| /* |
| * Copyright 2020 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.core.test |
| |
| import android.os.Build |
| import android.view.View |
| import android.view.ViewGroup |
| import android.view.ViewTreeObserver |
| import androidx.compose.Composable |
| import androidx.compose.State |
| import androidx.compose.emptyContent |
| import androidx.compose.mutableStateOf |
| import androidx.test.filters.SdkSuppress |
| import androidx.test.filters.SmallTest |
| import androidx.ui.core.Constraints |
| import androidx.ui.core.DrawLayerModifier |
| import androidx.ui.core.Layout |
| import androidx.ui.core.Modifier |
| import androidx.ui.core.ZIndexModifier |
| import androidx.ui.core.drawBehind |
| import androidx.ui.core.drawLayer |
| import androidx.ui.core.setContent |
| import androidx.ui.core.zIndex |
| import androidx.ui.framework.test.TestActivity |
| import androidx.compose.ui.graphics.Color |
| import org.junit.Assert.assertFalse |
| import org.junit.Assert.assertTrue |
| import org.junit.Before |
| import org.junit.Rule |
| 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 DrawReorderingTest { |
| @Suppress("DEPRECATION") |
| @get:Rule |
| val rule = androidx.test.rule.ActivityTestRule<TestActivity>( |
| TestActivity::class.java |
| ) |
| @get:Rule |
| val excessiveAssertions = AndroidOwnerExtraAssertionsRule() |
| |
| private lateinit var activity: TestActivity |
| private lateinit var drawLatch: CountDownLatch |
| |
| @Before |
| fun setup() { |
| activity = rule.activity |
| activity.hasFocusLatch.await(5, TimeUnit.SECONDS) |
| drawLatch = CountDownLatch(1) |
| } |
| |
| @Test |
| @SdkSuppress(minSdkVersion = Build.VERSION_CODES.O) |
| fun testSiblingZOrder() { |
| rule.runOnUiThread { |
| activity.setContent { |
| FixedSize( |
| size = 30 |
| ) { |
| FixedSize( |
| 10, PaddingModifier(10) |
| .zIndex(1f) |
| .background(Color.White) |
| ) |
| FixedSize( |
| 30, Modifier.drawLayer() |
| .background(Color.Red) |
| .drawLatchModifier() |
| ) |
| } |
| } |
| } |
| rule.validateSquareColors( |
| outerColor = Color.Red, |
| innerColor = Color.White, |
| size = 10, |
| drawLatch = drawLatch |
| ) |
| } |
| |
| @Test |
| @SdkSuppress(minSdkVersion = Build.VERSION_CODES.O) |
| fun testUncleZOrder() { |
| rule.runOnUiThread { |
| activity.setContent { |
| FixedSize( |
| size = 30 |
| ) { |
| FixedSize( |
| 10, PaddingModifier(10) |
| .zIndex(1f) |
| .background(Color.White) |
| ) |
| FixedSize( |
| 30, Modifier.background(Color.Red) |
| .drawLatchModifier() |
| ) |
| } |
| } |
| } |
| rule.validateSquareColors( |
| outerColor = Color.Red, |
| innerColor = Color.White, |
| size = 10, |
| drawLatch = drawLatch |
| ) |
| } |
| |
| @Test |
| @SdkSuppress(minSdkVersion = Build.VERSION_CODES.O) |
| fun testCousinZOrder() { |
| rule.runOnUiThread { |
| activity.setContent { |
| FixedSize( |
| size = 30 |
| ) { |
| FixedSize(10, PaddingModifier(10)) { |
| FixedSize( |
| 10, |
| Modifier.zIndex(1f) |
| .background(Color.Green) |
| ) |
| } |
| FixedSize(30, Modifier.background(Color.Red)) |
| FixedSize(10, PaddingModifier(10)) { |
| FixedSize( |
| 10, |
| Modifier.background(Color.White) |
| .drawLatchModifier() |
| ) |
| } |
| } |
| } |
| } |
| rule.validateSquareColors( |
| outerColor = Color.Red, |
| innerColor = Color.White, |
| size = 10, |
| drawLatch = drawLatch |
| ) |
| } |
| |
| @Test |
| @SdkSuppress(minSdkVersion = Build.VERSION_CODES.O) |
| fun testCousinZOrder2() { |
| rule.runOnUiThread { |
| activity.setContent { |
| FixedSize( |
| size = 30 |
| ) { |
| FixedSize(10, PaddingModifier(10)) { |
| FixedSize( |
| 10, |
| Modifier.zIndex(1f) |
| .background(Color.Green) |
| ) |
| } |
