feat: html label supported

__tests__/integration/utils/createNodeGCanvas.ts

@@ -11,6 +11,9 @@ export function createNodeGCanvas(width: number, height: number): Canvas {
 
   // Create a renderer, unregister plugin relative to DOM.
   const renderer = new Renderer();
+  // Remove html plugin to ssr.
+  const htmlRendererPlugin = renderer.getPlugin('html-renderer');
+  renderer.unregisterPlugin(htmlRendererPlugin);
   const domInteractionPlugin = renderer.getPlugin('dom-interaction');
   renderer.unregisterPlugin(domInteractionPlugin);
   renderer.registerPlugin(

__tests__/plots/static/alphabet-interval-html-label.ts

@@ -0,0 +1,41 @@
+import { G2Spec } from '../../../src';
+
+export function alphabetIntervalHtmlLabel(): G2Spec {
+  return {
+    type: 'interval',
+    transform: [{ type: 'sortX', by: 'y', reverse: true }],
+    data: {
+      type: 'fetch',
+      value: 'data/alphabet.csv',
+    },
+    axis: {
+      y: { labelFormatter: '.0%' },
+    },
+    encode: {
+      x: 'letter',
+      y: 'frequency',
+      color: 'steelblue',
+    },
+    labels: [
+      {
+        text: 'frequency',
+        transform: [
+          {
+            type: 'overlapHide',
+          },
+        ],
+        className: 'alphabet-labels',
+        render: (
+          _,
+          datum,
+        ) => `<div style="left:-50%;top:-16px;position:relative;font-size:12px;">
+          <span style="color: blue">${
+            datum.letter
+          }</span>:<span style="color: black">${datum.frequency.toFixed(
+          2,
+        )}</span>
+        </div>`,
+      },
+    ],
+  };
+}

__tests__/plots/static/index.ts

@@ -1,4 +1,5 @@
 export { alphabetInterval } from './alphabet-interval';
+export { alphabetIntervalHtmlLabel } from './alphabet-interval-html-label';
 export { alphabetIntervalMaxWidth } from './alphabet-interval-max-width';
 export { alphabetIntervalMinWidth } from './alphabet-interval-min-width';
 export { alphabetIntervalMaxWidthTransposed } from './alphabet-interval-max-width-transposed';

site/docs/spec/label/overview.zh.md

@@ -97,6 +97,16 @@ Label 继承 G Text 所有属性样式配置，此外还有 `position`, `selecto
 | backgroundPadding    | 背景框内间距                                     | `number[]` | -      |
 | `background${style}` | 更多背景框样式配置，参考 `RectStyleProps` 属性值 | -          | -      |
 
+数据标签支持使用 HTML 自定义标签，具体配置为：
+
+| 参数                 | 说明                                             | 类型       | 默认值 |
+| -------------------- | ------------------------------------------------ | ---------- | ------ |
+| render               | 返回 HTML string 或者 HTMElement，使用 HTML 自定义复杂标签  | `RenderFunc`   | -      |
+
+```ts
+type RenderFunc = (text: string, datum: object, index: number) => String | HTMLElement;
+```
+
 ## FAQ
 
