1031 lines
29 KiB
Vue
1031 lines
29 KiB
Vue
<template>
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<view class="tui-container" @touchmove.stop.prevent="stop">
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<view class="tui-image-cropper" @touchend="cutTouchEnd" @touchstart="cutTouchStart" @touchmove="cutTouchMove">
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<view class="tui-content">
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<view class="tui-content-top tui-bg-transparent" :style="{ height: cutY + 'px', transitionProperty: cutAnimation ? '' : 'background' }"></view>
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<view class="tui-content-middle" :style="{ height: canvasHeight + 'px' }">
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<view class="tui-bg-transparent" :style="{ width: cutX + 'px', transitionProperty: cutAnimation ? '' : 'background' }"></view>
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<view class="tui-cropper-box" :style="{ width: canvasWidth + 'px', height: canvasHeight + 'px', borderColor: borderColor, transitionProperty: cutAnimation ? '' : 'background' }">
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<view v-for="(item, index) in 4" :key="index" class="tui-edge" :class="[`tui-${index < 2 ? 'top' : 'bottom'}-${index === 0 || index === 2 ? 'left' : 'right'}`]"
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:style="{
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width: edgeWidth,
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height: edgeWidth,
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borderColor: edgeColor,
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borderWidth: edgeBorderWidth,
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left: index === 0 || index === 2 ? `-${edgeOffsets}` : 'auto',
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right: index === 1 || index === 3 ? `-${edgeOffsets}` : 'auto',
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top: index < 2 ? `-${edgeOffsets}` : 'auto',
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bottom: index > 1 ? `-${edgeOffsets}` : 'auto'
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}"></view>
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</view>
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<view class="tui-flex-auto tui-bg-transparent" :style="{ transitionProperty: cutAnimation ? '' : 'background' }"></view>
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</view>
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<view class="tui-flex-auto tui-bg-transparent" :style="{ transitionProperty: cutAnimation ? '' : 'background' }"></view>
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</view>
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<image @load="imageLoad" @error="imageLoad" @touchstart="start" @touchmove="move" @touchend="end" :style="{
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width: imgWidth ? imgWidth + 'px' : 'auto',
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height: imgHeight ? imgHeight + 'px' : 'auto',
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transform: imgTransform,
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transitionDuration: (cutAnimation ? 0.35 : 0) + 's'
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}"
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class="tui-cropper-image" :src="imageUrl" v-if="imageUrl" mode="widthFix"></image>
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</view>
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<canvas canvas-id="tui-image-cropper" id="tui-image-cropper" :disable-scroll="true" :style="{ width: CROPPER_WIDTH * scaleRatio + 'px', height: CROPPER_HEIGHT * scaleRatio + 'px' }"
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class="tui-cropper-canvas"></canvas>
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<view class="tui-cropper-tabbar" v-if="!custom">
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<view class="tui-op-btn" @tap.stop="back">取消</view>
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<image :src="rotateImg" class="tui-rotate-img" @tap="setAngle"></image>
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<view class="tui-op-btn" @tap.stop="getImage">完成</view>
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</view>
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</view>
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</template>
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<script>
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/**
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* 注意：组件中使用的图片地址，将文件复制到自己项目中
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* 如果图片位置与组件同级，编译成小程序时图片会丢失
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* 拷贝static下整个components文件夹
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*也可直接转成base64（不建议）
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* */
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export default {
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name: 'tuiImageCropper',
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props: {
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//图片路径
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imageUrl: {
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type: String,
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default: ''
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},
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/*
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默认正方形，可修改大小控制比例
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裁剪框高度 px
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*/
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height: {
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type: Number,
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default: 280
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},
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//裁剪框宽度 px
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width: {
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type: Number,
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default: 280
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},
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//裁剪框最小宽度 px
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minWidth: {
