usr.bin/window/wwlabel.c

   1 /*      @(#)wwlabel.c   8.1 (Berkeley) 6/6/93   */
   2 /*      $NetBSD: wwlabel.c,v 1.8 2009/04/14 08:50:06 lukem Exp $        */
   3
   4 /*
   5  * Copyright (c) 1983, 1993
   6  *      The Regents of the University of California.  All rights reserved.
   7  *
   8  * This code is derived from software contributed to Berkeley by
   9  * Edward Wang at The University of California, Berkeley.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  * 3. Neither the name of the University nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 #include "ww.h"
  37 #include "char.h"
  38
  39 /*
  40  * Label window w on f,
  41  * at 1 line above w and 'where' columns from it's left edge.
  42  * Gross, but it works.
  43  */
  44 void
  45 wwlabel(struct ww *w, struct ww *f, int where, char *l, int mode)
  46 {
  47         int row;
  48         int j;
  49         int jj;
  50         char *win;
  51         union ww_char *buf;
  52         union ww_char *ns;
  53         char *fmap;
  54         unsigned char *smap;
  55         char touched;
  56         const char *p;
  57
  58         if (f->ww_fmap == 0)
  59                 return;
  60
  61         row = w->ww_w.t - 1;
  62         if (row < f->ww_i.t || row >= f->ww_i.b)
  63                 return;
  64         win = f->ww_win[row];
  65         buf = f->ww_buf[row];
  66         fmap = f->ww_fmap[row];
  67         ns = wwns[row];
  68         smap = wwsmap[row];
  69         touched = wwtouched[row];
  70         mode <<= WWC_MSHIFT;
  71
  72         jj = MIN(w->ww_i.r, f->ww_i.r);
  73         j = w->ww_i.l + where;
  74         while (j < jj && *l)
  75                 for (p = unctrl(*l++); j < jj && *p; j++, p++) {
  76                         /* can't label if not already framed */
  77                         if (win[j] & WWM_GLS)
  78                                 continue;
  79                         if (smap[j] != f->ww_index)
  80                                 buf[j].c_w = mode | *p;
  81                         else {
  82                                 ns[j].c_w = (buf[j].c_w = mode | *p)
  83                                                 ^ win[j] << WWC_MSHIFT;
  84                                 touched |= WWU_TOUCHED;
  85                         }
  86                         fmap[j] |= WWF_LABEL;
  87                 }
  88         wwtouched[row] = touched;
  89 }