51 lines
1.0 KiB
C
51 lines
1.0 KiB
C
|
|
/* This work is copyrighted. See COPYRIGHT.OLD & COPYRIGHT.NEW for *
|
|
* details. If they are missing then this copy is in violation of *
|
|
* the copyright conditions. */
|
|
|
|
/*
|
|
** lib_erase.c
|
|
**
|
|
** The routine werase().
|
|
**
|
|
*/
|
|
|
|
#include "curses.priv.h"
|
|
#include <nterm.h>
|
|
|
|
#define BLANK ' '
|
|
|
|
int werase(WINDOW *win)
|
|
{
|
|
int y;
|
|
chtype *sp, *end, *start, *maxx = NULL;
|
|
int minx;
|
|
|
|
T(("werase(%x) called", win));
|
|
|
|
for (y = win->_regtop; y <= win->_regbottom; y++) {
|
|
minx = _NOCHANGE;
|
|
start = win->_line[y];
|
|
end = &start[win->_maxx];
|
|
|
|
maxx = start;
|
|
for (sp = start; sp <= end; sp++) {
|
|
maxx = sp;
|
|
if (minx == _NOCHANGE)
|
|
minx = sp - start;
|
|
*sp = BLANK;
|
|
}
|
|
|
|
if (minx != _NOCHANGE) {
|
|
if (win->_firstchar[y] > minx ||
|
|
win->_firstchar[y] == _NOCHANGE)
|
|
win->_firstchar[y] = minx;
|
|
|
|
if (win->_lastchar[y] < maxx - win->_line[y])
|
|
win->_lastchar[y] = maxx - win->_line[y];
|
|
}
|
|
}
|
|
win->_curx = win->_cury = 0;
|
|
return OK;
|
|
}
|