Doug Felt | 6ad5a7a | 2010-02-19 15:44:35 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2010 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| 5 | * use this file except in compliance with the License. You may obtain a copy of |
| 6 | * 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, WITHOUT |
| 12 | * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| 13 | * License for the specific language governing permissions and limitations under |
| 14 | * the License. |
| 15 | */ |
| 16 | |
| 17 | package android.text; |
| 18 | |
Andrei Stingaceanu | e1a7d0d | 2017-04-24 16:53:17 +0100 | [diff] [blame] | 19 | import static android.text.Layout.Alignment.ALIGN_NORMAL; |
Roozbeh Pournader | 02f167c | 2017-06-06 11:31:33 -0700 | [diff] [blame] | 20 | |
Andrei Stingaceanu | e1a7d0d | 2017-04-24 16:53:17 +0100 | [diff] [blame] | 21 | import static org.junit.Assert.assertEquals; |
Roozbeh Pournader | 02f167c | 2017-06-06 11:31:33 -0700 | [diff] [blame] | 22 | import static org.junit.Assert.assertTrue; |
Andrei Stingaceanu | e1a7d0d | 2017-04-24 16:53:17 +0100 | [diff] [blame] | 23 | |
Doug Felt | 6ad5a7a | 2010-02-19 15:44:35 -0800 | [diff] [blame] | 24 | import android.graphics.Paint.FontMetricsInt; |
Roozbeh Pournader | ef7cfa1 | 2017-06-15 12:39:04 -0700 | [diff] [blame] | 25 | import android.os.LocaleList; |
Siyamed Sinir | 68089c8 | 2016-06-29 16:55:35 -0700 | [diff] [blame] | 26 | import android.support.test.filters.SmallTest; |
Andrei Stingaceanu | e1a7d0d | 2017-04-24 16:53:17 +0100 | [diff] [blame] | 27 | import android.support.test.runner.AndroidJUnit4; |
Doug Felt | 6ad5a7a | 2010-02-19 15:44:35 -0800 | [diff] [blame] | 28 | import android.text.Layout.Alignment; |
Seigo Nonaka | f4afb09 | 2016-03-15 15:50:06 +0900 | [diff] [blame] | 29 | import android.text.method.EditorState; |
Roozbeh Pournader | ef7cfa1 | 2017-06-15 12:39:04 -0700 | [diff] [blame] | 30 | import android.text.style.LocaleSpan; |
Doug Felt | 6ad5a7a | 2010-02-19 15:44:35 -0800 | [diff] [blame] | 31 | import android.util.Log; |
| 32 | |
Roozbeh Pournader | 02f167c | 2017-06-06 11:31:33 -0700 | [diff] [blame] | 33 | import org.junit.Before; |
Andrei Stingaceanu | e1a7d0d | 2017-04-24 16:53:17 +0100 | [diff] [blame] | 34 | import org.junit.Test; |
| 35 | import org.junit.runner.RunWith; |
Siyamed Sinir | 68089c8 | 2016-06-29 16:55:35 -0700 | [diff] [blame] | 36 | |
Roozbeh Pournader | 02f167c | 2017-06-06 11:31:33 -0700 | [diff] [blame] | 37 | import java.text.Normalizer; |
| 38 | import java.util.ArrayList; |
| 39 | import java.util.List; |
Roozbeh Pournader | ef7cfa1 | 2017-06-15 12:39:04 -0700 | [diff] [blame] | 40 | import java.util.Locale; |
Roozbeh Pournader | 02f167c | 2017-06-06 11:31:33 -0700 | [diff] [blame] | 41 | |
Doug Felt | 6ad5a7a | 2010-02-19 15:44:35 -0800 | [diff] [blame] | 42 | /** |
| 43 | * Tests StaticLayout vertical metrics behavior. |
| 44 | */ |
Andrei Stingaceanu | e1a7d0d | 2017-04-24 16:53:17 +0100 | [diff] [blame] | 45 | @SmallTest |
| 46 | @RunWith(AndroidJUnit4.class) |
| 47 | public class StaticLayoutTest { |
Roozbeh Pournader | 02f167c | 2017-06-06 11:31:33 -0700 | [diff] [blame] | 48 | private static final float SPACE_MULTI = 1.0f; |
| 49 | private static final float SPACE_ADD = 0.0f; |
| 50 | private static final int DEFAULT_OUTER_WIDTH = 150; |
| 51 | |
| 52 | private static final CharSequence LAYOUT_TEXT = "CharSe\tq\nChar" |
| 53 | + "Sequence\nCharSequence\nHelllo\n, world\nLongLongLong"; |
| 54 | private static final CharSequence LAYOUT_TEXT_SINGLE_LINE = "CharSequence"; |
| 55 | |
| 56 | private static final Alignment DEFAULT_ALIGN = Alignment.ALIGN_CENTER; |
| 57 | private static final int ELLIPSIZE_WIDTH = 8; |
| 58 | |
| 59 | private StaticLayout mDefaultLayout; |
| 60 | private TextPaint mDefaultPaint; |
| 61 | |
| 62 | @Before |
| 63 | public void setup() { |
| 64 | mDefaultPaint = new TextPaint(); |
| 65 | mDefaultLayout = createDefaultStaticLayout(); |
| 66 | } |
| 67 | |
| 68 | private StaticLayout createDefaultStaticLayout() { |
| 69 | return new StaticLayout(LAYOUT_TEXT, mDefaultPaint, |
| 70 | DEFAULT_OUTER_WIDTH, DEFAULT_ALIGN, SPACE_MULTI, SPACE_ADD, true); |
| 71 | } |
| 72 | |
| 73 | @Test |
| 74 | public void testBuilder() { |
| 75 | { |
| 76 | // Obtain. |
| 77 | final StaticLayout.Builder builder = StaticLayout.Builder.obtain(LAYOUT_TEXT, 0, |
| 78 | LAYOUT_TEXT.length(), mDefaultPaint, DEFAULT_OUTER_WIDTH); |
| 79 | final StaticLayout layout = builder.build(); |
| 80 | // Check default value. |
