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/***************************************************************************
* COPYRIGHT NOTICE *
****************************************************************************
* ncurses is copyright (C) 1992-1995 *
* Zeyd M. Ben-Halim *
* zmbenhal@netcom.com *
* Eric S. Raymond *
* esr@snark.thyrsus.com *
* *
* Permission is hereby granted to reproduce and distribute ncurses *
* by any means and for any fee, whether alone or as part of a *
* larger distribution, in source or in binary form, PROVIDED *
* this notice is included with any such distribution, and is not *
* removed from any of its header files. Mention of ncurses in any *
* applications linked with it is highly appreciated. *
* *
* ncurses comes AS IS with no warranty, implied or expressed. *
* *
***************************************************************************/
/*
** lib_erase.c
**
** The routine werase().
**
*/
#include "curses.priv.h"
int werase(WINDOW *win)
{
int y;
chtype *sp, *end, *start, *maxx = NULL;
short minx;
T(("werase(%p) called", win));
for (y = 0; y <= win->_maxy; y++) {
minx = _NOCHANGE;
start = win->_line[y].text;
end = &start[win->_maxx];
maxx = start;
for (sp = start; sp <= end; sp++) {
maxx = sp;
if (minx == _NOCHANGE)
minx = sp - start;
*sp = _nc_render(win, *sp, BLANK);
}
if (minx != _NOCHANGE) {
if (win->_line[y].firstchar > minx ||
win->_line[y].firstchar == _NOCHANGE)
win->_line[y].firstchar = minx;
if (win->_line[y].lastchar < maxx - win->_line[y].text)
win->_line[y].lastchar = maxx - win->_line[y].text;
}
}
win->_curx = win->_cury = 0;
win->_flags &= ~_NEED_WRAP;
_nc_synchook(win);
return OK;
}
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