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<title>Example: Dial With Image Background</title>
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<h1>Example: Dial With Image Background</h1>
<div class="yui3-g">
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<div class="content"><div class="intro">
<p>This example shows how to create a <code>Dial</code> widget using background images for the ring and the handle.</p>
</div>
<div class="example yui3-skin-sam">
<style>
.example {
text-align:center;
*text-align: left;
}
.yui3-skin-sam .yui3-dial-content .yui3-dial-handle{
background:url(../assets/dial/images/ball_bearing.png) no-repeat;
opacity:1; /* Normally the handle is not full opacity in non-VML case */
}
.yui3-skin-sam .yui3-dial-content .yui3-dial-ring{
box-shadow: none;
-moz-border-radius: none;
-webkit-border-radius: none;
-moz-box-shadow: none;
-webkit-box-shadow: none;
background:url(../assets/dial/images/bkg_ring_of_lines.png) no-repeat scroll 0px 0px;
}
.yui3-skin-sam .yui3-dial-content .yui3-dial-center-button {
box-shadow: none;
-moz-border-radius: none;
-webkit-border-radius: none;
-moz-box-shadow: none;
background:none;
}
/* Hide all the VML ovals in IE. */
.yui3-skin-sam .yui3-dial-ring-vml v\:oval {
visibility:hidden;
}
/* Show the marker VML oval */
.yui3-skin-sam .yui3-dial-ring-vml .yui3-dial-marker-vml v\:oval {
visibility:visible;
}
.yui3-skin-sam .yui3-dial-content .yui3-dial-ring-vml{
background:url(../assets/dial/images/bkg_ring_of_lines.png) no-repeat scroll 0px 0px;
}
.yui3-skin-sam .yui3-dial-content .yui3-dial-handle-vml{
background:url(../assets/dial/images/ball_bearing_8.png) no-repeat scroll 0px 0px;
}
.yui3-skin-sam .yui3-dial-content .yui3-dial-center-button-vml {
background:url(../assets/dial/images/empty.png);
}
</style>
<div id="demo"></div>
<script>
YUI().use('dial', function(Y) {
var dial = new Y.Dial({
min:-220,
max:220,
stepsPerRevolution:100,
value: 30
});
dial.render('#demo');
});
</script>
</div>
<h3 id="creating-a-dial-with-images-as-backgrounds">Creating a Dial With Images as Backgrounds</h3>
<p>A <code>Dial</code> can be created that has its presentation determined by background images.
This can be done with CSS, providing the images can be contained within the dimensions of the <code>Dial</code> elements.
</p>
<h4 id="the-markup">The Markup</h4>
<p>
<strong>Note:</strong> be sure to add the <code>yui3-skin-sam</code> classname to the
page's <code><body></code> element or to a parent element of the widget in order to apply
the default CSS skin. See <a href="http://yuilibrary.com/yui/docs/tutorials/skins/">Understanding Skinning</a>.
</p>
<pre class="code prettyprint"><body class="yui3-skin-sam"> <!-- You need this skin class --></pre>
<p>The only markup requirement is an element to contain the <code>Dial</code></p>
<pre class="code prettyprint"><div id="demo"></div></pre>
<h4 id="the-javascript">The JavaScript</h4>
<p>The same JavaScript can be used as in the basic Dial example.</p>
<p><code>Dial</code> extends the <code>Widget</code> class, following the same pattern
as any widget constructor, accepting a configuration object to
set the initial configuration for the widget.</p>
<p>After creating and configuring the new <code>Dial</code>,
call the <code>render</code> method on your <code>Dial</code> object passing it
the selector of a container object.
This renders it in the container and makes it usable.</p>
<p>Some commonly used configuration attributes are shown below.
</p>
<pre class="code prettyprint">YUI().use('dial', function(Y) {
var dial = new Y.Dial({
min:-220,
max:220,
stepsPerRevolution:100,
value: 30
});
dial.render('#demo');
});</pre>
<h4 id="the-css">The CSS</h4>
<p>
In this example we add an image of a ball bearing to the dial <code>handle</code> object's background, this is the class <code>yui3-dial-handle</code>.</p>
<p>We'll also add an image of a circle of radial lines to the background ring object.
