1 /*

     2 * Copyright (c) 2010 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:  Controller for managing the camera startup logo state

    15 *

    16 */

    17 

    18 #ifndef CAMSTARTUPLOGOCONTROLLER_H

    19 #define CAMSTARTUPLOGOCONTROLLER_H

    20 

    21 // INCLUDES

    22 #include <e32std.h>

    23 #include <e32base.h>

    24 

    25 enum TStartupLogoState

    26     {

    27     EStartupLogoNotVisible,

    28     EStartupLogoVisible

    29     };

    30 

    31 // CLASS DECLARATION

    32 

    33 /**

    34  *  Observer interface for listening to controller state change events

    35  * 

    36  */

    37 class MCamStartupLogoControllerObserver

    38     {

    39 public:

    40     virtual ~MCamStartupLogoControllerObserver() {}

    41 

    42     /**

    43      * Startup logo controller state changed.

    44      */

    45     virtual void StartupLogoControllerStateChanged(TStartupLogoState aNewState) = 0;

    46     };

    47 

    48 

    49 

    50 /**

    51  *  Controller for managing the camera startup logo state

    52  * 

    53  */

    54 class CCamStartupLogoController : public CBase

    55     {

    56 

    57 public:

    58     // Constructors and destructor

    59 

    60     /**

    61      * Destructor.

    62      */

    63     virtual ~CCamStartupLogoController();

    64 

    65     /**

    66      * Two-phased constructor.

    67      */

    68     static CCamStartupLogoController* NewL(TStartupLogoState aInitialState);

    69 

    70     /**

    71      * Two-phased constructor.

    72      */

    73     static CCamStartupLogoController* NewLC(TStartupLogoState aInitialState);

    74 

    75 public:

    76     /**

    77      * Add an observer. Returns an error code.

    78      */

    79     TInt AddObserver(MCamStartupLogoControllerObserver* aObserver);

    80 

    81     /**

    82      * Removes an observer.

    83      */

    84     void RemoveObserver(MCamStartupLogoControllerObserver* aObserver);

    85 

    86     /**

    87      * Get current state.

    88      */

    89     TStartupLogoState State() const;

    90 

    91     /**

    92      * Show startup logo.

    93      */

    94     void ShowLogo();

    95 

    96     /**

    97      * Hide startup logo.

    98      */

    99     void HideLogo();

   100 

   101 private:

   102 

   103     /**

   104      * Constructor for performing 1st stage construction

   105      */

   106     CCamStartupLogoController(TStartupLogoState aInitialState);

   107 

   108     /**

   109      * Symbian default constructor for performing 2nd stage construction

   110      */

   111     void ConstructL();

   112 

   113     static TInt FailSafeCallback(TAny* ptr);

   114 

   115 private:

   116     void SetState(TStartupLogoState aNewState);

   117 

   118 private: // data

   119     TStartupLogoState iState;

   120     RPointerArray<MCamStartupLogoControllerObserver> iObservers;

   121     CPeriodic* iFailSafeTimer; // own

   122     };

   123 

   124 #endif // CAMSTARTUPLOGOCONTROLLER_H