BMP Preview Error

[wuyou201400]

I Want to Preview the Bmp Picture,But Work Not .Why?Thanks.My Code Is:

function previewImage(file, callback) {
    if (!file || !/image\//.test(file.type)) return; 
    if (file.type == 'image/gif') {//gif使用FileReader进行预览,因为mOxie.Image只支持jpg和png
        var fr = new mOxie.FileReader();
        fr.onload = function () {
            callback(fr.result);
            fr.destroy();
            fr = null;
        }
        fr.readAsDataURL(file.getSource());
    } else {
        var preloader = new mOxie.Image();
        preloader.onload = function () {
            preloader.downsize(300, 300); //先压缩一下要预览的图片,宽300，高300
            var imgsrc = preloader.type == 'image/jpeg' ? preloader.getAsDataURL('image/jpeg', 80) : preloader.getAsDataURL(); //得到图片src,实质为一个base64编码的数据
            callback && callback(imgsrc); //callback传入的参数为预览图片的url
            preloader.destroy();
            preloader = null;
        };
        preloader.load(file.getSource());
    }
}

[jayarjo]

Currently only jpegs and pngs are considered to be images. Maybe its time to recap this.

[liuyidi]

you can change file.type ,for example

function previewImage(file, callback) {
    if (!file || !/image\//.test(file.type)) return; 
    if (file.type == ('image/bmp' || 'image/gif') ) {//gif使用FileReader进行预览,因为mOxie.Image只支持jpg和png
        var fr = new mOxie.FileReader();
        fr.onload = function () {
            callback(fr.result);
            fr.destroy();
            fr = null;
        }
        fr.readAsDataURL(file.getSource());
    } else {
        var preloader = new mOxie.Image();
        preloader.onload = function () {
            preloader.downsize(300, 300); //先压缩一下要预览的图片,宽300，高300
            var imgsrc = preloader.type == 'image/jpeg' ? preloader.getAsDataURL('image/jpeg', 80) : preloader.getAsDataURL(); //得到图片src,实质为一个base64编码的数据
            callback && callback(imgsrc); //callback传入的参数为预览图片的url
            preloader.destroy();
            preloader = null;
        };
        preloader.load(file.getSource());
    }
}