| FixedSize( |
| 30, |
| Modifier.background(Color.Red) |
| .drawLatchModifier() |
| ) |
| } |
| } |
| } |
| rule.validateSquareColors( |
| outerColor = Color.Red, |
| innerColor = Color.Red, |
| size = 10, |
| drawLatch = drawLatch |
| ) |
| } |
| |
| @Test |
| @SdkSuppress(minSdkVersion = Build.VERSION_CODES.O) |
| fun testChangingZOrder() { |
| val state = mutableStateOf(0f) |
| val view = View(activity) |
| rule.runOnUiThread { |
| activity.setContent { |
| FixedSize( |
| size = 30 |
| ) { |
| FixedSize( |
| 10, PaddingModifier(10) |
| .zIndex(state.value) |
| .background(Color.Black) |
| ) |
| FixedSize( |
| 30, |
| Modifier.background(Color.Red) |
| .drawLatchModifier() |
| ) |
| FixedSize( |
| 10, |
| PaddingModifier(10).background(Color.White) |
| ) |
| } |
| } |
| activity.addContentView(view, ViewGroup.LayoutParams(1, 1)) |
| } |
| rule.validateSquareColors( |
| outerColor = Color.Red, |
| innerColor = Color.White, |
| size = 10, |
| drawLatch = drawLatch |
| ) |
| |
| val onDrawListener = object : |
| ViewTreeObserver.OnDrawListener { |
| override fun onDraw() { |
| drawLatch.countDown() |
| } |
| } |
| drawLatch = CountDownLatch(1) |
| rule.runOnUiThread { |
| view.viewTreeObserver.addOnDrawListener(onDrawListener) |
| state.value = 1f |
| view.invalidate() |
| } |
| |
| rule.validateSquareColors( |
| outerColor = Color.Red, |
| innerColor = Color.Black, |
| size = 10, |
| drawLatch = drawLatch |
| ) |
| drawLatch = CountDownLatch(1) |
| rule.runOnUiThread { |
| state.value = 0f |
| view.invalidate() |
| } |
| rule.validateSquareColors( |
| outerColor = Color.Red, |
| innerColor = Color.White, |
| size = 10, |
| drawLatch = drawLatch |
| ) |
| } |
| |
| @Test |
| @SdkSuppress(minSdkVersion = Build.VERSION_CODES.O) |
| fun testChangingZOrderReusingModifiers() { |
| val state = mutableStateOf(0f) |
| val zIndex = object : ZIndexModifier { |
| override val zIndex: Float |
| get() = state.value |
| } |
| val modifier1 = PaddingModifier(10) |
| .plus(zIndex) |
| .background(Color.White) |
| val modifier2 = Modifier.background(Color.Red) |
| .drawLatchModifier() |
| val view = View(activity) |
| rule.runOnUiThread { |
| activity.setContent { |
| FixedSize(size = 30) { |
| FixedSize(10, modifier1) |
| FixedSize(30, modifier2) |
| } |
| } |
| activity.addContentView(view, ViewGroup.LayoutParams(1, 1)) |
| } |
| rule.validateSquareColors( |
| outerColor = Color.Red, |
| innerColor = Color.Red, |
| size = 10, |
| drawLatch = drawLatch |
| ) |
| |
| val onDrawListener = object : |
| ViewTreeObserver.OnDrawListener { |
| override fun onDraw() { |
| drawLatch.countDown() |
| } |
| } |
| drawLatch = CountDownLatch(1) |
| rule.runOnUiThread { |
| view.viewTreeObserver.addOnDrawListener(onDrawListener) |
| state.value = 1f |
| view.invalidate() |
| } |
| |
| rule.validateSquareColors( |
| outerColor = Color.Red, |
| innerColor = Color.White, |
| size = 10, |
| drawLatch = drawLatch |
| ) |
| |
| drawLatch = CountDownLatch(1) |
| rule.runOnUiThread { |
| state.value = 0f |
| view.invalidate() |
| } |
| rule.validateSquareColors( |
| outerColor = Color.Red, |
| innerColor = Color.Red, |
| size = 10, |
| drawLatch = drawLatch |
| ) |
| } |
| |
| @Test |
| @SdkSuppress(minSdkVersion = Build.VERSION_CODES.O) |
| fun testChangingZOrderUncle() { |
| val state = mutableStateOf(0f) |
| val elevation = object : DrawLayerModifier { |
| override val shadowElevation: Float |
| get() = state.value |
| } |
| val view = View(activity) |
| rule.runOnUiThread { |
| activity.setContent { |
| FixedSize( |
| size = 30 |
| ) { |
| FixedSize(30) { |
| FixedSize( |
| 10, |
| PaddingModifier(10).plus(elevation).background(Color.Black) |
