useDevicePixelRatio

类别

导出体积

294 B

上次更改

2 minutes ago

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.

示例

源码

设备像素比：

pixelRatio: 1

放大和缩小（或将窗口移动到具有不同缩放因子的屏幕）以查看值的变化

Usage

import { useDevicePixelRatio } from '@vueuse/core'

export default {
  setup() {
    const { pixelRatio } = useDevicePixelRatio()

    return { pixelRatio }
  },
}

Component Usage

This function also provides a renderless component version via the @vueuse/components package. Learn more about the usage.

vue

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

类型声明

typescript

/**
 * 响应式跟踪 `window.devicePixelRatio`.
 *
 * @see https://vueuse.org/useDevicePixelRatio
 */
export declare function useDevicePixelRatio(options?: ConfigurableWindow): {
  pixelRatio: Ref<number, number>
}
export type UseDevicePixelRatioReturn = ReturnType<typeof useDevicePixelRatio>