usr.bin/window/wwlabel.c

   1 /*      $NetBSD: wwlabel.c,v 1.8 2009/04/14 08:50:06 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. Neither the name of the University nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  */
  34
  35 #include <sys/cdefs.h>
  36 #ifndef lint
  37 #if 0
  38 static char sccsid[] = "@(#)wwlabel.c   8.1 (Berkeley) 6/6/93";
  39 #else
  40 __RCSID("$NetBSD: wwlabel.c,v 1.8 2009/04/14 08:50:06 lukem Exp $");
  41 #endif
  42 #endif /* not lint */
  43
  44 #include "ww.h"
  45 #include "char.h"
  46
  47 /*
  48  * Label window w on f,
  49  * at 1 line above w and 'where' columns from it's left edge.
  50  * Gross, but it works.
  51  */
  52 void
  53 wwlabel(struct ww *w, struct ww *f, int where, char *l, int mode)
  54 {
  55         int row;
  56         int j;
  57         int jj;
  58         char *win;
  59         union ww_char *buf;
  60         union ww_char *ns;
  61         char *fmap;
  62         unsigned char *smap;
  63         char touched;
  64         const char *p;
  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                 for (p = unctrl(*l++); j < jj && *p; j++, p++) {
  84                         /* can't label if not already framed */
  85                         if (win[j] & WWM_GLS)
  86                                 continue;
  87                         if (smap[j] != f->ww_index)
  88                                 buf[j].c_w = mode | *p;
  89                         else {
  90                                 ns[j].c_w = (buf[j].c_w = mode | *p)
  91                                                 ^ win[j] << WWC_MSHIFT;
  92                                 touched |= WWU_TOUCHED;
  93                         }
  94                         fmap[j] |= WWF_LABEL;
  95                 }
  96         wwtouched[row] = touched;
  97 }