19066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/* 29066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Copyright (C) 2006 The Android Open Source Project 39066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 49066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 59066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * you may not use this file except in compliance with the License. 69066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * You may obtain a copy of the License at 79066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 89066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 99066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * See the License for the specific language governing permissions and 149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * limitations under the License. 159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpackage android.text; 189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.graphics.Paint; 209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.text.style.UpdateLayout; 219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.text.style.WrapTogetherSpan; 229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunneimport com.android.internal.util.ArrayUtils; 24776abc24cdd18610232a50b997cce3cffa74609bAdam Lesinskiimport com.android.internal.util.GrowingArrayUtils; 2533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport java.lang.ref.WeakReference; 279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/** 299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * DynamicLayout is a text layout that updates itself as the text is edited. 309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>This is used by widgets to control text layout. You should not need 319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to use this class directly unless you are implementing your own widget 329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * or custom display object, or need to call 339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.graphics.Canvas#drawText(java.lang.CharSequence, int, int, float, float, android.graphics.Paint) 349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Canvas.drawText()} directly.</p> 359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunnepublic class DynamicLayout extends Layout 379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project{ 389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int PRIORITY = 128; 3971afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne private static final int BLOCK_MINIMUM_CHARACTER_LENGTH = 400; 409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Make a layout for the specified text that will be updated as 439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the text is changed. 449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public DynamicLayout(CharSequence base, 469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project TextPaint paint, 479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int width, Alignment align, 489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float spacingmult, float spacingadd, 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean includepad) { 509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project this(base, base, paint, width, align, spacingmult, spacingadd, 519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project includepad); 529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Make a layout for the transformed text (password transformation 569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * being the primary example of a transformation) 579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * that will be updated as the base text is changed. 589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public DynamicLayout(CharSequence base, CharSequence display, 609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project TextPaint paint, 619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int width, Alignment align, 629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float spacingmult, float spacingadd, 639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean includepad) { 649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project this(base, display, paint, width, align, spacingmult, spacingadd, 659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project includepad, null, 0); 669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Make a layout for the transformed text (password transformation 709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * being the primary example of a transformation) 719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * that will be updated as the base text is changed. 729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * If ellipsize is non-null, the Layout will ellipsize the text 739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * down to ellipsizedWidth. 749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public DynamicLayout(CharSequence base, CharSequence display, 769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project TextPaint paint, 779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int width, Alignment align, 789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float spacingmult, float spacingadd, 799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean includepad, 809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project TextUtils.TruncateAt ellipsize, int ellipsizedWidth) { 81cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt this(base, display, paint, width, align, TextDirectionHeuristics.FIRSTSTRONG_LTR, 8295c7a13f2ac4f31ed3aaec9b47b9a29a3dbca978Roozbeh Pournader spacingmult, spacingadd, includepad, 8395c7a13f2ac4f31ed3aaec9b47b9a29a3dbca978Roozbeh Pournader StaticLayout.BREAK_STRATEGY_SIMPLE, StaticLayout.HYPHENATION_FREQUENCY_NONE, 8439b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien ellipsize, ellipsizedWidth); 85cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt } 86cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt 87cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt /** 88cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt * Make a layout for the transformed text (password transformation 89cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt * being the primary example of a transformation) 90cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt * that will be updated as the base text is changed. 91cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt * If ellipsize is non-null, the Layout will ellipsize the text 92cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt * down to ellipsizedWidth. 93cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt * * 94cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt * *@hide 95cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt */ 96cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt public DynamicLayout(CharSequence base, CharSequence display, 97cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt TextPaint paint, 98cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt int width, Alignment align, TextDirectionHeuristic textDir, 99cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt float spacingmult, float spacingadd, 10095c7a13f2ac4f31ed3aaec9b47b9a29a3dbca978Roozbeh Pournader boolean includepad, int breakStrategy, int hyphenationFrequency, 101ad0b051b133baf92f199c96a8ac1e81b3393190cFabrice Di Meglio TextUtils.TruncateAt ellipsize, int ellipsizedWidth) { 102cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt super((ellipsize == null) 103cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt ? display 104cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt : (display instanceof Spanned) 105cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt ? new SpannedEllipsizer(display) 1069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project : new Ellipsizer(display), 107cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt paint, width, align, textDir, spacingmult, spacingadd); 1089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBase = base; 1109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mDisplay = display; 1119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (ellipsize != null) { 1139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mInts = new PackedIntVector(COLUMNS_ELLIPSIZE); 1149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mEllipsizedWidth = ellipsizedWidth; 1159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mEllipsizeAt = ellipsize; 1169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 1179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mInts = new PackedIntVector(COLUMNS_NORMAL); 1189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mEllipsizedWidth = width; 1190a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne mEllipsizeAt = null; 1209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mObjects = new PackedObjectVector<Directions>(1); 1239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mIncludePad = includepad; 12539b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien mBreakStrategy = breakStrategy; 12695c7a13f2ac4f31ed3aaec9b47b9a29a3dbca978Roozbeh Pournader mHyphenationFrequency = hyphenationFrequency; 1279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 1299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This is annoying, but we can't refer to the layout until 1309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * superclass construction is finished, and the superclass 1319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * constructor wants the reference to the display text. 1329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 1339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This will break if the superclass constructor ever actually 1349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * cares about the content instead of just holding the reference. 1359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (ellipsize != null) { 1379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Ellipsizer e = (Ellipsizer) getText(); 1389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project e.mLayout = this; 1409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project e.mWidth = ellipsizedWidth; 1419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project e.mMethod = ellipsize; 1429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mEllipsize = true; 1439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Initial state is a single line with 0 characters (0 to 0), 1469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // with top at 0 and bottom at whatever is natural, and 1479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // undefined ellipsis. 1489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int[] start; 1509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (ellipsize != null) { 1529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project start = new int[COLUMNS_ELLIPSIZE]; 1539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project start[ELLIPSIS_START] = ELLIPSIS_UNDEFINED; 1549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 1559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project start = new int[COLUMNS_NORMAL]; 1569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Directions[] dirs = new Directions[] { DIRS_ALL_LEFT_TO_RIGHT }; 1599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Paint.FontMetricsInt fm = paint.getFontMetricsInt(); 1619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int asc = fm.ascent; 1629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int desc = fm.descent; 1639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project start[DIR] = DIR_LEFT_TO_RIGHT << DIR_SHIFT; 1659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project start[TOP] = 0; 1669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project start[DESCENT] = desc; 1679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mInts.insertAt(0, start); 1689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project start[TOP] = desc - asc; 1709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mInts.insertAt(1, start); 1719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mObjects.insertAt(0, dirs); 1739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Update from 0 characters to whatever the real text is 1759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project reflow(base, 0, 0, base.length()); 1769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (base instanceof Spannable) { 1789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mWatcher == null) 1799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mWatcher = new ChangeWatcher(this); 1809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Strip out any watchers for other DynamicLayouts. 1829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Spannable sp = (Spannable) base; 1839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ChangeWatcher[] spans = sp.getSpans(0, sp.length(), ChangeWatcher.class); 1849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < spans.length; i++) 1859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sp.removeSpan(spans[i]); 1869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sp.setSpan(mWatcher, 0, base.length(), 1889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Spannable.SPAN_INCLUSIVE_INCLUSIVE | 1899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (PRIORITY << Spannable.SPAN_PRIORITY_SHIFT)); 1909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void reflow(CharSequence s, int where, int before, int after) { 1949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (s != mBase) 1959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 1969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project CharSequence text = mDisplay; 1989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int len = text.length(); 1999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // seek back to the start of the paragraph 2019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int find = TextUtils.lastIndexOf(text, '\n', where - 1); 2039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (find < 0) 2049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project find = 0; 2059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project else 2069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project find = find + 1; 2079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project { 2099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int diff = where - find; 2109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project before += diff; 2119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project after += diff; 2129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project where -= diff; 2139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // seek forward to the end of the paragraph 2169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int look = TextUtils.indexOf(text, '\n', where + after); 2189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (look < 0) 2199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project look = len; 2209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project else 2219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project look++; // we want the index after the \n 2229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int change = look - (where + after); 2249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project before += change; 2259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project after += change; 2269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // seek further out to cover anything that is forced to wrap together 2289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (text instanceof Spanned) { 2309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Spanned sp = (Spanned) text; 2319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean again; 2329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project do { 2349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project again = false; 2359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Object[] force = sp.getSpans(where, where + after, 2379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project WrapTogetherSpan.class); 2389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < force.length; i++) { 2409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int st = sp.getSpanStart(force[i]); 2419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int en = sp.getSpanEnd(force[i]); 2429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (st < where) { 2449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project again = true; 2459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int diff = where - st; 2479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project before += diff; 2489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project after += diff; 2499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project where -= diff; 2509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (en > where + after) { 2539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project again = true; 2549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int diff = en - (where + after); 2569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project before += diff; 2579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project after += diff; 2589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } while (again); 2619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // find affected region of old layout 2649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int startline = getLineForOffset(where); 2669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int startv = getLineTop(startline); 2679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int endline = getLineForOffset(where + before); 2699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (where + after == len) 2709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project endline = getLineCount(); 2719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int endv = getLineTop(endline); 2729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean islast = (endline == getLineCount()); 2739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // generate new layout for affected text 2759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project StaticLayout reflowed; 277d3ab692d28018825578ff05832644cfad60233fbRaph Levien StaticLayout.Builder b; 278b724c346e19d63d7ff194b2b06c4a1e0f7bc07b7Amith Yamasani 2799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project synchronized (sLock) { 280b724c346e19d63d7ff194b2b06c4a1e0f7bc07b7Amith Yamasani reflowed = sStaticLayout; 281d3ab692d28018825578ff05832644cfad60233fbRaph Levien b = sBuilder; 282b724c346e19d63d7ff194b2b06c4a1e0f7bc07b7Amith Yamasani sStaticLayout = null; 283d3ab692d28018825578ff05832644cfad60233fbRaph Levien sBuilder = null; 2849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 286e5ea4403ce58982522554b7ff23f41e6551923c1Romain Guy if (reflowed == null) { 28709175735c562652be1a1b0dc0f941d36ac4f076aFabrice Di Meglio reflowed = new StaticLayout(null); 288ebd66ca600dc2c43edb0830bcf1a92fafec30a5aRaph Levien b = StaticLayout.Builder.obtain(text, where, where + after, getPaint(), getWidth()); 289d3ab692d28018825578ff05832644cfad60233fbRaph Levien } 290d3ab692d28018825578ff05832644cfad60233fbRaph Levien 291d3ab692d28018825578ff05832644cfad60233fbRaph Levien b.setText(text, where, where + after) 292d3ab692d28018825578ff05832644cfad60233fbRaph Levien .setPaint(getPaint()) 293d3ab692d28018825578ff05832644cfad60233fbRaph Levien .setWidth(getWidth()) 294a6a082862b9e2ea4c9e9a1a945927c4040993f6eRaph Levien .setTextDirection(getTextDirectionHeuristic()) 295531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien .setLineSpacing(getSpacingAdd(), getSpacingMultiplier()) 296d3ab692d28018825578ff05832644cfad60233fbRaph Levien .setEllipsizedWidth(mEllipsizedWidth) 29739b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien .setEllipsize(mEllipsizeAt) 29895c7a13f2ac4f31ed3aaec9b47b9a29a3dbca978Roozbeh Pournader .setBreakStrategy(mBreakStrategy) 29995c7a13f2ac4f31ed3aaec9b47b9a29a3dbca978Roozbeh Pournader .setHyphenationFrequency(mHyphenationFrequency); 300d3ab692d28018825578ff05832644cfad60233fbRaph Levien reflowed.generate(b, false, true); 3019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int n = reflowed.getLineCount(); 3029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // If the new layout has a blank line at the end, but it is not 3049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // the very end of the buffer, then we already have a line that 3059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // starts there, so disregard the blank line. 3069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 30771afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne if (where + after != len && reflowed.getLineStart(n - 1) == where + after) 3089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project n--; 3099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // remove