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type: Number,
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default: 100
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},
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//裁剪框最小高度 px
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minHeight: {
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type: Number,
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default: 100
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},
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//裁剪框最大宽度 px
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maxWidth: {
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type: Number,
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default: 360
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},
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//裁剪框最大高度 px
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maxHeight: {
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type: Number,
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default: 360
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},
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//裁剪框border颜色
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borderColor: {
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type: String,
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default: 'rgba(255,255,255,0.1)'
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},
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//裁剪框边缘线颜色
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edgeColor: {
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type: String,
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default: '#FFFFFF'
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},
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//裁剪框边缘线宽度 w=h
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edgeWidth: {
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type: String,
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default: '34rpx'
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},
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//裁剪框边缘线border宽度
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edgeBorderWidth: {
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type: String,
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default: '6rpx'
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},
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//偏移距离，根据edgeBorderWidth进行调整
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edgeOffsets: {
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type: String,
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default: '6rpx'
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},
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/**
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* 如果宽度和高度都为true则裁剪框禁止拖动
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* 裁剪框宽度锁定
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*/
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lockWidth: {
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type: Boolean,
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default: false
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},
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//裁剪框高度锁定
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lockHeight: {
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type: Boolean,
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default: false
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},
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//锁定裁剪框比例（放大或缩小）
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lockRatio: {
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type: Boolean,
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default: false
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},
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//生成的图片尺寸相对剪裁框的比例
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scaleRatio: {
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type: Number,
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default: 2
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},
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//图片的质量，取值范围为 (0, 1]，不在范围内时当作1.0处理
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quality: {
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type: Number,
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default: 0.8
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},
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//图片旋转角度
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rotateAngle: {
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type: Number,
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default: 0
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},
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//图片最小缩放比
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minScale: {
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type: Number,
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default: 0.5
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},
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//图片最大缩放比
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maxScale: {
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type: Number,
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default: 2
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},
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//是否禁用触摸旋转（为false则可以触摸转动图片，limitMove为false生效）
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disableRotate: {
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type: Boolean,
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default: true
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},
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//是否限制移动范围(剪裁框只能在图片内,为true不可触摸转动图片)
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limitMove: {
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type: Boolean,
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default: true
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},
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//自定义操作栏（为true时隐藏底部操作栏）
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custom: {
