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annotate scripts/plot/util/pan.m @ 20726:25d676f9619c

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Preface error() messages with name of function when possible. * FIRfilter.m, subsasgn.m, get.m, polynomial.m, polynomial_superiorto.m, set.m, subsasgn.m, subsref.m, Cell.cc, data.cc, graphics.in.h, toplev.cc, urlwrite.cc, audiodevinfo.cc, symbfact.cc, CollocWt.cc, inputParser.m, narginchk.m, nargoutchk.m, uicontrol.m, rgb2ind.m, textread.m, open.m, __w2mpth__.m, fminbnd.m, pkg.m, pan.m, printd.m, rotate3d.m, zoom.m, eigs.m, validatestring.m, __run_test_suite__.m, runtests.m, test.m: Preface error() messages with name of function when possible.
author Rik <rik@octave.org>
date Thu, 19 Nov 2015 14:17:45 -0800
parents 7b608fadc663
children 418ae0cb752f
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rev   line source
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1 ## Copyright (C) 2014-2015 Andreas Weber
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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 {Command} {} pan
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21 ## @deftypefnx {Command} {} pan on
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22 ## @deftypefnx {Command} {} pan off
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23 ## @deftypefnx {Command} {} pan xon
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24 ## @deftypefnx {Command} {} pan yon
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25 ## @deftypefnx {Function File} {} pan (@var{hfig}, @var{option})
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26 ## Control the interactive panning mode of a figure in the GUI.
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27 ##
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28 ## Given the option @qcode{"on"} or @qcode{"off"}, set the interactive
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29 ## pan mode on or off.
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30 ##
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31 ## With no arguments, toggle the current pan mode on or off.
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32 ##
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33 ## Given the option @qcode{"xon"} or @qcode{"yon"}, enable pan mode
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34 ## for the x or y axis only.
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35 ##
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36 ## If the first argument @var{hfig} is a figure, then operate on the given
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37 ## figure rather than the current figure as returned by @code{gcf}.
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38 ##
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39 ## @seealso{rotate3d, zoom}
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40 ## @end deftypefn
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41
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42 function pan (varargin)
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43
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44 hfig = NaN;
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45
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46 nargs = nargin;
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47
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48 if (nargs > 2)
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49 print_usage ();
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50 endif
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51
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52 if (nargin == 1 && nargout > 0 && isfigure (varargin{1}))
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53 error ("pan: syntax 'handle = pan (hfig)' not implemented");
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54 endif
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55
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56 if (nargs == 2)
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57 hfig = varargin{1};
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58 if (isfigure (hfig))
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59 varargin(1) = [];
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60 nargs--;
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61 else
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62 error ("pan: invalid figure handle HFIG");
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63 endif
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64 endif
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65
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66 if (isnan (hfig))
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67 hfig = gcf ();
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68 endif
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69
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70 if (nargs == 0)
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71 pm = get (hfig, "__pan_mode__");
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72 if (strcmp (pm.Enable, "on"))
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73 pm.Enable = "off";
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74 else
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75 pm.Enable = "on";
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76 endif
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77 set (hfig, "__pan_mode__", pm);
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78 update_mouse_mode (hfig, pm.Enable);
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79 elseif (nargs == 1)
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80 arg = varargin{1};
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81 if (ischar (arg))
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82 switch (arg)
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83 case {"on", "off", "xon", "yon"}
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84 pm = get (hfig, "__pan_mode__");
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85 switch (arg)
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86 case {"on", "off"}
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87 pm.Enable = arg;
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88 pm.Motion = "both";
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89 case "xon"
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90 pm.Enable = "on";
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91 pm.Motion = "horizontal";
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92 case "yon"
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93 pm.Enable = "on";
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94 pm.Motion = "vertical";
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95 endswitch
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96 set (hfig, "__pan_mode__", pm);
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97 update_mouse_mode (hfig, arg);
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98 otherwise
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99 error ("pan: unrecognized option '%s'", arg);
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100 endswitch
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101 else
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102 error ("pan: wrong type argument '%s'", class (arg));
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103 endif
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104 endif
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105
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106 endfunction
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107
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108 function update_mouse_mode (hfig, arg)
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109 if (strcmp (arg, "off"))
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110 set (hfig, "__mouse_mode__", "none");
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111 else
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112 ## FIXME: Is there a better way other than calling these
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113 ## functions to set the other mouse mode Enable fields to
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114 ## "off"?
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115 rotate3d ("off");
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116 zoom ("off");
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117 set (hfig, "__mouse_mode__", "pan");
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118 endif
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119 endfunction