The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2006 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.text; |
| 18 | |
| 19 | import android.graphics.Paint; |
| 20 | import com.android.internal.util.ArrayUtils; |
| 21 | import android.util.Log; |
| 22 | import android.text.style.LeadingMarginSpan; |
| 23 | import android.text.style.LineHeightSpan; |
| 24 | import android.text.style.MetricAffectingSpan; |
| 25 | import android.text.style.ReplacementSpan; |
| 26 | |
| 27 | /** |
| 28 | * StaticLayout is a Layout for text that will not be edited after it |
| 29 | * is laid out. Use {@link DynamicLayout} for text that may change. |
| 30 | * <p>This is used by widgets to control text layout. You should not need |
| 31 | * to use this class directly unless you are implementing your own widget |
| 32 | * or custom display object, or would be tempted to call |
| 33 | * {@link android.graphics.Canvas#drawText(java.lang.CharSequence, int, int, float, float, android.graphics.Paint) |
| 34 | * Canvas.drawText()} directly.</p> |
| 35 | */ |
| 36 | public class |
| 37 | StaticLayout |
| 38 | extends Layout |
| 39 | { |
| 40 | public StaticLayout(CharSequence source, TextPaint paint, |
| 41 | int width, |
| 42 | Alignment align, float spacingmult, float spacingadd, |
| 43 | boolean includepad) { |
| 44 | this(source, 0, source.length(), paint, width, align, |
| 45 | spacingmult, spacingadd, includepad); |
| 46 | } |
| 47 | |
| 48 | public StaticLayout(CharSequence source, int bufstart, int bufend, |
| 49 | TextPaint paint, int outerwidth, |
| 50 | Alignment align, |
| 51 | float spacingmult, float spacingadd, |
| 52 | boolean includepad) { |
| 53 | this(source, bufstart, bufend, paint, outerwidth, align, |
| 54 | spacingmult, spacingadd, includepad, null, 0); |
| 55 | } |
| 56 | |
| 57 | public StaticLayout(CharSequence source, int bufstart, int bufend, |
| 58 | TextPaint paint, int outerwidth, |
| 59 | Alignment align, |
| 60 | float spacingmult, float spacingadd, |
| 61 | boolean includepad, |
| 62 | TextUtils.TruncateAt ellipsize, int ellipsizedWidth) { |
| 63 | super((ellipsize == null) |
| 64 | ? source |
| 65 | : (source instanceof Spanned) |
| 66 | ? new SpannedEllipsizer(source) |
| 67 | : new Ellipsizer(source), |
| 68 | paint, outerwidth, align, spacingmult, spacingadd); |
| 69 | |
| 70 | /* |
| 71 | * This is annoying, but we can't refer to the layout until |
| 72 | * superclass construction is finished, and the superclass |
| 73 | * constructor wants the reference to the display text. |
| 74 | * |
| 75 | * This will break if the superclass constructor ever actually |
| 76 | * cares about the content instead of just holding the reference. |
| 77 | */ |
| 78 | if (ellipsize != null) { |
| 79 | Ellipsizer e = (Ellipsizer) getText(); |
| 80 | |
| 81 | e.mLayout = this; |
| 82 | e.mWidth = ellipsizedWidth; |
| 83 | e.mMethod = ellipsize; |
| 84 | mEllipsizedWidth = ellipsizedWidth; |
| 85 | |
| 86 | mColumns = COLUMNS_ELLIPSIZE; |
| 87 | } else { |
| 88 | mColumns = COLUMNS_NORMAL; |
| 89 | mEllipsizedWidth = outerwidth; |
| 90 | } |
| 91 | |
| 92 | mLines = new int[ArrayUtils.idealIntArraySize(2 * mColumns)]; |
| 93 | mLineDirections = new Directions[ |
| 94 | ArrayUtils.idealIntArraySize(2 * mColumns)]; |
| 95 | |
| 96 | generate(source, bufstart, bufend, paint, outerwidth, align, |
| 97 | spacingmult, spacingadd, includepad, includepad, |
| 98 | ellipsize != null, ellipsizedWidth, ellipsize); |
| 99 | |
| 100 | mChdirs = null; |
| 101 | mChs = null; |
| 102 | mWidths = null; |
| 103 | mFontMetricsInt = null; |
| 104 | } |
| 105 | |
| 106 | /* package */ StaticLayout(boolean ellipsize) { |
| 107 | super(null, null, 0, null, 0, 0); |
| 108 | |
| 109 | mColumns = COLUMNS_ELLIPSIZE; |
| 110 | mLines = new int[ArrayUtils.idealIntArraySize(2 * mColumns)]; |
| 111 | mLineDirections = new Directions[ |
| 112 | ArrayUtils.idealIntArraySize(2 * mColumns)]; |
| 113 | } |
| 114 | |
| 115 | /* package */ void generate(CharSequence source, int bufstart, int bufend, |
| 116 | TextPaint paint, int outerwidth, |
| 117 | Alignment align, |
| 118 | float spacingmult, float spacingadd, |
| 119 | boolean includepad, boolean trackpad, |
| 120 | boolean breakOnlyAtSpaces, |
| 121 | float ellipsizedWidth, TextUtils.TruncateAt where) { |
| 122 | mLineCount = 0; |
| 123 | |
| 124 | int v = 0; |
| 125 | boolean needMultiply = (spacingmult != 1 || spacingadd != 0); |
| 126 | |
| 127 | Paint.FontMetricsInt fm = mFontMetricsInt; |
| 128 | int[] choosehtv = null; |
| 129 | |
| 130 | int end = TextUtils.indexOf(source, '\n', bufstart, bufend); |
| 131 | int bufsiz = end >= 0 ? end - bufstart : bufend - bufstart; |
| 132 | boolean first = true; |
| 133 | |
| 134 | if (mChdirs == null) { |
