<template>
	<view class="yhdsl" v-show="isShow">
		<view>
			<view class="cropper-content">
				<view v-if="isShowImg" class="uni-corpper"
					:style="'width:' + cropperInitW + 'px;height:' + cropperInitH + 'px;background:#000'">
					<view class="uni-corpper-content" :style="
							'width:' +
								cropperW +
								'px;height:' +
								cropperH +
								'px;left:' +
								cropperL +
								'px;top:' +
								cropperT +
								'px'
						">
						<image :src="imageSrc" :style="'width:' + cropperW + 'px;height:' + cropperH + 'px'"></image>
						<view class="uni-corpper-crop-box" @touchstart.stop="contentStartMove"
							@touchmove.stop="contentMoveing" @touchend.stop="contentTouchEnd" :style="
								'left:' + cutL + 'px;top:' + cutT + 'px;right:' + cutR + 'px;bottom:' + cutB + 'px'
							">
							<view class="uni-cropper-view-box">
								<view class="uni-cropper-dashed-h"></view>
								<view class="uni-cropper-dashed-v"></view>
 
								<!-- 截图区域顶部 -->
								<view class="uni-cropper-line-t" data-drag="top" @touchstart.stop="dragStart"
									@touchmove.stop="dragMove"></view>
 
								<!-- 截图区域右侧 -->
								<view class="uni-cropper-line-r" data-drag="right" @touchstart.stop="dragStart"
									@touchmove.stop="dragMove"></view>
 
								<!-- 截图区域底部 -->
								<view class="uni-cropper-line-b" data-drag="bottom" @touchstart.stop="dragStart"
									@touchmove.stop="dragMove"></view>
 
								<!-- 截图区域左侧 -->
								<view class="uni-cropper-line-l" data-drag="left" @touchstart.stop="dragStart"
									@touchmove.stop="dragMove"></view>
 
								<!-- 右下角截图滑块 -->
								<view class="uni-cropper-point point-t" data-drag="top" @touchstart.stop="dragStart"
									@touchmove.stop="dragMove"></view>
								<view class="uni-cropper-point point-tr" data-drag="topTight"></view>
								<view class="uni-cropper-point point-r" data-drag="right" @touchstart.stop="dragStart"
									@touchmove.stop="dragMove"></view>
								<view class="uni-cropper-point point-rb" data-drag="rightBottom"
									@touchstart.stop="dragStart" @touchmove.stop="dragMove"></view>
								<view class="uni-cropper-point point-b" data-drag="bottom" @touchstart.stop="dragStart"
									@touchmove.stop="dragMove" @touchend.stop="dragEnd"></view>
								<view class="uni-cropper-point point-bl" data-drag="bottomLeft"></view>
								<view class="uni-cropper-point point-l" data-drag="left" @touchstart.stop="dragStart"
									@touchmove.stop="dragMove"></view>
								<view class="uni-cropper-point point-lt" data-drag="leftTop"></view>
							</view>
						</view>
					</view>
				</view>
			</view>
			<view class="cropper-config">
				<view class="button-box">
					<button type="warn" @click="chooseImage">重选</button>
					<button type="warn" @click="previewImg">预览</button>
					<button type="warn" @click="finish">完成</button>
				</view>
			</view>
			<canvas canvas-id="myCanvas" :style="
					'position:absolute;border: 2px solid red; width:' +
						imageW +
						'px;height:' +
						imageH +
						'px;top:-9999px;left:-9999px;'
				"></canvas>
		</view>
	</view>
</template>
 
