docs(compare-funnel): 添加了对比漏斗图案例

examples/case/statistical-scenario/demo/compare-funnel.ts

@@ -0,0 +1,277 @@
+import { G2, P } from '@antv/g2plot';
+import { deepMix } from '@antv/util';
+
+const currDate = ['2020-08-01'];
+const compareDate = ['2020-07-06'];
+const name = ['本期', '对比期'];
+const tooltipItemsName = ['本期留存', '本期流失', '对比期留存', '对比期流失'];
+
+const columnColor = [
+  {
+    transformed: '#3b89ff',
+    'non-transformed': '#e1eeff',
+    increased: '#e1eeff',
+  },
+  {
+    transformed: '#4ccaa1',
+    'non-transformed': '#defbf1',
+    increased: '#defbf1',
+  },
+];
+const rawData = [
+  { date: '2020-08-01', index: '投放点击用户数', type: '本期', value: 46893 },
+  { date: '2020-08-01', index: '会场曝光用户数', type: '本期', value: 37896 },
+  { date: '2020-08-01', index: '会场点击用户数', type: '本期', value: 34896 },
+  { date: '2020-08-01', index: '权益领取用户数', type: '本期', value: 28896 },
+  { date: '2020-08-01', index: '引导IUV', type: '本期', value: 14896 },
+  { date: '2020-08-01', index: '引导成交用户数', type: '本期', value: 4755 },
+  { date: '2020-07-06', index: '投放点击用户数', type: '对比期', value: 46893 },
+  { date: '2020-07-06', index: '会场曝光用户数', type: '对比期', value: 37896 },
+  { date: '2020-07-06', index: '会场点击用户数', type: '对比期', value: 34896 },
+  { date: '2020-07-06', index: '权益领取用户数', type: '对比期', value: 28896 },
+  { date: '2020-07-06', index: '引导IUV', type: '对比期', value: 36896 },
+  { date: '2020-07-06', index: '引导成交用户数', type: '对比期', value: 34896 },
+];
+
+function processData(rawData) {
+  const res = [];
+  [rawData.filter(({ type }) => type === '本期'), rawData.filter(({ type }) => type === '对比期')].forEach((data) => {
+    const len = data.length - 1;
+    for (let idx = 0; idx < data.length; idx += 1) {
+      const prevVal = data[idx === 0 ? 0 : idx - 1].value;
+      const nextVal = data[idx === len ? len : idx + 1].value;
+      const { date, index, value, type } = data[idx];
+      res.push({
+        index,
+        value,
+        type,
+        date,
+        flag: 'transformed',
+      });
+      const incFlag = value < nextVal;
+      res.push({
+        index,
+        type,
+        date,
+        value: Math.max(prevVal - value, 0),
+        flag: incFlag ? 'increased' : 'non-transformed',
+        rate: incFlag ? (nextVal - value) / value : nextVal / value,
+      });
+    }
+  });
+  return res;
+}
+
+function getRectPath(points) {
+  const path = [];
+  for (let i = 0; i < points.length; i++) {
+    const point = points[i];
+    if (point) {
+      const action = i === 0 ? 'M' : 'L';
+      path.push([action, point.x, point.y]);
+    }
+  }
+
+  const first = points[0];
+  path.push(['L', first.x, first.y]);
+  path.push(['z']);
+  return path;
+}
+
+function getFillAttrs(cfg) {
+  const defaultAttrs = {
+    lineWidth: 0,
+    fill: '#1890FF',
+    fillOpacity: 0.85,
+  };
+
+  return {
+    ...defaultAttrs,
+    ...cfg.style,
+    fill: cfg.color,
+    stroke: cfg.color,
+    fillOpacity: cfg.opacity,
+  };
+}
+
+// 自定义 Shape
+G2.registerShape('interval', 'contrast-funnel', {
+  draw(cfg, container) {
+    const attrs = getFillAttrs(cfg);
+    let rectPath = getRectPath(cfg.points);
+    rectPath = this.parsePath(rectPath);
+
+    const group = container.addGroup();
+    group.addShape('path', {
+      attrs: {
+        ...attrs,
+        path: rectPath,
+      },
+    });
+    const { flag } = cfg.data;
+    if (cfg.nextPoints && flag !== 'transformed') {
+      let linkPath = [
+        ['M', cfg.points[2].x, cfg.points[3].y],
+        ['L', cfg.nextPoints[0].x, cfg.nextPoints[0].y],
+      ];
+
+      if (cfg.nextPoints[0].y === 0) {
+        linkPath[1] = ['L', cfg.nextPoints[1].x, cfg.nextPoints[1].y];
+      }
+      linkPath = this.parsePath(linkPath);
+
+      const [[, x1, y1], [, x2, y2]] = linkPath;
+      group.addShape('path', {
+        attrs: {
+          path: linkPath,
+          stroke: '#c5d0d9',
+        },
+      });
+      const text = group.addShape('text', {
+        attrs: {
+          x: (x1 + x2) / 2,
+          y: (y1 + y2) / 2,
+          text: `${{ 'non-transformed': '▼转化率', increased: '▲增长率' }[flag]}${(cfg.data.rate * 100).toFixed(0)}%`,
+          fill: { 'non-transformed': '#009f86', increased: '#ff4737' }[flag],
+          textAlign: 'center',
+          textBaseline: 'middle',
+          fontSize: 14,
+        },
+        zIndex: 2,
+      });
+      const { x, y, width, height } = text.getBBox();
+      group.addShape('rect', {
