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Find way to halt jCarousel Lite on mouseover

My jCarousel Lite code is working just fine but I'd like to stop the auto scrolling of the images when the mouse hovers over any of the images inside the jCarousel Lite DIV container.

Here's a link to the demo:
http://www.gmarwaha.com/jquery/jcarousellite/index.php

Just click on Auto Scroll  in the right hand part of that screen for the demo.

Or, if you have no idea how to do this, then I also need a way to NOT preload the images. I'd rather they load only the images I select or add them as they're  displayed.  I've l ooked at lots of sliders / carousels and prefer NOT to use something different.

So, either of these if solved will get you awarded the points.

This is all based on jcarousellite_1.0.1.min.js.
0
Qsorb
Asked:
Qsorb
  • 4
1 Solution
 
hieloCommented:
.
0
 
hieloCommented:
Sorry about that.
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
 "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<script type="text/javascript" src="http://www.gmarwaha.com/js/lib/lib.min.js"></script>
<script type="text/javascript">
<!--
/**
 * jCarouselLite - jQuery plugin to navigate images/any content in a carousel style widget.
 * @requires jQuery v1.2 or above
 *
 * http://gmarwaha.com/jquery/jcarousellite/
 *
 * Copyright (c) 2007 Ganeshji Marwaha (gmarwaha.com)
 * Dual licensed under the MIT and GPL licenses:
 * http://www.opensource.org/licenses/mit-license.php
 * http://www.gnu.org/licenses/gpl.html
 *
 * Version: 1.0.1
 * Note: Requires jquery 1.2 or above from version 1.0.1
 */

