841 lines
20 KiB
Vue
841 lines
20 KiB
Vue
<template>
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<view class="lime-clipper" :class="{open: value}" disable-scroll :style="'z-index: ' + zIndex + ';' + customStyle">
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<view class="lime-clipper-mask"
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@touchstart.stop.prevent="clipTouchStart"
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@touchmove.stop.prevent="clipTouchMove"
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@touchend.stop.prevent="clipTouchEnd">
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<view class="lime-clipper__content" :style="clipStyle"><view class="lime-clipper__edge" v-for="(item, index) in [0, 0, 0, 0]" :key="index"></view></view>
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</view>
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<image
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class="lime-clipper-image"
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@error="imageLoad"
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@load="imageLoad"
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@touchstart="imageTouchStart"
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@touchmove="imageTouchMove"
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@touchend="imageTouchEnd"
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:src="image"
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:mode="imageWidth == 'auto' ? 'widthFix' : 'scaleToFill'"
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v-if="image"
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:style="imageStyle"
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/>
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<canvas
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canvas-id="lime-clipper"
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id="lime-clipper"
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disable-scroll
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:style="'width: ' + canvasWidth * scaleRatio + 'px; height:' + canvasHeight * scaleRatio + 'px;'"
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class="lime-clipper-canvas"
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></canvas>
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<view class="lime-clipper-tools">
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<view class="lime-clipper-tools__btns">
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<view v-if="isShowCancelBtn" @tap="cancel">
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<slot name="cancel" v-if="$slots.cancel" />
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<view v-else class="cancel">取消</view>
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</view>
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<view v-if="isShowPhotoBtn" @tap="uploadImage">
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<slot name="photo" v-if="$slots.photo" />
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<image v-else src="/uni_modules/lime-clipper/static/photo.svg" />
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</view>
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<view v-if="isShowRotateBtn" @tap="rotate">
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<slot name="rotate" v-if="$slots.rotate" />
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<image v-else src="/uni_modules/lime-clipper/static/rotate.svg" data-type="inverse" />
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</view>
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<view v-if="isShowConfirmBtn" @tap="confirm" >
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<slot name="confirm" v-if="$slots.confirm" />
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<view v-else class="confirm">确定</view>
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</view>
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</view>
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<slot></slot>
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</view>
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</view>
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</template>
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<script>
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import {
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determineDirection,
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calcImageOffset,
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calcImageScale,
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calcImageSize,
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calcPythagoreanTheorem,
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clipTouchMoveOfCalculate,
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imageTouchMoveOfCalcOffset,
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} from './utils';
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const cache = {}
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export default {
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name: 'lime-clipper',
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props: {
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value: {
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type: Boolean,
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default: true
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},
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// #ifdef MP-WEIXIN
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type: {
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type: String,
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default: '2d'
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},
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// #endif
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customStyle: {
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type: String,
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},
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zIndex: {
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type: Number,
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default: 99
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},
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imageUrl: {
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type: String
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},
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fileType: {
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type: String,
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default: 'png'
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},
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quality: {
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type: Number,
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default: 1
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},
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width: {
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type: Number,
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default: 400
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},
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height: {
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type: Number,
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default: 400
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},
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minWidth: {
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type: Number,
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default: 200
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},
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maxWidth: {
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type: Number,
