| /* |
| * 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.compose.foundation.layout |
| |
| import androidx.test.filters.SmallTest |
| import androidx.ui.core.HorizontalAlignmentLine |
| import androidx.ui.core.Layout |
| import androidx.ui.core.Modifier |
| import androidx.ui.core.Ref |
| import androidx.ui.core.VerticalAlignmentLine |
| import androidx.ui.core.WithConstraints |
| import androidx.ui.core.onPositioned |
| import androidx.ui.core.positionInRoot |
| import androidx.ui.geometry.Offset |
| import androidx.ui.unit.IntSize |
| import androidx.ui.unit.dp |
| import org.junit.Assert |
| import org.junit.Test |
| import org.junit.runner.RunWith |
| import org.junit.runners.JUnit4 |
| import kotlin.math.min |
| import java.util.concurrent.CountDownLatch |
| import java.util.concurrent.TimeUnit |
| |
| @SmallTest |
| @RunWith(JUnit4::class) |
| class AlignmentLineTest : LayoutTest() { |
| @Test |
| fun testRelativePaddingFrom_vertical() = with(density) { |
| val layoutLatch = CountDownLatch(2) |
| val testLine = VerticalAlignmentLine(::min) |
| val beforeDp = 20f.toDp() |
| val afterDp = 40f.toDp() |
| val childDp = 30f.toDp() |
| val lineDp = 10f.toDp() |
| |
| val parentSize = Ref<IntSize>() |
| val childSize = Ref<IntSize>() |
| val childPosition = Ref<Offset>() |
| show { |
| Stack( |
| Modifier.onPositioned { |
| parentSize.value = it.size |
| layoutLatch.countDown() |
| } |
| ) { |
| Layout({}, |
| Modifier |
| .onPositioned { |
| childSize.value = it.size |
| childPosition.value = it.positionInRoot |
| layoutLatch.countDown() |
| } |
| .relativePaddingFrom(testLine, beforeDp, afterDp) |
| ) { _, _ -> |
| layout(childDp.toIntPx(), 0, mapOf(testLine to lineDp.toIntPx())) {} |
| } |
| } |
| } |
| Assert.assertTrue(layoutLatch.await(1, TimeUnit.SECONDS)) |
| |
| Assert.assertNotNull(parentSize.value) |
| Assert.assertEquals( |
| beforeDp.toIntPx() + afterDp.toIntPx(), |
| parentSize.value!!.width |
| ) |
| Assert.assertNotNull(childSize.value) |
| Assert.assertEquals(childSize.value!!.height, parentSize.value!!.height) |
| Assert.assertNotNull(childPosition.value) |
| Assert.assertEquals( |
| (beforeDp.toIntPx() - lineDp.toIntPx()).toFloat(), |
| childPosition.value!!.x |
| ) |
| Assert.assertEquals(0f, childPosition.value!!.y) |
| } |
| |
| @Test |
| fun testRelativePaddingFrom_horizontal() = with(density) { |
| val layoutLatch = CountDownLatch(2) |
| val testLine = HorizontalAlignmentLine(::min) |
| val beforeDp = 20f.toDp() |
| val afterDp = 40f.toDp() |
| val childDp = 30f.toDp() |
| val lineDp = 10f.toDp() |
| |
| val parentSize = Ref<IntSize>() |
| val childSize = Ref<IntSize>() |
| val childPosition = Ref<Offset>() |
| show { |
| Stack( |
| modifier = Modifier.onPositioned { |
| parentSize.value = it.size |
| layoutLatch.countDown() |
| } |
| ) { |
| Layout( |
| modifier = Modifier |
| .onPositioned { |
| childSize.value = it.size |
| childPosition.value = it.positionInRoot |
| layoutLatch.countDown() |
| } |
| .relativePaddingFrom(testLine, beforeDp, afterDp), |
| children = {} |
| ) { _, _ -> |
| layout(0, childDp.toIntPx(), mapOf(testLine to lineDp.toIntPx())) {} |
| } |
| } |
| } |
| Assert.assertTrue(layoutLatch.await(1, TimeUnit.SECONDS)) |
