要使用Konva拖放组，我们在实例化组时可以设置draggable属性，设置对象的值为true，或者我们可以使用draggable（）方法。

Konva Drag and Drop the Group Demo 点击查看

<!DOCTYPE html>
<html>
<head>
<script src="https://cdn.rawgit.com/konvajs/konva/1.4.0/konva.min.js"></script>
<meta charset="utf-8">
<title>Konva Drag and Drop a Group Demo</title>
<style>
    body {
        margin: 0;
        padding: 0;
        overflow: hidden;
        background-color: #F0F0F0;
    }
</style>
</head>
<body>
<div id="container"></div>
<script>
var width = window.innerWidth;
var height = window.innerHeight;
var stage = new Konva.Stage({
    container: 'container',
    width: width,
    height: height
});
var shapesLayer = new Konva.Layer();
var group = new Konva.Group({
    draggable: true
});
var colors = ['red', 'orange', 'yellow', 'green', 'blue', 'purple'];
for(var i = 0; i < 6; i++) {
    var box = new Konva.Rect({
        x: i * 30 + 10,
        y: i * 18 + 40,
        width: 100,
        height: 50,
        name: colors[i],
        fill: colors[i],
        stroke: 'black',
        strokeWidth: 4
    });
    group.add(box);
}
group.on('mouseover', function() {
    document.body.style.cursor = 'pointer';
});
group.on('mouseout', function() {
    document.body.style.cursor = 'default';
});
shapesLayer.add(group);
stage.add(shapesLayer);
</script>
</body>
</html>

拖放-组

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