悬停放大图像

说明：将鼠标悬停在图像上。
Konva 悬停放大图像演示view raw
<!DOCTYPE html>
<html>
  <head>
    <script src="https://unpkg.com/konva@9.3.18/konva.min.js"></script>
    <meta charset="utf-8" />
    <title>Konva Zoom Image on Hover 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();

      stage.add(layer);

      var imageObj = new Image();
      imageObj.onload = function () {
        var backgroundImage = new Konva.Image({
          x: 0,
          y: 0,
          width: width,
          height: height,
          image: imageObj,
        });
        layer.add(backgroundImage);
      };

      imageObj.src = '/assets/space.jpg';

      var zoomLevel = 2;
      layer.on('mouseenter', function () {
        layer.scale({
          x: zoomLevel,
          y: zoomLevel,
        });
      });

      layer.on('mousemove', function (e) {
        var pos = stage.getPointerPosition();
        layer.x(-pos.x);
        layer.y(-pos.y);
      });

      layer.on('mouseleave', function () {
        layer.x(0);
        layer.y(0);
        layer.scale({
          x: 1,
          y: 1,
        });
      });
    </script>
  </body>
</html>