*/
#include <curses.priv.h>
+#include <stddef.h>
-MODULE_ID("$Id: lib_newwin.c,v 1.44 2008/01/13 00:28:13 tom Exp $")
+MODULE_ID("$Id: lib_newwin.c,v 1.52 2008/06/07 13:58:09 tom Exp $")
-static WINDOW *
+#define window_is(name) ((sp)->_##name == win)
+
+#if USE_REENTRANT
+#define remove_window(name) \
+ sp->_##name = 0
+#else
+#define remove_window(name) \
+ sp->_##name = 0; \
+ if (win == name) \
+ name = 0
+#endif
+
+static void
remove_window_from_screen(WINDOW *win)
{
- SCREEN **scan = &_nc_screen_chain;
-
- while (*scan) {
- SCREEN *sp = *scan;
- if (sp->_curscr == win) {
- sp->_curscr = 0;
-#if !USE_REENTRANT
- if (win == curscr)
- curscr = 0;
-#endif
- } else if (sp->_stdscr == win) {
- sp->_stdscr = 0;
-#if !USE_REENTRANT
- if (win == stdscr)
- stdscr = 0;
-#endif
- } else if (sp->_newscr == win) {
- sp->_newscr = 0;
-#if !USE_REENTRANT
- if (win == newscr)
- newscr = 0;
-#endif
- } else {
- scan = &(*scan)->_next_screen;
- continue;
+ SCREEN *sp;
+
+ for (each_screen(sp)) {
+ if (window_is(curscr)) {
+ remove_window(curscr);
+ break;
+ } else if (window_is(stdscr)) {
+ remove_window(stdscr);
+ break;
+ } else if (window_is(newscr)) {
+ remove_window(newscr);
+ break;
}
- break;
}
-
- return 0;
}
NCURSES_EXPORT(int)
T((T_CALLED("_nc_freewin(%p)"), win));
if (win != 0) {
- if (_nc_try_global(windowlist) == 0) {
- for (p = _nc_windows, q = 0; p != 0; q = p, p = p->next) {
+ if (_nc_try_global(curses) == 0) {
+ q = 0;
+ for (each_window(p)) {
if (&(p->win) == win) {
remove_window_from_screen(win);
if (q == 0)
T(("...deleted win=%p", win));
break;
}
+ q = p;
}
- _nc_unlock_global(windowlist);
+ _nc_unlock_global(curses);
}
}
returnCode(result);
if ((wp = typeCalloc(WINDOWLIST, 1)) == 0)
returnWin(0);
-#ifdef USE_PTHREADS
- {
- pthread_mutexattr_t recattr;
- memset(&recattr, 0, sizeof(recattr));
- pthread_mutexattr_settype(&recattr, PTHREAD_MUTEX_NORMAL);
- pthread_mutex_init(&(wp->mutex_use_window), &recattr);
- }
-#endif
-
win = &(wp->win);
if ((win->_line = typeCalloc(struct ldat, ((unsigned) num_lines))) == 0) {
returnWin(0);
}
- _nc_lock_global(windowlist);
+ _nc_lock_global(curses);
win->_curx = 0;
win->_cury = 0;
}
wp->next = _nc_windows;
+ wp->screen = SP;
_nc_windows = wp;
T((T_CREATE("window %p"), win));
- _nc_unlock_global(windowlist);
+ _nc_unlock_global(curses);
returnWin(win);
}
+
+/*
+ * wgetch() and other functions with a WINDOW* parameter may use a SCREEN*
+ * internally, and it is useful to allow those to be invoked without switching
+ * SCREEN's, e.g., for multi-threaded applications.
+ */
+NCURSES_EXPORT(SCREEN *)
+_nc_screen_of(WINDOW *win)
+{
+ SCREEN *sp = 0;
+
+ if (win != 0) {
+ WINDOWLIST *wp = (WINDOWLIST *) win;
+ sp = wp->screen;
+ }
+ return (sp);
+}