| /* |
| * 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.layout.test |
| |
| import androidx.test.filters.SmallTest |
| import androidx.ui.core.OnChildPositioned |
| import androidx.ui.core.PxPosition |
| import androidx.ui.core.PxSize |
| import androidx.ui.core.Ref |
| import androidx.ui.core.dp |
| import androidx.ui.core.px |
| import androidx.ui.core.withDensity |
| import androidx.ui.layout.Align |
| import androidx.ui.layout.ConstrainedBox |
| import androidx.ui.layout.Container |
| import androidx.ui.layout.DpConstraints |
| import androidx.ui.layout.Wrap |
| import androidx.compose.Composable |
| import androidx.ui.core.Alignment |
| import androidx.ui.core.Constraints |
| import androidx.ui.core.IntPx |
| import androidx.ui.core.Layout |
| import androidx.ui.core.OnPositioned |
| import androidx.ui.core.enforce |
| import androidx.ui.layout.LayoutAlign |
| import androidx.ui.layout.LayoutAspectRatio |
| import androidx.ui.layout.LayoutSize |
| import androidx.ui.layout.LayoutWrapped |
| import org.junit.Test |
| import org.junit.runner.RunWith |
| import org.junit.runners.JUnit4 |
| import java.util.concurrent.CountDownLatch |
| import java.util.concurrent.TimeUnit |
| |
| @SmallTest |
| @RunWith(JUnit4::class) |
| class WrapTest : LayoutTest() { |
| @Test |
| fun testWrap() = withDensity(density) { |
| val sizeDp = 50.dp |
| val size = sizeDp.toIntPx() |
| |
| val positionedLatch = CountDownLatch(2) |
| val wrapSize = Ref<PxSize>() |
| val childSize = Ref<PxSize>() |
| val childPosition = Ref<PxPosition>() |
| show { |
| Align(alignment = Alignment.TopLeft) { |
| OnChildPositioned(onPositioned = { coordinates -> |
| wrapSize.value = coordinates.size |
| positionedLatch.countDown() |
| }) { |
| Wrap { |
| Container(width = sizeDp, height = sizeDp) { |
| SaveLayoutInfo( |
| size = childSize, |
| position = childPosition, |
| positionedLatch = positionedLatch |
| ) |
| } |
| } |
| } |
| } |
| } |
| positionedLatch.await(1, TimeUnit.SECONDS) |
| |
| assertEquals(PxSize(size, size), wrapSize.value) |
| assertEquals(PxSize(size, size), childSize.value) |
| assertEquals(PxPosition(0.px, 0.px), childPosition.value) |
| } |
| |
| @Test |
| fun testWrappedModifier() = withDensity(density) { |
| val sizeDp = 50.dp |
| val size = sizeDp.toIntPx() |
| |
| val positionedLatch = CountDownLatch(2) |
| val wrapSize = Ref<PxSize>() |
| show { |
| Container(LayoutWrapped) { |
| OnPositioned(onPositioned = { coordinates -> |
| wrapSize.value = coordinates.size |
| positionedLatch.countDown() |
| }) |
| Container(LayoutSize(sizeDp, sizeDp)) { } |
| } |
| } |
| positionedLatch.await(1, TimeUnit.SECONDS) |
| |
| assertEquals(PxSize(size, size), wrapSize.value) |
| } |
| |
| @Test |
| fun testWrap_respectsMinConstraints() = withDensity(density) { |
| val sizeDp = 50.dp |
| val size = sizeDp.toIntPx() |
| val doubleSizeDp = sizeDp * 2 |
| val doubleSize = doubleSizeDp.toIntPx() |
| |
| val positionedLatch = CountDownLatch(2) |
| val wrapSize = Ref<PxSize>() |
