1 /*

     2 * Copyright (c) 2008-2009 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:    List utilities

    15 *

    16 */

    17 

    18 

    19 

    20 

    21 #ifndef __GLXLISTUTILS_H__

    22 #define __GLXLISTUTILS_H__

    23 

    24 #include <e32std.h>

    25 

    26 // constants

    27 const TUint KGlxDefaultVisibleItemsGranularity = 15;

    28 const TUint KGlxQHDVisibleItemsGranularity = 20;

    29 const TUint KGlxVGAVisibleItemsGranularity = 21;

    30 

    31 /**

    32  *  GlxListUtils

    33  *

    34  *  @author Aki Vanhatalo

    35  *

    36  * @internal reviewed 16/07/2007 by Kimmo Hoikka

    37  */

    38 class GlxListUtils

    39 	{

    40 public:

    41 	/** 

    42 	 * Normalises index in a loop into the range. If aIndex is outside the 

    43 	 * list indexes (i.e., 0 and list size), this function "loops the list"

    44 	 * to return the correct index normalised to inside the list.

    45 	 * This function must not be called if the list is empty.

    46      * @param aIndex Index to normalise

    47      * @param aListLength Length of the list

    48 	 */

    49 	static TInt NormalizedIndex( TInt aIndex, TInt aListLength );

    50 

    51     /**

    52      * Returns Visible items granularity based on feature 

    53      * layout (i.e., qHD, VGA)  

    54      * @return TInt visible items granularity / count

    55      */

    56 	static TInt VisibleItemsGranularityL();

    57 	};

    58 

    59 #endif // __GLXLISTUTILS_H__

    60