1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.widget.cts; 18 19 import static android.view.Gravity.CENTER; 20 import static android.view.Gravity.LEFT; 21 import static android.view.Gravity.NO_GRAVITY; 22 import static android.view.Gravity.RIGHT; 23 import static android.view.View.TEXT_ALIGNMENT_INHERIT; 24 import static android.widget.TextView.TEXT_ALIGNMENT_TEXT_END; 25 import static android.widget.TextView.TEXT_ALIGNMENT_TEXT_START; 26 import static android.widget.TextView.TEXT_ALIGNMENT_VIEW_END; 27 import static android.widget.TextView.TEXT_ALIGNMENT_VIEW_START; 28 29 import static org.junit.Assert.assertEquals; 30 31 import android.app.Activity; 32 import android.app.Instrumentation; 33 import android.support.test.InstrumentationRegistry; 34 import android.support.test.filters.MediumTest; 35 import android.support.test.rule.ActivityTestRule; 36 import android.support.test.runner.AndroidJUnit4; 37 import android.util.TypedValue; 38 import android.view.ViewGroup; 39 import android.widget.FrameLayout; 40 41 import com.android.compatibility.common.util.PollingCheck; 42 43 import org.junit.Before; 44 import org.junit.Rule; 45 import org.junit.Test; 46 import org.junit.runner.RunWith; 47 48 @MediumTest 49 @RunWith(AndroidJUnit4.class) 50 public class TextViewFadingEdgeTest { 51 private Activity mActivity; 52 53 @Rule 54 public ActivityTestRule<EmptyCtsActivity> mActivityRule = 55 new ActivityTestRule<>(EmptyCtsActivity.class); 56 57 public static final float DELTA = 0.01f; 58 private static final String LONG_RTL_STRING = " "; 59 private static final String LONG_LTR_STRING = "start start1 middle middle1 end end1"; 60 private static final String SHORT_RTL_STRING = ""; 61 private static final String SHORT_LTR_STRING = "s"; 62 public static final int ANY_PADDING = 20; 63 public static final int ANY_FADE_LENGTH = 20; 64 public static final int TEXT_SIZE = 20; 65 public static final int WIDTH = 100; 66 67 private static final TestCase[] TEST_DATA = { 68 // no fade - fading disabled 69 new TestCase("Should not fade when text:empty, fading:disabled", 70 null, false, NO_GRAVITY, TEXT_ALIGNMENT_INHERIT, 0f, 0f), 71 new TestCase("Should not fade when text:short, dir:LTR, fading:disabled", 72 SHORT_LTR_STRING, false, NO_GRAVITY, TEXT_ALIGNMENT_INHERIT, 0f, 0f), 73 new TestCase("Should not fade when text:short, dir:RTL, fading:disabled", 74 SHORT_RTL_STRING, false, NO_GRAVITY, TEXT_ALIGNMENT_INHERIT, 0f, 0f), 75 new TestCase("Should not fade when text:long , dir:LTR, fading:disabled", 76 LONG_LTR_STRING, false, NO_GRAVITY, TEXT_ALIGNMENT_INHERIT, 0f, 0f), 77 new TestCase("Should not fade when text:long , dir:RTL, fading:disabled", 78 LONG_RTL_STRING, false, NO_GRAVITY, TEXT_ALIGNMENT_INHERIT, 0f, 0f), 79 new TestCase("Should not fade when text:long, dir:LTR, scroll:middle", 80 LONG_LTR_STRING, false, NO_GRAVITY, TEXT_ALIGNMENT_INHERIT, true, 0f, 0f), 81 new TestCase("Should not fade when text:long, dir:RTL, scroll:middle", 82 LONG_RTL_STRING, false, NO_GRAVITY, TEXT_ALIGNMENT_INHERIT, true, 0f, 0f), 83 84 // no fade - text is shorter than view width 85 new TestCase("Should not fade when text:empty", 86 null, true, NO_GRAVITY, TEXT_ALIGNMENT_INHERIT, 