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Annotation of 43BSDReno/usr.bin/window/cmd5.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[] = "@(#)cmd5.c     3.18 (Berkeley) 6/6/90";
        !            25: #endif /* not lint */
        !            26: 
        !            27: #include "defs.h"
        !            28: 
        !            29: /*
        !            30:  * Window movement.
        !            31:  */
        !            32: 
        !            33: c_move(w)
        !            34: register struct ww *w;
        !            35: {
        !            36:        int col, row;
        !            37:        int mincol, minrow;
        !            38:        int maxcol, maxrow;
        !            39:        int curcol, currow;
        !            40: 
        !            41:        if (!terse)
        !            42:                wwputs("New window position: ", cmdwin);
        !            43:        col = w->ww_w.l;
        !            44:        row = w->ww_w.t;
        !            45:        wwadd(boxwin, framewin->ww_back);
        !            46:        for (;;) {
        !            47:                wwbox(boxwin, row - 1, col - 1, w->ww_w.nr + 2, w->ww_w.nc + 2);
        !            48:                getminmax(row, w->ww_w.nr, 1, wwnrow,
        !            49:                        &currow, &minrow, &maxrow);
        !            50:                getminmax(col, w->ww_w.nc, 0, wwncol,
        !            51:                        &curcol, &mincol, &maxcol);
        !            52:                wwsetcursor(currow, curcol);
        !            53:                while (wwpeekc() < 0)
        !            54:                        wwiomux();
        !            55:                switch (getpos(&row, &col, minrow, mincol, maxrow, maxcol)) {
        !            56:                case 3:
        !            57:                        wwunbox(boxwin);
        !            58:                        wwdelete(boxwin);
        !            59:                        return;
        !            60:                case 2:
        !            61:                        wwunbox(boxwin);
        !            62:                        break;
        !            63:                case 1:
        !            64:                        wwunbox(boxwin);
        !            65:                case 0:
        !            66:                        continue;
        !            67:                }
        !            68:                break;
        !            69:        }
        !            70:        wwdelete(boxwin);
        !            71:        if (!terse)
        !            72:                wwputc('\n', cmdwin);
        !            73:        wwcurtowin(cmdwin);
        !            74:        movewin(w, row, col);
        !            75: }
        !            76: 
        !            77: movewin(w, row, col)
        !            78: register struct ww *w;
        !            79: {
        !            80:        struct ww *back = w->ww_back;
        !            81: 
        !            82:        w->ww_alt.t = w->ww_w.t;
        !            83:        w->ww_alt.l = w->ww_w.l;
        !            84:        wwdelete(w);
        !            85:        wwmove(w, row, col);
        !            86:        wwadd(w, back);
        !            87:        reframe();
        !            88: }
        !            89: 
        !            90: /*
        !            91:  * Weird stufff, don't ask.
        !            92:  */
        !            93: getminmax(x, n, a, b, curx, minx, maxx)
        !            94: register x, n, a, b;
        !            95: int *curx, *minx, *maxx;
        !            96: {
        !            97:        if (x < 0)
        !            98:                *curx = x + n - 1;
        !            99:        else
        !           100:                *curx = x;
        !           101: 
        !           102:        if (x <= a)
        !           103:                *minx = 1 - n;
        !           104:        else if (x <= b - n)
        !           105:                *minx = a;
        !           106:        else
        !           107:                *minx = b - n;
        !           108: 
        !           109:        if (x >= b - n)
        !           110:                *maxx = b - 1;
        !           111:        else if (x >= a)
        !           112:                *maxx = b - n;
        !           113:        else
        !           114:                *maxx = a;
        !           115: }

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