| 135 | mChdirs = new byte[ArrayUtils.idealByteArraySize(bufsiz + 1)]; |
| 136 | mChs = new char[ArrayUtils.idealCharArraySize(bufsiz + 1)]; |
| 137 | mWidths = new float[ArrayUtils.idealIntArraySize((bufsiz + 1) * 2)]; |
| 138 | } |
| 139 | |
| 140 | byte[] chdirs = mChdirs; |
| 141 | char[] chs = mChs; |
| 142 | float[] widths = mWidths; |
| 143 | |
| 144 | AlteredCharSequence alter = null; |
| 145 | Spanned spanned = null; |
| 146 | |
| 147 | if (source instanceof Spanned) |
| 148 | spanned = (Spanned) source; |
| 149 | |
| 150 | int DEFAULT_DIR = DIR_LEFT_TO_RIGHT; // XXX |
| 151 | |
| 152 | for (int start = bufstart; start <= bufend; start = end) { |
| 153 | if (first) |
| 154 | first = false; |
| 155 | else |
| 156 | end = TextUtils.indexOf(source, '\n', start, bufend); |
| 157 | |
| 158 | if (end < 0) |
| 159 | end = bufend; |
| 160 | else |
| 161 | end++; |
| 162 | |
| 163 | int firstwidth = outerwidth; |
| 164 | int restwidth = outerwidth; |
| 165 | |
| 166 | LineHeightSpan[] chooseht = null; |
| 167 | |
| 168 | if (spanned != null) { |
| 169 | LeadingMarginSpan[] sp; |
| 170 | |
| 171 | sp = spanned.getSpans(start, end, LeadingMarginSpan.class); |
| 172 | for (int i = 0; i < sp.length; i++) { |
| 173 | firstwidth -= sp[i].getLeadingMargin(true); |
| 174 | restwidth -= sp[i].getLeadingMargin(false); |
| 175 | } |
| 176 | |
| 177 | chooseht = spanned.getSpans(start, end, LineHeightSpan.class); |
| 178 | |
| 179 | if (chooseht.length != 0) { |
| 180 | if (choosehtv == null || |
| 181 | choosehtv.length < chooseht.length) { |
| 182 | choosehtv = new int[ArrayUtils.idealIntArraySize( |
| 183 | chooseht.length)]; |
| 184 | } |
| 185 | |
| 186 | for (int i = 0; i < chooseht.length; i++) { |
| 187 | int o = spanned.getSpanStart(chooseht[i]); |
| 188 | |
| 189 | if (o < start) { |
| 190 | // starts in this layout, before the |
| 191 | // current paragraph |
| 192 | |
| 193 | choosehtv[i] = getLineTop(getLineForOffset(o)); |
| 194 | } else { |
| 195 | // starts in this paragraph |
| 196 | |
| 197 | choosehtv[i] = v; |
| 198 | } |
| 199 | } |
| 200 | } |
| 201 | } |
| 202 | |
| 203 | if (end - start > chdirs.length) { |
| 204 | chdirs = new byte[ArrayUtils.idealByteArraySize(end - start)]; |
| 205 | mChdirs = chdirs; |
| 206 | } |
| 207 | if (end - start > chs.length) { |
| 208 | chs = new char[ArrayUtils.idealCharArraySize(end - start)]; |
| 209 | mChs = chs; |
| 210 | } |
| 211 | if ((end - start) * 2 > widths.length) { |
| 212 | widths = new float[ArrayUtils.idealIntArraySize((end - start) * 2)]; |
| 213 | mWidths = widths; |
| 214 | } |
| 215 | |
| 216 | TextUtils.getChars(source, start, end, chs, 0); |
| 217 | final int n = end - start; |
| 218 | |
| 219 | boolean easy = true; |
| 220 | boolean altered = false; |
| 221 | int dir = DEFAULT_DIR; // XXX |
| 222 | |
| 223 | for (int i = 0; i < n; i++) { |
| 224 | if (chs[i] >= FIRST_RIGHT_TO_LEFT) { |
| 225 | easy = false; |
| 226 | break; |
| 227 | } |
| 228 | } |
| 229 | |
| 230 | if (!easy) { |
| 231 | AndroidCharacter.getDirectionalities(chs, chdirs, end - start); |
| 232 | |
| 233 | /* |
| 234 | * Determine primary paragraph direction |
| 235 | */ |
| 236 | |
| 237 | for (int j = start; j < end; j++) { |
| 238 | int d = chdirs[j - start]; |
| 239 | |
| 240 | if (d == Character.DIRECTIONALITY_LEFT_TO_RIGHT) { |
| 241 | dir = DIR_LEFT_TO_RIGHT; |
| 242 | break; |
| 243 | } |
| 244 | if (d == Character.DIRECTIONALITY_RIGHT_TO_LEFT) { |
| 245 | dir = DIR_RIGHT_TO_LEFT; |
| 246 | break; |
| 247 | } |
| 248 | } |
| 249 | |
| 250 | /* |
| 251 | * XXX Explicit overrides should go here |
| 252 | */ |
| 253 | |
| 254 | /* |
| 255 | * Weak type resolution |
| 256 | */ |
| 257 | |
| 258 | final byte SOR = dir == DIR_LEFT_TO_RIGHT ? |
| 259 | Character.DIRECTIONALITY_LEFT_TO_RIGHT : |
| 260 | Character.DIRECTIONALITY_RIGHT_TO_LEFT; |
| 261 | |
| 262 | // dump(chdirs, n, "initial"); |
| 263 | |
| 264 | // W1 non spacing marks |
| 265 | for (int j = 0; j < n; j++) { |
| 266 | if (chdirs[j] == Character.NON_SPACING_MARK) { |
| 267 | if (j == 0) |
| 268 | chdirs[j] = SOR; |
| 269 | else |
| 270 | chdirs[j] = chdirs[j - 1]; |
| 271 | } |
| 272 | } |
| 273 | |
| 274 | // dump(chdirs, n, "W1"); |
| 275 | |
| 276 | // W2 european numbers |
| 277 | byte cur = SOR; |
| 278 | for (int j = 0; j < n; j++) { |
| 279 | byte d = chdirs[j]; |
| 280 | |
| 281 | if (d == Character.DIRECTIONALITY_LEFT_TO_RIGHT || |
| 282 | d == Character.DIRECTIONALITY_RIGHT_TO_LEFT || |
| 283 | d == Character.DIRECTIONALITY_RIGHT_TO_LEFT_ARABIC) |
| 284 | cur = d; |
| 285 | else if (d == Character.DIRECTIONALITY_EUROPEAN_NUMBER) { |
| 286 | if (cur == |
| 287 | Character.DIRECTIONALITY_RIGHT_TO_LEFT_ARABIC) |
| 288 | chdirs[j] = Character.DIRECTIONALITY_ARABIC_NUMBER; |
