头像截取 图片上传 js插件

先看一下整体效果

页面html

                <div class="row">
                    <div class="tabs-container">
                        <ul class="nav nav-tabs">
                            <li>
                                <a style="color: #676a6c;padding: 10px 30px 10px 40px;"> 上传头像<span style="color:red;">*</span></a>
                            </li>
                            <li class="active">
                                <a data-toggle="tab" href="#tab-1" aria-expanded="true"> 本地上传</a>
                            </li>
                            <li class="">
                                <a data-toggle="tab" href="#tab-2" aria-expanded="false">相册选取</a>
                            </li>
                        </ul>
                        <div class="tab-content">
                            <div id="tab-1" class="tab-pane active">
                                <div class="panel-body" style="height:475px">
                                    <div class="container">
                                        <div class="imageBox">
                                            <div class="thumbBox"></div>
                                            <div class="spinner" style="display: none">Loading...</div>
                                        </div>
                                        <div class="cropped"></div>
                                        <div class="action">
                                            <div class="new-contentarea tc">
                                                <a href="javascript:void(0)" class="upload-img">
                                                    <label for="upload-file">上传图像</label>
                                                </a>
                                                <input type="file" class="" name="upload-file" id="upload-file" />
                                            </div>
                                            <input type="button" id="btnCrop" class="Btnsty_peyton" value="裁切">
                                            <input type="button" id="btnZoomIn" class="Btnsty_peyton" value="+">
                                            <input type="button" id="btnZoomOut" class="Btnsty_peyton" value="-">
                                        </div>
                                    </div>
                                </div>
                            </div>
                            <div id="tab-2" class="tab-pane">
                                <div class="panel-body" id="Album" style="height:475px;overflow: scroll;overflow-x: hidden;">
                                    <a class="fancybox" title="选取该照片">
                                        <img src="/assets/img/Inteall/HeadPortrait/user_Doctor_01.jpg" alt="图片" />
                                    </a>
                                    <a class="fancybox" title="选取该照片">
                                        <img src="/assets/img/Inteall/HeadPortrait/user_Doctor_02.jpg" alt="图片" />
                                    </a>
                                    <a class="fancybox" title="选取该照片">
                                        <img src="/assets/img/Inteall/HeadPortrait/user_Doctor_03.jpg" alt="图片" />
                                    </a>
                                    <a class="fancybox" title="选取该照片">
                                        <img src="/assets/img/Inteall/HeadPortrait/user_Doctor_04.jpg" alt="图片" />
                                    </a>
                                    <a class="fancybox" title="选取该照片">
                                        <img src="/assets/img/Inteall/HeadPortrait/user_Doctor_05.jpg" alt="图片" />
                                    </a>
                                    <a class="fancybox" title="选取该照片">
                                        <img src="/assets/img/Inteall/HeadPortrait/user_Doctor_06.jpg" alt="图片" />
                                    </a>
                                </div>
                            </div>
                        </div>
                    </div>
                </div>

页面js引用

<script src="/assets/js/jquery.js"></script>
<script src="~/assets/js/cropbox/cropbox.js"></script>
<script type="text/javascript">
    var HeaderImg = null, EditHeaderImg = null, cropper = null, options =
        {
            thumbBox: '.thumbBox',
            spinner: '.spinner',
            imgSrc: "/assets/img/Inteall/HeadPortrait/user_Doctor_01.jpg",
            loadAfter: function () { $('#btnCrop').click(); }
        };
    $(window).load(function () {
        cropper = $('.imageBox').cropbox(options)
        $('#upload-file').on('change', function () {
            var reader = new FileReader();
            reader.onload = function (e) {
                options.imgSrc = e.target.result;
                cropper = $('.imageBox').cropbox(options);
            }
            reader.readAsDataURL(this.files[0]);
            this.files = null;
        });
        $('#btnCrop').on('click', function () {
            HeaderImg = cropper.getDataURL();
            $('.cropped').html('');
            //$('.cropped').append('<img src="' + img + '" align="absmiddle" style="64px;margin-top:4px;border-radius:64px;box-shadow:0px 0px 12px #7E7E7E;" ><p>64px*64px</p>');
            $('.cropped').append('<img src="' + HeaderImg + '" align="absmiddle" style="180px;margin-top:4px;border-radius:180px;box-shadow:0px 0px 12px #7E7E7E;"><p>180px*180px</p>');
        });
        $('#btnZoomIn').on('click', function () {
            cropper.zoomIn();
        });
        $('#btnZoomOut').on('click', function () {
            cropper.zoomOut();
        });
        $(".imageBox").autoScroll();
        $("#Album").autoScroll();


