@{
    ViewBag.Title = "学生学籍";
    Layout = "~/Views/Shared/_Index.cshtml";
}
<div class="lr-layout ">
    <div class="lr-layout-center">
        <div class="lr-layout-wrap lr-layout-wrap-notitle ">
            <div class="lr-layout-tool">
                <div class="lr-layout-tool-left">
                    <div class="lr-layout-tool-item">
                        <div id="multiple_condition_query">
                            <div class="lr-query-formcontent">
                                <div class="col-xs-6 lr-form-item">
                                    <div class="lr-form-item-title">学号</div>
                                    <input id="StuNo" type="text" class="form-control" />
                                </div>
                                <div class="col-xs-6 lr-form-item">
                                    <div class="lr-form-item-title">姓名</div>
                                    <input id="StuName" type="text" class="form-control" />
                                </div>
                                <div class="col-xs-12 lr-form-item">
                                    <div class="lr-form-item-title">系部</div>
                                    <div id="DeptNo"></div>
                                </div>
                                <div class="col-xs-12 lr-form-item">
                                    <div class="lr-form-item-title">专业</div>
                                    <div id="MajorNo"></div>
                                </div>
                                <div class="col-xs-12 lr-form-item">
                                    <div class="lr-form-item-title">班级</div>
                                    <div id="ClassNo"></div>
                                </div>
                                <div class="col-xs-12 lr-form-item">
                                    <div class="lr-form-item-title">备注</div>
                                    <input id="Remark" type="text" class="form-control" />
                                </div>
                            </div>
                        </div>
                    </div>
                </div>
                <div class="lr-layout-tool-right">
                    <div class=" btn-group btn-group-sm">
                        <a id="lr_refresh" class="btn btn-default"><i class="fa fa-refresh"></i></a>
                    </div>
                    <div class=" btn-group btn-group-sm" learun-authorize="yes">
                        <a id="lr_add" class="btn btn-default"><i class="fa fa-plus"></i>&nbsp;录入</a>
                        <a id="lr_edit" class="btn btn-default"><i class="fa fa-pencil-square-o"></i>&nbsp;修改</a>
                        <a id="lr_delete" class="btn btn-default"><i class="fa fa-trash-o"></i>&nbsp;删除</a>
                        <a id="lr_view" class="btn btn-default"><i class="fa fa-pencil-square-o"></i>&nbsp;查看</a>
                        <a id="lr_print" class="btn btn-default"><i class="fa fa-print"></i>&nbsp;打印</a>
                        <a id="check" class="btn btn-default"><i class="fa fa-lock"></i>&nbsp;审核</a>
                        <a id="uncheck" class="btn btn-default"><i class="fa fa-unlock"></i>&nbsp;去审</a>
                        <a id="checkall" class="btn btn-default"><i class="fa fa-print"></i>&nbsp;审核全部</a>
                        <a id="lr_generate" class="btn btn-default"><i class="fa fa-linode"></i>&nbsp;生成帐号</a>
                        <a id="lr_update" class="btn btn-default"><i class="fa fa-braille"></i>&nbsp;更新帐号</a>
                        <a id="lr_synPhoto" class="btn btn-default"><i class="fa fa-braille"></i>&nbsp;同步照片</a>
                        <a id="lr_searchChange" class="btn btn-default"><i class="fa fa-search"></i>&nbsp;查看异动</a>
                        <a id="lr_photo" class="btn btn-default"><i class="fa fa-search"></i>&nbsp;拍照</a>

