jQuery UI Content Slider Example

Use a slider to manipulate the positioning of content on the page. In this case, it acts as a scrollbar with the potential to capture values if needed.

by wholypantalones

HTML

<script src="http://jqueryui.com/ui/jquery.ui.widget.js"></script>
<script src="http://jqueryui.com/ui/jquery.ui.mouse.js"></script>
<script src="http://jqueryui.com/ui/jquery.ui.slider.js"></script>
<link rel="stylesheet" href="http://jqueryui.com/themes/base/jquery.ui.all.css">
<div class="scroll-pane ui-widget ui-widget-header ui-corner-all">
    <div class="scroll-content">
        <div class="scroll-content-item ui-widget-header">1</div>
        <div class="scroll-content-item ui-widget-header">2</div>
        <div class="scroll-content-item ui-widget-header">3</div>
        <div class="scroll-content-item ui-widget-header">4</div>
        
        <div class="scroll-content-item ui-widget-header">5</div>
        <div class="scroll-content-item ui-widget-header">6</div>
        <div class="scroll-content-item ui-widget-header">7</div>
        <div class="scroll-content-item ui-widget-header">8</div>
        <div class="scroll-content-item ui-widget-header">9</div>
        <div class="scroll-content-item ui-widget-header">10</div>
        
        <div class="scroll-content-item ui-widget-header">11</div>
        <div class="scroll-content-item ui-widget-header">12</div>
        <div class="scroll-content-item ui-widget-header">13</div>
        <div class="scroll-content-item ui-widget-header">14</div>
        <div class="scroll-content-item ui-widget-header">15</div>
        <div class="scroll-content-item ui-widget-header">16</div>
        
        <div class="scroll-content-item ui-widget-header">17</div>
        <div class="scroll-content-item ui-widget-header">18</div>
        <div class="scroll-content-item ui-widget-header">19</div>
        <div class="scroll-content-item ui-widget-header">20</div>
    </div>
    <div class="scroll-bar-wrap ui-widget-content ui-corner-bottom">
        <div class="scroll-bar"></div>
        
    </div>
</div>

CSS

#demo-frame > div.demo { padding: 10px !important;}
.scroll-pane { 
    overflow: auto;
    width: 99%; 
    float:left; }
.scroll-content { width: 2440px; float: left; }
.scroll-content-item {
    width: 100px;
    height: 100px;
    float: left; margin:10px;
    font-size: 3em;
    line-height: 96px;
    text-align: center;
}
* html .scroll-content-item { display: inline; } /* IE6 float double margin bug */
.scroll-bar-wrap {
    clear: left; 
    padding: 0 4px 0 2px; 
    margin: 0 -1px -1px -1px;
}
.scroll-bar-wrap .ui-slider { 
    background: none; 
    border:0; 
    height: 2em; 
    margin: 0 auto;
}
.scroll-bar-wrap .ui-handle-helper-parent { 
    position: relative; 
    width: 100%; 
    height: 100%; 
    margin: 0 auto;
}
.scroll-bar-wrap .ui-slider-handle { top:.2em; height: 1.5em; }   
.scroll-bar-wrap .ui-slider-handle .ui-icon { 
    margin: -8px auto 0; 
    position: relative; 
    top: 50%;
}

JavaScript

//scrollpane parts
var scrollPane = $(".scroll-pane"),
    scrollContent = $(".scroll-content");

//build slider
var scrollbar = $(".scroll-bar").slider({
    slide: function(event, ui) {
        if (scrollContent.width() > scrollPane.width()) {
            scrollContent.css("margin-left", Math.round(
            ui.value / 100 * (scrollPane.width() - scrollContent.width())) + "px");
        } else {
            scrollContent.css("margin-left", 0);
        }
    }
});

//append icon to handle
var handleHelper = scrollbar.find(".ui-slider-handle").mousedown(function() {
    scrollbar.width(handleHelper.width());
}).mouseup(function() {
    scrollbar.width("100%");
}).append("<span class='ui-icon ui-icon-grip-dotted-vertical'></span>").wrap("<div class='ui-handle-helper-parent'></div>").parent();

//change overflow to hidden now that slider handles the scrolling
scrollPane.css("overflow", "hidden");

//size scrollbar and handle proportionally to scroll distance

function sizeScrollbar() {
    var remainder = scrollContent.width() - scrollPane.width();
    var proportion = remainder / scrollContent.width();
    var handleSize = scrollPane.width() - (proportion * scrollPane.width());
    scrollbar.find(".ui-slider-handle").css({
        width: handleSize,
        "margin-left": -handleSize / 2
    });
    handleHelper.width("").width(scrollbar.width() - handleSize);
}

//reset slider value based on scroll content position

function resetValue() {
    var remainder = scrollPane.width() - scrollContent.width();
    var leftVal = scrollContent.css("margin-left") === "auto" ? 0 : parseInt(scrollContent.css("margin-left"));
    var percentage = Math.round(leftVal / remainder * 100);
    scrollbar.slider("value", percentage);
}

//if the slider is 100% and window gets larger, reveal content

function reflowContent() {
    var showing = scrollContent.width() + parseInt(scrollContent.css("margin-left"), 10);
    var gap = scrollPane.width() - showing;
    if (gap > 0) {
    ...