| 289 | } |
| 290 | } |
| 291 | |
| 292 | // dump(chdirs, n, "W2"); |
| 293 | |
| 294 | // W3 arabic letters |
| 295 | for (int j = 0; j < n; j++) { |
| 296 | if (chdirs[j] == Character.DIRECTIONALITY_RIGHT_TO_LEFT_ARABIC) |
| 297 | chdirs[j] = Character.DIRECTIONALITY_RIGHT_TO_LEFT; |
| 298 | } |
| 299 | |
| 300 | // dump(chdirs, n, "W3"); |
| 301 | |
| 302 | // W4 single separator between numbers |
| 303 | for (int j = 1; j < n - 1; j++) { |
| 304 | byte d = chdirs[j]; |
| 305 | byte prev = chdirs[j - 1]; |
| 306 | byte next = chdirs[j + 1]; |
| 307 | |
| 308 | if (d == Character.DIRECTIONALITY_EUROPEAN_NUMBER_SEPARATOR) { |
| 309 | if (prev == Character.DIRECTIONALITY_EUROPEAN_NUMBER && |
| 310 | next == Character.DIRECTIONALITY_EUROPEAN_NUMBER) |
| 311 | chdirs[j] = Character.DIRECTIONALITY_EUROPEAN_NUMBER; |
| 312 | } else if (d == Character.DIRECTIONALITY_COMMON_NUMBER_SEPARATOR) { |
| 313 | if (prev == Character.DIRECTIONALITY_EUROPEAN_NUMBER && |
| 314 | next == Character.DIRECTIONALITY_EUROPEAN_NUMBER) |
| 315 | chdirs[j] = Character.DIRECTIONALITY_EUROPEAN_NUMBER; |
| 316 | if (prev == Character.DIRECTIONALITY_ARABIC_NUMBER && |
| 317 | next == Character.DIRECTIONALITY_ARABIC_NUMBER) |
| 318 | chdirs[j] = Character.DIRECTIONALITY_ARABIC_NUMBER; |
| 319 | } |
| 320 | } |
| 321 | |
| 322 | // dump(chdirs, n, "W4"); |
| 323 | |
| 324 | // W5 european number terminators |
| 325 | boolean adjacent = false; |
| 326 | for (int j = 0; j < n; j++) { |
| 327 | byte d = chdirs[j]; |
| 328 | |
| 329 | if (d == Character.DIRECTIONALITY_EUROPEAN_NUMBER) |
| 330 | adjacent = true; |
| 331 | else if (d == Character.DIRECTIONALITY_EUROPEAN_NUMBER_TERMINATOR && adjacent) |
| 332 | chdirs[j] = Character.DIRECTIONALITY_EUROPEAN_NUMBER; |
| 333 | else |
| 334 | adjacent = false; |
| 335 | } |
| 336 | |
| 337 | //dump(chdirs, n, "W5"); |
| 338 | |
| 339 | // W5 european number terminators part 2, |
| 340 | // W6 separators and terminators |
| 341 | adjacent = false; |
| 342 | for (int j = n - 1; j >= 0; j--) { |
| 343 | byte d = chdirs[j]; |
| 344 | |
| 345 | if (d == Character.DIRECTIONALITY_EUROPEAN_NUMBER) |
| 346 | adjacent = true; |
| 347 | else if (d == Character.DIRECTIONALITY_EUROPEAN_NUMBER_TERMINATOR) { |
| 348 | if (adjacent) |
| 349 | chdirs[j] = Character.DIRECTIONALITY_EUROPEAN_NUMBER; |
| 350 | else |
| 351 | chdirs[j] = Character.DIRECTIONALITY_OTHER_NEUTRALS; |
| 352 | } |
| 353 | else { |
| 354 | adjacent = false; |
| 355 | |
| 356 | if (d == Character.DIRECTIONALITY_EUROPEAN_NUMBER_SEPARATOR || |
| 357 | d == Character.DIRECTIONALITY_COMMON_NUMBER_SEPARATOR || |
| 358 | d == Character.DIRECTIONALITY_PARAGRAPH_SEPARATOR || |
| 359 | d == Character.DIRECTIONALITY_SEGMENT_SEPARATOR) |
| 360 | chdirs[j] = Character.DIRECTIONALITY_OTHER_NEUTRALS; |
| 361 | } |
| 362 | } |
| 363 | |
| 364 | // dump(chdirs, n, "W6"); |
| 365 | |
| 366 | // W7 strong direction of european numbers |
| 367 | cur = SOR; |
| 368 | for (int j = 0; j < n; j++) { |
| 369 | byte d = chdirs[j]; |
| 370 | |
| 371 | if (d == SOR || |
| 372 | d == Character.DIRECTIONALITY_LEFT_TO_RIGHT || |
| 373 | d == Character.DIRECTIONALITY_RIGHT_TO_LEFT) |
| 374 | cur = d; |
| 375 | |
| 376 | if (d == Character.DIRECTIONALITY_EUROPEAN_NUMBER) |
| 377 | chdirs[j] = cur; |
| 378 | } |
| 379 | |
| 380 | // dump(chdirs, n, "W7"); |
| 381 | |
| 382 | // N1, N2 neutrals |
| 383 | cur = SOR; |
| 384 | for (int j = 0; j < n; j++) { |
| 385 | byte d = chdirs[j]; |
| 386 | |
| 387 | if (d == Character.DIRECTIONALITY_LEFT_TO_RIGHT || |
| 388 | d == Character.DIRECTIONALITY_RIGHT_TO_LEFT) { |
| 389 | cur = d; |
| 390 | } else if (d == Character.DIRECTIONALITY_EUROPEAN_NUMBER || |
| 391 | d == Character.DIRECTIONALITY_ARABIC_NUMBER) { |
| 392 | cur = Character.DIRECTIONALITY_RIGHT_TO_LEFT; |
| 393 | } else { |
| 394 | byte dd = SOR; |
| 395 | int k; |
| 396 | |
| 397 | for (k = j + 1; k < n; k++) { |
| 398 | dd = chdirs[k]; |
| 399 | |
| 400 | if (dd == Character.DIRECTIONALITY_LEFT_TO_RIGHT || |
| 401 | dd == Character.DIRECTIONALITY_RIGHT_TO_LEFT) { |
| 402 | break; |
| 403 | } |
| 404 | if (dd == Character.DIRECTIONALITY_EUROPEAN_NUMBER || |
| 405 | dd == Character.DIRECTIONALITY_ARABIC_NUMBER) { |
| 406 | dd = Character.DIRECTIONALITY_RIGHT_TO_LEFT; |
| 407 | break; |
| 408 | } |
| 409 | } |
| 410 | |
| 411 | for (int y = j; y < k; y++) { |
| 412 | if (dd == cur) |
| 413 | chdirs[y] = cur; |
| 414 | else |
| 415 | chdirs[y] = SOR; |
| 416 | } |
| 417 | |
| 418 | j = k - 1; |
| 419 | } |
| 420 | } |
| 421 | |
| 422 | // dump(chdirs, n, "final"); |
| 423 | |
| 424 | // extra: enforce that all tabs go the primary direction |
| 425 | |
| 426 | for (int j = 0; j < n; j++) { |
