uni-zhihuikuangshan/components/n-safety-monitoring-canva-2/n-safety-monitoring-canva-2.vue

<template>
	<view>
		<view class="title">
			<view class="icon">
				<image src="./icon/icon_o.png" mode=""></image>
			</view>
			<view class="text">报警数量趋势</view>
		</view>
		<canvas canvas-id="canvasLineA" id="canvasLineA" @touchstart="touchLineA" style="width: 700rpx; height:500rpx;"></canvas>
	</view>
</template>

<script>
	import uCharts from '@/components/u-charts/u-charts.js';
	var _self;
	var canvaLineA = null;

	export default {
		data() {
			return {
				cWidth: '',
				cHeight: '',
				pixelRatio: 1,
			}
		},
		mounted() {
			_self = this;
			this.cWidth = uni.upx2px(700);
			this.cHeight = uni.upx2px(500);
			this.getServerData();
		},
		methods: {
			getServerData() {
				// let LineA = {
				// 	"categories": ['02-24', '02-25', '02-26', '02-27', '02-28', '03-01','03-02'],
				// 	"series": [{
				// 		name: '',
				// 		data: [0,0,0,0,0,7000,3027],
				// 		color: '#000000'
				// 	}]
				// };
				
				this.$api.jt_safety_alarm_total({
				
				}).then((res) => {
					// console.log(res.data.content)
					
					let LineA = {
						categories: [],
						data:[]
					}
					
					const categories = res.data.content.data
					categories.map(function(item,index){
						//新数组的项，用来盛放每一项中的各个参数，每次清空，这样避免改变sevm的值
						var sevm = {};
						//给每一项中的参数初始化并赋值
						sevm = item.every_date.slice(5);
						//将项放进新的数组
						LineA.categories[index] = sevm
					})
					
					const data = res.data.content.data
					data.map(function(item, index) {
						//新数组的项，用来盛放每一项中的各个参数，每次清空，这样避免改变sevm的值
						var sevm = {};
						//给每一项中的参数初始化并赋值
						sevm = item.every_count;
						//将项放进新的数组
						LineA.data[index] = sevm
					})
					
				
					// console.log(LineA)
				
					_self.showLineA("canvasLineA",LineA);
				})
			},
			showLineA(canvasId, chartData) {
				canvaLineA = new uCharts({
					$this: _self,
					canvasId: canvasId,
					type: 'line',
					fontSize: 11,
					legend: {
						show: false
					},
					dataLabel: false,
					dataPointShape: true,
					background: '#FFFFFF',
					pixelRatio: _self.pixelRatio,
					categories: chartData.categories,
					series: [{
						name: '',
						data: chartData.data,
						color: '#000000'
					}],
					animation: true,
					xAxis: {
						disableGrid: true,
						type: 'grid',
						gridColor: '#CCCCCC',
						gridType: 'dash',
						dashLength: 8
					},
					yAxis: {
						gridType: 'dash',
						gridColor: '#CCCCCC',
						dashLength: 8,
						splitNumber: 5,
						min: 10,
						max: 180,
						format: (val) => {
							return val.toFixed(0)
						}
					},
					width: _self.cWidth * _self.pixelRatio,
					height: _self.cHeight * _self.pixelRatio,
					extra: {
						line: {
							type: 'straight'
						}
					}
				});

			},
			touchLineA(e) {
				canvaLineA.showToolTip(e, {
					format: function(item, category) {
						return category + ' ' + item.name + ':' + item.data
					}
				});
			}
		}
	}
</script>

<style lang="scss">
	.title {
		margin-bottom: 60rpx;
		
		display: flex;
		align-items: center;

		.icon {
			margin-right: 10rpx;
			image{
				width: 30rpx;
				height: 30rpx;
			}
		}

		.text {}
	}
</style>