热水-收益分析页面，收益趋势添加最大最小值标识

src/views/hotWater/profitAnalysis/index.vue

@@ -702,7 +702,7 @@ export default {
         // 初始化收益趋势折线图
         initTrendChart() {
             this.trendChart = echarts.init(this.$refs.trendChart_ref);
-
+            const titleFontSize = this.$refs.trendChart_ref.offsetWidth / 50;
             const dates = this.chartData.map(item => item.curDate).reverse();
             const incomeData = this.chartData.map(item => item.totalIncome).reverse();
 
@@ -717,8 +717,9 @@ export default {
                     show: false,
                 },
                 grid: {
+                    // top: "15%",
                     left: "3%",
-                    right: "5%",
+                    right: "10%",
                     bottom: "3%",
                     containLabel: true
                 },
@@ -797,6 +798,45 @@ export default {
                                     { offset: 1, color: "rgba(16, 185, 129, 0.1)" }
                                 ]
                             }
+                        },
+                        markPoint: {
+                            data: [
+                                {
+                                    type: 'max',
+                                    name: '最大值',
+                                    symbol: 'arrow',
+                                    symbolRotate: 180,
+                                    label: {
+                                        formatter: function (params) {
+                                            return params.value + '元';
+                                        }
+                                    }
+                                },
+                                {
+                                    type: 'min',
+                                    name: '最小值',
+                                    symbol: 'arrow',
+                                    symbolRotate: 180,
+                                    label: {
+                                        formatter: function (params) {
+                                            return params.value + '元';
+                                        }
+                                    }
+                                }
+                            ],
+                            label: {
+                                fontSize: 14,
+                                color: "#10b981",
+                                fontWeight: 'bold',
+                                padding: [4, 8],
+                                borderRadius: 4,
+                                backgroundColor: 'rgba(0, 0, 0, 0.7)',
+                                offset: [0, -30]
+                            },
+                            itemStyle: {
+                                color: "#10b981",
+                            },
+                            symbolSize: 14
                         }
                     }
                 ]