# ion-ripple-effect

The ripple effect component adds the [Material Design ink ripple interaction effect](https://material.io/develop/web/components/ripples/). This component can only be used inside of an `<ion-app>` and can be added to any component.

It's important to note that the parent should have [relative positioning](https://developer.mozilla.org/en-US/docs/Web/CSS/position) because the ripple effect is absolutely positioned and will cover the closest parent with relative positioning. The parent element should also be given the `ion-activatable` class, which tells the ripple effect that the element is clickable. It's recommended to add `overflow: hidden` to the parent element, as well, to avoid the ripple overflowing its container.

The default type, `"bounded"`, will expand the ripple effect from the click position outwards. To add a ripple effect that always starts in the center of the element and expands in a circle, add an `"unbounded"` type.

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## Usage

### Angular / javascript

```html
<ion-app>
  <ion-content>
    <div class="ion-activatable">
      A plain div with a bounded ripple effect
      <ion-ripple-effect></ion-ripple-effect>
    </div>

    <button class="ion-activatable">
      A button with a bounded ripple effect
      <ion-ripple-effect></ion-ripple-effect>
    </button>

    <div class="ion-activatable">
      A plain div with an unbounded ripple effect
      <ion-ripple-effect type="unbounded"></ion-ripple-effect>
    </div>

    <button class="ion-activatable">
      A button with an unbounded ripple effect
      <ion-ripple-effect type="unbounded"></ion-ripple-effect>
    </button>
  </ion-content>
</ion-app>
```

```css
.ion-activatable {
  position: relative;
  overflow: hidden;
}
```


### React

```tsx
import React from 'react';
import { IonApp, IonContent, IonRippleEffect } from '@ionic/react';
import './RippleEffectExample.css';

export const RippleExample: React.FC = () => (
  <IonApp>
   <IonContent>
      <div className="ion-activatable">
        A plain div with a bounded ripple effect
        <IonRippleEffect></IonRippleEffect>
      </div>

      <button className="ion-activatable">
        A button with a bounded ripple effect
        <IonRippleEffect></IonRippleEffect>
      </button>

      <div className="ion-activatable">
        A plain div with an unbounded ripple effect
        <IonRippleEffect type="unbounded"></IonRippleEffect>
      </div>

      <button className="ion-activatable">
        A button with an unbounded ripple effect
        <IonRippleEffect type="unbounded"></IonRippleEffect>
      </button>
    </IonContent>
  </IonApp>
);
```

```css
.ion-activatable {
  position: relative;
  overflow: hidden;
}
```


### Vue

```html
<template>
  <ion-app>
    <ion-content>
      <div class="ion-activatable">
        A plain div with a bounded ripple effect
        <ion-ripple-effect></ion-ripple-effect>
      </div>

      <button class="ion-activatable">
        A button with a bounded ripple effect
        <ion-ripple-effect></ion-ripple-effect>
      </button>

      <div class="ion-activatable">
        A plain div with an unbounded ripple effect
        <ion-ripple-effect type="unbounded"></ion-ripple-effect>
      </div>

      <button class="ion-activatable">
        A button with an unbounded ripple effect
        <ion-ripple-effect type="unbounded"></ion-ripple-effect>
      </button>
    </ion-content>
  </ion-app>
</template>

<style>
  .ion-activatable {
    position: relative;
    overflow: hidden;
  }
</style>
```



## Properties

| Property | Attribute | Description                                                                                                                                                                                                                                                                                                                                                         | Type                       | Default     |
| -------- | --------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------- | ----------- |
| `type`   | `type`    | Sets the type of ripple-effect:  - `bounded`: the ripple effect expands from the user's click position - `unbounded`: the ripple effect expands from the center of the button and overflows the container.  NOTE: Surfaces for bounded ripples should have the overflow property set to hidden, while surfaces for unbounded ripples should have it set to visible. | `"bounded" \| "unbounded"` | `'bounded'` |


## Methods

### `addRipple(x: number, y: number) => Promise<() => void>`

Adds the ripple effect to the parent element.

#### Returns

Type: `Promise<() => void>`




## Dependencies

### Used by

 - [ion-action-sheet](../action-sheet)
 - [ion-alert](../alert)
 - [ion-back-button](../back-button)
 - [ion-button](../button)
 - [ion-card](../card)
 - [ion-chip](../chip)
 - [ion-fab-button](../fab-button)
 - [ion-item](../item)
 - [ion-item-option](../item-option)
 - [ion-menu-button](../menu-button)
 - [ion-segment-button](../segment-button)
 - [ion-tab-button](../tab-button)
 - [ion-toast](../toast)

### Graph
```mermaid
graph TD;
  ion-action-sheet --> ion-ripple-effect
  ion-alert --> ion-ripple-effect
  ion-back-button --> ion-ripple-effect
  ion-button --> ion-ripple-effect
  ion-card --> ion-ripple-effect
  ion-chip --> ion-ripple-effect
  ion-fab-button --> ion-ripple-effect
  ion-item --> ion-ripple-effect
  ion-item-option --> ion-ripple-effect
  ion-menu-button --> ion-ripple-effect
  ion-segment-button --> ion-ripple-effect
  ion-tab-button --> ion-ripple-effect
  ion-toast --> ion-ripple-effect
  style ion-ripple-effect fill:#f9f,stroke:#333,stroke-width:4px
```

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