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default: 600
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},
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destWidth: Number,
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destHeight: Number,
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minHeight: {
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type: Number,
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default: 200
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},
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maxHeight: {
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type: Number,
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default: 600
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},
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isLockWidth: {
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type: Boolean,
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default: false
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},
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isLockHeight: {
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type: Boolean,
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default: false
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},
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isLockRatio: {
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type: Boolean,
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default: true
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},
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scaleRatio: {
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type: Number,
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default: 1
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},
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minRatio: {
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type: Number,
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default: 0.5
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},
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maxRatio: {
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type: Number,
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default: 2
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},
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isDisableScale: {
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type: Boolean,
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default: false
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},
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isDisableRotate: {
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type: Boolean,
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default: false
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},
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isLimitMove: {
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type: Boolean,
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default: false
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},
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isShowPhotoBtn: {
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type: Boolean,
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default: true
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},
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isShowRotateBtn: {
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type: Boolean,
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default: true
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},
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isShowConfirmBtn: {
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type: Boolean,
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default: true
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},
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isShowCancelBtn: {
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type: Boolean,
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default: true
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},
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rotateAngle: {
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type: Number,
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default: 90
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},
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source: {
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type: Object,
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default: () => ({
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album: '从相册中选择',
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camera: '拍照',
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// #ifdef MP-WEIXIN
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message: '从微信中选择'
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// #endif
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})
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}
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},
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data() {
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return {
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canvasWidth: 0,
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canvasHeight: 0,
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clipX: 0,
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clipY: 0,
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clipWidth: 0,
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clipHeight: 0,
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animation: false,
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imageWidth: 0,
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imageHeight: 0,
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imageTop: 0,
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imageLeft: 0,
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scale: 1,
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angle: 0,
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image: '',
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imageInit: false,
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sysinfo: {},
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throttleTimer: null,
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throttleFlag: true,
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timeClipCenter: null,
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flagClipTouch: false,
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flagEndTouch: false,
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clipStart: {},
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animationTimer: null,
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touchRelative: [{x: 0,y: 0}],
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hypotenuseLength: 0,
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ctx: null,
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canvasId: 'lime-clipper'
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};
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},
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computed: {
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// canvasId() {
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// return `l-clipper-${this._ ? this._.uid : this._uid}`
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// },
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clipStyle() {
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const {clipWidth, clipHeight, clipY, clipX, animation} = this
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return `
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width: ${clipWidth}px;
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height:${clipHeight}px;
