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:    Common utility for thumbnail attributes

    15 *

    16 */

    17 

    18 

    19 

    20 

    21 #ifndef __GLXTHUMBNAILUTILITY_H__

    22 #define __GLXTHUMBNAILUTILITY_H__

    23 

    24 #include <mpxattribute.h>

    25 

    26 // Forward declarations

    27 class CGlxMedia;

    28 

    29 /**

    30  * Common utility for thumbnail attributes

    31  *

    32  * @author Dan Rhodes

    33  * @ingroup glx_media_lists

    34  */

    35 NONSHARABLE_CLASS( GlxThumbnailUtility )

    36     {

    37 public:

    38     /**

    39      * Find the closest available thumbnail to a given size for a media item.

    40      * @param aDesiredSize Size of thumbnail required

    41      * @param aMedia Media item whose attributes are to be searched

    42      * @param aDrmValid If false, the function will not return a thumbnail

    43                 bigger than the requested size

    44      * @return TInt Index of closest attribute, or KErrNotFound if none found

    45      */

    46     IMPORT_C static TInt ClosestThumbnail( const TSize& aDesiredSize,

    47                                 const CGlxMedia& aMedia, TBool aDrmValid );

    48 	 

    49 	 /**

    50      * Check from the attributes if there is a full thumbnail available .

    51      * @param aAttr attribute to check  

    52      * @return ETrue if full thumbnail found, else EFalse

    53      */

    54  	 IMPORT_C static TBool IsFullThumbnail(const TMPXAttribute& aAttr);

    55 

    56 private:

    57     /**

    58      * Determine if this attribute should be preferred to that already selected

    59      * @param aThisDimen dimension describing this attribute

    60      * @param aSelectedDimen dimension describing the attribute already selected

    61      * @param aReqDimen the required dimension

    62      * @param aQuality the quality of the bitmap of this attribute

    63      * @param aSelectedQuality the quality of the bitmap of the attribute already selected

    64      * @param aDrmValid EFalse for item which has invalid DRM rights

    65      * @return ETrue if this attribute is preferred, else EFalse

    66      */

    67     static TBool PreferThisAttribute(

    68                 TInt aThisDimen, TInt aSelectedDimen, TInt aReqDimen,

    69                 TInt aThisQuality, TInt aSelectedQuality, TBool aDrmValid );

    70     };

    71 

    72 #endif // __GLXTHUMBNAILUTILITY_H__

    73