HTML5 Canvas 更改鼠标光标样式

要使用 Konva 框架更改鼠标光标，您只需监听需要更改光标的事件，并手动为 Stage 容器应用新样式。

说明：将鼠标悬停在每个五边形上，查看光标如何变化

Konva 鼠标光标演示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 Mouse Cursor Styles 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();

      var shape1 = new Konva.RegularPolygon({
        x: 80,
        y: stage.height() / 2,
        sides: 5,
        radius: 70,
        fill: 'red',
        stroke: 'black',
        strokeWidth: 4,
        draggable: true,
      });

      var shape2 = new Konva.RegularPolygon({
        x: 220,
        y: stage.height() / 2,
        sides: 5,
        radius: 70,
        fill: 'green',
        stroke: 'black',
        strokeWidth: 4,
        draggable: true,
      });

      var shape3 = new Konva.RegularPolygon({
        x: 360,
        y: stage.height() / 2,
        sides: 5,
        radius: 70,
        fillLinearGradientStartPoint: { x: -50, y: -50 },
        fillLinearGradientEndPoint: { x: 50, y: 50 },
        fillLinearGradientColorStops: [0, 'red', 1, 'yellow'],
        stroke: 'black',
        strokeWidth: 4,
        draggable: true,
      });

      shape1.on('mouseenter', function () {
        stage.container().style.cursor = 'pointer';
      });

      shape1.on('mouseleave', function () {
        stage.container().style.cursor = 'default';
      });

      shape2.on('mouseenter', function () {
        stage.container().style.cursor = 'move';
      });

      shape2.on('mouseleave', function () {
        stage.container().style.cursor = 'default';
      });

      shape3.on('mouseenter', function () {
        stage.container().style.cursor = 'crosshair';
      });

      shape3.on('mouseleave', function () {
        stage.container().style.cursor = 'default';
      });

      layer.add(shape1);
      layer.add(shape2);
      layer.add(shape3);
      stage.add(layer);
    </script>
  </body>
</html>