refactor: 使用ucharts替换原生canvas绘制收益曲线

- 安装@qiun/ucharts依赖
- 使用qiun-ucharts组件绘制折线图
- 配置平滑曲线、渐变填充、网格线
- 移除原生canvas绘制代码，简化逻辑
- 支持触摸查看数据（ucharts内置）

package-lock.json

@@ -5,9 +5,16 @@
   "packages": {
     "": {
       "dependencies": {
+        "@qiun/ucharts": "^2.5.0-20230101",
         "uview-plus": "^3.7.13"
       }
     },
+    "node_modules/@qiun/ucharts": {
+      "version": "2.5.0-20230101",
+      "resolved": "https://registry.npmjs.org/@qiun/ucharts/-/ucharts-2.5.0-20230101.tgz",
+      "integrity": "sha512-C7ccBgfPuGF6dxTRuMW0NPPMSCf1k/kh3I9zkRVBc5PaivudX/rPL+jd2Wty6gn5ya5L3Ob+YmYe09V5xw66Cw==",
+      "license": "Apache"
+    },
     "node_modules/uview-plus": {
       "version": "3.7.13",
       "resolved": "https://registry.npmjs.org/uview-plus/-/uview-plus-3.7.13.tgz",

package.json

@@ -1,5 +1,6 @@
 {
   "dependencies": {
+    "@qiun/ucharts": "^2.5.0-20230101",
     "uview-plus": "^3.7.13"
   }
 }

pages/detail/detail.vue

@@ -81,22 +81,13 @@
         
         <!-- 收益曲线 -->
         <view v-else class="nav-chart-wrapper">
-          <canvas 
+          <qiun-ucharts 
-            canvas-id="navChart"
+            type="line"
-            id="navChart"
+            :opts="chartOpts"
-            class="nav-canvas"
+            :chartData="chartData"
-            @touchstart="onChartTouchStart"
+            :canvas2d="true"
-            @touchmove="onChartTouchMove"
+            canvasId="navChartCanvas"
-          ></canvas>
+          />
-          
-          <!-- 悬浮提示 -->
-          <view v-if="showTooltip" class="chart-tooltip" :style="{left: tooltipX, top: tooltipY}">
-            <text class="tooltip-date">{{ tooltipDate }}</text>
-            <text class="tooltip-value">净值: {{ tooltipNav.toFixed(4) }}</text>
-            <text class="tooltip-return" :class="tooltipReturn >= 0 ? 'positive' : 'negative'">
-              收益: {{ tooltipReturn >= 0 ? '+' : '' }}{{ tooltipReturn.toFixed(2) }}%
-            </text>
-          </view>
         </view>
         
         <!-- 统计指标 -->
@@ -443,8 +434,9 @@
 </template>
 
 <script setup>
-import { ref, onMounted, getCurrentInstance } from 'vue';
+import { ref, onMounted, getCurrentInstance, computed } from 'vue';
 import { api } from '../../utils/api';
+import qiunUcharts from '@qiun/ucharts/components/qiun-ucharts/qiun-ucharts.vue';
 
