实现动态日活趋势图 - 支持数据驱动，自动生成曲线，支持交互点击

demo/frontend/src/views/Home.vue

@@ -109,8 +109,8 @@
           </div>
           <div class="chart-container">
             <div class="line-chart">
-              <!-- SVG 曲线图 -->
-              <svg width="100%" height="200" viewBox="0 0 840 200" class="chart-svg">
+              <!-- 动态SVG曲线图 -->
+              <svg width="100%" height="200" :viewBox="`0 0 ${chartWidth} ${chartHeight}`" class="chart-svg">
                 <!-- 网格线 -->
                 <defs>
                   <pattern id="grid" width="60" height="40" patternUnits="userSpaceOnUse">
@@ -119,61 +119,61 @@
                 </defs>
                 <rect width="100%" height="100%" fill="url(#grid)" />
                 
-                <!-- 数据曲线 - 平滑连接12个月的数据点 -->
-                <path d="M 60,160 C 90,155 120,150 150,140 C 180,130 210,115 240,120 C 270,105 300,100 330,90 C 360,80 390,85 420,80 C 450,85 480,85 510,95 C 540,95 570,100 600,100 C 630,95 660,90 690,80 C 720,70 750,70 780,70" 
+                <!-- 动态数据曲线 -->
+                <path :d="chartPath" 
                       fill="none" 
                       stroke="#3b82f6" 
                       stroke-width="3" 
                       class="chart-line-path"/>
                 
-                <!-- 12个月的数据点 - 每个月一个点 -->
-                <circle cx="60" cy="160" r="4" fill="#3b82f6" class="chart-dot"/>
-                <circle cx="120" cy="150" r="4" fill="#3b82f6" class="chart-dot"/>
-                <circle cx="180" cy="140" r="4" fill="#3b82f6" class="chart-dot"/>
-                <circle cx="240" cy="120" r="4" fill="#3b82f6" class="chart-dot"/>
-                <circle cx="300" cy="100" r="4" fill="#3b82f6" class="chart-dot"/>
-                <circle cx="360" cy="90" r="4" fill="#3b82f6" class="chart-dot"/>
-                <circle cx="420" cy="80" r="4" fill="#3b82f6" class="chart-dot"/>
-                <circle cx="480" cy="85" r="4" fill="#3b82f6" class="chart-dot"/>
-                <circle cx="540" cy="95" r="4" fill="#3b82f6" class="chart-dot"/>
-                <circle cx="600" cy="100" r="4" fill="#3b82f6" class="chart-dot"/>
-                <circle cx="660" cy="90" r="4" fill="#3b82f6" class="chart-dot"/>
-                <circle cx="720" cy="70" r="4" fill="#3b82f6" class="chart-dot"/>
+                <!-- 动态数据点 -->
+                <circle 
+                  v-for="(point, index) in chartPoints" 
+                  :key="index"
+                  :cx="point.x" 
+                  :cy="point.y" 
+                  r="4" 
+                  fill="#3b82f6" 
+                  class="chart-dot"
+                  @click="handlePointClick(point)"
+                  style="cursor: pointer;"/>
                 
-                <!-- 高亮数据点 - 6月数据点 -->
-                <circle cx="360" cy="90" r="6" fill="#3b82f6" class="highlight-dot"/>
-                <circle cx="360" cy="90" r="12" fill="#3b82f6" opacity="0.2" class="highlight-ring"/>
-                
-                <!-- 工具提示 - 6月数据 -->
-                <g class="tooltip-group" transform="translate(360, 70)">
-                  <rect x="-30" y="-40" width="60" height="30" rx="6" fill="#1e293b" class="tooltip-bg"/>
-                  <text x="0" y="-25" text-anchor="middle" fill="white" font-size="12" font-weight="600" class="tooltip-value">1,000</text>
-                  <text x="0" y="-10" text-anchor="middle" fill="white" font-size="10" opacity="0.8" class="tooltip-date">6月12号</text>
-                  <!-- 工具提示箭头 -->
-                  <polygon points="0,0 -5,10 5,10" fill="#1e293b" class="tooltip-arrow"/>
-                </g>
+                <!-- 高亮数据点 -->
+                <template v-if="highlightedPoint">
+                  <circle 
+                    :cx="highlightedPoint.x" 
+                    :cy="highlightedPoint.y" 
+                    r="6" 
+                    fill="#3b82f6" 
+                    class="highlight-dot"/>
+                  <circle 
+                    :cx="highlightedPoint.x" 
+                    :cy="highlightedPoint.y" 
+                    r="12" 
+                    fill="#3b82f6" 
+                    opacity="0.2" 
+                    class="highlight-ring"/>
+                  
+                  <!-- 动态工具提示 -->
+                  <g class="tooltip-group" :transform="`translate(${highlightedPoint.x}, ${highlightedPoint.y - 20})`">
+                    <rect x="-30" y="-40" width="60" height="30" rx="6" fill="#1e293b" class="tooltip-bg"/>
+                    <text x="0" y="-25" text-anchor="middle" fill="white" font-size="12" font-weight="600" class="tooltip-value">
+                      {{ highlightedPoint.value.toLocaleString() }}
+                    </text>
+                    <text x="0" y="-10" text-anchor="middle" fill="white" font-size="10" opacity="0.8" class="tooltip-date">
+                      {{ highlightedPoint.label }}
+                    </text>
+                    <!-- 工具提示箭头 -->
+                    <polygon points="0,0 -5,10 5,10" fill="#1e293b" class="tooltip-arrow"/>
+                  </g>
+                </template>
               </svg>
             </div>
             <div class="chart-x-axis">
-              <span>1月</span>
-              <span>2月</span>
-              <span>3月</span>
-              <span>4月</span>
-              <span>5月</span>
-              <span>6月</span>
-              <span>7月</span>
-              <span>8月</span>
-              <span>9月</span>
-              <span>10月</span>
-              <span>11月</span>
-              <span>12月</span>
+              <span v-for="data in monthlyData" :key="data.month">{{ data.label }}</span>
             </div>
             <div class="chart-y-axis">
-              <span>1500</span>
-              <span>1000</span>
-              <span>500</span>
-              <span>100</span>
-              <span>0</span>
+              <span v-for="tick in [1500, 1200, 900, 600, 300, 0]" :key="tick">{{ tick }}</span>
             </div>
           </div>
         </div>
@@ -231,7 +231,7 @@
 </template>
 