/**
 * Creates a carousel-style navigation widget for images/any-content from a simple HTML markup.
 *
 * The HTML markup that is used to build the carousel can be as simple as...
 *
 *  <div class="carousel">
 *      <ul>
 *          <li><img src="image/1.jpg" alt="1"></li>
 *          <li><img src="image/2.jpg" alt="2"></li>
 *          <li><img src="image/3.jpg" alt="3"></li>
 *      </ul>
 *  </div>
 *
 * As you can see, this snippet is nothing but a simple div containing an unordered list of images.
 * You don't need any special "class" attribute, or a special "css" file for this plugin.
 * I am using a class attribute just for the sake of explanation here.
 *
 * To navigate the elements of the carousel, you need some kind of navigation buttons.
 * For example, you will need a "previous" button to go backward, and a "next" button to go forward.
 * This need not be part of the carousel "div" itself. It can be any element in your page.
 * Lets assume that the following elements in your document can be used as next, and prev buttons...
 *
 * <button class="prev">&lt;&lt;</button>
 * <button class="next">&gt;&gt;</button>
 *
 * Now, all you need to do is call the carousel component on the div element that represents it, and pass in the
 * navigation buttons as options.
 *
 * $(".carousel").jCarouselLite({
 *      btnNext: ".next",
 *      btnPrev: ".prev"
 * });
 *
 * That's it, you would have now converted your raw div, into a magnificient carousel.
 *
 * There are quite a few other options that you can use to customize it though.
 * Each will be explained with an example below.
 *
 * @param an options object - You can specify all the options shown below as an options object param.
 *
 * @option btnPrev, btnNext : string - no defaults
 * @example
 * $(".carousel").jCarouselLite({
 *      btnNext: ".next",
 *      btnPrev: ".prev"
 * });
 * @desc Creates a basic carousel. Clicking "btnPrev" navigates backwards and "btnNext" navigates forward.
 *
 * @option btnGo - array - no defaults
 * @example
 * $(".carousel").jCarouselLite({
 *      btnNext: ".next",
 *      btnPrev: ".prev",
 *      btnGo: [".0", ".1", ".2"]
 * });
 * @desc If you don't want next and previous buttons for navigation, instead you prefer custom navigation based on
 * the item number within the carousel, you can use this option. Just supply an array of selectors for each element
 * in the carousel. The index of the array represents the index of the element. What i mean is, if the
 * first element in the array is ".0", it means that when the element represented by ".0" is clicked, the carousel
 * will slide to the first element and so on and so forth. This feature is very powerful. For example, i made a tabbed
 * interface out of it by making my navigation elements styled like tabs in css. As the carousel is capable of holding
 * any content, not just images, you can have a very simple tabbed navigation in minutes without using any other plugin.
 * The best part is that, the tab will "slide" based on the provided effect. :-)
 *
 * @option mouseWheel : boolean - default is false
 * @example
 * $(".carousel").jCarouselLite({
 *      mouseWheel: true
 * });
 * @desc The carousel can also be navigated using the mouse wheel interface of a scroll mouse instead of using buttons.
 * To get this feature working, you have to do 2 things. First, you have to include the mouse-wheel plugin from brandon.
 * Second, you will have to set the option "mouseWheel" to true. That's it, now you will be able to navigate your carousel
 * using the mouse wheel. Using buttons and mouseWheel or not mutually exclusive. You can still have buttons for navigation
 * as well. They complement each other. To use both together, just supply the options required for both as shown below.
 * @example
 * $(".carousel").jCarouselLite({
 *      btnNext: ".next",
 *      btnPrev: ".prev",
 *      mouseWheel: true
 * });
 *
 * @option auto : number - default is null, meaning autoscroll is disabled by default
 * @example
 * $(".carousel").jCarouselLite({
 *      auto: 800,
 *      speed: 500
 * });
 * @desc You can make your carousel auto-navigate itself by specfying a millisecond value in this option.
 * The value you specify is the amount of time between 2 slides. The default is null, and that disables auto scrolling.
 * Specify this value and magically your carousel will start auto scrolling.
 *
 * @option speed : number - 200 is default
 * @example
 * $(".carousel").jCarouselLite({
 *      btnNext: ".next",
 *      btnPrev: ".prev",
 *      speed: 800
 * });
 * @desc Specifying a speed will slow-down or speed-up the sliding speed of your carousel. Try it out with
 * different speeds like 800, 600, 1500 etc. Providing 0, will remove the slide effect.
 *
 * @option easing : string - no easing effects by default.
 * @example
 * $(".carousel").jCarouselLite({
 *      btnNext: ".next",
 *      btnPrev: ".prev",
 *      easing: "bounceout"
 * });
 * @desc You can specify any easing effect. Note: You need easing plugin for that. Once specified,
 * the carousel will slide based on the provided easing effect.
 *
 * @option vertical : boolean - default is false
 * @example
 * $(".carousel").jCarouselLite({
 *      btnNext: ".next",
 *      btnPrev: ".prev",
 *      vertical: true
 * });
 * @desc Determines the direction of the carousel. true, means the carousel will display vertically. The next and
 * prev buttons will slide the items vertically as well. The default is false, which means that the carousel will
 * display horizontally. The next and prev items will slide the items from left-right in this case.
 *
 * @option circular : boolean - default is true
 * @example
 * $(".carousel").jCarouselLite({
 *      btnNext: ".next",
 *      btnPrev: ".prev",
 *      circular: false
 * });
 * @desc Setting it to true enables circular navigation. This means, if you click "next" after you reach the last
 * element, you will automatically slide to the first element and vice versa. If you set circular to false, then
 * if you click on the "next" button after you reach the last element, you will stay in the last element itself
 * and similarly for "previous" button and first element.
 *
 * @option visible : number - default is 3
 * @example
 * $(".carousel").jCarouselLite({
 *      btnNext: ".next",
 *      btnPrev: ".prev",
 *      visible: 4
 * });
 * @desc This specifies the number of items visible at all times within the carousel. The default is 3.
 * You are even free to experiment with real numbers. Eg: "3.5" will have 3 items fully visible and the
 * last item half visible. This gives you the effect of showing the user that there are more images to the right.
 *
 * @option start : number - default is 0
 * @example
 * $(".carousel").jCarouselLite({
 *      btnNext: ".next",
 *      btnPrev: ".prev",
 *      start: 2
 * });
 * @desc You can specify from which item the carousel should start. Remember, the first item in the carousel
 * has a start of 0, and so on.
 *
 * @option scrool : number - default is 1
 * @example
 * $(".carousel").jCarouselLite({
 *      btnNext: ".next",
 *      btnPrev: ".prev",
 *      scroll: 2
 * });
 * @desc The number of items that should scroll/slide when you click the next/prev navigation buttons. By
 * default, only one item is scrolled, but you may set it to any number. Eg: setting it to "2" will scroll
 * 2 items when you click the next or previous buttons.
 *
 * @option beforeStart, afterEnd : function - callbacks
 * @example
 * $(".carousel").jCarouselLite({
 *      btnNext: ".next",
 *      btnPrev: ".prev",
 *      beforeStart: function(a) {
 *          alert("Before animation starts:" + a);
 *      },
 *      afterEnd: function(a) {
 *          alert("After animation ends:" + a);
 *      }
 * });
 * @desc If you wanted to do some logic in your page before the slide starts and after the slide ends, you can
 * register these 2 callbacks. The functions will be passed an argument that represents an array of elements that
 * are visible at the time of callback.
 *
 *
 * @cat Plugins/Image Gallery
 * @author Ganeshji Marwaha/ganeshread@gmail.com
 */

(function($) {                                          // Compliant with jquery.noConflict()
$.fn.jCarouselLite = function(o) {
    o = $.extend({
        btnPrev: null,
        btnNext: null,
        btnGo: null,
        mouseWheel: false,
        auto: null,

        speed: 200,
        easing: null,

        vertical: false,
        circular: true,
        visible: 3,
        start: 0,
        scroll: 1,
	   pause:false,
        beforeStart: null,
        afterEnd: null
    }, o || {});

    return this.each(function() {                           // Returns the element collection. Chainable.

