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annotate scripts/plot/uigetfile.m @ 12541:dd2c70b30f28

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Add tests for ifftshift.m
author Robert T. Short <octave@phaselockedsystems.com.com>
date Sat, 26 Mar 2011 06:50:12 -0700
parents 33bbae85769a
children f96b9b9f141b
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1 ## Copyright (C) 2010-2011 Kai Habel
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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{fname}, @var{fpath}, @var{fltidx}] =} uigetfile ()
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21 ## @deftypefnx {Function File} {[@dots{}] =} uigetfile (@var{flt})
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22 ## @deftypefnx {Function File} {[@dots{}] =} uigetfile (@var{flt}, @var{dialog_name})
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23 ## @deftypefnx {Function File} {[@dots{}] =} uigetfile (@var{flt}, @var{dialog_name}, @var{default_file})
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24 ## @deftypefnx {Function File} {[@dots{}] =} uigetfile (@dots{}, "Position", [@var{px}, @var{py}])
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25 ## @deftypefnx {Function File} {[@dots{}] =} uigetfile (@dots{}, "MultiSelect", @var{mode})
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26 ##
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27 ## Open a GUI dialog for selecting a file. It returns the filename @var{fname},
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28 ## the path to this file @var{fpath}, and the filter index @var{fltidx}.
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29 ## @var{flt} contains a (list of) file filter string(s) in one of the following
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30 ## formats:
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31 ##
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32 ## @table @asis
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33 ## @item "/path/to/filename.ext"
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34 ## If a filename is given then the file extension is extracted and used as
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35 ## filter. In addition, the path is selected as current path and the filename
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36 ## is selected as default file. Example: @code{uigetfile ("myfun.m")}
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37 ##
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38 ## @item A single file extension "*.ext"
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39 ## Example: @code{uigetfile ("*.ext")}
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40 ##
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41 ## @item A 2-column cell array
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42 ## containing a file extension in the first column and a brief description
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43 ## in the second column.
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44 ## Example: @code{uigetfile (@{"*.ext", "My Description";"*.xyz",
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45 ## "XYZ-Format"@})}
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46 ##
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47 ## The filter string can also contain a semicolon separated list of filter
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48 ## extensions.
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49 ## Example: @code{uigetfile (@{"*.gif;*.png;*.jpg", "Supported Picture
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50 ## Formats"@})}
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51 ## @end table
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52 ##
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53 ## @var{dialog_name} can be used to customize the dialog title.
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54 ## If @var{default_file} is given then it will be selected in the GUI dialog.
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55 ## If, in addition, a path is given it is also used as current path.
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56 ##
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57 ## The screen position of the GUI dialog can be set using the "Position" key
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58 ## and a 2-element vector containing the pixel coordinates.
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59 ## Two or more files can be selected when setting the "MultiSelect" key to "on".
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60 ## In that case @var{fname} is a cell array containing the files.
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61 ## @end deftypefn
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62
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63 ## Author: Kai Habel
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64
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65 function [retfile, retpath, retindex] = uigetfile (varargin)
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66
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67 if (exist("__fltk_uigetfile__") != 3)
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68 error ("uigetfile: fltk graphics toolkit required");
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69 endif
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70
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71 if (nargin > 7)
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72 error ("uigetfile: number of input arguments must be less than eight");
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73 endif
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74
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75 defaultvals = {"All Files(*)", #FLTK File Filter
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76 "Open File?", #Dialog Title
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77 pwd, #FLTK default file name
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78 [240, 120], #Dialog Position (pixel x/y)
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79 "off"}; #MultiSelect on/off
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80
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81 outargs = cell (5, 1);
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82 for i = 1 : 5
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83 outargs{i} = defaultvals{i};
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84 endfor
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85
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86 idx1 = idx2 = [];
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87 if (length (varargin) > 0)
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88 for i = 1 : length (varargin)
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89 val = varargin{i};
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90 if (ischar (val))
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91 if (strncmp (tolower (val), "multiselect", 11))
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92 idx1 = i;
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93 elseif (strncmp(tolower (val), "position", 8))
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94 idx2 = i;
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95 endif
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96 endif
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97 endfor
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98 endif
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99
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100 stridx = [idx1, idx2, 0];
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101 if (length (stridx) > 1)
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102 stridx = min (stridx(1 : end - 1));
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103 endif
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104
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105 args = varargin;
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106 if (stridx)
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107 args = varargin(1 : stridx - 1);
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108 endif
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109
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110 len = length (args);
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111 if (len > 0)
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112 file_filter = args{1};
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113 outargs{1} = __fltk_file_filter__ (file_filter);
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114 if (ischar (file_filter))
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115 outargs{3} = file_filter;
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116 endif
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117 endif
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118
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119 if (len > 1)
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120 outargs{2} = args{2};
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121 endif
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122
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123 if (len > 2)
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124 outargs{3} = args{3};
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125 endif
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126
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127 if (stridx)
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128 ## we have string arguments ("position" or "multiselect")
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129
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130 ## check for even number of remaining arguments, prop/value pair(s)
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131 if (rem (nargin - stridx + 1, 2))
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132 error ("uigetfile: expecting property/value pairs");
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133 endif
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134
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135 for i = stridx : 2 : nargin
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136 prop = varargin{i};
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137 val = varargin{i + 1};
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138 if (strncmp (tolower (prop), "position", 8))
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139 if (ismatrix (val) && length(val) == 2)
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140 outargs{4} = val;
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141 else
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142 error ("uigetfile: expecting 2-element vector for position argument");
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143 endif
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144 elseif (strncmp (tolower (prop), "multiselect", 11))
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145 if (ischar (val))
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146 outargs{5} = tolower (val);
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147 else
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148 error ("uigetfile: expecting string argument (on/off) for multiselect");
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149 endif
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150 else
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151 error ("uigetfile: unknown argument");
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152 endif
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153 endfor
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154 endif
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155
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156 [retfile, retpath, retindex] = __fltk_uigetfile__ (outargs{:});
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157
11283
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158 endfunction
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159
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160 %!demo
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161 %! uigetfile({"*.gif;*.png;*.jpg", "Supported Picture Formats"})