Mercurial > hg > octave-nkf
annotate scripts/plot/util/zoom.m @ 20407:2283dd03bf50
ginput.m: Don't hang if window is close while fcn active (bug #44897).
* ginput.m: Change closerequestfcn for figure to point to ginput_closerequestfcn.
* ginput.m (ginput_closerequestfcn): New callback routine. Stops collecting
data for ginput. Calls original closerequestfcn to shutdown window.
| author | Rik <rik@octave.org> |
|---|---|
| date | Fri, 15 May 2015 16:51:57 -0700 |
| parents | 777f26aa8e3e |
| children |
| rev | line source |
|---|---|
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1 ## Copyright (C) 2014-2015 John W. Eaton |
| 19281 | 2 ## |
| 3 ## This file is part of Octave. | |
| 4 ## | |
| 5 ## Octave is free software; you can redistribute it and/or modify it | |
| 6 ## under the terms of the GNU General Public License as published by | |
| 7 ## the Free Software Foundation; either version 3 of the License, or (at | |
| 8 ## your option) any later version. | |
| 9 ## | |
| 10 ## Octave is distributed in the hope that it will be useful, but | |
| 11 ## WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 ## General Public License for more details. | |
| 14 ## | |
| 15 ## You should have received a copy of the GNU General Public License | |
| 16 ## along with Octave; see the file COPYING. If not, see | |
| 17 ## <http://www.gnu.org/licenses/>. | |
| 18 | |
| 19 ## -*- texinfo -*- | |
|
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20 ## @deftypefn {Command} {} zoom |
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21 ## @deftypefnx {Command} {} zoom (@var{factor}) |
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22 ## @deftypefnx {Command} {} zoom on |
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23 ## @deftypefnx {Command} {} zoom off |
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24 ## @deftypefnx {Command} {} zoom xon |
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25 ## @deftypefnx {Command} {} zoom yon |
| 19281 | 26 ## @deftypefnx {Command} {} zoom out |
| 27 ## @deftypefnx {Command} {} zoom reset | |
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28 ## @deftypefnx {Command} {} zoom (@var{hfig}, @var{option}) |
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29 ## Zoom the current axes object or control the interactive zoom mode of a |
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30 ## figure in the GUI. |
| 19281 | 31 ## |
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32 ## Given a numeric argument greater than zero, zoom by the given factor. If |
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33 ## the zoom factor is greater than one, zoom in on the plot. If the factor |
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34 ## is less than one, zoom out. If the zoom factor is a two- or three-element |
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35 ## vector, then the elements specify the zoom factors for the x, y, and z |
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36 ## axes respectively. |
| 19281 | 37 ## |
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38 ## Given the option @qcode{"on"} or @qcode{"off"}, set the interactive zoom |
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39 ## mode on or off. |
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40 ## |
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41 ## With no arguments, toggle the current zoom mode on or off. |
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42 ## |
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43 ## Given the option @qcode{"xon"} or @qcode{"yon"}, enable zoom mode for the |
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44 ## x or y-axis only. |
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45 ## |
| 19281 | 46 ## Given the option @qcode{"out"}, zoom to the initial zoom setting. |
| 47 ## | |
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48 ## Given the option @qcode{"reset"}, store the current zoom setting so that |
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49 ## @code{zoom out} will return to this zoom level. |
| 19281 | 50 ## |
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51 ## If the first argument @var{hfig} is a figure, then operate on the given |
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52 ## figure rather than the current figure as returned by @code{gcf}. |
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53 ## |
| 19281 | 54 ## @seealso{pan, rotate3d} |
| 55 ## @end deftypefn | |
| 56 | |
| 57 ## Eventually we need to also support these features: | |
| 58 ## @deftypefnx {Command} {zoom_object_handle =} zoom (@var{hfig}) | |
| 59 | |
| 60 function zoom (varargin) | |
| 61 | |
| 62 nargs = nargin; | |
| 63 if (nargs > 2) | |
| 64 print_usage (); | |
| 65 endif | |
| 66 | |
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67 if (nargs == 1 && nargout > 0 && isfigure (varargin{1})) |
| 19281 | 68 error ("zoom_object_handle = zoom (hfig): not implemented"); |
| 69 endif | |
| 70 | |
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71 hfig = NaN; |
| 19281 | 72 if (nargs == 2) |
| 73 hfig = varargin{1}; | |
| 74 if (isfigure (hfig)) | |
| 75 varargin(1) = []; | |
| 76 nargs--; | |
| 77 else | |
| 78 error ("zoom: expecting figure handle as first argument"); | |
| 79 endif | |
| 80 endif | |
| 81 | |
| 82 if (isnan (hfig)) | |
| 83 hfig = gcf (); | |
| 84 endif | |
| 85 | |
| 86 if (nargs == 0) | |
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87 zm = get (hfig, "__zoom_mode__"); |
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88 if (strcmp (zm.Enable, "on")) |
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89 zm.Enable = "off"; |
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90 else |
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91 zm.Enable = "on"; |
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92 endif |
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93 set (hfig, "__zoom_mode__", zm); |
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94 update_mouse_mode (hfig, zm.Enable); |
| 19281 | 95 elseif (nargs == 1) |
| 96 arg = varargin{1}; | |
| 97 if (isnumeric (arg)) | |
| 98 factor = arg; | |
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99 switch (numel (factor)) |
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100 case 2 |
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101 xfactor = factor(1); |
