Magisk/app/src/main/java/com/topjohnwu/magisk/utils/MotionRevealHelper.kt
2020-01-13 22:01:46 +08:00

85 lines
3.1 KiB
Kotlin

package com.topjohnwu.magisk.utils
import android.animation.Animator
import android.animation.AnimatorSet
import android.animation.ObjectAnimator
import android.view.View
import androidx.core.animation.addListener
import androidx.core.text.layoutDirection
import androidx.core.view.isInvisible
import androidx.core.view.isVisible
import androidx.core.view.marginBottom
import androidx.core.view.marginEnd
import androidx.interpolator.view.animation.FastOutSlowInInterpolator
import com.google.android.material.circularreveal.CircularRevealCompat
import com.google.android.material.circularreveal.CircularRevealWidget
import com.google.android.material.floatingactionbutton.FloatingActionButton
import com.topjohnwu.magisk.core.utils.currentLocale
import kotlin.math.hypot
object MotionRevealHelper {
fun <CV> withViews(
revealable: CV,
fab: FloatingActionButton,
expanded: Boolean
) where CV : CircularRevealWidget, CV : View {
revealable.revealInfo = revealable.createRevealInfo(!expanded)
val revealInfo = revealable.createRevealInfo(expanded)
val revealAnim = revealable.createRevealAnim(revealInfo)
val moveAnim = fab.createMoveAnim(revealInfo)
AnimatorSet().also {
if (expanded) {
it.play(revealAnim).after(moveAnim)
} else {
it.play(moveAnim).after(revealAnim)
}
}.start()
}
private fun <CV> CV.createRevealAnim(
revealInfo: CircularRevealWidget.RevealInfo
): Animator where CV : CircularRevealWidget, CV : View =
CircularRevealCompat.createCircularReveal(
this,
revealInfo.centerX,
revealInfo.centerY,
revealInfo.radius
).apply {
addListener(onStart = {
isVisible = true
}, onEnd = {
if (revealInfo.radius == 0f) {
isInvisible = true
}
})
}
private fun FloatingActionButton.createMoveAnim(
revealInfo: CircularRevealWidget.RevealInfo
): Animator = AnimatorSet().also {
it.interpolator = FastOutSlowInInterpolator()
it.addListener(onStart = { show() }, onEnd = { if (revealInfo.radius != 0f) hide() })
val rtlMod = if (currentLocale.layoutDirection == View.LAYOUT_DIRECTION_RTL) 1f else -1f
val maxX = revealInfo.centerX - marginEnd - measuredWidth / 2f
val targetX = if (revealInfo.radius == 0f) 0f else maxX * rtlMod
val moveX = ObjectAnimator.ofFloat(this, View.TRANSLATION_X, targetX)
val maxY = revealInfo.centerY - marginBottom - measuredHeight / 2f
val targetY = if (revealInfo.radius == 0f) 0f else -maxY
val moveY = ObjectAnimator.ofFloat(this, View.TRANSLATION_Y, targetY)
it.playTogether(moveX, moveY)
}
private fun View.createRevealInfo(expanded: Boolean): CircularRevealWidget.RevealInfo {
val cX = measuredWidth / 2f
val cY = measuredHeight / 2f - paddingBottom
return CircularRevealWidget.RevealInfo(cX, cY, if (expanded) hypot(cX, cY) else 0f)
}
}