#ifndef GRAPHICS_LAYERS_H
#define GRAPHICS_LAYERS_H
/*
**      $VER: layers.h 39.4 (14.4.1992)
**      Includes Release 44.1
**
**      (C) Copyright 1985-1999 Amiga, Inc.
**          All Rights Reserved
*/

#ifndef EXEC_LISTS_H
#include <exec/lists.h>
#endif

#ifndef EXEC_SEMAPHORES_H
#include <exec/semaphores.h>
#endif

#define LAYERSIMPLE             1
#define LAYERSMART              2
#define LAYERSUPER              4
#define LAYERUPDATING           0x10
#define LAYERBACKDROP           0x40
#define LAYERREFRESH            0x80
#define LAYERIREFRESH           0x200
#define LAYERIREFRESH2          0x400
#define LAYER_CLIPRECTS_LOST    0x100   /* during BeginUpdate */
                                        /* or during layerop */
                                        /* this happens if out of memory */

struct Layer_Info
{
struct  Layer           *top_layer;
struct  Layer           *check_lp;              /* !! Private !! */
struct  ClipRect        *obs;
struct  ClipRect        *FreeClipRects;         /* !! Private !! */
        LONG            PrivateReserve1;        /* !! Private !! */
        LONG            PrivateReserve2;        /* !! Private !! */
struct  SignalSemaphore Lock;                   /* !! Private !! */
struct  MinList         gs_Head;                /* !! Private !! */
        WORD            PrivateReserve3;        /* !! Private !! */
        VOID            *PrivateReserve4;       /* !! Private !! */
        UWORD           Flags;
        BYTE            fatten_count;           /* !! Private !! */
        BYTE            LockLayersCount;        /* !! Private !! */
        WORD            PrivateReserve5;        /* !! Private !! */
        VOID            *BlankHook;             /* !! Private !! */
        VOID            *LayerInfo_extra;       /* !! Private !! */
};

#define NEWLAYERINFO_CALLED 1

/*
 * LAYERS_NOBACKFILL is the value needed to get no backfill hook
 * LAYERS_BACKFILL is the value needed to get the default backfill hook
 */
#define LAYERS_NOBACKFILL       ((struct Hook *)1)
#define LAYERS_BACKFILL         ((struct Hook *)0)

#endif  /* GRAPHICS_LAYERS_H */