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 android.text.style.UpdateLayout; |
| 21 | import android.text.style.WrapTogetherSpan; |
| 22 | |
| 23 | import java.lang.ref.WeakReference; |
| 24 | |
| 25 | /** |
| 26 | * DynamicLayout is a text layout that updates itself as the text is edited. |
| 27 | * <p>This is used by widgets to control text layout. You should not need |
| 28 | * to use this class directly unless you are implementing your own widget |
| 29 | * or custom display object, or need to call |
| 30 | * {@link android.graphics.Canvas#drawText(java.lang.CharSequence, int, int, float, float, android.graphics.Paint) |
| 31 | * Canvas.drawText()} directly.</p> |
| 32 | */ |
| 33 | public class DynamicLayout |
| 34 | extends Layout |
| 35 | { |
| 36 | private static final int PRIORITY = 128; |
| 37 | |
| 38 | /** |
| 39 | * Make a layout for the specified text that will be updated as |
| 40 | * the text is changed. |
| 41 | */ |
| 42 | public DynamicLayout(CharSequence base, |
| 43 | TextPaint paint, |
| 44 | int width, Alignment align, |
| 45 | float spacingmult, float spacingadd, |
| 46 | boolean includepad) { |
| 47 | this(base, base, paint, width, align, spacingmult, spacingadd, |
| 48 | includepad); |
| 49 | } |
| 50 | |
| 51 | /** |
| 52 | * Make a layout for the transformed text (password transformation |
| 53 | * being the primary example of a transformation) |
| 54 | * that will be updated as the base text is changed. |
| 55 | */ |
| 56 | public DynamicLayout(CharSequence base, CharSequence display, |
| 57 | TextPaint paint, |
| 58 | int width, Alignment align, |
| 59 | float spacingmult, float spacingadd, |
| 60 | boolean includepad) { |
| 61 | this(base, display, paint, width, align, spacingmult, spacingadd, |
| 62 | includepad, null, 0); |
| 63 | } |
| 64 | |
| 65 | /** |
| 66 | * Make a layout for the transformed text (password transformation |
| 67 | * being the primary example of a transformation) |
| 68 | * that will be updated as the base text is changed. |
| 69 | * If ellipsize is non-null, the Layout will ellipsize the text |
| 70 | * down to ellipsizedWidth. |
| 71 | */ |
| 72 | public DynamicLayout(CharSequence base, CharSequence display, |
| 73 | TextPaint paint, |
| 74 | int width, Alignment align, |
| 75 | float spacingmult, float spacingadd, |
| 76 | boolean includepad, |
| 77 | TextUtils.TruncateAt ellipsize, int ellipsizedWidth) { |
Doug Felt | cb379120 | 2011-07-07 11:57:48 -0700 | [diff] [blame] | 78 | this(base, display, paint, width, align, TextDirectionHeuristics.FIRSTSTRONG_LTR, |
| 79 | spacingmult, spacingadd, includepad, ellipsize, ellipsizedWidth); |
| 80 | } |
| 81 | |
| 82 | /** |
| 83 | * Make a layout for the transformed text (password transformation |
| 84 | * being the primary example of a transformation) |
| 85 | * that will be updated as the base text is changed. |
| 86 | * If ellipsize is non-null, the Layout will ellipsize the text |
| 87 | * down to ellipsizedWidth. |
| 88 | * * |
| 89 | * *@hide |
| 90 | */ |
| 91 | public DynamicLayout(CharSequence base, CharSequence display, |
| 92 | TextPaint paint, |
| 93 | int width, Alignment align, TextDirectionHeuristic textDir, |
| 94 | float spacingmult, float spacingadd, |
| 95 | boolean includepad, |
| 96 | TextUtils.TruncateAt ellipsize, int ellipsizedWidth) { |
| 97 | super((ellipsize == null) |
| 98 | ? display |
