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import {interpolate, useAnimatedStyle} from 'react-native-reanimated'
import {useMinimalShellMode} from '#/state/shell/minimal-mode'
import {useShellLayout} from '#/state/shell/shell-layout'
// Keep these separated so that we only pay for useAnimatedStyle that gets used.
export function useMinimalShellHeaderTransform() {
const {headerMode} = useMinimalShellMode()
const {headerHeight} = useShellLayout()
const headerTransform = useAnimatedStyle(() => {
return {
pointerEvents: headerMode.value === 0 ? 'auto' : 'none',
opacity: Math.pow(1 - headerMode.value, 2),
transform: [
{
translateY: interpolate(
headerMode.value,
[0, 1],
[0, -headerHeight.value],
),
},
],
}
})
return headerTransform
}
export function useMinimalShellFooterTransform() {
const {footerMode} = useMinimalShellMode()
const {footerHeight} = useShellLayout()
const footerTransform = useAnimatedStyle(() => {
return {
pointerEvents: footerMode.value === 0 ? 'auto' : 'none',
opacity: Math.pow(1 - footerMode.value, 2),
transform: [
{
translateY: interpolate(
footerMode.value,
[0, 1],
[0, footerHeight.value],
),
},
],
}
})
return footerTransform
}
export function useMinimalShellFabTransform() {
const {footerMode} = useMinimalShellMode()
const fabTransform = useAnimatedStyle(() => {
return {
transform: [
{
translateY: interpolate(footerMode.value, [0, 1], [-44, 0]),
},
],
}
})
return fabTransform
}
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