[android-components](../../../index.md) / [mozilla.components.feature.readerview.view](../../index.md) / [ReaderViewControlsView](../index.md) / [Listener](index.md) / [onFontChanged](./on-font-changed.md)

# onFontChanged

`abstract fun onFontChanged(font: `[`FontType`](../../../mozilla.components.feature.readerview/-reader-view-feature/-font-type/index.md)`): `[`Unit`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) [(source)](https://github.com/mozilla-mobile/android-components/blob/master/components/feature/readerview/src/main/java/mozilla/components/feature/readerview/view/ReaderViewControlsView.kt#L58)