Horizontal Slider with two thumbs
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Horizontal Slider with two thumbs</title>
<style type="text/css">
/*margin and padding on body element
can introduce errors in determining
element position and are not recommended;
we turn them off as a foundation for YUI
CSS treatments. */
body {
margin:0;
padding:0;
}
</style>
<link rel="stylesheet" type="text/css" href="yui_2.7.0b-lib/fonts/fonts-min.css" />
<link rel="stylesheet" type="text/css" href="yui_2.7.0b-lib/slider/assets/skins/sam/slider.css" />
<script type="text/javascript" src="yui_2.7.0b-lib/yahoo-dom-event/yahoo-dom-event.js"></script>
<script type="text/javascript" src="yui_2.7.0b-lib/animation/animation-min.js"></script>
<script type="text/javascript" src="yui_2.7.0b-lib/dragdrop/dragdrop-min.js"></script>
<script type="text/javascript" src="yui_2.7.0b-lib/slider/slider-min.js"></script>
<!--there is no custom header content for this example-->
</head>
<body class=" yui-skin-sam">
<h1>Horizontal Slider with two thumbs</h1>
<div class="exampleIntro">
<p>This example demonstrates a simple horizontal dual-thumb Slider implementation. Some characteristics to note include the following:</p>
<ul>
<li>The thumbs are set on a slide bar with a 200 pixel range.</li>
<li>A minimum distance is provided, preventing the thumbs from coming within 10 pixels of each other.</li>
<li>Initial min and max values are supplied as 100 and 130 respectively.</li>
<li>Clicking on the background will animate the nearest thumb.</li>
<li>Min and Max value offsets are calculated from the <strong>center</strong> of the thumbs and must be accounted for conversion calculations.</li>
</ul>
</div>
<!--BEGIN SOURCE CODE FOR EXAMPLE -->
<div id="demo_bg" class="yui-h-slider" title="Range slider">
<div id="demo_min_thumb" class="yui-slider-thumb"><img src="yui_2.7.0b-assets/slider-assets/left-thumb.png"></div>
<div id="demo_max_thumb" class="yui-slider-thumb"><img src="yui_2.7.0b-assets/slider-assets/right-thumb.png"></div>
</div>
<p>Raw values:
<label>Min: <input type="text" id="demo_from" size="3" maxlength="3" value=""></label>
<label>Max: <input type="text" id="demo_to" size="3" maxlength="3" value=""></label>
<button id="demo_btn">Update Slider</button>
<h3>Converted values:</h3>
<p id="demo_info"></p>
<script type="text/javascript">
(function () {
YAHOO.namespace('example');
var Dom = YAHOO.util.Dom;
// Slider has a range of 200 pixels
var range = 200;
// No ticks for this example
var tickSize = 0;
// We'll set a minimum distance the thumbs can be from one another
var minThumbDistance = 10;
// Initial values for the thumbs
var initValues = [100,130];
// Conversion factor from 0-200 pixels to 100-1000
// Note 20 pixels are subtracted from the range to account for the
// thumb values calculated from their center point (10 pixels from
// the center of the left thumb + 10 pixels from the center of the
// right thumb)
var cf = 900/(range - 20);
// Set up a function to convert the min and max values into something useful
var convert = function (val) {
return Math.round(val * cf + 100);
};
// Slider set up is done when the DOM is ready
YAHOO.util.Event.onDOMReady(function () {
var demo_bg = Dom.get("demo_bg"),
info = Dom.get("demo_info"),
from = Dom.get("demo_from"),
to = Dom.get("demo_to");
// Create the DualSlider
var slider = YAHOO.widget.Slider.getHorizDualSlider(demo_bg,
"demo_min_thumb", "demo_max_thumb",
range, tickSize, initValues);
slider.minRange = minThumbDistance;
// Custom function to update the text fields, the converted value
// report and the slider's title attribute
var updateUI = function () {
from.value = slider.minVal;
to.value = slider.maxVal;
// Update the converted values and the slider's title.
// Account for the thumb width offsetting the value range by
// subtracting the thumb width from the max value.
var min = convert(slider.minVal),
max = convert(slider.maxVal - 20);
info.innerHTML = "MIN: <strong>" + min + "</strong><br>" +
"MAX: <strong>" + max + "</strong>";
demo_bg.title = "Current range " + min + " - " + max;
};
// Subscribe to the dual thumb slider's change and ready events to
// report the state.
slider.subscribe('ready', updateUI);
slider.subscribe('change', updateUI);
// Wire up the button to update the slider
YAHOO.util.Event.on('demo_btn','click',function () {
// Get the int values from the inputs
var min = Math.abs(parseInt(from.value,10)|0),
max = Math.abs(parseInt(to.value,10)|0);
if (min > max) {
var hold = min;
min = max;
max = hold;
}
// Verify the values are in range
min = Math.min(min,range - 30);
max = Math.max(Math.min(max,range),min + 20 + minThumbDistance);
// Set the new values on the slider
slider.setValues(min,max);
});
// Attach the slider to the YAHOO.example namespace for public probing
YAHOO.example.slider = slider;
});
})();
</script>
<!--END SOURCE CODE FOR EXAMPLE -->
</body>
</html>
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