comunic/tools/svgedit/extensions/imagelib/index.html
2016-11-19 12:08:12 +01:00

71 lines
1.8 KiB
HTML
Executable File

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta charset="utf-8" />
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4/jquery.min.js"></script>
</head>
<body>
<h1>Select an image:</h1>
<a href="smiley.svg">smiley.svg</a>
<br>
<a href="../../images/logo.png">logo.png</a>
<script>
/*globals $*/
/*jslint vars: true*/
$('a').click(function() {'use strict';
var meta_str;
var href = this.href;
var target = window.parent;
// Convert Non-SVG images to data URL first
// (this could also have been done server-side by the library)
if (this.href.indexOf('.svg') === -1) {
meta_str = JSON.stringify({
name: $(this).text(),
id: href
});
target.postMessage(meta_str, '*');
var img = new Image();
img.onload = function() {
var canvas = document.createElement('canvas');
canvas.width = this.width;
canvas.height = this.height;
// load the raster image into the canvas
canvas.getContext('2d').drawImage(this, 0, 0);
// retrieve the data: URL
var dataurl;
try {
dataurl = canvas.toDataURL();
} catch(err) {
// This fails in Firefox with file:// URLs :(
alert("Data URL conversion failed: " + err);
dataurl = "";
}
target.postMessage('|' + href + '|' + dataurl, '*');
};
img.src = href;
} else {
// Send metadata (also indicates file is about to be sent)
meta_str = JSON.stringify({
name: $(this).text(),
id: href
});
target.postMessage(meta_str, '*');
// Do ajax request for image's href value
$.get(href, function(data) {
data = '|' + href + '|' + data;
// This is where the magic happens!
target.postMessage(data, '*');
}, 'html'); // 'html' is necessary to keep returned data as a string
}
return false;
});
</script>
</body>
</html>