<script>
	let sysInfo = uni.getSystemInfoSync();
	let SCREEN_WIDTH = sysInfo.screenWidth;
	let SCREEN_HEIGHT = sysInfo.windowHeight + 40;
	let PAGE_X, // 手按下的x位置
		PAGE_Y, // 手按下y的位置
		PR = sysInfo.pixelRatio, // dpi
		T_PAGE_X, // 手移动的时候x的位置
		T_PAGE_Y, // 手移动的时候Y的位置
		CUT_L, // 初始化拖拽元素的left值
		CUT_T, // 初始化拖拽元素的top值
		CUT_R, // 初始化拖拽元素的
		CUT_B, // 初始化拖拽元素的
		CUT_W, // 初始化拖拽元素的宽度
		CUT_H, //  初始化拖拽元素的高度
		IMG_RATIO, // 图片比例
		IMG_REAL_W, // 图片实际的宽度
		IMG_REAL_H, // 图片实际的高度
		DRAFG_MOVE_RATIO = 1, //移动时候的比例,
		INIT_DRAG_POSITION = 100, // 初始化屏幕宽度和裁剪区域的宽度之差，用于设置初始化裁剪的宽度
		DRAW_IMAGE_W = sysInfo.screenWidth; // 设置生成的图片宽度
	export default {
		/**
		 * 页面的初始数据
		 */
		data() {
			return {
				imageSrc: "",
				isShow: false,
				isShowImg: false,
				// 初始化的宽高
				cropperInitW: SCREEN_WIDTH,
				cropperInitH: SCREEN_HEIGHT,
				// 动态的宽高
				cropperW: SCREEN_WIDTH,
				cropperH: SCREEN_HEIGHT - 100,
				// 动态的left top值
				cropperL: 0,
				cropperT: 0,
				transL: 0,
				transT: 0,
				// 图片缩放值
				scaleP: 0,
				imageW: 0,
				imageH: 0,
				// 裁剪框 宽高
				cutL: 0,
				cutT: 0,
				cutB: SCREEN_WIDTH,
				cutR: "100%",
				qualityWidth: DRAW_IMAGE_W,
				innerAspectRadio: DRAFG_MOVE_RATIO,
			};
		},
		props: {
			/* 截图质量，压缩比  */
			quality: {
				type: Number | String,
				default: 1,
			},
 

			src: String,
 
			fileType: {
				type: String,
				default: "png",
				validator: function(t) {
					// 这个值必须匹配下列字符串中的一个
					return t === "png" || t === "jpg";
				},
			},
 
			/* 截取类型，自由截取free;固定比例截取（正方形）fixed  */
			mode: {
				type: String,
				default: "free",
				validator: function(t) {
					// 这个值必须匹配下列字符串中的一个
					return t === "free" || t === "fixed" || t === "scale";
				},
			},
			scale: {
				type: Number,
				default: 1,
			},
		},
		created() {
			if (this.src) {
				this.imageSrc = this.src;
				this.loadImage();
				this.isShow = true;
				this.isShowImg = true;
			}
		},
		methods: {
			setData: function(obj) {
				let that = this;
				Object.keys(obj).forEach(function(key) {
					that.$set(that.$data, key, obj[key]);
				});
			},
 
			/* 选择图片  */
			chooseImage: function() {
				var _this = this;
				uni.chooseImage({
					count: 1,
					success: function(res) {
						if(res.tempFiles[0].size / 1024 < 1024) {
							_this.setData({
								imageSrc: res.tempFilePaths[0],
							});
							_this.loadImage();
							_this.isShow = true;
						} else {
							uni.showToast({
								title: '图片大小不能超过1024KB，当前大小' + (res.tempFiles[0].size / 1024).toFixed(2) + 'KB',
								icon: 'none'
							})
						}
					},
				});
			},
			/* 将图片加载到画布  */
			loadImage: function() {
				var _this = this;
				uni.showLoading({
					title: "图片加载中...",
				});
 
				/* 获取图片信息  */
				uni.getImageInfo({
					src: _this.imageSrc,
					success: function success(res) {
						let imgH = res.height;
						let imgW = res.width;
 
						// let IMG_SCR_H_R = SCREEN_HEIGHT / imgH;
						// let IMG_SCR_W_R = SCREEN_WIDTH / imgW;
 
						/* 图片的宽高比  */
						IMG_RATIO = imgW / imgH;
 
						/**
						 * 如果图片更高一些，为确保图片能够完整在视窗内显示需如下处理
						 * 1. 缩放图片的高为 视窗高度减去底部菜单按钮高度（120）
						 * 2. 根据图片缩放后的高度，根据图片宽高比计算图片的宽度
						 * 3. 如果步骤2计算的图片宽度大于屏幕宽度，则需要再次调整图片宽度为视窗宽度-margin(10)
						 * 4. 根据步骤3的宽度，结合图片宽高比重新计算图片的高度
						 */
						if (IMG_RATIO < 1 && (SCREEN_HEIGHT - 120) * IMG_RATIO < SCREEN_WIDTH - 10) {
							IMG_REAL_W = (SCREEN_HEIGHT - 120) * IMG_RATIO;
							IMG_REAL_H = SCREEN_HEIGHT - 120;
						} else {
							IMG_REAL_W = SCREEN_WIDTH - 10;
							IMG_REAL_H = IMG_REAL_W / IMG_RATIO;
						}
 