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type: Boolean,
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default: false
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},
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//值发生改变开始裁剪（custom为true时生效）
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startCutting: {
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type: [Number, Boolean],
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default: 0
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},
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/**
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* 是否返回base64(H5端默认base64)
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* 支持平台：App，微信小程序，支付宝小程序,H5(默认url就是base64)
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**/
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isBase64: {
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type: Boolean,
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default: false
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},
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//裁剪时是否显示loadding
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loadding: {
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type: Boolean,
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default: true
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},
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//旋转icon
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rotateImg: {
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type: String,
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default: '/static/components/cropper/img_rotate.png'
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}
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},
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data() {
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return {
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MOVE_THROTTLE: null, //触摸移动节流setTimeout
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MOVE_THROTTLE_FLAG: true, //节流标识
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TIME_CUT_CENTER: null,
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CROPPER_WIDTH: 200, //裁剪框宽
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CROPPER_HEIGHT: 200, //裁剪框高
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CUT_START: null,
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cutX: 0, //画布x轴起点
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cutY: 0, //画布y轴起点0
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touchRelative: [{
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x: 0,
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y: 0
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}], //手指或鼠标和图片中心的相对位置
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flagCutTouch: false, //是否是拖动裁剪框
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hypotenuseLength: 0, //双指触摸时斜边长度
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flagEndTouch: false, //是否结束触摸
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canvasWidth: 0,
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canvasHeight: 0,
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imgWidth: 0, //图片宽度
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imgHeight: 0, //图片高度
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scale: 1, //图片缩放比
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angle: 0, //图片旋转角度
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cutAnimation: false, //是否开启图片和裁剪框过渡
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cutAnimationTime: null,
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imgTop: 0, //图片上边距
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imgLeft: 0, //图片左边距
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ctx: null,
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sysInfo: null
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};
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},
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computed: {
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imgTransform: function() {
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return `translate3d(${this.imgLeft - this.imgWidth / 2}px,${this.imgTop - this.imgHeight / 2}px,0) scale(${this.scale}) rotate(${this.angle}deg)`;
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}
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},
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watch: {
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imageUrl(val, oldVal) {
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this.imageReset();
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this.showLoading();
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uni.getImageInfo({
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src: val,
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success: res => {
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//计算图片尺寸
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this.imgComputeSize(res.width, res.height);
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if (this.limitMove) {
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//限制移动，不留空白处理
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this.imgMarginDetectionScale();
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}
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},
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fail: err => {
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this.imgComputeSize();
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if (this.limitMove) {
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this.imgMarginDetectionScale();
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}
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}
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});
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},
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//监听截取框宽高变化
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canvasWidth(val) {
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if (val < this.minWidth) {
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this.canvasWidth = this.minWidth;
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}
