1 /* 2 * Copyright (c) 1983, 1993 3 * The Regents of the University of California. 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 * %sccs.include.redist.c% 9 */ 10 11 #ifndef lint 12 static char sccsid[] = "@(#)wwcursor.c 8.1 (Berkeley) 06/06/93"; 13 #endif /* not lint */ 14 15 #include "ww.h" 16 17 wwcursor(w, on) 18 register struct ww *w; 19 { 20 register char *win; 21 22 if (on) { 23 if (w->ww_hascursor) 24 return; 25 w->ww_hascursor = 1; 26 } else { 27 if (!w->ww_hascursor) 28 return; 29 w->ww_hascursor = 0; 30 } 31 if (wwcursormodes != 0) { 32 win = &w->ww_win[w->ww_cur.r][w->ww_cur.c]; 33 *win ^= wwcursormodes; 34 if (w->ww_cur.r < w->ww_i.t || w->ww_cur.r >= w->ww_i.b 35 || w->ww_cur.c < w->ww_i.l || w->ww_cur.c >= w->ww_i.r) 36 return; 37 if (wwsmap[w->ww_cur.r][w->ww_cur.c] == w->ww_index) { 38 if (*win == 0) 39 w->ww_nvis[w->ww_cur.r]++; 40 else if (*win == wwcursormodes) 41 w->ww_nvis[w->ww_cur.r]--; 42 wwns[w->ww_cur.r][w->ww_cur.c].c_m ^= wwcursormodes; 43 wwtouched[w->ww_cur.r] |= WWU_TOUCHED; 44 } 45 } 46 } 47 48 wwsetcursormodes(new) 49 register new; 50 { 51 register i; 52 register struct ww *w; 53 register old = wwcursormodes; 54 55 new &= wwavailmodes; 56 if (new == wwcursormodes) 57 return; 58 for (i = 0; i < NWW; i++) 59 if (wwindex[i] != 0 && (w = wwindex[i])->ww_hascursor) { 60 wwcursor(w, 0); 61 wwcursormodes = new; 62 wwcursor(w, 1); 63 wwcursormodes = old; 64 } 65 wwcursormodes = new; 66 } 67