| 99 | : (display instanceof Spanned) |
| 100 | ? new SpannedEllipsizer(display) |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 101 | : new Ellipsizer(display), |
Doug Felt | cb379120 | 2011-07-07 11:57:48 -0700 | [diff] [blame] | 102 | paint, width, align, textDir, spacingmult, spacingadd); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 103 | |
| 104 | mBase = base; |
| 105 | mDisplay = display; |
| 106 | |
| 107 | if (ellipsize != null) { |
| 108 | mInts = new PackedIntVector(COLUMNS_ELLIPSIZE); |
| 109 | mEllipsizedWidth = ellipsizedWidth; |
| 110 | mEllipsizeAt = ellipsize; |
| 111 | } else { |
| 112 | mInts = new PackedIntVector(COLUMNS_NORMAL); |
| 113 | mEllipsizedWidth = width; |
Gilles Debunne | 0a4db3c | 2011-01-14 12:12:04 -0800 | [diff] [blame] | 114 | mEllipsizeAt = null; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 115 | } |
| 116 | |
| 117 | mObjects = new PackedObjectVector<Directions>(1); |
| 118 | |
| 119 | mIncludePad = includepad; |
| 120 | |
| 121 | /* |
| 122 | * This is annoying, but we can't refer to the layout until |
| 123 | * superclass construction is finished, and the superclass |
| 124 | * constructor wants the reference to the display text. |
| 125 | * |
| 126 | * This will break if the superclass constructor ever actually |
| 127 | * cares about the content instead of just holding the reference. |
| 128 | */ |
| 129 | if (ellipsize != null) { |
| 130 | Ellipsizer e = (Ellipsizer) getText(); |
| 131 | |
| 132 | e.mLayout = this; |
| 133 | e.mWidth = ellipsizedWidth; |
| 134 | e.mMethod = ellipsize; |
| 135 | mEllipsize = true; |
| 136 | } |
| 137 | |
| 138 | // Initial state is a single line with 0 characters (0 to 0), |
| 139 | // with top at 0 and bottom at whatever is natural, and |
| 140 | // undefined ellipsis. |
| 141 | |
| 142 | int[] start; |
| 143 | |
| 144 | if (ellipsize != null) { |
| 145 | start = new int[COLUMNS_ELLIPSIZE]; |
| 146 | start[ELLIPSIS_START] = ELLIPSIS_UNDEFINED; |
| 147 | } else { |
| 148 | start = new int[COLUMNS_NORMAL]; |
| 149 | } |
| 150 | |
| 151 | Directions[] dirs = new Directions[] { DIRS_ALL_LEFT_TO_RIGHT }; |
| 152 | |
| 153 | Paint.FontMetricsInt fm = paint.getFontMetricsInt(); |
| 154 | int asc = fm.ascent; |
| 155 | int desc = fm.descent; |
| 156 | |
| 157 | start[DIR] = DIR_LEFT_TO_RIGHT << DIR_SHIFT; |
| 158 | start[TOP] = 0; |
| 159 | start[DESCENT] = desc; |
| 160 | mInts.insertAt(0, start); |
| 161 | |
| 162 | start[TOP] = desc - asc; |
| 163 | mInts.insertAt(1, start); |
| 164 | |
| 165 | mObjects.insertAt(0, dirs); |
| 166 | |
| 167 | // Update from 0 characters to whatever the real text is |
| 168 | |
| 169 | reflow(base, 0, 0, base.length()); |
| 170 | |
| 171 | if (base instanceof Spannable) { |
| 172 | if (mWatcher == null) |
| 173 | mWatcher = new ChangeWatcher(this); |
| 174 | |
| 175 | // Strip out any watchers for other DynamicLayouts. |
| 176 | Spannable sp = (Spannable) base; |
| 177 | ChangeWatcher[] spans = sp.getSpans(0, sp.length(), ChangeWatcher.class); |
| 178 | for (int i = 0; i < spans.length; i++) |
| 179 | sp.removeSpan(spans[i]); |
| 180 | |
| 181 | sp.setSpan(mWatcher, 0, base.length(), |
| 182 | Spannable.SPAN_INCLUSIVE_INCLUSIVE | |
| 183 | (PRIORITY << Spannable.SPAN_PRIORITY_SHIFT)); |
| 184 | } |
| 185 | } |
| 186 | |
| 187 | private void reflow(CharSequence s, int where, int before, int after) { |
| 188 | if (s != mBase) |
