DevExtreme React - Show and Hide a Tooltip
Each series point allows you to show or hide its tooltip programmatically by calling the showTooltip() or hideTooltip() method of the Point object. You can access this object with the API methods or in the handlers of the point events, such as pointClick, pointHoverChanged, etc. The latter is demonstrated in the following code.
jQuery
$(function() { $("#pieChartContainer").dxPieChart({ // ... // Shows the tooltip only when a user clicks a series point onPointClick: function (e) { var point = e.target; point.showTooltip(); }, // Hides the tooltip once the user moves the pointer away from the series point onPointHoverChanged: function (e) { var point = e.target; if (!point.isHovered()) { point.hideTooltip(); } } }); });
Angular
<dx-pie-chart ... (onPointClick)="onPointClick($event)" (onPointHoverChanged)="onPointHoverChanged($event)"> </dx-pie-chart>
import { DxPieChartModule } from "devextreme-angular"; // ... export class AppComponent { // Shows the tooltip only when a user clicks a series point onPointClick (e) { let point = e.target; point.showTooltip(); }, // Hides the tooltip once the user moves the pointer away from the series point onPointHoverChanged (e) { let point = e.target; if (!point.isHovered()) { point.hideTooltip(); } } } @NgModule({ imports: [ // ... DxPieChartModule ], // ... })
You can also hide the tooltip regardless of the point to which it belongs by calling the hideTooltip() method of the PieChart instance.
jQuery
$("#pieChartContainer").dxPieChart("hideTooltip");
Angular
import { ..., ViewChild } from "@angular/core"; import { DxPieChartModule, DxPieChartComponent } from "devextreme-angular"; // ... export class AppComponent { @ViewChild(DxPieChartComponent, { static: false }) pieChart: DxPieChartComponent; // Prior to Angular 8 // @ViewChild(DxPieChartComponent) pieChart: DxPieChartComponent; hideTooltip () { this.pieChart.instance.hideTooltip(); }; } @NgModule({ imports: [ // ... DxPieChartModule ], // ... })
See Also
If you have technical questions, please create a support ticket in the DevExpress Support Center.