| 427 | if (chs[j] == '\t') |
| 428 | chdirs[j] = SOR; |
| 429 | } |
| 430 | |
| 431 | // extra: enforce that object replacements go to the |
| 432 | // primary direction |
| 433 | // and that none of the underlying characters are treated |
| 434 | // as viable breakpoints |
| 435 | |
| 436 | if (source instanceof Spanned) { |
| 437 | Spanned sp = (Spanned) source; |
| 438 | ReplacementSpan[] spans = sp.getSpans(start, end, ReplacementSpan.class); |
| 439 | |
| 440 | for (int y = 0; y < spans.length; y++) { |
| 441 | int a = sp.getSpanStart(spans[y]); |
| 442 | int b = sp.getSpanEnd(spans[y]); |
| 443 | |
| 444 | for (int x = a; x < b; x++) { |
| 445 | chdirs[x - start] = SOR; |
| 446 | chs[x - start] = '\uFFFC'; |
| 447 | } |
| 448 | } |
| 449 | } |
| 450 | |
| 451 | // Do mirroring for right-to-left segments |
| 452 | |
| 453 | for (int i = 0; i < n; i++) { |
| 454 | if (chdirs[i] == Character.DIRECTIONALITY_RIGHT_TO_LEFT) { |
| 455 | int j; |
| 456 | |
| 457 | for (j = i; j < n; j++) { |
| 458 | if (chdirs[j] != |
| 459 | Character.DIRECTIONALITY_RIGHT_TO_LEFT) |
| 460 | break; |
| 461 | } |
| 462 | |
| 463 | if (AndroidCharacter.mirror(chs, i, j - i)) |
| 464 | altered = true; |
| 465 | |
| 466 | i = j - 1; |
| 467 | } |
| 468 | } |
| 469 | } |
| 470 | |
| 471 | CharSequence sub; |
| 472 | |
| 473 | if (altered) { |
| 474 | if (alter == null) |
| 475 | alter = AlteredCharSequence.make(source, chs, start, end); |
| 476 | else |
| 477 | alter.update(chs, start, end); |
| 478 | |
| 479 | sub = alter; |
| 480 | } else { |
| 481 | sub = source; |
| 482 | } |
| 483 | |
| 484 | int width = firstwidth; |
| 485 | |
| 486 | float w = 0; |
| 487 | int here = start; |
| 488 | |
| 489 | int ok = start; |
| 490 | float okwidth = w; |
| 491 | int okascent = 0, okdescent = 0, oktop = 0, okbottom = 0; |
| 492 | |
| 493 | int fit = start; |
| 494 | float fitwidth = w; |
| 495 | int fitascent = 0, fitdescent = 0, fittop = 0, fitbottom = 0; |
| 496 | |
| 497 | boolean tab = false; |
| 498 | |
| 499 | int next; |
| 500 | for (int i = start; i < end; i = next) { |
| 501 | if (spanned == null) |
| 502 | next = end; |
| 503 | else |
| 504 | next = spanned.nextSpanTransition(i, end, |
| 505 | MetricAffectingSpan. |
| 506 | class); |
| 507 | |
| 508 | if (spanned == null) { |
| 509 | paint.getTextWidths(sub, i, next, widths); |
| 510 | System.arraycopy(widths, 0, widths, |
| 511 | end - start + (i - start), next - i); |
| 512 | |
| 513 | paint.getFontMetricsInt(fm); |
| 514 | } else { |
| 515 | mWorkPaint.baselineShift = 0; |
| 516 | |
| 517 | Styled.getTextWidths(paint, mWorkPaint, |
| 518 | spanned, i, next, |
| 519 | widths, fm); |
| 520 | System.arraycopy(widths, 0, widths, |
| 521 | end - start + (i - start), next - i); |
| 522 | |
| 523 | if (mWorkPaint.baselineShift < 0) { |
| 524 | fm.ascent += mWorkPaint.baselineShift; |
| 525 | fm.top += mWorkPaint.baselineShift; |
| 526 | } else { |
| 527 | fm.descent += mWorkPaint.baselineShift; |
| 528 | fm.bottom += mWorkPaint.baselineShift; |
| 529 | } |
| 530 | } |
| 531 | |
| 532 | int fmtop = fm.top; |
| 533 | int fmbottom = fm.bottom; |
| 534 | int fmascent = fm.ascent; |
| 535 | int fmdescent = fm.descent; |
| 536 | |
| 537 | if (false) { |
| 538 | StringBuilder sb = new StringBuilder(); |
| 539 | for (int j = i; j < next; j++) { |
| 540 | sb.append(widths[j - start + (end - start)]); |
| 541 | sb.append(' '); |
| 542 | } |
| 543 | |
| 544 | Log.e("text", sb.toString()); |
| 545 | } |
| 546 | |
| 547 | for (int j = i; j < next; j++) { |
| 548 | char c = chs[j - start]; |
| 549 | float before = w; |
| 550 | |
| 551 | switch (c) { |
| 552 | case '\n': |
| 553 | break; |
| 554 | |
| 555 | case '\t': |
| 556 | w = Layout.nextTab(sub, start, end, w, null); |
| 557 | tab = true; |
| 558 | break; |
| 559 | |
| 560 | default: |
| 561 | w += widths[j - start + (end - start)]; |
| 562 | } |
| 563 | |
| 564 | // Log.e("text", "was " + before + " now " + w + " after " + c + " within " + width); |
| 565 | |
| 566 | if (w <= width) { |
| 567 | fitwidth = w; |
| 568 | fit = j + 1; |
| 569 | |
| 570 | if (fmtop < fittop) |
| 571 | fittop = fmtop; |
| 572 | if (fmascent < fitascent) |
| 573 | fitascent = fmascent; |
| 574 | if (fmdescent > fitdescent) |
| 575 | fitdescent = fmdescent; |
| 576 | if (fmbottom > fitbottom) |
| 577 | fitbottom = fmbottom; |
| 578 | |
| 579 | /* |
| 580 | * From the Unicode Line Breaking Algorithm: |
| 581 | * (at least approximately) |
| 582 | * |
| 583 | * .,:; are class IS: breakpoints |
| 584 | * except when adjacent to digits |
| 585 | * / is class SY: a breakpoint |
| 586 | * except when followed by a digit. |
| 587 | * - is class HY: a breakpoint |
| 588 | * except when followed by a digit. |
| 589 | * |
