/*

* Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "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:   Implements page scrolling functionality

*

*/

#ifndef WEBPAGEZOOMHANDLER_H

#define WEBPAGEZOOMHANDLER_H

//  INCLUDES

#include <e32base.h>

#include <coedef.h>

#include <w32std.h>

// MACROS

// FORWARD DECLARATIONS

class WebView;

class WebFrame;

class CAknVolumePopup;

// CLASS DECLARATION

class WebPageZoomHandler: public CBase, MCoeControlObserver {

public:  // Constructor and destructor

    /**

     * Two-phased constructor.

     **/

    static WebPageZoomHandler* NewL(WebView& webView);

    /**

     * Destructor.

     **/

    virtual ~WebPageZoomHandler();

private:  // Constructors

    /**

     * C++ default constructor.

     **/

    WebPageZoomHandler(WebView& webView);

    /**

     * By default Symbian 2nd phase constructor is private.

     **/

    void constructL();

public: 

    /**

    *  From MCoeControlObserver

     **/

    virtual void HandleControlEventL(CCoeControl* aControl,TCoeEvent aEventType);

public: // New functions

    /**

     * @since 5.0

     * @param

     * @return

     **/

    bool handlePageZoomingL(const TPointerEvent& pointerEvent);

    /**

     * @since 5.0

     * @param

     * @return

     **/

    void  showZoomSliderL();

    /**

     * @since 5.0

     * @param

     * @return

     **/

    void  hideZoomSliderL();

    /**

     * @since 5.0

     * @param

     * @return

     **/

    void setZoomLevel(TInt zoomLevel);

    /**

     * @since 5.0

     * @param

     * @return

     **/

    void updateBitmap();

    /**

     * @since 5.0

     * @param

     * @return

     **/

    WebView* view();

    /**

     * @since 5.0

     * @param

     * @return

     **/

    bool isActive();

    int stepSize();

private:   

    // Pointer to owning view

    WebView*         m_webView;     // not owned

    CAknVolumePopup* m_zoomSlider;  // owned

    CPeriodic*       m_bitmapUpdateTimer; // owned 

    int              m_stepSize;

};

#endif      //WEBPAGEZOOMHANDLER_H

// End of File