| ) |
| } |
| FixedSize( |
| 30, |
| Modifier.background(Color.Red) |
| .drawLatchModifier() |
| ) |
| FixedSize( |
| 10, |
| PaddingModifier(10) |
| .background(Color.White) |
| ) |
| } |
| } |
| activity.addContentView(view, ViewGroup.LayoutParams(1, 1)) |
| } |
| rule.validateSquareColors( |
| outerColor = Color.Red, |
| innerColor = Color.White, |
| size = 10, |
| drawLatch = drawLatch |
| ) |
| val onDrawListener = object : |
| ViewTreeObserver.OnDrawListener { |
| override fun onDraw() { |
| drawLatch.countDown() |
| } |
| } |
| drawLatch = CountDownLatch(1) |
| rule.runOnUiThread { |
| view.viewTreeObserver.addOnDrawListener(onDrawListener) |
| state.value = 1f |
| view.invalidate() |
| } |
| rule.validateSquareColors( |
| outerColor = Color.Red, |
| innerColor = Color.White, |
| size = 10, |
| drawLatch = drawLatch |
| ) |
| } |
| |
| @Test |
| @SdkSuppress(minSdkVersion = Build.VERSION_CODES.O) |
| fun testChangingReorderedChildSize() { |
| val size = mutableStateOf(10) |
| val view = View(activity) |
| rule.runOnUiThread { |
| activity.setContent { |
| AtLeastSize( |
| size = 30, |
| modifier = Modifier.background(Color.Red) |
| ) { |
| FixedSize( |
| size, |
| PaddingModifier(10) |
| .zIndex(1f) |
| .background(Color.White) |
| ) |
| FixedSize( |
| 30, |
| Modifier.background(Color.Red) |
| .drawLatchModifier() |
| ) |
| } |
| } |
| activity.addContentView(view, ViewGroup.LayoutParams(1, 1)) |
| } |
| rule.validateSquareColors( |
| outerColor = Color.Red, |
| innerColor = Color.White, |
| size = 10, |
| drawLatch = drawLatch |
| ) |
| val onDrawListener = object : |
| ViewTreeObserver.OnDrawListener { |
| override fun onDraw() { |
| drawLatch.countDown() |
| } |
| } |
| drawLatch = CountDownLatch(1) |
| rule.runOnUiThread { |
| view.viewTreeObserver.addOnDrawListener(onDrawListener) |
| size.value = 20 |
| view.invalidate() |
| } |
| rule.validateSquareColors( |
| outerColor = Color.Red, |
| innerColor = Color.White, |
| size = 20, |
| totalSize = 40, |
| drawLatch = drawLatch |
| ) |
| } |
| |
| @Test |
| @SdkSuppress(minSdkVersion = Build.VERSION_CODES.O) |
| fun testInvalidateReorderedChild() { |
| val color = mutableStateOf(Color.Red) |
| rule.runOnUiThread { |
| activity.setContent { |
| FixedSize(size = 30) { |
| FixedSize( |
| 10, |
| PaddingModifier(10) |
| .zIndex(1f) |
| .background(Color.White) |
| ) |
| FixedSize( |
| 30, |
| Modifier.background(color.value) |
| .drawLatchModifier() |
| ) |
| } |
| } |
| } |
| rule.validateSquareColors( |
| outerColor = Color.Red, |
| innerColor = Color.White, |
| size = 10, |
| drawLatch = drawLatch |
| ) |
| drawLatch = CountDownLatch(1) |
| rule.runOnUiThread { |
| color.value = Color.Blue |
| } |
| rule.validateSquareColors( |
| outerColor = Color.Blue, |
| innerColor = Color.White, |
| size = 10, |
| drawLatch = drawLatch |
| ) |
| } |
| |
| @Test |
| @SdkSuppress(minSdkVersion = Build.VERSION_CODES.O) |
| fun testFirstElevationIsUsed() { |
| rule.runOnUiThread { |
| activity.setContent { |
| FixedSize( |
| size = 30 |
| ) { |
| FixedSize( |
| 10, PaddingModifier(10) |
| .zIndex(3f) |
| .zIndex(1f) |
| .background(Color.White) |
| ) |
| FixedSize( |
| 30, Modifier.zIndex(2f) |
| .background(Color.Red) |
| .drawLatchModifier() |
| ) |
| } |
| } |
| } |
| rule.validateSquareColors( |
| outerColor = Color.Red, |
| innerColor = Color.White, |
| size = 10, |
| drawLatch = drawLatch |
| ) |
| } |
| |
| @Test |
| fun elevationWithinModifier() { |
| val elevation = mutableStateOf(0f) |
| val color = mutableStateOf(Color.Blue) |
| val underColor = mutableStateOf(Color.Transparent) |
| val modifier = Modifier.drawLayer() |
| .background(underColor) |
