DynamicLayout.java revision 531c30c62b14881aab31a5133920a971b1fbb50e
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, 8239b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien spacingmult, spacingadd, includepad, StaticLayout.BREAK_STRATEGY_SIMPLE, 8339b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien ellipsize, ellipsizedWidth); 84cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt } 85cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt 86cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt /** 87cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt * Make a layout for the transformed text (password transformation 88cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt * being the primary example of a transformation) 89cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt * that will be updated as the base text is changed. 90cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt * If ellipsize is non-null, the Layout will ellipsize the text 91cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt * down to ellipsizedWidth. 92cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt * * 93cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt * *@hide 94cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt */ 95cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt public DynamicLayout(CharSequence base, CharSequence display, 96cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt TextPaint paint, 97cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt int width, Alignment align, TextDirectionHeuristic textDir, 98cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt float spacingmult, float spacingadd, 9939b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien boolean includepad, int breakStrategy, 100ad0b051b133baf92f199c96a8ac1e81b3393190cFabrice Di Meglio TextUtils.TruncateAt ellipsize, int ellipsizedWidth) { 101cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt super((ellipsize == null) 102cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt ? display 103cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt : (display instanceof Spanned) 104cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt ? new SpannedEllipsizer(display) 1059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project : new Ellipsizer(display), 106cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt paint, width, align, textDir, spacingmult, spacingadd); 1079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBase = base; 1099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mDisplay = display; 1109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (ellipsize != null) { 1129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mInts = new PackedIntVector(COLUMNS_ELLIPSIZE); 1139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mEllipsizedWidth = ellipsizedWidth; 1149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mEllipsizeAt = ellipsize; 1159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 1169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mInts = new PackedIntVector(COLUMNS_NORMAL); 1179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mEllipsizedWidth = width; 1180a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne mEllipsizeAt = null; 1199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mObjects = new PackedObjectVector<Directions>(1); 1229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mIncludePad = includepad; 12439b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien mBreakStrategy = breakStrategy; 1259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 1279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This is annoying, but we can't refer to the layout until 1289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * superclass construction is finished, and the superclass 1299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * constructor wants the reference to the display text. 1309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 1319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This will break if the superclass constructor ever actually 1329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * cares about the content instead of just holding the reference. 1339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (ellipsize != null) { 1359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Ellipsizer e = (Ellipsizer) getText(); 1369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project e.mLayout = this; 1389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project e.mWidth = ellipsizedWidth; 1399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project e.mMethod = ellipsize; 1409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mEllipsize = true; 1419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Initial state is a single line with 0 characters (0 to 0), 1449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // with top at 0 and bottom at whatever is natural, and 1459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // undefined ellipsis. 1469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int[] start; 1489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (ellipsize != null) { 1509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project start = new int[COLUMNS_ELLIPSIZE]; 1519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project start[ELLIPSIS_START] = ELLIPSIS_UNDEFINED; 1529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 1539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project start = new int[COLUMNS_NORMAL]; 1549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Directions[] dirs = new Directions[] { DIRS_ALL_LEFT_TO_RIGHT }; 1579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Paint.FontMetricsInt fm = paint.getFontMetricsInt(); 1599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int asc = fm.ascent; 1609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int desc = fm.descent; 1619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project start[DIR] = DIR_LEFT_TO_RIGHT << DIR_SHIFT; 1639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project start[TOP] = 0; 1649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project start[DESCENT] = desc; 1659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mInts.insertAt(0, start); 1669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project start[TOP] = desc - asc; 1689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mInts.insertAt(1, start); 1699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mObjects.insertAt(0, dirs); 1719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Update from 0 characters to whatever the real text is 1739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project reflow(base, 0, 0, base.length()); 1749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (base instanceof Spannable) { 1769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mWatcher == null) 1779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mWatcher = new ChangeWatcher(this); 1789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Strip out any watchers for other DynamicLayouts. 