                    </div>
                </div>
            </div>
            <div class="lr-layout-body" id="gridtable"></div>
            <div style="display: none" class="tailoring-container">
                <div class="black-cloth" onclick="closeTailor(this)"></div>
                <div class="tailoring-content">
                    <div class="tailoring-content-one">
                        <label title="上传图片" for="chooseImg" class="l2-btn choose-btn">
                            <input type="file" accept="image/jpg,image/jpeg,image/png" name="file" id="chooseImg" class="hidden" onchange="selectImg(this)">
                            本地上传
                        </label>
                        <label title="拍照" class="l2-btn choose-btn" id='capture' style="margin-left: 2%;">拍照</label>
                        <label title="重拍" class="l2-btn choose-btn" id='takeAgain' style="margin-left: 2%;">重拍</label>
                        <div class="close-tailoring" onclick="closeTailor(this)">×</div>
                    </div>
                    <div class="tailoring-content-two">
                        <div class="tailoring-box-parcel">
                            <video id="video" width="100%" height="100%" style="float: left;"></video>
                            <canvas id="canvas" width="482px" height="448px" style="float: left;" hidden="hidden"></canvas>
                            <div id="showImg" hidden="hidden" style="width: 100%;height:100%;">
                                <img id="tailoringImg">
                            </div>
                        </div>
                        <div class="preview-box-parcel">
                            <p>图片预览：</p>
                            <div class="square previewImg"></div>
                            <div class="circular previewImg"></div>
                        </div>
                    </div>
                    <div class="tailoring-content-three">
                        <button class="l2-btn cropper-reset-btn">复位</button>
                        <button class="l2-btn cropper-rotate-btn">旋转</button>
                        <button class="l2-btn cropper-scaleX-btn">换向</button>
                        <button class="l2-btn sureCut" id="sureCut">确定</button>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>
@Html.AppendJsFile("/Areas/EducationalAdministration/Views/StuInfoBasic/IndexOfDC.js", "/Content/camera/cropper.min.js",
    "/Areas/EducationalAdministration/Views/StuEnroll/LodopFuncs.js")
@Html.AppendCssFile("/Content/camera/cropper.min.css", "/Content/camera/ImgCropping.css")

<script>
    //弹出框水平垂直居中
    (window.onresize = function () {
        var win_height = $(window).height();
        var win_width = $(window).width();
        if (win_width <= 768) {
            $(".tailoring-content").css({
                "top": (win_height - $(".tailoring-content").outerHeight()) / 2,
                "left": 0
            });
        } else {
            $(".tailoring-content").css({
                "top": (win_height - $(".tailoring-content").outerHeight()) / 2,
                "left": (win_width - $(".tailoring-content").outerWidth()) / 2
            });
        }
    })();
    //图像上传
    function selectImg(file) {
        if (!file.files || !file.files[0]) {
            return;
        }
        var reader = new FileReader();
        reader.onload = function (evt) {
            var replaceSrc = evt.target.result;
            //更换cropper的图片
            $('#tailoringImg').cropper('replace', replaceSrc, false);//默认false，适应高度，不失真

        }
        reader.readAsDataURL(file.files[0]);
        mediaStreamTrack && mediaStreamTrack.stop();
        $("#video").hide();
        $("#showImg").show();

