2023-12-05 16:45:28 +08:00
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<template>
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<view class="lime-echart" :style="customStyle" v-if="canvasId" ref="limeEchart" :aria-label="ariaLabel">
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<!-- #ifndef APP-NVUE -->
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<canvas
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class="lime-echart__canvas"
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v-if="use2dCanvas"
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type="2d"
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:id="canvasId"
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:style="canvasStyle"
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:disable-scroll="isDisableScroll"
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@touchstart="touchStart"
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@touchmove="touchMove"
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@touchend="touchEnd"
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/>
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<!-- <canvas
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class="lime-echart__canvas"
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v-else-if="isPC"
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:style="canvasStyle"
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:id="canvasId"
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:canvas-id="canvasId"
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:disable-scroll="isDisableScroll"
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@mousedown="touchStart"
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@mousemove="touchMove"
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@mouseup="touchEnd"
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/> -->
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<canvas
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class="lime-echart__canvas"
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v-else
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:width="nodeWidth"
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:height="nodeHeight"
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:style="canvasStyle"
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:canvas-id="canvasId"
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:id="canvasId"
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:disable-scroll="isDisableScroll"
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@touchstart="touchStart"
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@touchmove="touchMove"
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@touchend="touchEnd"
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/>
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<view class="lime-echart__mask"
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v-if="isPC"
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@mousedown="touchStart"
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@mousemove="touchMove"
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@mouseup="touchEnd"
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@touchstart="touchStart"
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@touchmove="touchMove"
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@touchend="touchEnd">
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</view>
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<canvas v-if="isOffscreenCanvas" :style="offscreenStyle" :canvas-id="offscreenCanvasId"></canvas>
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<!-- #endif -->
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<!-- #ifdef APP-NVUE -->
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<web-view
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class="lime-echart__canvas"
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:id="canvasId"
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:style="canvasStyle"
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:webview-styles="webviewStyles"
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ref="webview"
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2024-01-24 11:55:35 +08:00
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src="/uni_modules/lime-echart/static/nvue.html?v=1"
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2023-12-05 16:45:28 +08:00
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@pagefinish="finished = true"
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@onPostMessage="onMessage"
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></web-view>
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<!-- #endif -->
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</view>
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</template>
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<script>
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// #ifdef VUE3
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// #ifdef APP-PLUS
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global = {}
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// #endif
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// #endif
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// #ifndef APP-NVUE
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import {Canvas, setCanvasCreator, dispatch} from './canvas';
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import {wrapTouch, convertTouchesToArray, devicePixelRatio ,sleep, canIUseCanvas2d, getRect} from './utils';
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// #endif
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// #ifdef APP-NVUE
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import { base64ToPath, sleep } from './utils';
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import {Echarts} from './nvue'
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// #endif
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const charts = {}
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const echartsObj = {}
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export default {
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name: 'lime-echart',
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props: {
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// #ifdef MP-WEIXIN || MP-TOUTIAO
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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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// #ifdef APP-NVUE
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webviewStyles: Object,
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// hybrid: Boolean,
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// #endif
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customStyle: String,
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isDisableScroll: Boolean,
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isClickable: {
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type: Boolean,
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default: true
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},
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enableHover: Boolean,
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beforeDelay: {
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type: Number,
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default: 30
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}
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},
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data() {
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return {
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// #ifdef MP-WEIXIN || MP-TOUTIAO || MP-ALIPAY
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use2dCanvas: true,
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// #endif
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// #ifndef MP-WEIXIN || MP-TOUTIAO || MP-ALIPAY
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use2dCanvas: false,
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// #endif
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ariaLabel: '图表',
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width: null,
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height: null,
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nodeWidth: null,
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nodeHeight: null,
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// canvasNode: null,
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config: {},
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inited: false,
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finished: false,
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file: '',
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platform: '',
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isPC: false,
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isDown: false,
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isOffscreenCanvas: false,
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offscreenWidth: 0,
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offscreenHeight: 0
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};
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},
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computed: {
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canvasId() {
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return `lime-echart${this._ && this._.uid || this._uid}`
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},
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offscreenCanvasId() {
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return `${this.canvasId}_offscreen`
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},
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offscreenStyle() {
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return `width:${this.offscreenWidth}px;height: ${this.offscreenHeight}px; position: fixed; left: 99999px; background: red`
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},
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canvasStyle() {
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return this.width && this.height ? ('width:' + this.width + 'px;height:' + this.height + 'px') : ''
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}
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},
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// #ifndef VUE3
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beforeDestroy() {
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this.clear()
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this.dispose()
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// #ifdef H5
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if(this.isPC) {
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document.removeEventListener('mousewheel', this.mousewheel)
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}
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// #endif
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},
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// #endif
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// #ifdef VUE3
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unmounted() {
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this.clear()
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this.dispose()
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// #ifdef H5
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if(this.isPC) {
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document.removeEventListener('mousewheel', this.mousewheel)
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}
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// #endif
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},
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// #endif
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created() {
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// #ifdef H5
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if(!('ontouchstart' in window)) {
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this.isPC = true
