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Annotation of 43BSDReno/usr.bin/window/wwlabel.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1983 Regents of the University of California.
        !             3:  * 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 are permitted provided
        !             9:  * that: (1) source distributions retain this entire copyright notice and
        !            10:  * comment, and (2) distributions including binaries display the following
        !            11:  * acknowledgement:  ``This product includes software developed by the
        !            12:  * University of California, Berkeley and its contributors'' in the
        !            13:  * documentation or other materials provided with the distribution and in
        !            14:  * all advertising materials mentioning features or use of this software.
        !            15:  * Neither the name of the University nor the names of its contributors may
        !            16:  * be used to endorse or promote products derived from this software without
        !            17:  * specific prior written permission.
        !            18:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
        !            19:  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
        !            20:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            21:  */
        !            22: 
        !            23: #ifndef lint
        !            24: static char sccsid[] = "@(#)wwlabel.c  3.17 (Berkeley) 6/6/90";
        !            25: #endif /* not lint */
        !            26: 
        !            27: #include "ww.h"
        !            28: #include "char.h"
        !            29: 
        !            30: /*
        !            31:  * Label window w on f,
        !            32:  * at 1 line above w and 'where' columns from it's left edge.
        !            33:  * Gross, but it works.
        !            34:  */
        !            35: wwlabel(w, f, where, l, mode)
        !            36: struct ww *w;
        !            37: struct ww *f;
        !            38: char *l;
        !            39: {
        !            40:        int row;
        !            41:        register j;
        !            42:        int jj;
        !            43:        register char *win;
        !            44:        register union ww_char *buf;
        !            45:        register union ww_char *ns;
        !            46:        register char *fmap;
        !            47:        register char *smap;
        !            48:        char touched;
        !            49:        char *p;
        !            50: 
        !            51:        if (f->ww_fmap == 0)
        !            52:                return;
        !            53: 
        !            54:        row = w->ww_w.t - 1;
        !            55:        if (row < f->ww_i.t || row >= f->ww_i.b)
        !            56:                return;
        !            57:        win = f->ww_win[row];
        !            58:        buf = f->ww_buf[row];
        !            59:        fmap = f->ww_fmap[row];
        !            60:        ns = wwns[row];
        !            61:        smap = wwsmap[row];
        !            62:        touched = wwtouched[row];
        !            63:        mode <<= WWC_MSHIFT;
        !            64: 
        !            65:        jj = MIN(w->ww_i.r, f->ww_i.r);
        !            66:        j = w->ww_i.l + where;
        !            67:        while (j < jj && *l)
        !            68:                for (p = unctrl(*l++); j < jj && *p; j++, p++) {
        !            69:                        /* can't label if not already framed */
        !            70:                        if (win[j] & WWM_GLS)
        !            71:                                continue;
        !            72:                        if (smap[j] != f->ww_index)
        !            73:                                buf[j].c_w = mode | *p;
        !            74:                        else {
        !            75:                                ns[j].c_w = (buf[j].c_w = mode | *p)
        !            76:                                                ^ win[j] << WWC_MSHIFT;
        !            77:                                touched |= WWU_TOUCHED;
        !            78:                        }
        !            79:                        fmap[j] |= WWF_LABEL;
        !            80:                }
        !            81:        wwtouched[row] = touched;
        !            82: }

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