1809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Spannable sp = (Spannable) base; 1819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ChangeWatcher[] spans = sp.getSpans(0, sp.length(), ChangeWatcher.class); 1829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < spans.length; i++) 1839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sp.removeSpan(spans[i]); 1849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sp.setSpan(mWatcher, 0, base.length(), 1869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Spannable.SPAN_INCLUSIVE_INCLUSIVE | 1879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (PRIORITY << Spannable.SPAN_PRIORITY_SHIFT)); 1889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void reflow(CharSequence s, int where, int before, int after) { 1929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (s != mBase) 1939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 1949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project CharSequence text = mDisplay; 1969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int len = text.length(); 1979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // seek back to the start of the paragraph 1999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int find = TextUtils.lastIndexOf(text, '\n', where - 1); 2019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (find < 0) 2029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project find = 0; 2039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project else 2049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project find = find + 1; 2059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project { 2079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int diff = where - find; 2089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project before += diff; 2099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project after += diff; 2109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project where -= diff; 2119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // seek forward to the end of the paragraph 2149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int look = TextUtils.indexOf(text, '\n', where + after); 2169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (look < 0) 2179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project look = len; 2189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project else 2199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project look++; // we want the index after the \n 2209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int change = look - (where + after); 2229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project before += change; 2239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project after += change; 2249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // seek further out to cover anything that is forced to wrap together 2269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (text instanceof Spanned) { 2289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Spanned sp = (Spanned) text; 2299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean again; 2309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project do { 2329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project again = false; 2339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Object[] force = sp.getSpans(where, where + after, 2359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project WrapTogetherSpan.class); 2369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < force.length; i++) { 2389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int st = sp.getSpanStart(force[i]); 2399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int en = sp.getSpanEnd(force[i]); 2409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (st < where) { 2429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project again = true; 2439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int diff = where - st; 2459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project before += diff; 2469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project after += diff; 2479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project where -= diff; 2489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (en > where + after) { 2519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project again = true; 2529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int diff = en - (where + after); 2549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project before += diff; 2559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project after += diff; 2569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } while (again); 2599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // find affected region of old layout 2629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int startline = getLineForOffset(where); 2649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int startv = getLineTop(startline); 2659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int endline = getLineForOffset(where + before); 2679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (where + after == len) 2689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project endline = getLineCount(); 2699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int endv = getLineTop(endline); 2709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean islast = (endline == getLineCount()); 2719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // generate new layout for affected text 2739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project StaticLayout reflowed; 275d3ab692d28018825578ff05832644cfad60233fbRaph Levien StaticLayout.Builder b; 276b724c346e19d63d7ff194b2b06c4a1e0f7bc07b7Amith Yamasani 2779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project synchronized (sLock) { 278b724c346e19d63d7ff194b2b06c4a1e0f7bc07b7Amith Yamasani reflowed = sStaticLayout; 279d3ab692d28018825578ff05832644cfad60233fbRaph Levien b = sBuilder; 280b724c346e19d63d7ff194b2b06c4a1e0f7bc07b7Amith Yamasani sStaticLayout = null; 281d3ab692d28018825578ff05832644cfad60233fbRaph Levien sBuilder = null; 2829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 284e5ea4403ce58982522554b7ff23f41e6551923c1Romain Guy if (reflowed == null) { 28509175735c562652be1a1b0dc0f941d36ac4f076aFabrice Di Meglio reflowed = new StaticLayout(null); 286ebd66ca600dc2c43edb0830bcf1a92fafec30a5aRaph Levien b = StaticLayout.Builder.obtain(text, where, where + after, getPaint(), getWidth()); 287d3ab692d28018825578ff05832644cfad60233fbRaph Levien } 288d3ab692d28018825578ff05832644cfad60233fbRaph Levien 289d3ab692d28018825578ff05832644cfad60233fbRaph Levien b.setText(text, where, where + after) 290d3ab692d28018825578ff05832644cfad60233fbRaph Levien .setPaint(getPaint()) 291d3ab692d28018825578ff05832644cfad60233fbRaph Levien .setWidth(getWidth()) 292d3ab692d28018825578ff05832644cfad60233fbRaph Levien .setTextDir(getTextDirectionHeuristic()) 293531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien .setLineSpacing(getSpacingAdd(), getSpacingMultiplier()) 294d3ab692d28018825578ff05832644cfad60233fbRaph Levien .setEllipsizedWidth(mEllipsizedWidth) 29539b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien .setEllipsize(mEllipsizeAt) 29639b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien .setBreakStrategy(mBreakStrategy); 297d3ab692d28018825578ff05832644cfad60233fbRaph Levien reflowed.generate(b, false, true); 2989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int n = reflowed.getLineCount(); 2999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // If the new layout has a blank line at the end, but it is not 3019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // the very end of the buffer, then we already have a line that 3029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // starts there, so disregard the blank line. 3039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 30471afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne if (where + after != len && reflowed.getLineStart(n - 1) == where + after) 3059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project n--; 3069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // remove affected lines from old layout 3089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mInts.deleteAt(startline, endline - startline); 3099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mObjects.deleteAt(startline, endline - startline); 3109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // adjust offsets in layout for new height and offsets 3129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int ht = reflowed.getLineTop(n); 3149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int toppad = 0, botpad = 0; 3159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mIncludePad && startline == 0) { 3179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project toppad = reflowed.getTopPadding(); 3189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTopPadding = toppad; 3199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ht -= toppad; 3209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mIncludePad && islast) { 3229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project botpad = reflowed.getBottomPadding(); 3239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBottomPadding = botpad; 3249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ht += botpad; 3259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mInts.adjustValuesBelow(startline, START, after - before); 3289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mInts.adjustValuesBelow(startline, TOP, startv - endv + ht); 3299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // insert new layout 3319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int[] ints; 3339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mEllipsize) { 3359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ints = new int[COLUMNS_ELLIPSIZE]; 3369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ints[ELLIPSIS_START] = ELLIPSIS_UNDEFINED; 3379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 3389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ints = new int[COLUMNS_NORMAL]; 3399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Directions[] objects = new Directions[1]; 3429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < n; i++) { 3449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ints[START] = reflowed.getLineStart(i) | 3459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (reflowed.getParagraphDirection(i) << DIR_SHIFT) | 3469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (reflowed.getLineContainsTab(i) ? TAB_MASK : 0); 3479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int top = reflowed.getLineTop(i) + startv; 3499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (i > 0) 3509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project top -= toppad; 3519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ints[TOP] = top; 3529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int desc = reflowed.getLineDescent(i); 3549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (i == n - 1) 3559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project desc += botpad; 3569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ints[DESCENT] = desc; 3589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project objects[0] = reflowed.getLineDirections(i); 3599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 36026d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien ints[HYPHEN] = reflowed.getHyphen(i); 36126d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien 3629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mEllipsize) { 3639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ints[ELLIPSIS_START] = reflowed.getEllipsisStart(i); 3649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ints[ELLIPSIS_COUNT] = reflowed.getEllipsisCount(i); 3659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mInts.insertAt(startline + i, ints); 3689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mObjects.insertAt(startline + i, objects); 3699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 37171afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne updateBlocks(startline, endline - 1, n); 37271afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne 373d3ab692d28018825578ff05832644cfad60233fbRaph Levien b.finish(); 3749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project synchronized (sLock) { 375b724c346e19d63d7ff194b2b06c4a1e0f7bc07b7Amith Yamasani sStaticLayout = reflowed; 376d3ab692d28018825578ff05832644cfad60233fbRaph Levien sBuilder = b; 3779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 38033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne /** 38171afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne * Create the initial block structure, cutting the text into blocks of at least 38271afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne * BLOCK_MINIMUM_CHARACTER_SIZE characters, aligned on the ends of paragraphs. 38371afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne */ 38471afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne private void createBlocks() { 38571afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne int offset = BLOCK_MINIMUM_CHARACTER_LENGTH; 38671afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne mNumberOfBlocks = 0; 38771afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne final CharSequence text = mDisplay; 38871afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne 38971afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne while (true) { 39071afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne offset = TextUtils.indexOf(text, '\n', offset); 39171afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne if (offset < 0) { 39271afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne addBlockAtOffset(text.length()); 39371afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne break; 39471afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne } else { 39571afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne addBlockAtOffset(offset); 39671afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne offset += BLOCK_MINIMUM_CHARACTER_LENGTH; 39771afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne } 39871afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne } 39971afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne 40071afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne // mBlockIndices and mBlockEndLines should have the same length 40171afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne mBlockIndices = new int[mBlockEndLines.length]; 40271afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne for (int i = 0; i < mBlockEndLines.length; i++) { 40371afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne mBlockIndices[i] = INVALID_BLOCK_INDEX; 40471afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne } 40571afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne } 40671afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne 40771afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne /** 40871afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne * Create a new block, ending at the specified character offset. 