cxc-szcx-uniapp/uni_modules/lime-echart/components/l-echart/l-echart.uvue

<template>
	<!-- #ifdef APP -->
	<web-view class="lime-echart" ref="chartRef" @load="loaded" :style="[customStyle]" 
		:webview-styles="[webviewStyles]" src="/uni_modules/lime-echart/static/uvue.html?v=10112">
	</web-view>
	<!-- #endif -->
	<!-- #ifdef H5 -->
	<div class="lime-echart" ref="chartRef"></div>
	<!-- #endif -->
	<!-- #ifndef H5 || APP-->
	<canvas class="lime-echart" :id="canvasid" :canvas-id="canvasid" 
		@touchstart="touchstart"
		@touchmove="touchmove"
		@touchend="touchend">
	</canvas>
	<!-- #endif -->
</template>

<script lang="uts" setup>
	// @ts-nocheck
	import { getCurrentInstance, nextTick } from "vue";
	import { Echarts } from './uvue';
	// #ifdef WEB
	import { dispatch } from './canvas';
	// #endif
	// #ifndef APP || WEB
	import {Canvas, setCanvasCreator, dispatch} from './canvas';
	import {wrapTouch, convertTouchesToArray, devicePixelRatio ,sleep, canIUseCanvas2d, getRect} from './utils';
	// #endif
	type EchartsResolve = (value : Echarts) => void
	defineOptions({
		name: 'l-echart'
	})
	const emits = defineEmits(['finished'])
	const props = defineProps({
		// #ifdef APP
		webviewStyles: {
			type: Object
		},
		customStyle: {
			type: Object
		},
		// #endif
		// #ifndef APP
		webviewStyles: {
			type: Object
		},
		customStyle: {
			type: [String, Object]
		},
		// #endif
		isDisableScroll: {
			type: Boolean,
			default: false
		},
		isClickable: {
			type: Boolean,
			default: true
		},
		enableHover: {
			type: Boolean,
			default: false
		},
		beforeDelay: {
			type: Number,
			default: 30
		}
	})
	const instance = getCurrentInstance()!;
	const canvasid = `lime-echart-${instance.uid}`
	const finished = ref(false)
	const map = [] as EchartsResolve[]
	const callbackMap = [] as EchartsResolve[]
	// let context = null as UniWebViewElement | null
	let chart = null as Echarts | null
	let chartRef = ref<UniWebViewElement | null>(null)
	
	const trigger = () => {
		// #ifdef APP
		if (finished.value) {
			if (chart == null) {
				chart = new Echarts(chartRef.value!)
			}
			while (map.length > 0) {
				const resolve = map.pop() as EchartsResolve
				resolve(chart!)
			}
		}
		// #endif
		// #ifndef APP
		while (map.length > 0) {
			if(chart != null){
				const resolve = map.pop() as EchartsResolve
				resolve(chart!)
			}
		}
		// #endif
		
		if(chart != null){
			while(callbackMap.length > 0){
				const callback = callbackMap.pop() as EchartsResolve
				callback(chart!)
			}
		}
	}
	
	// #ifdef APP
	const loaded = (event : UniWebViewLoadEvent) => {
		event.stopPropagation()
		event.preventDefault()
		finished.value = true
		trigger()
		emits('finished')
	}
	// #endif
	
	
	const _next = () : boolean => {
		if (chart == null) {
			console.warn(`组件还未初始化，请先使用 init`)
			return true
		}
		return false
	}
	const setOption = (option : UTSJSONObject) => {
		if (_next()) return
		chart!.setOption(option);
	}
	const showLoading = () => {
		if (_next()) return
		chart!.showLoading();
	}
	const hideLoading = () => {
		if (_next()) return
		chart!.hideLoading();
	}
	const clear = () => {
		if (_next()) return
		chart!.clear();
	}
	const dispose = () => {
		if (_next()) return
		chart!.dispose();
	}
	const resize = (size : UTSJSONObject) => {
		if (_next()) return
		chart!.resize(size);
	}
	const canvasToTempFilePath = (opt : UTSJSONObject) => {
		if (_next()) return
		chart!.canvasToTempFilePath(opt);
	}
	