| 590 | * Ideographs are class ID: breakpoints when adjacent. |
| 591 | */ |
| 592 | |
| 593 | if (c == ' ' || c == '\t' || |
| 594 | ((c == '.' || c == ',' || c == ':' || c == ';') && |
| 595 | (j - 1 < here || !Character.isDigit(chs[j - 1 - start])) && |
| 596 | (j + 1 >= next || !Character.isDigit(chs[j + 1 - start]))) || |
| 597 | ((c == '/' || c == '-') && |
| 598 | (j + 1 >= next || !Character.isDigit(chs[j + 1 - start]))) || |
| 599 | (c >= FIRST_CJK && isIdeographic(c) && |
| 600 | j + 1 < next && isIdeographic(chs[j + 1 - start]))) { |
| 601 | okwidth = w; |
| 602 | ok = j + 1; |
| 603 | |
| 604 | if (fittop < oktop) |
| 605 | oktop = fittop; |
| 606 | if (fitascent < okascent) |
| 607 | okascent = fitascent; |
| 608 | if (fitdescent > okdescent) |
| 609 | okdescent = fitdescent; |
| 610 | if (fitbottom > okbottom) |
| 611 | okbottom = fitbottom; |
| 612 | } |
| 613 | } else if (breakOnlyAtSpaces) { |
| 614 | if (ok != here) { |
| 615 | // Log.e("text", "output ok " + here + " to " +ok); |
| 616 | |
| 617 | while (ok < next && chs[ok - start] == ' ') { |
| 618 | ok++; |
| 619 | } |
| 620 | |
| 621 | v = out(source, |
| 622 | here, ok, |
| 623 | okascent, okdescent, oktop, okbottom, |
| 624 | v, |
| 625 | spacingmult, spacingadd, chooseht, |
| 626 | choosehtv, fm, tab, |
| 627 | needMultiply, start, chdirs, dir, easy, |
| 628 | ok == bufend, includepad, trackpad, |
| 629 | widths, start, end - start, |
| 630 | where, ellipsizedWidth, okwidth, |
| 631 | paint); |
| 632 | |
| 633 | here = ok; |
| 634 | } else { |
| 635 | // Act like it fit even though it didn't. |
| 636 | |
| 637 | fitwidth = w; |
| 638 | fit = j + 1; |
| 639 | |
| 640 | if (fmtop < fittop) |
| 641 | fittop = fmtop; |
| 642 | if (fmascent < fitascent) |
| 643 | fitascent = fmascent; |
| 644 | if (fmdescent > fitdescent) |
| 645 | fitdescent = fmdescent; |
| 646 | if (fmbottom > fitbottom) |
| 647 | fitbottom = fmbottom; |
| 648 | } |
| 649 | } else { |
| 650 | if (ok != here) { |
| 651 | // Log.e("text", "output ok " + here + " to " +ok); |
| 652 | |
| 653 | while (ok < next && chs[ok - start] == ' ') { |
| 654 | ok++; |
| 655 | } |
| 656 | |
| 657 | v = out(source, |
| 658 | here, ok, |
| 659 | okascent, okdescent, oktop, okbottom, |
| 660 | v, |
| 661 | spacingmult, spacingadd, chooseht, |
| 662 | choosehtv, fm, tab, |
| 663 | needMultiply, start, chdirs, dir, easy, |
| 664 | ok == bufend, includepad, trackpad, |
| 665 | widths, start, end - start, |
| 666 | where, ellipsizedWidth, okwidth, |
| 667 | paint); |
| 668 | |
| 669 | here = ok; |
| 670 | } else if (fit != here) { |
| 671 | // Log.e("text", "output fit " + here + " to " +fit); |
| 672 | v = out(source, |
| 673 | here, fit, |
| 674 | fitascent, fitdescent, |
| 675 | fittop, fitbottom, |
| 676 | v, |
| 677 | spacingmult, spacingadd, chooseht, |
| 678 | choosehtv, fm, tab, |
| 679 | needMultiply, start, chdirs, dir, easy, |
| 680 | fit == bufend, includepad, trackpad, |
| 681 | widths, start, end - start, |
| 682 | where, ellipsizedWidth, fitwidth, |
| 683 | paint); |
| 684 | |
| 685 | here = fit; |
| 686 | } else { |
| 687 | // Log.e("text", "output one " + here + " to " +(here + 1)); |
| 688 | measureText(paint, mWorkPaint, |
| 689 | source, here, here + 1, fm, tab, |
| 690 | null); |
| 691 | |
| 692 | v = out(source, |
| 693 | here, here+1, |
| 694 | fm.ascent, fm.descent, |
| 695 | fm.top, fm.bottom, |
| 696 | v, |
| 697 | spacingmult, spacingadd, chooseht, |
| 698 | choosehtv, fm, tab, |
| 699 | needMultiply, start, chdirs, dir, easy, |
| 700 | here + 1 == bufend, includepad, |
| 701 | trackpad, |
| 702 | widths, start, end - start, |
| 703 | where, ellipsizedWidth, |
| 704 | widths[here - start], paint); |
| 705 | |
| 706 | here = here + 1; |
| 707 | } |
| 708 | |
| 709 | if (here < i) { |
| 710 | j = next = here; // must remeasure |
| 711 | } else { |
| 712 | j = here - 1; // continue looping |
| 713 | } |
| 714 | |
| 715 | ok = fit = here; |
| 716 | w = 0; |
| 717 | fitascent = fitdescent = fittop = fitbottom = 0; |
| 718 | okascent = okdescent = oktop = okbottom = 0; |
| 719 | |
| 720 | width = restwidth; |
| 721 | } |
| 722 | } |
| 723 | } |
| 724 | |
| 725 | if (end != here) { |
| 726 | if ((fittop | fitbottom | fitdescent | fitascent) == 0) { |
| 727 | paint.getFontMetricsInt(fm); |
| 728 | |
| 729 | fittop = fm.top; |
| 730 | fitbottom = fm.bottom; |
| 731 | fitascent = fm.ascent; |
| 732 | fitdescent = fm.descent; |
| 733 | } |
| 734 | |
| 735 | // Log.e("text", "output rest " + here + " to " + end); |
| 736 | |
| 737 | v = out(source, |
| 738 | here, end, fitascent, fitdescent, |
| 739 | fittop, fitbottom, |
| 740 | v, |
| 741 | spacingmult, spacingadd, chooseht, |
| 742 | choosehtv, fm, tab, |
| 743 | needMultiply, start, chdirs, dir, easy, |
