fix(tooltip): multi chart when mounting to body

__tests__/integration/api-chart-tooltip-multi-chart.spec.ts

@@ -0,0 +1,29 @@
+import { chartTooltipMultiChart as render } from '../plots/api/chart-tooltip-multi-chart';
+import { dispatchFirstElementEvent } from './utils/event';
+import './utils/useSnapshotMatchers';
+import { createDOMGCanvas } from './utils/createDOMGCanvas';
+
+describe('chart.interaction.tooltip', () => {
+  const canvas1 = createDOMGCanvas(640, 480);
+  const canvas2 = createDOMGCanvas(640, 480);
+
+  it('tooltip should not be shared if mount to body.', async () => {
+    const { finished0, finished1 } = render({
+      canvas1,
+      canvas2,
+      container: document.createElement('div'),
+    });
+    await Promise.all([finished0, finished1]);
+
+    dispatchFirstElementEvent(canvas1, 'pointerover');
+    dispatchFirstElementEvent(canvas2, 'pointerover');
+    expect(
+      Array.from(document.body.getElementsByClassName('g2-tooltip')).length,
+    ).toBe(2);
+  });
+
+  afterAll(() => {
+    canvas1?.destroy();
+    canvas2?.destroy();
+  });
+});

__tests__/plots/api/chart-tooltip-multi-chart.ts

@@ -0,0 +1,51 @@
+import { Chart } from '../../../src';
+
+export function chartTooltipMultiChart(context) {
+  const { container, canvas1, canvas2 } = context;
+
+  const options = {
+    type: 'interval',
+    data: [
+      { genre: 'Sports', sold: 275 },
+      { genre: 'Strategy', sold: 115 },
+      { genre: 'Action', sold: 120 },
+      { genre: 'Shooter', sold: 350 },
+      { genre: 'Other', sold: 150 },
+    ],
+    encode: {
+      x: 'genre',
+      y: 'sold',
+    },
+    interaction: { tooltip: { mount: 'body' } },
+  };
+
+  // View0
+  const view0Container = document.createElement('div');
+  container.appendChild(view0Container);
+
+  const view0 = new Chart({
+    theme: 'classic',
+    container: view0Container,
+    canvas: canvas1,
+  });
+
+  view0.options(options);
+
+  const finished0 = view0.render();
+
+  // View1.
+  const view1Container = document.createElement('div');
+  container.appendChild(view1Container);
+
+  const view1 = new Chart({
+    theme: 'classic',
+    container: view1Container,
+    canvas: canvas2,
+  });
+
+  view1.options(options);
+
+  const finished1 = view1.render();
+
+  return { finished0, finished1 };
+}

__tests__/plots/api/index.ts

@@ -38,3 +38,4 @@ export { chartOptionsCompositeMark } from './chart-options-composite-mark';
 export { chartEmitItemTooltipHideContent } from './chart-emit-item-tooltip-hide-content';
 export { chartEmitClickTooltip } from './chart-emit-click-tooltip';
 export { chartChangeDataLegend } from './chart-change-data-legend';
+export { chartTooltipMultiChart } from './chart-tooltip-multi-chart';

src/interaction/tooltip.ts

@@ -106,9 +106,12 @@ function showTooltip({
   mount,
   bounding,
 }) {
-  // All the views share the same tooltip.
   const canvasContainer = root.getRootNode().defaultView.getConfig().container;
-  const container = single ? getContainer(root, mount) : root;
+  const container = getContainer(root, mount);
+
+  // All the views share the same tooltip.
+  const parent = single ? canvasContainer : root;
+
   const b = bounding || getBounding(root);
   const containerOffset = getContainerOffset(canvasContainer, container);
   const {
@@ -121,7 +124,7 @@ function showTooltip({
       b,
       containerOffset,
     ),
-  } = container;
+  } = parent as any;
   const { items, title = '' } = data;
   tooltipElement.update({
     x,
@@ -134,15 +137,16 @@ function showTooltip({
       content: render(event, { items, title }),
     }),
   });
-  container.tooltipElement = tooltipElement;
+  parent.tooltipElement = tooltipElement;
 }
 
 function hideTooltip({ root, single, emitter, nativeEvent = true, mount }) {
   if (nativeEvent) {
     emitter.emit('tooltip:hide', { nativeEvent });
   }
-  const container = single ? getContainer(root, mount) : root;
-  const { tooltipElement } = container;
+  const canvasContainer = root.getRootNode().defaultView.getConfig().container;
+  const parent = single ? canvasContainer : root;
+  const { tooltipElement } = parent;
   if (tooltipElement) {
     tooltipElement.hide();
   }