jQuery UI & Slider: Slider with scrollbar

This entry is part 8 of 11 in the series jQuery UI Slider

jQuery UI Slider – Slider scrollbar

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.

<!doctype html>
<html lang='en'>
<head>
    <meta charset='utf-8'>
    <title>jQuery UI Slider - Slider scrollbar</title>
    <link rel='stylesheet' href='//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css'>
    <script src='//code.jquery.com/jquery-1.10.2.js'></script>
    <script src='//code.jquery.com/ui/1.10.4/jquery-ui.js'></script>
    <link rel='stylesheet' href='http://codecrawl.com/code/jqueryui/jqueryui_style.css'>
    <style>
        .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;
        }

        .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%;
        }
    </style>
    <script>
        $(function () {
            //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) {
                    scrollContent.css('margin-left', parseInt(scrollContent.css('margin-left'), 10) + gap);
                }
            }

            //change handle position on window resize
            $(window).resize(function () {
                resetValue();
                sizeScrollbar();
                reflowContent();
            });
            //init scrollbar size
            setTimeout(sizeScrollbar, 10);//safari wants a timeout
        });
    </script>
</head>
<body>

<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>

</body>
</html>
Try The Code Slider Widgets API Doc
Series Navigation<< jQuery UI & Slider: Multiple sliders
jQuery UI & Slider: Range >>

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