DynamicLayout.java revision 776abc24cdd18610232a50b997cce3cffa74609b
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, 82ad0b051b133baf92f199c96a8ac1e81b3393190cFabrice Di Meglio spacingmult, spacingadd, includepad, ellipsize, ellipsizedWidth); 83cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt } 84cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt 85cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt /** 86cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt * Make a layout for the transformed text (password transformation 87cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt * being the primary example of a transformation) 88cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt * that will be updated as the base text is changed. 89cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt * If ellipsize is non-null, the Layout will ellipsize the text 90cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt * down to ellipsizedWidth. 91cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt * * 92cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt * *@hide 93cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt */ 94cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt public DynamicLayout(CharSequence base, CharSequence display, 95cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt TextPaint paint, 96cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt int width, Alignment align, TextDirectionHeuristic textDir, 97cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt float spacingmult, float spacingadd, 98cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt boolean includepad, 99ad0b051b133baf92f199c96a8ac1e81b3393190cFabrice Di Meglio TextUtils.TruncateAt ellipsize, int ellipsizedWidth) { 100cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt super((ellipsize == null) 101cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt ? display 102cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt : (display instanceof Spanned) 103cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt ? new SpannedEllipsizer(display) 1049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project : new Ellipsizer(display), 105cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt paint, width, align, textDir, spacingmult, spacingadd); 1069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBase = base; 1089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mDisplay = display; 1099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (ellipsize != null) { 1119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mInts = new PackedIntVector(COLUMNS_ELLIPSIZE); 1129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mEllipsizedWidth = ellipsizedWidth; 1139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mEllipsizeAt = ellipsize; 1149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 1159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mInts = new PackedIntVector(COLUMNS_NORMAL); 1169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mEllipsizedWidth = width; 1170a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne mEllipsizeAt = null; 1189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mObjects = new PackedObjectVector<Directions>(1); 1219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mIncludePad = includepad; 1239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 1259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This is annoying, but we can't refer to the layout until 1269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * superclass construction is finished, and the superclass 1279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * constructor wants the reference to the display text. 1289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 1299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This will break if the superclass constructor ever actually 1309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * cares about the content instead of just holding the reference. 1319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (ellipsize != null) { 1339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Ellipsizer e = (Ellipsizer) getText(); 1349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project e.mLayout = this; 1369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project e.mWidth = ellipsizedWidth; 1379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project e.mMethod = ellipsize; 1389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mEllipsize = true; 1399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Initial state is a single line with 0 characters (0 to 0), 1429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // with top at 0 and bottom at whatever is natural, and 1439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // undefined ellipsis. 1449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int[] start; 1469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (ellipsize != null) { 1489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project start = new int[COLUMNS_ELLIPSIZE]; 1499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project start[ELLIPSIS_START] = ELLIPSIS_UNDEFINED; 1509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 1519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project start = new int[COLUMNS_NORMAL]; 1529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Directions[] dirs = new Directions[] { DIRS_ALL_LEFT_TO_RIGHT }; 1559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Paint.FontMetricsInt fm = paint.getFontMetricsInt(); 1579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int asc = fm.ascent; 1589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int desc = fm.descent; 1599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project start[DIR] = DIR_LEFT_TO_RIGHT << DIR_SHIFT; 1619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project start[TOP] = 0; 1629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project start[DESCENT] = desc; 1639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mInts.insertAt(0, start); 1649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project start[TOP] = desc - asc; 1669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mInts.insertAt(1, start); 1679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mObjects.insertAt(0, dirs); 1699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Update from 0 characters to whatever the real text is 1719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project reflow(base, 0, 0, base.length()); 1729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (base instanceof Spannable) { 1749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mWatcher == null) 1759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mWatcher = new ChangeWatcher(this); 1769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Strip out any watchers for other DynamicLayouts. 