rkeys/io/x11/keycode.js

A platform for creating tablet/HTML5 virtual-keyboard apps to send keystrokes to remote X11

// Generated by LiveScript 1.3.0
(function(){
  var _, X11, H, PREFIX, ks2kc, me;
  _ = require('lodash');
  X11 = require('x11');
  H = require('./helper');
  PREFIX = 'XK_';
  module.exports = me = {
    init: getKeysymToKeycodeMapping,
    isKeysym: function(it){
      return _.startsWith(it, PREFIX);
    },
    getKeycodes: function(key){
      var keysym, kc;
      keysym = getKeysym(key);
      if (!(kc = ks2kc[keysym])) {
        return log("Invalid keysym " + keysym);
      }
      if (!kc.isShift) {
        return [kc.keycode];
      }
      return [ks2kc[getKeysym('XK_Shift_L')].keycode, kc.keycode];
    }
  };
  function getKeysym(key){
    if (me.isKeysym(key)) {
      return key;
    } else {
      return PREFIX + "" + key;
    }
  }
  function getKeysymToKeycodeMapping(cb){
    var ks2names, name, ks, key$, min, max;
    ks2names = {};
    for (name in ks = X11.keySyms) {
      (ks2names[key$ = ks[name]] || (ks2names[key$] = [])).push(name);
    }
    min = H.display.min_keycode;
    max = H.display.max_keycode;
    return H.x.GetKeyboardMapping(min, max - min, function(err, list){
      var i$, len$, i, sublist, j$, ref$, len1$, j, ref1$, ksym, knames, k$, len2$, name;
      if (err) {
        return cb(err);
      }
      ks2kc = {};
      for (i$ = 0, len$ = list.length; i$ < len$; ++i$) {
        i = i$;
        sublist = list[i$];
        for (j$ = 0, len1$ = (ref$ = [0, 1]).length; j$ < len1$; ++j$) {
          j = ref$[j$];
          if (!(0 <= (ref1$ = ksym = sublist[j]) && ref1$ < 65536)) {
            continue;
          }
          if (!(knames = ks2names[ksym])) {
            continue;
          }
          for (k$ = 0, len2$ = knames.length; k$ < len2$; ++k$) {
            name = knames[k$];
            if (ks2kc[name]) {
              continue;
            }
            ks2kc[name] = {
              keycode: i + min,
              isShift: j === 1
            };
          }
        }
      }
      return cb();
    });
  }
}).call(this);