1 /* <lambda>null2 * Copyright (C) 2024 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.compose.modifiers 18 19 import androidx.compose.ui.Modifier 20 import androidx.compose.ui.layout.layout 21 import androidx.compose.ui.unit.IntOffset 22 import com.android.app.tracing.traceSection 23 24 /** Adds perfetto markers for the measure + layout stages. */ 25 inline fun Modifier.measureTracer(crossinline traceNameProducer: () -> String): Modifier { 26 return layout { measurable, constraints -> 27 traceSection(traceNameProducer) { 28 val placeable = measurable.measure(constraints) 29 layout(placeable.width, placeable.height) { placeable.placeRelative(IntOffset.Zero) } 30 } 31 } 32 } 33