| 189 | return; |
| 190 | |
| 191 | CharSequence text = mDisplay; |
| 192 | int len = text.length(); |
| 193 | |
| 194 | // seek back to the start of the paragraph |
| 195 | |
| 196 | int find = TextUtils.lastIndexOf(text, '\n', where - 1); |
| 197 | if (find < 0) |
| 198 | find = 0; |
| 199 | else |
| 200 | find = find + 1; |
| 201 | |
| 202 | { |
| 203 | int diff = where - find; |
| 204 | before += diff; |
| 205 | after += diff; |
| 206 | where -= diff; |
| 207 | } |
| 208 | |
| 209 | // seek forward to the end of the paragraph |
| 210 | |
| 211 | int look = TextUtils.indexOf(text, '\n', where + after); |
| 212 | if (look < 0) |
| 213 | look = len; |
| 214 | else |
| 215 | look++; // we want the index after the \n |
| 216 | |
| 217 | int change = look - (where + after); |
| 218 | before += change; |
| 219 | after += change; |
| 220 | |
| 221 | // seek further out to cover anything that is forced to wrap together |
| 222 | |
| 223 | if (text instanceof Spanned) { |
| 224 | Spanned sp = (Spanned) text; |
| 225 | boolean again; |
| 226 | |
| 227 | do { |
| 228 | again = false; |
| 229 | |
| 230 | Object[] force = sp.getSpans(where, where + after, |
| 231 | WrapTogetherSpan.class); |
| 232 | |
| 233 | for (int i = 0; i < force.length; i++) { |
| 234 | int st = sp.getSpanStart(force[i]); |
| 235 | int en = sp.getSpanEnd(force[i]); |
| 236 | |
| 237 | if (st < where) { |
| 238 | again = true; |
| 239 | |
| 240 | int diff = where - st; |
| 241 | before += diff; |
| 242 | after += diff; |
| 243 | where -= diff; |
| 244 | } |
| 245 | |
| 246 | if (en > where + after) { |
| 247 | again = true; |
| 248 | |
| 249 | int diff = en - (where + after); |
| 250 | before += diff; |
| 251 | after += diff; |
| 252 | } |
| 253 | } |
| 254 | } while (again); |
| 255 | } |
| 256 | |
| 257 | // find affected region of old layout |
| 258 | |
| 259 | int startline = getLineForOffset(where); |
| 260 | int startv = getLineTop(startline); |
| 261 | |
| 262 | int endline = getLineForOffset(where + before); |
| 263 | if (where + after == len) |
| 264 | endline = getLineCount(); |
| 265 | int endv = getLineTop(endline); |
| 266 | boolean islast = (endline == getLineCount()); |
| 267 | |
| 268 | // generate new layout for affected text |
| 269 | |
| 270 | StaticLayout reflowed; |
Amith Yamasani | b724c34 | 2011-08-13 07:43:07 -0700 | [diff] [blame] | 271 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 272 | synchronized (sLock) { |
Amith Yamasani | b724c34 | 2011-08-13 07:43:07 -0700 | [diff] [blame] | 273 | reflowed = sStaticLayout; |
| 274 | sStaticLayout = null; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 275 | } |
| 276 | |
Romain Guy | e5ea440 | 2011-08-01 14:01:37 -0700 | [diff] [blame] | 277 | if (reflowed == null) { |
Fabrice Di Meglio | 0917573 | 2011-09-25 16:48:04 -0700 | [diff] [blame^] | 278 | reflowed = new StaticLayout(null); |
Romain Guy | e5ea440 | 2011-08-01 14:01:37 -0700 | [diff] [blame] | 279 | } else { |
| 280 | reflowed.prepare(); |
| 281 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 282 | |
| 283 | reflowed.generate(text, where, where + after, |
Doug Felt | cb379120 | 2011-07-07 11:57:48 -0700 | [diff] [blame] | 284 | getPaint(), getWidth(), getAlignment(), getTextDirectionHeuristic(), |
Gilles Debunne | 0a4db3c | 2011-01-14 12:12:04 -0800 | [diff] [blame] | 285 | getSpacingMultiplier(), getSpacingAdd(), |