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this.computeCutSize();
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},
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canvasHeight(val) {
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if (val < this.minHeight) {
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this.canvasHeight = this.minHeight;
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}
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this.computeCutSize();
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},
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rotateAngle(val) {
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this.cutAnimation = true;
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this.angle = val;
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},
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angle(val) {
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this.moveStop();
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if (this.limitMove && val % 90) {
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this.angle = Math.round(val / 90) * 90;
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}
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this.imgMarginDetectionScale();
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},
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cutAnimation(val) {
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//开启过渡260毫秒之后自动关闭
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clearTimeout(this.cutAnimationTime);
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if (val) {
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this.cutAnimationTime = setTimeout(() => {
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this.cutAnimation = false;
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}, 260);
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}
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},
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limitMove(val) {
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if (val) {
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if (this.angle % 90) {
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this.angle = Math.round(this.angle / 90) * 90;
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}
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this.imgMarginDetectionScale();
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}
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},
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cutY(value) {
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this.cutDetectionPosition();
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},
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cutX(value) {
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this.cutDetectionPosition();
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},
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startCutting(val) {
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if (this.custom && val) {
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this.getImage();
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}
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}
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},
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mounted() {
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this.sysInfo = uni.getSystemInfoSync();
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this.imgTop = this.sysInfo.windowHeight / 2;
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this.imgLeft = this.sysInfo.windowWidth / 2;
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this.CROPPER_WIDTH = this.width;
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this.CROPPER_HEIGHT = this.height;
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this.canvasHeight = this.height;
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this.canvasWidth = this.width;
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this.ctx = uni.createCanvasContext('tui-image-cropper', this);
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this.setCutCenter();
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//设置裁剪框大小>设置图片尺寸>绘制canvas
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this.computeCutSize();
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//检查裁剪框是否在范围内
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this.cutDetectionPosition();
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setTimeout(() => {
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this.$emit('ready', {});
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}, 200);
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},
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methods: {
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//网络图片转成本地文件[同步执行]
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async getLocalImage(url) {
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return await new Promise((resolve, reject) => {
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uni.downloadFile({
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url: url,
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success: res => {
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resolve(res.tempFilePath);
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},
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fail: res => {
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reject(false)
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}
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})
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})
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},
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//返回裁剪后图片信息
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getImage() {
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if (!this.imageUrl) {
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uni.showToast({
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title: '请选择图片',
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icon: 'none'
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});
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return;
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}
