| /* |
| * 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.core.test |
| |
| import android.graphics.Bitmap |
| import android.os.Build |
| import androidx.compose.Composable |
| import androidx.compose.State |
| import androidx.compose.mutableStateOf |
| import androidx.test.filters.SdkSuppress |
| import androidx.test.filters.SmallTest |
| import androidx.ui.core.Modifier |
| import androidx.ui.core.drawBehind |
| import androidx.ui.core.drawLayer |
| import androidx.ui.core.drawShadow |
| import androidx.ui.core.setContent |
| import androidx.ui.framework.test.TestActivity |
| import androidx.compose.ui.geometry.Size |
| import androidx.compose.ui.geometry.toRect |
| import androidx.compose.ui.graphics.Color |
| import androidx.compose.ui.graphics.Outline |
| import androidx.compose.ui.graphics.Shape |
| import androidx.compose.ui.graphics.luminance |
| import androidx.ui.unit.Density |
| import androidx.ui.unit.Dp |
| import androidx.ui.unit.dp |
| import org.junit.Assert.assertEquals |
| import org.junit.Assert.assertNotEquals |
| 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 DrawShadowTest { |
| |
| @Suppress("DEPRECATION") |
| @get:Rule |
| val rule = androidx.test.rule.ActivityTestRule<TestActivity>(TestActivity::class.java) |
| private lateinit var activity: TestActivity |
| private lateinit var drawLatch: CountDownLatch |
| |
| private val rectShape = object : Shape { |
| override fun createOutline(size: Size, density: Density): Outline = |
| Outline.Rectangle(size.toRect()) |
| } |
| |
| @Before |
| fun setup() { |
| activity = rule.activity |
| activity.hasFocusLatch.await(5, TimeUnit.SECONDS) |
| drawLatch = CountDownLatch(1) |
| } |
| |
| @SdkSuppress(minSdkVersion = Build.VERSION_CODES.O) |
| @Test |
| fun shadowDrawn() { |
| rule.runOnUiThreadIR { |
| activity.setContent { |
| ShadowContainer() |
| } |
| } |
| |
| assertTrue(drawLatch.await(1, TimeUnit.SECONDS)) |
| takeScreenShot(12).apply { |
| hasShadow() |
| } |
| } |
| |
| @SdkSuppress(minSdkVersion = Build.VERSION_CODES.O) |
| @Test |
| fun shadowDrawnInsideRenderNode() { |
| rule.runOnUiThreadIR { |
| activity.setContent { |
| ShadowContainer(modifier = Modifier.drawLayer()) |
| } |
| } |
| |
| assertTrue(drawLatch.await(1, TimeUnit.SECONDS)) |
| takeScreenShot(12).apply { |
| hasShadow() |
| } |
| } |
| |
| @SdkSuppress(minSdkVersion = Build.VERSION_CODES.O) |
| @Test |
| fun switchFromShadowToNoShadow() { |
| val elevation = mutableStateOf(0.dp) |
| |
| rule.runOnUiThreadIR { |
| activity.setContent { |
| ShadowContainer(elevation) |
| } |
| } |
| assertTrue(drawLatch.await(1, TimeUnit.SECONDS)) |
| |
| rule.runOnUiThreadIR { |
| elevation.value = 0.dp |
| } |
| |
| takeScreenShot(12).apply { |
| assertEquals(color(5, 11), Color.White) |
| } |
| } |
| |
| @SdkSuppress(minSdkVersion = Build.VERSION_CODES.O) |
| @Test |
| fun switchFromNoShadowToShadowWithNestedRepaintBoundaries() { |
| val elevation = mutableStateOf(0.dp) |
| |
| rule.runOnUiThreadIR { |
| activity.setContent { |
| ShadowContainer(elevation, modifier = Modifier.drawLayer(clip = true)) |
| } |
| } |
| assertTrue(drawLatch.await(1, TimeUnit.SECONDS)) |
| |
| rule.runOnUiThreadIR { |
| elevation.value = 12.dp |
| } |
| |
| takeScreenShot(12).apply { |
| hasShadow() |
| } |
| } |
| |
| @SdkSuppress(minSdkVersion = Build.VERSION_CODES.O) |
| @Test |
| fun opacityAppliedForTheShadow() { |
| rule.runOnUiThreadIR { |
| activity.setContent { |
| AtLeastSize(size = 12, modifier = background(Color.White)) { |
| AtLeastSize( |
| size = 10, |
| modifier = Modifier.drawShadow(4.dp, rectShape, opacity = 0.5f) |
| ) { |
| } |
| } |
| } |
| } |
| |
| assertTrue(drawLatch.await(1, TimeUnit.SECONDS)) |
| takeScreenShot(12).apply { |
| val shadowColor = color(width / 2, height - 1) |
| // assert the shadow is still visible |
| assertNotEquals(shadowColor, Color.White) |
| // but the shadow is not as dark as it would be without opacity. |
| // with full opacity it is around 0.85, with 50% opacity it is 0.96 |
| assertTrue(shadowColor.luminance() > 0.94f) |
| } |
| } |
| |
| @SdkSuppress(minSdkVersion = Build.VERSION_CODES.O) |
| @Test |
| fun emitShadowLater() { |
| val model = mutableStateOf(false) |
| |
| rule.runOnUiThreadIR { |
| activity.setContent { |
| AtLeastSize(size = 12, modifier = background(Color.White)) { |
| val shadow = if (model.value) { |
| Modifier.drawShadow(8.dp, rectShape) |
| } else { |
| Modifier |
| } |
| AtLeastSize(size = 10, modifier = shadow) { |
| } |
| } |
| } |
| } |
| assertTrue(drawLatch.await(1, TimeUnit.SECONDS)) |
| |
| drawLatch = CountDownLatch(1) |
| rule.runOnUiThreadIR { |
| model.value = true |
| } |
| |
| takeScreenShot(12).apply { |
| hasShadow() |
| } |
| } |
| |
| @Composable |
| private fun ShadowContainer( |
| elevation: State<Dp> = mutableStateOf(8.dp), |
| modifier: Modifier = Modifier |
| ) { |
| AtLeastSize(size = 12, modifier = modifier + background(Color.White)) { |
| AtLeastSize( |
| size = 10, |
| modifier = Modifier.drawShadow(elevation = elevation.value, shape = rectShape) |
| ) { |
| } |
| } |
| } |
| |
| private fun Bitmap.hasShadow() { |
| assertNotEquals(color(width / 2, height - 1), Color.White) |
| } |
| |
| private fun background(color: Color) = Modifier.drawBehind { |
| drawRect(color) |
| drawLatch.countDown() |
| } |
| |
| private fun takeScreenShot(width: Int, height: Int = width): Bitmap { |
| val bitmap = rule.waitAndScreenShot() |
| assertEquals(width, bitmap.width) |
| assertEquals(height, bitmap.height) |
| return bitmap |
| } |
| } |