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; 2433b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport java.lang.ref.WeakReference; 269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/** 289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * DynamicLayout is a text layout that updates itself as the text is edited. 299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>This is used by widgets to control text layout. You should not need 309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to use this class directly unless you are implementing your own widget 319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * or custom display object, or need to call 329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.graphics.Canvas#drawText(java.lang.CharSequence, int, int, float, float, android.graphics.Paint) 339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Canvas.drawText()} directly.</p> 349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunnepublic class DynamicLayout extends Layout 369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project{ 379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int PRIORITY = 128; 3871afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne private static final int BLOCK_MINIMUM_CHARACTER_LENGTH = 400; 399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Make a layout for the specified text that will be updated as 429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the text is changed. 439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public DynamicLayout(CharSequence base, 459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project TextPaint paint, 469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int width, Alignment align, 479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float spacingmult, float spacingadd, 489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean includepad) { 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project this(base, base, paint, width, align, spacingmult, spacingadd, 509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project includepad); 519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Make a layout for the transformed text (password transformation 559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * being the primary example of a transformation) 569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * that will be updated as the base text is changed. 579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public DynamicLayout(CharSequence base, CharSequence display, 599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project TextPaint paint, 609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int width, Alignment align, 619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float spacingmult, float spacingadd, 629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean includepad) { 639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project this(base, display, paint, width, align, spacingmult, spacingadd, 649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project includepad, null, 0); 659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Make a layout for the transformed text (password transformation 699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * being the primary example of a transformation) 709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * that will be updated as the base text is changed. 719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * If ellipsize is non-null, the Layout will ellipsize the text 729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * down to ellipsizedWidth. 739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public DynamicLayout(CharSequence base, CharSequence display, 759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project TextPaint paint, 769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int width, Alignment align, 779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float spacingmult, float spacingadd, 789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean includepad, 799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project TextUtils.TruncateAt ellipsize, int ellipsizedWidth) { 80cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt this(base, display, paint, width, align, TextDirectionHeuristics.FIRSTSTRONG_LTR, 81ad0b051b133baf92f199c96a8ac1e81b3393190cFabrice Di Meglio spacingmult, spacingadd, includepad, ellipsize, ellipsizedWidth); 82cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt } 83cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt 84cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt /** 85cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt * Make a layout for the transformed text (password transformation 86cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt * being the primary example of a transformation) 87cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt * that will be updated as the base text is changed. 88cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt * If ellipsize is non-null, the Layout will ellipsize the text 89cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt * down to ellipsizedWidth. 90cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt * * 91cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt * *@hide 92cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt */ 93cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt public DynamicLayout(CharSequence base, CharSequence display, 94cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt TextPaint paint, 95cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt int width, Alignment align, TextDirectionHeuristic textDir, 96cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt float spacingmult, float spacingadd, 97cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt boolean includepad, 98ad0b051b133baf92f199c96a8ac1e81b3393190cFabrice Di Meglio TextUtils.TruncateAt ellipsize, int ellipsizedWidth) { 99cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt super((ellipsize == null) 100cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt ? display 101cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt : (display instanceof Spanned) 102cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt ? new SpannedEllipsizer(display) 1039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project : new Ellipsizer(display), 104cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt paint, width, align, textDir, spacingmult, spacingadd); 1059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBase = base; 1079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mDisplay = display; 1089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (ellipsize != null) { 1109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mInts = new PackedIntVector(COLUMNS_ELLIPSIZE); 1119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mEllipsizedWidth = ellipsizedWidth; 1129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mEllipsizeAt = ellipsize; 1139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 1149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mInts = new PackedIntVector(COLUMNS_NORMAL); 1159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mEllipsizedWidth = width; 1160a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne mEllipsizeAt = null; 1179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mObjects = new PackedObjectVector<Directions>(1); 1209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mIncludePad = includepad; 1229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 1249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This is annoying, but we can't refer to the layout until 1259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * superclass construction is finished, and the superclass 1269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * constructor wants the reference to the display text. 1279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 1289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This will break if the superclass constructor ever actually 1299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * cares about the content instead of just holding the reference. 