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Annotation of 43BSDReno/usr.bin/window/wwcursor.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[] = "@(#)wwcursor.c 3.12 (Berkeley) 6/6/90";
        !            25: #endif /* not lint */
        !            26: 
        !            27: #include "ww.h"
        !            28: 
        !            29: wwcursor(w, on)
        !            30: register struct ww *w;
        !            31: {
        !            32:        register char *win;
        !            33: 
        !            34:        if (on) {
        !            35:                if (w->ww_hascursor)
        !            36:                        return;
        !            37:                w->ww_hascursor = 1;
        !            38:        } else {
        !            39:                if (!w->ww_hascursor)
        !            40:                        return;
        !            41:                w->ww_hascursor = 0;
        !            42:        }
        !            43:        if (wwcursormodes != 0) {
        !            44:                win = &w->ww_win[w->ww_cur.r][w->ww_cur.c];
        !            45:                *win ^= wwcursormodes;
        !            46:                if (w->ww_cur.r < w->ww_i.t || w->ww_cur.r >= w->ww_i.b
        !            47:                    || w->ww_cur.c < w->ww_i.l || w->ww_cur.c >= w->ww_i.r)
        !            48:                        return;
        !            49:                if (wwsmap[w->ww_cur.r][w->ww_cur.c] == w->ww_index) {
        !            50:                        if (*win == 0)
        !            51:                                w->ww_nvis[w->ww_cur.r]++;
        !            52:                        else if (*win == wwcursormodes)
        !            53:                                w->ww_nvis[w->ww_cur.r]--;
        !            54:                        wwns[w->ww_cur.r][w->ww_cur.c].c_m ^= wwcursormodes;
        !            55:                        wwtouched[w->ww_cur.r] |= WWU_TOUCHED;
        !            56:                }
        !            57:        }
        !            58: }
        !            59: 
        !            60: wwsetcursormodes(new)
        !            61: register new;
        !            62: {
        !            63:        register i;
        !            64:        register struct ww *w;
        !            65:        register old = wwcursormodes;
        !            66: 
        !            67:        new &= wwavailmodes;
        !            68:        if (new == wwcursormodes)
        !            69:                return;
        !            70:        for (i = 0; i < NWW; i++)
        !            71:                if (wwindex[i] != 0 && (w = wwindex[i])->ww_hascursor) {
        !            72:                        wwcursor(w, 0);
        !            73:                        wwcursormodes = new;
        !            74:                        wwcursor(w, 1);
        !            75:                        wwcursormodes = old;
        !            76:                }
        !            77:        wwcursormodes = new;
        !            78: }

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