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transition-property: ${animation ? '' : 'background'};
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left: ${clipX}px;
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top: ${clipY}px
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`
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},
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imageStyle() {
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const {imageWidth, imageHeight, imageLeft, imageTop, animation, scale, angle} = this
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return `
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width: ${imageWidth ? imageWidth + 'px' : 'auto'};
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height: ${imageHeight ? imageHeight + 'px' : 'auto'};
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transform: translate3d(${imageLeft - imageWidth / 2}px, ${imageTop - imageHeight / 2}px, 0) scale(${scale}) rotate(${angle}deg);
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transition-duration: ${animation ? 0.35 : 0}s
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`
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},
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clipSize() {
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const { clipWidth, clipHeight } = this;
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return { clipWidth, clipHeight };
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},
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clipPoint() {
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const { clipY, clipX } = this;
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return { clipY, clipX };
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}
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},
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watch: {
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value(val) {
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if(!val) {
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this.animation = 0
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this.angle = 0
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} else {
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if(this.imageUrl) {
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const {imageWidth, imageHeight, imageLeft, imageTop, scale, clipX, clipY, clipWidth, clipHeight, path} = cache?.[this.imageUrl] || {}
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if(path != this.image) {
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this.image = this.imageUrl;
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} else {
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this.setDiffData({imageWidth, imageHeight, imageLeft, imageTop, scale, clipX, clipY, clipWidth, clipHeight})
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}
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}
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}
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},
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imageUrl(url) {
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this.image = url
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},
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image:{
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handler: async function(url) {
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this.getImageInfo(url)
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},
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// immediate: true,
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},
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clipSize({ widthVal, heightVal }) {
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let { minWidth, minHeight } = this;
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minWidth = minWidth / 2;
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minHeight = minHeight / 2;
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if (widthVal < minWidth) {
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this.setDiffData({clipWidth: minWidth})
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}
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if (heightVal < minHeight) {
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this.setDiffData({clipHeight: minHeight})
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}
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this.calcClipSize();
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},
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angle(val) {
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this.animation = this.imageInit;
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this.moveStop();
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const { isLimitMove } = this;
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if (isLimitMove && val % 90) {
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this.setDiffData({
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angle: Math.round(val / 90) * 90
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})
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}
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this.imgMarginDetectionScale();
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},
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animation(val) {
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clearTimeout(this.animationTimer);
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if (val) {
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let animationTimer = setTimeout(() => {
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this.setDiffData({
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animation: false
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})
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}, 260);
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this.setDiffData({animationTimer})
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this.animationTimer = animationTimer;
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}
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},
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isLimitMove(val) {
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if (val) {
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if (this.angle % 90) {
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this.setDiffData({
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angle : Math.round(this.angle / 90) * 90
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})
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}
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this.imgMarginDetectionScale();
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}
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},
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clipPoint() {
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this.cutDetectionPosition();
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},
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width(width, oWidth) {
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if (width !== oWidth) {
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this.setDiffData({
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clipWidth: uni.upx2px(width) //width / 2
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})
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}
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},
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height(height, oHeight) {
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if (height !== oHeight) {
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this.setDiffData({