1309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (ellipsize != null) { 1329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Ellipsizer e = (Ellipsizer) getText(); 1339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project e.mLayout = this; 1359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project e.mWidth = ellipsizedWidth; 1369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project e.mMethod = ellipsize; 1379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mEllipsize = true; 1389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Initial state is a single line with 0 characters (0 to 0), 1419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // with top at 0 and bottom at whatever is natural, and 1429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // undefined ellipsis. 1439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int[] start; 1459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (ellipsize != null) { 1479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project start = new int[COLUMNS_ELLIPSIZE]; 1489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project start[ELLIPSIS_START] = ELLIPSIS_UNDEFINED; 1499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 1509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project start = new int[COLUMNS_NORMAL]; 1519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Directions[] dirs = new Directions[] { DIRS_ALL_LEFT_TO_RIGHT }; 1549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Paint.FontMetricsInt fm = paint.getFontMetricsInt(); 1569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int asc = fm.ascent; 1579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int desc = fm.descent; 1589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project start[DIR] = DIR_LEFT_TO_RIGHT << DIR_SHIFT; 1609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project start[TOP] = 0; 1619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project start[DESCENT] = desc; 1629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mInts.insertAt(0, start); 1639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project start[TOP] = desc - asc; 1659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mInts.insertAt(1, start); 1669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mObjects.insertAt(0, dirs); 1689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Update from 0 characters to whatever the real text is 1709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project reflow(base, 0, 0, base.length()); 1719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (base instanceof Spannable) { 1739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mWatcher == null) 1749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mWatcher = new ChangeWatcher(this); 1759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Strip out any watchers for other DynamicLayouts. 1779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Spannable sp = (Spannable) base; 1789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ChangeWatcher[] spans = sp.getSpans(0, sp.length(), ChangeWatcher.class); 1799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < spans.length; i++) 1809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sp.removeSpan(spans[i]); 1819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sp.setSpan(mWatcher, 0, base.length(), 1839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Spannable.SPAN_INCLUSIVE_INCLUSIVE | 1849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (PRIORITY << Spannable.SPAN_PRIORITY_SHIFT)); 1859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void reflow(CharSequence s, int where, int before, int after) { 1899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (s != mBase) 1909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 1919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project CharSequence text = mDisplay; 1939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int len = text.length(); 1949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // seek back to the start of the paragraph 1969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int find = TextUtils.lastIndexOf(text, '\n', where - 1); 1989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (find < 0) 1999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project find = 0; 2009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project else 2019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project find = find + 1; 2029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project { 2049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int diff = where - find; 2059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project before += diff; 2069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project after += diff; 2079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project where -= diff; 2089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // seek forward to the end of the paragraph 2119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int look = TextUtils.indexOf(text, '\n', where + after); 2139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (look < 0) 2149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project look = len; 2159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project else 2169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project look++; // we want the index after the \n 2179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int change = look - (where + after); 2199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project before += change; 2209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project after += change; 2219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // seek further out to cover anything that is forced to wrap together 2239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (text instanceof Spanned) { 2259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Spanned sp = (Spanned) text; 2269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean again; 2279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project do { 2299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project again = false; 2309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Object[] force = sp.getSpans(where, where + after, 2329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project WrapTogetherSpan.class); 2339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < force.length; i++) { 2359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int st = sp.getSpanStart(force[i]); 2369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int en = sp.getSpanEnd(force[i]); 2379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (st < where) { 2399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project again = true; 2409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int diff = where - st; 2429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project before += diff; 2439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project after += diff; 2449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project where -= diff; 2459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (en > where + after) { 2489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project again = true; 2499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int diff = en - (where + after); 2519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project before += diff; 2529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project after += diff; 2539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } while (again); 2569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // find affected region of old layout 2599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int startline = getLineForOffset(where); 2619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int startv = getLineTop(startline); 2629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int endline = getLineForOffset(where + before); 2649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (where + after == len) 2659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project endline = getLineCount(); 2669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int endv = getLineTop(endline); 2679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean islast = (endline == getLineCount()); 2689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // generate new layout for affected text 2709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project StaticLayout reflowed; 272b724c346e19d63d7ff194b2b06c4a1e0f7bc07b7Amith Yamasani 2739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project synchronized (sLock) { 274b724c346e19d63d7ff194b2b06c4a1e0f7bc07b7Amith Yamasani reflowed = sStaticLayout; 275b724c346e19d63d7ff194b2b06c4a1e0f7bc07b7Amith