						/* 初始化裁剪区域的位置和形状  */
						let [cutT, cutB, cutL, cutR] = _this.initCutArea(IMG_RATIO, IMG_REAL_H,
						IMG_REAL_W);
 
						_this.setData({
							/* 裁剪区域的宽高同图片尺寸  */
							cropperW: IMG_REAL_W,
							cropperH: IMG_REAL_H,
 
							/* 上下左右各留一定的margin已便更好的拖动裁剪区域  */
							cropperL: Math.ceil((SCREEN_WIDTH - IMG_REAL_W) / 2),
 
							/* 留出底部操作按钮位置 70  */
							cropperT: Math.ceil((SCREEN_HEIGHT - IMG_REAL_H - 90) / 2),
							cutL: cutL,
							cutT: cutT,
							cutR: cutR,
							cutB: cutB,
							// 图片缩放值
							imageW: IMG_REAL_W,
							imageH: IMG_REAL_H,
							scaleP: IMG_REAL_W / SCREEN_WIDTH,
							qualityWidth: DRAW_IMAGE_W,
							innerAspectRadio: IMG_RATIO,
						});
						_this.setData({
							isShowImg: true,
						});
						uni.hideLoading();
					},
				});
			},
 
			initCutArea(IMG_RATIO, IMG_REAL_H, IMG_REAL_W) {
				let _this = this;
				/* 自由裁剪裁剪区域默认覆盖整个图片  */
				let cutT = 0;
				let cutB = 0;
				let cutL = 0;
				let cutR = 0;
 
				/* 正方形裁剪，初始化裁剪区域为正方形并居中  */
				if (_this.mode == "fixed") {
					if (IMG_RATIO < 1) {
						/* 图片比较高  */
						cutT = (IMG_REAL_H - IMG_REAL_W) / 2;
						cutB = (IMG_REAL_H - IMG_REAL_W) / 2;
					} else {
						/* 图片比较宽  */
						cutL = (IMG_REAL_W - IMG_REAL_H) / 2;
						cutR = (IMG_REAL_W - IMG_REAL_H) / 2;
					}
				}
 
				/* 固定比例裁剪，初始化裁剪区域比例和设定值相同  */
				if (_this.mode == "scale") {
					let scale = +_this.scale;
					if (IMG_RATIO < 1) {
						/* 图片比较高  */
						if (IMG_REAL_W / scale > IMG_REAL_H) {
							cutT = cutB = 0;
							cutL = cutR = (IMG_REAL_W - IMG_REAL_H * scale) / 2;
						} else {
							cutR = cutL = 0;
							cutT = cutB = (IMG_REAL_H - IMG_REAL_W / scale) / 2;
						}
					} else {
						/* 图片比较宽  */
						if (IMG_REAL_H * scale > IMG_REAL_W) {
							cutL = cutR = 0;
							cutB = cutT = (IMG_REAL_H - IMG_REAL_W / scale) / 2;
						} else {
							cutT = cutB = 0;
							cutL = cutR = (IMG_REAL_W - IMG_REAL_H * scale) / 2;
						}
					}
				}
 
				return [cutT, cutB, cutL, cutR];
			},
			// 拖动时候触发的touchStart事件
			contentStartMove(e) {
				PAGE_X = e.touches[0].pageX;
				PAGE_Y = e.touches[0].pageY;
			},
			// 拖动时候触发的touchMove事件
			contentMoveing(e) {
				var _this = this;
				var dragLengthX = (PAGE_X - e.touches[0].pageX) * DRAFG_MOVE_RATIO;
				var dragLengthY = (PAGE_Y - e.touches[0].pageY) * DRAFG_MOVE_RATIO;
				// 左移
				if (dragLengthX > 0) {
					if (this.cutL - dragLengthX < 0) dragLengthX = this.cutL;
				} else {
					if (this.cutR + dragLengthX < 0) dragLengthX = -this.cutR;
				}
				if (dragLengthY > 0) {
					if (this.cutT - dragLengthY < 0) dragLengthY = this.cutT;
				} else {
					if (this.cutB + dragLengthY < 0) dragLengthY = -this.cutB;
				}
				this.setData({
					cutL: this.cutL - dragLengthX,
					cutT: this.cutT - dragLengthY,
					cutR: this.cutR + dragLengthX,
					cutB: this.cutB + dragLengthY,
				});
				PAGE_X = e.touches[0].pageX;
				PAGE_Y = e.touches[0].pageY;
			},
			contentTouchEnd() {},
 