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102 yfactor = factor(2); |
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103 case 1 |
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104 xfactor = yfactor = factor; |
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105 otherwise |
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106 error ("zoom: invalid factor"); |
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107 endswitch |
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108 if (xfactor < 0 || yfactor < 0) |
| 19281 | 109 error ("zoom: factor must be greater than 1"); |
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110 elseif (xfactor == 1 && yfactor == 1) |
| 19281 | 111 return; |
| 112 endif | |
| 113 cax = get (hfig, "currentaxes"); | |
| 114 if (! isempty (cax)) | |
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115 if (xfactor != 1) |
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116 if (yfactor != 1) |
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117 mode = "both"; |
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118 else |
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119 mode = "horizontal"; |
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120 endif |
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121 else |
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122 if (yfactor != 1) |
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123 mode = "vertical"; |
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124 endif |
| 19281 | 125 endif |
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126 __zoom__ (cax, mode, factor); |
| 19281 | 127 endif |
| 128 elseif (ischar (arg)) | |
| 129 switch (arg) | |
| 130 case {"on", "off", "xon", "yon"} | |
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131 zm = get (hfig, "__zoom_mode__"); |
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132 switch (arg) |
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133 case {"on", "off"} |
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134 zm.Enable = arg; |
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135 zm.Motion = "both"; |
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136 case "xon" |
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137 zm.Enable = "on"; |
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138 zm.Motion = "horizontal"; |
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139 case "yon" |
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140 zm.Enable = "on"; |
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141 zm.Motion = "vertical"; |
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142 endswitch |
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143 set (hfig, "__zoom_mode__", zm); |
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144 update_mouse_mode (hfig, arg); |
| 19281 | 145 case "out" |
| 146 cax = get (hfig, "currentaxes"); | |
| 147 if (! isempty (cax)) | |
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148 __zoom__ (cax, "out"); |
| 19281 | 149 endif |
| 150 case "reset" | |
| 151 cax = get (hfig, "currentaxes"); | |
| 152 if (! isempty (cax)) | |
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153 __zoom__ (cax, "reset"); |
| 19281 | 154 endif |
| 155 otherwise | |
| 156 error ("zoom: unrecognized option '%s'", arg); | |
| 157 endswitch | |
| 158 else | |
| 159 error ("zoom: wrong type argument '%s'", class (arg)); | |
| 160 endif | |
| 161 endif | |
| 162 | |
| 163 endfunction | |
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164 |
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165 function update_mouse_mode (hfig, arg) |
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166 if (strcmp (arg, "off")) |
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167 set (hfig, "__mouse_mode__", "none"); |
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168 else |
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169 ## FIXME: Is there a better way other than calling these |
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170 ## functions to set the other mouse mode Enable fields to |
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171 ## "off"? |
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172 pan ("off"); |
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173 rotate3d ("off"); |
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174 set (hfig, "__mouse_mode__", "zoom"); |
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175 endif |
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176 endfunction |
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177 |
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178 |
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179 %!demo |
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180 %! clf; |
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181 %! sombrero (); |
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182 %! pause (1); |
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183 %! %% zoom in by a factor of 2 |
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184 %! zoom (2); |
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185 %! pause (1); |
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186 %! %% return to original zoom level |
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187 %! zoom out; |
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188 %! pause (1); |
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189 %! %% zoom in by a factor of 2 |
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190 %! zoom (2); |
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191 %! pause (1); |
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192 %! %% set this zoom level as the "initial zoom level" |
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193 %! %% and zoom in some more |
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194 %! zoom reset; |
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195 %! zoom (2); |
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196 %! pause (1); |
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197 %! %% return to zoom level set by last call to "zoom reset" |
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198 %! zoom out; |
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Rik <rik@octave.org>
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199 |