| 81 | assertEquals(TextDirectionHeuristics.FIRSTSTRONG_LTR, |
| 82 | layout.getTextDirectionHeuristic()); |
| 83 | } |
| 84 | { |
| 85 | // setTextDirection. |
| 86 | final StaticLayout.Builder builder = StaticLayout.Builder.obtain(LAYOUT_TEXT, 0, |
| 87 | LAYOUT_TEXT.length(), mDefaultPaint, DEFAULT_OUTER_WIDTH); |
| 88 | builder.setTextDirection(TextDirectionHeuristics.RTL); |
| 89 | final StaticLayout layout = builder.build(); |
| 90 | // Always returns TextDirectionHeuristics.FIRSTSTRONG_LTR. |
| 91 | assertEquals(TextDirectionHeuristics.FIRSTSTRONG_LTR, |
| 92 | layout.getTextDirectionHeuristic()); |
| 93 | } |
| 94 | } |
| 95 | |
Doug Felt | 6ad5a7a | 2010-02-19 15:44:35 -0800 | [diff] [blame] | 96 | /** |
| 97 | * Basic test showing expected behavior and relationship between font |
| 98 | * metrics and line metrics. |
| 99 | */ |
Andrei Stingaceanu | e1a7d0d | 2017-04-24 16:53:17 +0100 | [diff] [blame] | 100 | @Test |
Doug Felt | 6ad5a7a | 2010-02-19 15:44:35 -0800 | [diff] [blame] | 101 | public void testGetters1() { |
| 102 | LayoutBuilder b = builder(); |
| 103 | FontMetricsInt fmi = b.paint.getFontMetricsInt(); |
| 104 | |
| 105 | // check default paint |
| 106 | Log.i("TG1:paint", fmi.toString()); |
| 107 | |
| 108 | Layout l = b.build(); |
| 109 | assertVertMetrics(l, 0, 0, |
| 110 | fmi.ascent, fmi.descent); |
| 111 | |
| 112 | // other quick metrics |
| 113 | assertEquals(0, l.getLineStart(0)); |
| 114 | assertEquals(Layout.DIR_LEFT_TO_RIGHT, l.getParagraphDirection(0)); |
| 115 | assertEquals(false, l.getLineContainsTab(0)); |
| 116 | assertEquals(Layout.DIRS_ALL_LEFT_TO_RIGHT, l.getLineDirections(0)); |
| 117 | assertEquals(0, l.getEllipsisCount(0)); |
| 118 | assertEquals(0, l.getEllipsisStart(0)); |
| 119 | assertEquals(b.width, l.getEllipsizedWidth()); |
| 120 | } |
| 121 | |
| 122 | /** |
| 123 | * Basic test showing effect of includePad = true with 1 line. |
| 124 | * Top and bottom padding are affected, as is the line descent and height. |
| 125 | */ |
Andrei Stingaceanu | e1a7d0d | 2017-04-24 16:53:17 +0100 | [diff] [blame] | 126 | @Test |
Doug Felt | 6ad5a7a | 2010-02-19 15:44:35 -0800 | [diff] [blame] | 127 | public void testGetters2() { |
| 128 | LayoutBuilder b = builder() |
| 129 | .setIncludePad(true); |
| 130 | FontMetricsInt fmi = b.paint.getFontMetricsInt(); |
| 131 | |
| 132 | Layout l = b.build(); |
| 133 | assertVertMetrics(l, fmi.top - fmi.ascent, fmi.bottom - fmi.descent, |
| 134 | fmi.top, fmi.bottom); |
| 135 | } |
| 136 | |
| 137 | /** |
| 138 | * Basic test showing effect of includePad = true wrapping to 2 lines. |
| 139 | * Ascent of top line and descent of bottom line are affected. |
| 140 | */ |
Andrei Stingaceanu | e1a7d0d | 2017-04-24 16:53:17 +0100 | [diff] [blame] | 141 | @Test |
Doug Felt | 6ad5a7a | 2010-02-19 15:44:35 -0800 | [diff] [blame] | 142 | public void testGetters3() { |
| 143 | LayoutBuilder b = builder() |
| 144 | .setIncludePad(true) |
| 145 | .setWidth(50); |
| 146 | FontMetricsInt fmi = b.paint.getFontMetricsInt(); |
| 147 | |
| 148 | Layout l = b.build(); |
| 149 | assertVertMetrics(l, fmi.top - fmi.ascent, fmi.bottom - fmi.descent, |
| 150 | fmi.top, fmi.descent, |
| 151 | fmi.ascent, fmi.bottom); |
| 152 | } |
| 153 | |
| 154 | /** |
| 155 | * Basic test showing effect of includePad = true wrapping to 3 lines. |
| 156 | * First line ascent is top, bottom line descent is bottom. |
| 157 | */ |
Andrei Stingaceanu | e1a7d0d | 2017-04-24 16:53:17 +0100 | [diff] [blame] | 158 | @Test |
Doug Felt | 6ad5a7a | 2010-02-19 15:44:35 -0800 | [diff] [blame] | 159 | public void testGetters4() { |
| 160 | LayoutBuilder b = builder() |
| 161 | .setText("This is a longer test") |
| 162 | .setIncludePad(true) |
| 163 | .setWidth(50); |
| 164 | FontMetricsInt fmi = b.paint.getFontMetricsInt(); |
| 165 | |
| 166 | Layout l = b.build(); |
| 167 | assertVertMetrics(l, fmi.top - fmi.ascent, fmi.bottom - fmi.descent, |
| 168 | fmi.top, fmi.descent, |
| 169 | fmi.ascent, fmi.descent, |
| 170 | fmi.ascent, fmi.bottom); |
| 171 | } |
| 172 | |
| 173 | /** |
| 174 | * Basic test showing effect of includePad = true wrapping to 3 lines and |
| 175 | * large text. See effect of leading. Currently, we don't expect there to |
| 176 | * even be non-zero leading. |
| 177 | */ |
Andrei Stingaceanu | e1a7d0d | 2017-04-24 16:53:17 +0100 | [diff] [blame] | 178 | @Test |
Doug Felt | 6ad5a7a | 2010-02-19 15:44:35 -0800 | [diff] [blame] | 179 | public void testGetters5() { |
