<!DOCTYPE html>
<html>
<head>
<script src="https://unpkg.com/konva@9.3.18/konva.min.js"></script>
<meta charset="utf-8" />
<title>Konva Image Events Demo</title>
<style>
body {
margin: 0;
padding: 0;
overflow: hidden;
background-color: #f0f0f0;
}
</style>
</head>
<body>
<div id="container"></div>
<script>
function writeMessage(message) {
text.text(message);
}
function loadImages(sources, callback) {
var images = {};
var loadedImages = 0;
var numImages = 0;
for (var src in sources) {
numImages++;
}
for (var src in sources) {
images[src] = new Image();
images[src].onload = function () {
if (++loadedImages >= numImages) {
callback(images);
}
};
images[src].src = sources[src];
}
}
function buildStage(images) {
var monkey = new Konva.Image({
image: images.monkey,
x: 120,
y: 50,
});
var lion = new Konva.Image({
image: images.lion,
x: 280,
y: 30,
});
monkey.on('mouseover', function () {
writeMessage('mouseover monkey');
});
monkey.on('mouseout', function () {
writeMessage('');
});
lion.on('mouseover', function () {
writeMessage('mouseover lion');
});
lion.on('mouseout', function () {
writeMessage('');
});
lion.cache();
lion.drawHitFromCache();
layer.add(monkey);
layer.add(lion);
layer.add(text);
stage.add(layer);
}
var stage = new Konva.Stage({
container: 'container',
width: 578,
height: 200,
});
var layer = new Konva.Layer();
var text = new Konva.Text({
x: 10,
y: 10,
fontFamily: 'Calibri',
fontSize: 24,
text: '',
fill: 'black',
});
var sources = {
lion: '/assets/lion.png',
monkey: '/assets/monkey.png',
};
loadImages(sources, buildStage);
</script>
</body>
</html>
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