#include "copyright.h"

/* $XConsortium: XImText16.c,v 11.14 88/09/06 16:08:40 jim Exp $ */
/* Copyright    Massachusetts Institute of Technology    1986	 */

#include "Xlibint.h"

XDrawImageString16 (dpy, d, gc, x, y, string, length)
  register Display *dpy;
  Drawable d;
  GC gc;
  int x, y;
  XChar2b *string;
  int length;
{
  register xImageText16Req *req;
  XChar2b *CharacterOffset = string;
  int FirstTimeThrough = True;
  int lastX = 0;

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

  while (length > 0) {
    int Unit, Datalength;

    if (length > 255)
      Unit = 255;
    else
      Unit = length;

    if (FirstTimeThrough) {
      FirstTimeThrough = False;
    }
    else {
      int direction, ascent, descent;
      XCharStruct overall;
      XFontStruct *FontStruct;

      UnlockDisplay (dpy);

      FontStruct = XQueryFont (dpy, gc->gid);

      XTextExtents16 (FontStruct, CharacterOffset - 255, 255,
		      &direction, &ascent, &descent, &overall);

      Xfree (FontStruct);

      LockDisplay (dpy);

      x = lastX + overall.width;
    }


    GetReq (ImageText16, req);
    req->length += ((Unit << 1) + 3) >> 2;
    req->nChars = Unit;
    req->drawable = d;
    req->gc = gc->gid;
    req->y = y;

    lastX = req->x = x;
    Datalength = Unit << 1;
    Data (dpy, (char *) CharacterOffset, (long) Datalength);
    CharacterOffset += Unit;
    length -= Unit;
  }
  UnlockDisplay (dpy);
  SyncHandle ();
}