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Annotation of 43BSDReno/usr.bin/window/wwmove.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[] = "@(#)wwmove.c   3.11 (Berkeley) 6/6/90";
        !            25: #endif /* not lint */
        !            26: 
        !            27: #include "ww.h"
        !            28: 
        !            29: /*
        !            30:  * Move a window.  Should be unattached.
        !            31:  */
        !            32: wwmove(w, row, col)
        !            33: register struct ww *w;
        !            34: {
        !            35:        register dr, dc;
        !            36:        register i;
        !            37: 
        !            38:        dr = row - w->ww_w.t;
        !            39:        dc = col - w->ww_w.l;
        !            40: 
        !            41:        w->ww_w.t += dr;
        !            42:        w->ww_w.b += dr;
        !            43:        w->ww_w.l += dc;
        !            44:        w->ww_w.r += dc;
        !            45: 
        !            46:        w->ww_b.t += dr;
        !            47:        w->ww_b.b += dr;
        !            48:        w->ww_b.l += dc;
        !            49:        w->ww_b.r += dc;
        !            50: 
        !            51:        w->ww_i.t = MAX(w->ww_w.t, 0);
        !            52:        w->ww_i.b = MIN(w->ww_w.b, wwnrow);
        !            53:        w->ww_i.nr = w->ww_i.b - w->ww_i.t;
        !            54:        w->ww_i.l = MAX(w->ww_w.l, 0);
        !            55:        w->ww_i.r = MIN(w->ww_w.r, wwncol);
        !            56:        w->ww_i.nc = w->ww_i.r - w->ww_i.l;
        !            57: 
        !            58:        w->ww_cur.r += dr;
        !            59:        w->ww_cur.c += dc;
        !            60: 
        !            61:        w->ww_win -= dr;
        !            62:        for (i = w->ww_w.t; i < w->ww_w.b; i++)
        !            63:                w->ww_win[i] -= dc;
        !            64:        if (w->ww_fmap != 0) {
        !            65:                w->ww_fmap -= dr;
        !            66:                for (i = w->ww_w.t; i < w->ww_w.b; i++)
        !            67:                        w->ww_fmap[i] -= dc;
        !            68:        }
        !            69:        w->ww_nvis -= dr;
        !            70:        for (i = w->ww_i.t; i < w->ww_i.b; i++) {
        !            71:                register j = w->ww_i.l;
        !            72:                register char *win = &w->ww_win[i][j];
        !            73:                register char *smap = &wwsmap[i][j];
        !            74:                int nvis = 0;
        !            75: 
        !            76:                for (; j < w->ww_i.r; j++, win++, smap++)
        !            77:                        if (*win == 0 && *smap == w->ww_index)
        !            78:                                nvis++;
        !            79:                w->ww_nvis[i] = nvis;
        !            80:        }
        !            81:        w->ww_buf -= dr;
        !            82:        for (i = w->ww_b.t; i < w->ww_b.b; i++)
        !            83:                w->ww_buf[i] -= dc;
        !            84: }

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