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clipHeight: uni.upx2px(height) //height / 2
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})
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}
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}
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},
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mounted() {
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const sysinfo = uni.getSystemInfoSync();
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this.sysinfo = sysinfo;
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this.setClipInfo();
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this.image = this.imageUrl||this.image
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this.setClipCenter();
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this.calcClipSize();
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this.cutDetectionPosition();
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},
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methods: {
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setDiffData(data) {
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Object.keys(data).forEach(key => {
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if (this[key] !== data[key]) {
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this[key] = data[key];
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}
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});
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},
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getImageInfo(url) {
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if (!url) return;
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if(this.value) {
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uni.showLoading({
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title: '请稍候...',
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mask: true
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});
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}
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this.imageInit = false
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uni.getImageInfo({
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src: url,
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success: res => {
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if(['right', 'left'].includes(res.orientation)) {
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this.imgComputeSize(res.height, res.width);
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} else {
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this.imgComputeSize(res.width, res.height);
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}
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this.image = res.path;
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if (this.isLimitMove) {
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this.imgMarginDetectionScale();
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this.$emit('ready', res);
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}
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const {imageWidth, imageHeight, imageLeft, imageTop, scale, clipX, clipY, clipWidth, clipHeight} = this
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cache[url] = Object.assign(res, {imageWidth, imageHeight, imageLeft, imageTop, scale, clipX, clipY, clipWidth, clipHeight});
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},
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fail: (err) => {
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this.imgComputeSize();
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if (this.isLimitMove) {
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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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setClipInfo() {
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const { width, height, sysinfo, canvasId } = this;
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const clipWidth = width / 2;
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const clipHeight = height / 2;
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const clipY = (sysinfo.windowHeight - clipHeight) / 2;
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const clipX = (sysinfo.windowWidth - clipWidth) / 2;
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const imageLeft = sysinfo.windowWidth / 2;
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const imageTop = sysinfo.windowHeight / 2;
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this.ctx = uni.createCanvasContext(canvasId, this);
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this.clipWidth = clipWidth;
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this.clipHeight = clipHeight;
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this.clipX = clipX;
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this.clipY = clipY;
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this.canvasHeight = clipHeight;
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this.canvasWidth = clipWidth;
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this.imageLeft = imageLeft;
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this.imageTop = imageTop;
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},
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setClipCenter() {
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const { sysInfo, clipHeight, clipWidth, imageTop, imageLeft } = this;
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let sys = sysInfo || uni.getSystemInfoSync();
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let clipY = (sys.windowHeight - clipHeight) * 0.5;
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let clipX = (sys.windowWidth - clipWidth) * 0.5;
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this.imageTop = imageTop - this.clipY + clipY;
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this.imageLeft = imageLeft - this.clipX + clipX;
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this.clipY = clipY;
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this.clipX = clipX;
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},
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calcClipSize() {
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const { clipHeight, clipWidth, sysinfo, clipX, clipY } = this;
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if (clipWidth > sysinfo.windowWidth) {
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this.setDiffData({
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clipWidth: sysinfo.windowWidth
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})
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} else if (clipWidth + clipX > sysinfo.windowWidth) {
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this.setDiffData({
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clipX: sysinfo.windowWidth - clipX
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})
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}
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if (clipHeight > sysinfo.windowHeight) {
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this.setDiffData({
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clipHeight: sysinfo.windowHeight
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})
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} else if (clipHeight + clipY > sysinfo.windowHeight) {
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this.clipY = sysinfo.windowHeight - clipY;
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this.setDiffData({
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clipY: sysinfo.windowHeight - clipY
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})