			// 获取图片尺寸信息
			previewImg() {
				try {
					var _this = this;
					uni.showLoading({
						title: "图片生成中...",
					});
					// 将图片写入画布
					const ctx = uni.createCanvasContext("myCanvas", _this);
					ctx.drawImage(_this.imageSrc, 0, 0, IMG_REAL_W, IMG_REAL_H);
					ctx.draw(true, () => {
						// 获取画布要裁剪的位置和宽度   均为百分比 * 画布中图片的宽度    保证了在微信小程序中裁剪的图片模糊  位置不对的问题 canvasT = (_this.cutT / _this.cropperH) * (_this.imageH / pixelRatio)
						var canvasW = ((_this.cropperW - _this.cutL - _this.cutR) / _this.cropperW) * IMG_REAL_W;
						var canvasH = ((_this.cropperH - _this.cutT - _this.cutB) / _this.cropperH) * IMG_REAL_H;
						var canvasL = (_this.cutL / _this.cropperW) * IMG_REAL_W;
						var canvasT = (_this.cutT / _this.cropperH) * IMG_REAL_H;
						uni.canvasToTempFilePath({
								x: canvasL,
								y: canvasT,
								width: canvasW,
								height: canvasH,
								// destWidth: canvasW,
								// destHeight: canvasH,
								quality: +this.quality,
								fileType: this.fileType,
								canvasId: "myCanvas",
								success: function(res) {
									uni.hideLoading();
									// 成功获得地址的地方
									uni.previewImage({
										current: "", // 当前显示图片的http链接
										urls: [res.tempFilePath], // 需要预览的图片http链接列表
									});
								},
								fail: function(err) {
									uni.hideLoading();
									uni.showToast({
										title: "图片截取失败！",
										icon: "none",
									});
								},
							},
							_this
						);
					});
				} catch (e) {}
			},
 
			/* 完成裁剪，输出裁剪后的图片路径  */
			finish: function() {
				var _this = this;
				uni.showLoading({
					title: "图片生成中...",
				});
				// 将图片写入画布
				const ctx = uni.createCanvasContext("myCanvas", _this);
				ctx.drawImage(_this.imageSrc, 0, 0, IMG_REAL_W, IMG_REAL_H);
				ctx.draw(true, () => {
					// 获取画布要裁剪的位置和宽度   均为百分比 * 画布中图片的宽度    保证了在微信小程序中裁剪的图片模糊  位置不对的问题 canvasT = (_this.cutT / _this.cropperH) * (_this.imageH / pixelRatio)
					var canvasW = ((_this.cropperW - _this.cutL - _this.cutR) / _this.cropperW) * IMG_REAL_W;
					var canvasH = ((_this.cropperH - _this.cutT - _this.cutB) / _this.cropperH) * IMG_REAL_H;
					var canvasL = (_this.cutL / _this.cropperW) * IMG_REAL_W;
					var canvasT = (_this.cutT / _this.cropperH) * IMG_REAL_H;
					console.log(canvasW,canvasH,'canvasHcanvasHcanvasHcanvasH')
					uni.canvasToTempFilePath({
							x: canvasL,
							y: canvasT,
							// width: canvasW,
							// height: canvasH,
							width: 800,
							height: 960,
							destWidth: 800,
							destHeight: 960,
							quality: +this.quality,
							// fileType: this.fileType,
							fileType: 'jpg',
							canvasId: "myCanvas",
							success: function(res) {
								uni.hideLoading();
								console.log(res,'resresres')
								// 成功获得地址的地方
								_this.$emit("uploadImg", res.tempFilePath);
								_this.isShow = false;
							},
							fail: function(err) {
								uni.hideLoading();
								uni.showToast({
									title: "图片截取失败！",
									icon: "none",
								});
							},
						},
						_this
					);
				});
			},
 
