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annotate scripts/plot/graphics_toolkit.m @ 15536:2e8eb9ac43a5 stable rc-3-6-4-0

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3.6.4-rc0 release candidate * configure.ac (AC_INIT): Version is now 3.6.2-rc0. (OCTAVE_RELEASE_DATE): Now 2012-05-11.
author John W. Eaton <jwe@octave.org>
date Wed, 17 Oct 2012 10:05:44 -0400
parents 72c96de7a403
children c39345616b7e
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72c96de7a403 maint: update copyright notices for 2012
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1 ## Copyright (C) 2008-2012 Michael Goffioul
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2 ##
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3 ## This file is part of Octave.
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4 ##
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5 ## Octave is free software; you can redistribute it and/or modify it
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6 ## under the terms of the GNU General Public License as published by
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7 ## the Free Software Foundation; either version 3 of the License, or (at
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8 ## your option) any later version.
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9 ##
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10 ## Octave is distributed in the hope that it will be useful, but
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11 ## WITHOUT ANY WARRANTY; without even the implied warranty of
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12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 ## General Public License for more details.
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14 ##
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15 ## You should have received a copy of the GNU General Public License
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16 ## along with Octave; see the file COPYING. If not, see
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17 ## <http://www.gnu.org/licenses/>.
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18
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19 ## -*- texinfo -*-
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20 ## @deftypefn {Function File} {@var{name} =} graphics_toolkit ()
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21 ## @deftypefnx {Function File} {@var{old_name} =} graphics_toolkit (@var{name})
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22 ## @deftypefnx {Function File} {} graphics_toolkit (@var{hlist}, @var{name})
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23 ## Query or set the default graphics toolkit to @var{name}. If the
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24 ## toolkit is not already loaded, it is first initialized by calling the
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25 ## function @code{__init_@var{name}__}.
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26 ##
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27 ## When called with a list of figure handles, @var{hlist}, the graphics
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28 ## toolkit is changed only for the listed figures.
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29 ## @seealso{available_graphics_toolkits}
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30 ## @end deftypefn
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31
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32 function retval = graphics_toolkit (name, hlist = [])
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33
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34 if (nargin > 2)
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35 print_usage ();
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36 endif
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37
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38 if (nargout > 0 || nargin == 0)
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39 retval = get (0, "defaultfigure__graphics_toolkit__");
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40 endif
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41
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42 if (nargin == 0)
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43 return;
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44 elseif (nargin == 1)
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45 if (! ischar (name))
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46 error ("graphics_toolkit: invalid graphics toolkit NAME");
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47 endif
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48 elseif (nargin == 2)
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49 ## Swap input arguments
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50 [hlist, name] = deal (name, hlist);
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51 if (! all (isfigure (hlist)))
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52 error ("graphics_toolkit: invalid figure handle list HLIST");
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53 elseif (! ischar (name))
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54 error ("graphics_toolkit: invalid graphics toolkit NAME");
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55 endif
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56 endif
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57
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58 if (! any (strcmp (loaded_graphics_toolkits (), name)))
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59 feval (["__init_", name, "__"]);
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60 if (! any (strcmp (loaded_graphics_toolkits (), name)))
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61 error ("graphics_toolkit: %s toolkit was not correctly loaded", name);
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62 endif
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63 endif
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64
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65 if (isempty (hlist))
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66 set (0, "defaultfigure__graphics_toolkit__", name);
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67 else
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68 set (hlist, "__graphics_toolkit__", name);
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69 endif
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70
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71 endfunction
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73
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74 %!testif HAVE_FLTK
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75 %! unwind_protect
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76 %! hf = figure ("visible", "off");
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77 %! toolkit = graphics_toolkit ();
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78 %! assert (get (0, "defaultfigure__graphics_toolkit__"), toolkit);
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79 %! graphics_toolkit (hf, "fltk");
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80 %! assert (get (hf, "__graphics_toolkit__"), "fltk");
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81 %! unwind_protect_cleanup
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82 %! close (hf);
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83 %! end_unwind_protect
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84
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85 %!testif HAVE_FLTK
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86 %! old_toolkit = graphics_toolkit ();
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87 %! switch old_toolkit
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88 %! case {"gnuplot"}
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89 %! new_toolkit = "fltk";
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90 %! otherwise
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91 %! new_toolkit = "gnuplot";
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92 %! endswitch
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93 %! assert (graphics_toolkit (new_toolkit), old_toolkit)
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94 %! assert (graphics_toolkit (old_toolkit), new_toolkit)
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95