camerauis/cameraxui/cxengine/inc/cxeautofocuscontrolsymbian.h
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     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