sl@0: // Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: //
sl@0: 
sl@0: #include "DrawableCache.h"
sl@0: #include <graphics/wsdrawablesourceprovider.h>
sl@0: #include <graphics/wsdrawresource.h>
sl@0: #include "graphicsresourcewrapper.h"
sl@0: 
sl@0: 
sl@0: const TAny* CDrawableCacheBase::Resolve(const TSgDrawableId& aDrawableId, TInt aScreenNumber) const
sl@0: 	{
sl@0: 	TCacheEntry entry(aDrawableId, aScreenNumber);
sl@0: 	TInt index = iCachedItems.FindInOrder(entry, TLinearOrder<TCacheEntry>(CDrawableCacheBase::Compare));
sl@0: 	if (index != KErrNotFound)
sl@0: 		{
sl@0: 		return iCachedItems[index].iCachedItem;
sl@0: 		}
sl@0: 	return NULL;
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: Compare two cache entries by drawable ID and screen number.
sl@0: 
sl@0: @return zero, if the two objects are equal, a negative value, if the first entry is less 
sl@0: than the second, a positive value, if the first entry is greater than the second.
sl@0: */
sl@0: TInt CDrawableCacheBase::Compare(const TCacheEntry &aFirstEntry, const TCacheEntry &aSecondEntry)
sl@0: 	{
sl@0: 	TInt delta = Mem::Compare(reinterpret_cast<const TUint8*>(&aFirstEntry.iDrawableId), sizeof(TSgDrawableId),
sl@0: 	                          reinterpret_cast<const TUint8*>(&aSecondEntry.iDrawableId), sizeof(TSgDrawableId));
sl@0: 	if (delta != 0)
sl@0: 		{
sl@0: 		return delta;
sl@0: 		}
sl@0: 	return aFirstEntry.iScreenNumber - aSecondEntry.iScreenNumber;
sl@0: 	}
sl@0: 
sl@0: 
sl@0: CWindowDrawableCache::CWindowDrawableCache(RWsSession& aSession)
sl@0: 	: iWsSession(aSession)
sl@0: 	{}
sl@0: 
sl@0: CWindowDrawableCache::~CWindowDrawableCache()
sl@0: 	{
sl@0: 	delete iGraphicsResource;
sl@0: 	delete iGrwFactory;
sl@0: 	for (TInt ii=0;ii<iCachedItems.Count();++ii)
sl@0: 		{
sl@0: 		RWsDrawableSource* cachedItem=static_cast<RWsDrawableSource*>(iCachedItems[ii].iCachedItem);
sl@0: 		cachedItem->Close();
sl@0: 		delete cachedItem;
sl@0: 		}
sl@0: 	iCachedItems.Close();
sl@0: 	}
sl@0: 
sl@0: struct TCloseDrawableData
sl@0: 	{
sl@0: public:
sl@0: 	TCloseDrawableData(CGraphicsResourceWrapper& aGraphicsResource, RSgDrawable& aDrawable)
sl@0: 		: iGraphicsResource(aGraphicsResource), iDrawable(aDrawable) {}
sl@0: 	CGraphicsResourceWrapper& iGraphicsResource;
sl@0: 	RSgDrawable& iDrawable;
sl@0: 	};
sl@0: 
sl@0: void CloseDrawable(TAny* aCleanupData)
sl@0: 	{
sl@0: 	TCloseDrawableData* data = static_cast<TCloseDrawableData*>(aCleanupData);
sl@0: 	data->iGraphicsResource.Close(data->iDrawable);
sl@0: 	}
sl@0: 
sl@0: TInt CWindowDrawableCache::UseL(const TSgDrawableId& aDrawableId, TInt aScreenNumber)
sl@0: 	{
sl@0: 	if(!iGraphicsResource)
sl@0: 		{
sl@0: 		if (!iGrwFactory)
sl@0: 			iGrwFactory = new (ELeave) CGraphicsResourceWrapperFactory;
sl@0: 		iGraphicsResource = iGrwFactory->NewGraphicsResourceWrapper();
sl@0: 		if(!iGraphicsResource)