        var running = false, animCss=o.vertical?"top":"left", sizeCss=o.vertical?"height":"width";
        var div = $(this), ul = $("ul", div), tLi = $("li", ul), tl = tLi.size(), v = o.visible;

        if(o.circular) {
            ul.prepend(tLi.slice(tl-v-1+1).clone())
              .append(tLi.slice(0,v).clone());
            o.start += v;
        }

        var li = $("li", ul), itemLength = li.size(), curr = o.start;
        div.css("visibility", "visible");

        li.css({overflow: "hidden", float: o.vertical ? "none" : "left"});
        ul.css({margin: "0", padding: "0", position: "relative", "list-style-type": "none", "z-index": "1"});
        div.css({overflow: "hidden", position: "relative", "z-index": "2", left: "0px"});

        var liSize = o.vertical ? height(li) : width(li);   // Full li size(incl margin)-Used for animation
        var ulSize = liSize * itemLength;                   // size of full ul(total length, not just for the visible items)
        var divSize = liSize * v;                           // size of entire div(total length for just the visible items)

        li.css({width: li.width(), height: li.height()});
        ul.css(sizeCss, ulSize+"px").css(animCss, -(curr*liSize));

        div.css(sizeCss, divSize+"px");                     // Width of the DIV. length of visible images

        if(o.btnPrev)
            $(o.btnPrev).click(function() {
                return go(curr-o.scroll);
            });

        if(o.btnNext)
            $(o.btnNext).click(function() {
                return go(curr+o.scroll);
            });

        if(o.btnGo)
            $.each(o.btnGo, function(i, val) {
                $(val).click(function() {
                    return go(o.circular ? o.visible+i : i);
                });
            });

        if(o.mouseWheel && div.mousewheel)
            div.mousewheel(function(e, d) {
                return d>0 ? go(curr-o.scroll) : go(curr+o.scroll);
            });

        if(o.auto)
            o.pause=setInterval(function() {
                go(curr+o.scroll);
            }, o.auto+o.speed);

		if(false!==o.pause){			
			this.onmouseover=function(){o.pause=clearTimeout(o.pause);};
			this.onmouseout=function(){
				o.pause=setInterval(function() {
                		go(curr+o.scroll);
            		}, o.auto+o.speed);
			};
		}
        function vis() {
            return li.slice(curr).slice(0,v);
        };

        function go(to) {
            if(!running) {

                if(o.beforeStart)
                    o.beforeStart.call(this, vis());

                if(o.circular) {            // If circular we are in first or last, then goto the other end
                    if(to<=o.start-v-1) {           // If first, then goto last
                        ul.css(animCss, -((itemLength-(v*2))*liSize)+"px");
                        // If "scroll" > 1, then the "to" might not be equal to the condition; it can be lesser depending on the number of elements.
                        curr = to==o.start-v-1 ? itemLength-(v*2)-1 : itemLength-(v*2)-o.scroll;
                    } else if(to>=itemLength-v+1) { // If last, then goto first
                        ul.css(animCss, -( (v) * liSize ) + "px" );
                        // If "scroll" > 1, then the "to" might not be equal to the condition; it can be greater depending on the number of elements.
                        curr = to==itemLength-v+1 ? v+1 : v+o.scroll;
                    } else curr = to;
                } else {                    // If non-circular and to points to first or last, we just return.
                    if(to<0 || to>itemLength-v) return;
                    else curr = to;
                }                           // If neither overrides it, the curr will still be "to" and we can proceed.

                running = true;

                ul.animate(
                    animCss == "left" ? { left: -(curr*liSize) } : { top: -(curr*liSize) } , o.speed, o.easing,
                    function() {
                        if(o.afterEnd)
                            o.afterEnd.call(this, vis());
                        running = false;
                    }
                );
                // Disable buttons when the carousel reaches the last/first, and enable when not
                if(!o.circular) {
                    $(o.btnPrev + "," + o.btnNext).removeClass("disabled");
                    $( (curr-o.scroll<0 && o.btnPrev)
                        ||
                       (curr+o.scroll > itemLength-v && o.btnNext)
                        ||
                       []
                     ).addClass("disabled");
                }

            }
            return false;
        };
    });
};

function css(el, prop) {
    return parseInt($.css(el[0], prop)) || 0;
};
function width(el) {
    return  el[0].offsetWidth + css(el, 'marginLeft') + css(el, 'marginRight');
};
function height(el) {
    return el[0].offsetHeight + css(el, 'marginTop') + css(el, 'marginBottom');
};