| 286 | false, true, mEllipsizedWidth, mEllipsizeAt); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 287 | int n = reflowed.getLineCount(); |
| 288 | |
| 289 | // If the new layout has a blank line at the end, but it is not |
| 290 | // the very end of the buffer, then we already have a line that |
| 291 | // starts there, so disregard the blank line. |
| 292 | |
| 293 | if (where + after != len && |
| 294 | reflowed.getLineStart(n - 1) == where + after) |
| 295 | n--; |
| 296 | |
| 297 | // remove affected lines from old layout |
| 298 | |
| 299 | mInts.deleteAt(startline, endline - startline); |
| 300 | mObjects.deleteAt(startline, endline - startline); |
| 301 | |
| 302 | // adjust offsets in layout for new height and offsets |
| 303 | |
| 304 | int ht = reflowed.getLineTop(n); |
| 305 | int toppad = 0, botpad = 0; |
| 306 | |
| 307 | if (mIncludePad && startline == 0) { |
| 308 | toppad = reflowed.getTopPadding(); |
| 309 | mTopPadding = toppad; |
| 310 | ht -= toppad; |
| 311 | } |
| 312 | if (mIncludePad && islast) { |
| 313 | botpad = reflowed.getBottomPadding(); |
| 314 | mBottomPadding = botpad; |
| 315 | ht += botpad; |
| 316 | } |
| 317 | |
| 318 | mInts.adjustValuesBelow(startline, START, after - before); |
| 319 | mInts.adjustValuesBelow(startline, TOP, startv - endv + ht); |
| 320 | |
| 321 | // insert new layout |
| 322 | |
| 323 | int[] ints; |
| 324 | |
| 325 | if (mEllipsize) { |
| 326 | ints = new int[COLUMNS_ELLIPSIZE]; |
| 327 | ints[ELLIPSIS_START] = ELLIPSIS_UNDEFINED; |
| 328 | } else { |
| 329 | ints = new int[COLUMNS_NORMAL]; |
| 330 | } |
| 331 | |
| 332 | Directions[] objects = new Directions[1]; |
| 333 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 334 | for (int i = 0; i < n; i++) { |
| 335 | ints[START] = reflowed.getLineStart(i) | |
| 336 | (reflowed.getParagraphDirection(i) << DIR_SHIFT) | |
| 337 | (reflowed.getLineContainsTab(i) ? TAB_MASK : 0); |
| 338 | |
| 339 | int top = reflowed.getLineTop(i) + startv; |
| 340 | if (i > 0) |
| 341 | top -= toppad; |
| 342 | ints[TOP] = top; |
| 343 | |
| 344 | int desc = reflowed.getLineDescent(i); |
| 345 | if (i == n - 1) |
| 346 | desc += botpad; |
| 347 | |
| 348 | ints[DESCENT] = desc; |
| 349 | objects[0] = reflowed.getLineDirections(i); |
| 350 | |
| 351 | if (mEllipsize) { |
| 352 | ints[ELLIPSIS_START] = reflowed.getEllipsisStart(i); |
| 353 | ints[ELLIPSIS_COUNT] = reflowed.getEllipsisCount(i); |
| 354 | } |
| 355 | |
| 356 | mInts.insertAt(startline + i, ints); |
| 357 | mObjects.insertAt(startline + i, objects); |
| 358 | } |
| 359 | |
| 360 | synchronized (sLock) { |
Amith Yamasani | b724c34 | 2011-08-13 07:43:07 -0700 | [diff] [blame] | 361 | sStaticLayout = reflowed; |
Romain Guy | e5ea440 | 2011-08-01 14:01:37 -0700 | [diff] [blame] | 362 | reflowed.finish(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 363 | } |
| 364 | } |
| 365 | |
Gilles Debunne | d6e568c | 2011-01-25 10:14:43 -0800 | [diff] [blame] | 366 | @Override |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 367 | public int getLineCount() { |
| 368 | return mInts.size() - 1; |
| 369 | } |
| 370 | |
Gilles Debunne | d6e568c | 2011-01-25 10:14:43 -0800 | [diff] [blame] | 371 | @Override |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 372 | public int getLineTop(int line) { |
| 373 | return mInts.getValue(line, TOP); |
| 374 | } |
| 375 | |
