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Annotation of 43BSDTahoe/ucb/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:  * Redistribution and use in source and binary forms are permitted
        !             6:  * provided that the above copyright notice and this paragraph are
        !             7:  * duplicated in all such forms and that any documentation,
        !             8:  * advertising materials, and other materials related to such
        !             9:  * distribution and use acknowledge that the software was developed
        !            10:  * by the University of California, Berkeley.  The name of the
        !            11:  * University may not be used to endorse or promote products derived
        !            12:  * from this software without specific prior written permission.
        !            13:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            14:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            15:  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            16:  */
        !            17: 
        !            18: #ifndef lint
        !            19: static char sccsid[] = "@(#)cmd5.c     3.16 (Berkeley) 6/29/88";
        !            20: #endif /* not lint */
        !            21: 
        !            22: #include "defs.h"
        !            23: 
        !            24: /*
        !            25:  * Window movement.
        !            26:  */
        !            27: 
        !            28: c_move(w)
        !            29: register struct ww *w;
        !            30: {
        !            31:        int col, row;
        !            32:        int mincol, minrow;
        !            33:        int maxcol, maxrow;
        !            34:        int curcol, currow;
        !            35: 
        !            36:        if (!terse)
        !            37:                wwputs("New window position: ", cmdwin);
        !            38:        col = w->ww_w.l;
        !            39:        row = w->ww_w.t;
        !            40:        wwadd(boxwin, framewin->ww_back);
        !            41:        for (;;) {
        !            42:                wwbox(boxwin, row - 1, col - 1, w->ww_w.nr + 2, w->ww_w.nc + 2);
        !            43:                getminmax(row, w->ww_w.nr, 1, wwnrow,
        !            44:                        &currow, &minrow, &maxrow);
        !            45:                getminmax(col, w->ww_w.nc, 0, wwncol,
        !            46:                        &curcol, &mincol, &maxcol);
        !            47:                wwsetcursor(currow, curcol);
        !            48:                while (wwpeekc() < 0)
        !            49:                        wwiomux();
        !            50:                switch (getpos(&row, &col, minrow, mincol, maxrow, maxcol)) {
        !            51:                case 3:
        !            52:                        wwunbox(boxwin);
        !            53:                        wwdelete(boxwin);
        !            54:                        return;
        !            55:                case 2:
        !            56:                        wwunbox(boxwin);
        !            57:                        break;
        !            58:                case 1:
        !            59:                        wwunbox(boxwin);
        !            60:                case 0:
        !            61:                        continue;
        !            62:                }
        !            63:                break;
        !            64:        }
        !            65:        wwdelete(boxwin);
        !            66:        if (!terse)
        !            67:                wwputc('\n', cmdwin);
        !            68:        wwcurtowin(cmdwin);
        !            69:        movewin(w, row, col);
        !            70: }
        !            71: 
        !            72: movewin(w, row, col)
        !            73: register struct ww *w;
        !            74: {
        !            75:        struct ww *back = w->ww_back;
        !            76: 
        !            77:        w->ww_alt.t = w->ww_w.t;
        !            78:        w->ww_alt.l = w->ww_w.l;
        !            79:        wwdelete(w);
        !            80:        wwmove(w, row, col);
        !            81:        wwadd(w, back);
        !            82:        reframe();
        !            83: }
        !            84: 
        !            85: /*
        !            86:  * Weird stufff, don't ask.
        !            87:  */
        !            88: getminmax(x, n, a, b, curx, minx, maxx)
        !            89: register x, n, a, b;
        !            90: int *curx, *minx, *maxx;
        !            91: {
        !            92:        if (x < 0)
        !            93:                *curx = x + n - 1;
        !            94:        else
        !            95:                *curx = x;
        !            96: 
        !            97:        if (x <= a)
        !            98:                *minx = 1 - n;
        !            99:        else if (x <= b - n)
        !           100:                *minx = a;
        !           101:        else
        !           102:                *minx = b - n;
        !           103: 
        !           104:        if (x >= b - n)
        !           105:                *maxx = b - 1;
        !           106:        else if (x >= a)
        !           107:                *maxx = b - n;
        !           108:        else
        !           109:                *maxx = a;
        !           110: }

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