update packages

[CreaPhase.git] / octave_packages / m / plot / ishghandle.m

diff --git a/octave_packages/m/plot/ishghandle.m b/octave_packages/m/plot/ishghandle.m
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+## Copyright (C) 2008-2012 David Bateman
+##
+## 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/>.
+
+## -*- texinfo -*-
+## @deftypefn {Function File} {} ishghandle (@var{h})
+## Return true if @var{h} is a graphics handle and false otherwise.
+## @end deftypefn
+
+function retval = ishghandle (h)
+  ## This function is just included for compatibility as Octave has
+  ## no simulink equivalent.
+  retval = ishandle (h);
+endfunction
+
+%!test
+%! hf = figure ("visible", "off");
+%! unwind_protect
+%!   assert (ishghandle (hf));
+%!   assert (!ishghandle (-hf));
+%!   l = line;
+%!   ax = gca();
+%!   assert (ishghandle (ax));
+%!   assert (!ishghandle (-ax));
+%!   assert (ishghandle (l));
+%!   assert (!ishghandle (-l));
+%!   p = patch;
+%!   assert (ishghandle (p));
+%!   assert (!ishghandle (-p));
+%!   s = surface;
+%!   assert (ishghandle (s));
+%!   assert (!ishghandle (-s));
+%!   t = text;
+%!   assert (ishghandle (t));
+%!   assert (!ishghandle (-t));
+%!   i = image;
+%!   assert (ishghandle (i));
+%!   assert (!ishghandle (-i));
+%!   hg = hggroup;
+%!   assert (ishghandle (hg));
+%!   assert (!ishghandle (-hg));
+%! unwind_protect_cleanup
+%!   close (hf);
+%! end_unwind_protect
+