| 744 | end == bufend, includepad, trackpad, |
| 745 | widths, start, end - start, |
| 746 | where, ellipsizedWidth, w, paint); |
| 747 | } |
| 748 | |
| 749 | start = end; |
| 750 | |
| 751 | if (end == bufend) |
| 752 | break; |
| 753 | } |
| 754 | |
| 755 | if (bufend == bufstart || source.charAt(bufend - 1) == '\n') { |
| 756 | // Log.e("text", "output last " + bufend); |
| 757 | |
| 758 | paint.getFontMetricsInt(fm); |
| 759 | |
| 760 | v = out(source, |
| 761 | bufend, bufend, fm.ascent, fm.descent, |
| 762 | fm.top, fm.bottom, |
| 763 | v, |
| 764 | spacingmult, spacingadd, null, |
| 765 | null, fm, false, |
| 766 | needMultiply, bufend, chdirs, DEFAULT_DIR, true, |
| 767 | true, includepad, trackpad, |
| 768 | widths, bufstart, 0, |
| 769 | where, ellipsizedWidth, 0, paint); |
| 770 | } |
| 771 | } |
| 772 | |
| 773 | private static final char FIRST_CJK = '\u2E80'; |
| 774 | /** |
| 775 | * Returns true if the specified character is one of those specified |
| 776 | * as being Ideographic (class ID) by the Unicode Line Breaking Algorithm |
| 777 | * (http://www.unicode.org/unicode/reports/tr14/), and is therefore OK |
| 778 | * to break between a pair of. |
| 779 | */ |
| 780 | private static final boolean isIdeographic(char c) { |
| 781 | if (c >= '\u2E80' && c <= '\u2FFF') { |
| 782 | return true; // CJK, KANGXI RADICALS, DESCRIPTION SYMBOLS |
| 783 | } |
| 784 | if (c == '\u3000') { |
| 785 | return true; // IDEOGRAPHIC SPACE |
| 786 | } |
| 787 | if (c >= '\u3040' && c <= '\u309F') { |
| 788 | return true; // Hiragana (except small characters) |
| 789 | } |
| 790 | if (c >= '\u30A0' && c <= '\u30FF') { |
| 791 | return true; // Katakana (except small characters) |
| 792 | } |
| 793 | if (c >= '\u3400' && c <= '\u4DB5') { |
| 794 | return true; // CJK UNIFIED IDEOGRAPHS EXTENSION A |
| 795 | } |
| 796 | if (c >= '\u4E00' && c <= '\u9FBB') { |
| 797 | return true; // CJK UNIFIED IDEOGRAPHS |
| 798 | } |
| 799 | if (c >= '\uF900' && c <= '\uFAD9') { |
| 800 | return true; // CJK COMPATIBILITY IDEOGRAPHS |
| 801 | } |
| 802 | if (c >= '\uA000' && c <= '\uA48F') { |
| 803 | return true; // YI SYLLABLES |
| 804 | } |
| 805 | if (c >= '\uA490' && c <= '\uA4CF') { |
| 806 | return true; // YI RADICALS |
| 807 | } |
| 808 | if (c >= '\uFE62' && c <= '\uFE66') { |
| 809 | return true; // SMALL PLUS SIGN to SMALL EQUALS SIGN |
| 810 | } |
| 811 | if (c >= '\uFF10' && c <= '\uFF19') { |
| 812 | return true; // WIDE DIGITS |
| 813 | } |
| 814 | |
| 815 | return false; |
| 816 | } |
| 817 | |
| 818 | /* |
| 819 | private static void dump(byte[] data, int count, String label) { |
| 820 | if (false) { |
| 821 | System.out.print(label); |
| 822 | |
| 823 | for (int i = 0; i < count; i++) |
| 824 | System.out.print(" " + data[i]); |
| 825 | |
| 826 | System.out.println(); |
| 827 | } |
| 828 | } |
| 829 | */ |
| 830 | |
| 831 | private static int getFit(TextPaint paint, |
| 832 | TextPaint workPaint, |
| 833 | CharSequence text, int start, int end, |
| 834 | float wid) { |
| 835 | int high = end + 1, low = start - 1, guess; |
| 836 | |
| 837 | while (high - low > 1) { |
| 838 | guess = (high + low) / 2; |
| 839 | |
| 840 | if (measureText(paint, workPaint, |
| 841 | text, start, guess, null, true, null) > wid) |
| 842 | high = guess; |
| 843 | else |
| 844 | low = guess; |
| 845 | } |
| 846 | |
| 847 | if (low < start) |
| 848 | return start; |
| 849 | else |
| 850 | return low; |
| 851 | } |
| 852 | |
| 853 | private int out(CharSequence text, int start, int end, |
| 854 | int above, int below, int top, int bottom, int v, |
| 855 | float spacingmult, float spacingadd, |
| 856 | LineHeightSpan[] chooseht, int[] choosehtv, |
| 857 | Paint.FontMetricsInt fm, boolean tab, |
| 858 | boolean needMultiply, int pstart, byte[] chdirs, |
| 859 | int dir, boolean easy, boolean last, |
| 860 | boolean includepad, boolean trackpad, |
| 861 | float[] widths, int widstart, int widoff, |
| 862 | TextUtils.TruncateAt ellipsize, float ellipsiswidth, |
| 863 | float textwidth, TextPaint paint) { |
| 864 | int j = mLineCount; |
| 865 | int off = j * mColumns; |
| 866 | int want = off + mColumns + TOP; |
| 867 | int[] lines = mLines; |
| 868 | |
| 869 | // Log.e("text", "line " + start + " to " + end + (last ? "===" : "")); |
| 870 | |
| 871 | if (want >= lines.length) { |
| 872 | int nlen = ArrayUtils.idealIntArraySize(want + 1); |
| 873 | int[] grow = new int[nlen]; |
| 874 | System.arraycopy(lines, 0, grow, 0, lines.length); |
| 875 | mLines = grow; |
| 876 | lines = grow; |
| 877 | |
| 878 | Directions[] grow2 = new Directions[nlen]; |
| 879 | System.arraycopy(mLineDirections, 0, grow2, 0, |
| 880 | mLineDirections.length); |
| 881 | mLineDirections = grow2; |