 // 获取 u-toast 实例
 const { proxy } = getCurrentInstance();
@@ -491,12 +483,57 @@ const navLoading = ref(false);
 const navPeriod = ref('30d');
 const navHistory = ref([]);
 const navStatistics = ref(null);
-const showTooltip = ref(false);
+
-const tooltipX = ref('0');
+// 图表数据
-const tooltipY = ref('0');
+const chartData = computed(() => {
-const tooltipDate = ref('');
+  if (!navHistory.value || navHistory.value.length === 0) {
-const tooltipNav = ref(0);
+    return { categories: [], series: [] };
-const tooltipReturn = ref(0);
+  }
+  
+  return {
+    categories: navHistory.value.map(item => item.date.split('-').slice(1).join('/')),
+    series: [{
+      name: '净值',
+      data: navHistory.value.map(item => item.nav)
+    }]
+  };
+});
+
+// 图表配置
+const chartOpts = {
+  color: ['#064E3B'],
+  padding: [15, 15, 0, 15],
+  enableScroll: false,
+  legend: {
+    show: false
+  },
+  xAxis: {
+    disableGrid: true,
+    axisLine: false,
+    fontSize: 10,
+    fontColor: '#6B7280'
+  },
+  yAxis: {
+    data: [{ min: 0 }],
+    gridColor: '#E5E7EB',
+    gridType: 'dash',
+    dashLength: 4,
+    fontSize: 10,
+    fontColor: '#6B7280'
+  },
+  extra: {
+    line: {
+      type: 'curve',
+      width: 2,
+      activeType: 'hollow'
+    },
+    area: {
+      type: 'curve',
+      opacity: 0.3,
+      addLine: true
+    }
+  }
+};
 
 // 交易表单
 const showTransactionForm = ref(false);
@@ -666,11 +703,6 @@ const fetchNavHistory = async () => {
     if (response.code === 200 && response.data) {
       navHistory.value = response.data.navHistory || [];
       navStatistics.value = response.data.statistics || null;
-      
-      // 绘制图表
-      if (navHistory.value.length > 0) {
-        setTimeout(() => drawNavChart(), 100);
-      }
     }
   } catch (error) {
     console.error('获取净值历史失败:', error);
@@ -685,143 +717,6 @@ const changeNavPeriod = (period) => {
   fetchNavHistory();
 };
 