1789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Spannable sp = (Spannable) base; 1799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ChangeWatcher[] spans = sp.getSpans(0, sp.length(), ChangeWatcher.class); 1809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < spans.length; i++) 1819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sp.removeSpan(spans[i]); 1829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sp.setSpan(mWatcher, 0, base.length(), 1849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Spannable.SPAN_INCLUSIVE_INCLUSIVE | 1859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (PRIORITY << Spannable.SPAN_PRIORITY_SHIFT)); 1869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void reflow(CharSequence s, int where, int before, int after) { 1909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (s != mBase) 1919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 1929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project CharSequence text = mDisplay; 1949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int len = text.length(); 1959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // seek back to the start of the paragraph 1979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int find = TextUtils.lastIndexOf(text, '\n', where - 1); 1999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (find < 0) 2009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project find = 0; 2019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project else 2029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project find = find + 1; 2039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project { 2059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int diff = where - find; 2069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project before += diff; 2079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project after += diff; 2089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project where -= diff; 2099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // seek forward to the end of the paragraph 2129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int look = TextUtils.indexOf(text, '\n', where + after); 2149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (look < 0) 2159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project look = len; 2169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project else 2179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project look++; // we want the index after the \n 2189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int change = look - (where + after); 2209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project before += change; 2219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project after += change; 2229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // seek further out to cover anything that is forced to wrap together 2249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (text instanceof Spanned) { 2269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Spanned sp = (Spanned) text; 2279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean again; 2289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project do { 2309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project again = false; 2319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Object[] force = sp.getSpans(where, where + after, 2339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project WrapTogetherSpan.class); 2349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < force.length; i++) { 2369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int st = sp.getSpanStart(force[i]); 2379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int en = sp.getSpanEnd(force[i]); 2389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (st < where) { 2409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project again = true; 2419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int diff = where - st; 2439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project before += diff; 2449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project after += diff; 2459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project where -= diff; 2469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (en > where + after) { 2499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project again = true; 2509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int diff = en - (where + after); 2529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project before += diff; 2539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project after += diff; 2549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } while (again); 2579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // find affected region of old layout 2609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int startline = getLineForOffset(where); 2629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int startv = getLineTop(startline); 2639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int endline = getLineForOffset(where + before); 2659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (where + after == len) 2669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project endline = getLineCount(); 2679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int endv = getLineTop(endline); 2689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean islast = (endline == getLineCount()); 2699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // generate new layout for affected text 2719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project StaticLayout reflowed; 273b724c346e19d63d7ff194b2b06c4a1e0f7bc07b7Amith Yamasani 2749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project synchronized (sLock) { 275b724c346e19d63d7ff194b2b06c4a1e0f7bc07b7Amith Yamasani reflowed = sStaticLayout; 276b724c346e19d63d7ff194b2b06c4a1e0f7bc07b7Amith Yamasani sStaticLayout = null; 2779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 279e5ea4403ce58982522554b7ff23f41e6551923c1Romain Guy if (reflowed == null) { 28009175735c562652be1a1b0dc0f941d36ac4f076aFabrice Di Meglio reflowed = new StaticLayout(null); 281e5ea4403ce58982522554b7ff23f41e6551923c1Romain Guy } else { 282e5ea4403ce58982522554b7ff23f41e6551923c1Romain Guy reflowed.prepare(); 283e5ea4403ce58982522554b7ff23f41e6551923c1Romain Guy } 2849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project reflowed.generate(text, where, where + after, 286d300e75eff0d5e54390400cbd3f80dc4cea8b617Gilles Debunne getPaint(), getWidth(), getTextDirectionHeuristic(), getSpacingMultiplier(), 287d300e75eff0d5e54390400cbd3f80dc4cea8b617Gilles Debunne getSpacingAdd(), false, 288d300e75eff0d5e54390400cbd3f80dc4cea8b617Gilles Debunne true, mEllipsizedWidth, mEllipsizeAt); 2899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int n = reflowed.getLineCount(); 2909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // If the new layout has a blank line at the end, but it is not 2929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // the very end of the buffer, then we already have a line that 2939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // starts there, so disregard the blank line. 2949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 29571afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne if (where + after != len && reflowed.getLineStart(n - 1) == where + after) 2969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project n--; 2979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // remove affected lines from old layout 2999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mInts.deleteAt(startline, endline - startline); 3009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mObjects.deleteAt(startline, endline - startline); 3019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // adjust offsets in layout for new height and offsets 3039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int ht = reflowed.getLineTop(n); 3059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int toppad = 0, botpad = 0; 3069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mIncludePad && startline == 0) { 3089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project toppad = reflowed.getTopPadding(); 3099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTopPadding = toppad; 3109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ht -= toppad; 3119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mIncludePad && islast) { 3139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project botpad = reflowed.getBottomPadding(); 