterStandby();
void exitStandby();
private slots:
void dismissStandby();
private: // helper methods
bool proceedToStandy();
bool eventFilter(QObject *object, QEvent *event);
private:
CxuiCaptureKeyHandler &mKeyHandler;
CxuiDocumentLoader *mDocumentLoader; // not own
CxeEngine *mEngine; // not own
HbDialog *mStandbyPopup;
QTimer *mStandbyTimer;
bool mStandbyDialogVisible;
bool mAllowDismiss;
};
#endif // CXUISTANDBY_H