| 882 | } |
| 883 | |
| 884 | if (chooseht != null) { |
| 885 | fm.ascent = above; |
| 886 | fm.descent = below; |
| 887 | fm.top = top; |
| 888 | fm.bottom = bottom; |
| 889 | |
| 890 | for (int i = 0; i < chooseht.length; i++) { |
| 891 | chooseht[i].chooseHeight(text, start, end, choosehtv[i], v, fm); |
| 892 | } |
| 893 | |
| 894 | above = fm.ascent; |
| 895 | below = fm.descent; |
| 896 | top = fm.top; |
| 897 | bottom = fm.bottom; |
| 898 | } |
| 899 | |
| 900 | if (j == 0) { |
| 901 | if (trackpad) { |
| 902 | mTopPadding = top - above; |
| 903 | } |
| 904 | |
| 905 | if (includepad) { |
| 906 | above = top; |
| 907 | } |
| 908 | } |
| 909 | if (last) { |
| 910 | if (trackpad) { |
| 911 | mBottomPadding = bottom - below; |
| 912 | } |
| 913 | |
| 914 | if (includepad) { |
| 915 | below = bottom; |
| 916 | } |
| 917 | } |
| 918 | |
| 919 | int extra; |
| 920 | |
| 921 | if (needMultiply) { |
| 922 | extra = (int) ((below - above) * (spacingmult - 1) |
| 923 | + spacingadd + 0.5); |
| 924 | } else { |
| 925 | extra = 0; |
| 926 | } |
| 927 | |
| 928 | lines[off + START] = start; |
| 929 | lines[off + TOP] = v; |
| 930 | lines[off + DESCENT] = below + extra; |
| 931 | |
| 932 | v += (below - above) + extra; |
| 933 | lines[off + mColumns + START] = end; |
| 934 | lines[off + mColumns + TOP] = v; |
| 935 | |
| 936 | if (tab) |
| 937 | lines[off + TAB] |= TAB_MASK; |
| 938 | |
| 939 | { |
| 940 | lines[off + DIR] |= dir << DIR_SHIFT; |
| 941 | |
| 942 | int cur = Character.DIRECTIONALITY_LEFT_TO_RIGHT; |
| 943 | int count = 0; |
| 944 | |
| 945 | if (!easy) { |
| 946 | for (int k = start; k < end; k++) { |
| 947 | if (chdirs[k - pstart] != cur) { |
| 948 | count++; |
| 949 | cur = chdirs[k - pstart]; |
| 950 | } |
| 951 | } |
| 952 | } |
| 953 | |
| 954 | Directions linedirs; |
| 955 | |
| 956 | if (count == 0) { |
| 957 | linedirs = DIRS_ALL_LEFT_TO_RIGHT; |
| 958 | } else { |
| 959 | short[] ld = new short[count + 1]; |
| 960 | |
| 961 | cur = Character.DIRECTIONALITY_LEFT_TO_RIGHT; |
| 962 | count = 0; |
| 963 | int here = start; |
| 964 | |
| 965 | for (int k = start; k < end; k++) { |
| 966 | if (chdirs[k - pstart] != cur) { |
| 967 | // XXX check to make sure we don't |
| 968 | // overflow short |
| 969 | ld[count++] = (short) (k - here); |
| 970 | cur = chdirs[k - pstart]; |
| 971 | here = k; |
| 972 | } |
| 973 | } |
| 974 | |
| 975 | ld[count] = (short) (end - here); |
| 976 | |
| 977 | if (count == 1 && ld[0] == 0) { |
| 978 | linedirs = DIRS_ALL_RIGHT_TO_LEFT; |
| 979 | } else { |
| 980 | linedirs = new Directions(ld); |
| 981 | } |
| 982 | } |
| 983 | |
| 984 | mLineDirections[j] = linedirs; |
| 985 | |
| 986 | // If ellipsize is in marquee mode, do not apply ellipsis on the first line |
| 987 | if (ellipsize != null && (ellipsize != TextUtils.TruncateAt.MARQUEE || j != 0)) { |
| 988 | calculateEllipsis(start, end, widths, widstart, widoff, |
| 989 | ellipsiswidth, ellipsize, j, |
| 990 | textwidth, paint); |
| 991 | } |
| 992 | } |
| 993 | |
| 994 | mLineCount++; |
| 995 | return v; |
| 996 | } |
| 997 | |
| 998 | private void calculateEllipsis(int linestart, int lineend, |
| 999 | float[] widths, int widstart, int widoff, |
| 1000 | float avail, TextUtils.TruncateAt where, |
| 1001 | int line, float textwidth, TextPaint paint) { |
| 1002 | int len = lineend - linestart; |
| 1003 | |
| 1004 | if (textwidth <= avail) { |
| 1005 | // Everything fits! |
| 1006 | mLines[mColumns * line + ELLIPSIS_START] = 0; |
| 1007 | mLines[mColumns * line + ELLIPSIS_COUNT] = 0; |
| 1008 | return; |
| 1009 | } |
| 1010 | |
| 1011 | float ellipsiswid = paint.measureText("\u2026"); |
| 1012 | int ellipsisStart, ellipsisCount; |
| 1013 | |
| 1014 | if (where == TextUtils.TruncateAt.START) { |
| 1015 | float sum = 0; |
| 1016 | int i; |
| 1017 | |
| 1018 | for (i = len; i >= 0; i--) { |
| 1019 | float w = widths[i - 1 + linestart - widstart + widoff]; |
| 1020 | |
| 1021 | if (w + sum + ellipsiswid > avail) { |
| 1022 | break; |
| 1023 | } |
| 1024 | |
| 1025 | sum += w; |
| 1026 | } |
| 1027 | |
| 1028 | ellipsisStart = 0; |
| 1029 | ellipsisCount = i; |
| 1030 | } else if (where == TextUtils.TruncateAt.END || where == TextUtils.TruncateAt.MARQUEE) { |
| 1031 | float sum = 0; |
| 1032 | int i; |
| 1033 | |
| 1034 | for (i = 0; i < len; i++) { |
| 1035 | float w = widths[i + linestart - widstart + widoff]; |
| 1036 | |
| 1037 | if (w + sum + ellipsiswid > avail) { |
| 1038 | break; |
| 1039 | } |
| 1040 | |
| 1041 | sum += w; |
| 1042 | } |
| 1043 | |
| 1044 | ellipsisStart = i; |
| 1045 | ellipsisCount = len - i; |
| 1046 | } else /* where = TextUtils.TruncateAt.MIDDLE */ { |
| 1047 | float lsum = 0, rsum = 0; |
| 1048 | int left = 0, right = len; |
| 1049 | |