sl@0: 			User::Leave(KErrNotSupported);
sl@0: 		}
sl@0: 	TCacheEntry entry(aDrawableId, aScreenNumber);
sl@0: 	TInt index = iCachedItems.FindInOrder(entry, TLinearOrder<TCacheEntry>(CDrawableCacheBase::Compare));
sl@0: 	if (index != KErrNotFound)
sl@0: 		{
sl@0: 		return KErrNone;
sl@0: 		}
sl@0: 	RSgDrawable* drawable = iGraphicsResource->NewDrawableL();
sl@0: 	CleanupStack::PushL(drawable);
sl@0: 	TInt err = iGraphicsResource->Open(*drawable, aDrawableId);
sl@0: 	if (err != KErrNone)
sl@0: 		{
sl@0: 		if (err == KErrNoMemory)
sl@0: 			{
sl@0: 			User::LeaveNoMemory();
sl@0: 			}
sl@0: 		return err;
sl@0: 		}
sl@0: 	TCloseDrawableData cleanupData(*iGraphicsResource, *drawable);
sl@0: 	CleanupStack::PushL(TCleanupItem(CloseDrawable, &cleanupData));
sl@0: 	RWsDrawableSource* cachedItem = new(ELeave) RWsDrawableSource(iWsSession);
sl@0: 	err = cachedItem->Create(*drawable, aScreenNumber);
sl@0: 	CleanupStack::PopAndDestroy(); //CloseDrawable()
sl@0: 	CleanupStack::PopAndDestroy(drawable);
sl@0: 	if (err != KErrNone)
sl@0: 		{
sl@0: 		delete cachedItem;
sl@0: 		if (err == KErrNoMemory)
sl@0: 			{
sl@0: 			User::LeaveNoMemory();
sl@0: 			}
sl@0: 		return err;
sl@0: 		}
sl@0: 	entry.iCachedItem = cachedItem;
sl@0: 	err = iCachedItems.InsertInOrder(entry, TLinearOrder<TCacheEntry>(CDrawableCacheBase::Compare));
sl@0: 	if (err != KErrNone)
sl@0: 		{
sl@0: 		cachedItem->Close();
sl@0: 		delete cachedItem;
sl@0: 		User::Leave(err);
sl@0: 		}
sl@0: 	return KErrNone;
sl@0: 	}
sl@0: 
sl@0: 
sl@0: CRenderStageDrawableCache::CRenderStageDrawableCache(MWsDrawableSourceProvider* aDrawResource)
sl@0: 	: iDrawResource(aDrawResource)
sl@0: 	{
sl@0: 	}
sl@0: 
sl@0: CRenderStageDrawableCache::~CRenderStageDrawableCache()
sl@0: 	{
sl@0: 	for (TInt i = 0; i < iCachedItems.Count(); ++i)
sl@0: 		{
sl@0: 		iDrawResource->CloseDrawableSource(iCachedItems[i].iCachedItem);
sl@0: 		}
sl@0: 	iCachedItems.Close();
sl@0: 	}
sl@0: 
sl@0: TInt CRenderStageDrawableCache::UseL(const TSgDrawableId& aDrawableId, TInt aScreenNumber)
sl@0: 	{
sl@0: 	if (!iDrawResource)
sl@0: 		{
sl@0: 		return KErrGeneral;
sl@0: 		}
sl@0: 	TCacheEntry entry(aDrawableId, aScreenNumber);
sl@0: 	TInt index = iCachedItems.FindInOrder(entry, TLinearOrder<TCacheEntry>(CDrawableCacheBase::Compare));
sl@0: 	if (index != KErrNotFound)
sl@0: 		{
sl@0: 		return KErrNone;
sl@0: 		}
sl@0: 	TInt err = iDrawResource->CreateDrawableSource(aDrawableId, entry.iCachedItem);
sl@0: 	if (err != KErrNone)
sl@0: 		{
sl@0: 		if (err == KErrNoMemory)
sl@0: 			{
sl@0: 			User::LeaveNoMemory();
sl@0: 			}
sl@0: 		return err;
sl@0: 		}
sl@0: 	err = iCachedItems.InsertInOrder(entry, TLinearOrder<TCacheEntry>(CDrawableCacheBase::Compare));
sl@0: 	if (err != KErrNone)
sl@0: 		{
sl@0: 		iDrawResource->CloseDrawableSource(entry.iCachedItem);
sl@0: 		User::Leave(err);
sl@0: 		}
sl@0: 	return KErrNone;
sl@0: 	}