/****************************************************************************
* Copyright 2020 Thomas E. Dickey *
* Copyright 1998-2016,2017 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
* "Software"), to deal in the Software without restriction, including *
* without limitation the rights to use, copy, modify, merge, publish, *
* distribute, distribute with modifications, sublicense, and/or sell *
* copies of the Software, and to permit persons to whom the Software is *
* furnished to do so, subject to the following conditions: *
* *
* The above copyright notice and this permission notice shall be included *
* in all copies or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
* *
* Except as contained in this notice, the name(s) of the above copyright *
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****************************************************************************/
/****************************************************************************
* Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
* and: Eric S. Raymond <esr@snark.thyrsus.com> *
****************************************************************************/
/*
** lib_touch.c
**
** The routines untouchwin(),
** wtouchln(),
** is_linetouched()
** is_wintouched().
**
*/
#include <curses.priv.h>
MODULE_ID("$Id: lib_touch.c,v 1.16 2020/02/02 23:34:34 tom Exp $")
#undef is_linetouched
NCURSES_EXPORT(bool)
is_linetouched(WINDOW *win, int line)
{
T((T_CALLED("is_linetouched(%p,%d)"), (void *) win, line));
/* XSI doesn't define any error, and gcc ultimately made it impossible */
if (!win || (line > win->_maxy) || (line < 0)) {
returnCode(FALSE);
}
returnCode(win->_line[line].firstchar != _NOCHANGE ? TRUE : FALSE);
}
NCURSES_EXPORT(bool)
is_wintouched(WINDOW *win)
{
T((T_CALLED("is_wintouched(%p)"), (void *) win));
if (win) {
int i;
for (i = 0; i <= win->_maxy; i++)
if (win->_line[i].firstchar != _NOCHANGE)
returnCode(TRUE);
}
returnCode(FALSE);
}
NCURSES_EXPORT(int)
wtouchln(WINDOW *win, int y, int n, int changed)
{
int i;
T((T_CALLED("wtouchln(%p,%d,%d,%d)"), (void *) win, y, n, changed));
if (!win || (n < 0) || (y < 0) || (y > win->_maxy))
returnCode(ERR);
for (i = y; i < y + n; i++) {
if (i > win->_maxy)
break;
win->_line[i].firstchar = (NCURSES_SIZE_T) (changed ? 0 : _NOCHANGE);
win->_line[i].lastchar = (NCURSES_SIZE_T) (changed
? win->_maxx
: _NOCHANGE);
}
returnCode(OK);
}
