haiku-beta6/headers/private/servers/app/BitmapManager.h

//------------------------------------------------------------------------------
//	Copyright (c) 2001-2002, Haiku, Inc.
//
//	Permission is hereby granted, free of charge, to any person obtaining a
//	copy of this software and associated documentation files (the "Software"),
//	to deal in the Software without restriction, including without limitation
//	the rights to use, copy, modify, merge, publish, distribute, sublicense,
//	and/or sell copies of the Software, and to permit persons to whom the
//	Software is furnished to do so, subject to the following conditions:
//
//	The above copyright notice and this permission notice shall be included in
//	all copies or substantial portions of the Software.
//
//	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
//	FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
//	DEALINGS IN THE SOFTWARE.
//
//	File Name:		BitmapManager.h
//	Author:			DarkWyrm <[email protected]>
//	Description:	Handler for allocating and freeing area memory for BBitmaps 
//					on the server side. Utilizes the BGET pool allocator.
//------------------------------------------------------------------------------
#ifndef BITMAP_MANAGER_H_
#define BITMAP_MANAGER_H_

#include <GraphicsDefs.h>
#include <List.h>
#include <OS.h>
#include <Rect.h>

#include "BGet++.h"
#include "TokenHandler.h"

class ServerBitmap;

/*!
	\class BitmapManager BitmapManager.h
	\brief Handler for BBitmap allocation
	
	Whenever a ServerBitmap associated with a client-side BBitmap needs to be 
	created or destroyed, the BitmapManager needs to handle it. It takes care of 
	all memory management related to them.

	NOTE: The allocator used is not thread-safe, it is currently protected
	by the BitmapManager lock.
*/
class BitmapManager {
 public:
								BitmapManager();
	virtual						~BitmapManager();

			ServerBitmap*		CreateBitmap(BRect bounds,
											 color_space space,
											 int32 flags,
											 int32 bytesPerRow = -1,
											 screen_id screen = B_MAIN_SCREEN_ID);
			void				DeleteBitmap(ServerBitmap* bitmap);
 protected:
			BList				fBitmapList;
			area_id				fBitmapArea;
			int8*				fBuffer;
			TokenHandler		fTokenizer;
			sem_id				fLock;
			AreaPool			fMemPool;
};

extern BitmapManager *bitmapmanager;

#endif