Yamasani sStaticLayout = null; 2769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 278e5ea4403ce58982522554b7ff23f41e6551923c1Romain Guy if (reflowed == null) { 27909175735c562652be1a1b0dc0f941d36ac4f076aFabrice Di Meglio reflowed = new StaticLayout(null); 280e5ea4403ce58982522554b7ff23f41e6551923c1Romain Guy } else { 281e5ea4403ce58982522554b7ff23f41e6551923c1Romain Guy reflowed.prepare(); 282e5ea4403ce58982522554b7ff23f41e6551923c1Romain Guy } 2839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project reflowed.generate(text, where, where + after, 285d300e75eff0d5e54390400cbd3f80dc4cea8b617Gilles Debunne getPaint(), getWidth(), getTextDirectionHeuristic(), getSpacingMultiplier(), 286d300e75eff0d5e54390400cbd3f80dc4cea8b617Gilles Debunne getSpacingAdd(), false, 287d300e75eff0d5e54390400cbd3f80dc4cea8b617Gilles Debunne true, mEllipsizedWidth, mEllipsizeAt); 2889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int n = reflowed.getLineCount(); 2899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // If the new layout has a blank line at the end, but it is not 2919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // the very end of the buffer, then we already have a line that 2929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // starts there, so disregard the blank line. 2939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 29471afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne if (where + after != len && reflowed.getLineStart(n - 1) == where + after) 2959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project n--; 2969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // remove affected lines from old layout 2989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mInts.deleteAt(startline, endline - startline); 2999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mObjects.deleteAt(startline, endline - startline); 3009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // adjust offsets in layout for new height and offsets 3029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int ht = reflowed.getLineTop(n); 3049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int toppad = 0, botpad = 0; 3059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mIncludePad && startline == 0) { 3079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project toppad = reflowed.getTopPadding(); 3089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTopPadding = toppad; 3099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ht -= toppad; 3109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mIncludePad && islast) { 3129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project botpad = reflowed.getBottomPadding(); 3139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBottomPadding = botpad; 3149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ht += botpad; 3159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mInts.adjustValuesBelow(startline, START, after - before); 3189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mInts.adjustValuesBelow(startline, TOP, startv - endv + ht); 3199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // insert new layout 3219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int[] ints; 3239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mEllipsize) { 3259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ints = new int[COLUMNS_ELLIPSIZE]; 3269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ints[ELLIPSIS_START] = ELLIPSIS_UNDEFINED; 3279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 3289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ints = new int[COLUMNS_NORMAL]; 3299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Directions[] objects = new Directions[1]; 3329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < n; i++) { 3349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ints[START] = reflowed.getLineStart(i) | 3359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (reflowed.getParagraphDirection(i) << DIR_SHIFT) | 3369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (reflowed.getLineContainsTab(i) ? TAB_MASK : 0); 3379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int top = reflowed.getLineTop(i) + startv; 3399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (i > 0) 3409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project top -= toppad; 3419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ints[TOP] = top; 3429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int desc = reflowed.getLineDescent(i); 3449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (i == n - 1) 3459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project desc += botpad; 3469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ints[DESCENT] = desc; 3489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project objects[0] = reflowed.getLineDirections(i); 3499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mEllipsize) { 3519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ints[ELLIPSIS_START] = reflowed.getEllipsisStart(i); 3529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ints[ELLIPSIS_COUNT] = reflowed.getEllipsisCount(i); 3539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mInts.insertAt(startline + i, ints); 3569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mObjects.insertAt(startline + i, objects); 3579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 35971afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne updateBlocks(startline, endline - 1, n); 36071afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne 3619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project synchronized (sLock) { 362b724c346e19d63d7ff194b2b06c4a1e0f7bc07b7Amith Yamasani sStaticLayout = reflowed; 363e5ea4403ce58982522554b7ff23f41e6551923c1Romain Guy reflowed.finish(); 3649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 36733b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne /** 36871afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne * Create the initial block structure, cutting the text into blocks of at least 36971afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne * BLOCK_MINIMUM_CHARACTER_SIZE characters, aligned on the ends of paragraphs. 37071afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne */ 37171afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne private void createBlocks() { 37271afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne int offset = BLOCK_MINIMUM_CHARACTER_LENGTH; 37371afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne mNumberOfBlocks = 0; 37471afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne final CharSequence text = mDisplay; 37571afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne 37671afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne while (true) { 37771afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne offset = TextUtils.indexOf(text, '\n', offset); 37871afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne if (offset < 0) { 37971afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne addBlockAtOffset(text.length()); 38071afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne break; 38171afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne } else { 38271afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne addBlockAtOffset(offset); 38371afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne offset += BLOCK_MINIMUM_CHARACTER_LENGTH; 38471afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne } 38571afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne } 38671afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne 38771afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne // mBlockIndices and mBlockEndLines should have the same length 38871afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne mBlockIndices = new int[mBlockEndLines.length]; 38971afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne for (int i = 0; i < mBlockEndLines.length; i++) { 39071afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne mBlockIndices[i] = INVALID_BLOCK_INDEX; 39171afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne } 39271afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne } 39371afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne 39471afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne /** 39571afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne * Create a new block, ending at the specified character offset. 