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annotate scripts/plot/private/__fltk_ginput__.m @ 13808:d5bfaa582eaa

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correctly handle RGB color spec for patch object * __patch__.m: Set facecolor from RGB color spec
author John W. Eaton <jwe@octave.org>
date Thu, 03 Nov 2011 16:14:28 -0400
parents 6f91ca83d2be
children 72c96de7a403
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1 ## Copyright (C) 2010-2011 Shai Ayal
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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{x}, @var{y}, @var{buttons}] =} __fltk_ginput__ (@var{f}, @var{n})
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21 ## Undocumented internal function.
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22 ## @end deftypefn
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23
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24 ## This is ginput.m implementation for fltk.
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25
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26 ## FIXME -- Key presses cannot toggle menu items nor hotkey functionality
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27 ## (grid, autoscale) during ginput!
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28
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29 function [x, y, button] = __fltk_ginput__ (f, n = -1)
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30
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31 if (isempty (get (f, "currentaxes")))
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32 error ("ginput: must have at least one axes");
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33 endif
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34
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35 x = y = button = [];
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36 ginput_aggregator (0, 0, 0, 0);
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37
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38 unwind_protect
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39
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40 orig_windowbuttondownfcn = get (f, "windowbuttondownfcn");
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41 set (f, "windowbuttondownfcn", @ginput_windowbuttondownfcn);
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42
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43 orig_ginput_keypressfcn = get (f, "keypressfcn");
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44 set (f, "keypressfcn", @ginput_keypressfcn);
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45
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46 while (true)
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47 __fltk_redraw__ ();
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48
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49 ## Release CPU.
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50 sleep (0.01);
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51
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52 [x, y, n0, button] = ginput_aggregator (-1, 0, 0, 0);
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53 if (n0 == n || n0 < 0)
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54 break;
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55 endif
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56 endwhile
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57
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58 unwind_protect_cleanup
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59 set (f, "windowbuttondownfcn", orig_windowbuttondownfcn);
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60 set (f, "keypressfcn", orig_ginput_keypressfcn);
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61 end_unwind_protect
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62
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63 endfunction
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64
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65 function [x, y, n, button] = ginput_aggregator (mode, xn, yn, btn)
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66 persistent x y n button;
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67
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68 if (mode == 0)
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69 ## Initialize.
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70 x = [];
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71 y = [];
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72 button = [];
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73 n = 0;
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74 elseif (mode == 1)
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75 ## Accept mouse button or key press.
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76 x = [x; xn];
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77 y = [y; yn];
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78 button = [button; btn];
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79 n += 1;
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80 elseif (mode == 2)
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81 ## The end due to Enter.
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82 n = -1;
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83 endif
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84 endfunction
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85
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86 function ginput_windowbuttondownfcn (src, data)
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87 point = get (get (src,"currentaxes"), "currentpoint");
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88 ## FIXME -- How to get the actual mouse button pressed (1,2,3) into
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89 ## "button"?
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90 button = 1;
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91 ginput_aggregator (1, point(1,1), point(2,1), button);
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92 endfunction
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93
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94 function ginput_keypressfcn (src, evt)
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95 point = get (get (src, "currentaxes"), "currentpoint");
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96 ## FIXME -- use evt.Key or evt.Character?
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97 key = evt.Key;
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98 if (key == 10)
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99 ## Enter key.
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100 ginput_aggregator (2, point(1,1), point(2,1), key);
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101 else
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102 ginput_aggregator (1, point(1,1), point(2,1), key);
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103 endif
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104 endfunction
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105