Zoom Image on Hover

获取Konva最新的信息

Instructions: Hover over an Image.

Konva Zoom Image on Hover Demoview raw
<!DOCTYPE html>
<html>
  <head>
    <script src="https://unpkg.com/[email protected]/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);
        layer.draw();
      };

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

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

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

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