| /* |
| * 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 |
| |
| import android.os.Handler |
| import android.os.Looper |
| import androidx.compose.runtime.dispatch.AndroidUiDispatcher |
| import kotlinx.coroutines.Dispatchers |
| import kotlin.coroutines.CoroutineContext |
| |
| class AndroidEmbeddingContext : EmbeddingContext { |
| private val handler by lazy { |
| Handler(Looper.getMainLooper()) |
| } |
| |
| override fun isMainThread(): Boolean { |
| return Looper.myLooper() == Looper.getMainLooper() |
| } |
| |
| override fun mainThreadCompositionContext(): CoroutineContext { |
| return MainAndroidUiContext |
| } |
| |
| override fun postOnMainThread(block: () -> Unit) { |
| handler.post(block) |
| } |
| |
| override fun postFrameCallback(callback: ChoreographerFrameCallback) { |
| android.view.Choreographer.getInstance().postFrameCallback(callback) |
| } |
| |
| override fun cancelFrameCallback(callback: ChoreographerFrameCallback) { |
| android.view.Choreographer.getInstance().removeFrameCallback(callback) |
| } |
| } |
| |
| actual fun EmbeddingContext(): EmbeddingContext = AndroidEmbeddingContext() |
| |
| // TODO(b/137794558): Create portable abstraction for scheduling |
| internal actual typealias ChoreographerFrameCallback = android.view.Choreographer.FrameCallback |
| |
| // TODO: Our host-side tests still grab the Android actuals based on SDK stubs that return null. |
| // Satisfy their dependencies. |
| private val MainAndroidUiContext: CoroutineContext by lazy { |
| if (Looper.getMainLooper() != null) AndroidUiDispatcher.Main |
| else Dispatchers.Main |
| } |
| |
| internal actual object Trace { |
| actual fun beginSection(name: String) = android.os.Trace.beginSection(name) |
| actual fun endSection() = android.os.Trace.endSection() |
| } |
| |
| internal actual typealias MainThread = androidx.annotation.MainThread |
| |
| internal actual typealias CheckResult = androidx.annotation.CheckResult |