Overlaying a canvas over an iframe - HTML
I'm busy writing a servlet that generates HTML code. The goal is to create a heatmap of where people click on a website from stored data of those clicks. I've found javascript to create the heatmap in a canvas, and i now want to overlay that canvas over the webpage that the click information is about.
This is my HTML so far, which results i开发者_开发百科n the successful generation of the heatmap, and the creation of an iframe. The iframe is overlayed over the heatmap. Currently i dont know how to make the iframe the same size as the webpage so that it appears that the website is being viewed with the heatmap overlayed over it:
<html>
<head>
<style>
#heatmapArea{
position:relative;
float:left;
width:410px;
height:410px;
z-index:1000;
border:1px dashed black;
#iframeArea{
position:relative;
float:left;
width:100%;
height:100%
z-index:1;
}
}
</style>
</head>
<body>
<div id="main">
<div id="heatmapArea">
<div id="iframeArea">
<iframe src="www.google.com"></iframe>
</div>
</div>
</div>
<script type="text/javascript" src="heatmap.js"></script>
<script type="text/javascript">
window.onload = function(){
var xx = h337.create({"element":document.getElementById("heatmapArea"), "radius":10, "visible":true});
var el = "{max: 100, data: [{x: 20, y: 20, count: 10},{x: 200, y: 200, count: 43},{x: 200, y: 400, count: 7},{x: 380, y: 400, count: 6},{x: 400, y: 400, count: 4},{x: 280, y: 260, count: 100},{x: 80, y: 60, count: 40},{x: 166, y: 260, count: 85},{x: 300, y: 400, count: 34},]}";
var obj = eval('('+el+')');
xx.store.setDataSet(obj);
};
</script>
</body>
im a serious HTML newbie - what can i do to make what i want happen?
thanks a ton!
As I understand you want to do it in html and css. Then maybe:
Step 1:
Add this to your CSS: html, body {height: 100%;}
Step 2
Add this to your iframe class: position: absolute; width: 100%; height: 100%;
I created a quick fiddle to show you, how it works: http://jsfiddle.net/hobobne/a3muZ/
加载中,请稍侯......
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