| /* |
| * 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.compose.Composable |
| import androidx.test.filters.SmallTest |
| import androidx.ui.core.Alignment |
| import androidx.ui.core.IntPx |
| 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.ipx |
| 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.LayoutAspectRatio |
| import androidx.ui.layout.LayoutExpanded |
| import androidx.ui.layout.LayoutGravity |
| import androidx.ui.layout.LayoutPadding |
| import androidx.ui.layout.LayoutSize |
| import androidx.ui.layout.Stack |
| 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 StackTest : LayoutTest() { |
| @Test |
| fun testStack() = withDensity(density) { |
| val sizeDp = 50.dp |
| val size = sizeDp.toIntPx() |
| |
| val positionedLatch = CountDownLatch(3) |
| val stackSize = Ref<PxSize>() |
| val alignedChildSize = Ref<PxSize>() |
| val alignedChildPosition = Ref<PxPosition>() |
| val positionedChildSize = Ref<PxSize>() |
| val positionedChildPosition = Ref<PxPosition>() |
| show { |
| Align(alignment = Alignment.TopLeft) { |
| OnChildPositioned(onPositioned = { coordinates -> |
| stackSize.value = coordinates.size |
| positionedLatch.countDown() |
| }) { |
| Stack { |
| Container(LayoutGravity.BottomRight, width = sizeDp, height = sizeDp) { |
| SaveLayoutInfo( |
| size = alignedChildSize, |
| position = alignedChildPosition, |
| positionedLatch = positionedLatch |
| ) |
| } |
| |
| Container(LayoutGravity.Stretch wraps LayoutPadding(10.dp)) { |
| SaveLayoutInfo( |
| size = positionedChildSize, |
| position = positionedChildPosition, |
| positionedLatch = positionedLatch |
| ) |
| } |
| } |
| } |
| } |
| } |
| positionedLatch.await(1, TimeUnit.SECONDS) |
| |
| assertEquals(PxSize(size, size), stackSize.value) |
| assertEquals(PxSize(size, size), alignedChildSize.value) |
| assertEquals(PxPosition(0.px, 0.px), alignedChildPosition.value) |
| assertEquals(PxSize(30.dp.toIntPx(), 30.dp.toIntPx()), positionedChildSize.value) |
| assertEquals(PxPosition(10.dp.toIntPx(), 10.dp.toIntPx()), positionedChildPosition.value) |
| } |
| |
| @Test |
| fun testStack_withMultipleAlignedChildren() = withDensity(density) { |
| val size = 250.ipx |
| val sizeDp = size.toDp() |
| val doubleSizeDp = sizeDp * 2 |
| val doubleSize = (sizeDp * 2).toIntPx() |
| |
| val positionedLatch = CountDownLatch(3) |
| val stackSize = Ref<PxSize>() |
| val childSize = arrayOf(Ref<PxSize>(), Ref<PxSize>()) |
| val childPosition = arrayOf(Ref<PxPosition>(), Ref<PxPosition>()) |
| show { |
| Align(alignment = Alignment.TopLeft) { |
| OnChildPositioned(onPositioned = { coordinates -> |
| stackSize.value = coordinates.size |
| positionedLatch.countDown() |
| }) { |
| Stack { |
| Container( |
| modifier = LayoutGravity.BottomRight, width = sizeDp, height = sizeDp |
| ) { |
| SaveLayoutInfo( |
| size = childSize[0], |
| position = childPosition[0], |
| positionedLatch = positionedLatch |
| ) |
| } |
| Container( |
| modifier = LayoutGravity.BottomRight, |
| width = doubleSizeDp, |
| height = doubleSizeDp |
| ) { |
| SaveLayoutInfo( |
| size = childSize[1], |
| position = childPosition[1], |
| positionedLatch = positionedLatch |
| ) |
| } |
| } |
| } |
| } |
| } |
| positionedLatch.await(1, TimeUnit.SECONDS) |
| |
| assertEquals(PxSize(doubleSize, doubleSize), stackSize.value) |
| assertEquals(PxSize(size, size), childSize[0].value) |
| assertEquals(PxPosition(size, size), childPosition[0].value) |
| assertEquals(PxSize(doubleSize, doubleSize), childSize[1].value) |
| assertEquals(PxPosition(0.px, 0.px), childPosition[1].value) |