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document.addEventListener('mousewheel', this.mousewheel)
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}
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// #endif
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// #ifdef MP-WEIXIN || MP-TOUTIAO || MP-ALIPAY
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const { platform } = uni.getSystemInfoSync();
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this.isPC = /windows/i.test(platform)
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// #endif
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this.use2dCanvas = this.type === '2d' && canIUseCanvas2d()
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},
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mounted() {
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this.$nextTick(() => {
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this.$emit('finished')
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})
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},
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methods: {
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// #ifdef APP-NVUE
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onMessage(e) {
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const res = e?.detail?.data[0] || null;
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2024-01-24 11:55:35 +08:00
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if (res?.event) {
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const data = JSON.parse(res.data)
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2023-12-05 16:45:28 +08:00
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if(res.event === 'inited') {
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this.inited = true
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2024-01-24 11:55:35 +08:00
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} else if(res.event.startsWith('@')){
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this.chart.dispatchAction(res.event.split('@')[1], data.options)
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2023-12-05 16:45:28 +08:00
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}
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2024-01-24 11:55:35 +08:00
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this.$emit(res.event, data);
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2023-12-05 16:45:28 +08:00
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} else if(res?.file){
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this.file = res.data
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} else if(!res[0] && JSON.stringify(res[0]) != '{}'){
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console.error(res);
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} else {
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console.log(...res)
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}
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},
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// #endif
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setChart(callback) {
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if(!this.chart) {
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console.warn(`组件还未初始化，请先使用 init`)
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return
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}
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if(typeof callback === 'function' && this.chart) {
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callback(this.chart);
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}
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// #ifdef APP-NVUE
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if(typeof callback === 'function') {
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this.$refs.webview.evalJs(`setChart(${JSON.stringify(callback.toString())}, ${JSON.stringify(this.chart.options)})`);
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}
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// #endif
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},
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setOption() {
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if (!this.chart || !this.chart.setOption) {
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console.warn(`组件还未初始化，请先使用 init`)
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return
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}
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this.chart.setOption(...arguments);
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},
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showLoading() {
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if(this.chart) {
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this.chart.showLoading(...arguments)
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}
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},
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hideLoading() {
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if(this.chart) {
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this.chart.hideLoading()
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}
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},
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clear() {
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if(this.chart) {
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this.chart.clear()
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}
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},
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dispose() {
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if(this.chart) {
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this.chart.dispose()
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}
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},
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resize(size) {
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if(size && size.width && size.height) {
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this.height = size.height
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this.width = size.width
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if(this.chart) {this.chart.resize(size)}
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} else {
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this.$nextTick(() => {
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uni.createSelectorQuery()
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.in(this)
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.select(`.lime-echart`)
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.boundingClientRect()
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.exec(res => {
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if (res) {
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let { width, height } = res[0];
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this.width = width = width || 300;
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this.height = height = height || 300;
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this.chart.resize({width, height})
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}
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});
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})
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}
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},
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canvasToTempFilePath(args = {}) {
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// #ifndef APP-NVUE
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const { use2dCanvas, canvasId } = this;
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return new Promise((resolve, reject) => {
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const copyArgs = Object.assign({
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canvasId,
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success: resolve,
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fail: reject
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}, args);
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if (use2dCanvas) {
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delete copyArgs.canvasId;
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copyArgs.canvas = this.canvasNode;
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}
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uni.canvasToTempFilePath(copyArgs, this);
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});
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// #endif
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// #ifdef APP-NVUE
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this.file = ''
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this.$refs.webview.evalJs(`canvasToTempFilePath()`);
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return new Promise((resolve, reject) => {
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this.$watch('file', async (file) => {
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if(file) {
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const tempFilePath = await base64ToPath(file)
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resolve(args.success({tempFilePath}))
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} else {
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reject(args.fail({error: ``}))
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}
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})
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})
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// #endif
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},
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async init(echarts, ...args) {
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// #ifndef APP-NVUE
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if(arguments && arguments.length < 1) {
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console.error('缺少参数：init(echarts, theme?:string, opts?: object, callback?: function)')
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return
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}
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// #endif
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let theme=null,opts={},callback;
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Array.from(arguments).forEach(item => {
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if(typeof item === 'function') {
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callback = item
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}
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if(['string'].includes(typeof item)) {
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theme = item
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}
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if(typeof item === 'object') {
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opts = item
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}
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})
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if(this.beforeDelay) {
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await sleep(this.beforeDelay)
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}
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let config = await this.getContext();
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// #ifndef APP-NVUE
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setCanvasCreator(echarts, config)
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this.chart = echarts.init(config.canvas, theme, Object.assign({}, config, opts))
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if(typeof callback === 'function') {
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callback(this.chart)
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} else {
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return this.chart
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}
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// #endif
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// #ifdef APP-NVUE
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this.chart = new Echarts(this.$refs.webview)
