1 /* 2 * Copyright (C) 2023 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.systemui.fold.ui.composable 18 19 import androidx.compose.runtime.Composable 20 import androidx.compose.runtime.State 21 import androidx.compose.runtime.getValue 22 import androidx.compose.runtime.produceState 23 import androidx.compose.runtime.remember 24 import androidx.compose.ui.platform.LocalContext 25 import androidx.lifecycle.compose.collectAsStateWithLifecycle 26 import androidx.window.layout.WindowInfoTracker 27 import com.android.systemui.fold.ui.helper.FoldPosture 28 import com.android.systemui.fold.ui.helper.foldPostureInternal 29 30 /** Returns the [FoldPosture] of the device currently. */ 31 @Composable foldPosturenull32fun foldPosture(): State<FoldPosture> { 33 val context = LocalContext.current 34 val infoTracker = remember(context) { WindowInfoTracker.getOrCreate(context) } 35 val layoutInfo by 36 infoTracker.windowLayoutInfo(context).collectAsStateWithLifecycle(initialValue = null) 37 38 return produceState<FoldPosture>( 39 initialValue = FoldPosture.Folded, 40 key1 = layoutInfo, 41 ) { 42 value = foldPostureInternal(layoutInfo) 43 } 44 } 45