usr.bin/window/wwlabel.c

   1 /*
   2  * Copyright (c) 1983, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * This code is derived from software contributed to Berkeley by
   6  * Edward Wang at The University of California, Berkeley.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. All advertising materials mentioning features or use of this software
  17  *    must display the following acknowledgement:
  18  *      This product includes software developed by the University of
  19  *      California, Berkeley and its contributors.
  20  * 4. Neither the name of the University nor the names of its contributors
  21  *    may be used to endorse or promote products derived from this software
  22  *    without specific prior written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  34  * SUCH DAMAGE.
  35  *
  36  * @(#)wwlabel.c        8.1 (Berkeley) 6/6/93
  37  * $FreeBSD: src/usr.bin/window/wwlabel.c,v 1.3.14.1 2001/05/17 09:45:01 obrien Exp $
  38  * $DragonFly: src/usr.bin/window/wwlabel.c,v 1.2 2003/06/17 04:29:34 dillon Exp $
  39  */
  40
  41 #include "ww.h"
  42 #include "char.h"
  43
  44 /*
  45  * Label window w on f,
  46  * at 1 line above w and 'where' columns from it's left edge.
  47  * Gross, but it works.
  48  */
  49 wwlabel(w, f, where, l, mode)
  50 struct ww *w;
  51 struct ww *f;
  52 char *l;
  53 {
  54         int row;
  55         register j;
  56         int jj;
  57         register char *win;
  58         register union ww_char *buf;
  59         register union ww_char *ns;
  60         register char *fmap;
  61         register char *smap;
  62         char touched;
  63         unsigned char *p;
  64         static unsigned char cbuf[2];
  65
  66         if (f->ww_fmap == 0)
  67                 return;
  68
  69         row = w->ww_w.t - 1;
  70         if (row < f->ww_i.t || row >= f->ww_i.b)
  71                 return;
  72         win = f->ww_win[row];
  73         buf = f->ww_buf[row];
  74         fmap = f->ww_fmap[row];
  75         ns = wwns[row];
  76         smap = wwsmap[row];
  77         touched = wwtouched[row];
  78         mode <<= WWC_MSHIFT;
  79
  80         jj = MIN(w->ww_i.r, f->ww_i.r);
  81         j = w->ww_i.l + where;
  82         while (j < jj && *l) {
  83                 if (isctrl(*l))
  84                         p = unctrl(*l);
  85                 else {
  86                         cbuf[0] = *l;
  87                         p = cbuf;
  88                 }
  89                 for (l++; j < jj && *p; j++, p++) {
  90                         /* can't label if not already framed */
  91                         if (win[j] & WWM_GLS)
  92                                 continue;
  93                         if (smap[j] != f->ww_index)
  94                                 buf[j].c_w = mode | *p;
  95                         else {
  96                                 ns[j].c_w = (buf[j].c_w = mode | *p)
  97                                                 ^ win[j] << WWC_MSHIFT;
  98                                 touched |= WWU_TOUCHED;
  99                         }
 100                         fmap[j] |= WWF_LABEL;
 101                 }
 102         }
 103         wwtouched[row] = touched;
 104 }