| /* |
| * 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.compose.Composable |
| import androidx.compose.composer |
| import androidx.ui.core.Constraints |
| import androidx.ui.core.IntPx |
| import androidx.ui.core.IntPxPosition |
| import androidx.ui.core.IntPxSize |
| import androidx.ui.core.Layout |
| 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.Alignment |
| import androidx.ui.layout.AspectRatio |
| import androidx.ui.layout.Container |
| import org.junit.Assert.assertEquals |
| 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 AlignTest : LayoutTest() { |
| @Test |
| fun testAlign() = withDensity(density) { |
| val sizeDp = 50.dp |
| val size = sizeDp.toIntPx() |
| |
| val positionedLatch = CountDownLatch(2) |
| val alignSize = Ref<PxSize>() |
| val alignPosition = Ref<PxPosition>() |
| val childSize = Ref<PxSize>() |
| val childPosition = Ref<PxPosition>() |
| show { |
| Align(alignment = Alignment.BottomRight) { |
| SaveLayoutInfo( |
| size = alignSize, |
| position = alignPosition, |
| positionedLatch = positionedLatch |
| ) |
| Container(width = sizeDp, height = sizeDp) { |
| SaveLayoutInfo( |
| size = childSize, |
| position = childPosition, |
| positionedLatch = positionedLatch |
| ) |
| } |
| } |
| } |
| positionedLatch.await(1, TimeUnit.SECONDS) |
| |
| val root = findAndroidCraneView() |
| waitForDraw(root) |
| |
| assertEquals(PxSize(root.width.px, root.height.px), alignSize.value) |
| assertEquals(PxPosition(0.px, 0.px), alignPosition.value) |
| assertEquals(PxSize(size, size), childSize.value) |
| assertEquals( |
| PxPosition(root.width.px - size, root.height.px - size), |
| childPosition.value |
| ) |
| } |
| |
| @Test |
| fun testAlign_wrapsContent_whenMeasuredWithInfiniteConstraints() = withDensity(density) { |
| val sizeDp = 50.dp |
| val size = sizeDp.toIntPx() |
| |
| val positionedLatch = CountDownLatch(2) |
| val alignSize = Ref<PxSize>() |
| val alignPosition = Ref<PxPosition>() |
| val childSize = Ref<PxSize>() |
| val childPosition = Ref<PxPosition>() |
| show { |
| Layout( |
| children = { |
| Align(alignment = Alignment.BottomRight) { |
| SaveLayoutInfo( |
| size = alignSize, |
| position = alignPosition, |
| positionedLatch = positionedLatch |
| ) |
| Container(width = sizeDp, height = sizeDp) { |
| SaveLayoutInfo( |
| size = childSize, |
| position = childPosition, |
| positionedLatch = positionedLatch |
| ) |
| } |
| } |
| }, |
| measureBlock = { measurables, constraints -> |
| val placeable = measurables.first().measure(Constraints()) |
| layout(constraints.maxWidth, constraints.maxHeight) { |
| placeable.place(0.ipx, 0.ipx) |
| } |
| } |
| ) |
| } |
| positionedLatch.await(1, TimeUnit.SECONDS) |
| |
| val root = findAndroidCraneView() |
| waitForDraw(root) |
| |
| assertEquals(PxSize(size, size), alignSize.value) |
| assertEquals(PxPosition(0.px, 0.px), alignPosition.value) |
| assertEquals(PxSize(size, size), childSize.value) |
| assertEquals(PxPosition(0.px, 0.px), childPosition.value) |
| } |
| |
| // TODO(popam): this should be unit test instead |
| @Test |
| fun testAlignmentCoordinates_evenSize() { |
| val size = IntPxSize(2.ipx, 2.ipx) |
| assertEquals(IntPxPosition(0.ipx, 0.ipx), Alignment.TopLeft.align(size)) |
| assertEquals(IntPxPosition(1.ipx, 0.ipx), Alignment.TopCenter.align(size)) |
| assertEquals(IntPxPosition(2.ipx, 0.ipx), Alignment.TopRight.align(size)) |
| assertEquals(IntPxPosition(0.ipx, 1.ipx), Alignment.CenterLeft.align(size)) |
| assertEquals(IntPxPosition(1.ipx, 1.ipx), Alignment.Center.align(size)) |
