https://dhbvn.org.in/RAPDRP-Redesign-theme/js/jquery.scrollbox.js

1/*!
2 * jQuery Scrollbox
3 * (c) 2009-2013 Hunter Wu <[email protected]>
4 * MIT Licensed.
5 *
6 * http://github.com/wmh/jquery-scrollbox
7 */
8
9(function($) {
10
11$.fn.scrollbox = function(config) {
12  //default config
13  var defConfig = {
14    linear: false,          // Scroll method
15    startDelay: 2,          // Start delay (in seconds)
16    delay: 3,               // Delay after each scroll event (in seconds)
17    step: 5,                // Distance of each single step (in pixels)
18    speed: 32,              // Delay after each single step (in milliseconds)
19    switchItems: 1,         // Items to switch after each scroll event
20    direction: 'vertical',
21    distance: 'auto',
22    autoPlay: true,
23    onMouseOverPause: true,
24    paused: false,
25    queue: null,
26    listElement: 'ul',
27    listItemElement:'li'
28  };
29  config = $.extend(defConfig, config);
30  config.scrollOffset = config.direction === 'vertical' ? 'scrollTop' : 'scrollLeft';
31  if (config.queue) {
32    config.queue = $('#' + config.queue);
33  }
34
35  return this.each(function() {
36    var container = $(this),
37        containerUL,
38        scrollingId = null,
39        nextScrollId = null,
40        paused = false,
41        backward,
42        forward,
43        resetClock,
44        scrollForward,
45        scrollBackward;
46
47    if (config.onMouseOverPause) {
48      container.bind('mouseover', function() { paused = true; });
49      container.bind('mouseout', function() { paused = false; });
50    }
51    containerUL = container.children(config.listElement + ':first-child');
52
53    scrollForward = function() {
54      if (paused) {
55        return;
56      }
57      var curLi,
58          i,
59          newScrollOffset,
60          scrollDistance,
61          theStep;
62
63      curLi = containerUL.children(config.listItemElement + ':first-child');
64
65      scrollDistance = config.distance !== 'auto' ? config.distance :
66        config.direction === 'vertical' ? curLi.outerHeight(true) : curLi.outerWidth(true);
67
68      // offset
69      if (!config.linear) {
70        theStep = Math.max(3, parseInt((scrollDistance - container[0][config.scrollOffset]) * 0.3, 10));
71        newScrollOffset = Math.min(container[0][config.scrollOffset] + theStep, scrollDistance);
72      } else {
73        newScrollOffset = Math.min(container[0][config.scrollOffset] + config.step, scrollDistance);
74      }
75      container[0][config.scrollOffset] = newScrollOffset;
76
77      if (newScrollOffset >= scrollDistance) {
78        for (i = 0; i < config.switchItems; i++) {
79          if (config.queue && config.queue.find(config.listItemElement).length > 0) {
80            containerUL.append(config.queue.find(config.listItemElement)[0]);
81            containerUL.children(config.listItemElement + ':first-child').remove();
82          } else {
83            containerUL.append(containerUL.children(config.listItemElement + ':first-child'));
84          }
85        }
86        container[0][config.scrollOffset] = 0;
87        clearInterval(scrollingId);
88        if (config.autoPlay) {
89          nextScrollId = setTimeout(forward, config.delay * 1000);
90        }
91      }
92    };
93
94    // Backward
95    // 1. If forwarding, then reverse
96    // 2. If stoping, then backward once
97    scrollBackward = function() {
98      if (paused) {
99        return;
100      }
101      var curLi,
102          i,
103          liLen,
104          newScrollOffset,
105          scrollDistance,
106          theStep;
107
108      // init
109      if (container[0][config.scrollOffset] === 0) {
110        liLen = containerUL.children(config.listItemElement).length;
111        for (i = 0; i < config.switchItems; i++) {
112          containerUL.children(config.listItemElement + ':last-child').insertBefore(containerUL.children(config.listItemElement+':first-child'));
113        }
114
115        curLi = containerUL.children(config.listItemElement + ':first-child');
116        scrollDistance = config.distance !== 'auto' ?
117            config.distance :
118            config.direction === 'vertical' ? curLi.height() : curLi.width();
119        container[0][config.scrollOffset] = scrollDistance;
120      }
121
122      // new offset
123      if (!config.linear) {
124        theStep = Math.max(3, parseInt(container[0][config.scrollOffset] * 0.3, 10));
125        newScrollOffset = Math.max(container[0][config.scrollOffset] - theStep, 0);
126      } else {
127        newScrollOffset = Math.max(container[0][config.scrollOffset] - config.step, 0);
128      }
129      container[0][config.scrollOffset] = newScrollOffset;
130
131      if (newScrollOffset === 0) {
132        clearInterval(scrollingId);
133        if (config.autoPlay) {
134          nextScrollId = setTimeout(forward, config.delay * 1000);
135        }
136      }
137    };
138
139    forward = function() {
140      clearInterval(scrollingId);
141      scrollingId = setInterval(scrollForward, config.speed);
142    };
143
144    backward = function() {
145      clearInterval(scrollingId);
146      scrollingId = setInterval(scrollBackward, config.speed);
147    };
148
149    resetClock = function(delay) {
150      config.delay = delay || config.delay;
151      clearTimeout(nextScrollId);
152      if (config.autoPlay) {
153        nextScrollId = setTimeout(forward, config.delay * 1000);
154      }
155    };
156
157    if (config.autoPlay) {
158      nextScrollId = setTimeout(forward, config.startDelay * 1000);
159    }
160
161    // bind events for container
162    container.bind('resetClock', function(delay) { resetClock(delay); });
163    container.bind('forward', function() { clearTimeout(nextScrollId); forward(); });
164    container.bind('backward', function() { clearTimeout(nextScrollId); backward(); });
165    container.bind('speedUp', function(speed) {
166      if (typeof speed === 'undefined') {
167        speed = Math.max(1, parseInt(config.speed / 2, 10));
168      }
169      config.speed = speed;
170    });
171    container.bind('speedDown', function(speed) {
172      if (typeof speed === 'undefined') {
173        speed = config.speed * 2;
174      }
175      config.speed = speed;
176    });
177  });
178};
179
180}(jQuery));