window/wwlabel.c

   1 /*      $NetBSD: wwlabel.c,v 1.5 1997/11/21 08:37:32 lukem Exp $        */
   2
   3 /*
   4  * Copyright (c) 1983, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * Edward Wang at The University of California, Berkeley.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. All advertising materials mentioning features or use of this software
  19  *    must display the following acknowledgement:
  20  *      This product includes software developed by the University of
  21  *      California, Berkeley and its contributors.
  22  * 4. Neither the name of the University nor the names of its contributors
  23  *    may be used to endorse or promote products derived from this software
  24  *    without specific prior written permission.
  25  *
  26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  36  * SUCH DAMAGE.
  37  */
  38
  39 #include <sys/cdefs.h>
  40 #ifndef lint
  41 #if 0
  42 static char sccsid[] = "@(#)wwlabel.c   8.1 (Berkeley) 6/6/93";
  43 #else
  44 __RCSID("$NetBSD: wwlabel.c,v 1.5 1997/11/21 08:37:32 lukem Exp $");
  45 #endif
  46 #endif /* not lint */
  47
  48 #include "ww.h"
  49 #include "char.h"
  50
  51 /*
  52  * Label window w on f,
  53  * at 1 line above w and 'where' columns from it's left edge.
  54  * Gross, but it works.
  55  */
  56 void
  57 wwlabel(w, f, where, l, mode)
  58         struct ww *w;
  59         struct ww *f;
  60         int where;
  61         char *l;
  62         int mode;
  63 {
  64         int row;
  65         int j;
  66         int jj;
  67         char *win;
  68         union ww_char *buf;
  69         union ww_char *ns;
  70         char *fmap;
  71         unsigned char *smap;
  72         char touched;
  73         char *p;
  74
  75         if (f->ww_fmap == 0)
  76                 return;
  77
  78         row = w->ww_w.t - 1;
  79         if (row < f->ww_i.t || row >= f->ww_i.b)
  80                 return;
  81         win = f->ww_win[row];
  82         buf = f->ww_buf[row];
  83         fmap = f->ww_fmap[row];
  84         ns = wwns[row];
  85         smap = wwsmap[row];
  86         touched = wwtouched[row];
  87         mode <<= WWC_MSHIFT;
  88
  89         jj = MIN(w->ww_i.r, f->ww_i.r);
  90         j = w->ww_i.l + where;
  91         while (j < jj && *l)
  92                 for (p = unctrl(*l++); j < jj && *p; j++, p++) {
  93                         /* can't label if not already framed */
  94                         if (win[j] & WWM_GLS)
  95                                 continue;
  96                         if (smap[j] != f->ww_index)
  97                                 buf[j].c_w = mode | *p;
  98                         else {
  99                                 ns[j].c_w = (buf[j].c_w = mode | *p)
 100                                                 ^ win[j] << WWC_MSHIFT;
 101                                 touched |= WWU_TOUCHED;
 102                         }
 103                         fmap[j] |= WWF_LABEL;
 104                 }
 105         wwtouched[row] = touched;
 106 }