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this.loadding && this.showLoading();
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let draw = async () => {
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//图片实际大小
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let imgWidth = this.imgWidth * this.scale * this.scaleRatio;
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let imgHeight = this.imgHeight * this.scale * this.scaleRatio;
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//canvas和图片的相对距离
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let xpos = this.imgLeft - this.cutX;
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let ypos = this.imgTop - this.cutY;
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//旋转画布
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this.ctx.translate(xpos * this.scaleRatio, ypos * this.scaleRatio);
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this.ctx.rotate((this.angle * Math.PI) / 180);
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let imgUrl = this.imageUrl;
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// #ifdef APP-PLUS || MP-WEIXIN
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if (~this.imageUrl.indexOf('https:')) {
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imgUrl = await this.getLocalImage(this.imageUrl)
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}
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// #endif
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this.ctx.drawImage(imgUrl, -imgWidth / 2, -imgHeight / 2, imgWidth, imgHeight);
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this.ctx.draw(false, () => {
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let params = {
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width: this.canvasWidth * this.scaleRatio,
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height: Math.round(this.canvasHeight * this.scaleRatio),
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destWidth: this.canvasWidth * this.scaleRatio,
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destHeight: Math.round(this.canvasHeight) * this.scaleRatio,
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fileType: 'png',
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quality: this.quality
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};
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let data = {
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url: '',
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base64: '',
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width: this.canvasWidth * this.scaleRatio,
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height: this.canvasHeight * this.scaleRatio
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};
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// #ifdef MP-ALIPAY
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if (this.isBase64) {
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this.ctx.toDataURL(params).then(dataURL => {
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data.base64 = dataURL;
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this.loadding && uni.hideLoading();
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this.$emit('cropper', data);
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});
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} else {
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this.ctx.toTempFilePath({
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...params,
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success: res => {
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data.url = res.tempFilePath;
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this.loadding && uni.hideLoading();
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this.$emit('cropper', data);
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}
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});
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}
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// #endif
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// #ifndef MP-ALIPAY
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// #ifdef MP-BAIDU || MP-TOUTIAO || H5
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this.isBase64 = false;
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// #endif
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if (this.isBase64) {
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uni.canvasGetImageData({
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canvasId: 'tui-image-cropper',
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x: 0,
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y: 0,
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width: this.canvasWidth * this.scaleRatio,
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height: Math.round(this.canvasHeight * this.scaleRatio),
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success: res => {
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const arrayBuffer = new Uint8Array(res.data);
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const base64 = uni.arrayBufferToBase64(arrayBuffer);
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data.base64 = base64;
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this.loadding && uni.hideLoading();
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this.$emit('cropper', data);
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}
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},this);
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} else {
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uni.canvasToTempFilePath({
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...params,
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canvasId: 'tui-image-cropper',
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success: res => {
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data.url = res.tempFilePath;
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// #ifdef H5
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data.base64 = res.tempFilePath;
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// #endif
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this.loadding && uni.hideLoading();
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this.$emit('cropper', data);
