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annotate scripts/plot/graphics_toolkit.m @ 14021:e3bed294b117

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refactor graphics_toolkit class (bug #31583) * graphics_toolkit.m: Call loaded_graphics_toolkits to check whether the given toolkit was correctly loaded. * graphics.cc (gnuplot_toolkit): Move to separate file. * __init_gnuplot__.cc: New file, split from graphics.cc. * DLD-FUNCTIONS/module-files: Include __init_gnuplot__.cc in the list. * graphics.h.in, graphics.cc (gtk_manager): New class, extracted from graphics_toolkit, to manage the available and loaded graphics_toolkits. Change all uses of moved functions. * __init_fltk__.cc: Add PKG_ADD line to register toolkit. (toolkit_loaded): Rename from toolkit_registered. * graphics.cc (Fregister_graphics_toolkit, Floaded_graphics_toolkits): New functions.
author John W. Eaton <jwe@octave.org>
date Fri, 09 Dec 2011 11:12:50 -0500
parents 08ae07e40d4f
children c3fab3891460
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1 ## Copyright (C) 2008-2011 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 (nargin == 0)
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39 retval = get (0, "defaultfigure__graphics_toolkit__");
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40 return;
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41 elseif (nargin == 1)
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42 if (! ischar (name))
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43 error ("graphics_toolkit: invalid graphics toolkit NAME");
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44 endif
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45 elseif (nargin == 2)
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46 ## Swap input arguments
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47 [hlist, name] = deal (name, hlist);
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48 if (! all (isfigure (hlist)))
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49 error ("graphics_toolkit: invalid figure handle list HLIST");
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50 elseif (! ischar (name))
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51 error ("graphics_toolkit: invalid graphics toolkit NAME");
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52 endif
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53 endif
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54
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55 if (! any (strcmp (loaded_graphics_toolkits (), name)))
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56 feval (["__init_", name, "__"]);
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57 if (! any (strcmp (loaded_graphics_toolkits (), name)))
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58 error ("graphics_toolkit: %s toolkit was not correctly loaded", name);
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59 endif
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60 endif
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61
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62 if (isempty (hlist))
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63 set (0, "defaultfigure__graphics_toolkit__", name);
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64 else
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65 set (hlist, "__graphics_toolkit__", name);
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66 endif
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67
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68 if (isargout (1))
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69 retval = name;
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70 endif
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71
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72 endfunction
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73
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74
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75 %!testif HAVE_FLTK
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76 %! unwind_protect
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77 %! hf = figure ("visible", "off");
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78 %! toolkit = graphics_toolkit ();
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79 %! assert (get (0, "defaultfigure__graphics_toolkit__"), toolkit);
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80 %! graphics_toolkit (hf, "fltk");
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81 %! assert (get (hf, "__graphics_toolkit__"), "fltk");
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82 %! unwind_protect_cleanup
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83 %! close (hf);
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84 %! end_unwind_protect
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85