mpxplugins/viewplugins/views/collectionviewhg/src/mpxcollectionviewhgtnloader.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 17 Dec 2009 08:45:05 +0200
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/*
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* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:  Thumbnail loader implementation
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*
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*/
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#include <thumbnaildata.h>
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#include <AknIconUtils.h>
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#include "mpxcollectionviewhgtnloader.h"
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#include "mpxlog.h"
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_LIT( KMPXAlbumMimeType, "audio/mpeg3" );
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// -----------------------------------------------------------------------------
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// CODEScrollerTNLoader::NewL()
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// -----------------------------------------------------------------------------
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//
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CMpxTNLoader* CMpxTNLoader::NewL (
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        MMpxTNLoaderObserver& aObserver, TThumbnailSize aSize )
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    {
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    CMpxTNLoader* self = new (ELeave) CMpxTNLoader(aObserver, aSize );
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    CleanupStack::PushL(self);
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    self->ConstructL();
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    CleanupStack::Pop(self);
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    return self;
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    }
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// -----------------------------------------------------------------------------
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// CMpxTNLoader:~CMpxTNLoader()
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// -----------------------------------------------------------------------------
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//
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CMpxTNLoader::~CMpxTNLoader ( )
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    {
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    // cancel outstanding requests
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    if(iTnEngine)
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        {
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//        CancelAll();
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        }
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    iLoading.ResetAndDestroy();
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    delete iTnEngine;
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    if( iAsyncCallBack )
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        iAsyncCallBack->Cancel();
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    delete iAsyncCallBack;
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    }
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TInt CMpxTNLoader::LoadThumbnail( TAny* aSelf )
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    {
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    CMpxTNLoader* self = (CMpxTNLoader*)aSelf;
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    self->LoadNextTN();
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    return KErrNone;
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    }
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void CMpxTNLoader::LoadNextTN()
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    {
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    if( iLoading.Count() > 0 )
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        {
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        TInt index = iLoading[0]->iIndex;
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        if( index >= 0 && iLoading[0]->iId == 0)
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            {
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            CThumbnailObjectSource* source = CThumbnailObjectSource::NewLC(iLoading[0]->iFileName, KMPXAlbumMimeType);
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            TRAPD(err, iLoading[0]->iId = iTnEngine->GetThumbnailL( *source, NULL, 0 ); )
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        	MPX_DEBUG4( "GetThumbnailL: %d [%d,%d]", err, index, iLoading[0]->iId);
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			CleanupStack::PopAndDestroy(source);
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            }
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        }
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    }
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// -----------------------------------------------------------------------------
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// CMpxTNLoader::ThumbnailPreviewReady()
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// -----------------------------------------------------------------------------
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//
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void CMpxTNLoader::ThumbnailPreviewReady (MThumbnailData& /*aThumbnail*/,
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        TThumbnailRequestId /*aId*/ )
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    {
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    // Previews not currently used
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    }
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// -----------------------------------------------------------------------------
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// CMpxTNLoader::ThumbnailReady()
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// -----------------------------------------------------------------------------
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//
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void CMpxTNLoader::ThumbnailReady (TInt aError,
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        MThumbnailData& aThumbnail, TThumbnailRequestId aId )
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    {
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    TInt index = FindLoadingById(aId, ETrue);
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	MPX_DEBUG4( "ThumbnailReady: %d [%d,%d]", aError, index, aId );
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    if( index != KErrNotFound )
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        {
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        CFbsBitmap* bitmap = (aError == KErrNone ? aThumbnail.DetachBitmap() : NULL);
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        TRAP_IGNORE(iObserver.TNReadyL(aError, bitmap, NULL, index));
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        if( iLoading.Count() > 0 )
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            {
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            if(!iAsyncCallBack->IsActive())
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                iAsyncCallBack->CallBack();
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            }
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parents:
diff changeset
   115
        }
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parents:
diff changeset
   116
    }
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parents:
diff changeset
   117
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parents:
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   118
// -----------------------------------------------------------------------------
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parents:
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   119
// CMpxTNLoader::CMpxTNLoader()
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   120
// -----------------------------------------------------------------------------
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parents:
diff changeset
   121
//
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parents:
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   122
CMpxTNLoader::CMpxTNLoader (MMpxTNLoaderObserver& aObserver, TThumbnailSize aSize )
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   123
: iObserver( aObserver ), iSize(aSize)
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parents:
diff changeset
   124
    {
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parents:
diff changeset
   125
ff3acec5bc43 Revision: 200949
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parents:
diff changeset
   126
    }
ff3acec5bc43 Revision: 200949
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parents:
diff changeset
   127
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parents:
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   128
// -----------------------------------------------------------------------------
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   129
// CMpxTNLoader::ConstructL()
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parents:
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   130
// -----------------------------------------------------------------------------
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parents:
diff changeset
   131
//
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   132
void CMpxTNLoader::ConstructL ()
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parents:
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   133
    {
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   134
    iTnEngine = CThumbnailManager::NewL( *this );
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parents:
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   135
    iTnEngine->SetFlagsL( CThumbnailManager::EDefaultFlags );
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parents:
diff changeset
   136
    iTnEngine->SetQualityPreferenceL( CThumbnailManager::EOptimizeForQuality );
