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WindowControlsOverlay: geometrychange event

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The geometrychange event is fired when the position, size, or visibility of a Progressive Web App's title bar area changes.

This only applies to Progressive Web Apps installed on desktop operating systems and use the Window Controls Overlay API.

Syntax

Use the event name in methods like addEventListener(), or set an event handler property.

js

addEventListener("geometrychange", (event) => {});

ongeometrychange = (event) => {};

Event type

Event properties

In addition to the properties listed below, properties from the parent interface, Event, are available.

titlebarAreaRect

A DOMRect representing the position and size of the title bar area within the app's content.

visible

A Boolean that indicates whether the window controls overlay is visible or not.

Examples

Using addEventListener():

js

navigator.windowControlsOverlay.addEventListener("geometrychange", (event) => {
  const { x, y, width, height } = event.titlebarAreaRect;
  console.log(
    `The titlebar area coordinates are x:${x}, y:${y}, width:${width}, height:${height}`,
  );
});

Using the ongeometrychange event handler property:

js

navigator.windowControlsOverlay.ongeometrychange = (event) => {
  const { x, y, width, height } = event.titlebarAreaRect;
  console.log(
    `The titlebar area coordinates are x:${x}, y:${y}, width:${width}, height:${height}`,
  );
};

Specifications

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
geometrychange_event 105 105 No No 91 No No No No No No No

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https://developer.mozilla.org/en-US/docs/Web/API/WindowControlsOverlay/geometrychange_event