#include "copyright.h"

/* $XConsortium: XDrLine.c,v 11.13 88/09/06 16:06:41 jim Exp $ */
/* Copyright    Massachusetts Institute of Technology    1986	 */

#include "Xlibint.h"

/* precompute the maximum size of batching request allowed */

static int size = SIZEOF (xPolySegmentReq) + EPERBATCH * SIZEOF (xSegment);

XDrawLine (dpy, d, gc, x1, y1, x2, y2)
  register Display *dpy;
  Drawable d;
  GC gc;
  int x1, y1, x2, y2;
{
  register xSegment *segment;
#ifdef MUSTCOPY
  xSegment segmentdata;
  long len = SIZEOF (xSegment);

  segment = &segmentdata;
#endif				/* not MUSTCOPY */

  LockDisplay (dpy);
  FlushGC (dpy, gc);

  {
    register xPolySegmentReq *req = (xPolySegmentReq *) dpy->last_req;

    /* if same as previous request, with same drawable, batch requests */
    if (
	 (req->reqType == X_PolySegment)
	 && (req->drawable == d)
	 && (req->gc == gc->gid)
	 && ((dpy->bufptr + SIZEOF (xSegment)) <= dpy->bufmax)
	 && (((char *) dpy->bufptr - (char *) req) < size)) {
      req->length += SIZEOF (xSegment) >> 2;
#ifndef MUSTCOPY
      segment = (xSegment *) dpy->bufptr;
      dpy->bufptr += SIZEOF (xSegment);
#endif				/* not MUSTCOPY */
    }

    else {
      GetReqExtra (PolySegment, SIZEOF (xSegment), req);
      req->drawable = d;
      req->gc = gc->gid;
#ifdef MUSTCOPY
      dpy->bufptr -= SIZEOF (xSegment);
#else
      segment = (xSegment *) NEXTPTR (req, xPolySegmentReq);
#endif				/* MUSTCOPY */
    }

    segment->x1 = x1;
    segment->y1 = y1;
    segment->x2 = x2;
    segment->y2 = y2;

#ifdef MUSTCOPY
    Data (dpy, (char *) &segmentdata, len);
#endif				/* MUSTCOPY */

    UnlockDisplay (dpy);
    SyncHandle ();
  }
}