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////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2007-2021 The Octave Project Developers
//
// See the file COPYRIGHT.md in the top-level directory of this
// distribution or <https://octave.org/copyright/>.
//
// 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
// <https://www.gnu.org/licenses/>.
//
////////////////////////////////////////////////////////////////////////
#if defined (HAVE_CONFIG_H)
# include "config.h"
#endif
#include "error.h"
#include "graphics-toolkit.h"
#include "gtk-manager.h"
#include "ovl.h"
#include "parse.h"
namespace octave
{
graphics_toolkit
gtk_manager::get_toolkit (void) const
{
graphics_toolkit retval;
if (dtk.empty ())
error ("no graphics toolkits are available!");
auto pl = loaded_toolkits.find (dtk);
if (pl == loaded_toolkits.end ())
{
auto pa = available_toolkits.find (dtk);
if (pa == available_toolkits.end ())
error ("default graphics toolkit '%s' is not available!",
dtk.c_str ());
octave_value_list args;
args(0) = dtk;
feval ("graphics_toolkit", args);
pl = loaded_toolkits.find (dtk);
if (pl == loaded_toolkits.end ())
error ("failed to load %s graphics toolkit", dtk.c_str ());
retval = pl->second;
}
else
retval = pl->second;
return retval;
}
void
gtk_manager::register_toolkit (const std::string& name)
{
if (dtk.empty () || name == "qt"
|| (name == "fltk"
&& available_toolkits.find ("qt") == available_toolkits.end ()))
dtk = name;
available_toolkits.insert (name);
}
void
gtk_manager::unregister_toolkit (const std::string& name)
{
available_toolkits.erase (name);
if (dtk == name)
{
if (available_toolkits.empty ())
dtk.clear ();
else
{
auto pa = available_toolkits.cbegin ();
dtk = *pa++;
while (pa != available_toolkits.cend ())
{
std::string tk_name = *pa++;
if (tk_name == "qt"
|| (tk_name == "fltk"
&& (available_toolkits.find ("qt")
== available_toolkits.cend ())))
dtk = tk_name;
}
}
}
}
}
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