| /* |
| * 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.compose.foundation.textfield |
| |
| import android.content.Context |
| import android.graphics.Typeface |
| import androidx.compose.foundation.layout.Box |
| import androidx.compose.foundation.layout.requiredWidth |
| import androidx.compose.foundation.text.CoreTextField |
| import androidx.compose.foundation.text.TEST_FONT |
| import androidx.compose.foundation.text.heightInLines |
| import androidx.compose.runtime.Composable |
| import androidx.compose.runtime.CompositionLocalProvider |
| import androidx.compose.ui.Modifier |
| import androidx.compose.ui.layout.onGloballyPositioned |
| import androidx.compose.ui.platform.InspectableValue |
| import androidx.compose.ui.platform.LocalDensity |
| import androidx.compose.ui.platform.LocalFontFamilyResolver |
| import androidx.compose.ui.platform.ValueElement |
| import androidx.compose.ui.platform.isDebugInspectorInfoEnabled |
| import androidx.compose.ui.test.junit4.createComposeRule |
| import androidx.compose.ui.text.ExperimentalTextApi |
| import androidx.compose.ui.text.TextLayoutResult |
| import androidx.compose.ui.text.TextStyle |
| import androidx.compose.ui.text.font.AndroidFont |
| import androidx.compose.ui.text.font.FontFamily |
| import androidx.compose.ui.text.font.FontLoadingStrategy |
| import androidx.compose.ui.text.font.FontStyle |
| import androidx.compose.ui.text.font.FontWeight |
| import androidx.compose.ui.text.font.createFontFamilyResolver |
| import androidx.compose.ui.text.input.TextFieldValue |
| import androidx.compose.ui.unit.Density |
| import androidx.compose.ui.unit.dp |
| import androidx.compose.ui.unit.sp |
| import androidx.test.ext.junit.runners.AndroidJUnit4 |
| import androidx.test.filters.MediumTest |
| import androidx.test.platform.app.InstrumentationRegistry |
| import com.google.common.truth.Truth.assertThat |
| import java.util.concurrent.CountDownLatch |
| import java.util.concurrent.TimeUnit |
| import kotlinx.coroutines.CompletableDeferred |
| import kotlinx.coroutines.ExperimentalCoroutinesApi |
| import kotlinx.coroutines.test.UnconfinedTestDispatcher |
| import org.junit.After |
| import org.junit.Before |
| import org.junit.Rule |
| import org.junit.Test |
| import org.junit.runner.RunWith |
| |
| @MediumTest |
| @RunWith(AndroidJUnit4::class) |
| class HeightInLinesModifierTest { |
| |
| private val longText = "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do " + |
| "eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam," + |
| " quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. " + |
| "Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu " + |
| "fugiat nulla pariatur." |
| |
| private val context = InstrumentationRegistry.getInstrumentation().context |
| |
| @get:Rule |
| val rule = createComposeRule() |
| |
| @Before |
| fun before() { |
| isDebugInspectorInfoEnabled = true |
| } |
| |
| @After |
| fun after() { |
| isDebugInspectorInfoEnabled = false |
| } |
| |
| @Test |
| fun minLines_shortInputText() { |
| var subjectLayout: TextLayoutResult? = null |
| var subjectHeight: Int? = null |
| var twoLineHeight: Int? = null |
| val positionedLatch = CountDownLatch(1) |
| val twoLinePositionedLatch = CountDownLatch(1) |
| |
| rule.setContent { |
| HeightObservingText( |
| onGlobalHeightPositioned = { |
| subjectHeight = it |
| positionedLatch.countDown() |
| }, |
| onTextLayoutResult = { |
| subjectLayout = it |
| }, |
| textFieldValue = TextFieldValue("abc"), |
| minLines = 2 |
| ) |
| HeightObservingText( |
| onGlobalHeightPositioned = { |
| twoLineHeight = it |