-// 绘制净值曲线图
-const drawNavChart = () => {
-  const ctx = uni.createCanvasContext('navChart');
-  const data = navHistory.value;
-  
-  if (!data || data.length === 0) return;
-  
-  // 获取canvas尺寸（rpx转px）
-  const width = 320; // 640rpx
-  const height = 200; // 400rpx
-  const padding = { top: 20, right: 20, bottom: 30, left: 50 };
-  const chartWidth = width - padding.left - padding.right;
-  const chartHeight = height - padding.top - padding.bottom;
-  
-  // 计算数据范围
-  const navValues = data.map(item => item.nav);
-  const minNav = Math.min(...navValues);
-  const maxNav = Math.max(...navValues);
-  const navRange = maxNav - minNav || 1;
-  
-  // 清空画布
-  ctx.clearRect(0, 0, width, height);
-  
-  // 绘制背景网格线
-  ctx.setStrokeStyle('#E5E7EB');
-  ctx.setLineWidth(0.5);
-  for (let i = 0; i <= 4; i++) {
-    const y = padding.top + (chartHeight / 4) * i;
-    ctx.beginPath();
-    ctx.moveTo(padding.left, y);
-    ctx.lineTo(width - padding.right, y);
-    ctx.stroke();
-  }
-  
-  // 绘制Y轴标签
-  ctx.setFillStyle('#6B7280');
-  ctx.setFontSize(10);
-  ctx.setTextAlign('right');
-  for (let i = 0; i <= 4; i++) {
-    const y = padding.top + (chartHeight / 4) * i;
-    const value = maxNav - (navRange / 4) * i;
-    ctx.fillText(value.toFixed(2), padding.left - 5, y + 3);
-  }
-  
-  // 绘制曲线
-  ctx.beginPath();
-  ctx.setStrokeStyle('#064E3B');
-  ctx.setLineWidth(2);
-  
-  data.forEach((item, index) => {
-    const x = padding.left + (chartWidth / (data.length - 1)) * index;
-    const y = padding.top + chartHeight - ((item.nav - minNav) / navRange) * chartHeight;
-    
-    if (index === 0) {
-      ctx.moveTo(x, y);
-    } else {
-      ctx.lineTo(x, y);
-    }
-  });
-  ctx.stroke();
-  
-  // 绘制填充区域
-  ctx.beginPath();
-  data.forEach((item, index) => {
-    const x = padding.left + (chartWidth / (data.length - 1)) * index;
-    const y = padding.top + chartHeight - ((item.nav - minNav) / navRange) * chartHeight;
-    
-    if (index === 0) {
-      ctx.moveTo(x, y);
-    } else {
-      ctx.lineTo(x, y);
-    }
-  });
-  ctx.lineTo(padding.left + chartWidth, padding.top + chartHeight);
-  ctx.lineTo(padding.left, padding.top + chartHeight);
-  ctx.closePath();
-  
-  const gradient = ctx.createLinearGradient(0, padding.top, 0, padding.top + chartHeight);
-  gradient.addColorStop(0, 'rgba(6, 78, 59, 0.3)');
-  gradient.addColorStop(1, 'rgba(6, 78, 59, 0.05)');
-  ctx.setFillStyle(gradient);
-  ctx.fill();
-  
-  // 绘制X轴日期标签
-  ctx.setFillStyle('#6B7280');
-  ctx.setFontSize(10);
-  ctx.setTextAlign('center');
-  
-  const labelCount = Math.min(5, data.length);
-  const labelStep = Math.floor(data.length / labelCount);
-  for (let i = 0; i < labelCount; i++) {
-    const index = i * labelStep;
-    if (index < data.length) {
-      const x = padding.left + (chartWidth / (data.length - 1)) * index;
-      const dateStr = data[index].date.split('-').slice(1).join('/');
-      ctx.fillText(dateStr, x, height - 10);
-    }
-  }
-  
-  ctx.draw();
-};
-
-// 图表触摸事件
-const onChartTouchStart = (e) => {
-  showChartTooltip(e);
-};
-
-const onChartTouchMove = (e) => {
-  showChartTooltip(e);
-};
-
-const showChartTooltip = (e) => {
-  if (!navHistory.value || navHistory.value.length === 0) return;
-  
-  const touch = e.touches[0];
-  const data = navHistory.value;
-  
-  // 计算触摸点对应的数据索引
-  const width = 320;
-  const padding = { left: 50, right: 20 };
-  const chartWidth = width - padding.left - padding.right;
-  const x = touch.x - padding.left;
-  const index = Math.round((x / chartWidth) * (data.length - 1));
-  
-  if (index >= 0 && index < data.length) {
-    const item = data[index];
-    tooltipDate.value = item.date;
-    tooltipNav.value = item.nav;
-    tooltipReturn.value = item.cumulativeReturn;
-    
-    // 设置tooltip位置
-    tooltipX.value = `${Math.min(Math.max(touch.x - 50, 10), width - 110)}px`;
-    tooltipY.value = `${Math.max(touch.y - 80, 10)}px`;
-    showTooltip.value = true;
-  }
-};
-
 onMounted(async () => {
   loading.value = true;
   await fetchPortfolioData();
@@ -1404,48 +1299,6 @@ const deletePortfolio = async () => {
   height: 400rpx;
 }
 
-.nav-canvas {
-  width: 640rpx;
-  height: 400rpx;
-}
-
-.chart-tooltip {
-  position: absolute;
-  background-color: rgba(0, 0, 0, 0.8);
-  border-radius: 12rpx;
-  padding: 16rpx 20rpx;
-  pointer-events: none;
-  z-index: 100;
-}
-
-.tooltip-date {
-  display: block;
-  font-size: 22rpx;
-  color: #FFFFFF;
-  margin-bottom: 8rpx;
-}
-
-.tooltip-value {
-  display: block;
-  font-size: 24rpx;
-  color: #FFFFFF;
-  margin-bottom: 4rpx;
-}
-
-.tooltip-return {
-  display: block;
-  font-size: 24rpx;
-  font-weight: 600;
-}
-
-.tooltip-return.positive {
-  color: #EF4444;
-}
-
-.tooltip-return.negative {
-  color: #10B981;
-}
-
 .period-tabs {
   display: flex;
   gap: 16rpx;