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doc: grammarcheck documentation ahead of 8.1 release. * interpreter.cc, load-path.cc, warning_ids.m, __memoize__.m, print.m: grammarcheck documentation ahead of 8.1 release.
author Rik <rik@octave.org>
date Tue, 29 Nov 2022 15:58:49 -0800
parents 796f54d4ddbf
children 597f3ee61a48
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1 ########################################################################
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2 ##
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3 ## Copyright (C) 2005-2022 The Octave Project Developers
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4 ##
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5 ## See the file COPYRIGHT.md in the top-level directory of this
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6 ## distribution or <https://octave.org/copyright/>.
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7 ##
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8 ## This file is part of Octave.
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9 ##
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10 ## Octave is free software: you can redistribute it and/or modify it
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11 ## under the terms of the GNU General Public License as published by
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12 ## the Free Software Foundation, either version 3 of the License, or
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13 ## (at your option) any later version.
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14 ##
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15 ## Octave is distributed in the hope that it will be useful, but
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16 ## WITHOUT ANY WARRANTY; without even the implied warranty of
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17 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 ## GNU General Public License for more details.
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19 ##
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20 ## You should have received a copy of the GNU General Public License
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21 ## along with Octave; see the file COPYING. If not, see
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22 ## <https://www.gnu.org/licenses/>.
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23 ##
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24 ########################################################################
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25
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26 ## -*- texinfo -*-
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27 ## @deftypefn {} {} clf
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28 ## @deftypefnx {} {} clf reset
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29 ## @deftypefnx {} {} clf (@var{hfig})
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30 ## @deftypefnx {} {} clf (@var{hfig}, "reset")
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31 ## @deftypefnx {} {@var{h} =} clf (@dots{})
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32 ## Clear the current figure window.
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33 ##
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34 ## @code{clf} operates by deleting child graphics objects with visible
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35 ## handles (HandleVisibility = @qcode{"on"}).
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36 ##
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37 ## If the optional argument @qcode{"reset"} is specified, delete all child
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38 ## objects including those with hidden handles and reset all figure
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39 ## properties to their defaults. However, the following properties are not
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40 ## reset: Position, Units, PaperPosition, PaperUnits.
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41 ##
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42 ## If the first argument @var{hfig} is a figure handle, then operate on
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43 ## this figure rather than the current figure returned by @code{gcf}.
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44 ##
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45 ## The optional return value @var{h} is the graphics handle of the figure
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46 ## window that was cleared.
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47 ## @seealso{cla, close, delete, reset}
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48 ## @end deftypefn
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49
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50 function h = clf (varargin)
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51
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52 if (nargin > 2)
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53 print_usage ();
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54 elseif (nargin == 0)
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55 hfig = gcf ();
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56 do_reset = false;
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57 elseif (nargin == 1)
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58 if (isscalar (varargin{1}) && isfigure (varargin{1}))
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59 hfig = varargin{1};
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60 do_reset = false;
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61 elseif (ischar (varargin{1}) && strcmpi (varargin{1}, "reset"))
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62 hfig = gcf ();
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63 do_reset = true;
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64 else
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65 print_usage ();
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66 endif
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67 else
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68 if (isscalar (varargin{1}) && isfigure (varargin{1})
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69 && ischar (varargin{2}) && strcmpi (varargin{2}, "reset"))
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70 hfig = varargin{1};
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71 do_reset = true;
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72 else
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73 print_usage ();
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74 endif
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75 endif
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76
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77 if (do_reset)
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78 ## Delete all the children, including the ones with hidden handles,
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79 ## except default menus and toolbar.
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80
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81 kids = allchild (hfig);
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82
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83 if (! isempty (kids))
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84 tags = get (kids, "tag");
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85 ## It's possible for a figure to have just one child and then get
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86 ## will return a single value instead of a cell array.
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87 if (! iscell (tags))
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88 tags = {tags};
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89 endif
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90 ismenu = cellfun (@(s) strncmp (s, "__default_menu_", 15), tags);
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91 istoolbar = cellfun (@(s) strncmp (s, "__default_toolbar_menu_", 18), tags);
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92 delete (kids(! ismenu & ! istoolbar));
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93 endif
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94
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95 reset (hfig);
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96
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97 if (! isempty (kids))
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98 ## Recover figure listeners which have been deleted
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99 __add_default_menu__ (hfig, kids(ismenu), kids(istoolbar));
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100 endif
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101
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102 __set_default_mouse_modes__ (hfig);
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103 else
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104 ## Select only the chilren with visible handles.