| assertEquals(IntPxPosition(2.ipx, 1.ipx), Alignment.CenterRight.align(size)) |
| assertEquals(IntPxPosition(0.ipx, 2.ipx), Alignment.BottomLeft.align(size)) |
| assertEquals(IntPxPosition(1.ipx, 2.ipx), Alignment.BottomCenter.align(size)) |
| assertEquals(IntPxPosition(2.ipx, 2.ipx), Alignment.BottomRight.align(size)) |
| } |
| |
| // TODO(popam): this should be unit test instead |
| @Test |
| fun testAlignmentCoordinates_oddSize() { |
| val size = IntPxSize(3.ipx, 3.ipx) |
| assertEquals(IntPxPosition(0.ipx, 0.ipx), Alignment.TopLeft.align(size)) |
| assertEquals(IntPxPosition(2.ipx, 0.ipx), Alignment.TopCenter.align(size)) |
| assertEquals(IntPxPosition(3.ipx, 0.ipx), Alignment.TopRight.align(size)) |
| assertEquals(IntPxPosition(0.ipx, 2.ipx), Alignment.CenterLeft.align(size)) |
| assertEquals(IntPxPosition(2.ipx, 2.ipx), Alignment.Center.align(size)) |
| assertEquals(IntPxPosition(3.ipx, 2.ipx), Alignment.CenterRight.align(size)) |
| assertEquals(IntPxPosition(0.ipx, 3.ipx), Alignment.BottomLeft.align(size)) |
| assertEquals(IntPxPosition(2.ipx, 3.ipx), Alignment.BottomCenter.align(size)) |
| assertEquals(IntPxPosition(3.ipx, 3.ipx), Alignment.BottomRight.align(size)) |
| } |
| |
| @Test |
| fun testAlign_hasCorrectIntrinsicMeasurements() = withDensity(density) { |
| testIntrinsics(@Composable { |
| Align(alignment = Alignment.TopLeft) { |
| AspectRatio(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 testAlign_hasCorrectIntrinsicMeasurements_whenNoChildren() = withDensity(density) { |
| testIntrinsics(@Composable { |
| Align(alignment = Alignment.TopLeft) { } |
| }) { 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())) |
| } |
| } |
| |
| @Test |
| fun testAlign_alignsCorrectly_whenOddDimensions_endAligned() = withDensity(density) { |
| // Given a 100 x 100 pixel container, we want to make sure that when aligning a 1 x 1 pixel |
| // child to both ends (bottom, and right) we correctly position children at the last |
| // possible pixel, and avoid rounding issues. Previously we first centered the coordinates, |
| // and then aligned after, so the maths would actually be (99 / 2) * 2, which incorrectly |
| // ends up at 100 (IntPx rounds up) - so the last pixels in both directions just wouldn't |
| // be visible. |
| val parentSize = 100.ipx.toDp() |
| val childSizeDp = 1.ipx.toDp() |
| val childSizeIpx = childSizeDp.toIntPx() |
| |
| val positionedLatch = CountDownLatch(2) |
| val alignSize = Ref<PxSize>() |
| val alignPosition = Ref<PxPosition>() |
| val childSize = Ref<PxSize>() |
| val childPosition = Ref<PxPosition>() |
| show { |
| Layout( |
| children = { |
| Container(width = parentSize, height = parentSize) { |
| Align(alignment = Alignment.BottomRight) { |
| SaveLayoutInfo( |
| size = alignSize, |
| position = alignPosition, |
| positionedLatch = positionedLatch |
| ) |
| Container(width = childSizeDp, height = childSizeDp) { |
| SaveLayoutInfo( |
| size = childSize, |
| position = childPosition, |
| positionedLatch = positionedLatch |
| ) |
| } |
| } |
| } |
| }, measureBlock = { measurables, constraints -> |
| val placeable = measurables.first().measure(Constraints()) |
| layout(constraints.maxWidth, constraints.maxHeight) { |
| placeable.place(0.ipx, 0.ipx) |
| } |
| } |
| ) |
| } |
| positionedLatch.await(1, TimeUnit.SECONDS) |
| |
| val root = findAndroidCraneView() |
| waitForDraw(root) |
| |
| assertEquals(PxSize(childSizeIpx, childSizeIpx), childSize.value) |
| assertEquals( |
| PxPosition( |
| alignSize.value!!.width - childSizeIpx, |
| alignSize.value!!.height - childSizeIpx |
| ), |
| childPosition.value |
| ) |
| } |
| } |