    }
    //cropper图片裁剪
    $('#tailoringImg').cropper({
        aspectRatio: 5 / 7,//默认比例
        preview: '.previewImg',//预览视图
        guides: false,  //裁剪框的虚线(九宫格)
        autoCropArea: 0.5,  //0-1之间的数值，定义自动剪裁区域的大小，默认0.8
        movable: false, //是否允许移动图片
        dragCrop: true,  //是否允许移除当前的剪裁框，并通过拖动来新建一个剪裁框区域
        movable: true,  //是否允许移动剪裁框
        resizable: true,  //是否允许改变裁剪框的大小
        zoomable: false,  //是否允许缩放图片大小
        mouseWheelZoom: false,  //是否允许通过鼠标滚轮来缩放图片
        touchDragZoom: true,  //是否允许通过触摸移动来缩放图片
        rotatable: true,  //是否允许旋转图片
        crop: function (e) {
            // 输出结果数据裁剪图像。
        }
    });
    //旋转
    $(".cropper-rotate-btn").on("click", function () {
        $('#tailoringImg').cropper("rotate", 45);
    });
    //复位
    $(".cropper-reset-btn").on("click", function () {
        $('#tailoringImg').cropper("reset");
    });
    //换向
    var flagX = true;
    $(".cropper-scaleX-btn").on("click", function () {
        if (flagX) {
            $('#tailoringImg').cropper("scaleX", -1);
            flagX = false;
        } else {
            $('#tailoringImg').cropper("scaleX", 1);
            flagX = true;
        }
        flagX != flagX;
    });
    //裁剪后的处理
    $("#sureCut").on("click", function () {
        var cas = $('#tailoringImg').cropper('getCroppedCanvas');//获取被裁剪后的canvas
        var base64url = cas.toDataURL('image/png'); //转换为base64地址形式
        base64url = base64url.replace("\r", "");
        top.learun.postForm(top.$.rootUrl + '/EducationalAdministration/StuInfoBasic/IsPhoto', { stuId: StuId, base64url: base64url },
            function (res) {
                //关闭裁剪框
                StuId = "";
                closeTailor();
                refreshGirdData();
            });
    });
    //关闭裁剪框
    function closeTailor() {
        StuId = "";
        $(".tailoring-container").toggle();
        mediaStreamTrack && mediaStreamTrack.stop();
    }

    let video = document.getElementById('video');
    let canvas = document.getElementById('canvas');
    let context = canvas.getContext('2d');
    var mediaStreamTrack;
    document.getElementById('capture').addEventListener('click',
        function () {
            context.drawImage(video, 0, 0, 518, 420);
            mediaStreamTrack && mediaStreamTrack.stop();
            $('#tailoringImg').cropper('replace', canvas.toDataURL("image/png"), false); //默认false，适应高度，不失真
            $("#video").hide(); //隐藏拍照框
            $("#showImg").show(); //将拍照结果显示
        });

    //请求拍照
    $("#takeAgain").bind("click", function () {
        takePhoto();
    });

    //开始拍照
    function takeImg() {
        $(".tailoring-container").toggle();
        takePhoto();
    }

    //请求摄像头
    function takePhoto() {
        // 老的浏览器可能根本没有实现 mediaDevices，所以我们可以先设置一个空的对象
        if (navigator.mediaDevices === undefined) {
            navigator.mediaDevices = {};
        }
        if (navigator.mediaDevices.getUserMedia === undefined) {
            navigator.mediaDevices.getUserMedia = function (constraints) {
                // 首先，如果有getUserMedia的话，就获得它
                var getUserMedia = navigator.webkitGetUserMedia || navigator.mozGetUserMedia || navigator.msGetUserMedia;

                // 一些浏览器根本没实现它 - 那么就返回一个error到promise的reject来保持一个统一的接口
                if (!getUserMedia) {
                    return Promise.reject(new Error('不支持此浏览器，请更换Chrome或360浏览器'));
                }
                // 否则，为老的navigator.getUserMedia方法包裹一个Promise
                return new Promise(function (resolve, reject) {
                    getUserMedia.call(navigator, constraints, resolve, reject);
                });
            }
        }
        const constraints = {
            video: true,
            audio: false
        };
        let videoPlaying = false;
        let promise = navigator.mediaDevices.getUserMedia(constraints);
        promise.then(stream => {
            // 旧的浏览器可能没有srcObject
            if ("srcObject" in video) {
                video.srcObject = stream;
                mediaStreamTrack = stream.getTracks()[0];
            } else {
                // 防止再新的浏览器里使用它，应为它已经不再支持了
                video.src = window.URL.createObjectURL(stream);
            }
            video.onloadedmetadata = function (e) {
                video.play();
                videoPlaying = true;
            };
        }).catch(err => {
            console.error(err.name + ": " + err.message);
        });
        $("#showImg").hide();//隐藏拍照结果显示框
        //$('#showImg').html('<img id="tailoringImg" hidden="hidden">')
        $("#video").show();//开启拍照框
    }
</script>