drawImage - xiaoleilei

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title></title>
</head>
<body>
    <canvas id="ourCanvas" width="1100" height="1100" style="border:3px dashed #0094ff"></canvas>
<script>
    var canvas = document.getElementById("ourCanvas");
    var ctx = canvas.getContext("2d");
    var image = new Image();
    image.src = "images/gho.jpg";
    image.onload = function () {
        //保持原大小绘制图片
        ctx.drawImage(image, 30, 30);
        //绘制图片时进行缩放
        ctx.drawImage(image, 50, 320, 300, 180);
        //从源位图中挖取一块
        ctx.drawImage(image, 30, 50, 100, 100, 100, 600, 150, 150);
    }

</script>
</body>
</html>

posted on 2013-07-08 22:07 xiaoleilei 阅读(263) 评论(0) 收藏举报

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