39671afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne * A block will actually be created only if has at least one line, i.e. this offset is 39771afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne * not on the end line of the previous block. 39871afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne */ 39971afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne private void addBlockAtOffset(int offset) { 40071afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne final int line = getLineForOffset(offset); 40171afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne 40271afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne if (mBlockEndLines == null) { 40371afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne // Initial creation of the array, no test on previous block ending line 40471afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne mBlockEndLines = new int[ArrayUtils.idealIntArraySize(1)]; 40571afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne mBlockEndLines[mNumberOfBlocks] = line; 40671afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne mNumberOfBlocks++; 40771afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne return; 40871afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne } 40971afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne 41071afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne final int previousBlockEndLine = mBlockEndLines[mNumberOfBlocks - 1]; 41171afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne if (line > previousBlockEndLine) { 41271afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne if (mNumberOfBlocks == mBlockEndLines.length) { 41371afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne // Grow the array if needed 41471afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne int[] blockEndLines = new int[ArrayUtils.idealIntArraySize(mNumberOfBlocks + 1)]; 41571afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne System.arraycopy(mBlockEndLines, 0, blockEndLines, 0, mNumberOfBlocks); 41671afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne mBlockEndLines = blockEndLines; 41771afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne } 41871afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne mBlockEndLines[mNumberOfBlocks] = line; 41971afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne mNumberOfBlocks++; 42071afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne } 42171afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne } 42271afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne 42371afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne /** 42433b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * This method is called every time the layout is reflowed after an edition. 42533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * It updates the internal block data structure. The text is split in blocks 42633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * of contiguous lines, with at least one block for the entire text. 42733b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * When a range of lines is edited, new blocks (from 0 to 3 depending on the 42833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * overlap structure) will replace the set of overlapping blocks. 42933b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * Blocks are listed in order and are represented by their ending line number. 43033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * An index is associated to each block (which will be used by display lists), 43133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * this class simply invalidates the index of blocks overlapping a modification. 43233b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * 4331e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne * This method is package private and not private so that it can be tested. 4341e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne * 43533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * @param startLine the first line of the range of modified lines 43633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * @param endLine the last line of the range, possibly equal to startLine, lower 43733b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * than getLineCount() 43833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * @param newLineCount the number of lines that will replace the range, possibly 0 4391e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne * 4401e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne * @hide 44133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne */ 4421e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne void updateBlocks(int startLine, int endLine, int newLineCount) { 44371afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne if (mBlockEndLines == null) { 44471afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne createBlocks(); 44571afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne return; 44671afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne } 44771afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne 44833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne int firstBlock = -1; 44933b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne int lastBlock = -1; 45033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne for (int i = 0; i < mNumberOfBlocks; i++) { 451157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne if (mBlockEndLines[i] >= startLine) { 45233b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne firstBlock = i; 45333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne break; 45433b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 45533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 45633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne for (int i = firstBlock; i < mNumberOfBlocks; i++) { 457157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne if (mBlockEndLines[i] >= endLine) { 45833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne lastBlock = i; 45933b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne break; 46033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 46133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 462157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne final int lastBlockEndLine = mBlockEndLines[lastBlock]; 46333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 46433b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne boolean createBlockBefore = startLine > (firstBlock == 0 ? 0 : 465157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne mBlockEndLines[firstBlock - 1] + 1); 46633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne boolean createBlock = newLineCount > 0; 467157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne boolean createBlockAfter = endLine < mBlockEndLines[lastBlock]; 46833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 46933b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne int numAddedBlocks = 0; 47033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne if (createBlockBefore) numAddedBlocks++; 47133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne if (createBlock) numAddedBlocks++; 47233b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne if (createBlockAfter) numAddedBlocks++; 47333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 47433b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne final int numRemovedBlocks = lastBlock - firstBlock + 1; 47533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne final int newNumberOfBlocks = mNumberOfBlocks + numAddedBlocks - numRemovedBlocks; 47633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 47733b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne if (newNumberOfBlocks == 0) { 47833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne // Even when text is empty, there is actually one line and hence one block 479157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne mBlockEndLines[0] = 0; 48033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne mBlockIndices[0] = INVALID_BLOCK_INDEX; 48133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne mNumberOfBlocks = 1; 48233b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne return; 48333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 48433b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 485157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne if (newNumberOfBlocks > mBlockEndLines.length) { 48633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne final int newSize = ArrayUtils.idealIntArraySize(newNumberOfBlocks); 