WindowControlsOverlay: geometrychange event
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
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.
addEventListener("geometrychange", (event) => { })
ongeometrychange = (event) => { }
Event type
A WindowControlsOverlayGeometryChangeEvent. Inherits from Event.
Event properties
In addition to the properties listed below, properties from the parent interface, Event, are available.
titlebarAreaRect-
A
DOMRectrepresenting 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():
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:
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
| Specification |
|---|
| Window Controls Overlay # the-ongeometrychange-attribute |
Browser compatibility
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geometrychange event
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Legend
Tip: you can click/tap on a cell for more information.
- Full support
- Full support
- No support
- No support
- Experimental. Expect behavior to change in the future.