| /* |
| * 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 android.widget.FrameLayout |
| import androidx.compose.Composable |
| import androidx.compose.Model |
| import androidx.compose.emptyContent |
| import androidx.test.filters.SmallTest |
| import androidx.ui.core.Alignment |
| import androidx.ui.core.Layout |
| import androidx.ui.core.LayoutCoordinates |
| import androidx.ui.core.OnChildPositioned |
| import androidx.ui.core.OnPositioned |
| import androidx.ui.core.VerticalAlignmentLine |
| import androidx.ui.core.positionInRoot |
| import androidx.ui.core.setContent |
| import androidx.ui.layout.Align |
| import androidx.ui.layout.Center |
| import androidx.ui.layout.Container |
| import androidx.ui.layout.LayoutPadding |
| import androidx.ui.layout.LayoutSize |
| import androidx.ui.layout.Row |
| import androidx.ui.test.positionInParent |
| import androidx.ui.unit.Px |
| import androidx.ui.unit.PxPosition |
| import androidx.ui.unit.dp |
| import androidx.ui.unit.ipx |
| import androidx.ui.unit.min |
| import androidx.ui.unit.px |
| import com.google.common.truth.Truth.assertThat |
| import org.junit.Assert |
| import org.junit.Assert.assertTrue |
| 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 OnPositionedTest : LayoutTest() { |
| |
| @Test |
| fun simplePadding() = with(density) { |
| val paddingLeftPx = 100.px |
| val paddingTopPx = 120.px |
| var realLeft: Px? = null |
| var realTop: Px? = null |
| |
| val positionedLatch = CountDownLatch(1) |
| show { |
| Container(LayoutSize.Fill + |
| LayoutPadding(start = paddingLeftPx.toDp(), top = paddingTopPx.toDp()) |
| ) { |
| OnPositioned(onPositioned = { |
| realLeft = it.positionInParent.x |
| realTop = it.positionInParent.y |
| positionedLatch.countDown() |
| }) |
| } |
| } |
| positionedLatch.await(1, TimeUnit.SECONDS) |
| |
| assertThat(paddingLeftPx).isEqualTo(realLeft) |
| assertThat(paddingTopPx).isEqualTo(realTop) |
| } |
| |
| @Test |
| fun simplePaddingWithChildPositioned() = with(density) { |
| val paddingLeftPx = 100.px |
| val paddingTopPx = 120.px |
| var realLeft: Px? = null |
| var realTop: Px? = null |
| |
| val positionedLatch = CountDownLatch(1) |
| show { |
| Container { |
| OnChildPositioned(onPositioned = { |
| realLeft = it.positionInParent.x |
| realTop = it.positionInParent.y |
| positionedLatch.countDown() |
| }) { |
| Container( |
| LayoutSize.Fill + LayoutPadding( |
| start = paddingLeftPx.toDp(), |
| top = paddingTopPx.toDp() |
| ), children = emptyContent() |
| ) |
| } |
| } |
| } |
| positionedLatch.await(1, TimeUnit.SECONDS) |
| |
| assertThat(realLeft).isEqualTo(paddingLeftPx) |
| assertThat(realTop).isEqualTo(paddingTopPx) |
| } |
| |
| @Test |
| fun nestedLayoutCoordinates() = with(density) { |
| val firstPaddingPx = 10.px |
| val secondPaddingPx = 20.px |
| val thirdPaddingPx = 30.px |
| var gpCoordinates: LayoutCoordinates? = null |
| var childCoordinates: LayoutCoordinates? = null |
| |
| val positionedLatch = CountDownLatch(2) |
| show { |
| Container(LayoutPadding(start = firstPaddingPx.toDp())) { |
| OnPositioned(onPositioned = { |
| gpCoordinates = it |
| positionedLatch.countDown() |
| }) |
| Container(LayoutPadding(start = secondPaddingPx.toDp())) { |
| Container(LayoutSize.Fill + LayoutPadding(start = thirdPaddingPx.toDp())) { |
| OnPositioned(onPositioned = { |
| childCoordinates = it |
| positionedLatch.countDown() |
| }) |
| } |
| } |
| } |
| } |
| positionedLatch.await(1, TimeUnit.SECONDS) |
| |
| // global position |
| val gPos = childCoordinates!!.localToGlobal(PxPosition.Origin).x |
| assertThat(gPos).isEqualTo(firstPaddingPx + secondPaddingPx + thirdPaddingPx) |
| // Position in grandparent Px(value=50.0) |
| val gpPos = gpCoordinates!!.childToLocal(childCoordinates!!, PxPosition.Origin).x |
| assertThat(gpPos).isEqualTo(secondPaddingPx + thirdPaddingPx) |
| // local position |
| assertThat(childCoordinates!!.positionInParent.x).isEqualTo(thirdPaddingPx) |
| } |
| |
| @Test |
| fun childPositionedForTwoContainers() = with(density) { |
| val size = 100.px |
| val sizeDp = size.toDp() |
| var firstCoordinates: LayoutCoordinates? = null |
| var secondCoordinates: LayoutCoordinates? = null |
| |
| val positionedLatch = CountDownLatch(2) |
| show { |
| Row { |
| OnChildPositioned(onPositioned = { |
| firstCoordinates = it |
| positionedLatch.countDown() |
| }) { |
| Container(width = sizeDp, height = sizeDp, children = emptyContent()) |
| } |
| OnChildPositioned(onPositioned = { |
| secondCoordinates = it |
| positionedLatch.countDown() |
| }) { |
| Container(width = sizeDp, height = sizeDp, children = emptyContent()) |
