fmradio/fmradio/inc/fmradiologo.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:  Definition of the class CFMRadioLogo.
       
    15 *
       
    16 */
       
    17 
       
    18 
       
    19 #ifndef FMRADIOALFLOGO_H
       
    20 #define FMRADIOALFLOGO_H
       
    21 
       
    22 // INCLUDES
       
    23 
       
    24 #include <alf/alfcontrol.h>
       
    25 
       
    26 #include "fmradioidlecontrolinterface.h"
       
    27 // FORWARD DECLARATIONS
       
    28 
       
    29 class CAlfImageVisual;
       
    30 class MFMRadioLogoObserver;
       
    31 class CAlfAnchorLayout;
       
    32 
       
    33 // CLASS DEFINITION
       
    34 
       
    35 /**
       
    36 * Class for handling the radio icon
       
    37 * 
       
    38 */ 
       
    39 class CFMRadioLogo : public CAlfControl,
       
    40                         public MFMRadioIdleControlInterface
       
    41     {
       
    42     public:    // Constructors and destructor
       
    43         /**
       
    44         * Epoc two-phased constructor.
       
    45         * @param aEnv Reference to the Alf environment instance.
       
    46         * @return Pointer to this Indicator component.
       
    47         */
       
    48         static CFMRadioLogo* NewL( CAlfEnv& aEnv );
       
    49         
       
    50         /**
       
    51         * Destructor
       
    52         */
       
    53         virtual ~CFMRadioLogo();
       
    54 
       
    55     public:    // New functions
       
    56         /**
       
    57         * Sets the indicator opacity in visible state.
       
    58         * @param aOpacity The indicator opacity
       
    59         */
       
    60         void SetOpacityInVisibleState( const TReal aOpacity );
       
    61         
       
    62         /**
       
    63         * Sets the indicator opacity in hidden state.
       
    64         * @param aOpacity The indicator opacity
       
    65         */
       
    66         void SetOpacityInHiddenState( const TReal aOpacity );
       
    67         
       
    68         /** 
       
    69         * Sets the indicator rectangle
       
    70         * @param aRect Rectangle to the indicator
       
    71         */
       
    72         void SetRect( const TRect& aRect );
       
    73         
       
    74         /** 
       
    75         * Sets the Observer
       
    76         * @param aObserver The object to observe the control
       
    77         */
       
    78         void SetObserver( MFMRadioLogoObserver* aObserver );
       
    79         
       
    80         /** 
       
    81         * Removes the observer
       
    82         */
       
    83         void RemoveObserver( MFMRadioLogoObserver* aObserver );
       
    84         
       
    85         /** 
       
    86         * Switch to landscape image.
       
    87         * @param aShow. ETrue for landscape, EFalse for portrait 
       
    88         */        
       
    89         void SwitchToLandscapeImage( TBool aShow );
       
    90         
       
    91     private:
       
    92         /**
       
    93         * C++ default constructor
       
    94         */
       
    95         CFMRadioLogo ();
       
    96         
       
    97         /**
       
    98         * EPOC second phase constructor.
       
    99         * @param aEnv Reference to the Hitchcock environment instance.
       
   100         */
       
   101         void ConstructL( CAlfEnv& aEnv );
       
   102         
       
   103     private: // Functions from base classes
       
   104         /**
       
   105         * from MFMRadioIdleControlInterface
       
   106         */
       
   107         void Show();
       
   108         
       
   109         /**
       
   110         * from MFMRadioIdleControlInterface
       
   111         */
       
   112         void Hide();
       
   113         
       
   114         /**
       
   115         * from MFMRadioIdleControlInterface
       
   116         */        
       
   117         void Deactivate();
       
   118 
       
   119         /**
       
   120         * from CAlfControl
       
   121         */
       
   122         TBool OfferEventL( const TAlfEvent& aEvent );
       
   123         
       
   124     private:    // New functions
       
   125         /**
       
   126         * Sets the fading animation to the CAlfVisual object.
       
   127         * @param aVisual a pointer to the visual object
       
   128         * @param aFadingTime Time duration after the visual object has been faded. Fading duration in milliseconds. 
       
   129         * @param aOpacity Target opacity value
       
   130         */
       
   131         void Fade( CAlfVisual* aVisual, TInt aFadingTime, TReal aOpacity );
       
   132         
       
   133         /**
       
   134         * Sets absolute rect of the anchor by top left and bottom right points.
       
   135         * @param aAnchor Anchor layout for setting placement
       
   136         * @param aOrdinal Index of visual element
       
   137         * @param aTopLeftPosition Top left point of the rect
       
   138         * @param aBottomRightPosition Bottom right point of the rect
       
   139         */
       
   140         void SetAbsoluteCornerAnchors( CAlfAnchorLayout* aAnchor,
       
   141                                        TInt aOrdinal,
       
   142                                        const TPoint& aTopLeftPosition,
       
   143                                        const TPoint& aBottomRightPosition );
       
   144         /**
       
   145         * Creates the needed drawing layers and visual objects
       
   146         * for the logo.
       
   147         */
       
   148         void CreateImageVisualsL();
       
   149         
       
   150     private:
       
   151         /**
       
   152          * Alf custom events for the logo fade effects.
       
   153          * Logo stays visible couple of seconds after the
       
   154          * fade in event. 
       
   155          */
       
   156         enum TFadeCustomEvent
       
   157             {
       
   158             EFadeInCompleted,               // Fade in completed.
       
   159             ELogoDisplayTimerCompleted      // Visibility time ended.
       
   160             };
       
   161 
       
   162     private:// Data
       
   163         /** Anchor layout for the logo. Not owned */
       
   164         CAlfAnchorLayout* iLogoAnchor;
       
   165         /** logo opacity in visible state */
       
   166         TReal iOpacityInVisibleState;
       
   167         /** logo opacity in hidden state */
       
   168         TReal iOpacityInHiddenState;
       
   169         /** logo rectangle */
       
   170         TRect iRect;
       
   171         /** Array of observers. */
       
   172         RPointerArray<MFMRadioLogoObserver> iObservers;
       
   173         // visual containing the default radio icon. Not owned
       
   174         CAlfImageVisual* iImageVisual;
       
   175         // default radio icon in portrait mode
       
   176         TAlfImage iPortraitImage;
       
   177         // default radio icon in landscape mode
       
   178         TAlfImage iLandscapeImage;
       
   179         /** File name for the background bitmap. Owned. */
       
   180         HBufC* iBackgroundBitmapFileName;
       
   181         // flag for visibility status
       
   182         TBool iIsVisible;
       
   183     };
       
   184 
       
   185 #endif //FMRADIOALFLOGO_H