html5 canvas用图案填充形状

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>用图案填充形状</title>
<script src="js/modernizr.js"></script>
</head>

<body>
<script type="text/javascript">
window.addEventListener(load,eventWindowLoaded,false);
function eventWindowLoaded(){
    canvasApp();
}
function canvasSupport(){
    return Modernizr.canvas;
}
function canvasApp(){
    if(!canvasSupport()){
        return;
    }else{
        var theCanvas = document.getElementById(canvas)
        var context = theCanvas.getContext("2d")

    }
    drawScreen();
    function drawScreen(){
        var fillImg=new Image();
        fillImg.src=fill_20x20.png;
        fillImg.onload=function(){

//简单的onload
//图片填充的4种类型:repeat,no-repeat,repeat-x,repeat-y;
//createPattern()填充图像函数,一个图像的实例,一个填充的类型
var fillPattern = context.createPattern(fillImg,repeat-x); var fillPattern1 = context.createPattern(fillImg,repeat-y); var fillPattern2 = context.createPattern(fillImg,repeat); context.fillStyle=fillPattern; context.fillRect(0,0,100,20); context.fillStyle=fillPattern1; context.fillRect(0,10,100,20); context.fillStyle=fillPattern2; context.fillRect(0,60,100,10); } } } </script> <canvas id="canvas" width="500" height="500"> 你的浏览器无法使用canvas 如有疑问加QQ:1035417613;小白童鞋;你的支持是我最大的快乐!! </canvas> </body> </html>
注意图片的路径!!!其他就和css的background感觉差不多

//图片填充的4种类型:repeat,no-repeat,repeat-x,repeat-y;
//createPattern()填充图像函数,一个图像的实例,一个填充的类型

郑重声明:本站内容如果来自互联网及其他传播媒体,其版权均属原媒体及文章作者所有。转载目的在于传递更多信息及用于网络分享,并不代表本站赞同其观点和对其真实性负责,也不构成任何其他建议。