| .drawLatchModifier() |
| .plus(object : DrawLayerModifier { |
| override val shadowElevation: Float |
| get() { |
| return elevation.value |
| } |
| }) |
| .background(color) |
| |
| rule.runOnUiThread { |
| activity.setContent { |
| FixedSize(30, modifier) |
| } |
| } |
| |
| assertTrue(drawLatch.await(1, TimeUnit.SECONDS)) |
| |
| drawLatch = CountDownLatch(1) |
| |
| rule.runOnUiThread { |
| color.value = Color.Red |
| } |
| |
| assertFalse(drawLatch.await(200, TimeUnit.MILLISECONDS)) |
| |
| drawLatch = CountDownLatch(1) |
| rule.runOnUiThread { |
| elevation.value = 1f |
| } |
| |
| assertTrue(drawLatch.await(1, TimeUnit.SECONDS)) |
| |
| drawLatch = CountDownLatch(1) |
| |
| rule.runOnUiThread { |
| elevation.value = 2f // elevation was already 1, so it doesn't need to enableZ again |
| } |
| assertFalse(drawLatch.await(200, TimeUnit.MILLISECONDS)) |
| |
| rule.runOnUiThread { |
| elevation.value = 0f // going to 0 doesn't trigger invalidation |
| } |
| assertFalse(drawLatch.await(200, TimeUnit.MILLISECONDS)) |
| |
| rule.runOnUiThread { |
| elevation.value = 1f // going to 1 won't invalidate because it was last drawn with Z |
| } |
| assertFalse(drawLatch.await(200, TimeUnit.MILLISECONDS)) |
| |
| rule.runOnUiThread { |
| elevation.value = 0f |
| underColor.value = Color.Black |
| } |
| |
| assertTrue(drawLatch.await(1, TimeUnit.SECONDS)) |
| |
| drawLatch = CountDownLatch(1) |
| |
| rule.runOnUiThread { |
| elevation.value = 1f |
| } |
| assertTrue(drawLatch.await(1, TimeUnit.SECONDS)) |
| } |
| |
| @Test |
| @SdkSuppress(minSdkVersion = Build.VERSION_CODES.O) |
| fun testInvalidateParentOfReorderedChild() { |
| val color = mutableStateOf(Color.Red) |
| rule.runOnUiThread { |
| activity.setContent { |
| FixedSize(size = 30) { |
| FixedSize( |
| 10, |
| PaddingModifier(10) |
| .zIndex(1f) |
| .background(Color.White) |
| ) |
| FixedSize(30, Modifier.background(color.value).drawLatchModifier()) |
| } |
| } |
| } |
| rule.validateSquareColors( |
| outerColor = Color.Red, |
| innerColor = Color.White, |
| size = 10, |
| drawLatch = drawLatch |
| ) |
| drawLatch = CountDownLatch(1) |
| rule.runOnUiThread { |
| color.value = Color.Blue |
| } |
| rule.validateSquareColors( |
| outerColor = Color.Blue, |
| innerColor = Color.White, |
| size = 10, |
| drawLatch = drawLatch |
| ) |
| } |
| |
| @Test |
| @SdkSuppress(minSdkVersion = Build.VERSION_CODES.O) |
| fun testShadowSizeIsNotCausingReorder() { |
| rule.runOnUiThread { |
| activity.setContent { |
| FixedSize( |
| size = 30 |
| ) { |
| FixedSize( |
| 10, PaddingModifier(10) |
| .drawLayer(shadowElevation = 1f) |
| .background(Color.White) |
| ) |
| FixedSize( |
| 30, Modifier.drawLayer() |
| .background(Color.Red) |
| .drawLatchModifier() |
| ) |
| } |
| } |
| } |
| rule.validateSquareColors( |
| outerColor = Color.Red, |
| innerColor = Color.Red, |
| size = 10, |
| drawLatch = drawLatch |
| ) |
| } |
| |
| fun Modifier.drawLatchModifier() = drawBehind { drawLatch.countDown() } |
| } |
| |
| private fun Modifier.background( |
| color: State<Color> |
| ) = drawBehind { |
| if (color.value != Color.Transparent) { |
| drawRect(color.value) |
| } |
| } |
| |
| @Composable |
| fun FixedSize( |
| size: State<Int>, |
| modifier: Modifier = Modifier, |
| children: @Composable () -> Unit = emptyContent() |
| ) { |
| Layout(children = children, modifier = modifier) { measurables, _ -> |
| val newConstraints = Constraints.fixed(size.value, size.value) |
| val placeables = measurables.map { m -> |
| m.measure(newConstraints) |
| } |
| layout(size.value, size.value) { |
| placeables.forEach { child -> |
| child.place(0, 0) |
| } |
| } |
| } |
| } |