eliminate static wrapper functions in gh_manager class This is a large but straightforward change to eliminate the remains of the singleton pattern that was used for the gh_manager class. All static functions in the gh_manager class that previously used the "instance" function to access the gh_manager object stored in the global interpreter object and then called the corresponding "do_" functions have been eliminated. The "do_" prefix has been removed from the normal member functions and all uses of the static functions (calls of the form gh_manager::X) have been replaced with a call to the member function. The gh_manager object is accessed through the interpreter object and there is a new __get_gh_manager__ convenience function defined in the intepreter-private.cc file. Additionally, instead of using the gh_manager::auto_lock class, we access the mutex variable associated with the gh_manager object and pass it to the octave::autolock constructor to manage scoped locks for the gh_manager class. The following interpreter functions are now "methods" and require the interpreter as the first argument: F__calc_dimensions__, F__fltk_check__, F__get__, F__get_frame__, F__go_axes__, F__go_delete__, F__go_execute_callback__, F__go_figure__, F__go_figure_handles__, F__go_handles__, F__go_hggroup__, F__go_image__, F__go_light__, F__go_line__, F__go_patch__, F__go_post_callback__, F__go_surface__, F__go_text__, F__go_uibuttongroup__, F__go_uicontextmenu__, F__go_uicontrol__, F__go_uimenu__, F__go_uipanel__, F__go_uipushtool__, F__go_uitable__, F__go_uitoggletool__, F__go_uitoolbar__, F__image_pixel_size__, F__show_figure__, F__shutdown_qt__, F__update_normals__, F__zoom__, Faddlistener, Faddproperty, Fdellistener, Fdrawnow, Fget, Fishghandle, Fkbhit, Fpause, Freset, Fset, and Fwaitfor. Files affected: BaseControl.cc, ButtonControl.cc, ButtonGroup.cc, Canvas.cc, Container.cc, ContextMenu.cc, Figure.cc, GLCanvas.cc, Object.cc, Panel.cc, QtHandlesUtils.h, SliderControl.cc, Table.cc, __init_qt__.cc, qt-graphics-toolkit.cc, main-window.cc, gl-render.cc, gl-render.h, gl2ps-print.cc, graphics-toolkit.cc, graphics.cc, graphics.in.h, input.cc, interpreter.cc, sysdep.cc, utils.cc, __init_fltk__.cc.

/*

Copyright (C) 2007-2019 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
<https://www.gnu.org/licenses/>.

*/

#if defined (HAVE_CONFIG_H)
#  include "config.h"
#endif

#include "graphics.h"
#include "gtk-manager.h"
#include "interpreter-private.h"

void
base_graphics_toolkit::update (const graphics_handle& h, int id)
{
  gh_manager& gh_mgr
    = octave::__get_gh_manager__ ("base_graphics_toolkit::update");

  graphics_object go = gh_mgr.get_object (h);

  update (go, id);
}

bool
base_graphics_toolkit::initialize (const graphics_handle& h)
{
  gh_manager& gh_mgr
    = octave::__get_gh_manager__ ("base_graphics_toolkit::initialize");

  graphics_object go = gh_mgr.get_object (h);

  return initialize (go);
}