/*      @(#)cmd1.c      8.1 (Berkeley) 6/6/93   */
/*      $NetBSD: cmd1.c,v 1.7 2003/08/07 11:17:22 agc Exp $     */

/*
 * Copyright (c) 1983, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Edward Wang at The University of California, Berkeley.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include "defs.h"
#include "char.h"

void
c_window(void)
{
        int col, row, xcol, xrow;
        int id;

        if ((id = findid()) < 0)
                return;
        if (!terse)
                wwputs("New window (upper left corner): ", cmdwin);
        col = 0;
        row = 1;
        wwadd(boxwin, framewin->ww_back);
        for (;;) {
                wwbox(boxwin, row - 1, col - 1, 3, 3);
                wwsetcursor(row, col);
                while (wwpeekc() < 0)
                        wwiomux();
                switch (getpos(&row, &col, row > 1, 0,
                        wwnrow - 1, wwncol - 1)) {
                case 3:
                        wwunbox(boxwin);
                        wwdelete(boxwin);
                        return;
                case 2:
                        wwunbox(boxwin);
                        break;
                case 1:
                        wwunbox(boxwin);
                case 0:
                        continue;
                }
                break;
        }
        if (!terse)
                wwputs("\nNew window (lower right corner): ", cmdwin);
        xcol = col;
        xrow = row;
        for (;;) {
                wwbox(boxwin, row - 1, col - 1,
                        xrow - row + 3, xcol - col + 3);
                wwsetcursor(xrow, xcol);
                while (wwpeekc() < 0)
                        wwiomux();
                switch (getpos(&xrow, &xcol, row, col, wwnrow - 1, wwncol - 1))
                {
                case 3:
                        wwunbox(boxwin);
                        wwdelete(boxwin);
                        return;
                case 2:
                        wwunbox(boxwin);
                        break;
                case 1:
                        wwunbox(boxwin);
                case 0:
                        continue;
                }
                break;
        }
        wwdelete(boxwin);
        if (!terse)
                wwputc('\n', cmdwin);
        wwcurtowin(cmdwin);
        (void) openwin(id, row, col, xrow-row+1, xcol-col+1, default_nline,
            (char *) 0, WWT_PTY, WWU_HASFRAME, default_shellfile,
            default_shell);
}

int
getpos(int *row, int *col, int minrow, int mincol, int maxrow, int maxcol)
{
        static int scount;
        int count;
        int c;
        int oldrow = *row, oldcol = *col;

        while ((c = wwgetc()) >= 0) {
                switch (c) {
                case '0': case '1': case '2': case '3': case '4':
                case '5': case '6': case '7': case '8': case '9':
                        scount = scount * 10 + c - '0';
                        continue;
                }
                count = scount ? scount : 1;
                scount = 0;
                switch (c) {
                case 'h':
                        if ((*col -= count) < mincol)
                                *col = mincol;
                        break;
                case 'H':
                        *col = mincol;
                        break;
                case 'l':
                        if ((*col += count) > maxcol)
                                *col = maxcol;
                        break;
                case 'L':
                        *col = maxcol;
                        break;
                case 'j':
                        if ((*row += count) > maxrow)
                                *row = maxrow;
                        break;
                case 'J':
                        *row = maxrow;
                        break;
                case 'k':
                        if ((*row -= count) < minrow)
                                *row = minrow;
                        break;
                case 'K':
                        *row = minrow;
                        break;
                case ctrl('['):
                        if (!terse)
                                wwputs("\nCancelled.  ", cmdwin);
                        return 3;
                case '\r':
                        return 2;
                default:
                        if (!terse)
                                wwputs("\nType [hjklHJKL] to move, return to enter position, escape to cancel.", cmdwin);
                        wwbell();
                }
        }
        return oldrow != *row || oldcol != *col;
}