<!DOCTYPE html>
<html>
<head>
<script src="https://unpkg.com/konva@4.0.18/konva.min.js"></script>
<meta charset="utf-8" />
<title>Konva Shape Layering Demo</title>
<style>
body {
margin: 0;
padding: 0;
overflow: hidden;
background-color: #f0f0f0;
}
#buttons {
position: absolute;
left: 10px;
top: 0px;
}
button {
margin-top: 10px;
display: block;
}
</style>
</head>
<body>
<div id="container"></div>
<div id="buttons">
<button id="toTop">
Move yellow box to top
</button>
<button id="toBottom">
Move yellow box to bottom
</button>
<button id="up">
Move yellow box up
</button>
<button id="down">
Move yellow box down
</button>
<button id="zIndex">
Set yellow box zIndex to 3
</button>
</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();
var offsetX = 0;
var offsetY = 0;
var colors = ['red', 'orange', 'yellow', 'green', 'blue', 'purple'];
var yellowBox = null;
for (var n = 0; n < 6; n++) {
(function() {
var i = n;
var box = new Konva.Rect({
x: i * 30 + 210,
y: i * 18 + 40,
width: 100,
height: 50,
fill: colors[i],
stroke: 'black',
strokeWidth: 4,
draggable: true,
name: colors[i]
});
box.on('mouseover', function() {
document.body.style.cursor = 'pointer';
});
box.on('mouseout', function() {
document.body.style.cursor = 'default';
});
if (colors[i] === 'yellow') {
yellowBox = box;
}
layer.add(box);
})();
}
stage.add(layer);
document.getElementById('toTop').addEventListener(
'click',
function() {
yellowBox.moveToTop();
layer.draw();
},
false
);
document.getElementById('toBottom').addEventListener(
'click',
function() {
yellowBox.moveToBottom();
layer.draw();
},
false
);
document.getElementById('up').addEventListener(
'click',
function() {
yellowBox.moveUp();
layer.draw();
},
false
);
document.getElementById('down').addEventListener(
'click',
function() {
yellowBox.moveDown();
layer.draw();
},
false
);
document.getElementById('zIndex').addEventListener(
'click',
function() {
yellowBox.setZIndex(3);
layer.draw();
},
false
);
</script>
</body>
</html>
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