| } |
| } |
| } |
| positionedLatch.await(1, TimeUnit.SECONDS) |
| |
| assertThat(0.px).isEqualTo(firstCoordinates!!.positionInParent.x) |
| assertThat(size).isEqualTo(secondCoordinates!!.positionInParent.x) |
| } |
| |
| @Test |
| fun globalCoordinatesAreInActivityCoordinates() = with(density) { |
| val padding = 30 |
| val localPosition = PxPosition.Origin |
| val globalPosition = PxPosition(padding.ipx, padding.ipx) |
| var realGlobalPosition: PxPosition? = null |
| var realLocalPosition: PxPosition? = null |
| |
| val positionedLatch = CountDownLatch(1) |
| activityTestRule.runOnUiThread(object : Runnable { |
| override fun run() { |
| val frameLayout = FrameLayout(activity) |
| frameLayout.setPadding(padding, padding, padding, padding) |
| activity.setContentView(frameLayout) |
| |
| frameLayout.setContent { |
| OnChildPositioned(onPositioned = { |
| realGlobalPosition = it.localToGlobal(localPosition) |
| realLocalPosition = it.globalToLocal(globalPosition) |
| positionedLatch.countDown() |
| }) { |
| Container(expanded = true, children = emptyContent()) |
| } |
| } |
| } |
| }) |
| positionedLatch.await(1, TimeUnit.SECONDS) |
| |
| assertThat(realGlobalPosition).isEqualTo(globalPosition) |
| assertThat(realLocalPosition).isEqualTo(localPosition) |
| } |
| |
| @Test |
| fun justAddedOnPositionedCallbackFiredWithoutLayoutChanges() = with(density) { |
| val needCallback = NeedCallback(false) |
| |
| val positionedLatch = CountDownLatch(1) |
| show { |
| Container(expanded = true) { |
| if (needCallback.value) { |
| OnPositioned(onPositioned = { |
| positionedLatch.countDown() |
| }) |
| } |
| } |
| } |
| |
| activityTestRule.runOnUiThread { needCallback.value = true } |
| |
| assertThat(positionedLatch.await(1, TimeUnit.SECONDS)).isEqualTo(true) |
| } |
| |
| @Test |
| fun testRepositionTriggersCallback() { |
| val modelLeft = SizeModel(30.dp) |
| var realLeft: Px? = null |
| |
| var positionedLatch = CountDownLatch(1) |
| show { |
| Center { |
| OnChildPositioned(onPositioned = { |
| realLeft = it.positionInParent.x |
| positionedLatch.countDown() |
| }) { |
| Container( |
| LayoutSize.Fill + LayoutPadding(start = modelLeft.size), |
| children = emptyContent() |
| ) |
| } |
| } |
| } |
| positionedLatch.await(1, TimeUnit.SECONDS) |
| |
| positionedLatch = CountDownLatch(1) |
| activityTestRule.runOnUiThread { modelLeft.size = 40.dp } |
| |
| positionedLatch.await(1, TimeUnit.SECONDS) |
| with(density) { |
| assertThat(realLeft).isEqualTo(40.dp.toPx()) |
| } |
| } |
| |
| @Test |
| fun testGrandParentRepositionTriggersChildrenCallback() { |
| // when we reposition any parent layout is causes the change in global |
| // position of all the children down the tree(for example during the scrolling). |
| // children should be able to react on this change. |
| val modelLeft = SizeModel(20.dp) |
| var realLeft: Px? = null |
| var positionedLatch = CountDownLatch(1) |
| show { |
| Align(Alignment.TopStart) { |
| Offset(modelLeft) { |
| Container(width = 10.dp, height = 10.dp) { |
| Container(width = 10.dp, height = 10.dp) { |
| Container(width = 10.dp, height = 10.dp) { |
| OnPositioned(onPositioned = { |
| realLeft = it.positionInRoot.x |
| positionedLatch.countDown() |
| }) |
| } |
| } |
| } |
| } |
| } |
| } |
| positionedLatch.await(1, TimeUnit.SECONDS) |
| |
| positionedLatch = CountDownLatch(1) |
| activityTestRule.runOnUiThread { modelLeft.size = 40.dp } |
| |
| positionedLatch.await(1, TimeUnit.SECONDS) |
| with(density) { |
| assertThat(realLeft).isEqualTo(40.dp.toPx()) |
| } |
| } |
| |
| @Test |
| fun testAlignmentLinesArePresent() { |
| val latch = CountDownLatch(1) |
| val line = VerticalAlignmentLine(::min) |
| val lineValue = 10.ipx |
| show { |
| val onPositioned = @Composable { |
| OnPositioned { coordinates -> |
| Assert.assertEquals(1, coordinates.providedAlignmentLines.size) |
| Assert.assertEquals(lineValue, coordinates[line]) |
| latch.countDown() |
| } |
| } |
| Layout(onPositioned) { _, _, _ -> |
| layout(0.ipx, 0.ipx, mapOf(line to lineValue)) { } |
| } |
| } |
| assertTrue(latch.await(1, TimeUnit.SECONDS)) |
| } |
| |
| @Composable |
| private fun Offset(sizeModel: SizeModel, children: @Composable() () -> Unit) { |
| // simple copy of Padding which doesn't recompose when the size changes |
| Layout(children) { measurables, constraints, _ -> |
| layout(constraints.maxWidth, constraints.maxHeight) { |
| measurables.first().measure(constraints).place(sizeModel.size.toPx(), 0.px) |
| } |
| } |
| } |
| } |
| |
| @Model |
| private data class NeedCallback(var value: Boolean) |