| } |
| |
| @Test |
| fun testStack_withStretchChildren() = withDensity(density) { |
| val size = 250.ipx |
| val sizeDp = size.toDp() |
| val halfSizeDp = sizeDp / 2 |
| val inset = 50.ipx |
| val insetDp = inset.toDp() |
| |
| val positionedLatch = CountDownLatch(6) |
| val stackSize = Ref<PxSize>() |
| val childSize = Array(5) { Ref<PxSize>() } |
| val childPosition = Array(5) { Ref<PxPosition>() } |
| show { |
| Align(alignment = Alignment.TopLeft) { |
| OnChildPositioned(onPositioned = { coordinates -> |
| stackSize.value = coordinates.size |
| positionedLatch.countDown() |
| }) { |
| Stack { |
| Container(LayoutGravity.Center, width = sizeDp, height = sizeDp) { |
| SaveLayoutInfo( |
| size = childSize[0], |
| position = childPosition[0], |
| positionedLatch = positionedLatch |
| ) |
| } |
| Container( |
| LayoutGravity.Stretch wraps LayoutPadding( |
| left = insetDp, |
| top = insetDp |
| ), |
| width = halfSizeDp, |
| height = halfSizeDp |
| ) { |
| SaveLayoutInfo( |
| size = childSize[1], |
| position = childPosition[1], |
| positionedLatch = positionedLatch |
| ) |
| } |
| Container( |
| LayoutGravity.Stretch wraps LayoutPadding( |
| right = insetDp, |
| bottom = insetDp |
| ), |
| width = halfSizeDp, |
| height = halfSizeDp |
| ) { |
| SaveLayoutInfo( |
| size = childSize[2], |
| position = childPosition[2], |
| positionedLatch = positionedLatch |
| ) |
| } |
| Container( |
| LayoutGravity.Stretch wraps LayoutPadding( |
| left = insetDp, |
| right = insetDp |
| ), |
| width = halfSizeDp, |
| height = halfSizeDp) { |
| SaveLayoutInfo( |
| size = childSize[3], |
| position = childPosition[3], |
| positionedLatch = positionedLatch |
| ) |
| } |
| Container( |
| LayoutGravity.Stretch wraps LayoutPadding( |
| top = insetDp, |
| bottom = insetDp |
| ), |
| width = halfSizeDp, |
| height = halfSizeDp |
| ) { |
| SaveLayoutInfo( |
| size = childSize[4], |
| position = childPosition[4], |
| positionedLatch = positionedLatch |
| ) |
| } |
| } |
| } |
| } |
| } |
| positionedLatch.await(1, TimeUnit.SECONDS) |
| |
| assertEquals(PxSize(size, size), stackSize.value) |
| assertEquals(PxSize(size, size), childSize[0].value) |
| assertEquals(PxPosition(0.px, 0.px), childPosition[0].value) |
| assertEquals(PxSize(size - inset, size - inset), childSize[1].value) |
| assertEquals(PxPosition(inset, inset), childPosition[1].value) |
| assertEquals(PxSize(size - inset, size - inset), childSize[2].value) |
| assertEquals(PxPosition(0.px, 0.px), childPosition[2].value) |
| assertEquals(PxSize(size - inset * 2, size), childSize[3].value) |
| assertEquals(PxPosition(inset, 0.ipx), childPosition[3].value) |
| assertEquals(PxSize(size, size - inset * 2), childSize[4].value) |
| assertEquals(PxPosition(0.ipx, inset), childPosition[4].value) |
| } |
| |
| @Test |
| fun testStack_expanded() = withDensity(density) { |
| val size = 250.ipx |
| val sizeDp = size.toDp() |
| val halfSize = 125.ipx |
| val halfSizeDp = halfSize.toDp() |
| |
| val positionedLatch = CountDownLatch(3) |
| val stackSize = Ref<PxSize>() |
| val childSize = Array(2) { Ref<PxSize>() } |
| val childPosition = Array(2) { Ref<PxPosition>() } |
| show { |
| Align(alignment = Alignment.TopLeft) { |
| OnChildPositioned(onPositioned = { coordinates -> |
| stackSize.value = coordinates.size |
| positionedLatch.countDown() |
| }) { |
| Container(LayoutSize(sizeDp, sizeDp)) { |
| Stack { |
| Container(LayoutExpanded) { |
| SaveLayoutInfo( |
| size = childSize[0], |
| position = childPosition[0], |
| positionedLatch = positionedLatch |