Gilles Debunne | d6e568c | 2011-01-25 10:14:43 -0800 | [diff] [blame] | 376 | @Override |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 377 | public int getLineDescent(int line) { |
| 378 | return mInts.getValue(line, DESCENT); |
| 379 | } |
| 380 | |
Gilles Debunne | d6e568c | 2011-01-25 10:14:43 -0800 | [diff] [blame] | 381 | @Override |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 382 | public int getLineStart(int line) { |
| 383 | return mInts.getValue(line, START) & START_MASK; |
| 384 | } |
| 385 | |
Gilles Debunne | d6e568c | 2011-01-25 10:14:43 -0800 | [diff] [blame] | 386 | @Override |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 387 | public boolean getLineContainsTab(int line) { |
| 388 | return (mInts.getValue(line, TAB) & TAB_MASK) != 0; |
| 389 | } |
| 390 | |
Gilles Debunne | d6e568c | 2011-01-25 10:14:43 -0800 | [diff] [blame] | 391 | @Override |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 392 | public int getParagraphDirection(int line) { |
| 393 | return mInts.getValue(line, DIR) >> DIR_SHIFT; |
| 394 | } |
| 395 | |
Gilles Debunne | d6e568c | 2011-01-25 10:14:43 -0800 | [diff] [blame] | 396 | @Override |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 397 | public final Directions getLineDirections(int line) { |
| 398 | return mObjects.getValue(line, 0); |
| 399 | } |
| 400 | |
Gilles Debunne | d6e568c | 2011-01-25 10:14:43 -0800 | [diff] [blame] | 401 | @Override |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 402 | public int getTopPadding() { |
| 403 | return mTopPadding; |
| 404 | } |
| 405 | |
Gilles Debunne | d6e568c | 2011-01-25 10:14:43 -0800 | [diff] [blame] | 406 | @Override |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 407 | public int getBottomPadding() { |
| 408 | return mBottomPadding; |
| 409 | } |
| 410 | |
| 411 | @Override |
| 412 | public int getEllipsizedWidth() { |
| 413 | return mEllipsizedWidth; |
| 414 | } |
| 415 | |
Gilles Debunne | 0a4db3c | 2011-01-14 12:12:04 -0800 | [diff] [blame] | 416 | private static class ChangeWatcher implements TextWatcher, SpanWatcher { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 417 | public ChangeWatcher(DynamicLayout layout) { |
Gilles Debunne | d6e568c | 2011-01-25 10:14:43 -0800 | [diff] [blame] | 418 | mLayout = new WeakReference<DynamicLayout>(layout); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 419 | } |
| 420 | |
| 421 | private void reflow(CharSequence s, int where, int before, int after) { |
Gilles Debunne | d6e568c | 2011-01-25 10:14:43 -0800 | [diff] [blame] | 422 | DynamicLayout ml = mLayout.get(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 423 | |
| 424 | if (ml != null) |
| 425 | ml.reflow(s, where, before, after); |
| 426 | else if (s instanceof Spannable) |
| 427 | ((Spannable) s).removeSpan(this); |
| 428 | } |
| 429 | |
Gilles Debunne | 0a4db3c | 2011-01-14 12:12:04 -0800 | [diff] [blame] | 430 | public void beforeTextChanged(CharSequence s, int where, int before, int after) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 431 | } |
| 432 | |
Gilles Debunne | 0a4db3c | 2011-01-14 12:12:04 -0800 | [diff] [blame] | 433 | public void onTextChanged(CharSequence s, int where, int before, int after) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 434 | reflow(s, where, before, after); |
| 435 | } |
| 436 | |
| 437 | public void afterTextChanged(Editable s) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 438 | } |
