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/* Copyright (c) 1993
* Juergen Weigert (jnweiger@immd4.informatik.uni-erlangen.de)
* Michael Schroeder (mlschroe@immd4.informatik.uni-erlangen.de)
* Copyright (c) 1987 Oliver Laumann
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program (see the file COPYING); if not, write to the
* Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*
****************************************************************
* $Id: overlay.h,v 1.3 1994/05/31 12:32:31 mlschroe Exp $ FAU
*/
/*
* This is the overlay structure. It is used to create a seperate
* layer over the current windows.
*/
struct LayFuncs
{
void (*LayProcess) __P((char **, int *));
void (*LayAbort) __P((void));
void (*LayRedisplayLine) __P((int, int, int, int));
void (*LayClearLine) __P((int, int, int));
int (*LayRewrite) __P((int, int, int, int));
void (*LaySetCursor) __P((void));
int (*LayResize) __P((int, int));
void (*LayRestore) __P((void));
};
struct layer
{
struct layer *l_next;
int l_block;
struct LayFuncs *l_layfn;
char *l_data; /* should be void * */
};
#define Process (*D_layfn->LayProcess)
#define Abort (*D_layfn->LayAbort)
#define RedisplayLine (*D_layfn->LayRedisplayLine)
#define ClearLine (*D_layfn->LayClearLine)
#define Rewrite (*D_layfn->LayRewrite)
#define SetCursor (*D_layfn->LaySetCursor)
#define Resize (*D_layfn->LayResize)
#define Restore (*D_layfn->LayRestore)
#define LAY_CALL_UP(fn) \
{ \
struct layer *oldlay = D_lay; \
D_lay = D_lay->l_next; \
D_layfn = D_lay->l_layfn; \
fn; \
D_lay = oldlay; \
D_layfn = D_lay->l_layfn; \
}
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