 ### 支持哪些 position？
@@ -131,6 +141,10 @@ selector 选择器可以对系列数据进行过滤索引。
 }
 ```
 
-### 支持哪些 transform ？
+### 支持哪些 transform？
 
 所有的 transform 有单独具体的文档，具体参考 [Label.transform](/spec/overview#label)。
+
+### 怎么使用 HTML 自定义数据标签？
+
+使用 label 配置手册中的 `render` 即可，具体使用可以参考 [DEMO](/examples/component/label/#htmlLabel)。

site/examples/component/label/demo/contrastReverse.ts

@@ -0,0 +1,32 @@
+import { Chart } from '@antv/g2';
+
+const chart = new Chart({
+  container: 'container',
+  theme: 'classic',
+  autoFit: true,
+});
+
+chart
+  .interval()
+  .data({
+    type: 'fetch',
+    value: 'https://assets.antv.antgroup.com/g2/alphabet.json',
+  })
+  .encode('x', 'letter')
+  .encode('y', 'frequency')
+  .encode('color', 'letter')
+  .label({
+    text: 'frequency',
+    position: 'inside',
+    formatter: '.0%',
+    fill: '#000',
+    transform: [
+      {
+        type: 'contrastReverse',
+        threshold: 21,
+        palette: ['#000', '#fff'], // Use full color string to avoid screenshot error.
+      },
+    ],
+  });
+
+chart.render();

site/examples/component/label/demo/htmlLabel.ts

@@ -0,0 +1,39 @@
+import { Chart } from '@antv/g2';
+
+const chart = new Chart({
+  container: 'container',
+  theme: 'classic',
+  autoFit: true,
+});
+
+const data = [
+  { repo: 'G', star: 918 },
+  { repo: 'G2', star: 11688 },
+  { repo: 'G6', star: 10045 },
+  { repo: 'L7', star: 3125 },
+  { repo: 'F2', star: 7820 },
+  { repo: 'S2', star: 1231 },
+  { repo: 'X6', star: 4755 },
+];
+
+chart
+  .interval()
+  .data(data)
+  .encode('x', 'repo')
+  .encode('y', 'star')
+  .encode('color', 'repo')
+  .label({
+    text: 'star',
+    render: (text, datum) => {
+      return `
+        <div style="left:-50%;top:-20px;position:relative;font-size:14px;">
+          <span>${datum.repo}</span>
+          :
+          <a href="https://github.com/antvis/${datum.repo}" target="_blank">${datum.star}</a>
+        </div>
+      `;
+    },
+  })
+  .legend(false);
+
+chart.render();

site/examples/component/label/demo/meta.json

@@ -0,0 +1,40 @@
+{
+  "title": {
+    "zh": "中文分类",
+    "en": "Category"
+  },
+  "demos": [
+    {
+      "filename": "overlapHide.ts",
+      "title": {
+        "zh": "数据标签碰撞隐藏",
+        "en": "Overlap Hide"
+      },
+      "screenshot": "https://mdn.alipayobjects.com/huamei_qa8qxu/afts/img/A*clZ2SbxuHloAAAAAAAAAAAAADmJ7AQ/original"
+    },
+    {
+      "filename": "overflowHide.ts",
+      "title": {
+        "zh": "数据标签超出隐藏",
+        "en": "Overflow Hide"
+      },
+      "screenshot": "https://mdn.alipayobjects.com/huamei_qa8qxu/afts/img/A*EMy1RqEBmm4AAAAAAAAAAAAADmJ7AQ/original"
+    },
+    {
+      "filename": "contrastReverse.ts",
+      "title": {
+        "zh": "数据标签颜色反转",
+        "en": "Contrast Reverse"
+      },
+      "screenshot": "https://mdn.alipayobjects.com/huamei_qa8qxu/afts/img/A*CUyIT4Bxx9wAAAAAAAAAAAAADmJ7AQ/original"
+    },
+    {
+      "filename": "htmlLabel.ts",
+      "title": {
+        "zh": "HTML 标签",
+        "en": "HTML Label"
+      },
+      "screenshot": "https://mdn.alipayobjects.com/huamei_qa8qxu/afts/img/A*rUexRKH7czsAAAAAAAAAAAAADmJ7AQ/original"
+    }
+  ]
+}

site/examples/component/label/demo/overflowHide.ts

@@ -0,0 +1,27 @@
+import { Chart } from '@antv/g2';
+
+const chart = new Chart({
+  container: 'container',
+  theme: 'classic',
+  width: 800,
+  autoFit: false,
+});
+
+chart
+  .interval()
+  .data({
+    type: 'fetch',
+    value: 'https://assets.antv.antgroup.com/g2/alphabet.json',
+  })
+  .encode('x', 'letter')
+  .encode('y', 'frequency')
+  .encode('color', 'steelblue')
+  .axis('y', { labelFormatter: '.0%' })
+  .label({
+    text: 'frequency',
+    position: 'inside',
+    formatter: '.0%',
+    transform: [{ type: 'overflowHide' }],
+  });
+
+chart.render();

site/examples/component/label/demo/overlapHide.ts

@@ -0,0 +1,26 @@
