touchwin.c revision 1.21.2.1
1 /* $NetBSD: touchwin.c,v 1.21.2.1 2006/08/28 15:06:24 tron Exp $ */ 2 3 /* 4 * Copyright (c) 1981, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 #if 0 35 static char sccsid[] = "@(#)touchwin.c 8.2 (Berkeley) 5/4/94"; 36 #else 37 __RCSID("$NetBSD: touchwin.c,v 1.21.2.1 2006/08/28 15:06:24 tron Exp $"); 38 #endif 39 #endif /* not lint */ 40 41 #include "curses.h" 42 #include "curses_private.h" 43 44 /* 45 * is_linetouched -- 46 * Indicate if line has been touched or not. 47 */ 48 bool 49 is_linetouched(WINDOW *win, int line) 50 { 51 if (line > win->maxy) 52 return FALSE; 53 54 return ((win->lines[line]->flags & __ISDIRTY) != 0); 55 } 56 57 /* 58 * touchline -- 59 * Touch count lines starting at start. This is the SUS v2 compliant 60 * version. 61 */ 62 int 63 touchline(WINDOW *win, int start, int count) 64 { 65 #ifdef DEBUG 66 __CTRACE("touchline: (%p, %d, %d)\n", win, start, count); 67 #endif 68 return wtouchln(win, start, count, 1); 69 } 70 71 /* 72 * wredrawln -- 73 * Mark count lines starting at start as corrupted. Implemented using 74 * wtouchln(). 75 */ 76 int wredrawln(WINDOW *win, int start, int count) 77 { 78 #ifdef DEBUG 79 __CTRACE("wredrawln: (%p, %d, %d)\n", win, start, count); 80 #endif 81 return wtouchln(win, start, count, 1); 82 } 83 84 /* 85 * is_wintouched -- 86 * Check if the window has been touched. 87 */ 88 bool 89 is_wintouched(WINDOW *win) 90 { 91 int y, maxy; 92 93 maxy = win->maxy; 94 for (y = 0; y < maxy; y++) { 95 if (is_linetouched(win, y) == TRUE) 96 return TRUE; 97 } 98 99 return FALSE; 100 } 101 102 /* 103 * touchwin -- 104 * Make it look like the whole window has been changed. 105 */ 106 int 107 touchwin(WINDOW *win) 108 { 109 #ifdef DEBUG 110 __CTRACE("touchwin: (%p)\n", win); 111 #endif 112 return wtouchln(win, 0, win->maxy, 1); 113 } 114 115 /* 116 * redrawwin -- 117 * Mark entire window as corrupted. Implemented using wtouchln(). 118 */ 119 int 120 redrawwin(WINDOW *win) 121 { 122 #ifdef DEBUG 123 __CTRACE("redrawwin: (%p)\n", win); 124 #endif 125 return wtouchln(win, 0, win->maxy, 1); 126 } 127 128 /* 129 * untouchwin -- 130 * Make it look like the window has not been changed. 131 */ 132 int 133 untouchwin(WINDOW *win) 134 { 135 #ifdef DEBUG 136 __CTRACE("untouchwin: (%p)\n", win); 137 #endif 138 return wtouchln(win, 0, win->maxy, 0); 139 } 140 141 /* 142 * wtouchln -- 143 * If changed is 1 then touch n lines starting at line. If changed 144 * is 0 then mark the lines as unchanged. 145 */ 146 int 147 wtouchln(WINDOW *win, int line, int n, int changed) 148 { 149 int y; 150 __LINE *wlp; 151 152 #ifdef DEBUG 153 __CTRACE("wtouchln: (%p) %d, %d, %d\n", win, line, n, changed); 154 #endif 155 if (line + n > win->maxy) 156 line = win->maxy - n; 157 for (y = line; y < line + n; y++) { 158 if (changed == 1) 159 __touchline(win, y, 0, (int) win->maxx - 1); 160 else { 161 wlp = win->lines[y]; 162 if (*wlp->firstchp >= win->ch_off && 163 *wlp->firstchp < win->maxx + win->ch_off) 164 *wlp->firstchp = win->maxx + win->ch_off; 165 if (*wlp->lastchp >= win->ch_off && 166 *wlp->lastchp < win->maxx + win->ch_off) 167 *wlp->lastchp = win->ch_off; 168 wlp->flags &= ~__ISDIRTY; 169 } 170 } 171 172 return OK; 173 } 174 175 int 176 __touchwin(WINDOW *win) 177 { 178 int y, maxy; 179 180 #ifdef DEBUG 181 __CTRACE("__touchwin: (%p)\n", win); 182 #endif 183 maxy = win->maxy; 184 for (y = 0; y < maxy; y++) 185 __touchline(win, y, 0, (int) win->maxx - 1); 186 return (OK); 187 } 188 189 int 190 __touchline(WINDOW *win, int y, int sx, int ex) 191 { 192 #ifdef DEBUG 193 __CTRACE("__touchline: (%p, %d, %d, %d)\n", win, y, sx, ex); 194 __CTRACE("__touchline: first = %d, last = %d\n", 195 *win->lines[y]->firstchp, *win->lines[y]->lastchp); 196 #endif 197 sx += win->ch_off; 198 ex += win->ch_off; 199 if (!(win->lines[y]->flags & __ISDIRTY)) 200 win->lines[y]->flags |= __ISDIRTY; 201 /* firstchp/lastchp are shared between parent window and sub-window. */ 202 if (*win->lines[y]->firstchp > sx) 203 *win->lines[y]->firstchp = sx; 204 if (*win->lines[y]->lastchp < ex) 205 *win->lines[y]->lastchp = ex; 206 #ifdef DEBUG 207 __CTRACE("__touchline: first = %d, last = %d\n", 208 *win->lines[y]->firstchp, *win->lines[y]->lastchp); 209 #endif 210 return (OK); 211 } 212
Indexes created Sat Sep 20 22:09:52 GMT 2025