1 /**************************************************************************** 2 * Copyright 2020 Thomas E. Dickey * 3 * Copyright 1998-2016,2017 Free Software Foundation, Inc. * 4 * * 5 * Permission is hereby granted, free of charge, to any person obtaining a * 6 * copy of this software and associated documentation files (the * 7 * "Software"), to deal in the Software without restriction, including * 8 * without limitation the rights to use, copy, modify, merge, publish, * 9 * distribute, distribute with modifications, sublicense, and/or sell * 10 * copies of the Software, and to permit persons to whom the Software is * 11 * furnished to do so, subject to the following conditions: * 12 * * 13 * The above copyright notice and this permission notice shall be included * 14 * in all copies or substantial portions of the Software. * 15 * * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 19 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 22 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 23 * * 24 * Except as contained in this notice, the name(s) of the above copyright * 25 * holders shall not be used in advertising or otherwise to promote the * 26 * sale, use or other dealings in this Software without prior written * 27 * authorization. * 28 ****************************************************************************/ 29 30 /**************************************************************************** 31 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 * 32 * and: Eric S. Raymond <esr@snark.thyrsus.com> * 33 ****************************************************************************/ 34 35 /* 36 ** lib_touch.c 37 ** 38 ** The routines untouchwin(), 39 ** wtouchln(), 40 ** is_linetouched() 41 ** is_wintouched(). 42 ** 43 */ 44 45 #include <curses.priv.h> 46 47 MODULE_ID("$Id: lib_touch.c,v 1.16 2020/02/02 23:34:34 tom Exp $") 48 49 #undef is_linetouched 50 51 NCURSES_EXPORT(bool) 52 is_linetouched(WINDOW *win, int line) 53 { 54 T((T_CALLED("is_linetouched(%p,%d)"), (void *) win, line)); 55 56 /* XSI doesn't define any error, and gcc ultimately made it impossible */ 57 if (!win || (line > win->_maxy) || (line < 0)) { 58 returnCode(FALSE); 59 } 60 61 returnCode(win->_line[line].firstchar != _NOCHANGE ? TRUE : FALSE); 62 } 63 64 NCURSES_EXPORT(bool) 65 is_wintouched(WINDOW *win) 66 { 67 T((T_CALLED("is_wintouched(%p)"), (void *) win)); 68 69 if (win) { 70 int i; 71 72 for (i = 0; i <= win->_maxy; i++) 73 if (win->_line[i].firstchar != _NOCHANGE) 74 returnCode(TRUE); 75 } 76 returnCode(FALSE); 77 } 78 79 NCURSES_EXPORT(int) 80 wtouchln(WINDOW *win, int y, int n, int changed) 81 { 82 int i; 83 84 T((T_CALLED("wtouchln(%p,%d,%d,%d)"), (void *) win, y, n, changed)); 85 86 if (!win || (n < 0) || (y < 0) || (y > win->_maxy)) 87 returnCode(ERR); 88 89 for (i = y; i < y + n; i++) { 90 if (i > win->_maxy) 91 break; 92 win->_line[i].firstchar = (NCURSES_SIZE_T) (changed ? 0 : _NOCHANGE); 93 win->_line[i].lastchar = (NCURSES_SIZE_T) (changed 94 ? win->_maxx 95 : _NOCHANGE); 96 } 97 returnCode(OK); 98 } 99