1 /*

     2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:

    15 *

    16 */

    17 

    18 #ifndef CXEAUTOFOCUSCONTROLSYMBIAN_H

    19 #define CXEAUTOFOCUSCONTROLSYMBIAN_H

    20 

    21 #include <QVariant>

    22 #include <ecam.h> // CCamera

    23 #include <ecam/ecamadvsettingsintf.h> // CCamera

    24 #include "cxenamespace.h"

    25 #include "cxeautofocuscontrol.h"

    26 #include "cxestatemachine.h"

    27 

    28 //forward declarations

    29 class CxeCameraDevice;

    30 

    31 

    32 

    33 /**

    34  * CxeAutoFocusControl is responsible for handling Autofocus events from the camera adaptation.

    35  * It also routes the Autofocus successful and failed events to the clients interested in Žknowing the

    36  * status of Autofocus.

    37  */

    38 class CxeAutoFocusControlSymbian : public CxeAutoFocusControl,

    39                                    public CxeStateMachine

    40     {

    41     Q_OBJECT

    42 public:

    43 

    44     CxeAutoFocusControlSymbian( CxeCameraDevice &cameraDevice );

    45     virtual ~CxeAutoFocusControlSymbian();

    46 

    47     CxeError::Id  start();

    48     void cancel();

    49     void setMode( CxeAutoFocusControl::Mode newMode );

    50     CxeAutoFocusControl::Mode mode() const;

    51 

    52     CxeAutoFocusControl::State state() const;

    53     bool supported() const;

    54 

    55 protected: // from CxeStateMachine

    56     void handleStateChanged( int newStateId, CxeError::Id error );

    57 

    58 protected:

    59     void initializeStates();

    60     // intializes all the resources we need for AF functionality

    61     void initializeResources();

    62 

    63     void setFocusRange(CCamera::CCameraAdvancedSettings::TFocusRange range);

    64     CCamera::CCameraAdvancedSettings::TFocusRange  focusRange() const;

    65 

    66     void setFocusType(CCamera::CCameraAdvancedSettings::TAutoFocusType type);

    67     int supportedFocusTypes() const;

    68     CCamera::CCameraAdvancedSettings::TAutoFocusType focusType() const;

    69 

    70 protected slots:

    71 

    72     // notifications when camera reference is changed

    73     void prepareForCameraDelete();

    74     void handleCameraAllocated(CxeError::Id error);

    75 

    76     // notification for when camera is released

    77     void prepareForRelease();

    78 

    79     // Handle ECam events

    80     void handleCameraEvent( int eventUid, int error );

    81     void handleSceneChanged(CxeScene& scene);

    82 

    83 private:

    84 

    85     // handles to-do things if the event is AF event

    86     void handleAfEvent(int eventUid, int error);

    87 

    88 protected:

    89     CxeCameraDevice &mCameraDevice;

    90     CCamera::CCameraAdvancedSettings *mAdvancedSettings; // not owned

    91     CxeAutoFocusControl::Mode mAfMode;

    92     CCamera::CCameraAdvancedSettings::TFocusRange mAFRange;

    93     bool mCancelled;

    94     };

    95 

    96 #endif // CXEAUTOFOCUSCONTROLSYMBIAN_H