所需的资源文件
<link rel="stylesheet" href="https://cdn.bootcss.com/cropper/4.0.0-beta/cropper.css"> <script src="http://www.jq22.com/jquery/jquery-1.10.2.js"></script> <script src="https://cdn.bootcss.com/cropper/4.0.0-beta/cropper.js"></script>
html代码
<body style="background: #eee">
<button id="replaceImg" class="l-btn">更换图片</button>
<div style=" 320px;height: 320px;border: solid 1px #555;padding: 5px;margin-top: 10px">
<img id="finalImg" src="" width="100%">
</div>
<!--图片裁剪框 start-->
<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="l-btn choose-btn">
<input type="file" accept="image/jpg,image/jpeg,image/png" name="file" id="chooseImg" class="hidden" onchange="selectImg(this)">
选择图片
</label>
<div class="close-tailoring" onclick="closeTailor(this)">×</div>
</div>
<div class="tailoring-content-two">
<div class="tailoring-box-parcel">
<img id="tailoringImg">
</div>
<div class="preview-box-parcel">
<p>图片预览：</p>
<div class="square previewImg"></div>
</div>
</div>
<div class="tailoring-content-three">
<button class="l-btn cropper-reset-btn">复位</button>
<button class="l-btn cropper-rotate-btn">旋转</button>
<button class="l-btn cropper-scaleX-btn">换向</button>
<button class="l-btn sureCut" id="sureCut">确定</button>
</div>
</div>
</div>
<!--图片裁剪框 end-->
</body>
css代码
*{
margin: 0;padding: 0;
}
.l-btn{
display: inline-block;
outline: none;
resize: none;
border: none;
padding:5px 10px;
background: #8C85E6;
color: #fff;
border:solid 1px #8C85E6;
border-radius: 3px;
font-size: 14px;
}
.l-btn:hover{
background: #8078e3;
animation: anniu 1s infinite;
}
.l-btn:active{
box-shadow: 0 2px 3px rgba(0,0,0,.2) inset;
}
.hidden{
display: none;
}
.tailoring-container, .tailoring-container div, .tailoring-container p{
margin: 0;padding: 0;
box-sizing: border-box;
-webkit-box-sizing: border-box;
-moz-box-sizing: border-box;
}
.tailoring-container{
position: fixed;
100%;
height: 100%;
z-index: 1000;
top: 0;
left: 0;
}
.tailoring-container .black-cloth{
position: fixed;
100%;
height: 100%;
background: #111;
opacity: .9;
z-index: 1001;
}
.tailoring-container .tailoring-content{
position: absolute;
768px;
height: 560px;
background: #fff;
z-index: 1002;
left: 0;
top: 0;
border-radius: 10px;
box-shadow: 0 0 10px #000;
padding: 10px;
}
.tailoring-content-one{
height: 40px;
100%;
border-bottom: 1px solid #DDD ;
}
.tailoring-content .choose-btn{
float: left;
}
.tailoring-content .close-tailoring{
display: inline-block;
height: 30px;
30px;
border-radius: 100%;
background: #eee;
color: #fff;
font-size: 22px;
text-align: center;
line-height: 30px;
float: right;
cursor: pointer;
}
.tailoring-content .close-tailoring:hover{
background: #ccc;
}
.tailoring-content .tailoring-content-two{
100%;
height: 460px;
position: relative;
padding: 5px 0;
}
.tailoring-content .tailoring-box-parcel{
520px;
height: 450px;
position: absolute;
left: 0;
border: solid 1px #ddd;
}
.tailoring-content .preview-box-parcel{
display: inline-block;
228px;
height: 450px;
position: absolute;
right: 0;
padding: 4px 14px;
}
.preview-box-parcel p{
color: #555;
}
.previewImg{
200px;
height: 200px;
overflow: hidden;
}
.preview-box-parcel .square{
margin-top: 10px;
border: solid 1px #ddd;
}
.preview-box-parcel .circular{
border-radius: 100%;
margin-top: 10px;
border: solid 1px #ddd;
}
.tailoring-content .tailoring-content-three{
100%;
height: 40px;
border-top: 1px solid #DDD ;
padding-top: 10px;
}
.sureCut{
float: right;
}
@media all and (max- 768px) {
.tailoring-container .tailoring-content{
100%;
min- 320px;
height: 460px;
}
.tailoring-content .tailoring-content-two{
height: 360px;
}
.tailoring-content .tailoring-box-parcel{
height: 350px;
}
.tailoring-container .tailoring-box-parcel{
100%;
}
.tailoring-container .preview-box-parcel{
display: none;
}
}
JS代码
//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
});
}
})();
//弹出图片裁剪框
$("#replaceImg").on("click",function () {
$(".tailoring-container").toggle();
});
//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]);
}
//cropper图片裁剪
$('#tailoringImg').cropper({
aspectRatio: 3/1,//默认比例
preview: '.previewImg',//预览视图
guides: false, //裁剪框的虚线(九宫格)
autoCropArea: 1, //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
$("#sureCut").on("click",function () {
if ($("#tailoringImg").attr("src") == null ){
return false;
}else{
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
$("#finalImg").prop("src",base64url);//显示为图片的形式
//关闭裁剪框
closeTailor();
}
});
//关闭裁剪框
function closeTailor() {
$(".tailoring-container").toggle();
}