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

	</view>
</template>

<script>
	export default {
		name: 'chart',
		props: {
			bindData: {
				type: Object,
				default: ''
			}
		},
		data() {
			return {
				
			}
		},
		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() {

				var fontColor = "#fff";
				let noramlSize = 16;
				var datas = {
					// value:11,
					value:  parseInt(this.bindData.completion),
					company: "%",
					ringColor: [{
						offset: 0,
						color: '#0BA0D7' // 0% 处的颜色
					}, {
						offset: 1,
						color: '#24F0E4' // 100% 处的颜色
					}]
				},


				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({
					title: {
						text: '{name|' + datas.value + datas.company + '}\n{val|任务完成率}',
						x: 'center',
						y: 'center',
						textStyle: {
							rich: {
								name: {
									fontSize: 32,
									fontWeight: 'normal',
									color: '#24F0E4',
									fontFamily: 'IMPACT',

									padding: [8, 0]
								},
								val: {
									fontSize: 16,
									color: '#333333',
								}
							}
						}
					},
					color: ['#F4F5F7'],
					legend: {
						show: false,
						data: []
					},

					series: [{
						name: 'Line 1',
						type: 'pie',
						clockWise: true,
						radius: ['64%', '80%'],
						itemStyle: {
							normal: {
								label: {
									show: false
								},
								labelLine: {
									show: false
								}
							}
						},
						hoverAnimation: false,
						data: [{
							value: datas.value,
							name: '',
							itemStyle: {
								normal: {
									color: { // 完成的圆环的颜色
										colorStops: datas.ringColor
									},
									label: {
										show: false
									},
									labelLine: {
										show: false
									}
								}
							}
						}, {
							name: '',
							value: 100 - datas.value
						}]
					}]
				})
			},
			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>