ff3acec5bc43 Revision: 200949
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parents:
diff changeset
   137
    iTnEngine->SetThumbnailSizeL( iSize );
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   138
    TCallBack callback(CMpxTNLoader::LoadThumbnail, this);
ff3acec5bc43 Revision: 200949
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parents:
diff changeset
   139
    iAsyncCallBack = new (ELeave) CAsyncCallBack( CActive::EPriorityStandard );
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   140
    iAsyncCallBack->Set(callback);
ff3acec5bc43 Revision: 200949
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parents:
diff changeset
   141
    }
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   142
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   143
// -----------------------------------------------------------------------------
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   144
// CMpxTNLoader::FindLoading()
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parents:
diff changeset
   145
// -----------------------------------------------------------------------------
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   146
//
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   147
TInt CMpxTNLoader::FindLoadingById(TThumbnailRequestId aId, TBool aRemove)
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   148
    {
ff3acec5bc43 Revision: 200949
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   149
    TInt index = KErrNotFound;
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   150
    for(TInt i = 0; i < iLoading.Count(); ++i)
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   151
        {
ff3acec5bc43 Revision: 200949
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parents:
diff changeset
   152
        if(iLoading[i]->iId == aId)
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   153
            {
ff3acec5bc43 Revision: 200949
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parents:
diff changeset
   154
            index = iLoading[i]->iIndex;
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   155
            if(aRemove)
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   156
                {
ff3acec5bc43 Revision: 200949
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parents:
diff changeset
   157
                delete iLoading[i];
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   158
                iLoading.Remove(i);
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   159
                }
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   160
            break;
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   161
            }
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   162
        }
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   163
    return index;
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   164
    }
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   165
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   166
// -----------------------------------------------------------------------------
ff3acec5bc43 Revision: 200949
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parents:
diff changeset
   167
// CMpxTNLoader::FindLoading()
ff3acec5bc43 Revision: 200949
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parents:
diff changeset
   168
// -----------------------------------------------------------------------------
ff3acec5bc43 Revision: 200949
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parents:
diff changeset
   169
//
ff3acec5bc43 Revision: 200949
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parents:
diff changeset
   170
TInt CMpxTNLoader::FindLoadingByIndex(TInt aIndex, TBool aRemove)
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   171
    {
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   172
    TInt index = KErrNotFound;
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   173
    for(TInt i = 0; i < iLoading.Count(); ++i)
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   174
        {
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   175
        if(iLoading[i]->iIndex == aIndex)
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   176
            {
ff3acec5bc43 Revision: 200949
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parents:
diff changeset
   177
            index = i;
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   178
            if(aRemove)
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   179
                {
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   180
                delete iLoading[i];
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   181
                iLoading.Remove(i);
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   182
                }
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   183
            break;
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   184
            }
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   185
        }
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   186
    return index;
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   187
    }
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   188
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   189
// -----------------------------------------------------------------------------
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   190
// CMpxTNLoader::LoadThumbL()
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   191
// -----------------------------------------------------------------------------
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   192
//
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   193
void CMpxTNLoader::LoadThumbL( TInt aIndex, const TDesC& aFileName )
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   194
    {
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   195
    if( FindLoadingByIndex(aIndex) == KErrNotFound )
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   196
        {
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   197
        iLoading.Append( new (ELeave) TLoadingTN( 0, aIndex, aFileName ) );
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   198
        if( !iAsyncCallBack->IsActive() )
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   199
            iAsyncCallBack->CallBack();
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   200
        }
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   201
    }
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   202
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   203
// -----------------------------------------------------------------------------
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   204
// CMpxTNLoader::CancelThumb()
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   205
// -----------------------------------------------------------------------------
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   206
//
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   207
void CMpxTNLoader::CancelThumb( TInt aIndex )
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   208
    {
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   209
    TInt loadingIndex = FindLoadingByIndex( aIndex );
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   210
    if(loadingIndex != KErrNotFound)
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   211
        {
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   212
        // Current thumbnail manager has bugs in thumbnail request cancelation.
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   213
        // There is a fix coming in near future but until that we cannot cancel requests
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   214
        // since after that we dont get any thumbnails from server.
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   215
//        if( iLoading[loadingIndex]->iId != 0 )
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   216
//            {
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   217
//            RDebug::Print(_L("!!CANCEL REQUEST!!"));
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   218
//            iTnEngine->CancelRequest( iLoading[loadingIndex]->iId );
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   219
//            }
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   220
        delete iLoading[loadingIndex];
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   221
        iLoading.Remove(loadingIndex);
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   222
        }
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   223
    }
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   224
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   225
void CMpxTNLoader::CancelAll()
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   226
    {
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   227
    iLoading.ResetAndDestroy();
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   228
    return;
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   229
    // Current thumbnail manager has bugs in thumbnail request cancelation.
ff3acec5bc43 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   230
    // There is a fix coming in near future but until that we cannot cancel requests
ff3acec5bc43 Revision: 200949
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    // since after that we dont get any thumbnails from server.
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    while ( iLoading.Count() > 0 )
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        {
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        if( iLoading[0]->iId != 0 )
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            iTnEngine->CancelRequest( iLoading[0]->iId );
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        delete iLoading[0];
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        iLoading.Remove(0);
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        }
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    }
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void CMpxTNLoader::SetSizeL( TThumbnailSize aSize )
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    {
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    iTnEngine->SetThumbnailSizeL( aSize );
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    }