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},
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fail(res) {
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console.log(res);
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}
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},
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this
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);
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}
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// #endif
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});
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};
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if (this.CROPPER_WIDTH != this.canvasWidth || this.CROPPER_HEIGHT != this.canvasHeight) {
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this.CROPPER_WIDTH = this.canvasWidth;
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this.CROPPER_HEIGHT = this.canvasHeight;
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this.ctx.draw();
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this.$nextTick(() => {
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setTimeout(() => {
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draw();
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}, 100);
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});
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} else {
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draw();
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}
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},
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/**
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* 设置剪裁框和图片居中
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*/
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setCutCenter() {
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let sys = this.sysInfo || uni.getSystemInfoSync();
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let cutY = (sys.windowHeight - this.canvasHeight) * 0.5;
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let cutX = (sys.windowWidth - this.canvasWidth) * 0.5;
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//顺序不能变
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this.imgTop = this.imgTop - this.cutY + cutY;
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this.cutY = cutY; //截取的框上边距
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this.imgLeft = this.imgLeft - this.cutX + cutX;
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this.cutX = cutX; //截取的框左边距
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},
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imageReset() {
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// this.cutAnimation = true;
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this.scale = 1;
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this.angle = 0;
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let sys = this.sysInfo || uni.getSystemInfoSync();
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this.imgTop = sys.windowHeight / 2;
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this.imgLeft = sys.windowWidth / 2;
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},
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imageLoad(e) {
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this.imageReset();
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uni.hideLoading();
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this.$emit('imageLoad', {});
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},
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//检测剪裁框位置是否在允许的范围内(屏幕内)
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cutDetectionPosition() {
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let cutDetectionPositionTop = () => {
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//检测上边距是否在范围内
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if (this.cutY < 0) {
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this.cutY = 0;
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}
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if (this.cutY > this.sysInfo.windowHeight - this.canvasHeight) {
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|
this.cutY = this.sysInfo.windowHeight - this.canvasHeight;
|
|
}
|
|
},
|
|
cutDetectionPositionLeft = () => {
|
|
//检测左边距是否在范围内
|
|
if (this.cutX < 0) {
|
|
this.cutX = 0;
|
|
}
|
|
if (this.cutX > this.sysInfo.windowWidth - this.canvasWidth) {
|
|
this.cutX = this.sysInfo.windowWidth - this.canvasWidth;
|
|
}
|
|
};
|
|
//裁剪框坐标处理（如果只写一个参数则另一个默认为0，都不写默认居中）
|
|
if (this.cutY == null && this.cutX == null) {
|
|
let cutY = (this.sysInfo.windowHeight - this.canvasHeight) * 0.5;
|
|
let cutX = (this.sysInfo.windowWidth - this.canvasWidth) * 0.5;
|
|
this.cutY = cutY; //截取的框上边距
|
|
this.cutX = cutX; //截取的框左边距
|
|
} else if (this.cutY != null && this.cutX != null) {
|
|
cutDetectionPositionTop();
|
|
cutDetectionPositionLeft();
|
|
} else if (this.cutY != null && this.cutX == null) {
|
|
cutDetectionPositionTop();
|
|
this.cutX = (this.sysInfo.windowWidth - this.canvasWidth) / 2;
|
|
} else if (this.cutY == null && this.cutX != null) {
|
|
cutDetectionPositionLeft();
|
|
this.cutY = (this.sysInfo.windowHeight - this.canvasHeight) / 2;
|
|
}
|
|
},
|
|
/**
|
|
* 图片边缘检测-位置
|
|
*/
|
|
imgMarginDetectionPosition(scale) {
|
|
if (!this.limitMove) return;
|
|
let left = this.imgLeft;
|
|
let top = this.imgTop;
|
|
scale = scale || this.scale;
|
|
let imgWidth = this.imgWidth;
|
|
let imgHeight = this.imgHeight;
|
|
if ((this.angle / 90) % 2) {
|
|
imgWidth = this.imgHeight;
|
|
imgHeight = this.imgWidth;
|
|
}
|
|
left = this.cutX + (imgWidth * scale) / 2 >= left ? left : this.cutX + (imgWidth * scale) / 2;
|
|
left = this.cutX + this.canvasWidth - (imgWidth * scale) / 2 <= left ? left : this.cutX + this.canvasWidth - (
|
|
imgWidth * scale) / 2;
|
|
top = this.cutY + (imgHeight * scale) / 2 >= top ? top : this.cutY + (imgHeight * scale) / 2;
|
|
top = this.cutY + this.canvasHeight - (imgHeight * scale) / 2 <= top ? top : this.cutY + this.canvasHeight - (
|
|
imgHeight * scale) / 2;
|
|
this.imgLeft = left;
|
|
this.imgTop = top;
|
|
this.scale = scale;
|
|
},
|
|
/**
|
|
* 图片边缘检测-缩放
|
|
*/
|
|
imgMarginDetectionScale(scale) {
|
|
if (!this.limitMove) return;
|
|
scale = scale || this.scale;
|
|
