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Annotation of src/usr.bin/window/wwmove.c, Revision 1.1

1.1     ! deraadt     1: /*     $NetBSD: wwmove.c,v 1.3 1995/09/28 10:35:41 tls 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. All advertising materials mentioning features or use of this software
        !            19:  *    must display the following acknowledgement:
        !            20:  *     This product includes software developed by the University of
        !            21:  *     California, Berkeley and its contributors.
        !            22:  * 4. Neither the name of the University nor the names of its contributors
        !            23:  *    may be used to endorse or promote products derived from this software
        !            24:  *    without specific prior written permission.
        !            25:  *
        !            26:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            27:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            28:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            29:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            30:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            31:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            32:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            33:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            34:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            35:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            36:  * SUCH DAMAGE.
        !            37:  */
        !            38:
        !            39: #ifndef lint
        !            40: #if 0
        !            41: static char sccsid[] = "@(#)wwmove.c   8.1 (Berkeley) 6/6/93";
        !            42: #else
        !            43: static char rcsid[] = "$NetBSD: wwmove.c,v 1.3 1995/09/28 10:35:41 tls Exp $";
        !            44: #endif
        !            45: #endif /* not lint */
        !            46:
        !            47: #include "ww.h"
        !            48:
        !            49: /*
        !            50:  * Move a window.  Should be unattached.
        !            51:  */
        !            52: wwmove(w, row, col)
        !            53: register struct ww *w;
        !            54: {
        !            55:        register dr, dc;
        !            56:        register i;
        !            57:
        !            58:        dr = row - w->ww_w.t;
        !            59:        dc = col - w->ww_w.l;
        !            60:
        !            61:        w->ww_w.t += dr;
        !            62:        w->ww_w.b += dr;
        !            63:        w->ww_w.l += dc;
        !            64:        w->ww_w.r += dc;
        !            65:
        !            66:        w->ww_b.t += dr;
        !            67:        w->ww_b.b += dr;
        !            68:        w->ww_b.l += dc;
        !            69:        w->ww_b.r += dc;
        !            70:
        !            71:        w->ww_i.t = MAX(w->ww_w.t, 0);
        !            72:        w->ww_i.b = MIN(w->ww_w.b, wwnrow);
        !            73:        w->ww_i.nr = w->ww_i.b - w->ww_i.t;
        !            74:        w->ww_i.l = MAX(w->ww_w.l, 0);
        !            75:        w->ww_i.r = MIN(w->ww_w.r, wwncol);
        !            76:        w->ww_i.nc = w->ww_i.r - w->ww_i.l;
        !            77:
        !            78:        w->ww_cur.r += dr;
        !            79:        w->ww_cur.c += dc;
        !            80:
        !            81:        w->ww_win -= dr;
        !            82:        for (i = w->ww_w.t; i < w->ww_w.b; i++)
        !            83:                w->ww_win[i] -= dc;
        !            84:        if (w->ww_fmap != 0) {
        !            85:                w->ww_fmap -= dr;
        !            86:                for (i = w->ww_w.t; i < w->ww_w.b; i++)
        !            87:                        w->ww_fmap[i] -= dc;
        !            88:        }
        !            89:        w->ww_nvis -= dr;
        !            90:        for (i = w->ww_i.t; i < w->ww_i.b; i++) {
        !            91:                register j = w->ww_i.l;
        !            92:                register char *win = &w->ww_win[i][j];
        !            93:                register char *smap = &wwsmap[i][j];
        !            94:                int nvis = 0;
        !            95:
        !            96:                for (; j < w->ww_i.r; j++, win++, smap++)
        !            97:                        if (*win == 0 && *smap == w->ww_index)
        !            98:                                nvis++;
        !            99:                w->ww_nvis[i] = nvis;
        !           100:        }
        !           101:        w->ww_buf -= dr;
        !           102:        for (i = w->ww_b.t; i < w->ww_b.b; i++)
        !           103:                w->ww_buf[i] -= dc;
        !           104: }