feat: add interactive Chart.js trend chart and improve KPI card layout
- Replace static SVG trend chart with Chart.js bar+line mixed chart - Click-triggered custom tooltip popup with per-day detail overlay - KPI cards: flex column layout, compact K/M currency formatting - Custom legend above chart for consistent spacing Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent) Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
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src/components/charts/TrendChart.vue
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201
src/components/charts/TrendChart.vue
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<template>
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<div class="trend-chart">
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<div class="chart-legend">
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<span><i style="background:#10b981"></i>申请量（单）</span>
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<span><i style="background:#3b82f6"></i>审批完成量（单）</span>
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<span><i style="background:#8b5cf6"></i>平均审批时长（小时）</span>
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</div>
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<div class="chart-body">
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<Bar :data="chartData" :options="chartOptions" />
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</div>
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</div>
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</template>
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<script setup>
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import { computed } from 'vue'
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import { Bar } from 'vue-chartjs'
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import {
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Chart as ChartJS,
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CategoryScale,
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LinearScale,
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BarElement,
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PointElement,
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LineElement,
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Filler,
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Tooltip,
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Legend
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} from 'chart.js'
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ChartJS.register(CategoryScale, LinearScale, BarElement, PointElement, LineElement, Filler, Tooltip, Legend)
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const props = defineProps({
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labels: { type: Array, required: true },
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applications: { type: Array, required: true },
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approved: { type: Array, required: true },
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avgHours: { type: Array, required: true }
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})
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const chartData = computed(() => ({
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labels: props.labels,
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datasets: [
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{
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label: '申请量（单）',
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data: props.applications,
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backgroundColor: '#10b981',
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borderRadius: 4,
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barPercentage: 0.6,
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categoryPercentage: 0.5,
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order: 2
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},
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{
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label: '审批完成量（单）',
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data: props.approved,
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backgroundColor: '#3b82f6',
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borderRadius: 4,
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barPercentage: 0.6,
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categoryPercentage: 0.5,
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order: 2
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},
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{
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label: '平均审批时长（小时）',
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data: props.avgHours,
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borderColor: '#8b5cf6',
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backgroundColor: 'transparent',
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borderWidth: 2,
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pointBackgroundColor: '#ffffff',
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pointBorderColor: '#8b5cf6',
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pointBorderWidth: 2,
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pointRadius: 3,
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pointHoverRadius: 5,
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type: 'line',
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yAxisID: 'y1',
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order: 1
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}
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]
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}))
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const chartOptions = {
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responsive: true,
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maintainAspectRatio: false,
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interaction: {
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mode: 'index',
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intersect: false
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},
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events: ['click', 'mousemove', 'mouseout'],
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plugins: {
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legend: {
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display: false
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},
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tooltip: {
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enabled: false,
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external: externalTooltip
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}
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},
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scales: {
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x: {
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grid: { display: false },
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ticks: {
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color: '#64748b',
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font: { size: 11 }
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}
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},
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y: {
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beginAtZero: true,
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max: 250,
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grid: { color: '#f1f5f9' },
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ticks: {
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color: '#64748b',
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font: { size: 11 },
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stepSize: 50
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}
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},
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y1: {
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position: 'right',
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beginAtZero: true,
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max: 15,
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grid: { display: false },
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ticks: {
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color: '#64748b',
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font: { size: 11 },
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stepSize: 3
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}
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}
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}
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}
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function externalTooltip(context) {
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const { chart, tooltip } = context
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let el = chart.canvas.parentNode.querySelector('.chart-tooltip')
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if (!el) {
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el = document.createElement('div')
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el.classList.add('chart-tooltip')
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el.style.cssText =
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'position:absolute;background:#fff;border:1px solid #e2e8f0;border-radius:8px;padding:12px 16px;pointer-events:none;transition:opacity .15s,transform .15s;font-family:Inter,system-ui,sans-serif;font-size:13px;box-shadow:0 4px 12px rgba(0,0,0,.08);z-index:10;opacity:0;transform:translateY(4px)'
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chart.canvas.parentNode.appendChild(el)
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}
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if (tooltip.opacity === 0) {
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el.style.opacity = '0'
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return
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}
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if (tooltip.body) {
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const titleLines = tooltip.title || []
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const bodyLines = tooltip.body.map((b) => b.lines)
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const colors = tooltip.labelColors
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const dot = (color, text) =>
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`<div style="display:flex;align-items:center;gap:6px;margin-top:4px"><span style="width:8px;height:8px;border-radius:50%;background:${color};flex-shrink:0"></span><span style="color:#64748b">${text}</span></div>`
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el.innerHTML =
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`<div style="font-weight:600;color:#1e293b;margin-bottom:4px">${titleLines.join('')}</div>` +
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bodyLines
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.map((lines, i) =>
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lines.map((line) => dot(colors[i]?.backgroundColor || colors[i]?.borderColor || '#999', line))
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)
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.join('')
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}
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const { offsetLeft, offsetTop } = chart.canvas
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const left = offsetLeft + tooltip.caretX
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const top = offsetTop + tooltip.caretY
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el.style.opacity = '1'
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el.style.transform = 'translateY(0)'
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el.style.left = `${left}px`
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el.style.top = `${top - el.offsetHeight - 12}px`
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el.style.transform = `translate(-50%, 0)`
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}
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</script>
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<style scoped>
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.trend-chart {
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height: 280px;
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display: flex;
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flex-direction: column;
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}
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.chart-legend {
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display: flex;
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align-items: center;
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gap: 16px;
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color: #475569;
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font-size: 12px;
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margin-bottom: 12px;
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}
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.chart-legend i {
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display: inline-block;
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width: 8px;
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height: 8px;
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border-radius: 2px;
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margin-right: 4px;
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vertical-align: middle;
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}
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.chart-body {
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flex: 1;
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min-height: 0;
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}
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</style>
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