| /* |
| * 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.ui.core |
| |
| import androidx.compose.Composable |
| import androidx.compose.MutableState |
| import androidx.compose.State |
| import androidx.compose.state |
| import androidx.test.filters.LargeTest |
| import androidx.ui.benchmark.ComposeBenchmarkRule |
| import androidx.ui.benchmark.toggleStateBenchmarkComposeMeasureLayout |
| import androidx.ui.benchmark.toggleStateBenchmarkMeasureLayout |
| import androidx.compose.foundation.Box |
| import androidx.compose.foundation.ContentGravity |
| import androidx.ui.integration.test.ToggleableTestCase |
| import androidx.compose.foundation.layout.Spacer |
| import androidx.compose.foundation.layout.fillMaxSize |
| import androidx.compose.foundation.layout.preferredSize |
| import androidx.compose.ui.unit.Constraints |
| import androidx.ui.test.ComposeTestCase |
| import androidx.compose.ui.unit.Dp |
| import androidx.compose.ui.unit.LayoutDirection |
| import androidx.compose.ui.unit.dp |
| import org.junit.Rule |
| import org.junit.Test |
| import org.junit.runner.RunWith |
| import org.junit.runners.JUnit4 |
| |
| @LargeTest |
| @RunWith(JUnit4::class) |
| class WithConstraintsBenchmark { |
| |
| @get:Rule |
| val benchmarkRule = ComposeBenchmarkRule() |
| |
| @Test |
| fun no_withconstraints_inner_recompose() { |
| benchmarkRule.toggleStateBenchmarkComposeMeasureLayout { NoWithConstraintsTestCase() } |
| } |
| |
| @Test |
| fun withconstraints_inner_recompose() { |
| benchmarkRule.toggleStateBenchmarkComposeMeasureLayout { WithConstraintsTestCase() } |
| } |
| |
| @Test |
| fun withconstraints_changing_constraints() { |
| benchmarkRule.toggleStateBenchmarkMeasureLayout { ChangingConstraintsTestCase() } |
| } |
| } |
| |
| private class NoWithConstraintsTestCase : ComposeTestCase, ToggleableTestCase { |
| |
| private lateinit var state: MutableState<Dp> |
| |
| @Composable |
| override fun emitContent() { |
| val size = state { 200.dp } |
| this.state = size |
| Box(Modifier.preferredSize(300.dp), gravity = ContentGravity.Center) { |
| Spacer(Modifier.preferredSize(width = size.value, height = size.value)) |
| } |
| } |
| |
| override fun toggleState() { |
| state.value = if (state.value == 200.dp) 150.dp else 200.dp |
| } |
| } |
| |
| private class WithConstraintsTestCase : ComposeTestCase, ToggleableTestCase { |
| |
| private lateinit var state: MutableState<Dp> |
| |
| @Composable |
| override fun emitContent() { |
| val size = state { 200.dp } |
| this.state = size |
| WithConstraints { |
| Box(Modifier.preferredSize(300.dp), gravity = ContentGravity.Center) { |
| Spacer(Modifier.preferredSize(width = size.value, height = size.value)) |
| } |
| } |
| } |
| |
| override fun toggleState() { |
| state.value = if (state.value == 200.dp) 150.dp else 200.dp |
| } |
| } |
| |
| private class ChangingConstraintsTestCase : ComposeTestCase, ToggleableTestCase { |
| |
| private lateinit var state: MutableState<Int> |
| |
| @Composable |
| override fun emitContent() { |
| val size = state { 100 } |
| this.state = size |
| ChangingConstraintsLayout(state) { |
| WithConstraints { |
| Box(Modifier.fillMaxSize()) |
| } |
| } |
| } |
| |
| override fun toggleState() { |
| state.value = if (state.value == 100) 50 else 100 |
| } |
| } |
| |
| @Composable |
| private fun ChangingConstraintsLayout(size: State<Int>, children: @Composable () -> Unit) { |
| Layout(children) { measurables, _ -> |
| val constraints = Constraints.fixed(size.value, size.value) |
| with(PlacementScope) { measurables.first().measure(constraints).place(0, 0) } |
| layout(100, 100) {} |
| } |
| } |
| |
| private object PlacementScope : Placeable.PlacementScope() { |
| override val parentWidth = 0 |
| override val parentLayoutDirection = LayoutDirection.Ltr |
| } |