int btn_dialog(WINDOW *main_window, const char *msg, int btn_num, ...)
{
va_list ap;
char *btn;
int btns_width = 0;
int msg_lines = 0;
int msg_width = 0;
int total_width;
int win_rows = 0;
WINDOW *win;
WINDOW *msg_win;
WINDOW *menu_win;
MENU *menu;
ITEM *btns[btn_num+1];
int i, x, y;
int res = -1;
va_start(ap, btn_num);
for (i = 0; i < btn_num; i++) {
btn = va_arg(ap, char *);
btns[i] = new_item(btn, "");
btns_width += strlen(btn)+1;
}
va_end(ap);
btns[btn_num] = NULL;
/* find the widest line of msg: */
msg_lines = get_line_no(msg);
for (i = 0; i < msg_lines; i++) {
const char *line = get_line(msg, i);
int len = get_line_length(line);
if (msg_width < len)
msg_width = len;
}
total_width = max(msg_width, btns_width);
/* place dialog in middle of screen */
y = (LINES-(msg_lines+4))/2;
x = (COLS-(total_width+4))/2;
/* create the windows */
if (btn_num > 0)
win_rows = msg_lines+4;
else
win_rows = msg_lines+2;
win = newwin(win_rows, total_width+4, y, x);
keypad(win, TRUE);
menu_win = derwin(win, 1, btns_width, win_rows-2,
1+(total_width+2-btns_width)/2);
menu = new_menu(btns);
msg_win = derwin(win, win_rows-2, msg_width, 1,
1+(total_width+2-msg_width)/2);
set_menu_fore(menu, attributes[DIALOG_MENU_FORE]);
set_menu_back(menu, attributes[DIALOG_MENU_BACK]);
wattrset(win, attributes[DIALOG_BOX]);
box(win, 0, 0);
/* print message */
wattrset(msg_win, attributes[DIALOG_TEXT]);
fill_window(msg_win, msg);
set_menu_win(menu, win);
set_menu_sub(menu, menu_win);
set_menu_format(menu, 1, btn_num);
menu_opts_off(menu, O_SHOWDESC);
menu_opts_off(menu, O_SHOWMATCH);
menu_opts_on(menu, O_ONEVALUE);
menu_opts_on(menu, O_NONCYCLIC);
set_menu_mark(menu, "");
post_menu(menu);
touchwin(win);
refresh_all_windows(main_window);
while ((res = wgetch(win))) {
switch (res) {
case KEY_LEFT:
menu_driver(menu, REQ_LEFT_ITEM);
break;
case KEY_RIGHT:
menu_driver(menu, REQ_RIGHT_ITEM);
break;
case 10: /* ENTER */
case 27: /* ESCAPE */
case ' ':
case KEY_F(F_BACK):
case KEY_F(F_EXIT):
break;
}
touchwin(win);
refresh_all_windows(main_window);
if (res == 10 || res == ' ') {
res = item_index(current_item(menu));
break;
} else if (res == 27 || res == KEY_F(F_BACK) ||
res == KEY_F(F_EXIT)) {
res = KEY_EXIT;
break;
}
}
unpost_menu(menu);
free_menu(menu);
for (i = 0; i < btn_num; i++)
free_item(btns[i]);
delwin(win);
return res;
}
static VALUE rbncurs_c_menu_opts_on(VALUE rb_menu, VALUE opts)
{
MENU *menu = get_menu(rb_menu);
return INT2NUM(menu_opts_on(menu, NUM2INT(opts)));
}
