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:    Utility for thumbnail tasks handling files

    15 *

    16 */

    17 

    18 

    19 

    20 

    21 /**

    22  * @internal reviewed 30/07/2007 by Simon Brooks

    23  */

    24 

    25 #ifndef GLXTNFILEUTILITY_H

    26 #define GLXTNFILEUTILITY_H

    27 

    28 #include <e32base.h>

    29 #include <f32file.h>

    30 

    31 /**

    32  * Utility for thumbnail tasks handling files.

    33  *

    34  * @author Dan Rhodes

    35  * @ingroup glx_thumbnail_creator

    36  */

    37 NONSHARABLE_CLASS(CGlxtnFileUtility) : public CBase

    38     {

    39 public:  // Constructors and destructor

    40 

    41     /**

    42     * Two-phased constructor.

    43     */

    44     static CGlxtnFileUtility* NewL();

    45 

    46     /**

    47     * Destructor.

    48     */

    49     ~CGlxtnFileUtility();

    50 

    51     /**

    52     * Provide file server session for opening images from files.

    53     */

    54     RFs& FsSession();

    55 

    56     /**

    57     * Test whether a file is on the bad file list.  If so this method leaves.

    58     * If not the bad file marker is set to the filename, so that if a panic

    59     * occurs the file will be added to the bad file list.

    60     * @param aFilename Path of file for which a thumbnail is to be generated.

    61     */

    62     void CheckBadFileListL(const TDesC& aFilename);

    63 

    64     /**

    65     * Clear the bad file marker.  Called when processing a file is complete (no

    66     * panic occurred).

    67     */

    68     void ClearBadFileMarker();

    69 

    70     /**

    71     * Test whether a generated thumbnail should be stored in persistent storage.

    72     * @param aSize Requested size of thumbnail.

    73     */

    74     TBool IsPersistentSize(const TSize& aSize);

    75 

    76 private:

    77 

    78     /**

    79     * C++ default constructor.

    80     */

    81     CGlxtnFileUtility();

    82 

    83     /**

    84     * By default Symbian 2nd phase constructor is private.

    85     */

    86     void ConstructL();

    87 

    88     /**

    89     * Read bad file list from file and add file from marker, if present.

    90     */

    91     void ReadBadFileListL();

    92     /**

    93     * Write bad file list to file.

    94     */

    95     void WriteBadFileListL();

    96 	/**

    97     * calculates Grid Icon Size for landscape orientation and Fullscreen

    98     * Image size depending on Layout defines.

    99     */

   100 	void LayoutSpecificDataL();

   101 	

   102 private:

   103     /** File server session for opening images from files */

   104     RFs iFs;

   105     /** Directory in which to store bad file list and marker */

   106     TFileName iBadFileDir;

   107     /** Filenames of media files which cause panics when decoding */

   108     RPointerArray<HBufC> iBadFileArray;

   109     /** Persistent thumbnail size classes */

   110     RArray<TSize> iPersistentSizeClasses;

   111     };

   112 

   113 #endif  // GLXTNFILEUTILITY_H