1 // Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 //

    15 

    16 #ifndef __RENDERSTAGEMANAGER_H__

    17 #define __RENDERSTAGEMANAGER_H__

    18 

    19 #include <graphics/wsrenderstage.h>

    20 

    21 /**

    22 @file

    23 @internalTechnology

    24 @prototype

    25 */

    26 

    27 class CRenderStageManager : public CBase

    28 	{

    29 public:

    30 	/**

    31 	Connect to the Render Stage Plugins.

    32 	

    33 	Sets up a render stage chain hierarchy for a given screen and returns a

    34 	pointer to the first render stage.  The caller is responsible for calling

    35 	Release on the returned render stage when it is no longer needed, such as

    36 	during shutdown.

    37 	

    38 	@param	aScreenNumber	Render stage chains created on a per-screen basis

    39 	@param	aScreen			Screen object for the given screen number

    40 	@param	aScreenRedraw	Mechanism to allow render stages to call back into

    41 							the redraw store MWsScreenRedraw to for example cause

    42 							a re-scheduling of render stages to execute.

    43 	*/

    44 	static CWsRenderStage *ConnectL(TInt aScreenNumber, MWsScreen *aScreen, MWsScreenRedraw *aScreenRedraw);

    45 	

    46 	/**

    47 	Release Render Stage Resources.

    48 	

    49 	De-allocates the resources for the given render stage chain.

    50 	

    51 	@param	aRenderStage	Top-level render stage previously rendered by a

    52 							call to @c ConnectL

    53 	*/

    54 	static void Release(CWsRenderStage *aRenderStage);

    55 	};

    56 #endif // __RENDERSTAGEMANAGER_H__