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this.$refs.webview.evalJs(`init(null, null, ${JSON.stringify(opts)}, ${theme})`)
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if(callback) {
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callback(this.chart)
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} else {
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return this.chart
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}
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// #endif
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},
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getContext() {
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// #ifdef APP-NVUE
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if(this.finished) {
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return Promise.resolve(this.finished)
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}
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return new Promise(resolve => {
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this.$watch('finished', (val) => {
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if(val) {
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resolve(this.finished)
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}
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})
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})
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// #endif
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// #ifndef APP-NVUE
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return getRect(`#${this.canvasId}`, {context: this, type: this.use2dCanvas ? 'fields': 'boundingClientRect'}).then(res => {
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if(res) {
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let dpr = devicePixelRatio
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let {width, height, node} = res
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let canvas;
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this.width = width = width || 300;
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this.height = height = height || 300;
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if(node) {
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const ctx = node.getContext('2d');
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canvas = new Canvas(ctx, this, true, node);
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this.canvasNode = node
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} else {
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// #ifdef MP-TOUTIAO
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dpr = !this.isPC ? devicePixelRatio : 1// 1.25
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// #endif
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// #ifndef MP-ALIPAY || MP-TOUTIAO
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dpr = this.isPC ? devicePixelRatio : 1
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// #endif
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// #ifdef MP-ALIPAY || MP-LARK
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dpr = devicePixelRatio
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// #endif
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this.rect = res
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this.nodeWidth = width * dpr;
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this.nodeHeight = height * dpr;
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const ctx = uni.createCanvasContext(this.canvasId, this);
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canvas = new Canvas(ctx, this, false);
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}
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return { canvas, width, height, devicePixelRatio: dpr, node };
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} else {
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return {}
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}
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})
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// #endif
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},
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// #ifndef APP-NVUE
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getRelative(e, touches) {
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let { clientX, clientY } = e
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if(!(clientX && clientY) && touches && touches[0]) {
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clientX = touches[0].clientX
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clientY = touches[0].clientY
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}
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return {x: clientX - this.rect.left, y: clientY - this.rect.top, wheelDelta: e.wheelDelta || 0}
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},
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getTouch(e, touches) {
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const {x} = touches && touches[0] || {}
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return x ? touches[0] : this.getRelative(e, touches);
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},
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touchStart(e) {
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this.isDown = true
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const next = () => {
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const touches = convertTouchesToArray(e.touches)
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if(this.chart) {
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const touch = this.getTouch(e, touches)
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this.startX = touch.x
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this.startY = touch.y
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this.startT = new Date()
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const handler = this.chart.getZr().handler;
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dispatch.call(handler, 'mousedown', touch)
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dispatch.call(handler, 'mousemove', touch)
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handler.processGesture(wrapTouch(e), 'start');
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clearTimeout(this.endTimer);
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}
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}
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if(this.isPC) {
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getRect(`#${this.canvasId}`, {context: this}).then(res => {
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this.rect = res
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next()
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})
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return
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}
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next()
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},
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touchMove(e) {
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if(this.isPC && this.enableHover && !this.isDown) {this.isDown = true}
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const touches = convertTouchesToArray(e.touches)
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if (this.chart && this.isDown) {
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const handler = this.chart.getZr().handler;
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dispatch.call(handler, 'mousemove', this.getTouch(e, touches))
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handler.processGesture(wrapTouch(e), 'change');
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}
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},
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touchEnd(e) {
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this.isDown = false
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if (this.chart) {
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const touches = convertTouchesToArray(e.changedTouches)
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const {x} = touches && touches[0] || {}
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const touch = (x ? touches[0] : this.getRelative(e, touches)) || {};
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const handler = this.chart.getZr().handler;
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const isClick = Math.abs(touch.x - this.startX) < 10 && new Date() - this.startT < 200;
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dispatch.call(handler, 'mouseup', touch)
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handler.processGesture(wrapTouch(e), 'end');
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if(isClick) {
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dispatch.call(handler, 'click', touch)
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} else {
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this.endTimer = setTimeout(() => {
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dispatch.call(handler, 'mousemove', {x: 999999999,y: 999999999});
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dispatch.call(handler, 'mouseup', {x: 999999999,y: 999999999});
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},50)
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}
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}
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},
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// #endif
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// #ifdef H5
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mousewheel(e){
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if(this.chart) {
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dispatch.call(this.chart.getZr().handler, 'mousewheel', this.getTouch(e))
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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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</script>
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<style>
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.lime-echart {
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position: relative;
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/* #ifndef APP-NVUE */
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width: 100%;
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height: 100%;
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/* #endif */
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/* #ifdef APP-NVUE */
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flex: 1;
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/* #endif */
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}
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.lime-echart__canvas {
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/* #ifndef APP-NVUE */
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width: 100%;
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height: 100%;
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/* #endif */
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/* #ifdef APP-NVUE */
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flex: 1;
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/* #endif */
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}
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/* #ifndef APP-NVUE */
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.lime-echart__mask {
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position: absolute;
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width: 100%;
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height: 100%;
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left: 0;
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top: 0;
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z-index: 1;
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}
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/* #endif */
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</style>
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