<!doctype html>
<html>
<head>
<script class="jsbin" src="http://code.jquery.com/jquery-1.7.2.min.js"></script>
<meta charset="utf-8">
<title>放大镜效果测试</title>
<style class="csscreations">/*Some CSS*/
* {margin: 0; padding: 0;}
.magnify {width: 200px; margin: 50px auto; position: relative;}
/*Lets create the magnifying glass*/
.large {
width: 175px; height: 175px;
position: absolute;
border-radius: 100%;
/*Multiple box shadows to achieve the glass effect*/
box-shadow: 0 0 0 7px rgba(255, 255, 255, 0.85),
0 0 7px 7px rgba(0, 0, 0, 0.25),
inset 0 0 40px 2px rgba(0, 0, 0, 0.25);
/*Lets load up the large image first*/
background: url('http://thecodeplayer.com/uploads/media/iphone.jpg') no-repeat;
/*hide the glass by default*/
display: none;
}
/*To solve overlap bug at the edges during magnification*/
.small { display: block; }</style></head>
<body>
<!-- Lets make a simple image magnifier -->
<div class="magnify">
<!-- This is the magnifying glass which will contain the original/large version -->
<div class="large"></div>
<!-- This is the small image -->
<img class="small" src="http://thecodeplayer.com/uploads/media/iphone.jpg" width="200"/>
</div>
<!-- Lets load up prefixfree to handle CSS3 vendor prefixes -->
<script src="http://thecodeplayer.com/uploads/js/prefixfree.js" type="text/javascript"></script>
<!-- You can download it from http://leaverou.github.com/prefixfree/ -->
<!-- Time for jquery action --></body>
</html><script>$(document).ready(function(){
$(document).ready(function(){
var native_width = 0;
var native_height = 0;
//Now the mousemove function
$(".magnify").mousemove(function(e){
//When the user hovers on the image, the script will first calculate
//the native dimensions if they don't exist. Only after the native dimensions
//are available, the script will show the zoomed version.
if(!native_width && !native_height)
{
//This will create a new image object with the same image as that in .small
//We cannot directly get the dimensions from .small because of the
//width specified to 200px in the html. To get the actual dimensions we have
//created this image object.
var image_object = new Image();
image_object.src = $(".small").attr("src");
//This code is wrapped in the .load function which is important.
//width and height of the object would return 0 if accessed before
//the image gets loaded.
native_width = image_object.width;
native_height = image_object.height;
}
else
{
//x/y coordinates of the mouse
//This is the position of .magnify with respect to the document.
var magnify_offset = $(this).offset();
//We will deduct the positions of .magnify from the mouse positions with
//respect to the document to get the mouse positions with respect to the
//container(.magnify)
var mx = e.pageX - magnify_offset.left;
var my = e.pageY - magnify_offset.top;
//Finally the code to fade out the glass if the mouse is outside the container
if(mx < $(this).width() && my < $(this).height() && mx > 0 && my > 0)
{
$(".large").fadeIn(100);
}
else
{
$(".large").fadeOut(100);
}
if($(".large").is(":visible"))
{
//The background position of .large will be changed according to the position
//of the mouse over the .small image. So we will get the ratio of the pixel
//under the mouse pointer with respect to the image and use that to position the
//large image inside the magnifying glass
var rx = Math.round(mx/$(".small").width()*native_width - $(".large").width()/2)*-1;
var ry = Math.round(my/$(".small").height()*native_height - $(".large").height()/2)*-1;
var bgp = rx + "px " + ry + "px";
//Time to move the magnifying glass with the mouse
var px = mx - $(".large").width()/2;
var py = my - $(".large").height()/2;
//Now the glass moves with the mouse
//The logic is to deduct half of the glass's width and height from the
//mouse coordinates to place it with its center at the mouse coordinates
//If you hover on the image now, you should see the magnifying glass in action
$(".large").css({left: px, top: py, backgroundPosition: bgp});
}
}
})
})
});</script>
<style>
<!--.Controls{position:absolute;z-index:9999;right:30px;top:10px;width:80px;height:30px;line-height:30px;background-color:#eee;opacity:0.5;font-size:10px;text-align:center;}
.Controls a{text-decoration:none;margin:10px 5px;}-->
.GoEdit{opacity: 0; position: fixed; top: -1px; right: -1px; padding: 5px 10px; background-color: rgb(204, 204, 204); color: rgb(51, 51, 51); text-shadow: rgb(255, 255, 255) 0px 1px 1px; border-top-right-radius: 5px; border: 1px solid rgb(153, 153, 153); text-decoration:
none; font-style: normal; font-variant: normal; font-weight: normal; font-size: 12px; line-height: normal; font-family: 'Helvetica Neue', Arial, Helvetica; -webkit-transition: opacity 100ms ease-out; background-position: initial initial; background-repeat:
initial initial; }
</style>
<script type="text/javascript" src="/tools/jsbin/edit.js"></script>
<script type="text/javascript">
var _bdhmProtocol = (("https:" == document.location.protocol) ? " https://" : " http://");
document.write(unescape("%3Cscript src='" + _bdhmProtocol + "hm.baidu.com/h.js%3F2b9232a7b0ced15280772333a4ec7c3a' type='text/javascript'%3E%3C/script%3E"));
</script>
<!-- Generated by OSCTools.NET (Tue Jul 24 23:17:56 CST 2012) 3ms -->
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