487157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne int[] blockEndLines = new int[newSize]; 48833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne int[] blockIndices = new int[newSize]; 489157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne System.arraycopy(mBlockEndLines, 0, blockEndLines, 0, firstBlock); 49033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne System.arraycopy(mBlockIndices, 0, blockIndices, 0, firstBlock); 491157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne System.arraycopy(mBlockEndLines, lastBlock + 1, 492157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne blockEndLines, firstBlock + numAddedBlocks, mNumberOfBlocks - lastBlock - 1); 49333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne System.arraycopy(mBlockIndices, lastBlock + 1, 49433b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne blockIndices, firstBlock + numAddedBlocks, mNumberOfBlocks - lastBlock - 1); 495157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne mBlockEndLines = blockEndLines; 49633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne mBlockIndices = blockIndices; 49733b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } else { 498157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne System.arraycopy(mBlockEndLines, lastBlock + 1, 499157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne mBlockEndLines, firstBlock + numAddedBlocks, mNumberOfBlocks - lastBlock - 1); 50033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne System.arraycopy(mBlockIndices, lastBlock + 1, 50133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne mBlockIndices, firstBlock + numAddedBlocks, mNumberOfBlocks - lastBlock - 1); 50233b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 50333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 50433b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne mNumberOfBlocks = newNumberOfBlocks; 50533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne final int deltaLines = newLineCount - (endLine - startLine + 1); 50633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne for (int i = firstBlock + numAddedBlocks; i < mNumberOfBlocks; i++) { 507157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne mBlockEndLines[i] += deltaLines; 50833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 50933b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 51033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne int blockIndex = firstBlock; 51133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne if (createBlockBefore) { 512157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne mBlockEndLines[blockIndex] = startLine - 1; 51333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne mBlockIndices[blockIndex] = INVALID_BLOCK_INDEX; 51433b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne blockIndex++; 51533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 51633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 51733b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne if (createBlock) { 518157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne mBlockEndLines[blockIndex] = startLine + newLineCount - 1; 51933b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne mBlockIndices[blockIndex] = INVALID_BLOCK_INDEX; 52033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne blockIndex++; 52133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 52233b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 52333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne if (createBlockAfter) { 524157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne mBlockEndLines[blockIndex] = lastBlockEndLine + deltaLines; 52533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne mBlockIndices[blockIndex] = INVALID_BLOCK_INDEX; 52633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 52733b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 52833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 52933b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne /** 5301e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne * This package private method is used for test purposes only 5311e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne * @hide 5321e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne */ 533157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne void setBlocksDataForTest(int[] blockEndLines, int[] blockIndices, int numberOfBlocks) { 534157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne mBlockEndLines = new int[blockEndLines.length]; 5351e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne mBlockIndices = new int[blockIndices.length]; 536157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne System.arraycopy(blockEndLines, 0, mBlockEndLines, 0, blockEndLines.length); 5371e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne System.arraycopy(blockIndices, 0, mBlockIndices, 0, blockIndices.length); 5381e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne mNumberOfBlocks = numberOfBlocks; 5391e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne } 5401e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne 5411e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne /** 54233b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * @hide 54333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne */ 544157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne public int[] getBlockEndLines() { 545157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne return mBlockEndLines; 54633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 54733b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 54833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne /** 54933b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * @hide 55033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne */ 55133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne public int[] getBlockIndices() { 55233b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne return mBlockIndices; 55333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 55433b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 55533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne /** 55633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * @hide 55733b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne */ 55833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne public int getNumberOfBlocks() { 55933b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne return mNumberOfBlocks; 56033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 56133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 562d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 5639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getLineCount() { 5649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mInts.size() - 1; 5659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 567d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 5689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getLineTop(int line) { 5699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mInts.getValue(line, TOP); 5709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 572d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 5739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getLineDescent(int line) { 5749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mInts.getValue(line, DESCENT); 5759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 577d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 5789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getLineStart(int line) { 5799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mInts.getValue(line, START) & START_MASK; 5809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 582d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 5839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean getLineContainsTab(int line) { 5849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (mInts.getValue(line, TAB) & TAB_MASK) != 0; 5859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 587d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 5889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getParagraphDirection(int line) { 5899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mInts.getValue(line, DIR) >> DIR_SHIFT; 5909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 592d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 5939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public final Directions