			// 设置大小的时候触发的touchStart事件
			dragStart(e) {
				T_PAGE_X = e.touches[0].pageX;
				T_PAGE_Y = e.touches[0].pageY;
				CUT_L = this.cutL;
				CUT_R = this.cutR;
				CUT_B = this.cutB;
				CUT_T = this.cutT;
			},
 
			// 设置大小的时候触发的touchMove事件
			dragMove(e) {
				// this.mode == "fixed" ? this.fixedScaleDrag(e) : this.freeDrag(e);
				this[this.mode + "Drag"](e);
			},
 
			/* 固定比例（正方形）截取 ，只有右下角裁剪滑动拖动有效*/
			fixedDrag(e) {
				var _this = this;
				var dragType = e.target.dataset.drag;
				switch (dragType) {
					case "rightBottom":
						var dragLengthX = (T_PAGE_X - e.touches[0].pageX) * DRAFG_MOVE_RATIO;
						// var dragLengthY = (T_PAGE_Y - e.touches[0].pageY) * DRAFG_MOVE_RATIO;
						// if (CUT_B + dragLengthY < 0) dragLengthY = -CUT_B;
 
						if (CUT_R + dragLengthX < 0) dragLengthX = -CUT_R;
 
						/* 右侧和底部同比变化 */
						let cutB = CUT_B + dragLengthX;
						let cutR = CUT_R + dragLengthX;
 
						/* 越界判断  */
						if (_this.cutB == 0 && cutB < 0) return;
						if (_this.cutR == 0 && cutR < 0) return;
 
						(_this.cutB > 0 || CUT_B == 0) &&
						this.setData({
							cutB: cutB < 0 ? 0 : cutB,
							cutR: cutR,
						});
						break;
					default:
						break;
				}
			},
 
			/* 等比例截图，只能通过右下角的滑块改变截图区域  */
			scaleDrag(e) {
				var _this = this;
				var dragType = e.target.dataset.drag;
				switch (dragType) {
					case "rightBottom":
						var dragLengthX = (T_PAGE_X - e.touches[0].pageX) * DRAFG_MOVE_RATIO;
						// var dragLengthY = (T_PAGE_Y - e.touches[0].pageY) * DRAFG_MOVE_RATIO;
						// if (CUT_B + dragLengthY < 0) dragLengthY = -CUT_B;
 
						if (CUT_R + dragLengthX < 0) dragLengthX = -CUT_R;
 
						/* 右侧和底部同比变化 */
						let cutB = CUT_B + dragLengthX / _this.scale;
						let cutR = CUT_R + dragLengthX;
 
						/* 越界判断  */
						if (_this.cutB == 0 && cutB < 0) return;
						if (_this.cutR == 0 && cutR < 0) return;
 
						(_this.cutB > 0 || CUT_B == 0) &&
						this.setData({
							cutB: cutB < 0 ? 0 : cutB,
							cutR: cutR,
						});
						break;
					default:
						break;
				}
			},
 
			/* 自由截取,整个裁剪边框均能拖动  */
			freeDrag(e) {
				var _this = this;
				var dragType = e.target.dataset.drag;
				switch (dragType) {
					case "right":
						var dragLength = (T_PAGE_X - e.touches[0].pageX) * DRAFG_MOVE_RATIO;
						if (CUT_R + dragLength < 0) dragLength = -CUT_R;
						this.setData({
							cutR: CUT_R + dragLength,
						});
						break;
					case "left":
						var dragLength = (T_PAGE_X - e.touches[0].pageX) * DRAFG_MOVE_RATIO;
						if (CUT_L - dragLength < 0) dragLength = CUT_L;
						if (CUT_L - dragLength > this.cropperW - this.cutR)
							dragLength = CUT_L - (this.cropperW - this.cutR);
						this.setData({
							cutL: CUT_L - dragLength,
						});
						break;
					case "top":
						var dragLength = (T_PAGE_Y - e.touches[0].pageY) * DRAFG_MOVE_RATIO;
						if (CUT_T - dragLength < 0) dragLength = CUT_T;
						if (CUT_T - dragLength > this.cropperH - this.cutB)
							dragLength = CUT_T - (this.cropperH - this.cutB);
						this.setData({
							cutT: CUT_T - dragLength,
						});
						break;
					case "bottom":
						var dragLength = (T_PAGE_Y - e.touches[0].pageY) * DRAFG_MOVE_RATIO;
						if (CUT_B + dragLength < 0) dragLength = -CUT_B;
						this.setData({
							cutB: CUT_B + dragLength,
						});
						break;
					case "rightBottom":
						var dragLengthX = (T_PAGE_X - e.touches[0].pageX) * DRAFG_MOVE_RATIO;
						var dragLengthY = (T_PAGE_Y - e.touches[0].pageY) * DRAFG_MOVE_RATIO;
						if (CUT_B + dragLengthY < 0) dragLengthY = -CUT_B;
						if (CUT_R + dragLengthX < 0) dragLengthX = -CUT_R;
						let cutB = CUT_B + dragLengthY;
						let cutR = CUT_R + dragLengthX;
						this.setData({
							cutB: cutB,
							cutR: cutR,
						});
						break;
					default:
						break;
				}
			},
		},
	};
</script>
 
