/*
**	GadTools layout toolkit
**
**	Copyright © 1993-1996 by Olaf `Olsen' Barthel
**		Freely distributable.
**
**	:ts=4
*/

#ifndef _GTLAYOUT_GLOBAL_H
#include "gtlayout_global.h"
#endif

LONG
LTP_GetDepth(struct BitMap *BitMap)
{
	if(V39)
		return((LONG)GetBitMapAttr(BitMap,BMA_DEPTH));
	else
		return(BitMap->Depth);
}

VOID
LTP_DeleteBitMap(struct BitMap *BitMap,BOOL Chip)
{
	if(V39 && !Chip)
		FreeBitMap(BitMap);
	else
	{
		if(BitMap)
		{
			LONG i;

			for(i = 0 ; i < BitMap->Depth ; i++)
				FreeVec(BitMap->Planes[i]);

			FreeVec(BitMap);
		}
	}
}

struct BitMap *
LTP_CreateBitMap(LONG Width,LONG Height,LONG Depth,struct BitMap *Friend,BOOL Chip)
{
	struct BitMap *BitMap;

	if(V39 && !Chip)
		BitMap = AllocBitMap(Width,Height,Depth,BMF_MINPLANES,Friend);
	else
	{
		if(BitMap = (struct BitMap *)AllocVec(sizeof(struct BitMap),MEMF_ANY | MEMF_PUBLIC))
		{
			LONG PageSize;
			LONG i;

			InitBitMap(BitMap,Depth,Width,Height);

			PageSize = BitMap->BytesPerRow * BitMap->Rows;

			for(i = 0 ; i < Depth ; i++)
			{
				if(!(BitMap->Planes[i] = (PLANEPTR)AllocVec(PageSize,MEMF_CHIP)))
				{
					LONG j;

					for(j = 0 ; j < i ; j++)
						FreeVec(BitMap->Planes[j]);

					FreeVec(BitMap);

					return(NULL);
				}
			}
		}
	}

	return(BitMap);
}