getLineDirections(int line) { 5949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mObjects.getValue(line, 0); 5959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 597d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 5989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getTopPadding() { 5999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mTopPadding; 6009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 602d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 6039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getBottomPadding() { 6049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mBottomPadding; 6059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 6089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getEllipsizedWidth() { 6099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mEllipsizedWidth; 6109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6120a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne private static class ChangeWatcher implements TextWatcher, SpanWatcher { 6139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public ChangeWatcher(DynamicLayout layout) { 614d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne mLayout = new WeakReference<DynamicLayout>(layout); 6159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void reflow(CharSequence s, int where, int before, int after) { 618d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne DynamicLayout ml = mLayout.get(); 6199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (ml != null) 6219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ml.reflow(s, where, before, after); 6229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project else if (s instanceof Spannable) 6239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ((Spannable) s).removeSpan(this); 6249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6260a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne public void beforeTextChanged(CharSequence s, int where, int before, int after) { 62733b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne // Intentionally empty 6289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6300a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne public void onTextChanged(CharSequence s, int where, int before, int after) { 6319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project reflow(s, where, before, after); 6329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void afterTextChanged(Editable s) { 63533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne // Intentionally empty 6369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void onSpanAdded(Spannable s, Object o, int start, int end) { 6399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (o instanceof UpdateLayout) 6409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project reflow(s, start, end - start, end - start); 6419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void onSpanRemoved(Spannable s, Object o, int start, int end) { 6449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (o instanceof UpdateLayout) 6459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project reflow(s, start, end - start, end - start); 6469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6480a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne public void onSpanChanged(Spannable s, Object o, int start, int end, int nstart, int nend) { 6499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (o instanceof UpdateLayout) { 6509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project reflow(s, start, end - start, end - start); 6519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project reflow(s, nstart, nend - nstart, nend - nstart); 6529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 655d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne private WeakReference<DynamicLayout> mLayout; 6569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 658d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 6599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getEllipsisStart(int line) { 6609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mEllipsizeAt == null) { 6619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 6629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mInts.getValue(line, ELLIPSIS_START); 6659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 667d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 6689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getEllipsisCount(int line) { 6699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mEllipsizeAt == null) { 6709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 6719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mInts.getValue(line, ELLIPSIS_COUNT); 6749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private CharSequence mBase; 6779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private CharSequence mDisplay; 6789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private ChangeWatcher mWatcher; 6799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mIncludePad; 6809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mEllipsize; 6819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mEllipsizedWidth; 6829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private TextUtils.TruncateAt mEllipsizeAt; 6839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private PackedIntVector mInts; 6859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private PackedObjectVector<Directions> mObjects; 6869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 687cde6adf45c90ad3fdc94446ede6a228ce264c886Romain Guy /** 68833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * Value used in mBlockIndices when a block has been created or recycled and indicating that its 68933b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * display list needs to be re-created. 69033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * @hide 69133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne */ 69233b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne public static final int INVALID_BLOCK_INDEX = -1; 693157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne // Stores the line numbers of the last line of each block (inclusive) 694157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne private int[] mBlockEndLines; 69533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne // The indices of this block's display list in TextView's internal display list array or 69633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne // INVALID_BLOCK_INDEX if this block has been invalidated during an edition 69733b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne private int[] mBlockIndices; 69833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne // Number of items actually currently being used in the above 2 arrays 69933b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne private int mNumberOfBlocks; 70033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 7019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mTopPadding, mBottomPadding; 7029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 70309175735c562652be1a1b0dc0f941d36ac4f076aFabrice Di Meglio private static StaticLayout sStaticLayout = new StaticLayout(null); 7048059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio 705e5ea4403ce58982522554b7ff23f41e6551923c1Romain Guy private static final Object[] sLock = new Object[0]; 7069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int START = 0; 7089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int DIR = START; 7099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int TAB = START; 7109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int TOP = 1; 7119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int DESCENT = 2; 7129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int COLUMNS_NORMAL = 3; 7139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int ELLIPSIS_START = 3; 7159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int ELLIPSIS_COUNT = 4; 7169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int COLUMNS_ELLIPSIZE = 5; 7179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int START_MASK = 0x1FFFFFFF; 7199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int DIR_SHIFT = 30; 7209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int TAB_MASK = 0x20000000; 7219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int ELLIPSIS_UNDEFINED = 0x80000000; 7239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 724