})(jQuery);
//-->
</script>
<script language="JavaScript" type="text/javascript">
<!--
$(function() {
    $(".main .jCarouselLite").jCarouselLite({
        btnNext: ".main .next",
        btnPrev: ".main .prev",
        speed:500,
        easing: "easeinout",
	   auto:true,
	   pause:true
    });       
});
//-->
</script>

</head>
<body>
<div class="carousel main">
            <a href="#" class="prev">&nbsp</a>
            <div class="jCarouselLite">
                <ul>
                    <li><img src="http://www.gmarwaha.com/jquery/jcarousellite/image/1.jpg" alt="" width="150" height="118"></li>

                    <li><img src="http://www.gmarwaha.com/jquery/jcarousellite/image/2.jpg" alt="" width="150" height="118"></li>
                    <li><img src="http://www.gmarwaha.com/jquery/jcarousellite/image/3.jpg" alt="" width="150" height="118"></li>
                    <li><img src="http://www.gmarwaha.com/jquery/jcarousellite/image/4.jpg" alt="" width="150" height="118"></li>
                    <li><img src="http://www.gmarwaha.com/jquery/jcarousellite/image/5.jpg" alt="" width="150" height="118"></li>
                    <li><img src="http://www.gmarwaha.com/jquery/jcarousellite/image/6.jpg" alt="" width="150" height="118"></li>
                    <li><img src="http://www.gmarwaha.com/jquery/jcarousellite/image/7.jpg" alt="" width="150" height="118"></li>
                    <li><img src="http://www.gmarwaha.com/jquery/jcarousellite/image/8.jpg" alt="" width="150" height="118"></li>
                    <li><img src="http://www.gmarwaha.com/jquery/jcarousellite/image/9.jpg" alt="" width="150" height="118"></li>
                    <li><img src="http://www.gmarwaha.com/jquery/jcarousellite/image/10.jpg" alt="" width="150" height="118"></li>

                    <li><img src="http://www.gmarwaha.com/jquery/jcarousellite/image/11.jpg" alt="" width="150" height="118"></li>
                </ul>
            </div>
            <a href="#" class="next">&nbsp</a>
            <div class="clear"></div>   
        </div>       
</body>
</html>

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0
 
HainKurtSr. System AnalystCommented:
here it is ;)
<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Q_24992144.aspx.vb" Inherits="Q_24992144" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Untitled Page</title>
    <script type="text/javascript" src="js/jquery-1.3.2.min.js"></script>
    <script type="text/javascript" src="js/jcarousellite_1.0.1.js"></script>
    <script type="text/javascript" src="js/jquery.easing.1.1.js"></script>
    <script type="text/javascript">
var t;
$(document).ready(function(){
    slideResume();
    t=setTimeout("clickNext()",1000);
});

function slideResume(){
$(".divSlide").jCarouselLite({
    auto: null,
    speed: 200,
    btnNext: ".next",
    btnPrev: ".prev"
});
}

function clickNext(){
    document.getElementById('btnNext').click(); 
    t=setTimeout("clickNext()",1000);
}

function slideStop(){
    clearTimeout(t);
}
    </script>

</head>
<body>
    <form id="form1" runat="server">
    <div>

<button class="prev" id=btnPrev style="display:none;"><<</button>
<button class="next" id=btnNext style="display:none;">>></button>
        
<div class="divSlide" onmouseover="slideStop()" onmouseout="clickNext()">
    <ul>
        <li><img src="images/slide/1.jpg" alt="" width="100" height="100" ></li>
        <li><img src="images/slide/2.jpg" alt="" width="100" height="100" ></li>
        <li><img src="images/slide/3.jpg" alt="" width="100" height="100" ></li>
        <li><img src="images/slide/4.jpg" alt="" width="100" height="100" ></li>
        <li><img src="images/slide/5.jpg" alt="" width="100" height="100" ></li>
        <li><img src="images/slide/6.jpg" alt="" width="100" height="100" ></li>
        <li><img src="images/slide/7.jpg" alt="" width="100" height="100" ></li>
        <li><img src="images/slide/8.jpg" alt="" width="100" height="100" ></li>
        <li><img src="images/slide/9.jpg" alt="" width="100" height="100" ></li>
    </ul>
</div>

    </div>
    </form>
</body>
</html>

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hieloCommented:
In case it's not clear, lines 10-359 is "THE" modified/updated plugin and to enable the pausing feature you seek you just need to pass the option:
pause:true
0
 
QsorbAuthor Commented:
HainKurt: I couldn't get your suggestion to work with everything I needed. Probably my fault but anyway, Hhielo was first and I was able to use it. Much thanks to both of you. Now I'll post a question on how to NOT preload the images which can be a big problem when there are hundreds or even thousands of images per page or area.
0
 
hieloCommented:
Author Comments:
HainKurt: I couldn't get your suggestion to work with everything I needed. ..
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