| 180 | LayoutBuilder b = builder() |
| 181 | .setText("This is a longer test") |
| 182 | .setIncludePad(true) |
| 183 | .setWidth(150); |
| 184 | b.paint.setTextSize(36); |
| 185 | FontMetricsInt fmi = b.paint.getFontMetricsInt(); |
| 186 | |
| 187 | if (fmi.leading == 0) { // nothing to test |
| 188 | Log.i("TG5", "leading is 0, skipping test"); |
| 189 | return; |
| 190 | } |
| 191 | |
| 192 | // So far, leading is not used, so this is the same as TG4. If we start |
| 193 | // using leading, this will fail. |
| 194 | Layout l = b.build(); |
| 195 | assertVertMetrics(l, fmi.top - fmi.ascent, fmi.bottom - fmi.descent, |
| 196 | fmi.top, fmi.descent, |
| 197 | fmi.ascent, fmi.descent, |
| 198 | fmi.ascent, fmi.bottom); |
| 199 | } |
| 200 | |
| 201 | /** |
| 202 | * Basic test showing effect of includePad = true, spacingAdd = 2, wrapping |
| 203 | * to 3 lines. |
| 204 | */ |
Andrei Stingaceanu | e1a7d0d | 2017-04-24 16:53:17 +0100 | [diff] [blame] | 205 | @Test |
Doug Felt | 6ad5a7a | 2010-02-19 15:44:35 -0800 | [diff] [blame] | 206 | public void testGetters6() { |
| 207 | int spacingAdd = 2; // int so expressions return int |
| 208 | LayoutBuilder b = builder() |
| 209 | .setText("This is a longer test") |
| 210 | .setIncludePad(true) |
| 211 | .setWidth(50) |
| 212 | .setSpacingAdd(spacingAdd); |
| 213 | FontMetricsInt fmi = b.paint.getFontMetricsInt(); |
| 214 | |
| 215 | Layout l = b.build(); |
| 216 | assertVertMetrics(l, fmi.top - fmi.ascent, fmi.bottom - fmi.descent, |
| 217 | fmi.top, fmi.descent + spacingAdd, |
| 218 | fmi.ascent, fmi.descent + spacingAdd, |
Siyamed Sinir | ed09ae1 | 2016-02-16 14:36:26 -0800 | [diff] [blame] | 219 | fmi.ascent, fmi.bottom); |
Doug Felt | 6ad5a7a | 2010-02-19 15:44:35 -0800 | [diff] [blame] | 220 | } |
| 221 | |
| 222 | /** |
| 223 | * Basic test showing effect of includePad = true, spacingAdd = 2, |
| 224 | * spacingMult = 1.5, wrapping to 3 lines. |
| 225 | */ |
Andrei Stingaceanu | e1a7d0d | 2017-04-24 16:53:17 +0100 | [diff] [blame] | 226 | @Test |
Doug Felt | 6ad5a7a | 2010-02-19 15:44:35 -0800 | [diff] [blame] | 227 | public void testGetters7() { |
| 228 | LayoutBuilder b = builder() |
| 229 | .setText("This is a longer test") |
| 230 | .setIncludePad(true) |
| 231 | .setWidth(50) |
| 232 | .setSpacingAdd(2) |
| 233 | .setSpacingMult(1.5f); |
| 234 | FontMetricsInt fmi = b.paint.getFontMetricsInt(); |
| 235 | Scaler s = new Scaler(b.spacingMult, b.spacingAdd); |
| 236 | |
| 237 | Layout l = b.build(); |
| 238 | assertVertMetrics(l, fmi.top - fmi.ascent, fmi.bottom - fmi.descent, |
| 239 | fmi.top, fmi.descent + s.scale(fmi.descent - fmi.top), |
| 240 | fmi.ascent, fmi.descent + s.scale(fmi.descent - fmi.ascent), |
Siyamed Sinir | ed09ae1 | 2016-02-16 14:36:26 -0800 | [diff] [blame] | 241 | fmi.ascent, fmi.bottom); |
Doug Felt | 6ad5a7a | 2010-02-19 15:44:35 -0800 | [diff] [blame] | 242 | } |
| 243 | |
| 244 | /** |
| 245 | * Basic test showing effect of includePad = true, spacingAdd = 0, |
| 246 | * spacingMult = 0.8 when wrapping to 3 lines. |
| 247 | */ |
Andrei Stingaceanu | e1a7d0d | 2017-04-24 16:53:17 +0100 | [diff] [blame] | 248 | @Test |
Doug Felt | 6ad5a7a | 2010-02-19 15:44:35 -0800 | [diff] [blame] | 249 | public void testGetters8() { |
| 250 | LayoutBuilder b = builder() |
| 251 | .setText("This is a longer test") |
| 252 | .setIncludePad(true) |
| 253 | .setWidth(50) |
| 254 | .setSpacingAdd(2) |
| 255 | .setSpacingMult(.8f); |
| 256 | FontMetricsInt fmi = b.paint.getFontMetricsInt(); |
| 257 | Scaler s = new Scaler(b.spacingMult, b.spacingAdd); |
| 258 | |
| 259 | Layout l = b.build(); |
| 260 | assertVertMetrics(l, fmi.top - fmi.ascent, fmi.bottom - fmi.descent, |
| 261 | fmi.top, fmi.descent + s.scale(fmi.descent - fmi.top), |
| 262 | fmi.ascent, fmi.descent + s.scale(fmi.descent - fmi.ascent), |
Siyamed Sinir | ed09ae1 | 2016-02-16 14:36:26 -0800 | [diff] [blame] | 263 | fmi.ascent, fmi.bottom); |
Doug Felt | 6ad5a7a | 2010-02-19 15:44:35 -0800 | [diff] [blame] | 264 | } |
| 265 | |
| 266 | // ----- test utility classes and methods ----- |
| 267 | |
| 268 | // Models the effect of the scale and add parameters. I think the current |
| 269 | // implementation misbehaves. |
| 270 | private static class Scaler { |
| 271 | private final float sMult; |
| 272 | private final float sAdd; |
| 273 | |
| 274 | Scaler(float sMult, float sAdd) { |
| 275 | this.sMult = sMult - 1; |
| 276 | this.sAdd = sAdd; |
| 277 | } |
| 278 | |
| 279 | public int scale(float height) { |
