/*

* Copyright (c) 2005 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

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

* which accompanies this distribution, and is available

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

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  Class for displaying icons in viewfinder view

*

*/

#ifndef CMUSUIZOOMINDICATORS_H

#define CMUSUIZOOMINDICATORS_H

// SYSTEM

#include <AknsControlContext.h>

#include <aknutils.h>

#include <coecntrl.h>

class MAknsSkinInstance;

class CGulIcon;

class MMusUiZoomIndicatorObserver;

/** 

* Class for displaying icons in viewfinder view

* @since 2.8

*/

class CMusUiZoomIndicator : public CCoeControl

    {

    public: // Constructors and destructor

        /**

        * Symbian OS two-phased constructor.

        * @since 2.8

        * @param aController reference to CCcorController

        */

        static CMusUiZoomIndicator* NewLC( 

        						TInt aZoomMin, 

        						TInt aZoomMax, 

        						MMusUiZoomIndicatorObserver* aObserver );

        /**

        * Symbian OS two-phased constructor.

        * @since 2.8

        * @param aController reference to CCcorController

        */

        static CMusUiZoomIndicator* NewL( 

        						TInt aZoomMin, 

        						TInt aZoomMax, 

        						MMusUiZoomIndicatorObserver* aObserver );

        /**

        * Destructor.

        */

        ~CMusUiZoomIndicator();

    public: // New functions

		/**

		*

		* @since 3.2

		*/

		void SetZoomLevel( TInt aZoomLevel );

		/**

		*

		* @since 3.2

		*/

		TInt GetZoomLevel();

		/**

		*

		* @since 3.2

		*/

		void SetZoomMin( TInt aZoomMin );

		/**

		*

		* @since 3.2

		*/

		void SetZoomMax( TInt aZoomMax );

		/**

		*

		* @since 3.2

		*/

		void SetFullRect( const TRect aRect  );

	private: // From CCoeConrol

	    /**

	     * Handles the size change events.

	     *

	     */

	    void SizeChanged();

	    /**

	     * Draws the control.

	     *

	     * @param aRect The region of the control to be redrawn.

	     */

		void Draw(const TRect& aRect) const;

        TInt CountComponentControls() const;

        CCoeControl* ComponentControl( TInt aIndex ) const;

    private: // Constructors and destructor

        /**

        * C++ constructor

        * @since 2.8

        * @param aController reference to CCcorController

        */

        CMusUiZoomIndicator( TInt aZoomMin, 

        					 TInt aZoomMax, 

        					 MMusUiZoomIndicatorObserver* aObserver );

        /**

        * Symbian 2nd phase constructor.

        * @since 2.8

        */

        void ConstructL();

    private: // HELPERS

        /**

        * 

        */

		void DrawIcons( const TRect& aRect );

        /**

        * 

        */

		void UpdateZoomLayout();

        void  ConstructImageL( CEikImage* aImage,

                               MAknsSkinInstance* aSkin,

                               const TAknsItemID& aId,

                               TInt aBitmapId,

                               TInt aMaskId );

        /**

        * Callback for disable zoom indicator.

        * @since 2.8

        * @return KErrNone

        */

        static TInt DisableZoomIndicator( TAny* aThis );

        /**

        * 

        */

		void DisableTimer();

        /**

        * 

        */

		void EnableTimer();

    private: //data

        /**

        * 

        */

        TRect iParentRect;

        /**

        * 

        */

        TRect iViewfinderRect;

        /**

        * 

        */

		TInt iZoomMin;

        /**

        * 

        */

		TInt iZoomMax;

        /**

        * 

        */

		TInt iZoomLevel;

        /**

        * 

        */

        CPeriodic* iDisableZoomTimer;   // owned

        /**

        * 

        */

        TRgb iIconColor;

        /**

        * 

        */

		CEikImage* iIconElevator;

        /**

        * 

        */

		CEikImage* iIconMin;

        /**

        * 

        */

		CEikImage* iIconMax;

        /**

        * 

        */

		CEikImage* iIconBg;

        /**

        * 

        */

		TInt iTopMargin;

        /**

        * 

        */

		TInt iBottomMargin;

        /**

        * 

        */

		TInt iScaleStep;

        /**

        * 

        */

		TInt iScaleY;

        /**

        * 

        */

		TInt iMiddle;

        /**

        * NOT OWN!!!

        */

		MMusUiZoomIndicatorObserver* iObserver; 

        TInt iElevatorWidth;

        TInt iElevatorHeight;

        TRect iFullRect;

    };

#endif

// End of File