/*******************************************************************************

 * Copyright (c) 2005, 2010 Nokia Corporation and/or its subsidiary(-ies).

 * All rights reserved. This program and the accompanying materials

 * are made available under the terms of the Eclipse Public License v1.0

 * which accompanies this distribution, and is available at

 * http://www.eclipse.org/legal/epl-v10.html

 *

 * Contributors:

 *     Nokia Corporation - S60 implementation

 *******************************************************************************/

#ifndef SWTSLIDER_H

#define SWTSLIDER_H

#include "swtcontrolbase.h"

class CAORotateImage;

class MTouchFeedback;

/**

 * CSwtSlider

 * @lib eswt.dll

 */

NONSHARABLE_CLASS(CSwtSlider)

        : public CAknControl

        , public ASwtControlBase

        , public MSwtSlider

{

public:

    /**

    * The 1st and 2nd phase constructor wrapper.

    * @param aDisplay The Display to associate with.

    * @param aPeer The peer to its java counterpart.

    * @param aParent Parent composite.

    * @param aStyle The control's style.

    * @return CSwtSlider*  A pointer to the  created CSwtSlider object.

    */

    static CSwtSlider* NewL(MSwtDisplay& aDisplay, TSwtPeer aPeer,

    MSwtComposite& aParent, TInt aStyle);

private:

    /**

    * Contructor.

    * @param aDisplay The Display to associate with

    * @param aPeer The peer to its java counterpart

    * @param aParent Parent composite

    * @param aStyle The style

    */

    CSwtSlider(MSwtDisplay& aDisplay, TSwtPeer aPeer,

               MSwtComposite& aParent, TInt aStyle);

    /**

    * Destructor.

    */

    ~CSwtSlider();

    /**

    * Second phase constructor

    */

    void ConstructL();

private:

    /**

    * Adjust the current selection value with the maximun, minimun and iIncrement.

    */

    void AdjustSelectionValue();

    /**

    * Update the Slider image with the maximun, minimun and iIncrement.

    * Just call this method if one of this previous value changed,

    * because it reload the image, and compute the rotation if the

    * Slider have the VERTICAL Style and draw it.

    */

    void UpdateSliderImageL();

    /**

    * Clip the image with the rectangle of this Control and draw it.

    *

    * @param aGC    The graphic context where the image will be drawing.

    * @param aRect  The rectangle need to be redrawing to draw.

    *

    */

    void ClipAndDrawImage(CWindowGc& aGC, const TRect& aRect) const;

    /**

    * Creates the slider graphic. The graphic is recreated every time

    * the marker is moved. The input parameters are used to calculate

    * the position of the marker in the returned slider graphic.

    *

    * @param aValue     The current value of the slider.

    * @param aMinValue  The minimum value of the slider.

    * @param aMaxValue  The maximum value of the slider.

    * @return The slider graphic owned by the caller.

    */

    CGulIcon* CreateSliderIconL(TInt aValue, TInt aMinValue, TInt aMaxValue);

    /**

    * Determines the preferred size of the slider graphic for

    * the currently active screen resolution.

    *

    * @return The preferred size of the slider graphic.

    */

    TSize GetPreferredSliderSize() const;

    /**

     * Make sure the feedback area follows the control's bounds.

     */

    void UpdateTouchFeedbackRect() const;

    /**

     * Resource change leaving helper

     */

    void SwtHandleResourceChangeL(TInt aType);

#ifdef RD_SCALABLE_UI_V2

    TInt CalcAlignedValue(const TPoint& aPoint);

#endif // RD_SCALABLE_UI_V2

// From CCoeControl

public:

    TSize MinimumSize();

    void  MakeVisible(TBool aVisible);

    void  SetDimmed(TBool aDimmed);

    TKeyResponse OfferKeyEventL(const TKeyEvent& aKeyEvent, TEventCode aType);

    void  Draw(const TRect& aRect) const;

    void  HandleResourceChange(TInt aType);

protected:

    void  FocusChanged(TDrawNow aDrawNow);

    void  SizeChanged();

    void  PositionChanged();

    TTypeUid::Ptr MopSupplyObject(TTypeUid aId);

#ifdef RD_SCALABLE_UI_V2

    void  HandlePointerEventL(const TPointerEvent& aPointerEvent);

#endif // RD_SCALABLE_UI_V2

// From MSwtControl

public:

    CCoeControl& CoeControl();

    const CCoeControl& CoeControl() const;

    void  ProcessKeyEventL(const TKeyEvent& aKeyEvent, TEventCode aType);

    TSize ComputeSizeL(TInt aWHint, TInt aHHint);

    TBool SetSwtFocus(TInt aReason = KSwtFocusByApi);

// From MSwtSlider

public:

    MSwtControl* Control();

    TInt GetMaximum() const;

    TInt GetMinimum() const;

    TInt GetPageIncrement() const;

    TInt GetIncrement() const;

    TInt GetSelection() const;

    void SetMaximum(TInt aValue);

    void SetMinimum(TInt aValue);

    void SetPageIncrement(TInt aValue);

    void SetIncrement(TInt aValue);

    void SetSelection(TInt aValue);

    void SetValues(TInt aSelection, TInt aMinimum, TInt aMaximum,

                   TInt aIncrement, TInt aPageIncrement);

// Data

private:

    /**

     *  The minimum value for the Slider.

     */

    TInt iMinimum;

    /**

     *  The maximun value for the Slider.

     */

    TInt iMaximum;

    /**

     *  The current selection on the Slider.

     */

    TInt iSelection;

    /**

     *  The increment value for the Slider.

     */

    TInt iIncrement;

    /**

     *  The page increment value for the Slider.

     */

    TInt iPageIncrement;

    /**

     *  Contains the key value which increase the selection.

     */

    TInt iIncreaseKey;

    /**

     *  Contains the key value which decrease the selection.

     */

    TInt iDecreaseKey;

    /**

     *  The image of the Slider.

     */

    CFbsBitmap* iSliderImage;

    /**

     *  The mask for image of the Slider.

     */

    CFbsBitmap* iSliderImageMask;

    /**

     *  The active object which rotate the VERTICAL Slider image.

     */

    CAORotateImage* iImagesRotator;

    /**

     *  The image Size in pixel.

     */

    TSize iImageSize;

    /**

     * Feedback instance.

     * Not own.

     */

    MTouchFeedback* iFeedback;

};

#endif // SWTSLIDER_H