affected lines from old layout 3119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mInts.deleteAt(startline, endline - startline); 3129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mObjects.deleteAt(startline, endline - startline); 3139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // adjust offsets in layout for new height and offsets 3159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int ht = reflowed.getLineTop(n); 3179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int toppad = 0, botpad = 0; 3189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mIncludePad && startline == 0) { 3209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project toppad = reflowed.getTopPadding(); 3219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTopPadding = toppad; 3229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ht -= toppad; 3239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mIncludePad && islast) { 3259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project botpad = reflowed.getBottomPadding(); 3269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBottomPadding = botpad; 3279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ht += botpad; 3289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mInts.adjustValuesBelow(startline, START, after - before); 3319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mInts.adjustValuesBelow(startline, TOP, startv - endv + ht); 3329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // insert new layout 3349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int[] ints; 3369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mEllipsize) { 3389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ints = new int[COLUMNS_ELLIPSIZE]; 3399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ints[ELLIPSIS_START] = ELLIPSIS_UNDEFINED; 3409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 3419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ints = new int[COLUMNS_NORMAL]; 3429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Directions[] objects = new Directions[1]; 3459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < n; i++) { 3479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ints[START] = reflowed.getLineStart(i) | 3489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (reflowed.getParagraphDirection(i) << DIR_SHIFT) | 3499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (reflowed.getLineContainsTab(i) ? TAB_MASK : 0); 3509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int top = reflowed.getLineTop(i) + startv; 3529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (i > 0) 3539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project top -= toppad; 3549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ints[TOP] = top; 3559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int desc = reflowed.getLineDescent(i); 3579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (i == n - 1) 3589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project desc += botpad; 3599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ints[DESCENT] = desc; 3619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project objects[0] = reflowed.getLineDirections(i); 3629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 36326d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien ints[HYPHEN] = reflowed.getHyphen(i); 36426d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien 3659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mEllipsize) { 3669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ints[ELLIPSIS_START] = reflowed.getEllipsisStart(i); 3679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ints[ELLIPSIS_COUNT] = reflowed.getEllipsisCount(i); 3689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mInts.insertAt(startline + i, ints); 3719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mObjects.insertAt(startline + i, objects); 3729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 37471afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne updateBlocks(startline, endline - 1, n); 37571afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne 376d3ab692d28018825578ff05832644cfad60233fbRaph Levien b.finish(); 3779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project synchronized (sLock) { 378b724c346e19d63d7ff194b2b06c4a1e0f7bc07b7Amith Yamasani sStaticLayout = reflowed; 379d3ab692d28018825578ff05832644cfad60233fbRaph Levien sBuilder = b; 3809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 38333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne /** 38471afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne * Create the initial block structure, cutting the text into blocks of at least 38571afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne * BLOCK_MINIMUM_CHARACTER_SIZE characters, aligned on the ends of paragraphs. 38671afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne */ 38771afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne private void createBlocks() { 38871afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne int offset = BLOCK_MINIMUM_CHARACTER_LENGTH; 38971afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne mNumberOfBlocks = 0; 39071afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne final CharSequence text = mDisplay; 39171afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne 39271afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne while (true) { 39371afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne offset = TextUtils.indexOf(text, '\n', offset); 39471afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne if (offset < 0) { 39571afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne addBlockAtOffset(text.length()); 39671afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne break; 39771afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne } else { 39871afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne addBlockAtOffset(offset); 39971afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne offset += BLOCK_MINIMUM_CHARACTER_LENGTH; 40071afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne } 40171afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne } 40271afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne 40371afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne // mBlockIndices and mBlockEndLines should have the same length 40471afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne mBlockIndices = new int[mBlockEndLines.length]; 40571afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne for (int i = 0; i < mBlockEndLines.length; i++) { 40671afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne mBlockIndices[i] = INVALID_BLOCK_INDEX; 40771afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne } 40871afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne } 40971afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne 41071afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne /** 41171afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne * Create a new block, ending at the specified character offset. 