examples/doc_padding.html from spritejs/spritejs

examples/doc_padding.html
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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Document</title>
  <script src="/js/spritejs.js"></script>
  <script src="//lib.baomitu.com/dat-gui/0.7.2/dat.gui.min.js"></script>
  <style>
    #adaptive {
      width: 50%;
      padding-bottom: 30%;
      background: #eee;
    }
  </style>
</head>
<body>
  <div id="adaptive"></div>
  <script>
    const {Scene, Label} = spritejs;
    const container = document.getElementById('adaptive');
    const scene = new Scene({
      container,
      width: 600,
      height: 360,
      // contextType: '2d',
    });
    const layer = scene.layer();

    const box = new Label({
      text: 'SpriteJS',
      fontSize: '2rem',
      anchor: [0.5, 0.5],
      pos: [300, 180],
      bgcolor: 'white',
      borderWidth: 1,
      padding: 25,
    });
    layer.append(box);

    /* globals dat */
    const gui = new dat.GUI();
    const config = {
      paddingLeft: box.attributes.paddingLeft,
      paddingRight: box.attributes.paddingRight,
      paddingTop: box.attributes.paddingTop,
      paddingBottom: box.attributes.paddingBottom,
    };
    gui.add(config, 'paddingLeft', 0, 50).onChange((val) => {
      box.attributes.paddingLeft = val;
    });
    gui.add(config, 'paddingRight', 0, 50).onChange((val) => {
      box.attributes.paddingRight = val;
    });

    gui.add(config, 'paddingTop', 0, 50).onChange((val) => {
      box.attributes.paddingTop = val;
    });
    gui.add(config, 'paddingBottom', 0, 50).onChange((val) => {
      box.attributes.paddingBottom = val;
    });
  </script>
</body>
</html>