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fix clf docstring typo from previous change * clf.m: Use @dots{}, not @dots.
author John W. Eaton <jwe@octave.org>
date Tue, 11 Oct 2011 10:35:28 -0400
parents 467276f9a366
children 5f0bb45e615c
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1 ## Copyright (C) 2005-2011 John W. Eaton
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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} {} clf ()
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21 ## @deftypefnx {Function File} {} clf ("reset")
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22 ## @deftypefnx {Function File} {} clf (@var{hfig})
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23 ## @deftypefnx {Function File} {} clf (@var{hfig}, "reset")
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24 ## @deftypefnx {Function File} {@var{h} =} clf (@dots{})
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25 ## Clear the current figure window. @code{clf} operates by deleting child
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26 ## graphics objects with visible handles (@code{handlevisibility} = on).
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27 ## If @var{hfig} is specified operate on it instead of the current figure.
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28 ## If the optional argument @code{"reset"} is specified, all objects including
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29 ## those with hidden handles are deleted. If an output value is
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30 ## requested, return the handle of the figure window that was cleared.
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31 ## @seealso{cla, close, delete}
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32 ## @end deftypefn
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33
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34 ## Author: jwe
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35
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36 function retval = clf (varargin)
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37
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38 if (nargin > 2)
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39 print_usage ();
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40 elseif (nargin > 1)
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41 if (isfigure (varargin{1}) && ischar (varargin{2})
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42 && strcmpi (varargin{2}, "reset"))
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43 oldfig = gcf;
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44 hfig = varargin{1};
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45 do_reset = true;
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46 else
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47 print_usage ();
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48 endif
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49 elseif (nargin == 1)
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50 if (isfigure (varargin{1}))
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51 oldfig = gcf;
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52 hfig = varargin{1};
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53 do_reset = false;
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54 elseif (ischar (varargin{1}) && strcmpi (varargin{1}, "reset"))
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55 hfig = gcf;
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56 oldfig = hfig;
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57 do_reset = true;
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58 else
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59 print_usage ();
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60 endif
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61 else
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62 hfig = gcf;
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63 oldfig = hfig;
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64 do_reset = false;
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65 endif
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66
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67 if (do_reset)
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68 ## Select all the children, including the one with hidden handles.
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69 hc = allchild (hfig);
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70 reset (hfig);
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71 else
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72 ## Select only the chilren with visible handles.
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73 hc = get (hfig, "children");
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74 endif
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75
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76 ## Delete the children.
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77 delete (hc);
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78
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79 if (nargout > 0)
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80 retval = hfig;
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81 endif
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82
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83 endfunction
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84
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85 %!test
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86 %! hf = figure ("visible", "off");
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87 %! unwind_protect
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88 %! l = line;
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89 %! assert (!isempty (get (gcf, "children")));
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90 %! unwind_protect_cleanup
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91 %! close (hf);
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92 %! end_unwind_protect
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93
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94 %!test
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95 %! hf = figure ("visible", "off");
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96 %! unwind_protect
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97 %! clf;
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98 %! assert (isempty (get (gcf, "children")));
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99 %! unwind_protect_cleanup
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100 %! close (hf);
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101 %! end_unwind_protect