let imgWidth = this.imgWidth;
|
|
let imgHeight = this.imgHeight;
|
|
if ((this.angle / 90) % 2) {
|
|
imgWidth = this.imgHeight;
|
|
imgHeight = this.imgWidth;
|
|
}
|
|
if (imgWidth * scale < this.canvasWidth) {
|
|
scale = this.canvasWidth / imgWidth;
|
|
}
|
|
if (imgHeight * scale < this.canvasHeight) {
|
|
scale = Math.max(scale, this.canvasHeight / imgHeight);
|
|
}
|
|
this.imgMarginDetectionPosition(scale);
|
|
},
|
|
/**
|
|
* 计算图片尺寸
|
|
*/
|
|
imgComputeSize(width, height) {
|
|
//默认按图片最小边 = 对应裁剪框尺寸
|
|
let imgWidth = width,
|
|
imgHeight = height;
|
|
if (imgWidth && imgHeight) {
|
|
if (imgWidth / imgHeight > (this.canvasWidth || this.width) / (this.canvasHeight || this.height)) {
|
|
imgHeight = this.canvasHeight || this.height;
|
|
imgWidth = (width / height) * imgHeight;
|
|
} else {
|
|
imgWidth = this.canvasWidth || this.width;
|
|
imgHeight = (height / width) * imgWidth;
|
|
}
|
|
} else {
|
|
let sys = this.sysInfo || uni.getSystemInfoSync();
|
|
imgWidth = sys.windowWidth;
|
|
imgHeight = 0;
|
|
}
|
|
this.imgWidth = imgWidth;
|
|
this.imgHeight = imgHeight;
|
|
},
|
|
//改变截取框大小
|
|
computeCutSize() {
|
|
if (this.canvasWidth > this.sysInfo.windowWidth) {
|
|
this.canvasWidth = this.sysInfo.windowWidth;
|
|
} else if (this.canvasWidth + this.cutX > this.sysInfo.windowWidth) {
|
|
this.cutX = this.sysInfo.windowWidth - this.cutX;
|
|
}
|
|
if (this.canvasHeight > this.sysInfo.windowHeight) {
|
|
this.canvasHeight = this.sysInfo.windowHeight;
|
|
} else if (this.canvasHeight + this.cutY > this.sysInfo.windowHeight) {
|
|
this.cutY = this.sysInfo.windowHeight - this.cutY;
|
|
}
|
|
},
|
|
//开始触摸
|
|
start(e) {
|
|
this.flagEndTouch = false;
|
|
if (e.touches.length == 1) {
|
|
//单指拖动
|
|
this.touchRelative[0] = {
|
|
x: e.touches[0].clientX - this.imgLeft,
|
|
y: e.touches[0].clientY - this.imgTop
|
|
};
|
|
} else {
|
|
//双指放大
|
|
let width = Math.abs(e.touches[0].clientX - e.touches[1].clientX);
|
|
let height = Math.abs(e.touches[0].clientY - e.touches[1].clientY);
|
|
this.touchRelative = [{
|
|
x: e.touches[0].clientX - this.imgLeft,
|
|
y: e.touches[0].clientY - this.imgTop
|
|
},
|
|
{
|
|
x: e.touches[1].clientX - this.imgLeft,
|
|
y: e.touches[1].clientY - this.imgTop
|
|
}
|
|
];
|
|
this.hypotenuseLength = Math.sqrt(Math.pow(width, 2) + Math.pow(height, 2));
|
|
}
|
|
},
|
|
moveThrottle() {
|
|
if (this.sysInfo.platform == 'android') {
|
|
clearTimeout(this.MOVE_THROTTLE);
|
|
this.MOVE_THROTTLE = setTimeout(() => {
|
|
this.MOVE_THROTTLE_FLAG = true;
|
|
}, 800 / 40);
|
|
return this.MOVE_THROTTLE_FLAG;
|
|
} else {
|
|
this.MOVE_THROTTLE_FLAG = true;
|
|
}
|
|
},
|
|
move(e) {
|
|
if (this.flagEndTouch || !this.MOVE_THROTTLE_FLAG) return;
|
|
this.MOVE_THROTTLE_FLAG = false;
|
|
this.moveThrottle();
|
|
this.moveDuring();
|
|
if (e.touches.length == 1) {
|
|
//单指拖动
|
|
let left = e.touches[0].clientX - this.touchRelative[0].x,
|
|
top = e.touches[0].clientY - this.touchRelative[0].y;
|
|
//图像边缘检测,防止截取到空白
|
|
this.imgLeft = left;
|
|
this.imgTop = top;
|
|
this.imgMarginDetectionPosition();
|
|
} else {
|
|
//双指放大
|
|
let width = Math.abs(e.touches[0].clientX - e.touches[1].clientX),
|
|
height = Math.abs(e.touches[0].clientY - e.touches[1].clientY),
|
|
hypotenuse = Math.sqrt(Math.pow(width, 2) + Math.pow(height, 2)),
|
|
scale = this.scale * (hypotenuse / this.hypotenuseLength),
|
|
current_deg = 0;
|
|
scale = scale <= this.minScale ? this.minScale : scale;
|
|
scale = scale >= this.maxScale ? this.maxScale : scale;
|
|
//图像边缘检测,防止截取到空白
|
|
// this.scale = scale;
|
|
this.imgMarginDetectionScale(scale);
|
|
//双指旋转(如果没禁用旋转)
|
|
let touchRelative = [{
|
|
x: e.touches[0].clientX - this.imgLeft,
|
|
y: e.touches[0].clientY - this.imgTop
|
|
},
|
|
{
|
|
x: e.touches[1].clientX - this.imgLeft,
|
|
y: e.touches[1].clientY - this.imgTop
|
|
}
|
|
];
|
|
if (!this.disableRotate) {
|
|
let first_atan = (180 / Math.PI) * Math.atan2(touchRelative[0].y, touchRelative[0].x);
|
|
let first_atan_old = (180 / Math.PI) * Math.atan2(this.touchRelative[0].y, this.touchRelative[0].x);
|
|
let second_atan = (180 / Math.PI) * Math.atan2(touchRelative[1].y, touchRelative[1].x);
|
|
let second_atan_old = (180 / Math.PI) * Math.atan2(this.touchRelative[1].y, this.touchRelative[1].x);
|
|
//当前旋转的角度
|
|
let first_deg = first_atan - first_atan_old,
|
|
second_deg = second_atan - second_atan_old;
|
|
if (first_deg != 0) {
|
|
current_deg = first_deg;
|
|
} else if (second_deg != 0) {
|
|
current_deg = second_deg;
|
|
}
|
|
}
|
|
this.touchRelative = touchRelative;
|
|
this.hypotenuseLength = Math.sqrt(Math.pow(width, 2) + Math.pow(height, 2));
|
|
//更新视图
|
|
this.angle = this.angle + current_deg;
|
|
this.scale = this.scale;
|
|
}
|
|
},
|
|
//结束操作
|
|
end(e) {
|
|
this.flagEndTouch = true;
|
|
this.moveStop();
|
|
},
|
|
//裁剪框处理
|
|
cutTouchMove(e) {
|
|
if (this.flagCutTouch && this.MOVE_THROTTLE_FLAG) {
|
|
if (this.lockRatio && (this.lockWidth || this.lockHeight)) return;
|
|
//节流
|
|
this.MOVE_THROTTLE_FLAG = false;
|
|
this.moveThrottle();
|
|
let width = this.canvasWidth,
|
|
height = this.canvasHeight,
|
|
cutY = this.cutY,
|
|
cutX = this.cutX,
|
|
size_correct = () => {
|
|
width = width <= this.maxWidth ? (width >= this.minWidth ? width : this.minWidth) : this.maxWidth;
|
|
height = height <= this.maxHeight ? (height >= this.minHeight ? height : this.minHeight) : this.maxHeight;
|
|
},
|
|
size_inspect = () => {
|
|
if ((width > this.maxWidth || width < this.minWidth || height > this.maxHeight || height < this.minHeight) &&
|
|
this.lockRatio) {
|
|
size_correct();
|
|
return false;
|
|
} else {
|
|
size_correct();
|
|
return true;
|
|
}
|
|
};
|
|
height = this.CUT_START.height + (this.CUT_START.corner > 1 && this.CUT_START.corner < 4 ? 1 : -1) * (this.CUT_START
|
|
.y - e.touches[0].clientY);
|
|
switch (this.CUT_START.corner) {
|
|
case 1:
|
|
width = this.CUT_START.width - this.CUT_START.x + e.touches[0].clientX;
|
|
if (this.lockRatio) {
|
|
height = width / (this.canvasWidth / this.canvasHeight);
|
|
}
|
|
if (!size_inspect()) return;
|
|
break;
|
|
case 2:
|
|
width = this.CUT_START.width - this.CUT_START.x + e.touches[0].clientX;
|
|
if (this.lockRatio) {
|
|
height = width / (this.canvasWidth / this.canvasHeight);
|
|
}
|
|
if (!size_inspect()) return;
|
|
cutY = this.CUT_START.cutY - (height - this.CUT_START.height);
|
|
break;
|
|
case 3:
|
|
width = this.CUT_START.width + this.CUT_START.x - e.touches[0].clientX;
