Road_roller/.claude/skills/vueuse-functions/references/useDevicePixelRatio.md

category

category
Sensors

useDevicePixelRatio

Reactively track window.devicePixelRatio

NOTE: there is no event listener for window.devicePixelRatio change. So this function uses Testing media queries programmatically (window.matchMedia) applying the same mechanism as described in this example.

Usage

import { useDevicePixelRatio } from '@vueuse/core'

const { pixelRatio } = useDevicePixelRatio()

Component Usage

<template>
  <UseDevicePixelRatio v-slot="{ pixelRatio }">
    Pixel Ratio: {{ pixelRatio }}
  </UseDevicePixelRatio>
</template>

Type Declarations

/**
 * Reactively track `window.devicePixelRatio`.
 *
 * @see https://vueuse.org/useDevicePixelRatio
 *
 * @__NO_SIDE_EFFECTS__
 */
export declare function useDevicePixelRatio(options?: ConfigurableWindow): {
  pixelRatio: Readonly<Ref<number, number>>
  stop: WatchStopHandle
}
export type UseDevicePixelRatioReturn = ReturnType<typeof useDevicePixelRatio>