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index.html
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index.html
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<!DOCTYPE HTML>
<html>
<head>
<!-- twitter bootstrap CSS stylesheet - not required by cornerstone -->
<link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
<style>
.overlay {
/* prevent text selection on overlay */
-webkit-touch-callout: none;
-webkit-user-select: none;
-khtml-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
user-select: none;
/* ignore pointer event on overlay */
pointer-events: none;
}
</style>
</head>
<body>
<div class="container">
<h1>
scrollzoompanwl/index.html
</h1>
This is an example of interactive series scroll, pan, zoom and window/level with HTML
based overlays.
<br>
<br>
Controls:
<ul>
<li>Left click drag - window/level</li>
<li>Middle Mouse button drag - pan</li>
<li>Right click drag - zoom</li>
<li>Mouse wheel - scroll images</li>
</ul>
<button id="x256" class="btn">256x256</button>
<button id="x512" class="btn">512x512</button>
<button id="invert" class="btn">Toggle Invert</button>
<button id="interpolation" class="btn">Toggle Interpolation</button>
<button id="hflip" class="btn">Horizontal Flip</button>
<button id="vflip" class="btn">Vertical Flip</button>
<button id="rotate" class="btn">Rotate 90</button>
<br>
<br>
<div id="dicomImageWrapper" style="width:512px;height:512px;position:relative;color:white"
oncontextmenu="return false"
onmousedown="return false">
<div id="dicomImage"
style="width:512px;height:512px;top:0px;left:0px;position:absolute">
</div>
<div id="topleft" class="overlay" style="position:absolute;top:0px;left:0px">
Patient Name
</div>
<div id="topright" class="overlay" style="position:absolute;top:0px;right:0px">
Render Time:
</div>
<div id="bottomright" class="overlay" style="position:absolute;bottom:0px;right:0px">
Zoom:
</div>
<div id="bottomleft" class="overlay" style="position:absolute;bottom:0px;left:0px">
WW/WC:
</div>
</div>
<div><span id="coords"></span></div>
</div>
</body>
<!-- include the cornerstone library -->
<script src="../../dist/cornerstone.js"></script>
<script>window.cornerstone || document.write('<script src="https://unpkg.com/cornerstone-core">\x3C/script>')</script>
<!-- include special code for these examples which provides images -->
<script src="../exampleImageIdLoader.js"></script>
<script>
const imageIds = [
'example://1',
'example://2'
];
let currentImageIndex = 0;
// updates the image display
function updateTheImage(imageIndex) {
return cornerstone.loadAndCacheImage(imageIds[imageIndex]).then(function(image) {
currentImageIndex = imageIndex;
const viewport = cornerstone.getViewport(element);
cornerstone.displayImage(element, image, viewport);
});
}
// image enable the element
const element = document.getElementById('dicomImage');
cornerstone.enable(element);
// setup handlers before we display the image
function onImageRendered(e) {
const eventData = e.detail;
// set the canvas context to the image coordinate system
cornerstone.setToPixelCoordinateSystem(eventData.enabledElement, eventData.canvasContext);
// NOTE: The coordinate system of the canvas is in image pixel space. Drawing
// to location 0,0 will be the top left of the image and rows,columns is the bottom
// right.
const context = eventData.canvasContext;
context.beginPath();
context.strokeStyle = 'white';
context.lineWidth = .5;
context.rect(128, 90, 50, 60);
context.stroke();
context.fillStyle = "white";
context.font = "6px Arial";
context.fillText("Tumor Here", 128, 85);
document.getElementById('topright').textContent = "Render Time:" + eventData.renderTimeInMs + " ms";
document.getElementById('bottomleft').textContent = "WW/WL:" + Math.round(eventData.viewport.voi.windowWidth) + "/" + Math.round(eventData.viewport.voi.windowCenter);
document.getElementById('bottomright').textContent = "Zoom:" + eventData.viewport.scale.toFixed(2);
}
element.addEventListener('cornerstoneimagerendered', onImageRendered);
// load and display the image
const imagePromise = updateTheImage(0);
// add handlers for mouse events once the image is loaded.