        $('.fancybox img').each(function () {
            $(this).click(function () {
                options.imgSrc = $(this).attr('src');
                cropper = $('.imageBox').cropbox(options);
                $('.nav-tabs li:nth(1) a').click();
                $('#btnCrop').click();
            });
        });
    });
</script>

cropbox.js

/**
 * Created by ezgoing on 14/9/2014.
 */

"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();
                },
                loadAfter: options.loadAfter || function () { }
            },
            setBackground = function (IsOnload) {
                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('onload');

            el.bind('mousedown', imgMouseDown);
            el.bind('mousemove', imgMouseMove);
            $(window).bind('mouseup', imgMouseUp);
            el.bind('mousewheel DOMMouseScroll', zoomImage);
            obj.loadAfter();
        };
        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);
    };
}));


$.fn.extend({
    "preventScroll": function () {
        $(this).each(function () {
            var _this = this;
            if (navigator.userAgent.indexOf('Firefox') >= 0) {   //firefox  
                _this.addEventListener('DOMMouseScroll', function (e) { e.preventDefault(); }, false);
            } else {
                _this.onmousewheel = function (e) {
                    return false;
                };
            }
        })
    },
    "autoScroll": function () {
        $(this).each(function () {
            var _this = this;
            if (navigator.userAgent.indexOf('Firefox') >= 0) {   //firefox  
                _this.addEventListener('DOMMouseScroll', function (e) {
                    _this.scrollTop += e.detail > 0 ? 60 : -60;
                    e.preventDefault();
                }, false);
            } else {
                _this.onmousewheel = function (e) {
                    e = e || window.event;
                    _this.scrollTop += e.wheelDelta > 0 ? -60 : 60;
                    return false;
                };
            }
        })
    }
});

 cropbox.css

@charset "utf-8";

.container {
     400px;
    position: relative;
    font-family: 微软雅黑;
    font-size: 12px;
    margin-left: 0px;
}

    .container p {
        line-height: 12px;
        line-height: 0px;
        height: 0px;
        margin: 10px;
        color: #bbb;
    }

.action {
     400px;
    height: 30px;
    margin: 10px 0;
}

.cropped {
    position: absolute;
    right: -230px;
    top: 0;
     200px;
    /*border: 1px #ddd solid;*/
    height: 300px;
    padding: 4px;
    /* box-shadow: 0px 0px 12px #ddd;*/
    text-align: center;
}

.imageBox {
    position: relative;
    height: 400px;
     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%;
         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;
     66px;
    display: inline-block;
    margin-bottom: 10px;
    height: 30px;
    line-height: 30px;
    font-size: 14px;
    color: #FFFFFF;
    margin: 0px 2px;
    background-color: #4dbec4;
    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 {
     100px;
    overflow: hidden;
    margin: 0 auto;
    position: relative;
    float: left;
}

    .new-contentarea label {
         100%;
        height: 100%;
        display: block;
    }

    .new-contentarea input[type=file] {
         100px;
        height: 30px;
        background: #333;
        margin: 0 auto;
        position: absolute;
        margin-right: -94px;
        top: 0;
        right /***/: 0px9;
        margin-right /***/: 0px9;
        width /***/: 10px9;
        opacity: 0;
        filter: alpha(opacity=0);
        z-index: 2;
    }

a.upload-img {
     100px;
    display: inline-block;
    margin-bottom: 10px;
    height: 30px;
    line-height: 30px;
    font-size: 14px;
    color: #FFFFFF;
    background-color: #4dbec4;
    border-radius: 3px;
    text-decoration: none;
    border: 0px #fff solid;
    box-shadow: 0px 0px 5px #B0B0B0;
}

    a.upload-img:hover {
        background-color: #ec7e70;
    }

.tc {
    text-align: center;
}