| ) |
| } |
| Container( |
| LayoutGravity.BottomRight, |
| width = halfSizeDp, |
| height = halfSizeDp |
| ) { |
| SaveLayoutInfo( |
| size = childSize[1], |
| position = childPosition[1], |
| positionedLatch = positionedLatch |
| ) |
| } |
| } |
| } |
| } |
| } |
| } |
| positionedLatch.await(1, TimeUnit.SECONDS) |
| |
| assertEquals(PxSize(size, size), stackSize.value) |
| assertEquals(PxSize(size, size), childSize[0].value) |
| assertEquals(PxPosition(0.px, 0.px), childPosition[0].value) |
| assertEquals(PxSize(halfSize, halfSize), childSize[1].value) |
| assertEquals(PxPosition(size - halfSize, size - halfSize), childPosition[1].value) |
| } |
| |
| @Test |
| fun testStack_hasCorrectIntrinsicMeasurements() = withDensity(density) { |
| val testWidth = 90.ipx.toDp() |
| val testHeight = 80.ipx.toDp() |
| |
| val testDimension = 200.ipx |
| // When measuring the height with testDimension, width should be double |
| val expectedWidth = testDimension * 2 |
| // When measuring the width with testDimension, height should be half |
| val expectedHeight = testDimension / 2 |
| |
| testIntrinsics(@Composable { |
| Stack { |
| Container(LayoutGravity.TopLeft wraps LayoutAspectRatio(2f)) { } |
| ConstrainedBox( |
| DpConstraints.tightConstraints(testWidth, testHeight), |
| LayoutGravity.BottomCenter |
| ) { } |
| ConstrainedBox( |
| DpConstraints.tightConstraints(200.dp, 200.dp), |
| LayoutGravity.Stretch wraps LayoutPadding(10.dp) |
| ) { } |
| } |
| }) { minIntrinsicWidth, minIntrinsicHeight, maxIntrinsicWidth, maxIntrinsicHeight -> |
| // Min width. |
| assertEquals(testWidth.toIntPx(), minIntrinsicWidth(0.dp.toIntPx())) |
| assertEquals(expectedWidth, minIntrinsicWidth(testDimension)) |
| assertEquals(testWidth.toIntPx(), minIntrinsicWidth(IntPx.Infinity)) |
| // Min height. |
| assertEquals(testHeight.toIntPx(), minIntrinsicHeight(0.dp.toIntPx())) |
| assertEquals(expectedHeight, minIntrinsicHeight(testDimension)) |
| assertEquals(testHeight.toIntPx(), minIntrinsicHeight(IntPx.Infinity)) |
| // Max width. |
| assertEquals(testWidth.toIntPx(), maxIntrinsicWidth(0.dp.toIntPx())) |
| assertEquals(expectedWidth, maxIntrinsicWidth(testDimension)) |
| assertEquals(testWidth.toIntPx(), maxIntrinsicWidth(IntPx.Infinity)) |
| // Max height. |
| assertEquals(testHeight.toIntPx(), maxIntrinsicHeight(0.dp.toIntPx())) |
| assertEquals(expectedHeight, maxIntrinsicHeight(testDimension)) |
| assertEquals(testHeight.toIntPx(), maxIntrinsicHeight(IntPx.Infinity)) |
| } |
| } |
| |
| @Test |
| fun testStack_hasCorrectIntrinsicMeasurements_withNoAlignedChildren() = withDensity(density) { |
| testIntrinsics(@Composable { |
| Stack { |
| ConstrainedBox( |
| modifier = LayoutGravity.Stretch wraps LayoutPadding(10.dp), |
| constraints = DpConstraints.tightConstraints(200.dp, 200.dp) |
| ) { } |
| } |
| }) { minIntrinsicWidth, minIntrinsicHeight, maxIntrinsicWidth, maxIntrinsicHeight -> |
| // Min width. |
| assertEquals(0.dp.toIntPx(), minIntrinsicWidth(50.dp.toIntPx())) |
| assertEquals(0.dp.toIntPx(), minIntrinsicWidth(IntPx.Infinity)) |
| // Min height. |
| assertEquals(0.dp.toIntPx(), minIntrinsicHeight(50.dp.toIntPx())) |
| assertEquals(0.dp.toIntPx(), minIntrinsicHeight(IntPx.Infinity)) |
| // Max width. |
| assertEquals(0.dp.toIntPx(), maxIntrinsicWidth(50.dp.toIntPx())) |
| assertEquals(0.dp.toIntPx(), maxIntrinsicWidth(IntPx.Infinity)) |
| // Max height. |
| assertEquals(0.dp.toIntPx(), maxIntrinsicHeight(50.dp.toIntPx())) |
| assertEquals(0.dp.toIntPx(), maxIntrinsicHeight(IntPx.Infinity)) |
| } |
| } |
| } |