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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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if( iPauseTimer )
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iPauseTimer->Cancel();
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delete iPauseTimer;
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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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MPX_TRAPD( err, self->LoadNextTNL() );
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return err;
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}
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void CMpxTNLoader::LoadNextTNL()
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{
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if( iPaused )
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return;
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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, 1 ); )
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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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}
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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 (MMpxTNLoaderObserver& aObserver, TThumbnailSize aSize )
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: iObserver( aObserver ), iSize(aSize)
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{
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}
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// -----------------------------------------------------------------------------
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// CMpxTNLoader::ConstructL()
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// -----------------------------------------------------------------------------
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//
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void CMpxTNLoader::ConstructL ()
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{
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iTnEngine = CThumbnailManager::NewL( *this );
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iTnEngine->SetFlagsL( CThumbnailManager::EDefaultFlags );
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iTnEngine->SetQualityPreferenceL( CThumbnailManager::EOptimizeForQuality );
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iTnEngine->SetThumbnailSizeL( iSize );
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TCallBack callback(CMpxTNLoader::LoadThumbnail, this);
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iAsyncCallBack = new (ELeave) CAsyncCallBack( CActive::EPriorityHigh );
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iAsyncCallBack->Set(callback);
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iPauseTimer = CPeriodic::NewL( CActive::EPriorityStandard );
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}
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// -----------------------------------------------------------------------------
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// CMpxTNLoader::FindLoading()
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// -----------------------------------------------------------------------------
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//
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TInt CMpxTNLoader::FindLoadingById(TThumbnailRequestId aId, TBool aRemove)
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{
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TInt index = KErrNotFound;
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for(TInt i = 0; i < iLoading.Count(); ++i)
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{
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if(iLoading[i]->iId == aId)
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{
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index = iLoading[i]->iIndex;
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if(aRemove)
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{
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delete iLoading[i];
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iLoading.Remove(i);
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}
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break;
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}
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}
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return index;
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}
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// -----------------------------------------------------------------------------
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// CMpxTNLoader::FindLoading()
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// -----------------------------------------------------------------------------
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//
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TInt CMpxTNLoader::FindLoadingByIndex(TInt aIndex, TBool aRemove)
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{
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TInt index = KErrNotFound;
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for(TInt i = 0; i < iLoading.Count(); ++i)
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{
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if(iLoading[i]->iIndex == aIndex)
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{
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index = i;
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if(aRemove)
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{
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delete iLoading[i];
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iLoading.Remove(i);
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}
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break;
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}
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}
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return index;
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}
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// -----------------------------------------------------------------------------
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// CMpxTNLoader::LoadThumbL()
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// -----------------------------------------------------------------------------
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//
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void CMpxTNLoader::LoadThumbL( TInt aIndex, const TDesC& aFileName )
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{
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if( FindLoadingByIndex(aIndex) == KErrNotFound )
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{
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iLoading.Append( new (ELeave) TLoadingTN( 0, aIndex, aFileName ) );
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if( !iAsyncCallBack->IsActive() )
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iAsyncCallBack->CallBack();
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}
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}
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// -----------------------------------------------------------------------------
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// CMpxTNLoader::CancelThumb()
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// -----------------------------------------------------------------------------
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//
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void CMpxTNLoader::CancelThumb( TInt aIndex )
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{
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TInt loadingIndex = FindLoadingByIndex( aIndex );
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if(loadingIndex != KErrNotFound)
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{
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if( iLoading[loadingIndex]->iId != 0 )
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{
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MPX_DEBUG2( "Cancel Thumb Request: %d", aIndex );
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iTnEngine->CancelRequest( iLoading[loadingIndex]->iId );
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}
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delete iLoading[loadingIndex];
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iLoading.Remove(loadingIndex);
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}
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}
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void CMpxTNLoader::CancelAll()
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{
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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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}
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void CMpxTNLoader::Pause(TTimeIntervalMicroSeconds32 aDelay)
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{
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iAsyncCallBack->Cancel();
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iPaused = ETrue;
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iPauseTimer->Cancel();
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iPauseTimer->Start(
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aDelay, aDelay,
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TCallBack(ResumeCallback, this));
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}
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void CMpxTNLoader::Resume()
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{
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iPaused = EFalse;
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if( !iAsyncCallBack->IsActive() )
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iAsyncCallBack->CallBack();
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iPauseTimer->Cancel();
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}
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TInt CMpxTNLoader::ResumeCallback(TAny* aPtr)
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{
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CMpxTNLoader* self = (CMpxTNLoader*)aPtr;
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if( self )
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{
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self->Resume();
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}
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return KErrNone;
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}
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