1 /* $OpenBSD: lib_touch.c,v 1.4 2023/10/17 09:52:09 nicm Exp $ */ 2 3 /**************************************************************************** 4 * Copyright 2020 Thomas E. Dickey * 5 * Copyright 1998-2016,2017 Free Software Foundation, Inc. * 6 * * 7 * Permission is hereby granted, free of charge, to any person obtaining a * 8 * copy of this software and associated documentation files (the * 9 * "Software"), to deal in the Software without restriction, including * 10 * without limitation the rights to use, copy, modify, merge, publish, * 11 * distribute, distribute with modifications, sublicense, and/or sell * 12 * copies of the Software, and to permit persons to whom the Software is * 13 * furnished to do so, subject to the following conditions: * 14 * * 15 * The above copyright notice and this permission notice shall be included * 16 * in all copies or substantial portions of the Software. * 17 * * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 21 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 24 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 25 * * 26 * Except as contained in this notice, the name(s) of the above copyright * 27 * holders shall not be used in advertising or otherwise to promote the * 28 * sale, use or other dealings in this Software without prior written * 29 * authorization. * 30 ****************************************************************************/ 31 32 /**************************************************************************** 33 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 * 34 * and: Eric S. Raymond <esr@snark.thyrsus.com> * 35 ****************************************************************************/ 36 37 /* 38 ** lib_touch.c 39 ** 40 ** The routines untouchwin(), 41 ** wtouchln(), 42 ** is_linetouched() 43 ** is_wintouched(). 44 ** 45 */ 46 47 #include <curses.priv.h> 48 49 MODULE_ID("$Id: lib_touch.c,v 1.4 2023/10/17 09:52:09 nicm Exp $") 50 51 #undef is_linetouched 52 53 NCURSES_EXPORT(bool) 54 is_linetouched(WINDOW *win, int line) 55 { 56 T((T_CALLED("is_linetouched(%p,%d)"), (void *) win, line)); 57 58 /* XSI doesn't define any error, and gcc ultimately made it impossible */ 59 if (!win || (line > win->_maxy) || (line < 0)) { 60 returnCode(FALSE); 61 } 62 63 returnCode(win->_line[line].firstchar != _NOCHANGE ? TRUE : FALSE); 64 } 65 66 NCURSES_EXPORT(bool) 67 is_wintouched(WINDOW *win) 68 { 69 T((T_CALLED("is_wintouched(%p)"), (void *) win)); 70 71 if (win) { 72 int i; 73 74 for (i = 0; i <= win->_maxy; i++) 75 if (win->_line[i].firstchar != _NOCHANGE) 76 returnCode(TRUE); 77 } 78 returnCode(FALSE); 79 } 80 81 NCURSES_EXPORT(int) 82 wtouchln(WINDOW *win, int y, int n, int changed) 83 { 84 int i; 85 86 T((T_CALLED("wtouchln(%p,%d,%d,%d)"), (void *) win, y, n, changed)); 87 88 if (!win || (n < 0) || (y < 0) || (y > win->_maxy)) 89 returnCode(ERR); 90 91 for (i = y; i < y + n; i++) { 92 if (i > win->_maxy) 93 break; 94 win->_line[i].firstchar = (NCURSES_SIZE_T) (changed ? 0 : _NOCHANGE); 95 win->_line[i].lastchar = (NCURSES_SIZE_T) (changed 96 ? win->_maxx 97 : _NOCHANGE); 98 } 99 returnCode(OK); 100 } 101