// Copyright (c) 2007-2009 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:+
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// Declaration of a Direct Graphics Device Interface (GDI) Driver implementation,+
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// this class actually implements the HAI.+
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// +
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//+
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+
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#ifndef __DIRECTGDIDRIVERIMPL_H__+
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#define __DIRECTGDIDRIVERIMPL_H__+
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+
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/**+
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@file+
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@internalComponent Reference implementation of Open VG hardware accelerated DirectGDI adaptation.+
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*/+
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#include "vgimagecache.h"+
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#include "directgdidrawableref.h"+
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#include "directgdiimageref.h"+
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#include "directgdidriverprocessstate.h"+
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#include "glyphimagecache.h"+
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#include <graphics/directgdidriverinternal.h>+
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#include <graphics/directgdiextensioninterfaces.h>+
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#include <e32hashtab.h>+
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#include <e32cmn.h>+
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#include <pls.h>+
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+
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+
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// Forward declarations.+
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//+
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class CDirectGdiImageTargetImpl;+
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class CDirectGdiImageSourceImpl;+
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class CVgEngine;+
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class CDirectGdiDrawableRef;+
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class RDirectGdiImageTarget;+
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+
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/**+
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Represents the body part of CDirectGdiDriver that actually implements the HAI. Derives from the CDirectGdiDriverInternal class and implements all the +
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interfaces to provide the functionality required by the generic layer.+
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*/+
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NONSHARABLE_CLASS(CDirectGdiDriverImpl): public CDirectGdiDriverInternal, public MDirectGdiDriverCacheSize+
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	{+
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public:+
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	static TInt New(CDirectGdiDriverInternal*& aInternal, RLibrary aLibrary);+
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	~CDirectGdiDriverImpl();+
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+
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	// From CDirectGdiDriverInternal	+
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	void Flush();+
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	void Finish();	+
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	TInt GetError();+
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	void SetError(TInt aErr);+
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	TInt CreateDrawableSource(TInt& aHandleRet, const RSgDrawable& aSgDrawable);+
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	void CloseDrawableSource(TInt& aHandle) ;	+
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	TInt CreateImageTarget(TInt& aHandleRet, const RSgImage& aImageDestination);+
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	void CloseImageTarget(TInt& aHandle);+
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	TInt CreateEngine(MDirectGdiEngine*& aDirectGdiEngine);+
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	void DestroyEngine(MDirectGdiEngine* aDirectGdiEngine);+
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	TInt GetInterface(TUid aInterfaceId, TAny*& aInterface);+
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	+
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	// From MDirectGdiDriverCacheSize+
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	TInt SetMaxImageCacheSize(TInt aSize);	+
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	TInt MaxImageCacheSize() const;+
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	TInt SetMaxGlyphCacheSize(TInt aSize);+
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	TInt MaxGlyphCacheSize() const;+
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	+
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	void SetCurrentEngine(CVgEngine* aCurrentEngine);+
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	void SetCurrentTarget(CDirectGdiImageTargetImpl* aCurrentTarget);+
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	TBool IsCurrentEngine(const CVgEngine* aCurrentEngine) const;+
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	TBool IsCurrentTarget(const CDirectGdiImageTargetImpl* aCurrentTarget) const;+
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	void Activate(CDirectGdiImageTargetImpl* aRenderingTarget);+
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	void Reactivate(CDirectGdiImageTargetImpl* aRenderingTarget);+
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	void Deactivate(CDirectGdiImageTargetImpl* aRenderingTarget);+
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	CDirectGdiImageSourceImpl* GetImageSourceFromHandle(TInt aHandle) const;	+
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	CDirectGdiImageTargetImpl* GetImageTargetFromHandle(TInt aHandle) const;+
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	TBool IsImageSource(TInt aHandle) const;+
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	+
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	CFontGlyphImageStorage* FontGlyphImageStorage() const;+
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	TInt PreAllocateFontGlyphImages(); //images will be used to draw glyphs if the system runs out of memory+
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	CVgImageCache* VgImageCache() const;+
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+
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	// VGImage cache commands+
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	VGImage GetVgImageFromCache(const CFbsBitmap& aBitmap, const TPoint& aOrigin) const;+
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	TBool AddVgImageToCache(const CFbsBitmap& aBitmap, VGImage& aImage, const TPoint& aOrigin);+
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	+
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	TInt RegisterSourceImage(const CDirectGdiImageSourceImpl& aImage);+
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	TInt RegisterTargetImage(const CDirectGdiImageTargetImpl& aImage);+
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	TInt UnregisterSourceImage(const CDirectGdiImageSourceImpl& aImage);+
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	TInt UnregisterTargetImage(const CDirectGdiImageTargetImpl& aImage);+
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	+
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	inline EGLDisplay EglDisplay() const;+
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	inline XDirectGdiDriverProcessState& ProcessState() const;+
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	+
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	static TInt GetVgError();+
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+
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private:+
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	CDirectGdiDriverImpl(RLibrary aLibrary);+
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	TInt Construct();+
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	TInt InitializeEglConfigs(EGLDisplay display);+
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		+
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#ifdef _DEBUG+
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	void CheckSourceIsValid(TInt aHandle) const;+
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	void CheckTargetIsValid(TInt aHandle) const;+
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#endif // _DEBUG+
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+
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private:+
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	TInt iErrorCode; 	/**< The first error code to occur in any CVgEngine instance.*/+
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	RHashMap<TInt, EGLContext> iPixelContextMap;+
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	RHashMap<TInt, EGLConfig> iPixelConfigMap;+
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	CVgEngine* iCurrentEngine;+
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	CDirectGdiImageTargetImpl* iCurrentTarget;+
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	EGLContext iSharedContext;+
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	EGLDisplay iDisplay;+
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	RPointerArray<CDirectGdiImageRef> iSourceArray;	/**< An array of pointers to all sources created and currently held open by this driver.*/+
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	RPointerArray<CDirectGdiImageRef> iTargetArray;	/**< An array of pointers to all targets created and currently held open by this driver.*/+
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	+
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	CFontGlyphImageStorage* iGlyphImageStorage;+
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	CVgImageCache* iVgImageCache;+
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+
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#ifndef __WINS__+
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	static XDirectGdiDriverProcessState gProcessState;+
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#endif+
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	};+
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+
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/**+
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@return A reference to the process state object.+
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*/+
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inline XDirectGdiDriverProcessState& CDirectGdiDriverImpl::ProcessState() const+
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	{+
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#ifdef __WINS__+
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	const TUid KDirectGdiAdapterUid = {0x102858E9};+
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	return *Pls<XDirectGdiDriverProcessState>(KDirectGdiAdapterUid);+
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#else+
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	return gProcessState;+
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#endif+
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	}+
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/**+
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@return A handle to the EGLDisplay associated with this driver.+
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*/+
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inline EGLDisplay CDirectGdiDriverImpl::EglDisplay() const +
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	{+
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	return iDisplay; +
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	}+
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+
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#endif //__DIRECTGDIDRIVERIMPL_H__+
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