compose/runtime/runtime/src/desktopMain/kotlin/androidx/compose/runtime/ActualDesktop.desktop.kt

/*
 * Copyright 2019 The Android Open Source Project
 *
 * 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 androidx.compose.runtime

import kotlinx.coroutines.delay

@Deprecated(
    "MonotonicFrameClocks are not globally applicable across platforms. " +
        "Use an appropriate local clock."
)
public actual val DefaultMonotonicFrameClock: MonotonicFrameClock
    get() = SixtyFpsMonotonicFrameClock

private object SixtyFpsMonotonicFrameClock : MonotonicFrameClock {
    private const val fps = 60

    override suspend fun <R> withFrameNanos(onFrame: (Long) -> R): R {
        delay(1000L / fps)
        return onFrame(System.nanoTime())
    }
}