<style>
	/* pages/uni-cropper/index.wxss */
	.yhdsl {
		background-color: #fff;
		position: fixed;
		top: 0;
		left: 0;
		right: 0;
		bottom: 50px;
		display: block;
		align-items: center;
		flex-direction: column;
		z-index: 998;
		height: 100vh;
	}
 
	.cropper-config {
		position: fixed;
		z-index: 999;
		bottom: 10px;
		left: 0;
		right: 0;
 
		width: 90%;
		margin: 0 auto;
		/* padding: 20upx 40upx; */
	}
 
	.button-box {
		position: absolute;
		bottom: 0;
		display: flex;
		flex-direction: row;
		justify-content: space-between;
 
		width: 100%;
	}
 
	.button-box button {
		width: 25%;
		line-height: 35px;
		height: 35px;
		background-color: #509cff;
	}
 
	.cropper-content {
		width: 100%;
		min-height: 750upx;
	}
 
	.uni-corpper {
		position: relative;
 
		overflow: hidden;
 
		box-sizing: border-box;
		margin: 0 auto;
 
		-webkit-user-select: none;
		-moz-user-select: none;
		-ms-user-select: none;
		user-select: none;
 
		-webkit-tap-highlight-color: transparent;
		-webkit-touch-callout: none;
	}
 
	.uni-corpper-content {
		position: relative;
	}
 
	.uni-corpper-content image {
		display: block;
 
		width: 100%;
		min-width: 0 !important;
		max-width: none !important;
		/* height: 100%; */
		min-height: 0 !important;
		/* max-height: none !important; */
 
		max-height: calc(100vh - 100upx);
		margin: 0 auto;
 
		image-orientation: 0deg !important;
	}
 
	/* 移动图片效果 */
	.uni-cropper-drag-box {
		position: absolute;
		z-index: 1;
		top: 0;
		right: 0;
		bottom: 0;
		left: 0;
 
		cursor: move;
 
		background: rgba(0, 0, 0, 0.479);
	}
 
	/* 内部的信息 */
	.uni-corpper-crop-box {
		position: absolute;
		z-index: 2;
		max-height: calc(100vh - 100upx);
		background: rgba(56, 50, 50, 0.479);
	}
 
	.uni-corpper-crop-box .uni-cropper-view-box {
		position: relative;
 
		display: block;
		overflow: visible;
 
		width: 100%;
		height: 100%;
 
		max-height: calc(100vh - 100upx);
		outline: 5upx solid rgb(43, 89, 255);
		outline-color: rgba(255, 255 255, 1);
	}
 
	/* 横向虚线 */
	.uni-cropper-dashed-h {
		position: absolute;
		top: 33.33333333%;
		left: 0;
 
		width: 100%;
		height: 33.33333333%;
 
		border-top: 1upx dashed rgba(255, 255, 255, 0.5);
		border-bottom: 1upx dashed rgba(255, 255, 255, 0.5);
	}
 
	/* 纵向虚线 */
	.uni-cropper-dashed-v {
		position: absolute;
		top: 0;
		left: 33.33333333%;
 
		width: 33.33333333%;
		height: 100%;
 
		border-right: 1upx dashed rgba(255, 255, 255, 0.5);
		border-left: 1upx dashed rgba(255, 255, 255, 0.5);
	}
 