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105 delete (get (hfig, "children"));
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106
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107 ## Also delete the annotation axes
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108 hover = findall (hfig, "-depth", 1, "tag", "scribeoverlay");
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109 delete (hover);
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110 endif
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111
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112 if (nargout > 0)
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113 h = hfig;
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114 endif
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115
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116 endfunction
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117
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118
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119 %!test
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120 %! hf = figure ("visible", "off");
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121 %! unwind_protect
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122 %! l = line ();
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123 %! assert (! isempty (get (gcf, "children")));
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124 %! clf;
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125 %! assert (isempty (get (gcf, "children")));
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126 %! unwind_protect_cleanup
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127 %! close (hf);
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128 %! end_unwind_protect
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129
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130 %!test
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131 %! hf = figure ("visible", "off");
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John W. Eaton <jwe@octave.org>
parents: 13124
diff changeset
132 %! unwind_protect
13096
5553412c6614 Tests for scripts/plot
Kai Habel <kai.habel@gmx.de>
parents: 11589
diff changeset
133 %! clf;
5553412c6614 Tests for scripts/plot
Kai Habel <kai.habel@gmx.de>
parents: 11589
diff changeset
134 %! assert (isempty (get (gcf, "children")));
5553412c6614 Tests for scripts/plot
Kai Habel <kai.habel@gmx.de>
parents: 11589
diff changeset
135 %! unwind_protect_cleanup
5553412c6614 Tests for scripts/plot
Kai Habel <kai.habel@gmx.de>
parents: 11589
diff changeset
136 %! close (hf);
5553412c6614 Tests for scripts/plot
Kai Habel <kai.habel@gmx.de>
parents: 11589
diff changeset
137 %! end_unwind_protect
14001
5f0bb45e615c doc: Update documentation for functions returning a graphics handle h (Bug #34761)
Rik <octave@nomad.inbox5.com>
parents: 13316
diff changeset
138
25231
e1024058833c test: change remaining %!xtests into %!tests
Mike Miller <mtmiller@octave.org>
parents: 25054
diff changeset
139 %!test
21580
ecce63c99c3f maint: Add semicolons to terminate code in %! blocks.
Rik <rik@octave.org>
parents: 20852
diff changeset
140 %! set (0, "defaultfigurevisible", "off");
17092
498b9f62199a clf.m: Update docstring and simplify code. Add new %!demo block.
Rik <rik@octave.org>
parents: 14363
diff changeset
141 %! hf = figure ("visible", "off");
498b9f62199a clf.m: Update docstring and simplify code. Add new %!demo block.
Rik <rik@octave.org>
parents: 14363
diff changeset
142 %! unwind_protect
498b9f62199a clf.m: Update docstring and simplify code. Add new %!demo block.
Rik <rik@octave.org>
parents: 14363
diff changeset
143 %! plot (1:10);
498b9f62199a clf.m: Update docstring and simplify code. Add new %!demo block.
Rik <rik@octave.org>
parents: 14363
diff changeset
144 %! set (hf, "papertype", "tabloid");
498b9f62199a clf.m: Update docstring and simplify code. Add new %!demo block.
Rik <rik@octave.org>
parents: 14363
diff changeset
145 %! clf (hf);
498b9f62199a clf.m: Update docstring and simplify code. Add new %!demo block.
Rik <rik@octave.org>
parents: 14363
diff changeset
146 %! assert (isempty (get (gcf, "children")));
498b9f62199a clf.m: Update docstring and simplify code. Add new %!demo block.
Rik <rik@octave.org>
parents: 14363
diff changeset
147 %! assert (get (hf, "papertype"), "tabloid");
498b9f62199a clf.m: Update docstring and simplify code. Add new %!demo block.
Rik <rik@octave.org>
parents: 14363
diff changeset
148 %! plot (1:10);
498b9f62199a clf.m: Update docstring and simplify code. Add new %!demo block.
Rik <rik@octave.org>
parents: 14363
diff changeset
149 %! clf (hf, "reset");
498b9f62199a clf.m: Update docstring and simplify code. Add new %!demo block.
Rik <rik@octave.org>
parents: 14363
diff changeset
150 %! kids = get (hf, "children");
498b9f62199a clf.m: Update docstring and simplify code. Add new %!demo block.
Rik <rik@octave.org>
parents: 14363
diff changeset
151 %! assert (isempty (get (gcf, "children")));
498b9f62199a clf.m: Update docstring and simplify code. Add new %!demo block.
Rik <rik@octave.org>
parents: 14363
diff changeset
152 %! assert (get (hf, "papertype"), "usletter");
498b9f62199a clf.m: Update docstring and simplify code. Add new %!demo block.
Rik <rik@octave.org>
parents: 14363
diff changeset
153 %! unwind_protect_cleanup
21580
ecce63c99c3f maint: Add semicolons to terminate code in %! blocks.
Rik <rik@octave.org>
parents: 20852
diff changeset
154 %! set (0, "defaultfigurevisible", "remove");
17092
498b9f62199a clf.m: Update docstring and simplify code. Add new %!demo block.
Rik <rik@octave.org>
parents: 14363
diff changeset
155 %! close (hf);
498b9f62199a clf.m: Update docstring and simplify code. Add new %!demo block.
Rik <rik@octave.org>
parents: 14363
diff changeset
156 %! end_unwind_protect