| 439 | |
| 440 | public void onSpanAdded(Spannable s, Object o, int start, int end) { |
| 441 | if (o instanceof UpdateLayout) |
| 442 | reflow(s, start, end - start, end - start); |
| 443 | } |
| 444 | |
| 445 | public void onSpanRemoved(Spannable s, Object o, int start, int end) { |
| 446 | if (o instanceof UpdateLayout) |
| 447 | reflow(s, start, end - start, end - start); |
| 448 | } |
| 449 | |
Gilles Debunne | 0a4db3c | 2011-01-14 12:12:04 -0800 | [diff] [blame] | 450 | public void onSpanChanged(Spannable s, Object o, int start, int end, int nstart, int nend) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 451 | if (o instanceof UpdateLayout) { |
| 452 | reflow(s, start, end - start, end - start); |
| 453 | reflow(s, nstart, nend - nstart, nend - nstart); |
| 454 | } |
| 455 | } |
| 456 | |
Gilles Debunne | d6e568c | 2011-01-25 10:14:43 -0800 | [diff] [blame] | 457 | private WeakReference<DynamicLayout> mLayout; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 458 | } |
| 459 | |
Gilles Debunne | d6e568c | 2011-01-25 10:14:43 -0800 | [diff] [blame] | 460 | @Override |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 461 | public int getEllipsisStart(int line) { |
| 462 | if (mEllipsizeAt == null) { |
| 463 | return 0; |
| 464 | } |
| 465 | |
| 466 | return mInts.getValue(line, ELLIPSIS_START); |
| 467 | } |
| 468 | |
Gilles Debunne | d6e568c | 2011-01-25 10:14:43 -0800 | [diff] [blame] | 469 | @Override |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 470 | public int getEllipsisCount(int line) { |
| 471 | if (mEllipsizeAt == null) { |
| 472 | return 0; |
| 473 | } |
| 474 | |
| 475 | return mInts.getValue(line, ELLIPSIS_COUNT); |
| 476 | } |
| 477 | |
| 478 | private CharSequence mBase; |
| 479 | private CharSequence mDisplay; |
| 480 | private ChangeWatcher mWatcher; |
| 481 | private boolean mIncludePad; |
| 482 | private boolean mEllipsize; |
| 483 | private int mEllipsizedWidth; |
| 484 | private TextUtils.TruncateAt mEllipsizeAt; |
| 485 | |
| 486 | private PackedIntVector mInts; |
| 487 | private PackedObjectVector<Directions> mObjects; |
| 488 | |
| 489 | private int mTopPadding, mBottomPadding; |
| 490 | |
Fabrice Di Meglio | 0917573 | 2011-09-25 16:48:04 -0700 | [diff] [blame^] | 491 | private static StaticLayout sStaticLayout = new StaticLayout(null); |
Fabrice Di Meglio | 8059e090 | 2011-08-10 16:31:58 -0700 | [diff] [blame] | 492 | |
Romain Guy | e5ea440 | 2011-08-01 14:01:37 -0700 | [diff] [blame] | 493 | private static final Object[] sLock = new Object[0]; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 494 | |
| 495 | private static final int START = 0; |
| 496 | private static final int DIR = START; |
| 497 | private static final int TAB = START; |
| 498 | private static final int TOP = 1; |
| 499 | private static final int DESCENT = 2; |
| 500 | private static final int COLUMNS_NORMAL = 3; |
| 501 | |
| 502 | private static final int ELLIPSIS_START = 3; |
| 503 | private static final int ELLIPSIS_COUNT = 4; |
| 504 | private static final int COLUMNS_ELLIPSIZE = 5; |
| 505 | |
| 506 | private static final int START_MASK = 0x1FFFFFFF; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 507 | private static final int DIR_SHIFT = 30; |
| 508 | private static final int TAB_MASK = 0x20000000; |
| 509 | |
| 510 | private static final int ELLIPSIS_UNDEFINED = 0x80000000; |
| 511 | } |