	/* 四个方向的线  为了之后的拖动事件*/
	.uni-cropper-line-t {
		position: absolute;
		top: 0;
		left: 0;
 
		display: block;
 
		width: 100%;
		height: 3upx;
 
		cursor: n-resize;
 
		opacity: 0.1;
		background-color: white;
	}
 
	.uni-cropper-line-t::before {
		position: absolute;
		z-index: 11;
		top: 50%;
		right: 0upx;
		bottom: 0;
 
		width: 100%;
		height: 41upx;
 
		content: "";
		-webkit-transform: translate3d(0, -50%, 0);
		transform: translate3d(0, -50%, 0);
 
		background: transparent;
	}
 
	.uni-cropper-line-r {
		position: absolute;
		top: 0;
		right: 0upx;
 
		display: block;
 
		width: 3upx;
		height: 100%;
 
		cursor: e-resize;
 
		opacity: 0.1;
		background-color: white;
	}
 
	.uni-cropper-line-r::before {
		position: absolute;
		z-index: 11;
		top: 0;
		bottom: 0;
		left: 50%;
 
		width: 41upx;
		height: 100%;
 
		content: "";
		-webkit-transform: translate3d(-50%, 0, 0);
		transform: translate3d(-50%, 0, 0);
 
		background: transparent;
	}
 
	.uni-cropper-line-b {
		position: absolute;
		bottom: 0;
		left: 0;
 
		display: block;
 
		width: 100%;
		height: 3upx;
 
		cursor: s-resize;
 
		opacity: 0.1;
		background-color: white;
	}
 
	.uni-cropper-line-b::before {
		position: absolute;
		z-index: 11;
		top: 50%;
		right: 0upx;
		bottom: 0;
 
		width: 100%;
		height: 41upx;
 
		content: "";
		-webkit-transform: translate3d(0, -50%, 0);
		transform: translate3d(0, -50%, 0);
 
		background: transparent;
	}
 
	.uni-cropper-line-l {
		position: absolute;
		top: 0;
		left: 0;
 
		display: block;
 
		width: 3upx;
		height: 100%;
 
		cursor: w-resize;
 
		opacity: 0.1;
		background-color: white;
	}
 
	.uni-cropper-line-l::before {
		position: absolute;
		z-index: 11;
		top: 0;
		bottom: 0;
		left: 50%;
 
		width: 41upx;
		height: 100%;
 
		content: "";
		-webkit-transform: translate3d(-50%, 0, 0);
		transform: translate3d(-50%, 0, 0);
 
		background: transparent;
	}
 
	.uni-cropper-point {
		position: absolute;
		z-index: 3;
 
		width: 5upx;
		height: 5upx;
 
		opacity: 0.75;
		background-color: rgb(145, 132, 132);
	}
 
	.point-t {
		top: -3upx;
		left: 50%;
 
		margin-left: -3upx;
 
		cursor: n-resize;
	}
 
	.point-tr {
		top: -3upx;
		left: 100%;
 
		margin-left: -3upx;
 
		cursor: n-resize;
	}
 
	.point-r {
		top: 50%;
		left: 100%;
 
		margin-top: -3upx;
		margin-left: -3upx;
 
		cursor: n-resize;
	}
 
	.point-rb {
		position: absolute;
		z-index: 1112;
		top: 100%;
		left: 100%;
 
		width: 30upx;
		height: 30upx;
		border-radius: 50%;
 
		cursor: n-resize;
		-webkit-transform: translate3d(-50%, -50%, 0);
		transform: translate3d(-50%, -50%, 0);
 
		opacity: 1;
		background-color: rgb(231, 222, 222);
		background-color: #509cff;
	}
 
	.point-b {
		top: 100%;
		left: 50%;
 
		margin-top: -3upx;
		margin-left: -3upx;
 
		cursor: n-resize;
	}
 
	.point-bl {
		top: 100%;
		left: 0;
 
		margin-top: -3upx;
		margin-left: -3upx;
 
		cursor: n-resize;
	}
 
	.point-l {
		top: 50%;
		left: 0;
 
		margin-top: -3upx;
		margin-left: -3upx;
 
		cursor: n-resize;
	}
 
	.point-lt {
		top: 0;
		left: 0;
 
		margin-top: -3upx;
		margin-left: -3upx;
 
		cursor: n-resize;
	}
 
	/* 裁剪框预览内容 */
	.uni-cropper-viewer {
		position: relative;
 
		overflow: hidden;
 
		width: 100%;
		height: 100%;
	}
 
	.uni-cropper-viewer image {
		position: absolute;
		z-index: 2;
	}
</style>