	// #ifdef APP
	function init(callback : ((chart : Echarts) => void) | null) : Promise<Echarts> {

		if(callback!=null){
			callbackMap.push(callback)
		}
		return new Promise<Echarts>((resolve) => {
			map.push(resolve)
			trigger()
		})
	}
	// #endif
	// #ifndef APP 
	// #ifndef WEB 
	let use2dCanvas = canIUseCanvas2d()
	const getContext = async () =>{
		return getRect(`#${canvasid}`, {context: instance.proxy!, type: use2dCanvas ? 'fields': 'boundingClientRect'}).then(res => {
			if(res) {
				let dpr = uni.getWindowInfo().pixelRatio
				let {width, height, node} = res
				let canvas;
				if(node) {
					const ctx = node.getContext('2d');
					canvas = new Canvas(ctx, instance.proxy, true, node);
				} else {
					const ctx = uni.createCanvasContext(canvasid, instance.proxy);
					canvas =  new Canvas(ctx, instance.proxy, false);
				}
				
				return { canvas, width, height, devicePixelRatio: dpr, node };
			} else {
				return {}
			}
		})
	}
	// #endif
	const getTouch = (e) => {
		const touches = e.touches[0]
		// #ifdef WEB
		const rect = chart!.getZr().dom.getBoundingClientRect();
		const touch = {
			x: touches.clientX - rect.left,
			y: touches.clientY - rect.top
		}
		// #endif
		// #ifndef WEB
		const touch = {
			x: touches.x,
			y: touches.y
		}
		// #endif
		return touch
	}
	const touchstart = (e) => {
		if(chart == null) return
		const handler = chart.getZr().handler;
		const touch = getTouch(e)
		dispatch.call(handler, 'mousedown', touch)
		dispatch.call(handler, 'click', touch)
	}
	const touchmove = (e) => {
		if(chart == null) return
		const handler = chart.getZr().handler;
		const touch = getTouch(e)
		dispatch.call(handler, 'mousemove', touch)
		// const rect = chart.getZr().dom.getBoundingClientRect()
		// handler.dispatch('mousemove', {
		// 	zrX: e.touches[0].clientX - rect.left,
		// 	zrY: e.touches[0].clientY - rect.top
		// })
	}
	const touchend = (e) => {
		if(chart == null) return
		const handler = chart.getZr().handler;
		
		const touch = {
			x: 999999999,
			y: 999999999
		}
		
		dispatch.call(handler, 'mousemove', touch)
		dispatch.call(handler, 'touchend', touch)
		
	}
	async function init(echarts: any, ...args: any[]): Promise<Echarts>{
		if(echarts == null){
			console.error('请确保已经引入了 ECharts 库');
			return Promise.reject('请确保已经引入了 ECharts 库');
		}
		let theme:string|null=null
		let opts={}
		let callback:Function|null=null;
		
		args.forEach(item =>{
			if(typeof item === 'function') {
				callback = item
			} else if(['string'].includes(typeof item)){
				theme = item
			} else if(typeof item === 'object'){
				opts = item
			}
		})
		
		// #ifdef WEB
		chart = echarts.init(chartRef.value, theme, opts)
		window.addEventListener('touchstart', touchstart)
		window.addEventListener('touchmove', touchmove)
		window.addEventListener('touchend', touchend)
		// #endif
		
		// #ifndef WEB
		let config = await getContext();
		setCanvasCreator(echarts, config)
		chart = echarts.init(config.canvas, theme, Object.assign({}, config, opts))
		// #endif
		console.log('chart', chart)
		if(callback!=null && typeof callback == 'function'){
			callbackMap.push(callback)
		}
		return new Promise<Echarts>((resolve) => {
			map.push(resolve)
			trigger()
		})
	}
	onMounted(()=>{
		nextTick(()=>{
			finished.value = true
			trigger()
			emits('finished')
		})
	})
	onUnmounted(()=>{
		// #ifdef WEB
		window.removeEventListener('touchstart', touchstart)
		window.removeEventListener('touchmove', touchmove)
		window.removeEventListener('touchend', touchend)
		// #endif
	})
	// #endif
	
	defineExpose({
		init,
		setOption,
		showLoading,
		hideLoading,
		clear,
		dispose,
		resize,
		canvasToTempFilePath
	})
</script>
<style lang="scss">
	.lime-echart {
		flex: 1;
		width: 100%;
	}
</style>