| twoLinePositionedLatch.countDown() |
| }, |
| onTextLayoutResult = {}, |
| textFieldValue = TextFieldValue("1\n2"), |
| minLines = 2 |
| ) |
| } |
| assertThat(positionedLatch.await(1, TimeUnit.SECONDS)).isTrue() |
| assertThat(twoLinePositionedLatch.await(1, TimeUnit.SECONDS)).isTrue() |
| |
| rule.runOnIdle { |
| assertThat(subjectLayout).isNotNull() |
| assertThat(subjectLayout!!.lineCount).isEqualTo(1) |
| assertThat(subjectHeight!!).isEqualTo(twoLineHeight) |
| } |
| } |
| |
| @Test |
| fun maxLines_shortInputText() { |
| val (textLayoutResult, height) = setTextFieldWithMaxLines( |
| TextFieldValue("abc"), |
| maxLines = 5 |
| ) |
| |
| rule.runOnIdle { |
| assertThat(textLayoutResult).isNotNull() |
| assertThat(textLayoutResult!!.lineCount).isEqualTo(1) |
| assertThat(textLayoutResult.size.height).isEqualTo(height) |
| } |
| } |
| |
| @Test |
| fun maxLines_notApplied_infiniteMaxLines() { |
| val (textLayoutResult, height) = |
| setTextFieldWithMaxLines(TextFieldValue(longText), Int.MAX_VALUE) |
| |
| rule.runOnIdle { |
| assertThat(textLayoutResult).isNotNull() |
| assertThat(textLayoutResult!!.size.height).isEqualTo(height) |
| } |
| } |
| |
| @Test(expected = IllegalArgumentException::class) |
| fun minLines_invalidValue() { |
| rule.setContent { |
| CoreTextField( |
| value = TextFieldValue(), |
| onValueChange = {}, |
| modifier = Modifier.heightInLines(textStyle = TextStyle.Default, minLines = 0) |
| ) |
| } |
| } |
| |
| @Test(expected = IllegalArgumentException::class) |
| fun maxLines_invalidValue() { |
| rule.setContent { |
| CoreTextField( |
| value = TextFieldValue(), |
| onValueChange = {}, |
| modifier = Modifier.heightInLines(textStyle = TextStyle.Default, maxLines = 0) |
| ) |
| } |
| } |
| |
| @Test(expected = IllegalArgumentException::class) |
| fun minLines_greaterThan_maxLines_invalidValue() { |
| rule.setContent { |
| CoreTextField( |
| value = TextFieldValue(), |
| onValueChange = {}, |
| modifier = Modifier.heightInLines( |
| textStyle = TextStyle.Default, |
| minLines = 2, |
| maxLines = 1 |
| ) |
| ) |
| } |
| } |
| |
| @Test |
| fun minLines_longInputText() { |
| val (textLayoutResult, height) = setTextFieldWithMaxLines( |
| TextFieldValue(longText), |
| minLines = 2 |
| ) |
| |
| rule.runOnIdle { |
| assertThat(textLayoutResult).isNotNull() |
| // should be in the 20s, but use this to create invariant for the next assertion |
| assertThat(textLayoutResult!!.lineCount).isGreaterThan(2) |
| assertThat(textLayoutResult.size.height).isEqualTo(height) |
| } |
| } |
| |
| @Test |
| fun maxLines_longInputText() { |
| var subjectLayout: TextLayoutResult? = null |
| var subjectHeight: Int? = null |
| var twoLineHeight: Int? = null |
| val positionedLatch = CountDownLatch(1) |
| val twoLinePositionedLatch = CountDownLatch(1) |
| |
| rule.setContent { |
| HeightObservingText( |
| onGlobalHeightPositioned = { |
| subjectHeight = it |
| positionedLatch.countDown() |
| }, |
| onTextLayoutResult = { |
| subjectLayout = it |
| }, |
| textFieldValue = TextFieldValue(longText), |
| maxLines = 2 |
| ) |
| HeightObservingText( |
| onGlobalHeightPositioned = { |
| twoLineHeight = it |
| twoLinePositionedLatch.countDown() |
| }, |
| onTextLayoutResult = {}, |
| textFieldValue = TextFieldValue("1\n2"), |
| maxLines = 2 |
| ) |
| } |
| assertThat(positionedLatch.await(1, TimeUnit.SECONDS)).isTrue() |
| assertThat(twoLinePositionedLatch.await(1, TimeUnit.SECONDS)).isTrue() |
| |
| rule.runOnIdle { |
| assertThat(subjectLayout).isNotNull() |
| // should be in the 20s, but use this to create invariant for the next assertion |
| assertThat(subjectLayout!!.lineCount).isGreaterThan(2) |