40971afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne * A block will actually be created only if has at least one line, i.e. this offset is 41071afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne * not on the end line of the previous block. 41171afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne */ 41271afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne private void addBlockAtOffset(int offset) { 41371afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne final int line = getLineForOffset(offset); 41471afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne 41571afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne if (mBlockEndLines == null) { 41671afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne // Initial creation of the array, no test on previous block ending line 417776abc24cdd18610232a50b997cce3cffa74609bAdam Lesinski mBlockEndLines = ArrayUtils.newUnpaddedIntArray(1); 41871afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne mBlockEndLines[mNumberOfBlocks] = line; 41971afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne mNumberOfBlocks++; 42071afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne return; 42171afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne } 42271afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne 42371afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne final int previousBlockEndLine = mBlockEndLines[mNumberOfBlocks - 1]; 42471afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne if (line > previousBlockEndLine) { 425776abc24cdd18610232a50b997cce3cffa74609bAdam Lesinski mBlockEndLines = GrowingArrayUtils.append(mBlockEndLines, mNumberOfBlocks, line); 42671afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne mNumberOfBlocks++; 42771afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne } 42871afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne } 42971afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne 43071afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne /** 43133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * This method is called every time the layout is reflowed after an edition. 43233b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * It updates the internal block data structure. The text is split in blocks 43333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * of contiguous lines, with at least one block for the entire text. 43433b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * When a range of lines is edited, new blocks (from 0 to 3 depending on the 43533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * overlap structure) will replace the set of overlapping blocks. 43633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * Blocks are listed in order and are represented by their ending line number. 43733b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * An index is associated to each block (which will be used by display lists), 43833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * this class simply invalidates the index of blocks overlapping a modification. 43933b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * 4401e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne * This method is package private and not private so that it can be tested. 4411e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne * 44233b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * @param startLine the first line of the range of modified lines 44333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * @param endLine the last line of the range, possibly equal to startLine, lower 44433b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * than getLineCount() 44533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * @param newLineCount the number of lines that will replace the range, possibly 0 4461e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne * 4471e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne * @hide 44833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne */ 4491e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne void updateBlocks(int startLine, int endLine, int newLineCount) { 45071afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne if (mBlockEndLines == null) { 45171afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne createBlocks(); 45271afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne return; 45371afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne } 45471afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne 45533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne int firstBlock = -1; 45633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne int lastBlock = -1; 45733b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne for (int i = 0; i < mNumberOfBlocks; i++) { 458157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne if (mBlockEndLines[i] >= startLine) { 45933b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne firstBlock = i; 46033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne break; 46133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 46233b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 46333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne for (int i = firstBlock; i < mNumberOfBlocks; i++) { 464157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne if (mBlockEndLines[i] >= endLine) { 46533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne lastBlock = i; 46633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne break; 46733b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 46833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 469157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne final int lastBlockEndLine = mBlockEndLines[lastBlock]; 47033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 47133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne boolean createBlockBefore = startLine > (firstBlock == 0 ? 