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Annotation of src/usr.bin/window/cmd5.c, Revision 1.4

1.4     ! mpech       1: /*     $OpenBSD: cmd5.c,v 1.3 1997/02/25 00:03:59 downsj Exp $ */
1.1       deraadt     2: /*     $NetBSD: cmd5.c,v 1.3 1995/09/28 10:34:09 tls 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. All advertising materials mentioning features or use of this software
                     20:  *    must display the following acknowledgement:
                     21:  *     This product includes software developed by the University of
                     22:  *     California, Berkeley and its contributors.
                     23:  * 4. Neither the name of the University nor the names of its contributors
                     24:  *    may be used to endorse or promote products derived from this software
                     25:  *    without specific prior written permission.
                     26:  *
                     27:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     28:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     29:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     30:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     31:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     32:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     33:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     34:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     35:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     36:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     37:  * SUCH DAMAGE.
                     38:  */
                     39:
                     40: #ifndef lint
                     41: #if 0
                     42: static char sccsid[] = "@(#)cmd5.c     8.1 (Berkeley) 6/6/93";
                     43: #else
1.4     ! mpech      44: static char rcsid[] = "$OpenBSD: cmd5.c,v 1.3 1997/02/25 00:03:59 downsj Exp $";
1.1       deraadt    45: #endif
                     46: #endif /* not lint */
                     47:
                     48: #include "defs.h"
                     49:
                     50: /*
                     51:  * Window movement.
                     52:  */
                     53:
                     54: c_move(w)
1.4     ! mpech      55: struct ww *w;
1.1       deraadt    56: {
                     57:        int col, row;
                     58:        int mincol, minrow;
                     59:        int maxcol, maxrow;
                     60:        int curcol, currow;
                     61:
                     62:        if (!terse)
                     63:                wwputs("New window position: ", cmdwin);
                     64:        col = w->ww_w.l;
                     65:        row = w->ww_w.t;
                     66:        wwadd(boxwin, framewin->ww_back);
                     67:        for (;;) {
                     68:                wwbox(boxwin, row - 1, col - 1, w->ww_w.nr + 2, w->ww_w.nc + 2);
                     69:                getminmax(row, w->ww_w.nr, 1, wwnrow,
                     70:                        &currow, &minrow, &maxrow);
                     71:                getminmax(col, w->ww_w.nc, 0, wwncol,
                     72:                        &curcol, &mincol, &maxcol);
                     73:                wwsetcursor(currow, curcol);
                     74:                while (wwpeekc() < 0)
                     75:                        wwiomux();
                     76:                switch (getpos(&row, &col, minrow, mincol, maxrow, maxcol)) {
                     77:                case 3:
                     78:                        wwunbox(boxwin);
                     79:                        wwdelete(boxwin);
                     80:                        return;
                     81:                case 2:
                     82:                        wwunbox(boxwin);
                     83:                        break;
                     84:                case 1:
                     85:                        wwunbox(boxwin);
                     86:                case 0:
                     87:                        continue;
                     88:                }
                     89:                break;
                     90:        }
                     91:        wwdelete(boxwin);
                     92:        if (!terse)
                     93:                wwputc('\n', cmdwin);
                     94:        wwcurtowin(cmdwin);
                     95:        movewin(w, row, col);
                     96: }
                     97:
                     98: movewin(w, row, col)
1.4     ! mpech      99: struct ww *w;
1.1       deraadt   100: {
                    101:        struct ww *back = w->ww_back;
                    102:
                    103:        w->ww_alt.t = w->ww_w.t;
                    104:        w->ww_alt.l = w->ww_w.l;
                    105:        wwdelete(w);
                    106:        wwmove(w, row, col);
                    107:        wwadd(w, back);
                    108:        reframe();
                    109: }
                    110:
                    111: /*
                    112:  * Weird stufff, don't ask.
                    113:  */
                    114: getminmax(x, n, a, b, curx, minx, maxx)
1.4     ! mpech     115: int x, n, a, b;
1.1       deraadt   116: int *curx, *minx, *maxx;
                    117: {
                    118:        if (x < 0)
                    119:                *curx = x + n - 1;
                    120:        else
                    121:                *curx = x;
                    122:
                    123:        if (x <= a)
                    124:                *minx = 1 - n;
                    125:        else if (x <= b - n)
                    126:                *minx = a;
                    127:        else
                    128:                *minx = b - n;
                    129:
                    130:        if (x >= b - n)
                    131:                *maxx = b - 1;
                    132:        else if (x >= a)
                    133:                *maxx = b - n;
                    134:        else
                    135:                *maxx = a;
                    136: }