| assertThat(subjectHeight!!).isEqualTo(twoLineHeight) |
| } |
| } |
| |
| @OptIn(ExperimentalTextApi::class, ExperimentalCoroutinesApi::class) |
| @Test |
| fun asyncFontLoad_changesLineHeight() { |
| val testDispatcher = UnconfinedTestDispatcher() |
| val resolver = createFontFamilyResolver(context, testDispatcher) |
| |
| val typefaceDeferred = CompletableDeferred<Typeface>() |
| val asyncLoader = object : AndroidFont.TypefaceLoader { |
| override fun loadBlocking(context: Context, font: AndroidFont): Typeface = |
| TODO("Not yet implemented") |
| |
| override suspend fun awaitLoad(context: Context, font: AndroidFont): Typeface { |
| return typefaceDeferred.await() |
| } |
| } |
| val fontFamily = FontFamily( |
| object : AndroidFont(FontLoadingStrategy.Async, asyncLoader) { |
| override val weight: FontWeight = FontWeight.Normal |
| override val style: FontStyle = FontStyle.Normal |
| }, |
| TEST_FONT |
| ) |
| |
| val heights = mutableListOf<Int>() |
| |
| rule.setContent { |
| CompositionLocalProvider( |
| LocalFontFamilyResolver provides resolver, |
| LocalDensity provides Density(1.0f, 1f) |
| ) { |
| HeightObservingText( |
| onGlobalHeightPositioned = { |
| heights.add(it) |
| }, |
| onTextLayoutResult = {}, |
| textFieldValue = TextFieldValue(longText), |
| maxLines = 10, |
| textStyle = TextStyle.Default.copy( |
| fontFamily = fontFamily, |
| fontSize = 80.sp |
| ) |
| ) |
| } |
| } |
| |
| val before = heights.toList() |
| typefaceDeferred.complete(Typeface.create("cursive", Typeface.BOLD_ITALIC)) |
| |
| rule.runOnIdle { |
| assertThat(heights.size).isGreaterThan(before.size) |
| assertThat(heights.distinct().size).isGreaterThan(before.distinct().size) |
| } |
| } |
| |
| @Test |
| fun testInspectableValue() { |
| val modifier = Modifier.heightInLines( |
| textStyle = TextStyle.Default, |
| minLines = 5, |
| maxLines = 10 |
| ) as InspectableValue |
| assertThat(modifier.nameFallback).isEqualTo("heightInLines") |
| assertThat(modifier.inspectableElements.asIterable()).containsExactly( |
| ValueElement("minLines", 5), |
| ValueElement("maxLines", 10), |
| ValueElement("textStyle", TextStyle.Default) |
| ) |
| } |
| |
| private fun setTextFieldWithMaxLines( |
| textFieldValue: TextFieldValue, |
| minLines: Int = 1, |
| maxLines: Int = Int.MAX_VALUE |
| ): Pair<TextLayoutResult?, Int?> { |
| var textLayoutResult: TextLayoutResult? = null |
| var height: Int? = null |
| val positionedLatch = CountDownLatch(1) |
| |
| rule.setContent { |
| HeightObservingText( |
| onGlobalHeightPositioned = { |
| height = it |
| positionedLatch.countDown() |
| }, |
| onTextLayoutResult = { |
| textLayoutResult = it |
| }, |
| textFieldValue = textFieldValue, |
| minLines = minLines, |
| maxLines = maxLines |
| ) |
| } |
| assertThat(positionedLatch.await(1, TimeUnit.SECONDS)).isTrue() |
| |
| return Pair(textLayoutResult, height) |
| } |
| |
| @Composable |
| private fun HeightObservingText( |
| onGlobalHeightPositioned: (Int) -> Unit, |
| onTextLayoutResult: (TextLayoutResult) -> Unit, |
| textFieldValue: TextFieldValue, |
| minLines: Int = 1, |
| maxLines: Int = Int.MAX_VALUE, |
| textStyle: TextStyle = TextStyle.Default |
| ) { |
| Box( |
| Modifier.onGloballyPositioned { |
| onGlobalHeightPositioned(it.size.height) |
| } |
| ) { |
| CoreTextField( |
| value = textFieldValue, |
| onValueChange = {}, |
| textStyle = textStyle, |
| modifier = Modifier |
| .requiredWidth(100.dp) |
| .heightInLines( |
| textStyle = textStyle, |
| minLines = minLines, |
| maxLines = maxLines |
| ), |
| onTextLayout = onTextLayoutResult |
| ) |
| } |
| } |
| } |