0 : 472157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne mBlockEndLines[firstBlock - 1] + 1); 47333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne boolean createBlock = newLineCount > 0; 474157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne boolean createBlockAfter = endLine < mBlockEndLines[lastBlock]; 47533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 47633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne int numAddedBlocks = 0; 47733b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne if (createBlockBefore) numAddedBlocks++; 47833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne if (createBlock) numAddedBlocks++; 47933b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne if (createBlockAfter) numAddedBlocks++; 48033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 48133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne final int numRemovedBlocks = lastBlock - firstBlock + 1; 48233b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne final int newNumberOfBlocks = mNumberOfBlocks + numAddedBlocks - numRemovedBlocks; 48333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 48433b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne if (newNumberOfBlocks == 0) { 48533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne // Even when text is empty, there is actually one line and hence one block 486157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne mBlockEndLines[0] = 0; 48733b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne mBlockIndices[0] = INVALID_BLOCK_INDEX; 48833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne mNumberOfBlocks = 1; 48933b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne return; 49033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 49133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 492157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne if (newNumberOfBlocks > mBlockEndLines.length) { 493776abc24cdd18610232a50b997cce3cffa74609bAdam Lesinski int[] blockEndLines = ArrayUtils.newUnpaddedIntArray( 494776abc24cdd18610232a50b997cce3cffa74609bAdam Lesinski Math.max(mBlockEndLines.length * 2, newNumberOfBlocks)); 495776abc24cdd18610232a50b997cce3cffa74609bAdam Lesinski int[] blockIndices = new int[blockEndLines.length]; 496157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne System.arraycopy(mBlockEndLines, 0, blockEndLines, 0, firstBlock); 49733b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne System.arraycopy(mBlockIndices, 0, blockIndices, 0, firstBlock); 498157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne System.arraycopy(mBlockEndLines, lastBlock + 1, 499157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne blockEndLines, firstBlock + numAddedBlocks, mNumberOfBlocks - lastBlock - 1); 50033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne System.arraycopy(mBlockIndices, lastBlock + 1, 50133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne blockIndices, firstBlock + numAddedBlocks, mNumberOfBlocks - lastBlock - 1); 502157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne mBlockEndLines = blockEndLines; 50333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne mBlockIndices = blockIndices; 50433b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } else { 505157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne System.arraycopy(mBlockEndLines, lastBlock + 1, 506157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne mBlockEndLines, firstBlock + numAddedBlocks, mNumberOfBlocks - lastBlock - 1); 50733b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne System.arraycopy(mBlockIndices, lastBlock + 1, 50833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne mBlockIndices, firstBlock + numAddedBlocks, mNumberOfBlocks - lastBlock - 1); 50933b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 51033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 51133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne mNumberOfBlocks = newNumberOfBlocks; 51263b3eb65234c8a8b9224c262442816cc429560efRaph Levien int newFirstChangedBlock; 51333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne final int deltaLines = newLineCount - (endLine - startLine + 1); 514955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee if (deltaLines != 0) { 515955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee // Display list whose index is >= mIndexFirstChangedBlock is valid 516955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee // but it needs to update its drawing location. 51763b3eb65234c8a8b9224c262442816cc429560efRaph Levien newFirstChangedBlock = firstBlock + numAddedBlocks; 51863b3eb65234c8a8b9224c262442816cc429560efRaph Levien for (int i = newFirstChangedBlock; i < mNumberOfBlocks; i++) { 519955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee mBlockEndLines[i] += deltaLines; 520955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee } 521955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee } else { 52263b3eb65234c8a8b9224c262442816cc429560efRaph Levien newFirstChangedBlock = mNumberOfBlocks; 52333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 52463b3eb65234c8a8b9224c262442816cc429560efRaph Levien mIndexFirstChangedBlock = Math.min(mIndexFirstChangedBlock, newFirstChangedBlock); 52533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 52633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne int blockIndex = firstBlock; 52733b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne if (createBlockBefore) { 528157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne mBlockEndLines[blockIndex] = startLine - 1; 52933b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne mBlockIndices[blockIndex] = INVALID_BLOCK_INDEX; 53033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne blockIndex++; 53133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 53233b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 53333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne if (createBlock) { 534157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne mBlockEndLines[blockIndex] = startLine + newLineCount - 1; 53533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne mBlockIndices[blockIndex] = INVALID_BLOCK_INDEX; 53633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne blockIndex++; 53733b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 53833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 53933b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne if (createBlockAfter) { 540157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne mBlockEndLines[blockIndex] = lastBlockEndLine + deltaLines; 54133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne mBlockIndices[blockIndex] = INVALID_BLOCK_INDEX; 54233b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 54333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 54433b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 54533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne /** 5461e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne * This package private method is used for test purposes only 5471e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne * @hide 5481e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne */ 549157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne void setBlocksDataForTest(int[] blockEndLines, int[] blockIndices, int numberOfBlocks) { 550157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne mBlockEndLines = new int[blockEndLines.length]; 5511e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne mBlockIndices = new int[blockIndices.length]; 552157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne System.arraycopy(blockEndLines, 0, mBlockEndLines, 0, blockEndLines.length); 5531e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne System.arraycopy(blockIndices, 0, mBlockIndices, 