/*
* delwin --
* Delete a window and release it back to the system.
*/
int
delwin(WINDOW *win)
{
WINDOW *wp, *np;
struct __winlist *wl, *pwl;
SCREEN *screen;
#ifdef DEBUG
__CTRACE(__CTRACE_WINDOW, "delwin(%p)\n", win);
#endif
if (win == NULL)
return (OK);
/*
* Free any storage used by non-spacing characters in the window.
*/
#ifdef HAVE_WCHAR
__cursesi_win_free_nsp(win);
#endif
if (win->orig == NULL) {
/*
* If we are the original window, delete the space for all
* the subwindows and the window space.
*/
free(win->wspace);
wp = win->nextp;
while (wp != win) {
np = wp->nextp;
delwin(wp);
wp = np;
}
/* Remove ourselves from the list of windows on the screen. */
pwl = NULL;
screen = win->screen;
for (wl = screen->winlistp; wl; pwl = wl, wl = wl->nextp) {
if (wl->winp != win)
continue;
if (pwl != NULL)
pwl->nextp = wl->nextp;
else
screen->winlistp = wl->nextp;
free(wl);
break;
}
} else {
/*
* If we are a subwindow, take ourselves out of the list.
* NOTE: if we are a subwindow, the minimum list is orig
* followed by this subwindow, so there are always at least
* two windows in the list.
*/
for (wp = win->nextp; wp->nextp != win; wp = wp->nextp)
continue;
wp->nextp = win->nextp;
}
free(win->lspace);
free(win->alines);
if (win == _cursesi_screen->curscr)
_cursesi_screen->curscr = NULL;
if (win == _cursesi_screen->stdscr)
_cursesi_screen->stdscr = NULL;
if (win == _cursesi_screen->__virtscr)
_cursesi_screen->__virtscr = NULL;
if (win->fp)
fclose(win->fp);
free(win);
return (OK);
}
/*
* __resizewin --
* Resize the given window.
*/
static int
__resizewin(WINDOW *win, int nlines, int ncols)
{
__LINE *lp, *olp, **newlines, *newlspace;
__LDATA *sp;
__LDATA *newwspace;
int i, j;
int y, x;
WINDOW *swin;
#ifdef DEBUG
__CTRACE(__CTRACE_WINDOW, "resize: (%p, %d, %d)\n", win, nlines, ncols);
__CTRACE(__CTRACE_WINDOW, "resize: win->wattr = %08x\n", win->wattr);
__CTRACE(__CTRACE_WINDOW, "resize: win->flags = %#.4x\n", win->flags);
__CTRACE(__CTRACE_WINDOW, "resize: win->maxy = %d\n", win->maxy);
__CTRACE(__CTRACE_WINDOW, "resize: win->maxx = %d\n", win->maxx);
__CTRACE(__CTRACE_WINDOW, "resize: win->begy = %d\n", win->begy);
__CTRACE(__CTRACE_WINDOW, "resize: win->begx = %d\n", win->begx);
__CTRACE(__CTRACE_WINDOW, "resize: win->scr_t = %d\n", win->scr_t);
__CTRACE(__CTRACE_WINDOW, "resize: win->scr_b = %d\n", win->scr_b);
#endif
/*
* free up any non-spacing storage before we lose the
* pointers...
*/
#ifdef HAVE_WCHAR
__cursesi_win_free_nsp(win);
#endif
if (nlines <= 0 || ncols <= 0)
nlines = ncols = 0;
else {
/* Reallocate line pointer array and line space. */
newlines = realloc(win->alines, nlines * sizeof(__LINE *));
if (newlines == NULL)
return ERR;
win->alines = newlines;
newlspace = realloc(win->lspace, nlines * sizeof(__LINE));
if (newlspace == NULL)
return ERR;
win->lspace = newlspace;
}
/* Don't allocate window and line space if it's a subwindow */
if (win->orig == NULL) {
/*
* Allocate window space in one chunk.
