1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/graphics/windowing/windowserver/nonnga/remotegc/BitmapCache.cpp	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,74 @@
     1.4 +// Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).
     1.5 +// All rights reserved.
     1.6 +// This component and the accompanying materials are made available
     1.7 +// under the terms of "Eclipse Public License v1.0"
     1.8 +// which accompanies this distribution, and is available
     1.9 +// at the URL "http://www.eclipse.org/legal/epl-v10.html".
    1.10 +//
    1.11 +// Initial Contributors:
    1.12 +// Nokia Corporation - initial contribution.
    1.13 +//
    1.14 +// Contributors:
    1.15 +//
    1.16 +// Description:
    1.17 +//
    1.18 +
    1.19 +#include "BitmapCache.h"
    1.20 +
    1.21 +CBitmapCache::CBitmapCache() : CCacheBase()
    1.22 +	{
    1.23 +	
    1.24 +	}
    1.25 +
    1.26 +CBitmapCache::~CBitmapCache()
    1.27 +	{
    1.28 +	
    1.29 +	}
    1.30 +
    1.31 +/**
    1.32 +Enables the use of a cached bitmap with a specified handle.
    1.33 +If no bitmap with this handle is cached, the bitmap is created and cached.
    1.34 +
    1.35 +@return KErrNone if no problem occured, otherwise a systemwide error.
    1.36 +*/
    1.37 +TInt CBitmapCache::UseL(TInt aHandle)
    1.38 +	{
    1.39 +	TCacheEntry entry(aHandle);
    1.40 +	TInt index = iCachedItems.FindInUnsignedKeyOrder(entry);
    1.41 +	if(index != KErrNotFound)
    1.42 +		{
    1.43 +		iCachedItems[index].iIsUsed = ETrue;
    1.44 +		return KErrNone;	
    1.45 +		}
    1.46 +		
    1.47 +	entry.iCachedItem = new (ELeave) CFbsBitmap;	
    1.48 +	TInt err = static_cast<CFbsBitmap*>(entry.iCachedItem)->Duplicate(aHandle);
    1.49 +	if(err)
    1.50 +		{
    1.51 +		delete entry.iCachedItem;
    1.52 +		return err;
    1.53 +		}
    1.54 +	
    1.55 +	entry.iIsUsed = ETrue;		
    1.56 +	CleanupStack::PushL(entry.iCachedItem);
    1.57 +	iCachedItems.InsertInUnsignedKeyOrderL(entry);
    1.58 +	CleanupStack::Pop(entry.iCachedItem);	
    1.59 +	return KErrNone;
    1.60 +	}
    1.61 +
    1.62 +/**
    1.63 +Returns a bitmap from the cache corresponding to a specific handle.
    1.64 +
    1.65 +@param aHandle A handle to match against a bitmap in the cache.
    1.66 +@return The bitmap that matches the handle provided as a parameter.
    1.67 +*/
    1.68 +const CFbsBitmap* CBitmapCache::Resolve(TInt aHandle)
    1.69 +	{	
    1.70 +	const CBase* item = CCacheBase::Resolve(aHandle);
    1.71 +	if(item != NULL)
    1.72 +		return static_cast<const CFbsBitmap*>(item);
    1.73 +	else
    1.74 +		return NULL;
    1.75 +	}
    1.76 +	
    1.77 +