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/* 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_refresh.c
*
* The routines wredrawln(), wrefresh() and wnoutrefresh().
*
*/
#include "curses.priv.h"
int wredrawln(WINDOW *win, int beg, int num)
{
T(("wredrawln(%x,%d,%d) called", win, beg, num));
touchline(win, beg, num);
wrefresh(win);
return OK;
}
int wrefresh(WINDOW *win)
{
T(("wrefresh(%x) called", win));
if (win == curscr)
curscr->_clear = TRUE;
else
wnoutrefresh(win);
return(doupdate());
}
int wnoutrefresh(WINDOW *win)
{
int i, j;
int begx = win->_begx;
int begy = win->_begy;
int m, n;
T(("wnoutrefresh(%x) called", win));
/*
* This function will break badly if we try to refresh a pad.
*/
if ((win == 0)
|| (win->_flags & _ISPAD))
return(ERR);
/*
* If 'newscr' has a different background than the window that we're
* trying to refresh, we'll have to copy the whole thing.
*/
if (win->_bkgd != newscr->_bkgd) {
touchwin(win);
newscr->_bkgd = win->_bkgd;
}
newscr->_attrs = win->_attrs;
win->_flags &= ~_HASMOVED;
for (i = 0, m = begy; i <= win->_maxy; i++, m++) {
if (win->_firstchar[i] != _NOCHANGE) {
j = win->_firstchar[i];
n = j + begx;
for (; j <= win->_lastchar[i]; j++, n++) {
if (win->_line[i][j] != newscr->_line[m][n]) {
newscr->_line[m][n] = win->_line[i][j];
if (newscr->_firstchar[m] == _NOCHANGE)
newscr->_firstchar[m] = newscr->_lastchar[m] = n;
else if (n < newscr->_firstchar[m])
newscr->_firstchar[m] = n;
else if (n > newscr->_lastchar[m])
newscr->_lastchar[m] = n;
}
}
}
win->_firstchar[i] = win->_lastchar[i] = _NOCHANGE;
}
if (win->_clear) {
win->_clear = FALSE;
newscr->_clear = TRUE;
}
if (! win->_leave) {
newscr->_cury = win->_cury + win->_begy;
newscr->_curx = win->_curx + win->_begx;
}
return(OK);
}
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