Doug Felt | 1065758 | 2010-02-22 11:19:01 -0800 | [diff] [blame] | 280 | int altVal = (int)(height * sMult + sAdd + 0.5); |
Doug Felt | 6ad5a7a | 2010-02-19 15:44:35 -0800 | [diff] [blame] | 281 | int rndVal = Math.round(height * sMult + sAdd); |
| 282 | if (altVal != rndVal) { |
| 283 | Log.i("Scale", "expected scale: " + rndVal + |
| 284 | " != returned scale: " + altVal); |
| 285 | } |
Doug Felt | 1065758 | 2010-02-22 11:19:01 -0800 | [diff] [blame] | 286 | return rndVal; |
Doug Felt | 6ad5a7a | 2010-02-19 15:44:35 -0800 | [diff] [blame] | 287 | } |
| 288 | } |
| 289 | |
Doug Felt | 9f7a444 | 2010-03-01 12:45:56 -0800 | [diff] [blame] | 290 | /* package */ static LayoutBuilder builder() { |
Doug Felt | 6ad5a7a | 2010-02-19 15:44:35 -0800 | [diff] [blame] | 291 | return new LayoutBuilder(); |
| 292 | } |
| 293 | |
Doug Felt | 9f7a444 | 2010-03-01 12:45:56 -0800 | [diff] [blame] | 294 | /* package */ static class LayoutBuilder { |
Doug Felt | 6ad5a7a | 2010-02-19 15:44:35 -0800 | [diff] [blame] | 295 | String text = "This is a test"; |
| 296 | TextPaint paint = new TextPaint(); // default |
| 297 | int width = 100; |
| 298 | Alignment align = ALIGN_NORMAL; |
| 299 | float spacingMult = 1; |
| 300 | float spacingAdd = 0; |
| 301 | boolean includePad = false; |
| 302 | |
| 303 | LayoutBuilder setText(String text) { |
| 304 | this.text = text; |
| 305 | return this; |
| 306 | } |
| 307 | |
| 308 | LayoutBuilder setPaint(TextPaint paint) { |
| 309 | this.paint = paint; |
| 310 | return this; |
| 311 | } |
| 312 | |
| 313 | LayoutBuilder setWidth(int width) { |
| 314 | this.width = width; |
| 315 | return this; |
| 316 | } |
| 317 | |
| 318 | LayoutBuilder setAlignment(Alignment align) { |
| 319 | this.align = align; |
| 320 | return this; |
| 321 | } |
| 322 | |
| 323 | LayoutBuilder setSpacingMult(float spacingMult) { |
| 324 | this.spacingMult = spacingMult; |
| 325 | return this; |
| 326 | } |
| 327 | |
| 328 | LayoutBuilder setSpacingAdd(float spacingAdd) { |
| 329 | this.spacingAdd = spacingAdd; |
| 330 | return this; |
| 331 | } |
| 332 | |
| 333 | LayoutBuilder setIncludePad(boolean includePad) { |
| 334 | this.includePad = includePad; |
| 335 | return this; |
| 336 | } |
| 337 | |
| 338 | Layout build() { |
| 339 | return new StaticLayout(text, paint, width, align, spacingMult, |
| 340 | spacingAdd, includePad); |
| 341 | } |
| 342 | } |
| 343 | |
| 344 | private void assertVertMetrics(Layout l, int topPad, int botPad, int... values) { |
| 345 | assertTopBotPadding(l, topPad, botPad); |
| 346 | assertLinesMetrics(l, values); |
| 347 | } |
| 348 | |
| 349 | private void assertLinesMetrics(Layout l, int... values) { |
| 350 | // sanity check |
| 351 | if ((values.length & 0x1) != 0) { |
| 352 | throw new IllegalArgumentException(String.valueOf(values.length)); |
| 353 | } |
| 354 | |
| 355 | int lines = values.length >> 1; |
| 356 | assertEquals(lines, l.getLineCount()); |
| 357 | |
| 358 | int t = 0; |
| 359 | for (int i = 0, n = 0; i < lines; ++i, n += 2) { |
| 360 | int a = values[n]; |
| 361 | int d = values[n+1]; |
| 362 | int h = -a + d; |
| 363 | assertLineMetrics(l, i, t, a, d, h); |
| 364 | t += h; |
| 365 | } |
| 366 | |
| 367 | assertEquals(t, l.getHeight()); |
| 368 | } |
| 369 | |
| 370 | private void assertLineMetrics(Layout l, int line, |
| 371 | int top, int ascent, int descent, int height) { |
| 372 | String info = "line " + line; |
| 373 | assertEquals(info, top, l.getLineTop(line)); |
| 374 | assertEquals(info, ascent, l.getLineAscent(line)); |
| 375 | assertEquals(info, descent, l.getLineDescent(line)); |
| 376 | assertEquals(info, height, l.getLineBottom(line) - top); |
| 377 | } |
| 378 | |
| 379 | private void assertTopBotPadding(Layout l, int topPad, int botPad) { |
| 380 | assertEquals(topPad, l.getTopPadding()); |
| 381 | assertEquals(botPad, l.getBottomPadding()); |
| 382 | } |
Seigo Nonaka | f4afb09 | 2016-03-15 15:50:06 +0900 | [diff] [blame] | 383 | |
| 384 | private void moveCursorToRightCursorableOffset(EditorState state, TextPaint paint) { |
| 385 | assertEquals("The editor has selection", state.mSelectionStart, state.mSelectionEnd); |
| 386 | final Layout layout = builder().setText(state.mText.toString()).setPaint(paint).build(); |
| 387 | final int newOffset = layout.getOffsetToRightOf(state.mSelectionStart); |
| 388 | state.mSelectionStart = state.mSelectionEnd = newOffset; |
| 389 | } |
| 390 | |
| 391 | private void moveCursorToLeftCursorableOffset(EditorState state, TextPaint paint) { |