*/
if (ncols != 0) {
newwspace = realloc(win->wspace,
ncols * nlines * sizeof(__LDATA));
if (newwspace == NULL)
return ERR;
win->wspace = newwspace;
}
/*
* Point line pointers to line space, and lines themselves into
* window space.
*/
for (lp = win->lspace, i = 0; i < nlines; i++, lp++) {
win->alines[i] = lp;
lp->line = &win->wspace[i * ncols];
#ifdef DEBUG
lp->sentinel = SENTINEL_VALUE;
#endif
lp->firstchp = &lp->firstch;
lp->lastchp = &lp->lastch;
lp->firstch = 0;
lp->lastch = ncols - 1;
lp->flags = __ISDIRTY;
}
} else {
win->ch_off = win->begx - win->orig->begx;
/* Point line pointers to line space. */
for (lp = win->lspace, i = 0; i < nlines; i++, lp++) {
win->alines[i] = lp;
olp = win->orig->alines[i + win->begy - win->orig->begy];
lp->line = &olp->line[win->ch_off];
#ifdef DEBUG
lp->sentinel = SENTINEL_VALUE;
#endif
lp->firstchp = &olp->firstch;
lp->lastchp = &olp->lastch;
lp->flags = __ISDIRTY;
}
}
win->cury = win->curx = 0;
win->maxy = nlines;
win->maxx = ncols;
win->scr_b = win->maxy - 1;
__swflags(win);
/*
* we must zot the window contents otherwise lines may pick
* up attributes from the previous line when the window is
* made smaller. The client will redraw the window anyway
* so this is no big deal.
*/
for (i = 0; i < win->maxy; i++) {
lp = win->alines[i];
for (sp = lp->line, j = 0; j < win->maxx; j++, sp++) {
sp->attr = 0;
#ifndef HAVE_WCHAR
sp->ch = win->bch;
#else
sp->ch = ( wchar_t )btowc(( int ) win->bch );
sp->nsp = NULL;
if (_cursesi_copy_nsp(win->bnsp, sp) == ERR)
return ERR;
SET_WCOL( *sp, 1 );
#endif /* HAVE_WCHAR */
}
lp->hash = __hash((char *)(void *)lp->line,
(size_t) (ncols * __LDATASIZE));
}
#ifdef DEBUG
__CTRACE(__CTRACE_WINDOW, "resize: win->wattr = %08x\n", win->wattr);
__CTRACE(__CTRACE_WINDOW, "resize: win->flags = %#.4x\n", win->flags);
__CTRACE(__CTRACE_WINDOW, "resize: win->maxy = %d\n", win->maxy);
__CTRACE(__CTRACE_WINDOW, "resize: win->maxx = %d\n", win->maxx);
__CTRACE(__CTRACE_WINDOW, "resize: win->begy = %d\n", win->begy);
__CTRACE(__CTRACE_WINDOW, "resize: win->begx = %d\n", win->begx);
__CTRACE(__CTRACE_WINDOW, "resize: win->scr_t = %d\n", win->scr_t);
__CTRACE(__CTRACE_WINDOW, "resize: win->scr_b = %d\n", win->scr_b);
#endif
if (win->orig == NULL) {
/* bound subwindows to new size and fixup their pointers */
for (swin = win->nextp; swin != win; swin = swin->nextp) {
y = swin->reqy;
if (swin->begy > win->begy + win->maxy)
swin->begy = win->begy + win->maxy - 1;
if (swin->begy + y > win->begy + win->maxy)
y = 0;
if (y <= 0)
y += win->begy + win->maxy - swin->begy;
if (y < 1)
y = 1;
x = swin->reqx;
if (swin->begx > win->begx + win->maxx)
swin->begx = win->begx + win->maxx - 1;
if (swin->begx + x > win->begx + win->maxx)
x = 0;
if (x <= 0)
x += win->begy + win->maxx - swin->begx;
if (x < 1)
x = 1;
__resizewin(swin, y, x);
}
}
return OK;
}
