| /* |
| * 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.text |
| |
| import androidx.test.filters.SmallTest |
| import androidx.test.platform.app.InstrumentationRegistry |
| import androidx.ui.text.font.asFontFamily |
| import androidx.ui.unit.Density |
| import androidx.ui.unit.TextUnit |
| import androidx.ui.unit.sp |
| import com.google.common.truth.Truth.assertThat |
| import org.junit.Test |
| import org.junit.runner.RunWith |
| import org.junit.runners.JUnit4 |
| |
| @RunWith(JUnit4::class) |
| @SmallTest |
| class ParagraphIntrinsicIntegrationTest { |
| private val fontFamilyMeasureFont = FontTestData.BASIC_MEASURE_FONT.asFontFamily() |
| private val context = InstrumentationRegistry.getInstrumentation().context |
| private val defaultDensity = Density(density = 1f) |
| |
| @Test |
| fun maxIntrinsicWidth_empty_string_is_zero() { |
| val paragraphIntrinsics = paragraphIntrinsics(text = "") |
| |
| assertThat(paragraphIntrinsics.maxIntrinsicWidth).isZero() |
| } |
| |
| @Test |
| fun maxIntrinsicWidth_with_rtl_string() { |
| with(defaultDensity) { |
| val text = "\u05D0\u05D1\u05D2" |
| val fontSize = 50.sp |
| |
| val paragraphIntrinsics = paragraphIntrinsics( |
| text = text, |
| fontSize = fontSize |
| ) |
| |
| assertThat(paragraphIntrinsics.maxIntrinsicWidth) |
| .isEqualTo(text.length * fontSize.toPx()) |
| } |
| } |
| |
| @Test |
| fun maxIntrinsicWidth_with_ltr_string() { |
| with(defaultDensity) { |
| val text = "abc" |
| val fontSize = 50.sp |
| |
| val paragraphIntrinsics = paragraphIntrinsics( |
| text = text, |
| fontSize = fontSize) |
| |
| assertThat(paragraphIntrinsics.maxIntrinsicWidth) |
| .isEqualTo(text.length * fontSize.toPx()) |
| } |
| } |
| |
| @Test |
| fun maxIntrinsicWidth_with_line_feed() { |
| with(defaultDensity) { |
| val text = "abc\nabc" |
| val fontSize = 50.sp |
| val paragraphIntrinsics = paragraphIntrinsics( |
| text = text, |
| fontSize = fontSize |
| ) |
| |
| assertThat(paragraphIntrinsics.maxIntrinsicWidth) |
| .isEqualTo(text.indexOf('\n') * fontSize.toPx()) |
| } |
| } |
| |
| @Test |
| fun maxInstrinsicWidth_withStyledText() { |
| with(defaultDensity) { |
| val text = "a bb ccc" |
| val fontSize = 12.sp |
| val styledFontSize = 24.sp |
| val paragraph = paragraphIntrinsics( |
| text = text, |
| fontSize = fontSize, |
| spanStyles = listOf( |
| SpanStyleRange( |
| item = SpanStyle(fontSize = styledFontSize), |
| start = "a ".length, |
| end = "a bb ".length |
| ) |
| ) |
| ) |
| |
| // since "bb " is double font size, the whole width should be the text size, and the |
| // additional width resulting from the "bb " length. |
| val expectedWidth = (text.length + "bb ".length) * fontSize.toPx() |
| assertThat(paragraph.maxIntrinsicWidth).isEqualTo(expectedWidth) |
| } |
| } |
| |
| @Test |
| fun minIntrinsicWidth_empty_string_is_zero() { |
| val paragraphIntrinsics = paragraphIntrinsics(text = "") |
| |
| assertThat(paragraphIntrinsics.minIntrinsicWidth).isZero() |
| } |
| |
| @Test |
| fun minIntrinsicWidth_with_rtl_string() { |
| with(defaultDensity) { |
| val text = "\u05D0\u05D1\u05D2" |
| val fontSize = 50.sp |
| |
| val paragraphIntrinsics = paragraphIntrinsics( |
| text = text, |
| fontSize = fontSize |
| ) |
| |
| assertThat(paragraphIntrinsics.minIntrinsicWidth) |
| .isEqualTo(text.length * fontSize.toPx()) |
| } |
| } |
| |
| @Test |
| fun minIntrinsicWidth_with_ltr_string() { |
| with(defaultDensity) { |
| val text = "abc" |
| val fontSize = 50.sp |
| |
| val paragraphIntrinsics = paragraphIntrinsics( |
| text = text, |
| fontSize = fontSize |
| ) |
| |
| assertThat(paragraphIntrinsics.minIntrinsicWidth) |
| .isEqualTo(text.length * fontSize.toPx()) |
| } |
| } |
| |
| @Test |
| fun minInstrinsicWidth_returns_longest_word_width() { |
| with(defaultDensity) { |
| // create words with length 1, 2, 3... 50; and append all with space. |
| val maxWordLength = 50 |
| val text = (1..maxWordLength).fold("") { string, next -> |
| string + "a".repeat(next) + " " |
| } |
| val fontSize = 12.sp |
| val paragraph = paragraphIntrinsics( |
| text = text, |
| fontSize = fontSize |
| ) |
| |
| // +1 is for the white space |
| val expectedWidth = (maxWordLength + 1) * fontSize.toPx() |
| assertThat(paragraph.minIntrinsicWidth).isEqualTo(expectedWidth) |
| } |
| } |
| |
| @Test |
| fun minInstrinsicWidth_withStyledText() { |
| with(defaultDensity) { |
| val text = "a bb ccc" |
| val fontSize = 12.sp |
| val styledFontSize = 24.sp |
| val paragraph = paragraphIntrinsics( |
| text = text, |
| fontSize = fontSize, |
| spanStyles = listOf( |
| SpanStyleRange( |
| item = SpanStyle(fontSize = styledFontSize), |
| start = "a".length, |
| end = "a bb ".length |
| ) |
| ) |
| ) |
| |
| val expectedWidth = "bb ".length * styledFontSize.toPx() |
| assertThat(paragraph.minIntrinsicWidth).isEqualTo(expectedWidth) |
| } |
| } |
| |
| private fun paragraphIntrinsics( |
| text: String = "", |
| style: TextStyle? = null, |
| fontSize: TextUnit = 14.sp, |
| spanStyles: List<AnnotatedString.Range<SpanStyle>> = listOf() |
| ): ParagraphIntrinsics { |
| return ParagraphIntrinsics( |
| text = text, |
| spanStyles = spanStyles, |
| placeholders = listOf(), |
| style = TextStyle( |
| fontFamily = fontFamilyMeasureFont, |
| fontSize = fontSize |
| ).merge(style), |
| density = defaultDensity, |
| resourceLoader = TestFontResourceLoader(context) |
| ) |
| } |
| } |