/****************************************************************************
- * Copyright (c) 1998,1999,2000 Free Software Foundation, Inc. *
+ * Copyright (c) 1998-2007,2008 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
/****************************************************************************
* Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
* and: Eric S. Raymond <esr@snark.thyrsus.com> *
+ * and: Thomas E. Dickey 1996-on *
****************************************************************************/
/*
*/
#include <curses.priv.h>
+#include <stddef.h>
-MODULE_ID("$Id: lib_newwin.c,v 1.24 2000/04/29 18:49:51 tom Exp $")
+MODULE_ID("$Id: lib_newwin.c,v 1.51 2008/05/31 21:50:09 tom Exp $")
-void
+#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 *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;
+ }
+ }
+}
+
+NCURSES_EXPORT(int)
_nc_freewin(WINDOW *win)
{
WINDOWLIST *p, *q;
int i;
+ int result = ERR;
+
+ T((T_CALLED("_nc_freewin(%p)"), win));
if (win != 0) {
- for (p = _nc_windows, q = 0; p != 0; q = p, p = p->next) {
- if (p->win == win) {
- if (q == 0)
- _nc_windows = p->next;
- else
- q->next = p->next;
- free(p);
-
- if (!(win->_flags & _SUBWIN)) {
- for (i = 0; i <= win->_maxy; i++)
- FreeIfNeeded(win->_line[i].text);
+ if (_nc_try_global(windowlist) == 0) {
+ q = 0;
+ for (each_window(p)) {
+ if (&(p->win) == win) {
+ remove_window_from_screen(win);
+ if (q == 0)
+ _nc_windows = p->next;
+ else
+ q->next = p->next;
+
+ if (!(win->_flags & _SUBWIN)) {
+ for (i = 0; i <= win->_maxy; i++)
+ FreeIfNeeded(win->_line[i].text);
+ }
+ free(win->_line);
+ free(p);
+
+ result = OK;
+ T(("...deleted win=%p", win));
+ break;
}
- free(win->_line);
- free(win);
-
- if (win == curscr)
- curscr = 0;
- if (win == stdscr)
- stdscr = 0;
- if (win == newscr)
- newscr = 0;
-
- T(("...deleted win=%p", win));
- break;
+ q = p;
}
+ _nc_unlock_global(windowlist);
}
}
+ returnCode(result);
}
-WINDOW *
+NCURSES_EXPORT(WINDOW *)
newwin(int num_lines, int num_columns, int begy, int begx)
{
WINDOW *win;
- chtype *ptr;
+ NCURSES_CH_T *ptr;
int i;
T((T_CALLED("newwin(%d,%d,%d,%d)"), num_lines, num_columns, begy, begx));
if (num_columns == 0)
num_columns = screen_columns - begx;
- if (num_columns + begx > SP->_columns || num_lines + begy > SP->_lines_avail)
- returnWin(0);
-
if ((win = _nc_makenew(num_lines, num_columns, begy, begx, 0)) == 0)
returnWin(0);
for (i = 0; i < num_lines; i++) {
- win->_line[i].text = typeCalloc(chtype, (unsigned) num_columns);
+ win->_line[i].text = typeCalloc(NCURSES_CH_T, (unsigned) num_columns);
if (win->_line[i].text == 0) {
- _nc_freewin(win);
+ (void) _nc_freewin(win);
returnWin(0);
}
- for (ptr = win->_line[i].text; ptr < win->_line[i].text +
- num_columns;)
- *ptr++ = ' ';
+ for (ptr = win->_line[i].text;
+ ptr < win->_line[i].text + num_columns;
+ ptr++)
+ SetChar(*ptr, BLANK_TEXT, BLANK_ATTR);
}
- T(("newwin: returned window is %p", win));