|
|
if (this.lockRatio) {
|
|
height = width / (this.canvasWidth / this.canvasHeight);
|
|
}
|
|
if (!size_inspect()) return;
|
|
cutY = this.CUT_START.cutY - (height - this.CUT_START.height);
|
|
cutX = this.CUT_START.cutX - (width - this.CUT_START.width);
|
|
break;
|
|
case 4:
|
|
width = this.CUT_START.width + this.CUT_START.x - e.touches[0].clientX;
|
|
if (this.lockRatio) {
|
|
height = width / (this.canvasWidth / this.canvasHeight);
|
|
}
|
|
if (!size_inspect()) return;
|
|
cutX = this.CUT_START.cutX - (width - this.CUT_START.width);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
if (!this.lockWidth && !this.lockHeight) {
|
|
this.canvasWidth = width;
|
|
this.cutX = cutX;
|
|
this.canvasHeight = height;
|
|
this.cutY = cutY;
|
|
} else if (!this.lockWidth) {
|
|
this.canvasWidth = width;
|
|
this.cutX = cutX;
|
|
} else if (!this.lockHeight) {
|
|
this.canvasHeight = height;
|
|
this.cutY = cutY;
|
|
}
|
|
this.imgMarginDetectionScale();
|
|
}
|
|
},
|
|
cutTouchStart(e) {
|
|
let currentX = e.touches[0].clientX;
|
|
let currentY = e.touches[0].clientY;
|
|
|
|
/*
|
|
* (右下-1 右上-2 左上-3 左下-4)
|
|
* left_x [3,4]
|
|
* top_y [2,3]
|
|
* right_x [1,2]
|
|
* bottom_y [1,4]
|
|
*/
|
|
let left_x1 = this.cutX - 24;
|
|
let left_x2 = this.cutX + 24;
|
|
|
|
let top_y1 = this.cutY - 24;
|
|
let top_y2 = this.cutY + 24;
|
|
|
|
let right_x1 = this.cutX + this.canvasWidth - 24;
|
|
let right_x2 = this.cutX + this.canvasWidth + 24;
|
|
|
|
let bottom_y1 = this.cutY + this.canvasHeight - 24;
|
|
let bottom_y2 = this.cutY + this.canvasHeight + 24;
|
|
|
|
if (currentX > right_x1 && currentX < right_x2 && currentY > bottom_y1 && currentY < bottom_y2) {
|
|
this.moveDuring();
|
|
this.flagCutTouch = true;
|
|
this.flagEndTouch = true;
|
|
this.CUT_START = {
|
|
width: this.canvasWidth,
|
|
height: this.canvasHeight,
|
|
x: currentX,
|
|
y: currentY,
|
|
corner: 1
|
|
};
|
|
} else if (currentX > right_x1 && currentX < right_x2 && currentY > top_y1 && currentY < top_y2) {
|
|
this.moveDuring();
|
|
this.flagCutTouch = true;
|
|
this.flagEndTouch = true;
|
|
this.CUT_START = {
|
|
width: this.canvasWidth,
|
|
height: this.canvasHeight,
|
|
x: currentX,
|
|
y: currentY,
|
|
cutY: this.cutY,
|
|
cutX: this.cutX,
|
|
corner: 2
|
|
};
|
|
} else if (currentX > left_x1 && currentX < left_x2 && currentY > top_y1 && currentY < top_y2) {
|
|
this.moveDuring();
|
|
this.flagCutTouch = true;
|
|
this.flagEndTouch = true;
|
|
this.CUT_START = {
|
|
width: this.canvasWidth,
|
|
height: this.canvasHeight,
|
|
cutY: this.cutY,
|
|
cutX: this.cutX,
|
|
x: currentX,
|
|
y: currentY,
|
|
corner: 3
|
|
};
|
|
} else if (currentX > left_x1 && currentX < left_x2 && currentY > bottom_y1 && currentY < bottom_y2) {
|
|
this.moveDuring();
|
|
this.flagCutTouch = true;
|
|
this.flagEndTouch = true;
|
|
this.CUT_START = {
|
|
width: this.canvasWidth,
|
|
height: this.canvasHeight,
|
|
cutY: this.cutY,
|
|
cutX: this.cutX,
|
|
x: currentX,
|
|
y: currentY,
|
|
corner: 4
|
|
};
|
|
}
|
|
},
|
|
cutTouchEnd(e) {
|
|
this.moveStop();
|
|
this.flagCutTouch = false;
|
|
},
|
|
//停止移动时需要做的操作
|
|
moveStop() {
|
|
//清空之前的自动居中延迟函数并添加最新的
|
|
clearTimeout(this.TIME_CUT_CENTER);
|
|
this.TIME_CUT_CENTER = setTimeout(() => {
|
|
//动画启动
|
|
if (!this.cutAnimation) {
|
|
this.cutAnimation = true;
|
|
}
|
|
this.setCutCenter();
|
|
}, 800);
|
|
},
|
|
//移动中
|
|
moveDuring() {
|
|
//清空之前的自动居中延迟函数
|
|
clearTimeout(this.TIME_CUT_CENTER);
|
|
},
|
|
showLoading() {
|
|
uni.showLoading({
|
|
title: '请稍候...',
|
|
mask: true
|
|
});
|
|
},
|
|
stop() {},
|
|
back() {
|
|
uni.navigateBack();
|
|
},
|
|
setAngle() {
|
|
this.cutAnimation = true;
|
|
this.angle = this.angle + 90;
|
|
}
|
|
}
|
|
};
|
|
</script>
|
|
|
|
<style scoped>
|
|
.tui-container {
|
|
width: 100vw;
|
|
height: 100vh;
|
|
background-color: rgba(0, 0, 0, 0.6);
|
|
position: fixed;
|
|
top: 0;
|
|
left: 0;
|
|
z-index: 1;
|
|
}
|
|
|
|
.tui-image-cropper {
|
|
width: 100vw;
|
|
height: 100vh;
|
|
position: absolute;
|
|
}
|
|
|
|
.tui-content {
|
|
width: 100vw;
|
|
height: 100vh;
|
|
position: absolute;
|
|
z-index: 9;
|
|
display: flex;
|
|
flex-direction: column;
|
|
pointer-events: none;
|
|
}
|
|
|
|
.tui-bg-transparent {
|
|
background-color: rgba(0, 0, 0, 0.6);
|
|
transition-duration: 0.35s;
|
|
}
|
|
|
|
.tui-content-top {
|
|
pointer-events: none;
|
|
}
|
|
|
|
.tui-content-middle {
|
|
width: 100%;
|
|
height: 200px;
|
|
display: flex;
|
|
box-sizing: border-box;
|
|
}
|
|
|
|
.tui-cropper-box {
|
|
position: relative;
|
|
/* transition-duration: 0.3s; */
|
|
border-style: solid;
|
|
border-width: 1rpx;
|
|
box-sizing: border-box;
|
|
}
|
|
|
|
.tui-flex-auto {
|
|
flex: auto;
|
|
}
|
|
|
|
.tui-cropper-image {
|
|
width: 100%;
|
|
border-style: none;
|
|
position: absolute;
|
|
top: 0;
|
|
left: 0;
|
|
z-index: 2;
|
|
-webkit-backface-visibility: hidden;
|
|
backface-visibility: hidden;
|
|
transform-origin: center;
|
|
}
|
|
|
|
.tui-cropper-canvas {
|
|
position: fixed;
|
|
z-index: 10;
|
|
left: -2000px;
|
|
top: -2000px;
|
|
pointer-events: none;
|
|
}
|
|
|
|
.tui-edge {
|
|
border-style: solid;
|
|
pointer-events: auto;
|
|
position: absolute;
|
|
box-sizing: border-box;
|
|
}
|
|
|
|
.tui-top-left {
|
|
border-bottom-width: 0 !important;
|
|
border-right-width: 0 !important;
|
|
}
|
|
|
|
.tui-top-right {
|
|
border-bottom-width: 0 !important;
|
|
border-left-width: 0 !important;
|
|
}
|
|
|
|
.tui-bottom-left {
|
|
border-top-width: 0 !important;
|
|
border-right-width: 0 !important;
|
|
}
|
|
|
|
.tui-bottom-right {
|
|
border-top-width: 0 !important;
|
|
border-left-width: 0 !important;
|
|
}
|
|
|
|
.tui-cropper-tabbar {
|
|
width: 100%;
|
|
height: 120rpx;
|
|
padding: 0 40rpx;
|
|
box-sizing: border-box;
|
|
position: fixed;
|
|
left: 0;
|
|
bottom: 0;
|
|
z-index: 99;
|
|
display: flex;
|
|
align-items: center;
|
|
justify-content: space-between;
|
|
color: #ffffff;
|
|
font-size: 32rpx;
|
|
}
|
|
|
|
.tui-cropper-tabbar::after {
|
|
content: ' ';
|
|
position: absolute;
|
|
top: 0;
|
|
right: 0;
|
|
left: 0;
|
|
border-top: 1rpx solid rgba(255, 255, 255, 0.2);
|
|
-webkit-transform: scaleY(0.5) translateZ(0);
|
|
transform: scaleY(0.5) translateZ(0);
|
|
transform-origin: 0 100%;
|
|
}
|
|
|
|
.tui-op-btn {
|
|
height: 80rpx;
|
|
display: flex;
|
|
align-items: center;
|
|
}
|
|
|
|
.tui-rotate-img {
|
|
width: 44rpx;
|
|
height: 44rpx;
|
|
}
|
|
</style>
|