To make these changes, we only need to do two things. </p>
<ol>
<li>Remove some of the CSS styling on the elements we want to display as images.</li>
<li>Add the background URL to the image rule of the selectors of those objects as shown below.</li>
</ol>
<pre class="code prettyprint">.yui3-skin-sam .yui3-dial-content .yui3-dial-handle{
background:url(../assets/dial/images/ball_bearing.png) no-repeat;
opacity:1; /* Normally the handle is not full opacity in non-VML case */
}
.yui3-skin-sam .yui3-dial-content .yui3-dial-ring{
box-shadow: none;
-moz-border-radius: none;
-webkit-border-radius: none;
-moz-box-shadow: none;
-webkit-box-shadow: none;
background:url(../assets/dial/images/bkg_ring_of_lines.png) no-repeat scroll 0px 0px;
}
.yui3-skin-sam .yui3-dial-content .yui3-dial-center-button {
box-shadow: none;
-moz-border-radius: none;
-webkit-border-radius: none;
-moz-box-shadow: none;
background:none;
}
/* Hide all the VML ovals in IE. */
.yui3-skin-sam .yui3-dial-ring-vml v\:oval {
visibility:hidden;
}
/* Show the marker VML oval */
.yui3-skin-sam .yui3-dial-ring-vml .yui3-dial-marker-vml v\:oval {
visibility:visible;
}
.yui3-skin-sam .yui3-dial-content .yui3-dial-ring-vml{
background:url(../assets/dial/images/bkg_ring_of_lines.png) no-repeat scroll 0px 0px;
}
.yui3-skin-sam .yui3-dial-content .yui3-dial-handle-vml{
background:url(../assets/dial/images/ball_bearing_8.png) no-repeat scroll 0px 0px;
}
.yui3-skin-sam .yui3-dial-content .yui3-dial-center-button-vml {
background:url(../assets/dial/images/empty.png);
}</pre>
<h3 id="complete-example-source">Complete Example Source</h3>
<pre class="code prettyprint"><!DOCTYPE HTML>
<html>
<script src="http://yui.yahooapis.com/3.10.3/build/yui/yui-min.js"></script>
<style>
.yui3-skin-sam .yui3-dial-content .yui3-dial-handle{
background:url(../assets/dial/images/ball_bearing.png) no-repeat;
opacity:1; /* Normally the handle is not full opacity in non-VML case */
}
.yui3-skin-sam .yui3-dial-content .yui3-dial-ring{
box-shadow: none;
-moz-border-radius: none;
-webkit-border-radius: none;
-moz-box-shadow: none;
-webkit-box-shadow: none;
background:url(../assets/dial/images/bkg_ring_of_lines.png) no-repeat scroll 0px 0px;
}
.yui3-skin-sam .yui3-dial-content .yui3-dial-center-button {
box-shadow: none;
-moz-border-radius: none;
-webkit-border-radius: none;
-moz-box-shadow: none;
background:none;
}
/* Hide all the VML ovals in IE. */
.yui3-skin-sam .yui3-dial-ring-vml v\:oval {
visibility:hidden;
}
/* Show the marker VML oval */
.yui3-skin-sam .yui3-dial-ring-vml .yui3-dial-marker-vml v\:oval {
visibility:visible;
}
.yui3-skin-sam .yui3-dial-content .yui3-dial-ring-vml{
background:url(../assets/dial/images/bkg_ring_of_lines.png) no-repeat scroll 0px 0px;
}
.yui3-skin-sam .yui3-dial-content .yui3-dial-handle-vml{
background:url(../assets/dial/images/ball_bearing_8.png) no-repeat scroll 0px 0px;
}
.yui3-skin-sam .yui3-dial-content .yui3-dial-center-button-vml {
background:url(../assets/dial/images/empty.png);
}
</style>
<body class="yui3-skin-sam"> <!-- You need this skin class -->
<div id="demo"></div>
</body>
<script>
YUI().use('dial', function(Y) {
var dial = new Y.Dial({
min:-220,
max:220,
stepsPerRevolution:100,
value: 30
});
dial.render('#demo');
});
</script>
</html></pre>
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<div id="toc" class="sidebox">
<div class="hd">
<h2 class="no-toc">Table of Contents</h2>
</div>
<div class="bd">
<ul class="toc">
<li>
<a href="#creating-a-dial-with-images-as-backgrounds">Creating a Dial With Images as Backgrounds</a>
<ul class="toc">
<li>
<a href="#the-markup">The Markup</a>
</li>
<li>
<a href="#the-javascript">The JavaScript</a>
</li>
<li>
<a href="#the-css">The CSS</a>
</li>
</ul>
</li>
<li>
<a href="#complete-example-source">Complete Example Source</a>
</li>
</ul>
</div>
</div>
<div class="sidebox">
<div class="hd">
<h2 class="no-toc">Examples</h2>
</div>
<div class="bd">
<ul class="examples">
<li data-description="Create a Dial from existing markup on the page - a simple use case.">
<a href="dial-basic.html">Basic Dial</a>
</li>
<li data-description="Link a Dial with a text input field.">
<a href="dial-text-input.html">Dial Linked With Text Input</a>
</li>
<li data-description="Use image backgrounds to control the visual display of a Dial.">
<a href="dial-image-background.html">Dial With Image Background</a>
</li>
<li data-description="Use images to surround a Dial instance and provide additional styling.">
<a href="dial-image-surrounding.html">Dial With a Surrounding Image</a>
</li>
<li data-description="This example employs Dial to drive an interactive UI.">
<a href="dial-interactive.html">Dial With Interactive UI</a>
</li>
<li data-description="This example shows how to use Dial to animate an image sprite.">
<a href="duck.html">Image Sprite Animation with Dial</a>
</li>
</ul>
</div>
</div>
<div class="sidebox">
<div class="hd">
<h2 class="no-toc">Examples That Use This Component</h2>
</div>
<div class="bd">
<ul class="examples">
<li data-description="Use the HSL color picker to select a new color. Then chose the color type you like best.">
<a href="../color/hsl-picker.html">HSL Color Picker</a>
</li>
</ul>
</div>
</div>
</div>
</div>
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<script src="../assets/vendor/prettify/prettify-min.js"></script>
<script>prettyPrint();</script>
<script>
YUI.Env.Tests = {
examples: [],
project: '../assets',
assets: '../assets/dial',
name: 'dial-image-background',
title: 'Dial With Image Background',
newWindow: '',
auto: false
};
YUI.Env.Tests.examples.push('dial-basic');
YUI.Env.Tests.examples.push('dial-text-input');
YUI.Env.Tests.examples.push('dial-image-background');
YUI.Env.Tests.examples.push('dial-image-surrounding');
YUI.Env.Tests.examples.push('dial-interactive');
YUI.Env.Tests.examples.push('duck');
YUI.Env.Tests.examples.push('hsl-picker');
</script>
<script src="../assets/yui/test-runner.js"></script>
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