DCloud图片上传和压缩

define(['common', 'config'], function(com, con) {  
    /*  
     * 打开摄像头、打开图库 模块  
     */  
    return {  
        //model对象  
        _model: {  
            result: true,  
            id: 0,  
            img: ""  
        },  
        //记录上传文件数  
        upTimer: {  
            count: 0,  
            imgs: []  
        },  
        //打开摄像头  
        open: function(obj, callback) {  
            my = this;  
            mui.plusReady(function() {  
                if($(obj).attr('data-camera-gallery') == "1") {  
                    var a = [{  
                        title: "拍照"  
                    }, {  
                        title: "从手机相册选择"  
                    }];  
                    plus.nativeUI.actionSheet({  
                        //title: "修改用户头像",  
                        cancel: "取消",  
                        buttons: a  
                    }, function(b) {  
                        /*actionSheet 按钮点击事件*/  
                        switch(b.index) {  
                            case 0:  
                                break;  
                            case 1:  
                                my.getImage(obj, callback);  
                                break;  
                            case 2:  
                                my.galleryImg(obj, callback);  
                                break;  
                            default:  
                                break;  
                        }  
                    });  
                } else {  
                    my.getImage(obj, callback);  
                }  
            });  
        },  
        //拍照  
        getImage: function(obj, callback) {  
            var my = this;  
            var photoType = $(obj).attr("data-PhotoType") ? $(obj).attr("data-PhotoType") : "";  
            mui.plusReady(function() {  
                var data = {  
                    result: false,  
                    msg: '',  
                    data: null  
                };  
                var c = plus.camera.getCamera();  
                c.captureImage(function(e) {  
                    $(obj).css('opacity', '0.3').attr('disabled', true);  
                    plus.io.resolveLocalFileSystemURL(e, function(entry) {  
                        var s = entry.toLocalURL();  
                        data.result = true;  
                        data.data = s;  
                        my.upload(obj, con.urlCONFIG.post_upload, s, callback, photoType);  
                    }, function(e) {  
                        data.data = "读取拍照文件错误：" + e.message;  
                        callback(data);  
                    });  
                }, function(error) {  
                    data.msg = error.message;  
                    //callback(data);  
                })  
            });  
        },  
        //打开相册  
        galleryImg: function(obj, callback) {  
            var my = this;  
            plus.gallery.pick(function(a) {  
                var photoType = $(obj).attr("data-PhotoType") ? $(obj).attr("data-PhotoType") : "";  
                var data = {  
                    result: false,  
                    msg: '',  
                    data: null  
                };  
                $(obj).css('opacity', '0.3').attr('disabled', true);  
                plus.io.resolveLocalFileSystemURL(a, function(entry) {  
                    var s = entry.toLocalURL();  
                    data.result = true;  
                    data.data = s;  
                    my.upload(obj, com.urlCONFIG.post_upload, s, callback, photoType);  
                }, function(e) {  
                    data.data = "读取拍照文件错误：" + e.message;  
                    callback(data);  
                });  
            }, function(a) {}, {  
                filter: "image"  
            })  
        },  
        //上传图片到服务器  
        upload: function(obj, url, filename, callback, photoType) {  
            var my = this;  
            my.upTimer.count++;  
            var tips = com.msg(my.upTimer.count + '个文件正在上传', 999);  
            mui.plusReady(function() {  

                var task = plus.uploader.createUpload(url, {  
                        method: "POST",  
                        blocksize: 0,  
                        priority: 100  
                    },  
                    function(t, status) {  
                        $(obj).css('opacity', '1').removeAttr('disabled');  
                        var json_data = t.responseText.replace('null(','').replace(');null','');  
                        //console.log(json_data)  
                        var data = JSON.parse(json_data);  
                        if(data) {  
                            // 上传完成  
                            if(status == 200) {  
                                my.upTimer.count--;  
                                if(my.upTimer.count <= 0) {  
                                    com.msg('所有图片上传完毕', 1);  
                                }  
                                var model = _.clone(my._model);  
                                model.id = new Date().getTime();  
                                model.img = data.data;  
                                my.upTimer.imgs.push(model);  
                                callback(model);  
                            } else {  
                                callback(data);  
                            }  
                        } else {  
                            com.msg('上传失败：' + data.msg, 0);  
                        }  
                    }  
                );  
                //图片压缩  
                my.resize(filename, function(zipSrc) {  
                    task.addFile(zipSrc, {  
                        key: "upload"  
                    });  
                    task.addData(zipSrc, zipSrc);  
                    task.start();  
                });  
            });  
        },  
        //压缩（需要获取本地文件权限）  
        resize: function(src, callback) {  
            var filename = src.substring(src.lastIndexOf('/') + 1);  
            plus.zip.compressImage({  
                    src: src,  
                    dst: '_doc/' + filename,  
                    overwrite: true,  
                    width: '1000px', //这里指定了宽度，同样可以修改  
                    format: 'jpg',  
                    quality: 90 //图片质量不再修改，以免失真  
                },  
                function(e) {  
                    callback(e.target);  
                },  
                function(err) {  
                    com.alert('未知错误!', 0, function() {  
                        mui.back();  
                    })  
                })  
        }  
    };  
})