/* * Copyright (c) 1983 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 are permitted provided * that: (1) source distributions retain this entire copyright notice and * comment, and (2) distributions including binaries display the following * acknowledgement: ``This product includes software developed by the * University of California, Berkeley and its contributors'' in the * documentation or other materials provided with the distribution and in * all advertising materials mentioning features or use of this software. * 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 ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. */ #ifndef lint static char sccsid[] = "@(#)cmd5.c 3.18 (Berkeley) 6/6/90"; #endif /* not lint */ #include "defs.h" /* * Window movement. */ c_move(w) register struct ww *w; { int col, row; int mincol, minrow; int maxcol, maxrow; int curcol, currow; if (!terse) wwputs("New window position: ", cmdwin); col = w->ww_w.l; row = w->ww_w.t; wwadd(boxwin, framewin->ww_back); for (;;) { wwbox(boxwin, row - 1, col - 1, w->ww_w.nr + 2, w->ww_w.nc + 2); getminmax(row, w->ww_w.nr, 1, wwnrow, &currow, &minrow, &maxrow); getminmax(col, w->ww_w.nc, 0, wwncol, &curcol, &mincol, &maxcol); wwsetcursor(currow, curcol); while (wwpeekc() < 0) wwiomux(); switch (getpos(&row, &col, minrow, mincol, maxrow, maxcol)) { 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); movewin(w, row, col); } movewin(w, row, col) register struct ww *w; { struct ww *back = w->ww_back; w->ww_alt.t = w->ww_w.t; w->ww_alt.l = w->ww_w.l; wwdelete(w); wwmove(w, row, col); wwadd(w, back); reframe(); } /* * Weird stufff, don't ask. */ getminmax(x, n, a, b, curx, minx, maxx) register x, n, a, b; int *curx, *minx, *maxx; { if (x < 0) *curx = x + n - 1; else *curx = x; if (x <= a) *minx = 1 - n; else if (x <= b - n) *minx = a; else *minx = b - n; if (x >= b - n) *maxx = b - 1; else if (x >= a) *maxx = b - n; else *maxx = a; }