41271afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne * A block will actually be created only if has at least one line, i.e. this offset is 41371afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne * not on the end line of the previous block. 41471afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne */ 41571afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne private void addBlockAtOffset(int offset) { 41671afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne final int line = getLineForOffset(offset); 41771afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne 41871afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne if (mBlockEndLines == null) { 41971afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne // Initial creation of the array, no test on previous block ending line 420776abc24cdd18610232a50b997cce3cffa74609bAdam Lesinski mBlockEndLines = ArrayUtils.newUnpaddedIntArray(1); 42171afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne mBlockEndLines[mNumberOfBlocks] = line; 42271afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne mNumberOfBlocks++; 42371afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne return; 42471afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne } 42571afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne 42671afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne final int previousBlockEndLine = mBlockEndLines[mNumberOfBlocks - 1]; 42771afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne if (line > previousBlockEndLine) { 428776abc24cdd18610232a50b997cce3cffa74609bAdam Lesinski mBlockEndLines = GrowingArrayUtils.append(mBlockEndLines, mNumberOfBlocks, line); 42971afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne mNumberOfBlocks++; 43071afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne } 43171afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne } 43271afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne 43371afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne /** 43433b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * This method is called every time the layout is reflowed after an edition. 43533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * It updates the internal block data structure. The text is split in blocks 43633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * of contiguous lines, with at least one block for the entire text. 43733b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * When a range of lines is edited, new blocks (from 0 to 3 depending on the 43833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * overlap structure) will replace the set of overlapping blocks. 43933b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * Blocks are listed in order and are represented by their ending line number. 44033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * An index is associated to each block (which will be used by display lists), 44133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * this class simply invalidates the index of blocks overlapping a modification. 44233b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * 4431e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne * This method is package private and not private so that it can be tested. 4441e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne * 44533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * @param startLine the first line of the range of modified lines 44633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * @param endLine the last line of the range, possibly equal to startLine, lower 44733b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * than getLineCount() 44833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * @param newLineCount the number of lines that will replace the range, possibly 0 4491e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne * 4501e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne * @hide 45133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne */ 4521e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne void updateBlocks(int startLine, int endLine, int newLineCount) { 45371afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne if (mBlockEndLines == null) { 45471afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne createBlocks(); 45571afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne return; 45671afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne } 45771afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne 45833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne int firstBlock = -1; 45933b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne int lastBlock = -1; 46033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne for (int i = 0; i < mNumberOfBlocks; i++) { 461157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne if (mBlockEndLines[i] >= startLine) { 46233b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne firstBlock = i; 46333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne break; 46433b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 46533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 46633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne for (int i = firstBlock; i < mNumberOfBlocks; i++) { 467157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne if (mBlockEndLines[i] >= endLine) { 46833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne lastBlock = i; 46933b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne break; 47033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 47133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 472157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne final int lastBlockEndLine = mBlockEndLines[lastBlock]; 47333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 47433b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne boolean createBlockBefore = startLine > (firstBlock == 0 ? 0 : 475157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne mBlockEndLines[firstBlock - 1] + 1); 47633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne boolean createBlock = newLineCount > 0; 477157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne boolean createBlockAfter = endLine < mBlockEndLines[lastBlock]; 47833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 47933b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne int numAddedBlocks = 0; 48033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne if (createBlockBefore) numAddedBlocks++; 48133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne if (createBlock) numAddedBlocks++; 48233b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne if (createBlockAfter) numAddedBlocks++; 48333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 48433b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne final int numRemovedBlocks = lastBlock - firstBlock + 1; 48533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne final int newNumberOfBlocks = mNumberOfBlocks + numAddedBlocks - numRemovedBlocks; 48633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 