<template>
	<view class="content">
		<view @click="echarts.onClick" :change:prop="echarts.updateEcharts" id="echarts" class="echarts">
		</view>

	</view>
</template>


<script>
	import echarts from 'static/echarts.min.js'

	var abcolor = new echarts.graphic.LinearGradient(
		0, 1, 1, 0, [{
				offset: 0,
				color: '#FF1F48',
			},
			{
				offset: .4,
				color: '#D6FF1F',
			},
			{
				offset: 1,
				color: '#1FFBFF',
			}
		]
	)
	export default {
		name: 'chart',
		props: {
			bindData: {
				type: Object,
				default: ''
			}
		},
		data() {
			return {
				option: {
					series: [{
						type: 'gauge',

						axisLabel: {
							distance: -12 //aa 数字位置
						},
						//半径
						radius: '95%',
						detail: {
							formatter: '{value}%',
							color: '#FFC600',
							fontSize: 30,
							fontFamily: 'IMPACT',
							fontWeight: 'normal',
							offsetCenter: [0, '70%']
						},
						data: [{
							value: parseInt(this.bindData.completion),
							// value: '30',
							name: '任务完成率'
						}],

						//起始角度 （aa弧度）
						startAngle: 220,
						endAngle: -40,

						center: ['50%', '50%'], //中心位置
						pointer: {
							show: true,
							length: '70%', //指针长度
						},
						title: {
							offsetCenter: [0, '40%'], //aa文字位置
							fontSize: 14,
							color: '#444'
						},
						min: 0,
						max: 100,
						splitNumber: 10,
						//分隔线样式。
						splitLine: {
							show: false,
						},


						axisLine: {
							show: true,
							lineStyle: {
								width: 14,
								color: [
									[1, abcolor]
								]

							}
						},


					}]
				}


			}
		},
		onLoad() {


		},
		methods: {
			changeOption() {
				const data = this.option.series[0].data
				// 随机更新示例数据
				data.forEach((item, index) => {
					data.splice(index, 1, Math.random() * 40)
				})
			},
			onViewClick(options) {
				console.log(options)
			}
		}
	}
</script>

<script module="echarts" lang="renderjs">
	let myChart
	export default {
		mounted() {
			if (typeof window.echarts === 'function') {
				this.initEcharts()
			} else {
				// 动态引入较大类库避免影响页面展示
				const script = document.createElement('script')
				// view 层的页面运行在 www 根目录，其相对路径相对于 www 计算
				script.src = 'static/echarts.min.js'
				script.onload = this.initEcharts.bind(this)
				document.head.appendChild(script)
			}
		},
		methods: {
			initEcharts() {

				console.log('this.bindData')
				console.log(this.bindData)
				myChart = echarts.init(document.getElementById('echarts'))
				// 观测更新的数据在 view 层可以直接访问到
				myChart.setOption(this.option)
			},
			updateEcharts(newValue, oldValue, ownerInstance, instance) {
				// 监听 service 层数据变更
				myChart.setOption(newValue)
			},
			onClick(event, ownerInstance) {
				// 调用 service 层的方法
				ownerInstance.callMethod('onViewClick', {
					test: 'test'
				})
			}
		}
	}
</script>

<style>
	.content {
		display: flex;
		flex-direction: column;
		align-items: center;
		justify-content: center;
	}

	.echarts {
		width: 100%;
		height: 400rpx;

	}
</style>
