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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<title>基于cropper.js的图片裁剪</title>
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<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
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<meta name="format-detection" content="telephone=no">
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<link rel="stylesheet" href="css/cropper.min.css">
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<link rel="stylesheet" href="css/ImgCropping.css">
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</head>
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<body style="background: #eee">
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<button id="replaceImg" class="l-btn">更换图片</button>
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<div style="width: 320px;height: 320px;border: solid 1px #555;padding: 5px;margin-top: 10px">
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<img id="finalImg" src="" width="100%">
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</div>
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<!--图片裁剪框 start-->
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<div style="display: none" class="tailoring-container">
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<div class="black-cloth" onclick="closeTailor(this)"></div>
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<div class="tailoring-content">
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<div class="tailoring-content-one">
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<label title="上传图片" for="chooseImg" class="l-btn choose-btn">
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<input type="file" accept="image/jpg,image/jpeg,image/png" name="file" id="chooseImg" class="hidden" onchange="selectImg(this)">
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选择图片
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</label>
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<div class="close-tailoring" onclick="closeTailor(this)">×</div>
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</div>
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<div class="tailoring-content-two">
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<div class="tailoring-box-parcel">
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<img id="tailoringImg">
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</div>
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<div class="preview-box-parcel">
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<p>图片预览：</p>
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<div class="square previewImg"></div>
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<div class="circular previewImg"></div>
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</div>
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</div>
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<div class="tailoring-content-three">
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<button class="l-btn cropper-reset-btn">复位</button>
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<button class="l-btn cropper-rotate-btn">旋转</button>
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<button class="l-btn cropper-scaleX-btn">换向</button>
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<button class="l-btn sureCut" id="sureCut">确定</button>
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</div>
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</div>
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</div>
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<!--图片裁剪框 end-->
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<script src="http://www.jq22.com/jquery/jquery-1.10.2.js"></script>
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<script src="js/cropper.min.js"></script>
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<script>
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//弹出框水平垂直居中
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(window.onresize = function () {
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var win_height = $(window).height();
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var win_width = $(window).width();
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if (win_width <= 768){
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$(".tailoring-content").css({
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"top": (win_height - $(".tailoring-content").outerHeight())/2,
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"left": 0
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});
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}else{
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$(".tailoring-content").css({
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"top": (win_height - $(".tailoring-content").outerHeight())/2,
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"left": (win_width - $(".tailoring-content").outerWidth())/2
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});
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}
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})();
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//弹出图片裁剪框
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$("#replaceImg").on("click",function () {
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$(".tailoring-container").toggle();
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});
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//图像上传
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function selectImg(file) {
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if (!file.files || !file.files[0]){
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return;
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}
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var reader = new FileReader();
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reader.onload = function (evt) {
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var replaceSrc = evt.target.result;
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//更换cropper的图片
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$('#tailoringImg').cropper('replace', replaceSrc,false);//默认false，适应高度，不失真
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}
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reader.readAsDataURL(file.files[0]);
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}
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//cropper图片裁剪
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$('#tailoringImg').cropper({
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aspectRatio: 1/1,//默认比例
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preview: '.previewImg',//预览视图
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guides: false, //裁剪框的虚线(九宫格)
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autoCropArea: 0.5, //0-1之间的数值，定义自动剪裁区域的大小，默认0.8
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movable: false, //是否允许移动图片
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dragCrop: true, //是否允许移除当前的剪裁框，并通过拖动来新建一个剪裁框区域
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movable: true, //是否允许移动剪裁框
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resizable: true, //是否允许改变裁剪框的大小
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zoomable: false, //是否允许缩放图片大小
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mouseWheelZoom: false, //是否允许通过鼠标滚轮来缩放图片
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touchDragZoom: true, //是否允许通过触摸移动来缩放图片
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rotatable: true, //是否允许旋转图片
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crop: function(e) {
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// 输出结果数据裁剪图像。
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}
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});
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//旋转
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$(".cropper-rotate-btn").on("click",function () {
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$('#tailoringImg').cropper("rotate", 45);
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});
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//复位
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$(".cropper-reset-btn").on("click",function () {
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$('#tailoringImg').cropper("reset");
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});
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//换向
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var flagX = true;
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$(".cropper-scaleX-btn").on("click",function () {
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if(flagX){
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$('#tailoringImg').cropper("scaleX", -1);
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flagX = false;
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}else{
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$('#tailoringImg').cropper("scaleX", 1);
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flagX = true;
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}
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flagX != flagX;
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});
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//裁剪后的处理
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$("#sureCut").on("click",function () {
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if ($("#tailoringImg").attr("src") == null ){
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return false;
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}else{
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var cas = $('#tailoringImg').cropper('getCroppedCanvas');//获取被裁剪后的canvas
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var base64url = cas.toDataURL('image/png'); //转换为base64地址形式
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$("#finalImg").prop("src",base64url);//显示为图片的形式
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//关闭裁剪框
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closeTailor();
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}
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});
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//关闭裁剪框
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function closeTailor() {
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$(".tailoring-container").toggle();
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}
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</script>
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</body>
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</html>
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