HTML5 Canvas 特殊舞台事件 Konva

所有事件均从形状开始。因此，如果您在画布中的空白区域单击，click 事件不会在 Layer 上触发，而是会在 Stage 对象上触发。

Konva Stage Events Demoview raw

<!DOCTYPE html>
<html>
  <head>
    <script src="https://unpkg.com/konva@9.3.18/konva.min.js"></script>
    <meta charset="utf-8" />
    <title>Konva Stage Events 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();
      // add the layer to the stage
      stage.add(layer);

      var circle = new Konva.Circle({
        x: stage.width() / 2,
        y: stage.height() / 2,
        fill: 'blue',
        radius: 30,
      });

      stage.on('click', function (e) {
        // e.target is a clicked Konva.Shape or current stage if you clicked on empty space
        console.log('clicked on', e.target);
        console.log(
          'usual click on ' + JSON.stringify(stage.getPointerPosition())
        );
      });
    </script>
  </body>
</html>