圖片裁剪
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User: MSI-PC
Date: 2019/4/19
Time: 14:27
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--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<<html lang="en">
<head>
<meta charset="UTF-8">
<title>基於cropper.js的圖片裁剪</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
<meta name="format-detection" content="telephone=no">
<link rel="stylesheet" href="/css/cropper.min.css">
<link rel="stylesheet" href="/css/ImgCropping.css">
</head>
<body style="background: #eee">
<button id="replaceImg" class="l-btn">更換圖片</button>
<div style="width: 320px;height: 320px;border: solid 1px #555;padding: 5px;margin-top: 10px">
<img id="finalImg" src="" width="100%">
</div>
<!--圖片裁剪框 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="上傳圖片" 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)">
選擇圖片
</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>圖片預覽:</p>
<div class="square previewImg"></div>
<div class="circular previewImg"></div>
</div>
</div>
<div class="tailoring-content-three">
<button class="l-btn cropper-reset-btn">復位</button>
<button class="l-btn cropper-rotate-btn">旋轉</button>
<button class="l-btn cropper-scaleX-btn">換向</button>
<button class="l-btn sureCut" id="sureCut">肯定</button>
</div>
</div>
</div>
<!--圖片裁剪框 end-->
<script src="http://www.jq22.com/jquery/jquery-1.10.2.js"></script>
<script src="/js/cropper.min.js"></script>
<script>
//彈出框水平垂直居中
(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
});
}
})();
//彈出圖片裁剪框
$("#replaceImg").on("click",function () {
$(".tailoring-container").toggle();
});
//圖像上傳
function selectImg(file) {
if (!file.files || !file.files[0]){
return;
}
var reader = new FileReader();
reader.onload = function (evt) {
var replaceSrc = evt.target.result;
//更換cropper的圖片
$('#tailoringImg').cropper('replace', replaceSrc,false);//默認false,適應高度,不失真
}
reader.readAsDataURL(file.files[0]);
}
//cropper圖片裁剪
$('#tailoringImg').cropper({
aspectRatio: 1/1,//默認比例
preview: '.previewImg',//預覽視圖
guides: false, //裁剪框的虛線(九宮格)
autoCropArea: 0.5, //0-1之間的數值,定義自動剪裁區域的大小,默認0.8
movable: false, //是否容許移動圖片
dragCrop: true, //是否容許移除當前的剪裁框,並經過拖動來新建一個剪裁框區域
movable: true, //是否容許移動剪裁框
resizable: true, //是否容許改變裁剪框的大小
zoomable: false, //是否容許縮放圖片大小
mouseWheelZoom: false, //是否容許經過鼠標滾輪來縮放圖片
touchDragZoom: true, //是否容許經過觸摸移動來縮放圖片
rotatable: true, //是否容許旋轉圖片
crop: function(e) {
// 輸出結果數據裁剪圖像。
}
});
//旋轉
$(".cropper-rotate-btn").on("click",function () {
$('#tailoringImg').cropper("rotate", 45);
});
//復位
$(".cropper-reset-btn").on("click",function () {
$('#tailoringImg').cropper("reset");
});
//換向
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;
});
//裁剪後的處理
$("#sureCut").on("click",function () {
if ($("#tailoringImg").attr("src") == null ){
return false;
}else{
var cas = $('#tailoringImg').cropper('getCroppedCanvas');//獲取被裁剪後的canvas
var base64url = cas.toDataURL('image/png'); //轉換爲base64地址形式
$("#finalImg").prop("src",base64url);//顯示爲圖片的形式
//關閉裁剪框
closeTailor();
}
});
//關閉裁剪框
function closeTailor() {
$(".tailoring-container").toggle();
}
</script>
</body>
</html>