<!DOCTYPE html>
<html>
<head>
<script src="https://unpkg.com/konva@9.3.18/konva.min.js"></script>
<meta charset="utf-8" />
<title>Konva Select Shape by id Demo</title>
<style>
body {
margin: 0;
padding: 0;
overflow: hidden;
background-color: #f0f0f0;
}
#buttons {
position: absolute;
top: 5px;
left: 10px;
}
#buttons > input {
padding: 10px;
display: block;
margin-top: 5px;
}
</style>
</head>
<body>
<div id="container"></div>
<div id="buttons">
<input type="button" id="activate" value="Activate rectangle" />
</div>
<script>
var width = window.innerWidth;
var height = window.innerHeight;
var stage = new Konva.Stage({
container: 'container',
width: width,
height: height,
});
var layer = new Konva.Layer();
for (var n = 0; n < 10; n++) {
var circle = new Konva.Circle({
x: Math.random() * stage.width(),
y: Math.random() * stage.height(),
radius: Math.random() * 50 + 25,
fill: 'red',
strokeWidth: 3,
stroke: 'black',
});
layer.add(circle);
}
var rect = new Konva.Rect({
x: 300,
y: 90,
width: 100,
height: 50,
fill: 'green',
strokeWidth: 3,
offset: {
x: 50,
y: 25,
},
draggable: true,
id: 'myRect',
});
layer.add(rect);
stage.add(layer);
var tween;
document.getElementById('activate').addEventListener(
'click',
function () {
var shape = stage.find('#myRect')[0];
if (tween) {
tween.destroy();
}
tween = new Konva.Tween({
node: shape,
duration: 1,
scaleX: Math.random() * 2,
scaleY: Math.random() * 2,
easing: Konva.Easings.ElasticEaseOut,
}).play();
},
false
);
</script>
</body>
</html>
|