/*

* Copyright (c)  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:  CMmDrawerAnimator declaration

*

*/

#ifndef C_MMDRAWERANIMATOR_H

#define C_MMDRAWERANIMATOR_H

#include <e32base.h>

#include <e32std.h>

#ifdef RD_UI_TRANSITION_EFFECTS_LIST

#include <aknlistloadertfx.h>

#include <aknlistboxtfxinternal.h>

#include <aknlistboxtfx.h>

#endif

class CMmListBoxItemDrawer;

class TMmFloatingItem;

/**

 * Zoom ratio when no zooming is performed.

 */

const TReal KNormalStateZoomRatio = 1.0f;

/**

 * Zoom ratio when zooming is performed.

 */

const TReal KZoomStateZoomRatio = 1.25f;

/**

 *  Used by Multimedia Menu to draw Animated items.

 *  Drawer animator is an active object, that forces refreshes

 *  while floating items are available in the associated CListBoxItemDrawer.

 *  When no items are available the drawer ceases to redraw the screen.

 *  Active object becomes active when a new animation is triggered.

 *

 *  @code

 *  @endcode

 *  @lib mmwidgets

 *  @since S60 v5.0

 *  @see CListBoxItemDrawer

 *  @ingroup group_mmwidgets

 */

NONSHARABLE_CLASS( CMmDrawerAnimator ) : public CActive

    {

public:

    /**

     * Two-phased constructor.

     *

     * @since S60 v5.0

     * @param aDrawer Item drawer used to draw item.

     */

    static CMmDrawerAnimator* NewL( CMmListBoxItemDrawer& aDrawer );

    /**

     * Two-phased constructor.

     *

     * @since S60 v5.0

     * @param aDrawer Item drawer used to draw item.

     */

    static CMmDrawerAnimator* NewLC( CMmListBoxItemDrawer& aDrawer );

    /**

     * Destructor.

     *

     * @since S60 v5.0

     */

    virtual ~CMmDrawerAnimator();

    /**

     * Animates transition of the dragged item.

     * The animation starts in the current position of EDrag

     * floating item, and end in the original place of dragging

     * or destination place, if reorder occured.

     *

     * @since S60 v5.0

     */

    void AnimateDragItemTransitionL( );

    /**

     * Animates an item with index aItemFrom into position

     * indexed by aItemTo.

     *

     * @since S60 v5.0

     * @param aItemFrom Which item should be animated.

     * @param aItemTo Where to should the item be animated.

     */

    void AnimateItemSwapL( TInt aItemFrom, TInt aItemTo );

    /**

     * Animates zooming of an item.

     *

     * @since S60 v3.0

     * @param aItemIndex Index of item to be zoomed.

     * @param aZoomIn Is zooming in or out.

     */

    void AnimateItemZoomL( TInt aItemIndex, TBool aZoomIn );

    /**

     * Checks if system is ready for new animation.

     *

     * @since S60 v5.0

     * @return Is system ready so new animation can proceed.

     */

    TBool IsReadyForNewAnimation();

    /**

     * Cancel currently running or pending animations.

     *

     * @since S60 v5.0

     */

    void CancelAnimationsL();

    /**

     * Triggers animation.

     * This methods sets the Activeobject into active state

     * if floating items are available

     *

     * @since S60 v5.0

     * @return Error code

     */

    TInt Trigger();

    /**

     * Make the next animation redraw the whole screen;

     */

    void SetNextRedrawToWholeScreen();

    /**

     * Indicates that draweranimator is in garbage.

     * This is used when suite model has been destroyed so there isn't

     * anything to draw, therefore any animator attempts should be

     * dropped.

     */

    void PrepareForGarbage();

    /**

     * Calls move event.

     */

    void TriggerMoveItemL();

private:

    /**

     * Default constructor.

     *

     * @since S60 v3.0

     * @param aDrawer Object used to draw items in widgets.

     */

    CMmDrawerAnimator( CMmListBoxItemDrawer& aDrawer );

    /**

     * 2nd phase constructor.

     *

     * @since S60 v3.0

     */

    void ConstructL();

private: // From CActive

    /**

     * Draws next animation phase.

     *

     * @since S60 v3.0

     */

    void RunL();

    /**

     * Cancels animation timer. Stops animation.

     *

     * @since S60 v3.0

     */

    void DoCancel();

    /**

     * Handles error if error an error occured.

     *

     * @since S60 v3.0

     * @param aError Error code which occurred.

     * @return Error code for error handling.

     */

    TInt RunError( TInt aError );

    /**

     * Adjusts rect to non touch.

     *

     * @since S60 v3.0

     * @param aRefreshRect Refresh rect.

     * @return Adjusted rect.

     */

    TRect AdjustRefreshRectToNonTouch( const TRect& aRefreshRect );

private: // Data

    /**

     * Timer

     */

    RTimer iTimer;

    /**

     * Associated item drawer.

     */

    CMmListBoxItemDrawer& iDrawer;

    /**

     * Number of animation frames

     */

    TInt iAnimateFrames;

    /**

     * Delay between redrawing.

     */

    TTimeIntervalMicroSeconds iDelay;

    /**

     * Last redraw time

     */

    TTime iLastRedrawTime;

    /**

     * Effects api.

     */

    MAknListBoxTfx *iTransTfx;

    /**

     * Effects api.

     */

    MAknListBoxTfxInternal *iTransTfxInternal;

    /**

     * Highlight noted when last redraw occured.

     */

    TInt iLastNotedHighlight;

    /**

     * Top item index noted when last redraw occured.

     */

    TInt iLastNotedTopItem;

    /**

     * Vertical offset noted when last redraw occured.

     */

    TInt iLastNotedVerticalOffset;

    /**

     * Holds the previous animation refresh rectangle.

     */

    TRect iPreviousRefreshRect;

    /**

     * Holds the number of frames to animate.

     */

    const TInt iUsualAnimationFramesCount;

    /**

     * Holds the previous animation refresh rectangle.

     */

    TBool iPreparedForGarbage;

    };

#endif // MMDRAWERANIMATOR_H