imagePromise.then(function() {
// add event handlers to pan image on mouse move
element.addEventListener('mousedown', function (e) {
let lastX = e.pageX;
let lastY = e.pageY;
const mouseButton = e.which;
function mouseMoveHandler(e) {
const deltaX = e.pageX - lastX;
const deltaY = e.pageY - lastY;
lastX = e.pageX;
lastY = e.pageY;
if (mouseButton === 1) {
let viewport = cornerstone.getViewport(element);
viewport.voi.windowWidth += (deltaX / viewport.scale);
viewport.voi.windowCenter += (deltaY / viewport.scale);
cornerstone.setViewport(element, viewport);
} else if (mouseButton === 2) {
let viewport = cornerstone.getViewport(element);
viewport.translation.x += (deltaX / viewport.scale);
viewport.translation.y += (deltaY / viewport.scale);
cornerstone.setViewport(element, viewport);
} else if (mouseButton === 3) {
let viewport = cornerstone.getViewport(element);
viewport.scale += (deltaY / 100);
cornerstone.setViewport(element, viewport);
}
}
function mouseUpHandler() {
document.removeEventListener('mouseup', mouseUpHandler);
document.removeEventListener('mousemove', mouseMoveHandler);
}
document.addEventListener('mousemove', mouseMoveHandler);
document.addEventListener('mouseup', mouseUpHandler);
});
const mouseWheelEvents = ['mousewheel', 'DOMMouseScroll'];
mouseWheelEvents.forEach(function(eventType) {
element.addEventListener(eventType, function (e) {
// Firefox e.detail > 0 scroll back, < 0 scroll forward
// chrome/safari e.wheelDelta < 0 scroll back, > 0 scroll forward
if (e.wheelDelta < 0 || e.detail > 0) {
if (currentImageIndex === 0) {
updateTheImage(1);
}
} else {
if (currentImageIndex === 1) {
updateTheImage(0);
}
}
// Prevent page from scrolling
return false;
});
});
// Add event handler to the ww/wc apply button
document.getElementById('x256').addEventListener('click', function (e) {
element.style.width = '256px';
element.style.height = '256px';
cornerstone.resize(element);
});
document.getElementById('x512').addEventListener('click', function (e) {
element.style.width = '512px';
element.style.height = '512px';
cornerstone.resize(element);
});
document.getElementById('invert').addEventListener('click', function (e) {
const viewport = cornerstone.getViewport(element);
viewport.invert = !viewport.invert;
cornerstone.setViewport(element, viewport);
});
document.getElementById('interpolation').addEventListener('click', function (e) {
const viewport = cornerstone.getViewport(element);
viewport.pixelReplication = !viewport.pixelReplication;
cornerstone.setViewport(element, viewport);
});
document.getElementById('hflip').addEventListener('click', function (e) {
const viewport = cornerstone.getViewport(element);
viewport.hflip = !viewport.hflip;
cornerstone.setViewport(element, viewport);
});
document.getElementById('vflip').addEventListener('click', function (e) {
const viewport = cornerstone.getViewport(element);
viewport.vflip = !viewport.vflip;
cornerstone.setViewport(element, viewport);
});
document.getElementById('rotate').addEventListener('click', function (e) {
const viewport = cornerstone.getViewport(element);
viewport.rotation += 90;
cornerstone.setViewport(element, viewport);
});
element.addEventListener('mousemove', function(event) {
const pixelCoords = cornerstone.pageToPixel(element, event.pageX, event.pageY);
document.getElementById('coords').textContent = "pageX=" + event.pageX + ", pageY=" + event.pageY + ", pixelX=" + pixelCoords.x + ", pixelY=" + pixelCoords.y;
});
});
</script>
</html>