3149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBottomPadding = botpad; 3159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ht += botpad; 3169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mInts.adjustValuesBelow(startline, START, after - before); 3199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mInts.adjustValuesBelow(startline, TOP, startv - endv + ht); 3209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // insert new layout 3229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int[] ints; 3249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mEllipsize) { 3269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ints = new int[COLUMNS_ELLIPSIZE]; 3279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ints[ELLIPSIS_START] = ELLIPSIS_UNDEFINED; 3289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 3299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ints = new int[COLUMNS_NORMAL]; 3309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Directions[] objects = new Directions[1]; 3339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < n; i++) { 3359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ints[START] = reflowed.getLineStart(i) | 3369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (reflowed.getParagraphDirection(i) << DIR_SHIFT) | 3379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (reflowed.getLineContainsTab(i) ? TAB_MASK : 0); 3389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int top = reflowed.getLineTop(i) + startv; 3409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (i > 0) 3419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project top -= toppad; 3429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ints[TOP] = top; 3439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int desc = reflowed.getLineDescent(i); 3459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (i == n - 1) 3469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project desc += botpad; 3479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ints[DESCENT] = desc; 3499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project objects[0] = reflowed.getLineDirections(i); 3509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mEllipsize) { 3529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ints[ELLIPSIS_START] = reflowed.getEllipsisStart(i); 3539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ints[ELLIPSIS_COUNT] = reflowed.getEllipsisCount(i); 3549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mInts.insertAt(startline + i, ints); 3579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mObjects.insertAt(startline + i, objects); 3589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 36071afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne updateBlocks(startline, endline - 1, n); 36171afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne 3629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project synchronized (sLock) { 363b724c346e19d63d7ff194b2b06c4a1e0f7bc07b7Amith Yamasani sStaticLayout = reflowed; 364e5ea4403ce58982522554b7ff23f41e6551923c1Romain Guy reflowed.finish(); 3659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 36833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne /** 36971afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne * Create the initial block structure, cutting the text into blocks of at least 37071afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne * BLOCK_MINIMUM_CHARACTER_SIZE characters, aligned on the ends of paragraphs. 37171afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne */ 37271afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne private void createBlocks() { 37371afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne int offset = BLOCK_MINIMUM_CHARACTER_LENGTH; 37471afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne mNumberOfBlocks = 0; 37571afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne final CharSequence text = mDisplay; 37671afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne 37771afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne while (true) { 37871afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne offset = TextUtils.indexOf(text, '\n', offset); 37971afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne if (offset < 0) { 38071afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne addBlockAtOffset(text.length()); 38171afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne break; 38271afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne } else { 38371afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne addBlockAtOffset(offset); 38471afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne offset += BLOCK_MINIMUM_CHARACTER_LENGTH; 38571afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne } 38671afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne } 38771afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne 38871afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne // mBlockIndices and mBlockEndLines should have the same length 38971afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne mBlockIndices = new int[mBlockEndLines.length]; 39071afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne for (int i = 0; i < mBlockEndLines.length; i++) { 39171afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne mBlockIndices[i] = INVALID_BLOCK_INDEX; 39271afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne } 39371afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne } 39471afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne 39571afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne /** 39671afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne * Create a new block, ending at the specified character offset. 39771afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne * A block will actually be created only if has at least one line, i.e. this offset is 39871afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne * not on the end line of the previous block. 39971afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne */ 40071afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne private void addBlockAtOffset(int offset) { 40171afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne final int line = getLineForOffset(offset); 40271afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne 40371afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne if (mBlockEndLines == null) { 40471afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne // Initial creation of the array, no test on previous block ending line 405776abc24cdd18610232a50b997cce3cffa74609bAdam Lesinski mBlockEndLines = ArrayUtils.newUnpaddedIntArray(1); 40671afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne mBlockEndLines[mNumberOfBlocks] = line; 40771afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne mNumberOfBlocks++; 40871afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne return; 40971afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne } 41071afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne 41171afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne final int previousBlockEndLine = mBlockEndLines[mNumberOfBlocks - 1]; 41271afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne if (line > previousBlockEndLine) { 413776abc24cdd18610232a50b997cce3cffa74609bAdam Lesinski mBlockEndLines = GrowingArrayUtils.append(mBlockEndLines, mNumberOfBlocks, line); 41471afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne mNumberOfBlocks++; 41571afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne } 41671afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne } 41771afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne 41871afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne /** 41933b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * This method is called every time the layout is reflowed after an edition. 