uiacceltk/hitchcock/coretoolkit/src/huigifanimationtexture.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Mon, 03 May 2010 13:22:43 +0300
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child 57 eaa079afe64c
permissions -rw-r--r--
Revision: 201015 Kit: 201018
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/*
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* Copyright (c) 2006-2007 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:   ?Description
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*
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*/
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#include <uiacceltk/huigifanimationtexture.h>
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#include <uiacceltk/HuiStatic.h>
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#include <driveinfo.h>
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CHuiGifAnimationTexture::TAnimationState SetFlag(TInt aValue, TInt aFlag)
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    {
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    return CHuiGifAnimationTexture::TAnimationState(aValue|aFlag);
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    }
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CHuiGifAnimationTexture::TAnimationState ClearFlag(TInt aValue, TInt aFlag)
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    {      
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    return CHuiGifAnimationTexture::TAnimationState(aValue^aFlag);
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    }
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EXPORT_C CHuiGifAnimationTexture* CHuiGifAnimationTexture::NewL(const TDesC& aFilename, 
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                                                                CHuiTextureManager& aManager,
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                                                                TInt aID,
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                                                                THuiTextureUploadFlags aFlags)
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    {
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    CHuiGifAnimationTexture* self = new(ELeave) CHuiGifAnimationTexture(aManager,aFlags, aID);
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    CleanupStack::PushL(self);
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    self->ConstructL(aFilename);
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    CleanupStack::Pop(); // self
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    return self;
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    }
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EXPORT_C void CHuiGifAnimationTexture::Start()
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    {
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    iAnimationState = SetFlag(TInt(iAnimationState), TInt(ERunning));        
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    if (iAnimationState&EStopped)
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        {
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        iAnimationState=ClearFlag(TInt(iAnimationState), TInt(EStopped));
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        }
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    if (iTexture)
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        {
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        iTexture->SetTextureChanged(ETrue);        
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        }
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    CHuiStatic::ContinueRefresh();
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    }
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EXPORT_C void CHuiGifAnimationTexture::Stop()
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    {
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    if (iAnimationState&ERunning)
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        {
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        iAnimationState=ClearFlag(TInt(iAnimationState), TInt(ERunning));
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        }
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    iAnimationState = SetFlag(TInt(iAnimationState), TInt(EStopped));
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    }
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EXPORT_C void CHuiGifAnimationTexture::EnableAnimation(TBool aEnable)
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    { 
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    if (aEnable)
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    	{
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    	iAnimationState = SetFlag(TInt(iAnimationState), TInt(EEnabled));	
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    	}
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    else 
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    	{
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    	iAnimationState = ClearFlag(TInt(iAnimationState), TInt(EEnabled));
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    	}
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    CHuiStatic::ContinueRefresh();
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    }
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EXPORT_C TInt CHuiGifAnimationTexture::Id() 
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    {
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    return iId;
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    }
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void CHuiGifAnimationTexture::AdvanceTime(TReal32 aElapsedTime) __SOFTFP
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    {
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    if (((iAnimationState & EInitializing) || (iFrameInterval == -1)) || (iAnimationState & EStopped)
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    	|| !(iAnimationState & EEnabled))
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        {
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        return;
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        }
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    iElapsedTime+=aElapsedTime;
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    TReal32 time = (TReal(iFrameInterval))/1000000.0f;
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    if (iElapsedTime >= time)
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        {
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        const TInt loadingTextureId = iCurrentTexture ? iTextureId1 : iTextureId2;
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        if ( !iManager.IsLoaded( loadingTextureId ) )
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            {
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            return;
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            }
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        iCurrentTexture^=1;
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        if (iCurrentTexture)
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            // use texture 2
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            {
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            iTexture = iTexture2;
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            TInt nextToLoad = iTexture2->iFrameNumber+1;
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            if (nextToLoad >= iFrameCount)
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   117
                {
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                nextToLoad = 0;
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                }
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            delete iTexture1;
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            iTexture1 = 0;   
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            TRAP_IGNORE(iTexture1 = &iManager.LoadTextureL(*iFilename,EHuiTextureUploadFlagDefault, iTextureId1, nextToLoad))
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   125
            }
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        else
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            // use texture 1    
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            {
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            iTexture = iTexture1;
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            TInt nextToLoad = iTexture1->iFrameNumber+1;
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            if (nextToLoad >= iFrameCount)
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                {
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                nextToLoad = 0;
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                }
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            delete iTexture2;
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            iTexture2 = 0;   
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   138
 
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            TRAP_IGNORE(iTexture2 = &iManager.LoadTextureL(*iFilename,EHuiTextureUploadFlagDefault, iTextureId2, nextToLoad))
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   140
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            }
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        iElapsedTime = 0.0f;
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   143
        
19
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   144
        }
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   145
    // not enough time was elapsed,
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   146
    // if the animation is not stopped
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   147
    // request continuerefresh in order
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   148
    // not to go to sleep
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   149
    else 
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   150
        {
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        iTexture->SetTextureChanged(ETrue);            
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        CHuiStatic::ContinueRefresh();
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        }
0
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    }
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   155
    