| |
| Assert.assertNotNull(childSize.value) |
| Assert.assertEquals(childSize.value!!.width, parentSize.value!!.width) |
| Assert.assertNotNull(parentSize.value) |
| Assert.assertEquals(beforeDp.toIntPx() + afterDp.toIntPx(), parentSize.value!!.height) |
| Assert.assertNotNull(childPosition.value) |
| Assert.assertEquals(0f, childPosition.value!!.x) |
| Assert.assertEquals( |
| (beforeDp.toIntPx() - lineDp.toIntPx()).toFloat(), |
| childPosition.value!!.y |
| ) |
| } |
| |
| @Test |
| fun testRelativePaddingFrom_vertical_withSmallOffsets() = with(density) { |
| val layoutLatch = CountDownLatch(2) |
| val testLine = VerticalAlignmentLine(::min) |
| val beforeDp = 5f.toDp() |
| val afterDp = 5f.toDp() |
| val childDp = 30f.toDp() |
| val lineDp = 10f.toDp() |
| |
| val parentSize = Ref<IntSize>() |
| val childSize = Ref<IntSize>() |
| val childPosition = Ref<Offset>() |
| show { |
| Stack(modifier = Modifier.saveLayoutInfo(parentSize, Ref(), layoutLatch)) { |
| Layout( |
| modifier = Modifier |
| .saveLayoutInfo(childSize, childPosition, layoutLatch) |
| .relativePaddingFrom(testLine, beforeDp, afterDp), |
| children = {} |
| ) { _, _ -> |
| layout(childDp.toIntPx(), 0, mapOf(testLine to lineDp.toIntPx())) { } |
| } |
| } |
| } |
| Assert.assertTrue(layoutLatch.await(1, TimeUnit.SECONDS)) |
| |
| Assert.assertNotNull(parentSize.value) |
| Assert.assertNotNull(childSize.value) |
| Assert.assertEquals(childSize.value, parentSize.value) |
| Assert.assertNotNull(childPosition.value) |
| Assert.assertEquals(0f, childPosition.value!!.x) |
| Assert.assertEquals(0f, childPosition.value!!.y) |
| } |
| |
| @Test |
| fun testRelativePaddingFrom_horizontal_withSmallOffsets() = with(density) { |
| val layoutLatch = CountDownLatch(2) |
| val testLine = HorizontalAlignmentLine(::min) |
| val beforeDp = 5f.toDp() |
| val afterDp = 5f.toDp() |
| val childDp = 30f.toDp() |
| val lineDp = 10f.toDp() |
| |
| val parentSize = Ref<IntSize>() |
| val childSize = Ref<IntSize>() |
| val childPosition = Ref<Offset>() |
| show { |
| Stack(Modifier.saveLayoutInfo(parentSize, Ref(), layoutLatch)) { |
| Layout( |
| { }, |
| Modifier |
| .saveLayoutInfo(childSize, childPosition, layoutLatch) |
| .relativePaddingFrom(testLine, beforeDp, afterDp) |
| ) { _, _ -> |
| layout(0, childDp.toIntPx(), mapOf(testLine to lineDp.toIntPx())) { } |
| } |
| } |
| } |
| Assert.assertTrue(layoutLatch.await(1, TimeUnit.SECONDS)) |
| |
| Assert.assertNotNull(parentSize.value) |
| Assert.assertNotNull(childSize.value) |
| Assert.assertEquals(childSize.value, parentSize.value) |
| Assert.assertNotNull(childPosition.value) |
| Assert.assertEquals(0f, childPosition.value!!.x) |
| Assert.assertEquals(0f, childPosition.value!!.y) |
| } |
| |
| @Test |
| fun testRelativePaddingFrom_vertical_withInsufficientSpace() = with(density) { |
| val layoutLatch = CountDownLatch(2) |
| val testLine = VerticalAlignmentLine(::min) |
| val maxWidth = 30f.toDp() |
| val beforeDp = 20f.toDp() |
| val afterDp = 20f.toDp() |
| val childDp = 25f.toDp() |
| val lineDp = 10f.toDp() |
| |
| val parentSize = Ref<IntSize>() |
| val childSize = Ref<IntSize>() |
| val childPosition = Ref<Offset>() |
| show { |