42033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * It updates the internal block data structure. The text is split in blocks 42133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * of contiguous lines, with at least one block for the entire text. 42233b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * When a range of lines is edited, new blocks (from 0 to 3 depending on the 42333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * overlap structure) will replace the set of overlapping blocks. 42433b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * Blocks are listed in order and are represented by their ending line number. 42533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * An index is associated to each block (which will be used by display lists), 42633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * this class simply invalidates the index of blocks overlapping a modification. 42733b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * 4281e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne * This method is package private and not private so that it can be tested. 4291e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne * 43033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * @param startLine the first line of the range of modified lines 43133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * @param endLine the last line of the range, possibly equal to startLine, lower 43233b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * than getLineCount() 43333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * @param newLineCount the number of lines that will replace the range, possibly 0 4341e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne * 4351e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne * @hide 43633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne */ 4371e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne void updateBlocks(int startLine, int endLine, int newLineCount) { 43871afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne if (mBlockEndLines == null) { 43971afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne createBlocks(); 44071afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne return; 44171afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne } 44271afc39d68413d125d46ea69e6c9fb077016bb9bGilles Debunne 44333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne int firstBlock = -1; 44433b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne int lastBlock = -1; 44533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne for (int i = 0; i < mNumberOfBlocks; i++) { 446157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne if (mBlockEndLines[i] >= startLine) { 44733b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne firstBlock = i; 44833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne break; 44933b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 45033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 45133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne for (int i = firstBlock; i < mNumberOfBlocks; i++) { 452157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne if (mBlockEndLines[i] >= endLine) { 45333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne lastBlock = i; 45433b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne break; 45533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 45633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 457157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne final int lastBlockEndLine = mBlockEndLines[lastBlock]; 45833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 45933b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne boolean createBlockBefore = startLine > (firstBlock == 0 ? 0 : 460157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne mBlockEndLines[firstBlock - 1] + 1); 46133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne boolean createBlock = newLineCount > 0; 462157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne boolean createBlockAfter = endLine < mBlockEndLines[lastBlock]; 46333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 46433b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne int numAddedBlocks = 0; 46533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne if (createBlockBefore) numAddedBlocks++; 46633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne if (createBlock) numAddedBlocks++; 46733b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne if (createBlockAfter) numAddedBlocks++; 46833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 46933b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne final int numRemovedBlocks = lastBlock - firstBlock + 1; 47033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne final int newNumberOfBlocks = mNumberOfBlocks + numAddedBlocks - numRemovedBlocks; 47133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 47233b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne if (newNumberOfBlocks == 0) { 47333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne // Even when text is empty, there is actually one line and hence one block 474157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne mBlockEndLines[0] = 0; 47533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne mBlockIndices[0] = INVALID_BLOCK_INDEX; 47633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne mNumberOfBlocks = 1; 47733b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne return; 47833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 47933b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 480157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne if (newNumberOfBlocks > mBlockEndLines.length) { 481776abc24cdd18610232a50b997cce3cffa74609bAdam Lesinski int[] blockEndLines = ArrayUtils.newUnpaddedIntArray( 482776abc24cdd18610232a50b997cce3cffa74609bAdam Lesinski Math.max(mBlockEndLines.length * 2, newNumberOfBlocks)); 483776abc24cdd18610232a50b997cce3cffa74609bAdam Lesinski int[] blockIndices = new int[blockEndLines.length]; 484157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne System.arraycopy(mBlockEndLines, 0, blockEndLines, 0, firstBlock); 48533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne System.arraycopy(mBlockIndices, 0, blockIndices, 0, firstBlock); 486157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne System.arraycopy(mBlockEndLines, lastBlock + 1, 487157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne blockEndLines, firstBlock + numAddedBlocks, mNumberOfBlocks - lastBlock - 1); 48833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne System.arraycopy(mBlockIndices, lastBlock + 1, 48933b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne blockIndices, firstBlock + numAddedBlocks, mNumberOfBlocks - lastBlock - 1); 490157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne mBlockEndLines = blockEndLines; 49133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne mBlockIndices = blockIndices; 49233b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } else { 493157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne System.arraycopy(mBlockEndLines, lastBlock + 1, 494157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne mBlockEndLines, firstBlock + numAddedBlocks, mNumberOfBlocks - lastBlock - 1); 49533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne System.arraycopy(mBlockIndices, lastBlock + 1, 49633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne mBlockIndices, firstBlock + numAddedBlocks, mNumberOfBlocks - lastBlock - 1); 49733b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 49833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 49933b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne mNumberOfBlocks = newNumberOfBlocks; 50063b3eb65234c8a8b9224c262442816cc429560efRaph Levien int newFirstChangedBlock; 50133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne final int deltaLines = newLineCount - (endLine - startLine + 1); 502955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee if (deltaLines != 0) { 503955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee // Display list whose index is >= mIndexFirstChangedBlock is valid 504955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee // but it needs to update its drawing location. 