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   156
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void CHuiGifAnimationTexture::TextureLoadingCompleted(CHuiTexture& aTexture,
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                             TInt aTextureId,
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   159
                             TInt /*aErrorCode*/)
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   160
    {
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   161
    if ((iAnimationState & EInitializing) && aTexture.iFrameCount > 1 && aTextureId == iTextureId1)
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   162
        {
13
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   163
        delete iTexture;
0
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        iTexture = iTexture1;
13
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        delete iTexture2;
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   166
        iTexture2 = NULL;
0
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        TRAP_IGNORE(iTexture2 = &iManager.LoadTextureL(*iFilename,EHuiTextureUploadFlagDefault, iTextureId2, 1))
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        iFrameInterval = aTexture.iFrameInterval;
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        iFrameCount = aTexture.iFrameCount;
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        return;
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   171
        }
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    if ((iAnimationState & EInitializing) && aTextureId == iTextureId2)
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   173
        {
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        iAnimationState = SetFlag(TInt(iAnimationState),TInt(ERunning));
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        iAnimationState = ClearFlag(TInt(iAnimationState), TInt(EInitializing));
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   176
        }
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   177
    }
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   178
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   179
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   180
CHuiGifAnimationTexture::CHuiGifAnimationTexture(CHuiTextureManager& aManager,THuiTextureUploadFlags aFlags,TInt aId) : 
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   181
    CHuiAnimatedTexture(aManager),
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   182
    iTexture2(NULL),
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   183
    iCurrentTexture(0),
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   184
    iAnimationState(EInitializing),
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   185
    iFrameInterval(-1),
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   186
    iFrameCount(0),
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   187
    iFlags(aFlags),
14
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   188
    iId(aId),
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   189
    iOriginalFileInUse(EFalse)
0
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   190
    {
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   191
    }
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   192
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   193
void CHuiGifAnimationTexture::ConstructL(const TDesC& aFilename)
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   194
    {
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   195
    CHuiAnimatedTexture::BaseConstructL();
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   196
    iTextureId1 = CHuiStatic::GenerateId();
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   197
    iTextureId2 = CHuiStatic::GenerateId();
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diff changeset
   198
    
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   199
    // To load GIF animation, you should load textures in sequence - 
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   200
    // previous state is needed. Thus, this group indicates that
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diff changeset
   201
    // previous state can be shared between these textures.
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   202
    RArray<TInt> groupIds;
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   203
    CleanupClosePushL( groupIds );
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   204
    groupIds.AppendL( iTextureId1 );
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   205
    groupIds.AppendL( iTextureId2 );
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   206
    iAnimatedTextureGroupId = iManager.AddAnimatedTextureGroupL( groupIds );
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   207
    CleanupStack::PopAndDestroy( &groupIds );
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diff changeset
   208
    
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   209
	// Alf locks the file while drawing textures hence preventing any other operations on this file
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   210
	// so copy file to RAM and use that instead.
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   211
    TParse parse;
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   212
    parse.Set(aFilename, NULL, NULL);
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   213
    parse.NameAndExt();
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diff changeset
   214
    
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   215
    TChar drive;
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   216
    User::LeaveIfError( DriveInfo::GetDefaultDrive(DriveInfo::EDefaultRam, drive ) );
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   217
        
14
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   218
    // 32 extra for textureid and 4 for "temp"
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   219
    iFilename = HBufC::NewL(parse.NameAndExt().Size() + 4 + 32+ 4);
0
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   220
    TPtr ptr = iFilename->Des();
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diff changeset
   221
    
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   222
    ptr.Append(drive);
14
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   223
    ptr.Append(_L(":\\temp"));
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   224
    // with the texture id:s the
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   225
    // name should be "unique"
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   226
    ptr.AppendNum(iTextureId1);
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diff changeset
   227
    ptr.AppendNum(iTextureId2);
0
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    ptr.Append(parse.NameAndExt());
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    RFs fs;
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    User::LeaveIfError(fs.Connect());
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    CFileMan* fileman = CFileMan::NewL(fs);
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    CleanupStack::PushL(fileman);
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    TInt err = fileman->Copy(aFilename, iFilename->Des());
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    CleanupStack::PopAndDestroy();
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    if(err != KErrNone)
14
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    	{
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	    iOriginalFileInUse = ETrue;
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	    delete iFilename;    
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        iFilename = aFilename.AllocL();
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	    }
0
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    iTexture1 = &iManager.LoadTextureL(
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        *iFilename,EHuiTextureUploadFlagDefault, iTextureId1, 0);     
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    iManager.iLoadObservers.AppendL(*this);
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   	iAnimationState = SetFlag(TInt(iAnimationState), TInt(EEnabled));	
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    }
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EXPORT_C CHuiGifAnimationTexture::~CHuiGifAnimationTexture()
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    {
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    if ( iAnimatedTextureGroupId )
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        {
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        iManager.RemoveAnimatedTextureGroup( iAnimatedTextureGroupId );
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        }
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    iManager.iLoadObservers.RemoveIfFound(*this);
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    delete iTexture1;
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    delete iTexture2;
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    iTexture = 0;    
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14
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    // Don't delete the file if the original
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    // file was in use instead of the RAM copy
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    if (!iOriginalFileInUse)
0
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        {
14
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        RFs fs;
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        TInt err = fs.Connect();
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        if(err == KErrNone)    
0
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            {
14
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            CFileMan* fileman = 0;
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            TRAP(err, fileman = CFileMan::NewL(fs));
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            if(err == KErrNone)
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                {
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                fileman->Delete(iFilename->Des());
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                }
0
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            }
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        }
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    delete iFilename;
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    }
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