前端插件——头像截图上传插件的使用（带后台）

@charset "utf-8";
.container {
    width: 400px;
    margin: 40px auto 0 auto;
    position: relative;
    font-family: 微软雅黑;
    font-size: 12px;
}
.container p {
    line-height: 12px;
    line-height: 0px;
    height: 0px;
    margin: 10px;
    color: #bbb
}
.action {
    width: 400px;
    height: 30px;
    margin: 10px 0;
}
.cropped {
    position: absolute;
    right: -230px;
    top: 0;
    width: 200px;
    border: 1px #ddd solid;
    height: 460px;
    padding: 4px;
    box-shadow: 0px 0px 12px #ddd;
    text-align: center;
}
.imageBox {
    position: relative;
    height: 400px;
    width: 400px;
    border: 1px solid #aaa;
    background: #fff;
    overflow: hidden;
    background-repeat: no-repeat;
    cursor: move;
    box-shadow: 4px 4px 12px #B0B0B0; 
}
.imageBox .thumbBox {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 200px;
    height: 200px;
    margin-top: -100px;
    margin-left: -100px;
    box-sizing: border-box;
    border: 1px solid rgb(102, 102, 102);
    box-shadow: 0 0 0 1000px rgba(0, 0, 0, 0.5);
    background: none repeat scroll 0% 0% transparent;
}
.imageBox .spinner {
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    text-align: center;
    line-height: 400px;
    background: rgba(0,0,0,0.7);
}
.Btnsty_peyton{ float: right;
   width: 66px;
  display: inline-block;
  margin-bottom: 10px;
  height: 57px;
  line-height: 57px;
  font-size: 20px;
  color: #FFFFFF;
  margin:0px 2px;
  background-color: #f38e81;
  border-radius: 3px;
  text-decoration: none;
  cursor: pointer;
  box-shadow: 0px 0px 5px #B0B0B0;
  border: 0px #fff solid;}
/*选择文件上传*/
.new-contentarea {
    width: 165px;
    overflow:hidden;
    margin: 0 auto;
    position:relative;float:left;
}
.new-contentarea label {
    width:100%;
    height:100%;
    display:block;
}
.new-contentarea input[type=file] {
    width:188px;
    height:60px;
    background:#333;
    margin: 0 auto;
    position:absolute;
    right:50%;
    margin-right:-94px;
    top:0;
    right/*\**/:0px\9;
    margin-right/*\**/:0px\9;
    width/*\**/:10px\9;
    opacity:0;
    filter:alpha(opacity=0);
    z-index:2;
}
a.upload-img{
    width:165px;
    display: inline-block;
    margin-bottom: 10px;
    height:57px;
    line-height: 57px;
    font-size: 20px;
    color: #FFFFFF;
    background-color: #f38e81;
    border-radius: 3px;
    text-decoration:none;
    cursor:pointer;
    border: 0px #fff solid;
    box-shadow: 0px 0px 5px #B0B0B0;
}
a.upload-img:hover{
    background-color: #ec7e70;
}

.tc{text-align:center;}
/*www.jq22.com*/

"use strict";
(function (factory) {
    if (typeof define === ‘function‘ && define.amd) {
        define([‘jquery‘], factory);
    } else {
        factory(jQuery);
    }
}(function ($) {
    var cropbox = function(options, el){
        var el = el || $(options.imageBox),
            obj =
            {
                state : {},
                ratio : 1,
                options : options,
                imageBox : el,
                thumbBox : el.find(options.thumbBox),
                spinner : el.find(options.spinner),
                image : new Image(),
                getDataURL: function ()
                {
                    var width = this.thumbBox.width(),
                        height = this.thumbBox.height(),
                        canvas = document.createElement("canvas"),
                        dim = el.css(‘background-position‘).split(‘ ‘),
                        size = el.css(‘background-size‘).split(‘ ‘),
                        dx = parseInt(dim[0]) - el.width()/2 + width/2,
                        dy = parseInt(dim[1]) - el.height()/2 + height/2,
                        dw = parseInt(size[0]),
                        dh = parseInt(size[1]),
                        sh = parseInt(this.image.height),
                        sw = parseInt(this.image.width);

                    canvas.width = width;
                    canvas.height = height;
                    var context = canvas.getContext("2d");
                    context.drawImage(this.image, 0, 0, sw, sh, dx, dy, dw, dh);
                    var imageData = canvas.toDataURL(‘image/png‘);
                    return imageData;
                },
                getBlob: function()
                {
                    var imageData = this.getDataURL();
                    var b64 = imageData.replace(‘data:image/png;base64,‘,‘‘);
                    var binary = atob(b64);
                    var array = [];
                    for (var i = 0; i < binary.length; i++) {
                        array.push(binary.charCodeAt(i));
                    }
                    return  new Blob([new Uint8Array(array)], {type: ‘image/png‘});
                },
                zoomIn: function ()
                {
                    this.ratio*=1.1;
                    setBackground();
                },
                zoomOut: function ()
                {
                    this.ratio*=0.9;
                    setBackground();
                }
            },
            setBackground = function()
            {
                var w =  parseInt(obj.image.width)*obj.ratio;
                var h =  parseInt(obj.image.height)*obj.ratio;

                var pw = (el.width() - w) / 2;
                var ph = (el.height() - h) / 2;

                el.css({
                    ‘background-image‘: ‘url(‘ + obj.image.src + ‘)‘,
                    ‘background-size‘: w +‘px ‘ + h + ‘px‘,
                    ‘background-position‘: pw + ‘px ‘ + ph + ‘px‘,
                    ‘background-repeat‘: ‘no-repeat‘});
            },
            imgMouseDown = function(e)
            {
                e.stopImmediatePropagation();

                obj.state.dragable = true;
                obj.state.mouseX = e.clientX;
                obj.state.mouseY = e.clientY;
            },
            imgMouseMove = function(e)
            {
                e.stopImmediatePropagation();

                if (obj.state.dragable)
                {
                    var x = e.clientX - obj.state.mouseX;
                    var y = e.clientY - obj.state.mouseY;

                    var bg = el.css(‘background-position‘).split(‘ ‘);

                    var bgX = x + parseInt(bg[0]);
                    var bgY = y + parseInt(bg[1]);

                    el.css(‘background-position‘, bgX +‘px ‘ + bgY + ‘px‘);

                    obj.state.mouseX = e.clientX;
                    obj.state.mouseY = e.clientY;
                }
            },
            imgMouseUp = function(e)
            {
                e.stopImmediatePropagation();
                obj.state.dragable = false;
            },
            zoomImage = function(e)
            {
                e.originalEvent.wheelDelta > 0 || e.originalEvent.detail < 0 ? obj.ratio*=1.1 : obj.ratio*=0.9;
                setBackground();
            }

        obj.spinner.show();
        obj.image.onload = function() {
            obj.spinner.hide();
            setBackground();

            el.bind(‘mousedown‘, imgMouseDown);
            el.bind(‘mousemove‘, imgMouseMove);
            $(window).bind(‘mouseup‘, imgMouseUp);
            el.bind(‘mousewheel DOMMouseScroll‘, zoomImage);
        };
        obj.image.src = options.imgSrc;
        el.on(‘remove‘, function(){$(window).unbind(‘mouseup‘, imgMouseUp)});

        return obj;
    };

    jQuery.fn.cropbox = function(options){
        return new cropbox(options, this);
    };
}));

/*www.jq22.com*/