1 /*

     2 * Copyright (c) 2007-2008 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:    Slideshow specific thumbnail context

    15  *

    16 */

    17 

    18 

    19 

    20 

    21 // INCLUDES

    22 #include "shwthumbnailcontext.h"

    23 

    24 #include <glxthumbnailinfo.h>

    25 #include <glxthumbnailattributeinfo.h>

    26 #include <glxerrormanager.h>

    27 #include <mglxmedialist.h>

    28 

    29 #include <glxlog.h>

    30 #include <glxtracer.h>

    31 

    32 // DEPENDENCIES

    33 

    34 // -----------------------------------------------------------------------------

    35 // Constructor.

    36 // -----------------------------------------------------------------------------

    37 inline CShwThumbnailContext::CShwThumbnailContext( 

    38     TInt aIndex, TSize aSize ) : iSize(aSize), iCurrentIndex( aIndex )

    39     {

    40     }

    41 

    42 // -----------------------------------------------------------------------------

    43 // NewLC.

    44 // -----------------------------------------------------------------------------

    45 CShwThumbnailContext* CShwThumbnailContext::NewLC( TInt aIndex, TSize aSize )

    46     {

    47     TRACER("CShwThumbnailContext::NewLC");

    48     GLX_LOG_INFO1( "CShwThumbnailContext::NewL, aIndex=%d", aIndex );

    49     CShwThumbnailContext* self =

    50         new (ELeave) CShwThumbnailContext( aIndex, aSize );

    51     CleanupStack::PushL( self );

    52     self->ConstructL();

    53     return self;

    54     }

    55 

    56 // -----------------------------------------------------------------------------

    57 // ConstructL.

    58 // -----------------------------------------------------------------------------

    59 void CShwThumbnailContext::ConstructL()

    60     {

    61     TRACER("CShwThumbnailContext::ConstructL");

    62     GLX_LOG_INFO("CShwThumbnailContext::ConstructL");

    63     // Create the high quality / slower context

    64     iHighQualityContext = CGlxThumbnailContext::NewL( this );

    65     // Call both setdefault and add?

    66     iHighQualityContext->SetDefaultSpec( iSize.iWidth, iSize.iHeight );

    67     iHighQualityContext->AddSpecForItemL( iSize.iWidth, iSize.iHeight,

    68         iCurrentIndex );

    69     // we want to only load high quality with this context

    70     iHighQualityContext->SetHighQualityOnly( ETrue );

    71     }

    72 

    73 // -----------------------------------------------------------------------------

    74 // Destructor.

    75 // -----------------------------------------------------------------------------

    76 CShwThumbnailContext::~CShwThumbnailContext()

    77     {

    78     TRACER("CShwThumbnailContext::~CShwThumbnailContext");

    79     GLX_LOG_INFO( "CShwThumbnailContext::~CShwThumbnailContext" );

    80     delete iHighQualityContext;

    81     }

    82 

    83 // -----------------------------------------------------------------------------

    84 // SetToFirst.

    85 // -----------------------------------------------------------------------------

    86 void CShwThumbnailContext::SetToFirst( const MGlxMediaList* /*aList*/ )

    87     {

    88     TRACER("CShwThumbnailContext::SetToFirst");

    89     GLX_LOG_INFO( "CShwThumbnailContext::SetToFirst" );

    90     // reset iterator state

    91     iIterated = EFalse;

    92     }

    93 

    94 // -----------------------------------------------------------------------------

    95 // CShwThumbnailLoaderImpl::operator++.

    96 // -----------------------------------------------------------------------------

    97 TInt CShwThumbnailContext::operator++( TInt )

    98     {

    99     TRACER("CShwThumbnailContext::operator++");

   100     GLX_LOG_INFO( "CShwThumbnailContext::operator++" );

   101     // we want to load all the thumbnails our clients have requested 

   102     // notification on, nothing else

   103     // by default tell the thumbnail that we dont have any interesting indexes

   104     TInt wantedIndex = KErrNotFound;

   105     // check if we were asked already

   106     if( !iIterated )

   107         {

   108         // we want to load thumbnail for the specified index

   109         wantedIndex = iCurrentIndex;

   110         iIterated = ETrue;

   111         }

   112     // finally return the index that was wanted

   113     return wantedIndex;

   114     }

   115 

   116 // -----------------------------------------------------------------------------

   117 // InRange.

   118 // -----------------------------------------------------------------------------

   119 TBool CShwThumbnailContext::InRange( TInt aIndex ) const

   120     {

   121     TRACER("CShwThumbnailContext::InRange");

   122     GLX_LOG_INFO( "CShwThumbnailContext::InRange" );

   123     // if we got notifications

   124     if ( aIndex == iCurrentIndex )

   125         {

   126         // is in range so dont remove the item :)

   127         // cache removes thumbnails that are no longer in range

   128         return ETrue;

   129         }

   130     // not in our range

   131     return EFalse;

   132     }

   133 

   134 // -----------------------------------------------------------------------------

   135 // RequestCountL.

   136 // -----------------------------------------------------------------------------

   137 TInt CShwThumbnailContext::RequestCountL(const MGlxMediaList* aList) const

   138     {

   139     TRACER("CShwThumbnailContext::RequestCountL");

   140     GLX_LOG_INFO( "CShwThumbnailContext::RequestCountL" );

   141     return iHighQualityContext->RequestCountL( aList );

   142     }

   143 

   144 // -----------------------------------------------------------------------------

   145 // Index.

   146 // -----------------------------------------------------------------------------

   147 TInt CShwThumbnailContext::Index()

   148     {

   149     TRACER("CShwThumbnailContext::Index");

   150     GLX_LOG_INFO1( "CShwThumbnailContext::Index %d", iCurrentIndex );

   151     return iCurrentIndex;

   152     }

   153 

   154 // -----------------------------------------------------------------------------

   155 // Context.

   156 // -----------------------------------------------------------------------------

   157 MGlxFetchContext* CShwThumbnailContext::Context()

   158 	{

   159 	TRACER("CShwThumbnailContext::Context");

   160 	GLX_LOG_INFO( "CShwThumbnailContext::Context" );

   161 	return iHighQualityContext;

   162 	}