WindowControlsOverlay: geometrychange event
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
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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 addEventListener():
addEventListener("geometrychange", (event) => { })
Alternatively, assign to the event handler property of the interface:
ongeometrychange = (event) => { }
Event type
A WindowControlsOverlayGeometryChangeEvent. Inherits from Event.
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 (but note that this replaces other event listeners added using ongeometrychange, if any):
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 |