-
returnWin(win);
}
-WINDOW *
+NCURSES_EXPORT(WINDOW *)
derwin(WINDOW *orig, int num_lines, int num_columns, int begy, int begx)
{
WINDOW *win;
int flags = _SUBWIN;
T((T_CALLED("derwin(%p,%d,%d,%d,%d)"), orig, num_lines, num_columns,
- begy, begx));
+ begy, begx));
/*
- ** make sure window fits inside the original one
+ * make sure window fits inside the original one
*/
if (begy < 0 || begx < 0 || orig == 0 || num_lines < 0 || num_columns < 0)
returnWin(0);
flags |= _ISPAD;
if ((win = _nc_makenew(num_lines, num_columns, orig->_begy + begy,
- orig->_begx + begx, flags)) == 0)
+ orig->_begx + begx, flags)) == 0)
returnWin(0);
win->_pary = begy;
win->_parx = begx;
- win->_attrs = orig->_attrs;
- win->_bkgd = orig->_bkgd;
+ WINDOW_ATTRS(win) = WINDOW_ATTRS(orig);
+ win->_nc_bkgd = orig->_nc_bkgd;
for (i = 0; i < num_lines; i++)
win->_line[i].text = &orig->_line[begy++].text[begx];
win->_parent = orig;
- T(("derwin: returned window is %p", win));
-
returnWin(win);
}
-WINDOW *
+NCURSES_EXPORT(WINDOW *)
subwin(WINDOW *w, int l, int c, int y, int x)
{
T((T_CALLED("subwin(%p, %d, %d, %d, %d)"), w, l, c, y, x));
- T(("parent has begy = %d, begx = %d", w->_begy, w->_begx));
+ T(("parent has begy = %ld, begx = %ld", (long) w->_begy, (long) w->_begx));
returnWin(derwin(w, l, c, y - w->_begy, x - w->_begx));
}
return (test == value && value > 0);
}
-WINDOW *
+NCURSES_EXPORT(WINDOW *)
_nc_makenew(int num_lines, int num_columns, int begy, int begx, int flags)
{
int i;
WINDOW *win;
bool is_pad = (flags & _ISPAD);
- T(("_nc_makenew(%d,%d,%d,%d)", num_lines, num_columns, begy, begx));
+ T((T_CALLED("_nc_makenew(%d,%d,%d,%d)"), num_lines, num_columns, begy, begx));
+
+ if (SP == 0)
+ returnWin(0);
if (!dimension_limit(num_lines) || !dimension_limit(num_columns))
- return 0;
+ returnWin(0);
if ((wp = typeCalloc(WINDOWLIST, 1)) == 0)
- return 0;
+ returnWin(0);
- if ((win = typeCalloc(WINDOW, 1)) == 0)
- return 0;
+ _nc_mutex_init(&(wp->mutex_use_window));
+
+ win = &(wp->win);
if ((win->_line = typeCalloc(struct ldat, ((unsigned) num_lines))) == 0) {
free(win);
- return 0;
+ returnWin(0);
}
+ _nc_lock_global(windowlist);
+
win->_curx = 0;
win->_cury = 0;
win->_maxy = num_lines - 1;
win->_yoffset = SP->_topstolen;
win->_flags = flags;
- win->_attrs = A_NORMAL;
- win->_bkgd = BLANK;
+ WINDOW_ATTRS(win) = A_NORMAL;
+ SetChar(win->_nc_bkgd, BLANK_TEXT, BLANK_ATTR);
- win->_clear = is_pad ? FALSE : (num_lines == screen_lines && num_columns
- == screen_columns);
+ win->_clear = is_pad ? FALSE : (num_lines == screen_lines
+ && num_columns == screen_columns);
win->_idlok = FALSE;
win->_idcok = TRUE;
win->_scroll = FALSE;
}
wp->next = _nc_windows;
- wp->win = win;
+ wp->screen = SP;
_nc_windows = wp;
T((T_CREATE("window %p"), win));
- return (win);
+ _nc_unlock_global(windowlist);
+ 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);
}
projects / ncurses.git / blobdiff