| 392 | assertEquals("The editor has selection", state.mSelectionStart, state.mSelectionEnd); |
| 393 | final Layout layout = builder().setText(state.mText.toString()).setPaint(paint).build(); |
| 394 | final int newOffset = layout.getOffsetToLeftOf(state.mSelectionStart); |
| 395 | state.mSelectionStart = state.mSelectionEnd = newOffset; |
| 396 | } |
| 397 | |
| 398 | /** |
| 399 | * Tests for keycap, variation selectors, flags are in CTS. |
| 400 | * See {@link android.text.cts.StaticLayoutTest}. |
| 401 | */ |
Andrei Stingaceanu | e1a7d0d | 2017-04-24 16:53:17 +0100 | [diff] [blame] | 402 | @Test |
Seigo Nonaka | f4afb09 | 2016-03-15 15:50:06 +0900 | [diff] [blame] | 403 | public void testEmojiOffset() { |
| 404 | EditorState state = new EditorState(); |
| 405 | TextPaint paint = new TextPaint(); |
| 406 | |
| 407 | // Odd numbered regional indicator symbols. |
| 408 | // U+1F1E6 is REGIONAL INDICATOR SYMBOL LETTER A, U+1F1E8 is REGIONAL INDICATOR SYMBOL |
| 409 | // LETTER C. |
| 410 | state.setByString("| U+1F1E6 U+1F1E8 U+1F1E6 U+1F1E8 U+1F1E6"); |
| 411 | moveCursorToRightCursorableOffset(state, paint); |
| 412 | state.setByString("U+1F1E6 U+1F1E8 | U+1F1E6 U+1F1E8 U+1F1E6"); |
| 413 | moveCursorToRightCursorableOffset(state, paint); |
| 414 | state.setByString("U+1F1E6 U+1F1E8 U+1F1E6 U+1F1E8 | U+1F1E6"); |
| 415 | moveCursorToRightCursorableOffset(state, paint); |
| 416 | state.setByString("U+1F1E6 U+1F1E8 U+1F1E6 U+1F1E8 U+1F1E6 |"); |
| 417 | moveCursorToRightCursorableOffset(state, paint); |
| 418 | state.setByString("U+1F1E6 U+1F1E8 U+1F1E6 U+1F1E8 U+1F1E6 |"); |
| 419 | moveCursorToLeftCursorableOffset(state, paint); |
| 420 | state.setByString("U+1F1E6 U+1F1E8 U+1F1E6 U+1F1E8 | U+1F1E6"); |
| 421 | moveCursorToLeftCursorableOffset(state, paint); |
| 422 | state.setByString("U+1F1E6 U+1F1E8 | U+1F1E6 U+1F1E8 U+1F1E6"); |
| 423 | moveCursorToLeftCursorableOffset(state, paint); |
| 424 | state.setByString("| U+1F1E6 U+1F1E8 U+1F1E6 U+1F1E8 U+1F1E6"); |
| 425 | moveCursorToLeftCursorableOffset(state, paint); |
| 426 | state.setByString("| U+1F1E6 U+1F1E8 U+1F1E6 U+1F1E8 U+1F1E6"); |
| 427 | moveCursorToLeftCursorableOffset(state, paint); |
| 428 | |
| 429 | // Zero width sequence |
| 430 | final String zwjSequence = "U+1F468 U+200D U+2764 U+FE0F U+200D U+1F468"; |
| 431 | state.setByString("| " + zwjSequence + " " + zwjSequence + " " + zwjSequence); |
| 432 | moveCursorToRightCursorableOffset(state, paint); |
| 433 | state.assertEquals(zwjSequence + " | " + zwjSequence + " " + zwjSequence); |
| 434 | moveCursorToRightCursorableOffset(state, paint); |
| 435 | state.assertEquals(zwjSequence + " " + zwjSequence + " | " + zwjSequence); |
| 436 | moveCursorToRightCursorableOffset(state, paint); |
| 437 | state.assertEquals(zwjSequence + " " + zwjSequence + " " + zwjSequence + " |"); |
| 438 | moveCursorToRightCursorableOffset(state, paint); |
| 439 | state.assertEquals(zwjSequence + " " + zwjSequence + " " + zwjSequence + " |"); |
| 440 | moveCursorToLeftCursorableOffset(state, paint); |
| 441 | state.assertEquals(zwjSequence + " " + zwjSequence + " | " + zwjSequence); |
| 442 | moveCursorToLeftCursorableOffset(state, paint); |
| 443 | state.assertEquals(zwjSequence + " | " + zwjSequence + " " + zwjSequence); |
| 444 | moveCursorToLeftCursorableOffset(state, paint); |
| 445 | state.assertEquals("| " + zwjSequence + " " + zwjSequence + " " + zwjSequence); |
| 446 | moveCursorToLeftCursorableOffset(state, paint); |
| 447 | state.assertEquals("| " + zwjSequence + " " + zwjSequence + " " + zwjSequence); |
| 448 | moveCursorToLeftCursorableOffset(state, paint); |
| 449 | |
| 450 | // Emoji modifiers |
| 451 | // U+261D is WHITE UP POINTING INDEX, U+1F3FB is EMOJI MODIFIER FITZPATRICK TYPE-1-2. |
| 452 | state.setByString("| U+261D U+1F3FB U+261D U+1F3FB U+261D U+1F3FB"); |
| 453 | moveCursorToRightCursorableOffset(state, paint); |
| 454 | state.setByString("U+261D U+1F3FB | U+261D U+1F3FB U+261D U+1F3FB"); |
| 455 | moveCursorToRightCursorableOffset(state, paint); |
| 456 | state.setByString("U+261D U+1F3FB U+261D U+1F3FB | U+261D U+1F3FB"); |
| 457 | moveCursorToRightCursorableOffset(state, paint); |
| 458 | state.setByString("U+261D U+1F3FB U+261D U+1F3FB U+261D U+1F3FB |"); |
| 459 | moveCursorToRightCursorableOffset(state, paint); |
| 460 | state.setByString("U+261D U+1F3FB U+261D U+1F3FB U+261D U+1F3FB |"); |
| 461 | moveCursorToLeftCursorableOffset(state, paint); |