+        attrs: {
+          x,
+          y,
+          width,
+          height,
+          fill: 'white',
+        },
+        zIndex: 1,
+      });
+      text.toFront();
+    }
+    return group;
+  },
+});
+
+const defaultOptions = {};
+
+function adaptor(params) {
+  const { chart, options } = params;
+  const { data, theme } = options;
+
+  chart.data(data);
+  chart.legend(false);
+  chart.theme(deepMix({}, theme || G2.getTheme(theme)));
+  chart.scale('value', { nice: true });
+
+  chart.facet('mirror', {
+    fields: ['type'],
+    spacing: ['12%', 0],
+    transpose: true,
+    showTitle: false,
+    eachView: (view, facet) => {
+      const idx = facet.columnIndex;
+      // 关闭所有 axis
+      view.axis(false);
+      view.legend({
+        custom: true,
+        position: ['top-right', 'top-left'][idx],
+        items: [
+          {
+            name: name[idx],
+            marker: {
+              symbol: 'hyphen',
+              style: {
+                stroke: columnColor.map((c) => c.transformed)[idx],
+              },
+            },
+          },
+        ],
+      });
+      view
+        .coordinate()
+        .transpose()
+        .scale(...(idx === 0 ? [-1, -1] : [1, -1]));
+      view
+        .interval()
+        .adjust('stack')
+        .position('index*value')
+        .color('index*flag', (index, flag) => columnColor[idx][flag])
+        .label('value*flag', (value, flag) => {
+          if (flag !== 'transformed') return { content: '' };
+          return {
+            position: 'left',
+            content: value.toLocaleString(),
+            style: {
+              textAlign: ['end', 'start'][idx],
+              fill: '#fff',
+              shadowColor: '#212121',
+              shadowBlur: 5,
+            },
+          };
+        })
+        .shape('contrast-funnel');
+    },
+  });
+
+  chart.tooltip({
+    shared: true,
+    title: (item) => {
+      return `${item}`;
+    },
+    customItems: ([currSurplus, currLoss, compareSurplus, compareLoss]) => {
+      const [currColor, completeColor] = columnColor;
+      const [n1, n2, n3, n4] = tooltipItemsName;
+      return [
+        {
+          marker: true,
+          color: currColor.transformed,
+          name: `${n1}(${currSurplus.data.date})`,
+          value: Number(currSurplus.value).toLocaleString(),
+        },
+        {
+          marker: true,
+          color: currColor['non-transformed'],
+          name: `${n2}(${currLoss.data.date})`,
+          value: Number(currLoss.value).toLocaleString(),
+        },
+        {
+          marker: true,
+          color: completeColor.transformed,
+          name: `${n3}(${compareSurplus.data.date})`,
+          value: Number(compareSurplus.value).toLocaleString(),
+        },
+        {
+          marker: true,
+          color: completeColor['non-transformed'],
+          name: `${n4}(${compareLoss.data.date})`,
+          value: Number(compareLoss.value).toLocaleString(),
+        },
+      ];
+    },
+  });
+
+  rawData
+    .filter(({ type }) => type === '本期')
+    .forEach(({ index }, idx) => {
+      chart.annotation().text({
+        content: index,
+        style: { textAlign: 'center', textBaseline: 'middle' },
+        position: () => {
+          const { y: cY, height: cHeight } = chart.coordinateBBox;
+          const { y: vY, height: vHeight } = chart.views[0].coordinateBBox;
+          const yScale = chart.views[0].getScaleByField('index');
+          return ['50%', `${((vY - cY + vHeight * yScale.scale(index)) / cHeight) * 100}%`];
+        },
+      });
+    });
+
+  chart.removeInteraction('legend-filter'); // 移除图例过滤交互
+}
+
+const funnel = new P('container', {}, adaptor, { data: processData(rawData) });
+
+funnel.render();

examples/case/statistical-scenario/demo/meta.json

@@ -4,6 +4,15 @@
     "en": "Category"
   },
   "demos": [
+    {
+      "filename": "compare-funnel.ts",
+      "title": {
+        "zh": "对比漏斗图",
+        "en": "Compare Funnel Diagram"
+      },
+      "new": true,
+      "screenshot": "https://gw.alipayobjects.com/mdn/rms_2274c3/afts/img/A*gS12TpN1MN8AAAAAAAAAAAAAARQnAQ"
+    },
     {
       "filename": "trend.jsx",
       "title": {
@@ -36,7 +45,6 @@
         "en": "Statistical Charts-Pie"
       },
       "screenshot": "https://gw.alipayobjects.com/mdn/rms_d314dd/afts/img/A*OOnhQI4Sme4AAAAAAAAAAAAAARQnAQ"
-
     },
     {
       "filename": "trend-funnel.ts",