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annotate scripts/plot/linkprop.m @ 16609:6f7940e36322

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improve handling of cursor blinking for unix GUI terminal window * QUnixTerminalImpl.h, QUnixTerminalImpl.cpp (QUnixTerminalImpl::focusInEvent): Delete. * TerminalView.h, TerminalView.cpp (TerminalView::drawCursor): Don't check focus. (TerminalView::setBlinkingCursorState): New function. (TerminalView::setBlinkingCursor): Use it. (TerminalView::focusInEvent, TerminalView::focusOutEvent): New functions. (TerminalView::blinkCursorEvent): Only toggle state if _hasBlinkingCursor is true.
author John W. Eaton <jwe@octave.org>
date Sat, 04 May 2013 01:01:44 -0400
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72c96de7a403 maint: update copyright notices for 2012
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1 ## Copyright (C) 2008-2012 David Bateman
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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{hlink} =} linkprop (@var{h}, @var{prop})
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21 ## Link graphics object properties, such that a change in one is
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22 ## propagated to the others. The properties to link are given as a
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23 ## string of cell string array by @var{prop} and the objects containing
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24 ## these properties by the handle array @var{h}.
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25 ##
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26 ## An example of the use of linkprop is
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27 ##
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28 ## @example
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29 ## @group
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30 ## x = 0:0.1:10;
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31 ## subplot (1,2,1);
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32 ## h1 = plot (x, sin (x));
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33 ## subplot (1,2,2);
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34 ## h2 = plot (x, cos (x));
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35 ## hlink = linkprop ([h1, h2], @{"color","linestyle"@});
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36 ## set (h1, "color", "green");
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37 ## set (h2, "linestyle", "--");
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38 ## @end group
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39 ## @end example
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40 ##
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41 ## @end deftypefn
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42
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43 function hlink = linkprop (h, prop)
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44 if (ischar (prop))
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45 prop = {prop};
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46 elseif (!iscellstr (prop))
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47 error ("linkprop: properties must be a string or cell string array");
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48 endif
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49
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50 for i = 1 : numel (h)
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51 for j = 1 : numel (prop)
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52 addlistener (h(i), prop{j}, {@update_prop, h, prop{j}});
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53 endfor
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54 endfor
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55
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56 ## This should be an object that when destroyed removes the links
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57 ## The below is not quite right. As when you call "clear hlink" the
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58 ## hggroup continues to exist.
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59 hlink = hggroup ();
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60 set (hlink, "deletefcn", {@delete_prop, h, prop});
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61 endfunction
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62
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63 function update_prop (h, d, hlist, prop)
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64 persistent recursion = false;
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65
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66 ## Don't allow recursion
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67 if (! recursion)
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68 unwind_protect
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69 recursion = true;
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70 val = get (h, prop);
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71 for hh = hlist(:)'
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72 if (hh != h)
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73 oldval = get (hh, prop);
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74 if (! isequal (val, oldval))
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75 set (hh, prop, val);
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76 endif
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77 endif
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78 endfor
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79 unwind_protect_cleanup
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80 recursion = false;
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81 end_unwind_protect
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82 endif
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83 endfunction
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84
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85 function delete_prop (h, d, hlist, prop)
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86 ## FIXME. Actually need to delete the linked properties.
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87 ## However, only warn if the graphics objects aren't being deleted.
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88 warn = false;
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89 for h = hlist(:)'
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90 if (ishandle (h) && !strcmpi (get (h, "beingdeleted"), "on"))
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91 warn = true;
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92 break;
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93 endif
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94 endfor
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95 if (warn)
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96 warning ("linkprop: can not remove linked properties");
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97 endif
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98 endfunction