net.peanuuutz.fork.ui.animation.InfiniteAnimationPolicy.kt Maven / Gradle / Ivy

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/*
 * Copyright 2020 The Android Open Source Project
 * Modifications Copyright 2022 Peanuuutz
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package net.peanuuutz.fork.ui.animation

import androidx.compose.runtime.withFrameNanos
import kotlinx.coroutines.currentCoroutineContext
import kotlin.coroutines.CoroutineContext

interface InfiniteAnimationPolicy : CoroutineContext.Element {
    suspend fun  onInfiniteOperation(block: suspend () -> R): R

    override val key: CoroutineContext.Key<*>
        get() = Key

    companion object Key : CoroutineContext.Key
}

suspend fun  withInfiniteAnimationFrameNanos(onFrame: (frameTimeNanos: Long) -> R): R {
    return when(val policy = currentCoroutineContext()[InfiniteAnimationPolicy]) {
        null -> withFrameNanos(onFrame)
        else -> policy.onInfiniteOperation { withFrameNanos(onFrame) }
    }
}

suspend fun  withInfiniteAnimationFrameMillis(onFrame: (frameTimeMillis: Long) -> R): R {
    return withInfiniteAnimationFrameNanos { frameTimeNanos ->
        onFrame(frameTimeNanos / 1_000_000L)
    }
}