| 462 | state.setByString("U+261D U+1F3FB U+261D U+1F3FB | U+261D U+1F3FB"); |
| 463 | moveCursorToLeftCursorableOffset(state, paint); |
| 464 | state.setByString("U+261D U+1F3FB | U+261D U+1F3FB U+261D U+1F3FB"); |
| 465 | moveCursorToLeftCursorableOffset(state, paint); |
| 466 | state.setByString("| U+261D U+1F3FB U+261D U+1F3FB U+261D U+1F3FB"); |
| 467 | moveCursorToLeftCursorableOffset(state, paint); |
| 468 | state.setByString("| U+261D U+1F3FB U+261D U+1F3FB U+261D U+1F3FB"); |
| 469 | moveCursorToLeftCursorableOffset(state, paint); |
| 470 | } |
Roozbeh Pournader | 02f167c | 2017-06-06 11:31:33 -0700 | [diff] [blame] | 471 | |
| 472 | private StaticLayout createEllipsizeStaticLayout(CharSequence text, |
| 473 | TextUtils.TruncateAt ellipsize, int maxLines) { |
| 474 | return new StaticLayout(text, 0, text.length(), |
| 475 | mDefaultPaint, DEFAULT_OUTER_WIDTH, DEFAULT_ALIGN, |
| 476 | TextDirectionHeuristics.FIRSTSTRONG_LTR, |
| 477 | SPACE_MULTI, SPACE_ADD, true /* include pad */, |
| 478 | ellipsize, |
| 479 | ELLIPSIZE_WIDTH, |
| 480 | maxLines); |
| 481 | } |
| 482 | |
| 483 | @Test |
| 484 | public void testEllipsis_singleLine() { |
| 485 | { |
| 486 | // Single line case and TruncateAt.END so that we have some ellipsis |
| 487 | StaticLayout layout = createEllipsizeStaticLayout(LAYOUT_TEXT_SINGLE_LINE, |
| 488 | TextUtils.TruncateAt.END, 1); |
| 489 | assertTrue(layout.getEllipsisCount(0) > 0); |
| 490 | } |
| 491 | { |
| 492 | // Single line case and TruncateAt.MIDDLE so that we have some ellipsis |
| 493 | StaticLayout layout = createEllipsizeStaticLayout(LAYOUT_TEXT_SINGLE_LINE, |
| 494 | TextUtils.TruncateAt.MIDDLE, 1); |
| 495 | assertTrue(layout.getEllipsisCount(0) > 0); |
| 496 | } |
| 497 | { |
| 498 | // Single line case and TruncateAt.END so that we have some ellipsis |
| 499 | StaticLayout layout = createEllipsizeStaticLayout(LAYOUT_TEXT_SINGLE_LINE, |
| 500 | TextUtils.TruncateAt.END, 1); |
| 501 | assertTrue(layout.getEllipsisCount(0) > 0); |
| 502 | } |
| 503 | { |
| 504 | // Single line case and TruncateAt.MARQUEE so that we have NO ellipsis |
| 505 | StaticLayout layout = createEllipsizeStaticLayout(LAYOUT_TEXT_SINGLE_LINE, |
| 506 | TextUtils.TruncateAt.MARQUEE, 1); |
| 507 | assertTrue(layout.getEllipsisCount(0) == 0); |
| 508 | } |
| 509 | { |
| 510 | final String text = "\u3042" // HIRAGANA LETTER A |
| 511 | + "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"; |
| 512 | final float textWidth = mDefaultPaint.measureText(text); |
| 513 | final int halfWidth = (int) (textWidth / 2.0f); |
| 514 | { |
| 515 | StaticLayout layout = new StaticLayout(text, 0, text.length(), mDefaultPaint, |
| 516 | halfWidth, DEFAULT_ALIGN, TextDirectionHeuristics.FIRSTSTRONG_LTR, |
| 517 | SPACE_MULTI, SPACE_ADD, false, TextUtils.TruncateAt.END, halfWidth, 1); |
| 518 | assertTrue(layout.getEllipsisCount(0) > 0); |
| 519 | assertTrue(layout.getEllipsisStart(0) > 0); |
| 520 | } |
| 521 | { |
| 522 | StaticLayout layout = new StaticLayout(text, 0, text.length(), mDefaultPaint, |
| 523 | halfWidth, DEFAULT_ALIGN, TextDirectionHeuristics.FIRSTSTRONG_LTR, |
| 524 | SPACE_MULTI, SPACE_ADD, false, TextUtils.TruncateAt.START, halfWidth, 1); |
| 525 | assertTrue(layout.getEllipsisCount(0) > 0); |
| 526 | assertEquals(0, mDefaultLayout.getEllipsisStart(0)); |
| 527 | } |
| 528 | { |
| 529 | StaticLayout layout = new StaticLayout(text, 0, text.length(), mDefaultPaint, |
| 530 | halfWidth, DEFAULT_ALIGN, TextDirectionHeuristics.FIRSTSTRONG_LTR, |
| 531 | SPACE_MULTI, SPACE_ADD, false, TextUtils.TruncateAt.MIDDLE, halfWidth, 1); |
| 532 | assertTrue(layout.getEllipsisCount(0) > 0); |
| 533 | assertTrue(layout.getEllipsisStart(0) > 0); |
| 534 | } |
| 535 | { |
| 536 | StaticLayout layout = new StaticLayout(text, 0, text.length(), mDefaultPaint, |
| 537 | halfWidth, DEFAULT_ALIGN, TextDirectionHeuristics.FIRSTSTRONG_LTR, |
| 538 | SPACE_MULTI, SPACE_ADD, false, TextUtils.TruncateAt.MARQUEE, halfWidth, 1); |
| 539 | assertEquals(0, layout.getEllipsisCount(0)); |
| 540 | } |
| 541 | } |
| 542 | |
| 543 | { |
| 544 | // The white spaces in this text will be trailing if maxLines is larger than 1, but |
| 545 | // width of the trailing white spaces must not be ignored if ellipsis is applied. |
| 546 | final String text = "abc def"; |
| 547 | final float textWidth = mDefaultPaint.measureText(text); |
| 548 | final int halfWidth = (int) (textWidth / 2.0f); |
| 549 | { |
| 550 | StaticLayout layout = new StaticLayout(text, 0, text.length(), mDefaultPaint, |
