分组 | Konva 中文文档中文API

通过 Group 我们将多个图形以分组的方式聚合在一起，首先我们实例化一个 Konva.Group() 对象然后使用 add() 方法将图形加入到分组。当我们要同时转换多个图形时，使用分组就非常方便了，例如我们需要同时移动、旋转、缩放都给图形时。组也可以添加到其它组内。更详细的文档请查看Konva.Group documentation。

Konva Groups Demoview raw

<!DOCTYPE html>
<html>
  <head>
    <script src="https://unpkg.com/[email protected]/konva.min.js"></script>
    <meta charset="utf-8" />
    <title>Konva Groups 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 layer = new Konva.Layer();

      /*
       * create a group which will be used to combine
       * multiple simple shapes.  Transforming the group will
       * transform all of the simple shapes together as
       * one unit
       */
      var group = new Konva.Group({
        x: 120,
        y: 40,
        rotation: 20
      });

      var colors = ['red', 'orange', 'yellow'];

      for (var i = 0; i < 3; i++) {
        var box = new Konva.Rect({
          x: i * 30,
          y: i * 18,
          width: 100,
          height: 50,
          name: colors[i],
          fill: colors[i],
          stroke: 'black',
          strokeWidth: 4
        });

        group.add(box);
      }

      layer.add(group);
      stage.add(layer);
    </script>
  </body>
</html>