0f, 0f), 87 new TestCase("Should not fade when text:short, dir:LTR", 88 SHORT_LTR_STRING, true, NO_GRAVITY, TEXT_ALIGNMENT_INHERIT, 0f, 0f), 89 new TestCase("Should not fade when text:short, dir:LTR, gravity:center", 90 SHORT_LTR_STRING, true, CENTER, TEXT_ALIGNMENT_INHERIT, 0f, 0f), 91 new TestCase("Should not fade when text:short, dir:RTL", 92 SHORT_RTL_STRING, true, NO_GRAVITY, TEXT_ALIGNMENT_INHERIT, 0f, 0f), 93 new TestCase("Should not fade when text:short, dir:RTL, gravity:center", 94 SHORT_RTL_STRING, true, CENTER, TEXT_ALIGNMENT_INHERIT, 0f, 0f), 95 96 // left fade - LTR 97 new TestCase("Should fade left when text:long, dir:LTR, gravity:right", 98 LONG_LTR_STRING, true, RIGHT, TEXT_ALIGNMENT_INHERIT, 1f, 0f), 99 new TestCase("Should fade left when text:long, dir:LTR, textAlignment:textEnd", 100 LONG_LTR_STRING, true, NO_GRAVITY, TEXT_ALIGNMENT_TEXT_END, 1f, 0f), 101 new TestCase("Should fade left when text:long, dir:LTR, textAlignment:viewEnd", 102 LONG_LTR_STRING, true, NO_GRAVITY, TEXT_ALIGNMENT_VIEW_END, 1f, 0f), 103 104 // left fade - RTL 105 new TestCase("Should fade left when text:long, dir:RTL", 106 LONG_RTL_STRING, true, NO_GRAVITY, TEXT_ALIGNMENT_INHERIT, 1f, 0f), 107 new TestCase("Should fade left when text:long, dir:RTL, gravity:right", 108 LONG_RTL_STRING, true, RIGHT, TEXT_ALIGNMENT_INHERIT, 1f, 0f), 109 new TestCase("Should fade left when text:long, dir:RTL, textAlignment:textStart", 110 LONG_RTL_STRING, true, NO_GRAVITY, TEXT_ALIGNMENT_TEXT_START, 1f, 0f), 111 new TestCase("Should fade left when text:long, dir:RTL, textAlignment:viewEnd", 112 LONG_RTL_STRING, true, NO_GRAVITY, TEXT_ALIGNMENT_VIEW_END, 1f, 0f), 113 114 // right fade - LTR 115 new TestCase("Should fade right when text:long, dir:LTR", 116 LONG_LTR_STRING, true, NO_GRAVITY, TEXT_ALIGNMENT_INHERIT, 0f, 1f), 117 new TestCase("Should fade right when text:long, dir:LTR, textAlignment:textStart", 118 LONG_LTR_STRING, true, NO_GRAVITY, TEXT_ALIGNMENT_TEXT_START, 0f, 1f), 119 new TestCase("Should fade right when text:long, dir:LTR, gravity:left", 120 LONG_LTR_STRING, true, LEFT, TEXT_ALIGNMENT_INHERIT, 0f, 1f), 121 new TestCase("Should fade right when text:long, dir:LTR, textAlignment:viewStart", 122 LONG_LTR_STRING, true, NO_GRAVITY, TEXT_ALIGNMENT_VIEW_START, 0f, 1f), 123 124 // right fade - RTL 125 new TestCase("Should fade right when text:long, dir:RTL, gravity:left", 126 LONG_RTL_STRING, true, LEFT, TEXT_ALIGNMENT_INHERIT, 0f, 1f), 127 new TestCase("Should fade right when text:long, dir:RTL, textAlignment:viewStart", 128 LONG_RTL_STRING, true, NO_GRAVITY, TEXT_ALIGNMENT_VIEW_START, 0f, 1f), 129 new TestCase("Should fade right when text:long, dir:RTL, textAlignment:textEnd", 130 LONG_RTL_STRING, true, NO_GRAVITY, TEXT_ALIGNMENT_TEXT_END, 0f, 1f), 131 132 // left and right fade 133 new TestCase("Should fade both when text:long, dir:LTR, scroll:middle", 134 LONG_LTR_STRING, true, NO_GRAVITY, TEXT_ALIGNMENT_INHERIT, true, 1f, 1f), 135 new TestCase("Should fade both when text:long, dir:RTL, scroll:middle", 136 LONG_RTL_STRING, true, NO_GRAVITY, TEXT_ALIGNMENT_INHERIT, true, 1f, 1f) 137 }; 138 139 @Before 140 public void setup() { 141 mActivity = mActivityRule.getActivity(); 142 PollingCheck.waitFor(mActivity::hasWindowFocus); 143 } 144 145 @Test 146 public void testFadingEdge() throws Throwable { 147 for (TestCase data : TEST_DATA) { 148 MockTextView textView = createTextView(data.text, data.horizontalFadingEnabled, 149 data.gravity, data.textAlignment, data.scrollToMiddle); 150 151 assertEquals(data.errorMsg, 152 data.expectationLeft, textView.getLeftFadingEdgeStrength(), DELTA); 153 assertEquals(data.errorMsg, 154 data.expectationRight, textView.getRightFadingEdgeStrength(), DELTA); 155 } 156 } 157 158 private final MockTextView createTextView(String text, boolean horizontalFadingEnabled, 159 int gravity, int textAlignment, boolean scrollToMiddle) throws Throwable { 160 final MockTextView textView = new MockTextView(mActivity); 161 textView.setSingleLine(true); 162 textView.setTextSize(TypedValue.COMPLEX_UNIT_PX, TEXT_SIZE); 163 textView.setPadding(ANY_PADDING, ANY_PADDING, ANY_PADDING, ANY_PADDING); 164 textView.setFadingEdgeLength(ANY_FADE_LENGTH); 165 textView.setLayoutParams(new ViewGroup.LayoutParams(WIDTH, 166 ViewGroup.LayoutParams.WRAP_CONTENT)); 167 textView.setHorizontalFadingEdgeEnabled(horizontalFadingEnabled); 168 textView.setText(text); 169 textView.setGravity(gravity); 170 textView.setTextAlignment(textAlignment); 171 172 final FrameLayout layout = new FrameLayout(mActivity); 173 ViewGroup.LayoutParams layoutParams = new ViewGroup.LayoutParams( 174 ViewGroup.LayoutParams.MATCH_PARENT, 175 ViewGroup.LayoutParams.MATCH_PARENT); 176 layout.setLayoutParams(layoutParams); 177 layout.addView(textView); 178 179 final Instrumentation instrumentation = InstrumentationRegistry.getInstrumentation(); 180 mActivityRule.runOnUiThread(() -> mActivity.setContentView(layout)); 181 if (scrollToMiddle) { 182 mActivityRule.runOnUiThread(() -> { 183 float lineMid = (textView.getLayout().getLineLeft(0) + 184 textView.getLayout().getLineRight(0)) / 2; 185 int scrollPosition = (int) lineMid; 186 textView.setScrollX(scrollPosition); 187 }); 188 } 189 instrumentation.waitForIdleSync(); 190 return textView; 191 } 192 193 private static class TestCase { 194 final String errorMsg; 195 final String text; 196 final boolean horizontalFadingEnabled; 197 final int gravity; 198 final int textAlignment; 199 final float expectationLeft; 200 final float expectationRight; 201 final boolean scrollToMiddle; 202 203 TestCase(String errorMsg, String text, boolean horizontalFadingEnabled, int gravity, 204 int textAlignment, boolean scrollToMiddle, float expectationLeft, 205 float expectationRight) { 206 this.errorMsg = errorMsg; 207 this.text = text; 208 this.horizontalFadingEnabled = horizontalFadingEnabled; 209 this.gravity = gravity; 210 this.textAlignment = textAlignment; 211 this.expectationLeft = expectationLeft; 212 this.expectationRight = expectationRight; 213 this.scrollToMiddle = scrollToMiddle; 214 } 215 216 TestCase(String errorMsg, String text, boolean horizontalFadingEnabled, int gravity, 217 int textAlignment, float expectationLeft, float expectationRight) { 218 this(errorMsg, text, horizontalFadingEnabled, gravity, textAlignment, false, 219 expectationLeft, expectationRight); 220 } 221 } 222 } 223
