src/Fl_get_key.cxx

   1 //
   2 // "$Id: Fl_get_key.cxx 7903 2010-11-28 21:06:39Z matt $"
   3 //
   4 // Keyboard state routines for the Fast Light Tool Kit (FLTK).
   5 //
   6 // Copyright 1998-2010 by Bill Spitzak and others.
   7 //
   8 // This library is free software; you can redistribute it and/or
   9 // modify it under the terms of the GNU Library General Public
  10 // License as published by the Free Software Foundation; either
  11 // version 2 of the License, or (at your option) any later version.
  12 //
  13 // This library is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16 // Library General Public License for more details.
  17 //
  18 // You should have received a copy of the GNU Library General Public
  19 // License along with this library; if not, write to the Free Software
  20 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  21 // USA.
  22 //
  23 // Please report all bugs and problems on the following page:
  24 //
  25 //     http://www.fltk.org/str.php
  26 //
  27
  28 #ifdef WIN32
  29 #  include "Fl_get_key_win32.cxx"
  30 #elif defined(__APPLE__)
  31 #  include "Fl_get_key_mac.cxx"
  32 #else
  33
  34 // Return the current state of a key.  This is the X version.  I identify
  35 // keys (mostly) by the X keysym.  So this turns the keysym into a keycode
  36 // and looks it up in the X key bit vector, which Fl_x.cxx keeps track of.
  37
  38 #  include <FL/Fl.H>
  39 #  include <FL/x.H>
  40
  41 extern char fl_key_vector[32]; // in Fl_x.cxx
  42
  43 int Fl::event_key(int k) {
  44   if (k > FL_Button && k <= FL_Button+8)
  45     return Fl::event_state(8<<(k-FL_Button));
  46   int i;
  47 #  ifdef __sgi
  48   // get some missing PC keyboard keys:
  49   if (k == FL_Meta_L) i = 147;
  50   else if (k == FL_Meta_R) i = 148;
  51   else if (k == FL_Menu) i = 149;
  52   else
  53 #  endif
  54     i = XKeysymToKeycode(fl_display, k);
  55   if (i==0) return 0;
  56   return fl_key_vector[i/8] & (1 << (i%8));
  57 }
  58
  59 int Fl::get_key(int k) {
  60   fl_open_display();
  61   XQueryKeymap(fl_display, fl_key_vector);
  62   return event_key(k);
  63 }
  64
  65 #endif
  66
  67 //
  68 // End of "$Id: Fl_get_key.cxx 7903 2010-11-28 21:06:39Z matt $".
  69 //