| val childSize = Ref<PxSize>() |
| val childPosition = Ref<PxPosition>() |
| show { |
| Align(alignment = Alignment.TopLeft) { |
| OnChildPositioned(onPositioned = { coordinates -> |
| wrapSize.value = coordinates.size |
| positionedLatch.countDown() |
| }) { |
| val constraints = |
| DpConstraints(minWidth = doubleSizeDp, minHeight = doubleSizeDp) |
| ConstrainedBox(constraints = constraints) { |
| Wrap { |
| Container(width = sizeDp, height = sizeDp) { |
| SaveLayoutInfo( |
| size = childSize, |
| position = childPosition, |
| positionedLatch = positionedLatch |
| ) |
| } |
| } |
| } |
| } |
| } |
| } |
| positionedLatch.await(1, TimeUnit.SECONDS) |
| |
| assertEquals(PxSize(doubleSize, doubleSize), wrapSize.value) |
| assertEquals(PxSize(size, size), childSize.value) |
| assertEquals(PxPosition(0.px, 0.px), childPosition.value) |
| } |
| |
| @Test |
| fun testWrappedModifier_respectsMinConstraints() = withDensity(density) { |
| val sizeDp = 50.dp |
| val size = sizeDp.toIntPx() |
| val doubleSizeDp = sizeDp * 2 |
| val doubleSize = doubleSizeDp.toIntPx() |
| |
| val positionedLatch = CountDownLatch(2) |
| val wrapSize = Ref<PxSize>() |
| val childSize = Ref<PxSize>() |
| val childPosition = Ref<PxPosition>() |
| show { |
| Container(LayoutAlign.TopLeft) { |
| OnChildPositioned(onPositioned = { coordinates -> |
| wrapSize.value = coordinates.size |
| positionedLatch.countDown() |
| }) { |
| Layout( |
| children = { |
| Container(LayoutWrapped wraps LayoutSize(sizeDp, sizeDp)) { |
| SaveLayoutInfo( |
| size = childSize, |
| position = childPosition, |
| positionedLatch = positionedLatch |
| ) |
| } |
| }, |
| measureBlock = { measurables, incomingConstraints -> |
| val measurable = measurables.first() |
| val constraints = Constraints( |
| minWidth = doubleSizeDp.toIntPx(), |
| minHeight = doubleSizeDp.toIntPx() |
| ).enforce(incomingConstraints) |
| val placeable = measurable.measure(constraints) |
| layout(placeable.width, placeable.height) { |
| placeable.place(PxPosition.Origin) |
| } |
| } |
| ) |
| } |
| } |
| } |
| positionedLatch.await(1, TimeUnit.SECONDS) |
| |
| assertEquals(PxSize(doubleSize, doubleSize), wrapSize.value) |
| assertEquals(PxSize(size, size), childSize.value) |
| assertEquals( |
| PxPosition((doubleSize - size) / 2, (doubleSize - size) / 2), |
| childPosition.value |
| ) |
| } |
| |
| @Test |
| fun testWrap_respectsMinConstraintsAndAlignment() = withDensity(density) { |
| val sizeDp = 50.dp |
| val size = sizeDp.toIntPx() |
| val doubleSizeDp = sizeDp * 2 |
| val doubleSize = doubleSizeDp.toIntPx() |
| |
| val positionedLatch = CountDownLatch(2) |
| val wrapSize = Ref<PxSize>() |
| val childSize = Ref<PxSize>() |
| val childPosition = Ref<PxPosition>() |
| show { |
| Align(alignment = Alignment.TopLeft) { |
| OnChildPositioned(onPositioned = { coordinates -> |
| wrapSize.value = coordinates.size |
| positionedLatch.countDown() |
| }) { |
| val constraints = DpConstraints( |
| minWidth = doubleSizeDp, |
| minHeight = doubleSizeDp |
| ) |