+import { Chart } from '@antv/g2';
+
+const chart = new Chart({
+  container: 'container',
+  theme: 'classic',
+  autoFit: true,
+});
+
+chart
+  .line()
+  .data({
+    type: 'fetch',
+    value: 'https://assets.antv.antgroup.com/g2/aapl.json',
+  })
+  .encode('x', (d) => new Date(d.date))
+  .encode('y', 'close')
+  .label({
+    text: 'close',
+    transform: [
+      {
+        type: 'overlapHide',
+      },
+    ],
+  });
+
+chart.render();

site/examples/component/label/index.en.md

@@ -0,0 +1,4 @@
+---
+title: Label
+order: 3
+---

site/examples/component/label/index.zh.md

@@ -0,0 +1,4 @@
+---
+title: 数据标签
+order: 3
+---

src/runtime/plot.ts

@@ -1189,6 +1189,7 @@ function createLabelShapeFunction(
       formatter = (d) => `${d}`,
       transform,
       style: abstractStyle,
+      render,
       ...abstractOptions
     } = options;
     const visualOptions = mapObject(
@@ -1197,10 +1198,14 @@ function createLabelShapeFunction(
     );
     const { shape = defaultLabelShape, text, ...style } = visualOptions;
     const f = typeof formatter === 'string' ? format(formatter) : formatter;
-    const value = { ...style, text: f(text, datum, index, abstractData) };
+    const value = {
+      ...style,
+      text: f(text, datum, index, abstractData),
+      datum,
+    };
 
     // Params for create shape.
-    const shapeOptions = { type: `label.${shape}`, ...style };
+    const shapeOptions = { type: `label.${shape}`, render, ...style };
     const shapeFunction = useShape(shapeOptions, shapeContext);
     const defaults = getDefaultsStyle(theme, 'label', shape, 'label');
 

src/runtime/types/theme.ts

@@ -79,6 +79,7 @@ type ComponentTheme = {
   legendContinuous?: any;
   label?: LabelStyleProps;
   innerLabel?: LabelStyleProps;
+  htmlLabel?: any;
   slider?: any;
   scrollbar?: any;
   title?: any; // @todo

src/shape/label/label.ts

@@ -8,7 +8,13 @@ import { Advance } from '../text/advance';
 import { LabelPosition } from './position/default';
 import * as PositionProcessor from './position';
 
-export type LabelOptions = Record<string, any>;
+export type LabelOptions = {
+  /**
+   * Customize label with html string or element.
+   */
+  render: (text: string, datum: any, index: number) => string | HTMLElement;
+  [key: string]: any;
+};
 
 function inferPosition(position: LabelPosition, coordinate: Coordinate) {
   if (position !== undefined) return position;
@@ -27,8 +33,14 @@ function getDefaultStyle(
   // For non-series mark, calc position for label based on
   // position and the bounds of shape.
   const { position } = value;
+  const { render } = options;
   const p = inferPosition(position, coordinate);
-  const t = theme[p === 'inside' ? 'innerLabel' : 'label'];
+  const labelType = render
+    ? 'htmlLabel'
+    : p === 'inside'
+    ? 'innerLabel'
+    : 'label';
+  const t = theme[labelType];
   const v = Object.assign({}, t, value);
   const processor = PositionProcessor[camelCase(p)];
   if (!processor) {
@@ -46,13 +58,15 @@ function getDefaultStyle(
  */
 export const Label: SC<LabelOptions> = (options, context) => {
   const { coordinate, theme } = context;
+  const { render } = options;
   return (points, value) => {
     const {
       text,
       x,
       y,
       transform: specifiedTS = '',
       transformOrigin,
+      className = '',
       ...overrideStyle
     } = value;
     const {
@@ -64,6 +78,11 @@ export const Label: SC<LabelOptions> = (options, context) => {
     return select(new Advance())
       .call(applyStyle, defaultStyle)
       .style('text', `${text}`)
+      .style('className', `${className} g2-label`)
+      .style(
+        'innerHTML',
+        render ? render(text, value.datum, value.index) : undefined,
+      )
       .style(
         'labelTransform',
         `${transform} rotate(${+rotate}) ${specifiedTS}`.trim(),