local version plugin

js/jquery.readingTime.js

@@ -0,0 +1,75 @@
+;(function ($, window, document, undefined) {
+
+  var pluginName = "readingTime";
+
+  var defaults = {
+    bubble: '#scrollbubble'
+  };
+
+  function Plugin(element, options) {
+    this.element = element;
+    this.options = $.extend({}, defaults, options);
+    this.scroll_timer = null;
+    this._defaults = defaults;
+    this._name = pluginName;
+    this.init();
+  }
+
+  Plugin.prototype = {
+    init: function () {
+      $(window).scroll($.proxy(this.updateTime, this));
+      $('<div id="scrollbubble"></div>').appendTo("body");
+      $('<style>#scrollbubble{display:none;position:fixed;top:0;right:20px;z-index:500;background-color:#000;color:#fff;border-radius:3px;font-family:Georgia;font-size:12px;text-transform:uppercase;letter-spacing:1px;padding:3px 8px}#scrollbubble:after{content:" ";position:absolute;top:50%;right:-8px;height:0;width:0;margin-top:-4px;border:4px solid transparent;border-left-color:#000}</style>').appendTo('body');
+    },
+    updateTime: function () {
+      var total_reading_time = 0,
+        bubble = $(this.options.bubble),
+        post_content = $(this.element);
+      var viewportHeight = $(window).height(),
+       scrollbarHeight = viewportHeight / $(document).height() * viewportHeight,
+       progress = $(window).scrollTop() / ($(document).height() - viewportHeight),
+       distance = progress * (viewportHeight - scrollbarHeight) + scrollbarHeight / 2 - bubble.height() / 2;
+      var total_reading_time = this.calculate_total_time_words(post_content, this.element) / 60;
+      var total_reading_time_remaining = Math.ceil(total_reading_time - (total_reading_time * progress));
+      var text = '';
+
+      if(total_reading_time_remaining > 1) {
+        text = total_reading_time_remaining + ' minutes left';
+      } else if(progress >= 1) {
+        text = 'Thanks for reading';
+      } else if (total_reading_time_remaining <= 1) {
+        text = 'Less than a minute';
+      }
+
+      bubble
+        .css('top', distance)
+        .text(text)
+        .fadeIn(100);
+
+      // Fade out the annotation after 1 second of no scrolling.
+      if (this.scroll_timer !== null) {
+        clearTimeout(this.scroll_timer);
+      }
+
+      this.scroll_timer = setTimeout(function() {
+        bubble.fadeOut();
+      }, 1000);
+    },
+    calculate_total_time_words: function(post_content, element){
+      var total = 0;
+      post_content.each(function() {
+        total += Math.round(60*$(element).text().split(' ').length/200); // 200 = number of words per minute
+      });
+
+      return total;
+    }
+  };
+
+  $.fn[pluginName] = function (options) {
+    return this.each(function () {
+      if (!$.data(this, "plugin_" + pluginName)) {
+        $.data(this, "plugin_" + pluginName, new Plugin(this, options));
+      }
+    });
+  };
+})(jQuery, window, document);

wp-reading-time.php

@@ -53,7 +53,7 @@ function __construct() {
 	 */
 	public function register_plugin_scripts() {
 
-		wp_enqueue_script( 'jquery-reading-time', "//raw.github.com/themeskult/jquery-reading-time/master/jquery.readingTime.js", array('jquery'));
+		wp_enqueue_script( 'jquery-reading-time', plugins_url("wp-reading-time/js/jquery.readingTime.js"), array('jquery'));
 
 	} // end register_plugin_scripts