| Stack(Modifier.saveLayoutInfo(parentSize, Ref(), layoutLatch)) { |
| Layout( |
| children = { }, |
| modifier = Modifier |
| .preferredSizeIn(maxWidth = maxWidth) |
| .saveLayoutInfo(childSize, childPosition, layoutLatch) |
| .relativePaddingFrom(testLine, beforeDp, afterDp) |
| ) { _, _ -> |
| layout( |
| childDp.toIntPx(), |
| 0, |
| mapOf(testLine to lineDp.toIntPx()) |
| ) { } |
| } |
| } |
| } |
| Assert.assertTrue(layoutLatch.await(1, TimeUnit.SECONDS)) |
| |
| Assert.assertNotNull(parentSize.value) |
| Assert.assertEquals(maxWidth.toIntPx(), parentSize.value!!.width) |
| Assert.assertNotNull(childSize.value) |
| Assert.assertEquals(childSize.value!!.height, parentSize.value!!.height) |
| Assert.assertNotNull(childPosition.value) |
| Assert.assertEquals(5f, childPosition.value!!.x) |
| Assert.assertEquals(0f, childPosition.value!!.y) |
| } |
| |
| @Test |
| fun testRelativePaddingFrom_horizontal_withInsufficientSpace() = with(density) { |
| val layoutLatch = CountDownLatch(2) |
| val testLine = HorizontalAlignmentLine(::min) |
| val maxHeight = 30f.toDp() |
| val beforeDp = 20f.toDp() |
| val afterDp = 20f.toDp() |
| val childDp = 25f.toDp() |
| val lineDp = 10f.toDp() |
| |
| val parentSize = Ref<IntSize>() |
| val childSize = Ref<IntSize>() |
| val childPosition = Ref<Offset>() |
| show { |
| Stack(Modifier.saveLayoutInfo(parentSize, Ref(), layoutLatch)) { |
| Layout( |
| children = { }, |
| modifier = Modifier |
| .preferredSizeIn(maxHeight = maxHeight) |
| .saveLayoutInfo(childSize, childPosition, layoutLatch) |
| .relativePaddingFrom(testLine, beforeDp, afterDp) |
| ) { _, _ -> |
| layout( |
| 0, |
| childDp.toIntPx(), |
| mapOf(testLine to lineDp.toIntPx()) |
| ) { } |
| } |
| } |
| } |
| Assert.assertTrue(layoutLatch.await(1, TimeUnit.SECONDS)) |
| |
| Assert.assertNotNull(childSize.value) |
| Assert.assertEquals(childSize.value!!.width, parentSize.value!!.width) |
| Assert.assertNotNull(parentSize.value) |
| Assert.assertEquals(maxHeight.toIntPx(), parentSize.value!!.height) |
| Assert.assertNotNull(childPosition.value) |
| Assert.assertEquals(0f, childPosition.value!!.x) |
| Assert.assertEquals(5f, childPosition.value!!.y) |
| } |
| |
| @Test |
| fun testRelativePaddingFrom_vertical_keepsCrossAxisMinConstraints() = with(density) { |
| val testLine = VerticalAlignmentLine(::min) |
| val latch = CountDownLatch(1) |
| val minHeight = 10.dp |
| show { |
| Stack { |
| WithConstraints( |
| Modifier |
| .preferredSizeIn(minHeight = minHeight) |
| .relativePaddingFrom(testLine) |
| ) { |
| Assert.assertEquals(minHeight.toIntPx(), constraints.minHeight) |
| latch.countDown() |
| } |
| } |
| } |
| Assert.assertTrue(latch.await(1, TimeUnit.SECONDS)) |
| } |
| |
| @Test |
| fun testRelativePaddingFrom_horizontal_keepsCrossAxisMinConstraints() = with(density) { |
| val testLine = HorizontalAlignmentLine(::min) |
| val latch = CountDownLatch(1) |
| val minWidth = 10.dp |
| show { |
| Stack { |
| WithConstraints( |
| Modifier |
| .preferredSizeIn(minWidth = minWidth) |
| .relativePaddingFrom(testLine) |
| ) { |
| Assert.assertEquals(minWidth.toIntPx(), constraints.minWidth) |
| latch.countDown() |
| } |
| } |
| } |
| Assert.assertTrue(latch.await(1, TimeUnit.SECONDS)) |
| } |
| } |