deck.blank.js

   1 /*!
   2 Deck JS - deck.blank
   3 Copyright (c) 2012 Daniel Knittl-Frank
   4 Dual licensed under the MIT license and GPL license.
   5 https://github.com/imakewebthings/deck.js/blob/master/MIT-license.txt
   6 https://github.com/imakewebthings/deck.js/blob/master/GPL-license.txt
   7 */
   8
   9 /*
  10 This module adds the methods and key binding to show a blank page instead of
  11 the slides in the deck.  The deck menu state is indicated by the presence of
  12 a class on the deck container.
  13 */
  14 (function($, deck, undefined) {
  15         var $d = $(document);
  16
  17         /*
  18         Extends defaults/options.
  19
  20         options.classes.blank
  21                 These classes are added to the deck container when blanking the screen.
  22
  23         options.keys.black
  24         options.keys.white
  25                 The numeric keycodes used to toggle between a blank screen and slides.
  26         */
  27         $.extend(true, $[deck].defaults, {
  28                 classes: {
  29                         blank: 'deck-blank',
  30                         black: 'deck-blank-black',
  31                         white: 'deck-blank-white'
  32                 },
  33
  34                 keys: {
  35                         black: [66, 190], // b, .
  36                         white: 87         // w
  37                 }
  38         });
  39
  40         /*
  41         jQuery.deck('toggleBlank', color)
  42
  43         Shows a blank page (either black or white), or unhides the slides,
  44         if currently blanked.
  45         */
  46         $[deck]('extend', 'toggleBlank', function(color) {
  47                 var $c = $[deck]('getContainer'),
  48                 opts = $[deck]('getOptions');
  49
  50                 if ($c.hasClass(opts.classes.blank))
  51                         $c.removeClass([opts.classes.blank, opts.classes.black, opts.classes.white].join(' '));
  52                 else
  53                         $c.addClass([opts.classes.blank, opts.classes[color]].join(' '));
  54         });
  55
  56         $d.bind('deck.init', function() {
  57                 var opts = $[deck]('getOptions');
  58
  59                 $d.unbind('keydown.deckblank').bind('keydown.deckblank', function(e) {
  60                         if (e.ctrlKey) return;
  61                         if (e.which === opts.keys.black || $.inArray(e.which, opts.keys.black) > -1) {
  62                                 $[deck]('toggleBlank', 'black');
  63                                 e.preventDefault();
  64                         } else if (e.which === opts.keys.white || $.inArray(e.which, opts.keys.white) > -1) {
  65                                 $[deck]('toggleBlank', 'white');
  66                                 e.preventDefault();
  67                         }
  68                 });
  69
  70         });
  71 })(jQuery, 'deck');
  72