mousewheel.js 551 B

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  1. /*
  2. * Copyright 2018 Scytl Secure Electronic Voting SA
  3. *
  4. * All rights reserved
  5. *
  6. * See our extended copyright notice in *file 'Copyright.txt' which is part of this source code package
  7. */
  8. /* jshint node:true */
  9. 'use strict';
  10. module.exports = MouseWheelCollector;
  11. var collectEntropy_;
  12. function MouseWheelCollector(collectEntropyCallback) {
  13. collectEntropy_ = collectEntropyCallback;
  14. }
  15. MouseWheelCollector.prototype = {
  16. handleEvent: function(ev) {
  17. ev = ev || window.event;
  18. collectEntropy_((ev.offsetY || 0) + (+new Date()), 3);
  19. }
  20. };