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/*
Copyright (C) 2009-2015 John W. Eaton
This file is part of Octave.
Octave is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 3 of the License, or (at your
option) any later version.
Octave is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with Octave; see the file COPYING. If not, see
<http://www.gnu.org/licenses/>.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "singleton-cleanup.h"
#include "cdisplay.h"
#include "display.h"
#include "error.h"
display_info *display_info::instance = 0;
void
display_info::init (bool query)
{
if (query)
{
int avail = 0;
const char *msg = octave_get_display_info (&ht, &wd, &dp, &rx, &ry,
&avail);
dpy_avail = avail;
if (msg)
err_msg = msg;
}
}
bool
display_info::instance_ok (bool query)
{
bool retval = true;
if (! instance)
{
instance = new display_info (query);
if (instance)
singleton_cleanup_list::add (cleanup_instance);
}
if (! instance)
{
::error ("unable to create display_info object!");
retval = false;
}
return retval;
}
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