FineUploader drawThumbnail错误

问题描述

我正在使用FineUploader核心，我正在尝试显示上传文件的缩略图。简而言之，我正在使用它：

I'm using the FineUploader core and I'm trying to show a thumbnail of the uploaded files. In a nutshell I'm using this:

this.uploader = new qq.FineUploaderBasic({
    callbacks: {
        onSubmit: function(id, fileName) {
            var canvas = document.createElement('canvas');
            canvas.width = 50;
            canvas.height = 50;
            $('#file-'+id+' .upload_thumbnail').html(canvas);
            this.drawThumbnail(id, canvas, 50, false);
        }
    }
 });

但是，我在Firebug中收到以下错误：

However, I get the following error in Firebug:

ReferenceError：未定义MegaPixImage
mpImg = new MegaPixImage（fileOrBlob，megapixErrorHandler）;

ReferenceError: MegaPixImage is not definedmpImg = new MegaPixImage(fileOrBlob, megapixErrorHandler);

我缺少什么？

推荐答案

好的，我看到MegaPixImage是一个包含在FineUploader版本中的外部JavaScript库，但不适用于我当前的RequireJS设置。如果我将MegaPixImage作为单独的文件包含在内，我可以使用缩略图功能

Ok, I see the MegaPixImage is an external javascript library that is included in the FineUploader build, but doesn't work with my current RequireJS setup. If I include the MegaPixImage as a seperate file, I get the thumbnail function to work

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