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1 ## Copyright (C) 1996, 1997, 2006, 2007 John W. Eaton |
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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 ## Undocumented internal function. |
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20 |
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21 ## Author: jwe |
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22 |
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23 function [h, varargin, narg] = __plt_get_axis_arg__ (caller, varargin) |
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24 |
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25 if (islogical (caller)) |
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26 nogca = caller; |
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27 caller = varargin{1}; |
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28 varargin(1) = []; |
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29 else |
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30 nogca = false; |
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31 endif |
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32 |
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33 ## Figure handles are integers, but object handles are non integer, |
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34 ## therefore ignore integer scalars. |
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35 if (nargin > 1 && length (varargin) > 0 && ishandle (varargin{1}) |
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36 && floor(varargin{1}) != varargin{1}) |
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37 tmp = varargin{1}; |
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38 obj = get (tmp); |
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39 if (strcmp (obj.type, "axes") || strcmp (obj.type, "hggroup")) |
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40 h = ancestor (tmp, "axes"); |
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41 varargin(1) = []; |
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42 if (isempty (varargin)) |
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43 varargin = {}; |
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44 endif |
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45 else |
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46 error ("%s: expecting first argument to be axes handle", caller); |
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47 endif |
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48 else |
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49 f = get (0, "currentfigure"); |
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50 if (isempty (f)) |
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51 h = []; |
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52 else |
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53 h = get (f, "currentaxes"); |
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54 endif |
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55 if (isempty (h)) |
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56 if (nogca) |
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57 h = NaN; |
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58 else |
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59 h = gca (); |
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60 endif |
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61 endif |
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62 if (nargin < 2) |
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63 varargin = {}; |
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64 endif |
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65 endif |
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66 |
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67 narg = length (varargin); |
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68 |
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69 endfunction |