| 1050 | float ravail = (avail - ellipsiswid) / 2; |
| 1051 | for (right = len; right >= 0; right--) { |
| 1052 | float w = widths[right - 1 + linestart - widstart + widoff]; |
| 1053 | |
| 1054 | if (w + rsum > ravail) { |
| 1055 | break; |
| 1056 | } |
| 1057 | |
| 1058 | rsum += w; |
| 1059 | } |
| 1060 | |
| 1061 | float lavail = avail - ellipsiswid - rsum; |
| 1062 | for (left = 0; left < right; left++) { |
| 1063 | float w = widths[left + linestart - widstart + widoff]; |
| 1064 | |
| 1065 | if (w + lsum > lavail) { |
| 1066 | break; |
| 1067 | } |
| 1068 | |
| 1069 | lsum += w; |
| 1070 | } |
| 1071 | |
| 1072 | ellipsisStart = left; |
| 1073 | ellipsisCount = right - left; |
| 1074 | } |
| 1075 | |
| 1076 | mLines[mColumns * line + ELLIPSIS_START] = ellipsisStart; |
| 1077 | mLines[mColumns * line + ELLIPSIS_COUNT] = ellipsisCount; |
| 1078 | } |
| 1079 | |
| 1080 | // Override the baseclass so we can directly access our members, |
| 1081 | // rather than relying on member functions. |
| 1082 | // The logic mirrors that of Layout.getLineForVertical |
| 1083 | // FIXME: It may be faster to do a linear search for layouts without many lines. |
| 1084 | public int getLineForVertical(int vertical) { |
| 1085 | int high = mLineCount; |
| 1086 | int low = -1; |
| 1087 | int guess; |
| 1088 | int[] lines = mLines; |
| 1089 | while (high - low > 1) { |
| 1090 | guess = (high + low) >> 1; |
| 1091 | if (lines[mColumns * guess + TOP] > vertical){ |
| 1092 | high = guess; |
| 1093 | } else { |
| 1094 | low = guess; |
| 1095 | } |
| 1096 | } |
| 1097 | if (low < 0) { |
| 1098 | return 0; |
| 1099 | } else { |
| 1100 | return low; |
| 1101 | } |
| 1102 | } |
| 1103 | |
| 1104 | public int getLineCount() { |
| 1105 | return mLineCount; |
| 1106 | } |
| 1107 | |
| 1108 | public int getLineTop(int line) { |
| 1109 | return mLines[mColumns * line + TOP]; |
| 1110 | } |
| 1111 | |
| 1112 | public int getLineDescent(int line) { |
| 1113 | return mLines[mColumns * line + DESCENT]; |
| 1114 | } |
| 1115 | |
| 1116 | public int getLineStart(int line) { |
| 1117 | return mLines[mColumns * line + START] & START_MASK; |
| 1118 | } |
| 1119 | |
| 1120 | public int getParagraphDirection(int line) { |
| 1121 | return mLines[mColumns * line + DIR] >> DIR_SHIFT; |
| 1122 | } |
| 1123 | |
| 1124 | public boolean getLineContainsTab(int line) { |
| 1125 | return (mLines[mColumns * line + TAB] & TAB_MASK) != 0; |
| 1126 | } |
| 1127 | |
| 1128 | public final Directions getLineDirections(int line) { |
| 1129 | return mLineDirections[line]; |
| 1130 | } |
| 1131 | |
| 1132 | public int getTopPadding() { |
| 1133 | return mTopPadding; |
| 1134 | } |
| 1135 | |
| 1136 | public int getBottomPadding() { |
| 1137 | return mBottomPadding; |
| 1138 | } |
| 1139 | |
| 1140 | @Override |
| 1141 | public int getEllipsisCount(int line) { |
| 1142 | if (mColumns < COLUMNS_ELLIPSIZE) { |
| 1143 | return 0; |
| 1144 | } |
| 1145 | |
| 1146 | return mLines[mColumns * line + ELLIPSIS_COUNT]; |
| 1147 | } |
| 1148 | |
| 1149 | @Override |
| 1150 | public int getEllipsisStart(int line) { |
| 1151 | if (mColumns < COLUMNS_ELLIPSIZE) { |
| 1152 | return 0; |
| 1153 | } |
| 1154 | |
| 1155 | return mLines[mColumns * line + ELLIPSIS_START]; |
| 1156 | } |
| 1157 | |
| 1158 | @Override |
| 1159 | public int getEllipsizedWidth() { |
| 1160 | return mEllipsizedWidth; |
| 1161 | } |
| 1162 | |
| 1163 | private int mLineCount; |
| 1164 | private int mTopPadding, mBottomPadding; |
| 1165 | private int mColumns; |
| 1166 | private int mEllipsizedWidth; |
| 1167 | |
| 1168 | private static final int COLUMNS_NORMAL = 3; |
| 1169 | private static final int COLUMNS_ELLIPSIZE = 5; |
| 1170 | private static final int START = 0; |
| 1171 | private static final int DIR = START; |
| 1172 | private static final int TAB = START; |
| 1173 | private static final int TOP = 1; |
| 1174 | private static final int DESCENT = 2; |
| 1175 | private static final int ELLIPSIS_START = 3; |
| 1176 | private static final int ELLIPSIS_COUNT = 4; |
| 1177 | |
| 1178 | private int[] mLines; |
| 1179 | private Directions[] mLineDirections; |
| 1180 | |
| 1181 | private static final int START_MASK = 0x1FFFFFFF; |
| 1182 | private static final int DIR_MASK = 0xC0000000; |
| 1183 | private static final int DIR_SHIFT = 30; |
| 1184 | private static final int TAB_MASK = 0x20000000; |
| 1185 | |
| 1186 | private static final char FIRST_RIGHT_TO_LEFT = '\u0590'; |
| 1187 | |
| 1188 | /* |
| 1189 | * These are reused across calls to generate() |
| 1190 | */ |
| 1191 | private byte[] mChdirs; |
| 1192 | private char[] mChs; |
| 1193 | private float[] mWidths; |
| 1194 | private Paint.FontMetricsInt mFontMetricsInt = new Paint.FontMetricsInt(); |
| 1195 | } |