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}
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},
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cutDetectionPosition() {
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const { clipX, clipY, sysinfo, clipHeight, clipWidth } = this;
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let cutDetectionPositionTop = () => {
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if (clipY < 0) {
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this.setDiffData({clipY: 0})
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}
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if (clipY > sysinfo.windowHeight - clipHeight) {
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this.setDiffData({clipY: sysinfo.windowHeight - clipHeight})
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}
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},
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cutDetectionPositionLeft = () => {
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if (clipX < 0) {
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this.setDiffData({clipX: 0})
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}
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if (clipX > sysinfo.windowWidth - clipWidth) {
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this.setDiffData({clipX: sysinfo.windowWidth - clipWidth})
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}
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};
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if (clipY === null && clipX === null) {
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let newClipY = (sysinfo.windowHeight - clipHeight) * 0.5;
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let newClipX = (sysinfo.windowWidth - clipWidth) * 0.5;
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this.setDiffData({
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clipX: newClipX,
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clipY: newClipY
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})
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} else if (clipY !== null && clipX !== null) {
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cutDetectionPositionTop();
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cutDetectionPositionLeft();
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} else if (clipY !== null && clipX === null) {
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cutDetectionPositionTop();
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this.setDiffData({
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clipX: (sysinfo.windowWidth - clipWidth) / 2
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})
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} else if (clipY === null && clipX !== null) {
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cutDetectionPositionLeft();
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this.setDiffData({
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clipY: (sysinfo.windowHeight - clipHeight) / 2
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})
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}
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},
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imgComputeSize(width, height) {
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const { imageWidth, imageHeight } = calcImageSize(width, height, this);
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this.imageWidth = imageWidth;
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this.imageHeight = imageHeight;
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},
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imgMarginDetectionScale(scale) {
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if (!this.isLimitMove) return;
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const currentScale = calcImageScale(this, scale);
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this.imgMarginDetectionPosition(currentScale);
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},
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imgMarginDetectionPosition(scale) {
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if (!this.isLimitMove) return;
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const { scale: currentScale, left, top } = calcImageOffset(this, scale);
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this.setDiffData({
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imageLeft: left,
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imageTop: top,
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scale: currentScale
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})
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},
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throttle() {
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this.setDiffData({
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throttleFlag: true
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})
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},
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moveDuring() {
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clearTimeout(this.timeClipCenter);
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},
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moveStop() {
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clearTimeout(this.timeClipCenter);
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const timeClipCenter = setTimeout(() => {
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if (!this.animation) {
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this.setDiffData({
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imageInit: true,
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animation: true,
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})
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}
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this.setClipCenter();
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}, 800);
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this.setDiffData({timeClipCenter})
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},
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clipTouchStart(event) {
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// #ifdef H5
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event.preventDefault()
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// #endif
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if (!this.image) {
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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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const currentX = event.touches[0].clientX;
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const currentY = event.touches[0].clientY;
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const { clipX, clipY, clipWidth, clipHeight } = this;
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const corner = determineDirection(clipX, clipY, clipWidth, clipHeight, currentX, currentY);
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this.moveDuring();
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if(!corner) {return}
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this.clipStart = {
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width: clipWidth,
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height: clipHeight,
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x: currentX,
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y: currentY,
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clipY,
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clipX,
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corner
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};
