canvas实现图像布局填充功能

时间:2020-05-15 蓝丶木鱼人气:0

本文实例为大家分享了canvas图像布局填充的具体代码，供大家参考，具体内容如下

<!DOCTYPE html> 
<html> 
<head lang="en"> 
  <meta charset="UTF-8"> 
  <title>canvas-图像布局填充</title> 
  <style> 
    #canvas{ 
      border: 1px solid palevioletred; 
    } 
  </style> 
</head> 
<body> 
  <canvas id="canvas" width="600px" height="600px"> 
  </canvas> 
  <script> 
    //获取到canvas元素 
    var canvas = document.getElementById('canvas'); 
    //获取canvas中的画图环境 
    var context = canvas.getContext('2d'); 
 
    //创建Image对象 
    var img = new Image(); 
    //alert(img); 
    //引入图片URL 
    img.src = "./image/huiji.png"; 
    window.onload = function (){ 
      //创建填充规则 .createPattern(图像对象,'规则'); 第二参数：repeat，no-repeat，repeat-x,repeat-y; 
       var pattern = context.createPattern(img,'no-repeat'); 
      //设置填充属性 
      context.fillStyle = pattern; 
      context.fillRect(10,10,canvas.width,canvas.height); 
    } 
  </script> 
</body> 
</html>

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