0, blockIndices.length); 5541e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne mNumberOfBlocks = numberOfBlocks; 5551e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne } 5561e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne 5571e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne /** 55833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * @hide 55933b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne */ 560157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne public int[] getBlockEndLines() { 561157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne return mBlockEndLines; 56233b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 56333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 56433b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne /** 56533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * @hide 56633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne */ 56733b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne public int[] getBlockIndices() { 56833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne return mBlockIndices; 56933b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 57033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 57133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne /** 57233b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * @hide 57333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne */ 57433b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne public int getNumberOfBlocks() { 57533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne return mNumberOfBlocks; 57633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 57733b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 578955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee /** 579955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee * @hide 580955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee */ 581955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee public int getIndexFirstChangedBlock() { 582955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee return mIndexFirstChangedBlock; 583955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee } 584955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee 585955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee /** 586955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee * @hide 587955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee */ 588955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee public void setIndexFirstChangedBlock(int i) { 589955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee mIndexFirstChangedBlock = i; 590955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee } 591955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee 592d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 5939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getLineCount() { 5949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mInts.size() - 1; 5959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 597d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 5989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getLineTop(int line) { 5999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mInts.getValue(line, TOP); 6009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 602d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 6039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getLineDescent(int line) { 6049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mInts.getValue(line, DESCENT); 6059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 607d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 6089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getLineStart(int line) { 6099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mInts.getValue(line, START) & START_MASK; 6109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 612d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 6139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean getLineContainsTab(int line) { 6149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (mInts.getValue(line, TAB) & TAB_MASK) != 0; 6159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 617d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 6189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getParagraphDirection(int line) { 6199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mInts.getValue(line, DIR) >> DIR_SHIFT; 6209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 622d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 6239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public final Directions getLineDirections(int line) { 6249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mObjects.getValue(line, 0); 6259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 627d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 6289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getTopPadding() { 6299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mTopPadding; 6309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 632d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 6339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getBottomPadding() { 6349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mBottomPadding; 6359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 63726d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien /** 63826d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien * @hide 63926d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien */ 64026d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien @Override 64126d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien public int getHyphen(int line) { 64226d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien return mInts.getValue(line, HYPHEN); 64326d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien } 64426d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien 6459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 6469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getEllipsizedWidth() { 6479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mEllipsizedWidth; 6489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6500a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne private static class ChangeWatcher implements TextWatcher, SpanWatcher { 6519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public ChangeWatcher(DynamicLayout layout) { 652d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne mLayout = new WeakReference<DynamicLayout>(layout); 6539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void reflow(CharSequence s, int where, int before, int after) { 656d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne DynamicLayout ml = mLayout.get(); 6579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (ml != null) 6599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ml.reflow(s, where, before, after); 6609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project else if (s instanceof Spannable) 6619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ((Spannable) s).removeSpan(this); 6629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6640a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne public void beforeTextChanged(CharSequence s, int where, int before, int after) { 66533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne // Intentionally empty 6669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6680a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne public void onTextChanged(CharSequence s, int where, int before, int after) { 6699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project reflow(s, where, before, after); 6709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void afterTextChanged(Editable s) { 67333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne // Intentionally empty 6749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void onSpanAdded(Spannable s, Object o, int start, int end) { 6779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (o instanceof UpdateLayout) 6789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project reflow(s, start, end - start, end - start); 6799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void onSpanRemoved(Spannable s, Object o, int start, int end) { 6829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (o instanceof UpdateLayout) 6839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project reflow(s, start, end - start, end - start); 6849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6860a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne public void onSpanChanged(Spannable s, Object o, int start, int end, int nstart, int nend) { 6879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (o instanceof UpdateLayout) { 6889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project reflow(s, start, end - start, end - start); 6899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project reflow(s, nstart, nend - nstart, nend - nstart); 6909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 693d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne private WeakReference<DynamicLayout> mLayout; 6949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 696d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 6979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getEllipsisStart(int line) { 6989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mEllipsizeAt == null) { 6999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 7009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mInts.getValue(line, ELLIPSIS_START); 7039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 705d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 7069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getEllipsisCount(int line) { 7079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mEllipsizeAt == null) { 7089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 7099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mInts.getValue(line, ELLIPSIS_COUNT); 7129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private CharSequence mBase; 7159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private CharSequence mDisplay; 7169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private ChangeWatcher mWatcher; 7179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mIncludePad; 7189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mEllipsize; 7199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mEllipsizedWidth; 7209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private TextUtils.TruncateAt mEllipsizeAt; 72139b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien private int mBreakStrategy; 7229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private PackedIntVector mInts; 7249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private PackedObjectVector<Directions> mObjects; 7259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 726cde6adf45c90ad3fdc94446ede6a228ce264c886Romain Guy /** 72733b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * Value used in mBlockIndices when a block has been created or recycled and indicating that its 72833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * display list needs to be re-created. 72933b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * @hide 73033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne */ 73133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne public static final int INVALID_BLOCK_INDEX = -1; 732157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne // Stores the line numbers of the last line of each block (inclusive) 733157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne private int[] mBlockEndLines; 73433b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne // The indices of this block's display list in TextView's internal display list array or 73533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne // INVALID_BLOCK_INDEX if this block has been invalidated during an edition 73633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne private int[] mBlockIndices; 73733b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne // Number of items actually currently being used in the above 2 arrays 73833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne private int mNumberOfBlocks; 739955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee // The first index of the blocks whose locations are changed 740955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee private int mIndexFirstChangedBlock; 74133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 7429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mTopPadding, mBottomPadding; 7439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 744d3ab692d28018825578ff05832644cfad60233fbRaph Levien private static StaticLayout sStaticLayout = null; 745d3ab692d28018825578ff05832644cfad60233fbRaph Levien private static StaticLayout.Builder sBuilder = null; 7468059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio 747e5ea4403ce58982522554b7ff23f41e6551923c1Romain Guy private static final Object[] sLock = new Object[0]; 7489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int START = 0; 7509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int DIR = START; 7519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int TAB = START; 7529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int TOP = 1; 7539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int DESCENT = 2; 75426d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien private static final int HYPHEN = 3; 75526d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien private static final int COLUMNS_NORMAL = 4; 7569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 75726d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien private static final int ELLIPSIS_START = 4; 75826d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien private static final int ELLIPSIS_COUNT = 5; 75926d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien private static final int COLUMNS_ELLIPSIZE = 6; 7609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int START_MASK = 0x1FFFFFFF; 7629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int DIR_SHIFT = 30; 7639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int TAB_MASK = 0x20000000; 7649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int ELLIPSIS_UNDEFINED = 0x80000000; 7669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 767