| 551 | halfWidth, DEFAULT_ALIGN, TextDirectionHeuristics.FIRSTSTRONG_LTR, |
| 552 | SPACE_MULTI, SPACE_ADD, false, TextUtils.TruncateAt.END, halfWidth, 1); |
| 553 | assertTrue(layout.getEllipsisCount(0) > 0); |
| 554 | assertTrue(layout.getEllipsisStart(0) > 0); |
| 555 | } |
| 556 | } |
| 557 | |
| 558 | { |
| 559 | // 2 family emojis (11 code units + 11 code units). |
| 560 | final String text = "\uD83D\uDC68\u200D\uD83D\uDC69\u200D\uD83D\uDC67\u200D\uD83D\uDC66" |
| 561 | + "\uD83D\uDC68\u200D\uD83D\uDC69\u200D\uD83D\uDC67\u200D\uD83D\uDC66"; |
| 562 | final float textWidth = mDefaultPaint.measureText(text); |
| 563 | |
| 564 | final TextUtils.TruncateAt[] kinds = {TextUtils.TruncateAt.START, |
| 565 | TextUtils.TruncateAt.MIDDLE, TextUtils.TruncateAt.END}; |
| 566 | for (final TextUtils.TruncateAt kind : kinds) { |
| 567 | for (int i = 0; i <= 8; i++) { |
| 568 | int avail = (int) (textWidth * i / 7.0f); |
| 569 | StaticLayout layout = new StaticLayout(text, 0, text.length(), mDefaultPaint, |
| 570 | avail, DEFAULT_ALIGN, TextDirectionHeuristics.FIRSTSTRONG_LTR, |
| 571 | SPACE_MULTI, SPACE_ADD, false, kind, avail, 1); |
| 572 | |
| 573 | assertTrue(layout.getEllipsisCount(0) == text.length() |
| 574 | || layout.getEllipsisCount(0) == text.length() / 2 |
| 575 | || layout.getEllipsisCount(0) == 0); |
| 576 | } |
| 577 | } |
| 578 | } |
| 579 | } |
| 580 | |
| 581 | // String wrapper for testing not well known implementation of CharSequence. |
| 582 | private class FakeCharSequence implements CharSequence { |
| 583 | private String mStr; |
| 584 | |
| 585 | FakeCharSequence(String str) { |
| 586 | mStr = str; |
| 587 | } |
| 588 | |
| 589 | @Override |
| 590 | public char charAt(int index) { |
| 591 | return mStr.charAt(index); |
| 592 | } |
| 593 | |
| 594 | @Override |
| 595 | public int length() { |
| 596 | return mStr.length(); |
| 597 | } |
| 598 | |
| 599 | @Override |
| 600 | public CharSequence subSequence(int start, int end) { |
| 601 | return mStr.subSequence(start, end); |
| 602 | } |
| 603 | |
| 604 | @Override |
| 605 | public String toString() { |
| 606 | return mStr; |
| 607 | } |
| 608 | }; |
| 609 | |
| 610 | private List<CharSequence> buildTestCharSequences(String testString, Normalizer.Form[] forms) { |
| 611 | List<CharSequence> result = new ArrayList<>(); |
| 612 | |
| 613 | List<String> normalizedStrings = new ArrayList<>(); |
| 614 | for (Normalizer.Form form: forms) { |
| 615 | normalizedStrings.add(Normalizer.normalize(testString, form)); |
| 616 | } |
| 617 | |
| 618 | for (String str: normalizedStrings) { |
| 619 | result.add(str); |
| 620 | result.add(new SpannedString(str)); |
| 621 | result.add(new SpannableString(str)); |
| 622 | result.add(new SpannableStringBuilder(str)); // as a GraphicsOperations implementation. |
| 623 | result.add(new FakeCharSequence(str)); // as a not well known implementation. |
| 624 | } |
| 625 | return result; |
| 626 | } |
| 627 | |
| 628 | private String buildTestMessage(CharSequence seq) { |
| 629 | String normalized; |
| 630 | if (Normalizer.isNormalized(seq, Normalizer.Form.NFC)) { |
| 631 | normalized = "NFC"; |
| 632 | } else if (Normalizer.isNormalized(seq, Normalizer.Form.NFD)) { |
| 633 | normalized = "NFD"; |
| 634 | } else if (Normalizer.isNormalized(seq, Normalizer.Form.NFKC)) { |
| 635 | normalized = "NFKC"; |
| 636 | } else if (Normalizer.isNormalized(seq, Normalizer.Form.NFKD)) { |
| 637 | normalized = "NFKD"; |
| 638 | } else { |
| 639 | throw new IllegalStateException("Normalized form is not NFC/NFD/NFKC/NFKD"); |
| 640 | } |
| 641 | |
| 642 | StringBuilder builder = new StringBuilder(); |
| 643 | for (int i = 0; i < seq.length(); ++i) { |
| 644 | builder.append(String.format("0x%04X ", Integer.valueOf(seq.charAt(i)))); |
| 645 | } |
| 646 | |
| 647 | return "testString: \"" + seq.toString() + "\"[" + builder.toString() + "]" |
| 648 | + ", class: " + seq.getClass().getName() |
| 649 | + ", Normalization: " + normalized; |
| 650 | } |
| 651 | |
| 652 | @Test |
| 653 | public void testGetOffset_UNICODE_Hebrew() { |
| 654 | String testString = "\u05DE\u05E1\u05E2\u05D3\u05D4"; // Hebrew Characters |
| 655 | for (CharSequence seq: buildTestCharSequences(testString, Normalizer.Form.values())) { |
| 656 | StaticLayout layout = new StaticLayout(seq, mDefaultPaint, |
| 657 | DEFAULT_OUTER_WIDTH, DEFAULT_ALIGN, |
| 658 | TextDirectionHeuristics.RTL, SPACE_MULTI, SPACE_ADD, true); |
| 659 | |
| 660 | String testLabel = buildTestMessage(seq); |
| 661 | |