48733b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne if (newNumberOfBlocks == 0) { 48833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne // Even when text is empty, there is actually one line and hence one block 489157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne mBlockEndLines[0] = 0; 49033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne mBlockIndices[0] = INVALID_BLOCK_INDEX; 49133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne mNumberOfBlocks = 1; 49233b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne return; 49333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 49433b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 495157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne if (newNumberOfBlocks > mBlockEndLines.length) { 496776abc24cdd18610232a50b997cce3cffa74609bAdam Lesinski int[] blockEndLines = ArrayUtils.newUnpaddedIntArray( 497776abc24cdd18610232a50b997cce3cffa74609bAdam Lesinski Math.max(mBlockEndLines.length * 2, newNumberOfBlocks)); 498776abc24cdd18610232a50b997cce3cffa74609bAdam Lesinski int[] blockIndices = new int[blockEndLines.length]; 499157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne System.arraycopy(mBlockEndLines, 0, blockEndLines, 0, firstBlock); 50033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne System.arraycopy(mBlockIndices, 0, blockIndices, 0, firstBlock); 501157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne System.arraycopy(mBlockEndLines, lastBlock + 1, 502157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne blockEndLines, firstBlock + numAddedBlocks, mNumberOfBlocks - lastBlock - 1); 50333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne System.arraycopy(mBlockIndices, lastBlock + 1, 50433b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne blockIndices, firstBlock + numAddedBlocks, mNumberOfBlocks - lastBlock - 1); 505157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne mBlockEndLines = blockEndLines; 50633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne mBlockIndices = blockIndices; 50733b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } else { 508157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne System.arraycopy(mBlockEndLines, lastBlock + 1, 509157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne mBlockEndLines, firstBlock + numAddedBlocks, mNumberOfBlocks - lastBlock - 1); 51033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne System.arraycopy(mBlockIndices, lastBlock + 1, 51133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne mBlockIndices, firstBlock + numAddedBlocks, mNumberOfBlocks - lastBlock - 1); 51233b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 51333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 51433b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne mNumberOfBlocks = newNumberOfBlocks; 51563b3eb65234c8a8b9224c262442816cc429560efRaph Levien int newFirstChangedBlock; 51633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne final int deltaLines = newLineCount - (endLine - startLine + 1); 517955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee if (deltaLines != 0) { 518955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee // Display list whose index is >= mIndexFirstChangedBlock is valid 519955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee // but it needs to update its drawing location. 52063b3eb65234c8a8b9224c262442816cc429560efRaph Levien newFirstChangedBlock = firstBlock + numAddedBlocks; 52163b3eb65234c8a8b9224c262442816cc429560efRaph Levien for (int i = newFirstChangedBlock; i < mNumberOfBlocks; i++) { 522955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee mBlockEndLines[i] += deltaLines; 523955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee } 524955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee } else { 52563b3eb65234c8a8b9224c262442816cc429560efRaph Levien newFirstChangedBlock = mNumberOfBlocks; 52633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 52763b3eb65234c8a8b9224c262442816cc429560efRaph Levien mIndexFirstChangedBlock = Math.min(mIndexFirstChangedBlock, newFirstChangedBlock); 52833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 52933b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne int blockIndex = firstBlock; 53033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne if (createBlockBefore) { 531157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne mBlockEndLines[blockIndex] = startLine - 1; 53233b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne mBlockIndices[blockIndex] = INVALID_BLOCK_INDEX; 53333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne blockIndex++; 53433b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 53533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 53633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne if (createBlock) { 537157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne mBlockEndLines[blockIndex] = startLine + newLineCount - 1; 53833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne mBlockIndices[blockIndex] = INVALID_BLOCK_INDEX; 53933b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne blockIndex++; 54033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 54133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 54233b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne if (createBlockAfter) { 543157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne mBlockEndLines[blockIndex] = lastBlockEndLine + deltaLines; 54433b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne mBlockIndices[blockIndex] = INVALID_BLOCK_INDEX; 54533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 54633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 54733b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 54833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne /** 5491e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne * This package private method is used for test purposes only 5501e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne * @hide 5511e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne */ 552157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne void setBlocksDataForTest(int[] blockEndLines, int[] blockIndices, int numberOfBlocks) { 553157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne mBlockEndLines = new int[blockEndLines.length]; 5541e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne mBlockIndices = new int[blockIndices.length]; 555157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne System.arraycopy(blockEndLines, 0, mBlockEndLines, 0, blockEndLines.length); 5561e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne System.arraycopy(blockIndices, 0, mBlockIndices, 0, blockIndices.length); 5571e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne mNumberOfBlocks = numberOfBlocks; 5581e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne } 5591e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne 5601e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne /** 56133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * @hide 56233b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne */ 563157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne public int[] getBlockEndLines() { 564157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne return mBlockEndLines; 56533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 56633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 56733b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne /** 56833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * @hide 56933b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne */ 57033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne public int[] getBlockIndices() { 57133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne return mBlockIndices; 57233b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 57333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 57433b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne /** 57533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * @hide 57633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne */ 57733b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne public int getNumberOfBlocks() { 57833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne return mNumberOfBlocks; 57933b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 58033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 581955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee /** 582955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee * @hide 583955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee */ 584955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee public int getIndexFirstChangedBlock() { 585955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee return mIndexFirstChangedBlock; 586955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee } 587955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee 588955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee /** 589955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee * @hide 590955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee */ 591955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee public void setIndexFirstChangedBlock(int i) { 592955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee mIndexFirstChangedBlock = i; 593955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee } 594955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee 595d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 5969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getLineCount() { 5979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mInts.size() - 1; 5989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 600d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 6019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getLineTop(int line) { 6029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mInts.getValue(line, TOP); 6039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 605d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 6069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getLineDescent(int line) { 6079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mInts.getValue(line, DESCENT); 6089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 610d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 6119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getLineStart(int line) { 6129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mInts.getValue(line, START) & START_MASK; 6139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 615d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 6169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean getLineContainsTab(int line) { 6179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (mInts.getValue(line, TAB) & TAB_MASK) != 0; 6189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 620d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 6219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getParagraphDirection(int line) { 6229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mInts.getValue(line, DIR) >> DIR_SHIFT; 6239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 625d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 6269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public final Directions getLineDirections(int line) { 6279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mObjects.getValue(line, 0); 6289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 630d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 6319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getTopPadding() { 6329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mTopPadding; 6339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 635d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 6369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getBottomPadding() { 6379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mBottomPadding; 6389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 64026d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien /** 64126d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien * @hide 64226d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien */ 64326d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien @Override 64426d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien public int getHyphen(int line) { 64526d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien return mInts.getValue(line, HYPHEN); 64626d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien } 64726d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien 6489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 6499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getEllipsizedWidth() { 6509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mEllipsizedWidth; 6519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6530a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne private static class ChangeWatcher implements TextWatcher, SpanWatcher { 6549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public ChangeWatcher(DynamicLayout layout) { 655d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne mLayout = new WeakReference<DynamicLayout>(layout); 6569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void reflow(CharSequence s, int where, int before, int after) { 659d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne DynamicLayout ml = mLayout.get(); 6609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (ml != null) 6629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ml.reflow(s, where, before, after); 6639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project else if (s instanceof Spannable) 6649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ((Spannable) s).removeSpan(this); 6659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6670a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne public void beforeTextChanged(CharSequence s, int where, int before, int after) { 66833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne // Intentionally empty 6699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6710a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne public void onTextChanged(CharSequence s, int where, int before, int after) { 6729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project reflow(s, where, before, after); 6739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void afterTextChanged(Editable s) { 67633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne // Intentionally empty 6779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void onSpanAdded(Spannable s, Object o, int start, int end) { 6809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (o instanceof UpdateLayout) 6819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project reflow(s, start, end - start, end - start); 6829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void onSpanRemoved(Spannable s, Object o, int start, int end) { 6859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (o instanceof UpdateLayout) 6869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project reflow(s, start, end - start, end - start); 6879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6890a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne public void onSpanChanged(Spannable s, Object o, int start, int end, int nstart, int nend) { 6909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (o instanceof UpdateLayout) { 6919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project reflow(s, start, end - start, end - start); 6929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project reflow(s, nstart, nend - nstart, nend - nstart); 6939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 696d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne private WeakReference<DynamicLayout> mLayout; 6979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 699d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 7009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getEllipsisStart(int line) { 7019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mEllipsizeAt == null) { 7029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 7039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mInts.getValue(line, ELLIPSIS_START); 7069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 708d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 7099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getEllipsisCount(int line) { 7109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mEllipsizeAt == null) { 7119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 7129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mInts.getValue(line, ELLIPSIS_COUNT); 7159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private CharSequence mBase; 7189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private CharSequence mDisplay; 7199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private ChangeWatcher mWatcher; 7209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mIncludePad; 7219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mEllipsize; 7229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mEllipsizedWidth; 7239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private TextUtils.TruncateAt mEllipsizeAt; 72439b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien private int mBreakStrategy; 72595c7a13f2ac4f31ed3aaec9b47b9a29a3dbca978Roozbeh Pournader private int mHyphenationFrequency; 7269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private PackedIntVector mInts; 7289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private PackedObjectVector<Directions> mObjects; 7299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 730cde6adf45c90ad3fdc94446ede6a228ce264c886Romain Guy /** 73133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * Value used in mBlockIndices when a block has been created or recycled and indicating that its 73233b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * display list needs to be re-created. 73333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * @hide 73433b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne */ 73533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne public static final int INVALID_BLOCK_INDEX = -1; 736157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne // Stores the line numbers of the last line of each block (inclusive) 737157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne private int[] mBlockEndLines; 73833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne // The indices of this block's display list in TextView's internal display list array or 73933b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne // INVALID_BLOCK_INDEX if this block has been invalidated during an edition 74033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne private int[] mBlockIndices; 74133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne // Number of items actually currently being used in the above 2 arrays 74233b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne private int mNumberOfBlocks; 743955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee // The first index of the blocks whose locations are changed 744955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee private int mIndexFirstChangedBlock; 74533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 7469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mTopPadding, mBottomPadding; 7479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 748d3ab692d28018825578ff05832644cfad60233fbRaph Levien private static StaticLayout sStaticLayout = null; 749d3ab692d28018825578ff05832644cfad60233fbRaph Levien private static StaticLayout.Builder sBuilder = null; 7508059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio 751e5ea4403ce58982522554b7ff23f41e6551923c1Romain Guy private static final Object[] sLock = new Object[0]; 7529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int START = 0; 7549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int DIR = START; 7559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int TAB = START; 7569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int TOP = 1; 7579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int DESCENT = 2; 75826d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien private static final int HYPHEN = 3; 75926d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien private static final int COLUMNS_NORMAL = 4; 7609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 76126d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien private static final int ELLIPSIS_START = 4; 76226d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien private static final int ELLIPSIS_COUNT = 5; 76326d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien private static final int COLUMNS_ELLIPSIZE = 6; 7649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int START_MASK = 0x1FFFFFFF; 7669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int DIR_SHIFT = 30; 7679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int TAB_MASK = 0x20000000; 7689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int ELLIPSIS_UNDEFINED = 0x80000000; 7709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 771