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e635b8a
on abort reject promise
diego0020 Oct 21, 2018
6bbeffe
add to example
diego0020 Oct 21, 2018
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116 changes: 67 additions & 49 deletions examples/index.html
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Original file line number Diff line number Diff line change
@@ -1,5 +1,6 @@
<!DOCTYPE HTML>
<html>

<head>
<!-- twitter bootstrap CSS stylesheet - included to make things pretty, not needed or used by cornerstone -->
<SCRIPT src="cornerstone.min.js"></SCRIPT>
Expand All @@ -10,77 +11,85 @@
<script src="../dist/cornerstoneWebImageLoader.js"></script>
<script>window.cornerstoneWebImageLoader || document.write('<script src="https://unpkg.com/cornerstone-web-image-loader">\x3C/script>')</script>
</head>

<body>
<div class="container">

<div class="page-header">
<h1>Example of displaying a web image (JPEG, PNG) using Cornerstone</h1>
<p class="lead">
Enter a URL for a JPEG or PNG image below to view it using cornerstone
</p>
<p>
This example illustrates how to use the cornerstoneWebImageLoader to get a standard web
image (JPEG, PNG) and display it using cornerstone.
</p>
<strong>If you get an HTTP error and your URL is correct, it is probably because the server is not configured to
allow <a href="http://en.wikipedia.org/wiki/Cross-origin_resource_sharing">Cross Origin Requests</a>.
Most browsers will allow you to enable cross domain requests via settings or command line switches,
you can start chrome with the command line switch <code>--disable-web-security</code> to allow cross origin requests.
See the <a href="http://enable-cors.org/">Enable CORS site</a> for information about CORS.
</strong>
<br>
<br>
<strong>Use of this example require IE10+ or any other modern browser.</strong>
<div class="container">

<div class="page-header">
<h1>Example of displaying a web image (JPEG, PNG) using Cornerstone</h1>
<p class="lead">
Enter a URL for a JPEG or PNG image below to view it using cornerstone
</p>
<p>
This example illustrates how to use the cornerstoneWebImageLoader to get a standard web
image (JPEG, PNG) and display it using cornerstone.
</p>
<strong>If you get an HTTP error and your URL is correct, it is probably because the server is not
configured to
allow <a href="http://en.wikipedia.org/wiki/Cross-origin_resource_sharing">Cross Origin Requests</a>.
Most browsers will allow you to enable cross domain requests via settings or command line switches,
you can start chrome with the command line switch <code>--disable-web-security</code> to allow cross
origin requests.
See the <a href="http://enable-cors.org/">Enable CORS site</a> for information about CORS.
</strong>
<br>
<br>
<strong>Use of this example require IE10+ or any other modern browser.</strong>

</div>

<div class="row">
<form class="form-horizontal">
<div class="form-group">
<label class="control-label col-sm-1" for="wadoURL">URL</label>
<div class="col-sm-8">
<input class="form-control" type="text" id="wadoURL" placeholder="Enter URL" value="https://rawgit.com/cornerstonejs/cornerstoneWebImageLoader/master/examples/Renal_Cell_Carcinoma.jpg">
</div>

<div class="row">
<form class="form-horizontal">
<div class="form-group">
<label class="control-label col-sm-1" for="wadoURL">URL</label>
<div class="col-sm-8">
<input class="form-control" type="text" id="wadoURL" placeholder="Enter URL" value="https://rawgit.com/cornerstonejs/cornerstoneWebImageLoader/master/examples/Renal_Cell_Carcinoma.jpg">
</div>
<div class="col-sm-3">
<button class="form-control" type="button" id="downloadAndView" class="btn btn-primary">Download
and View</button>
</div>
</div>
<div class="col-sm-3">
<button class="form-control" type="button" id="downloadAndView" class="btn btn-primary">Download and View</button>
<div class="form-group">

<div class="col-sm-3 pull-right">

<button class="form-control" type="button" id="cancelRequest" class="btn btn-primary">Cancel
Request</button>
</div>
</div>
</div>
</form>
</div>
</form>
</div>

<div style="width:512px;height:512px;position:relative;color: white;display:inline-block;border-style:solid;border-color:black;"
oncontextmenu="return false"
class='disable-selection noIbar'
unselectable='on'
onselectstart='return false;'
onmousedown='return false;'>
<div id="dicomImage"
style="width:512px;height:512px;top:0px;left:0px; position:absolute">
<div style="width:512px;height:512px;position:relative;color: white;display:inline-block;border-style:solid;border-color:black;"
oncontextmenu="return false" class='disable-selection noIbar' unselectable='on' onselectstart='return false;'
onmousedown='return false;'>
<div id="dicomImage" style="width:512px;height:512px;top:0px;left:0px; position:absolute">
</div>
</div>
</div>
</div>
</body>



<script>
cornerstoneWebImageLoader.external.cornerstone = cornerstone;

cornerstoneWebImageLoader.configure({
beforeSend: function(xhr) {
// Add custom headers here (e.g. auth tokens)
//xhr.setRequestHeader('x-auth-token', 'my auth token');
}
beforeSend: function (xhr) {
// Add custom headers here (e.g. auth tokens)
//xhr.setRequestHeader('x-auth-token', 'my auth token');
}
});

document.getElementById('downloadAndView').addEventListener('click', function(e) {
document.getElementById('downloadAndView').addEventListener('click', function (e) {
const url = document.getElementById('wadoURL').value;

// image enable the dicomImage element and activate a few tools
const element = document.getElementById('dicomImage');
cornerstone.enable(element);
cornerstone.loadImage(url).then(function(image) {
cornerstone.loadAndCacheImage(url).then(function (image) {
cornerstone.displayImage(element, image);
cornerstoneTools.mouseInput.enable(element);
cornerstoneTools.mouseWheelInput.enable(element);
Expand All @@ -90,5 +99,14 @@ <h1>Example of displaying a web image (JPEG, PNG) using Cornerstone</h1>
cornerstoneTools.zoomWheel.activate(element); // zoom is the default tool for middle mouse wheel
});
});
document.getElementById('cancelRequest').addEventListener('click', function (e) {
const url = document.getElementById('wadoURL').value;
imgLoadObj = cornerstone.imageCache.getImageLoadObject(url);
if (imgLoadObj && imgLoadObj.cancelFn) {
imgLoadObj.cancelFn();
}
});

</script>
</html>

</html>
8 changes: 6 additions & 2 deletions src/loadImage.js
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Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,7 @@ import createImage from './createImage.js';
//
let options = {
// callback allowing customization of the xhr (e.g. adding custom auth headers, cors, etc)
beforeSend (/* xhr */) {}
beforeSend (/* xhr */) { }
};


Expand Down Expand Up @@ -51,11 +51,15 @@ export function loadImage (imageId) {
}, reject);
};

xhr.onabort = reject;

xhr.send();
});

const cancelFn = () => {
xhr.abort();
if (xhr.readyState < 4) {
xhr.abort();
}
};

return {
Expand Down