 <script setup>
-import { ref, onMounted } from 'vue'
+import { ref, onMounted, computed } from 'vue'
 import { useRouter } from 'vue-router'
 import { useUserStore } from '@/stores/user'
 import { ElMessage } from 'element-plus'
@@ -239,10 +239,87 @@ import { ElMessage } from 'element-plus'
 const router = useRouter()
 const userStore = useUserStore()
 
+// 模拟数据 - 实际项目中应该从API获取
+const monthlyData = ref([
+  { month: 1, value: 1200, label: '1月' },
+  { month: 2, value: 1100, label: '2月' },
+  { month: 3, value: 1000, label: '3月' },
+  { month: 4, value: 900, label: '4月' },
+  { month: 5, value: 800, label: '5月' },
+  { month: 6, value: 1000, label: '6月' },
+  { month: 7, value: 1200, label: '7月' },
+  { month: 8, value: 1150, label: '8月' },
+  { month: 9, value: 1300, label: '9月' },
+  { month: 10, value: 1250, label: '10月' },
+  { month: 11, value: 1100, label: '11月' },
+  { month: 12, value: 950, label: '12月' }
+])
+
+const selectedYear = ref(2025)
+const highlightedPoint = ref(null)
+
+// 计算图表尺寸和比例
+const chartWidth = 800
+const chartHeight = 200
+const padding = 60
+
+// 计算数据点的SVG坐标
+const chartPoints = computed(() => {
+  const maxValue = Math.max(...monthlyData.value.map(d => d.value))
+  const minValue = Math.min(...monthlyData.value.map(d => d.value))
+  const valueRange = maxValue - minValue
+  
+  return monthlyData.value.map((data, index) => {
+    const x = padding + (index * (chartWidth - 2 * padding) / (monthlyData.value.length - 1))
+    const y = padding + ((maxValue - data.value) / valueRange) * (chartHeight - 2 * padding)
+    return {
+      x,
+      y,
+      value: data.value,
+      label: data.label,
+      month: data.month
+    }
+  })
+})
+
+// 生成SVG路径
+const chartPath = computed(() => {
+  if (chartPoints.value.length < 2) return ''
+  
+  let path = `M ${chartPoints.value[0].x},${chartPoints.value[0].y}`
+  
+  for (let i = 1; i < chartPoints.value.length; i++) {
+    const prev = chartPoints.value[i - 1]
+    const curr = chartPoints.value[i]
+    const next = chartPoints.value[i + 1]
+    
+    if (next) {
+      // 使用三次贝塞尔曲线创建平滑路径
+      const cp1x = prev.x + (curr.x - prev.x) / 3
+      const cp1y = prev.y
+      const cp2x = curr.x - (next.x - curr.x) / 3
+      const cp2y = curr.y
+      
+      path += ` C ${cp1x},${cp1y} ${cp2x},${cp2y} ${curr.x},${curr.y}`
+    } else {
+      // 最后一个点
+      const cp1x = prev.x + (curr.x - prev.x) / 3
+      const cp1y = prev.y
+      path += ` C ${cp1x},${cp1y} ${curr.x},${curr.y} ${curr.x},${curr.y}`
+    }
+  }
+  
+  return path
+})
+
+// 处理数据点点击
+const handlePointClick = (point) => {
+  highlightedPoint.value = point
+}
+
 // 导航功能
 const goToUsers = () => {
   ElMessage.info('跳转到会员管理')
-  // router.push('/admin/users')
 }
 
 const goToOrders = () => {
@@ -256,21 +333,37 @@ const goToOrders = () => {
 
 const goToAPI = () => {
   ElMessage.info('跳转到API管理')
-  // router.push('/admin/api')
 }
 
 const goToTasks = () => {
   ElMessage.info('跳转到生成任务记录')
-  // router.push('/admin/tasks')
 }
 
 const goToSettings = () => {
   ElMessage.info('跳转到系统设置')
-  // router.push('/admin/settings')
+}
+
+// 模拟数据加载
+const loadChartData = async () => {
+  try {
+    // 这里应该调用真实的API
+    // const response = await fetch('/api/dashboard/monthly-active-users')
+    // const data = await response.json()
+    // monthlyData.value = data
+    
+    // 模拟API延迟
+    await new Promise(resolve => setTimeout(resolve, 500))
+    
+    // 可以在这里更新数据
+    console.log('图表数据加载完成')
+  } catch (error) {
+    console.error('加载图表数据失败:', error)
+    ElMessage.error('加载数据失败')
+  }
 }
 
 onMounted(() => {
-  // 初始化数据
+  loadChartData()
 })
 </script>