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demo-simple.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>OpenSeadragon Fabricjs Overlay Demo</title>
<script src="openseadragon/openseadragon.js"></script>
<script src="openseadragon-fabricjs-overlay.js"></script>
<script src="//code.jquery.com/jquery-1.11.2.min.js"></script>
<script src="fabric/fabric.adapted.js"></script>
<style>
html,
body,
.openseadragon1 {
width: 100%;
height: 100%;
margin: 0;
}
</style>
</head>
<body>
<div class="openseadragon1" id="contentDiv"></div>
<script>
// ----------
App = {
// ----------
init: function () {
let self = this
let tileSource = {
Image: {
xmlns: 'http://schemas.microsoft.com/deepzoom/2008',
Url: 'http://openseadragon.github.io/example-images/highsmith/highsmith_files/',
Format: 'jpg',
Overlap: '2',
TileSize: '256',
Size: {
Height: '9221',
Width: '7026'
}
}
}
let tileSourceIIIF = {
'@context': 'http://iiif.io/api/image/2/context.json',
'@id': 'https://libimages1.princeton.edu/loris/pudl0001%2F4609321%2Fs42%2F00000001.jp2',
height: 7200,
width: 5233,
profile: ['http://iiif.io/api/image/2/level2.json'],
protocol: 'http://iiif.io/api/image',
tiles: [{
scaleFactors: [1, 2, 4, 8, 16, 32],
width: 1024
}]
}
this.viewer = OpenSeadragon({
id: 'contentDiv',
prefixUrl: 'openseadragon/images/',
tileSources: [{
tileSource: tileSource,
width: 1,
y: 0,
x: 0
},
{
tileSource: tileSourceIIIF,
width: 1,
y: 0,
x: 1.1
}]
})
// Initialize overlay
let overlay = this.viewer.fabricjsOverlay()
// Add fabric rectangle
let rect = new fabric.Rect({
left: 0,
top: 0,
fill: 'red',
width: 200,
height: 200
})
overlay.fabricCanvas().add(rect)
// Add fabric circle
let circle = new fabric.Circle({
left: overlay.fabricCanvas().width * 2 - 200,
top: 0,
fill: 'green',
radius: 100,
selectable: true,
action: 'gravity'
})
overlay.fabricCanvas().add(circle)
// Create circle falling animation
circle.animate('top', '+=' + (overlay.fabricCanvas().height + 530), {
onChange: overlay.fabricCanvas().renderAll.bind(overlay.fabricCanvas()),
duration: 2000,
easing: fabric.util.ease.easeOutBounce
})
circle.animate('scaleY', '-=.1', {
onChange: overlay.fabricCanvas().renderAll.bind(overlay.fabricCanvas()),
duration: 1000
})
overlay.fabricCanvas().on('mouse:up', function (options) {
if (options.target && (options.target.action === 'gravity')) {
delta = overlay.fabricCanvas().height - options.target.top
if (delta > 0) {
circle.animate('top', '+=' + (delta + 550), {
onChange: overlay.fabricCanvas().renderAll.bind(overlay.fabricCanvas()),
duration: 2000,
easing: fabric.util.ease.easeOutBounce
})
circle.animate('scaleY', '-=.1', {
onChange: overlay.fabricCanvas().renderAll.bind(overlay.fabricCanvas()),
duration: 1000,
})
}
}
})
// Add fabric circle with text
let circle2 = new fabric.Circle({
left: overlay.fabricCanvas().width - 60,
top: 100,
fill: 'lightgray',
radius: 120,
selectable: false,
action: 'button'
})
overlay.fabricCanvas().add(circle2)
let text = new fabric.Text('Start\n drawing', {
left: overlay.fabricCanvas().width - 40,
top: 150,
fontSize: 50,
fontFamily: 'Helvetica',
textAlign: 'center',
fill: 'black',
selectable: false,
action: 'button'
})
overlay.fabricCanvas().add(text)
overlay.fabricCanvas().freeDrawingBrush.color = 'red'
overlay.fabricCanvas().freeDrawingBrush.width = 30
// Start free-drawing mode
overlay.fabricCanvas().on('mouse:down', function (options) {
if (options.target && (options.target.action === 'button')) {
self.viewer.setMouseNavEnabled(false)
self.viewer.outerTracker.setTracking(false)
circle2.set('fill', 'lightgreen')
overlay.fabricCanvas().isDrawingMode = true
}
})
// Fixed so you don't have to do this every time:
// $(window).resize(function () {
// overlay.resize()
// overlay.resizeCanvas()
// overlay.render()
// })
}
}
// ----------
$(document).ready(function () {
App.init()
})
</script>
</body>
</html>