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this.flagClipTouch = true;
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this.flagEndTouch = true;
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},
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clipTouchMove(event) {
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// #ifdef H5
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event.stopPropagation()
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event.preventDefault()
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// #endif
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if (!this.image) {
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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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// 只针对单指点击做处理
|
|
if (event.touches.length !== 1) {
|
|
return;
|
|
|
|
}
|
|
const { flagClipTouch, throttleFlag } = this;
|
|
if (flagClipTouch && throttleFlag) {
|
|
const { isLockRatio, isLockHeight, isLockWidth } = this;
|
|
if (isLockRatio && (isLockWidth || isLockHeight)) return;
|
|
this.setDiffData({
|
|
throttleFlag: false
|
|
})
|
|
this.throttle();
|
|
const clipData = clipTouchMoveOfCalculate(this, event);
|
|
if(clipData) {
|
|
const { width, height, clipX, clipY } = clipData;
|
|
if (!isLockWidth && !isLockHeight) {
|
|
this.setDiffData({
|
|
clipWidth: width,
|
|
clipHeight: height,
|
|
clipX,
|
|
clipY
|
|
})
|
|
} else if (!isLockWidth) {
|
|
this.setDiffData({
|
|
clipWidth: width,
|
|
clipX
|
|
})
|
|
} else if (!isLockHeight) {
|
|
this.setDiffData({
|
|
clipHeight: height,
|
|
clipY
|
|
})
|
|
}
|
|
this.imgMarginDetectionScale();
|
|
}
|
|
|
|
}
|
|
},
|
|
clipTouchEnd() {
|
|
this.moveStop();
|
|
this.flagClipTouch = false;
|
|
},
|
|
imageTouchStart(e) {
|
|
// #ifdef H5
|
|
event.preventDefault()
|
|
// #endif
|
|
this.flagEndTouch = false;
|
|
const { imageLeft, imageTop } = this;
|
|
const clientXForLeft = e.touches[0].clientX;
|
|
const clientYForLeft = e.touches[0].clientY;
|
|
|
|
let touchRelative = [];
|
|
if (e.touches.length === 1) {
|
|
touchRelative[0] = {
|
|
x: clientXForLeft - imageLeft,
|
|
y: clientYForLeft - imageTop
|
|
};
|
|
this.touchRelative = touchRelative;
|
|
} else {
|
|
const clientXForRight = e.touches[1].clientX;
|
|
const clientYForRight = e.touches[1].clientY;
|
|
let width = Math.abs(clientXForLeft - clientXForRight);
|
|
let height = Math.abs(clientYForLeft - clientYForRight);
|
|
const hypotenuseLength = calcPythagoreanTheorem(width, height);
|
|
|
|
touchRelative = [
|
|
{
|
|
x: clientXForLeft - imageLeft,
|
|
y: clientYForLeft - imageTop
|
|
},
|
|
{
|
|
x: clientXForRight - imageLeft,
|
|
y: clientYForRight - imageTop
|
|
}
|
|
];
|
|
this.touchRelative = touchRelative;
|
|
this.hypotenuseLength = hypotenuseLength;
|
|
}
|
|
},
|
|
imageTouchMove(e) {
|
|
// #ifdef H5
|
|
event.preventDefault()
|
|
// #endif
|
|
const { flagEndTouch, throttleFlag } = this;
|
|
if (flagEndTouch || !throttleFlag) return;
|
|
const clientXForLeft = e.touches[0].clientX;
|
|
const clientYForLeft = e.touches[0].clientY;
|
|
this.setDiffData({throttleFlag: false})
|
|
this.throttle();
|
|
this.moveDuring();
|
|
if (e.touches.length === 1) {
|
|
const { left: imageLeft, top: imageTop} = imageTouchMoveOfCalcOffset(this, clientXForLeft, clientYForLeft);
|
|
this.setDiffData({
|
|
imageLeft,
|
|
imageTop
|
|
})
|
|
this.imgMarginDetectionPosition();
|
|
} else {
|
|
const clientXForRight = e.touches[1].clientX;
|
|
const clientYForRight = e.touches[1].clientY;
|
|
let width = Math.abs(clientXForLeft - clientXForRight),
|
|
height = Math.abs(clientYForLeft - clientYForRight),
|
|
hypotenuse = calcPythagoreanTheorem(width, height),
|
|
scale = this.scale * (hypotenuse / this.hypotenuseLength);
|
|
if (this.isDisableScale) {
|
|
|
|
scale = 1;
|
|
} else {
|
|
scale = scale <= this.minRatio ? this.minRatio : scale;
|
|
scale = scale >= this.maxRatio ? this.maxRatio : scale;
|
|
this.$emit('change', {
|
|
width: this.imageWidth * scale,
|
|
height: this.imageHeight * scale
|
|
});
|
|
}
|
|
|
|
this.imgMarginDetectionScale(scale);
|
|
this.hypotenuseLength = Math.sqrt(Math.pow(width, 2) + Math.pow(height, 2));
|
|
this.scale = scale;
|
|
}
|
|
},
|
|
imageTouchEnd() {
|
|
this.setDiffData({
|
|
flagEndTouch: true
|
|
})
|
|
this.moveStop();
|
|
},
|
|
uploadImage() {
|
|
const itemList = Object.entries(this.source)
|
|
const sizeType = ['original', 'compressed']
|
|
const success = ({tempFilePaths:a, tempFiles: b}) => {
|
|
this.image = a ? a[0] : b[0].path
|
|
};
|
|
const _uploadImage = (type) => {
|
|
if(type !== 'message') {
|
|
uni.chooseImage({
|
|
count: 1,
|
|
sizeType,
|
|
sourceType: [type],
|
|
success
|
|
});
|
|
}
|
|
// #ifdef MP-WEIXIN
|
|
if(type == 'message') {
|
|
wx.chooseMessageFile({
|
|
count: 1,
|
|
type: 'image',
|
|
success
|
|
})
|
|
}
|
|
// #endif
|
|
}
|
|
if(itemList.length > 1) {
|
|
uni.showActionSheet({
|
|
itemList: itemList.map(v => v[1]),
|
|
success: ({tapIndex: i}) => {
|
|
_uploadImage(itemList[i][0])
|
|
}
|
|
})
|
|
} else {
|
|
_uploadImage(itemList[0][0])
|
|
}
|
|
},
|
|
imageReset() {
|
|
const sys = this.sysinfo || uni.getSystemInfoSync();
|
|
this.moveStop()
|
|
this.scale = 1;
|
|
this.angle = 0;
|
|
|
|
this.imageTop = sys.windowHeight / 2;
|
|
this.imageLeft = sys.windowWidth / 2;
|
|
},
|
|
imageLoad(e) {
|
|
this.imageReset();
|
|
uni.hideLoading();
|
|
this.$emit('ready', e.detail);
|
|
},
|
|
rotate(event) {
|
|
if (this.isDisableRotate) return;
|
|
if (!this.image) {
|
|
uni.showToast({
|
|
title: '请选择图片',
|
|
icon: 'none'
|
|
});
|
|
return;
|
|
}
|
|
const { rotateAngle } = this;
|
|
const originAngle = this.angle
|
|
const type = event.currentTarget.dataset.type;
|
|
if (type === 'along') {
|
|
this.angle = originAngle + rotateAngle
|
|
} else {
|
|
this.angle = originAngle - rotateAngle
|
|
}
|
|
this.$emit('rotate', this.angle);
|
|
},
|
|
confirm() {
|
|
if (!this.image) {
|
|
uni.showToast({
|
|
title: '请选择图片',
|
|
icon: 'none'
|
|
});
|
|
return;
|
|
}
|
|
uni.showLoading({
|
|
title: '加载中'
|
|
});
|
|
const { canvasHeight, canvasWidth, clipHeight, clipWidth, scale, ctx, imageLeft, imageTop, clipX, clipY, angle, scaleRatio: dpr, image, quality, fileType, type: imageType, canvasId } = this;
|
|
const draw = () => {
|
|
const imageWidth = this.imageWidth * scale * dpr;
|
|
const imageHeight = this.imageHeight * scale * dpr;
|
|
const xpos = imageLeft - clipX;
|
|
const ypos = imageTop - clipY;
|
|
// const ctx = uni.createCanvasContext(canvasId, this);
|
|
ctx.translate(xpos * dpr, ypos * dpr);
|
|
ctx.rotate((angle * Math.PI) / 180);
|
|
ctx.drawImage(image, -imageWidth / 2, -imageHeight / 2, imageWidth, imageHeight);
|
|
ctx.draw(false, () => {
|
|
const width = clipWidth * dpr
|
|
const height = clipHeight * dpr
|
|
let params = {
|
|
x: 0,
|
|
y: 0,
|
|
width,
|
|
height,
|
|
destWidth: this.destWidth || width,
|
|
destHeight: this.destHeight || height,
|
|
canvasId,
|
|
fileType,
|
|
quality,
|
|
success: (res) => {
|
|
// 钉钉小程序
|
|
data.url = res.tempFilePath || res.filePath;
|
|
uni.hideLoading();
|
|
this.$emit('success', data);
|
|
this.$emit('input', false)
|
|
},
|
|
fail: (error) => {
|
|
console.error('error', error)
|
|
this.$emit('fail', error);
|
|
this.$emit('input', false)
|
|
}
|
|
};
|
|
|
|
let data = {
|
|
url: '',
|
|
width,
|
|
height
|
|
};
|
|
uni.canvasToTempFilePath(params, this)
|
|
});
|
|
|
|
};
|
|
|
|
if (canvasWidth !== clipWidth || canvasHeight !== clipHeight) {
|
|
this.canvasWidth = clipWidth;
|
|
this.canvasHeight = clipHeight;
|
|
ctx.draw();
|
|
this.$nextTick(() => {
|
|
setTimeout(() => {
|
|
draw();
|
|
}, 100);
|
|
})
|
|
} else {
|
|
draw();
|
|
}
|
|
},
|
|
cancel() {
|
|
this.$emit('cancel', false)
|
|
this.$emit('input', false)
|
|
},
|
|
}
|
|
};
|
|
</script>
|
|
|
|
<style lang="scss" scoped>
|
|
@import './index';
|
|
</style>
|