camerauis/cameraxui/cxengine/src/cxesensoreventhandlersymbian.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 16 Apr 2010 14:51:30 +0300
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/*
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* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:
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*
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*/
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#include "xqdeviceorientation.h"
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#include "cxesensoreventhandlersymbian.h"
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#include "cxutils.h"
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CxeSensorEventHandlerSymbian::CxeSensorEventHandlerSymbian()
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: mOrientationSensor(NULL)
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{
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    CX_DEBUG_ENTER_FUNCTION();
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    CX_DEBUG_EXIT_FUNCTION();
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}
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CxeSensorEventHandlerSymbian::~CxeSensorEventHandlerSymbian()
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{
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    CX_DEBUG_ENTER_FUNCTION();
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    CX_DEBUG_EXIT_FUNCTION();
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}
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/*
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* initializes and enables all supported sensor events
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*/
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void CxeSensorEventHandlerSymbian::init()
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{
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    CX_DEBUG_ENTER_FUNCTION();
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    enableOrientationSensor();
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    CX_DEBUG_EXIT_FUNCTION();
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}
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/*
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* closes all supported sensors.
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*/
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void CxeSensorEventHandlerSymbian::deinit()
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{
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    CX_DEBUG_ENTER_FUNCTION();
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    disableOrientationSensor();
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    CX_DEBUG_EXIT_FUNCTION();
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}
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/*
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 * Initializes and opens connection to recieve orientation sensor events
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 */
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void CxeSensorEventHandlerSymbian::enableOrientationSensor()
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{
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    CX_DEBUG_ENTER_FUNCTION();
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    if( mOrientationSensor == NULL) {
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        mOrientationSensor = new XQDeviceOrientation(this);
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        if (mOrientationSensor) {
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        // connect signals from orientationsensor, so we recieve events when orientation changes
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        QObject::connect( mOrientationSensor,
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                          SIGNAL(orientationChanged(XQDeviceOrientation::DisplayOrientation)),
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                          this,SLOT(handleOrientationChanged(XQDeviceOrientation::DisplayOrientation)) );
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        // open the sensor connection
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        mOrientationSensor->open();
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        }
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    }
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    CX_DEBUG_EXIT_FUNCTION();
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}
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/*
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 * Closes and destroys connection to orientation sensor events.
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 */
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void CxeSensorEventHandlerSymbian::disableOrientationSensor()
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{
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    CX_DEBUG_ENTER_FUNCTION();
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    if (mOrientationSensor) {
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        mOrientationSensor->close();
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        delete mOrientationSensor;
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        mOrientationSensor = NULL;
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    }
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    CX_DEBUG_EXIT_FUNCTION();
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}
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/*
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 * Closes and destroys connection to orientation sensor events.
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 */
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QVariant CxeSensorEventHandlerSymbian::sensorData(CxeSensorEventHandlerSymbian::SensorType type)
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{
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    CX_DEBUG_ENTER_FUNCTION();
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    QVariant data;
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    if (mOrientationSensor && type == CxeSensorEventHandler::OrientationSensor) {
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        data = qVariantFromValue<Cxe::DeviceOrientation > (mapOrientationSensorData(mOrientationSensor->orientation()));
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    }
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    CX_DEBUG_EXIT_FUNCTION();
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    return data;
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}
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/*
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 * Emits signal whenever we receive data from orientation sensor.
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 */
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void CxeSensorEventHandlerSymbian::handleOrientationChanged(XQDeviceOrientation::DisplayOrientation sensorData)
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{
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    CX_DEBUG_ENTER_FUNCTION();
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    QVariant data = qVariantFromValue<Cxe::DeviceOrientation > (mapOrientationSensorData(sensorData));
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    emit sensorEvent(CxeSensorEventHandler::OrientationSensor, data);
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    CX_DEBUG_EXIT_FUNCTION();
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}
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/*
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* Maps sensor data to camera enums
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*/
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Cxe::DeviceOrientation
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CxeSensorEventHandlerSymbian::mapOrientationSensorData(XQDeviceOrientation::DisplayOrientation sensorData)
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{
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    CX_DEBUG_ENTER_FUNCTION();
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    Cxe::DeviceOrientation uiOrientation(Cxe::Orientation0);
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    switch (sensorData) {
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        case XQDeviceOrientation::OrientationDisplayUpwards:
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        case XQDeviceOrientation::OrientationDisplayDownwards:
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            uiOrientation = Cxe::OrientationNone;
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            break;
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        case XQDeviceOrientation::OrientationDisplayRightUp:
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        case XQDeviceOrientation::OrientationUndefined:
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            uiOrientation = Cxe::Orientation0;
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            break;
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        case XQDeviceOrientation::OrientationDisplayUp:
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            uiOrientation = Cxe::Orientation90;
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            break;
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        case XQDeviceOrientation::OrientationDisplayLeftUp:
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            uiOrientation = Cxe::Orientation180;
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            break;
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        case XQDeviceOrientation::OrientationDisplayDown:
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            uiOrientation = Cxe::Orientation270;
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            break;
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        default:
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            break;
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    }
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    CX_DEBUG_EXIT_FUNCTION();
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    return uiOrientation;
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}
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// end of file