Created
August 30, 2013 14:21
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>x</title> | |
| <link rel="stylesheet" type="text/css" href="main.css"> | |
| <script type="text/javascript" src="http://code.jquery.com/jquery-1.10.2.min.js"></script> | |
| <script type="text/javascript" src="main.js"></script> | |
| </head> | |
| <body> | |
| <div id="x"> | |
| <div id="y"> | |
| <img id="z" src="http://bignanime.files.wordpress.com/2012/05/1245136944_1366x768_only-yesterday-by-studio-ghibli.jpeg"> | |
| <div id="lens"></div> | |
| </div> | |
| </div> | |
| </body> | |
| </html> |
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| #y { | |
| width: 200px; | |
| overflow: auto; | |
| } | |
| #z { | |
| max-height: 400px; | |
| width: auto; | |
| } | |
| #lens { | |
| display: none; | |
| position: fixed; | |
| top: 0; | |
| left: 0; | |
| width: 100px; | |
| height: 100px; | |
| background-color: red; | |
| border: 1px solid black; | |
| } |
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| jQuery(document).ready(function ($) { | |
| var img = $('#z'); | |
| var lens = $('#lens'); | |
| lens.css('background-image', 'url(' + img.attr('src') +')'); | |
| $('#y').on('mouseover, mousemove', function (e) { | |
| var y = $('#y'); | |
| var width = lens.width(); | |
| var height = lens.height(); | |
| var posX = e.clientX + $(document).scrollLeft(); | |
| var posY = e.clientY + $(document).scrollTop(); | |
| var imgX = -1 * (posX - y.offset().left + y.scrollLeft()); | |
| var imgY = -1 * (posY - y.offset().top + y.scrollTop()); | |
| var sizeX = img.width() * 2; | |
| var sizeY = img.height() * 2; | |
| imgX *= 2; | |
| imgY *= 2; | |
| imgX += (width / 2); | |
| imgY += (height / 2); | |
| lens.css({ | |
| display: 'block', | |
| top: e.clientY - (height / 2), | |
| left: e.clientX - (width / 2), | |
| 'background-size': "" + sizeX + "px " + sizeY + "px", | |
| 'background-position': "" + imgX + "px " + imgY + "px" | |
| }); | |
| if (posX > (y.offset().left + y.width()) || posX < y.offset().left) { | |
| lens.hide(); | |
| } | |
| if (posY > (y.offset().top + y.height()) || posY < y.offset().top) { | |
| lens.hide(); | |
| } | |
| }); | |
| }); |
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