| ConstrainedBox(constraints = constraints) { |
| Wrap(alignment = Alignment.Center) { |
| Container(width = sizeDp, height = sizeDp) { |
| SaveLayoutInfo( |
| size = childSize, |
| position = childPosition, |
| positionedLatch = positionedLatch |
| ) |
| } |
| } |
| } |
| } |
| } |
| } |
| positionedLatch.await(1, TimeUnit.SECONDS) |
| |
| assertEquals(PxSize(doubleSize, doubleSize), wrapSize.value) |
| assertEquals(PxSize(size, size), childSize.value) |
| assertEquals(PxPosition(size / 2, size / 2), childPosition.value) |
| } |
| |
| @Test |
| fun testWrap_hasCorrectIntrinsicMeasurements() = withDensity(density) { |
| testIntrinsics(@Composable { |
| Wrap { |
| Container(modifier = LayoutAspectRatio(2f)) { } |
| } |
| }) { minIntrinsicWidth, minIntrinsicHeight, maxIntrinsicWidth, maxIntrinsicHeight -> |
| // Min width. |
| assertEquals(25.dp.toIntPx() * 2, minIntrinsicWidth(25.dp.toIntPx())) |
| assertEquals(0.dp.toIntPx(), minIntrinsicWidth(IntPx.Infinity)) |
| // Min height. |
| assertEquals(50.dp.toIntPx() / 2, minIntrinsicHeight(50.dp.toIntPx())) |
| assertEquals(0.dp.toIntPx(), minIntrinsicHeight(IntPx.Infinity)) |
| // Max width. |
| assertEquals(25.dp.toIntPx() * 2, maxIntrinsicWidth(25.dp.toIntPx())) |
| assertEquals(0.dp.toIntPx(), maxIntrinsicWidth(IntPx.Infinity)) |
| // Max height. |
| assertEquals(50.dp.toIntPx() / 2, maxIntrinsicHeight(50.dp.toIntPx())) |
| assertEquals(0.dp.toIntPx(), maxIntrinsicHeight(IntPx.Infinity)) |
| } |
| } |
| |
| @Test |
| fun testWrappedModifier_hasCorrectIntrinsicMeasurements() = withDensity(density) { |
| testIntrinsics(@Composable { |
| Container(modifier = LayoutAspectRatio(2f) wraps LayoutWrapped) { } |
| }) { minIntrinsicWidth, minIntrinsicHeight, maxIntrinsicWidth, maxIntrinsicHeight -> |
| // Min width. |
| assertEquals(25.dp.toIntPx() * 2, minIntrinsicWidth(25.dp.toIntPx())) |
| assertEquals(0.dp.toIntPx(), minIntrinsicWidth(IntPx.Infinity)) |
| // Min height. |
| assertEquals(50.dp.toIntPx() / 2, minIntrinsicHeight(50.dp.toIntPx())) |
| assertEquals(0.dp.toIntPx(), minIntrinsicHeight(IntPx.Infinity)) |
| // Max width. |
| assertEquals(25.dp.toIntPx() * 2, maxIntrinsicWidth(25.dp.toIntPx())) |
| assertEquals(0.dp.toIntPx(), maxIntrinsicWidth(IntPx.Infinity)) |
| // Max height. |
| assertEquals(50.dp.toIntPx() / 2, maxIntrinsicHeight(50.dp.toIntPx())) |
| assertEquals(0.dp.toIntPx(), maxIntrinsicHeight(IntPx.Infinity)) |
| } |
| } |
| |
| @Test |
| fun testWrap_hasCorrectIntrinsicMeasurements_whenNoChildren() = withDensity(density) { |
| testIntrinsics(@Composable { |
| Wrap { } |
| }) { minIntrinsicWidth, minIntrinsicHeight, maxIntrinsicWidth, maxIntrinsicHeight -> |
| // Min width. |
| assertEquals(0.dp.toIntPx(), minIntrinsicWidth(25.dp.toIntPx())) |
| // Min height. |
| assertEquals(0.dp.toIntPx(), minIntrinsicHeight(25.dp.toIntPx())) |
| // Max width. |
| assertEquals(0.dp.toIntPx(), maxIntrinsicWidth(25.dp.toIntPx())) |
| // Max height. |
| assertEquals(0.dp.toIntPx(), maxIntrinsicHeight(25.dp.toIntPx())) |
| } |
| } |
| } |