| 662 | assertEquals(testLabel, 1, layout.getOffsetToLeftOf(0)); |
| 663 | assertEquals(testLabel, 2, layout.getOffsetToLeftOf(1)); |
| 664 | assertEquals(testLabel, 3, layout.getOffsetToLeftOf(2)); |
| 665 | assertEquals(testLabel, 4, layout.getOffsetToLeftOf(3)); |
| 666 | assertEquals(testLabel, 5, layout.getOffsetToLeftOf(4)); |
| 667 | assertEquals(testLabel, 5, layout.getOffsetToLeftOf(5)); |
| 668 | |
| 669 | assertEquals(testLabel, 0, layout.getOffsetToRightOf(0)); |
| 670 | assertEquals(testLabel, 0, layout.getOffsetToRightOf(1)); |
| 671 | assertEquals(testLabel, 1, layout.getOffsetToRightOf(2)); |
| 672 | assertEquals(testLabel, 2, layout.getOffsetToRightOf(3)); |
| 673 | assertEquals(testLabel, 3, layout.getOffsetToRightOf(4)); |
| 674 | assertEquals(testLabel, 4, layout.getOffsetToRightOf(5)); |
| 675 | } |
| 676 | } |
Roozbeh Pournader | ef7cfa1 | 2017-06-15 12:39:04 -0700 | [diff] [blame] | 677 | |
| 678 | @Test |
| 679 | public void testLocaleSpanAffectsHyphenation() { |
| 680 | TextPaint paint = new TextPaint(); |
| 681 | paint.setTextLocale(Locale.US); |
| 682 | // Private use language, with no hyphenation rules. |
| 683 | final Locale privateLocale = Locale.forLanguageTag("qaa"); |
| 684 | |
| 685 | final String longWord = "philanthropic"; |
| 686 | final float wordWidth = paint.measureText(longWord); |
| 687 | // Wide enough that words get hyphenated by default. |
| 688 | final int paraWidth = Math.round(wordWidth * 1.8f); |
| 689 | final String sentence = longWord + " " + longWord + " " + longWord + " " + longWord + " " |
| 690 | + longWord + " " + longWord; |
| 691 | |
| 692 | final int numEnglishLines = StaticLayout.Builder |
| 693 | .obtain(sentence, 0, sentence.length(), paint, paraWidth) |
| 694 | .setHyphenationFrequency(Layout.HYPHENATION_FREQUENCY_FULL) |
| 695 | .setBreakStrategy(Layout.BREAK_STRATEGY_HIGH_QUALITY) |
| 696 | .build() |
| 697 | .getLineCount(); |
| 698 | |
| 699 | { |
| 700 | final SpannableString text = new SpannableString(sentence); |
| 701 | text.setSpan(new LocaleSpan(privateLocale), 0, text.length(), |
| 702 | Spanned.SPAN_INCLUSIVE_INCLUSIVE); |
| 703 | final int numPrivateLocaleLines = StaticLayout.Builder |
| 704 | .obtain(text, 0, text.length(), paint, paraWidth) |
| 705 | .setHyphenationFrequency(Layout.HYPHENATION_FREQUENCY_FULL) |
| 706 | .setBreakStrategy(Layout.BREAK_STRATEGY_HIGH_QUALITY) |
| 707 | .build() |
| 708 | .getLineCount(); |
| 709 | |
| 710 | // Since the paragraph set to English gets hyphenated, the number of lines would be |
| 711 | // smaller than the number of lines when there is a span setting a language that |
| 712 | // doesn't get hyphenated. |
| 713 | assertTrue(numEnglishLines < numPrivateLocaleLines); |
| 714 | } |
| 715 | { |
| 716 | // Same as the above test, except that the locale span now uses a locale list starting |
| 717 | // with the private non-hyphenating locale. |
| 718 | final SpannableString text = new SpannableString(sentence); |
| 719 | final LocaleList locales = new LocaleList(privateLocale, Locale.US); |
| 720 | text.setSpan(new LocaleSpan(locales), 0, text.length(), |
| 721 | Spanned.SPAN_INCLUSIVE_INCLUSIVE); |
| 722 | final int numPrivateLocaleLines = StaticLayout.Builder |
| 723 | .obtain(text, 0, text.length(), paint, paraWidth) |
| 724 | .setHyphenationFrequency(Layout.HYPHENATION_FREQUENCY_FULL) |
| 725 | .setBreakStrategy(Layout.BREAK_STRATEGY_HIGH_QUALITY) |
| 726 | .build() |
| 727 | .getLineCount(); |
| 728 | |
| 729 | assertTrue(numEnglishLines < numPrivateLocaleLines); |
| 730 | } |
| 731 | { |
| 732 | final SpannableString text = new SpannableString(sentence); |
| 733 | // Apply the private LocaleSpan only to the first word, which is not getting hyphenated |
| 734 | // anyway. |
| 735 | text.setSpan(new LocaleSpan(privateLocale), 0, longWord.length(), |
| 736 | Spanned.SPAN_INCLUSIVE_INCLUSIVE); |
| 737 | final int numPrivateLocaleLines = StaticLayout.Builder |
| 738 | .obtain(text, 0, text.length(), paint, paraWidth) |
| 739 | .setHyphenationFrequency(Layout.HYPHENATION_FREQUENCY_FULL) |
| 740 | .setBreakStrategy(Layout.BREAK_STRATEGY_HIGH_QUALITY) |
| 741 | .build() |
| 742 | .getLineCount(); |
| 743 | |
| 744 | // Since the first word is not hyphenated anyway (there's enough width), the LocaleSpan |
| 745 | // should not affect the layout. |
| 746 | assertEquals(numEnglishLines, numPrivateLocaleLines); |
| 747 | } |
| 748 | } |
Doug Felt | 6ad5a7a | 2010-02-19 15:44:35 -0800 | [diff] [blame] | 749 | } |