50563b3eb65234c8a8b9224c262442816cc429560efRaph Levien newFirstChangedBlock = firstBlock + numAddedBlocks; 50663b3eb65234c8a8b9224c262442816cc429560efRaph Levien for (int i = newFirstChangedBlock; i < mNumberOfBlocks; i++) { 507955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee mBlockEndLines[i] += deltaLines; 508955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee } 509955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee } else { 51063b3eb65234c8a8b9224c262442816cc429560efRaph Levien newFirstChangedBlock = mNumberOfBlocks; 51133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 51263b3eb65234c8a8b9224c262442816cc429560efRaph Levien mIndexFirstChangedBlock = Math.min(mIndexFirstChangedBlock, newFirstChangedBlock); 51333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 51433b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne int blockIndex = firstBlock; 51533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne if (createBlockBefore) { 516157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne mBlockEndLines[blockIndex] = startLine - 1; 51733b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne mBlockIndices[blockIndex] = INVALID_BLOCK_INDEX; 51833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne blockIndex++; 51933b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 52033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 52133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne if (createBlock) { 522157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne mBlockEndLines[blockIndex] = startLine + newLineCount - 1; 52333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne mBlockIndices[blockIndex] = INVALID_BLOCK_INDEX; 52433b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne blockIndex++; 52533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 52633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 52733b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne if (createBlockAfter) { 528157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne mBlockEndLines[blockIndex] = lastBlockEndLine + deltaLines; 52933b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne mBlockIndices[blockIndex] = INVALID_BLOCK_INDEX; 53033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 53133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 53233b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 53333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne /** 5341e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne * This package private method is used for test purposes only 5351e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne * @hide 5361e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne */ 537157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne void setBlocksDataForTest(int[] blockEndLines, int[] blockIndices, int numberOfBlocks) { 538157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne mBlockEndLines = new int[blockEndLines.length]; 5391e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne mBlockIndices = new int[blockIndices.length]; 540157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne System.arraycopy(blockEndLines, 0, mBlockEndLines, 0, blockEndLines.length); 5411e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne System.arraycopy(blockIndices, 0, mBlockIndices, 0, blockIndices.length); 5421e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne mNumberOfBlocks = numberOfBlocks; 5431e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne } 5441e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne 5451e130b2abc051081982b5a793a18a28376c945e4Gilles Debunne /** 54633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * @hide 54733b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne */ 548157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne public int[] getBlockEndLines() { 549157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne return mBlockEndLines; 55033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 55133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 55233b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne /** 55333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * @hide 55433b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne */ 55533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne public int[] getBlockIndices() { 55633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne return mBlockIndices; 55733b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 55833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 55933b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne /** 56033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * @hide 56133b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne */ 56233b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne public int getNumberOfBlocks() { 56333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne return mNumberOfBlocks; 56433b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne } 56533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 566955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee /** 567955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee * @hide 568955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee */ 569955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee public int getIndexFirstChangedBlock() { 570955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee return mIndexFirstChangedBlock; 571955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee } 572955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee 573955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee /** 574955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee * @hide 575955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee */ 576955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee public void setIndexFirstChangedBlock(int i) { 577955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee mIndexFirstChangedBlock = i; 578955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee } 579955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee 580d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 5819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getLineCount() { 5829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mInts.size() - 1; 5839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 585d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 5869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getLineTop(int line) { 5879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mInts.getValue(line, TOP); 5889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 590d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 5919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getLineDescent(int line) { 5929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mInts.getValue(line, DESCENT); 5939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 595d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 5969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getLineStart(int line) { 5979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mInts.getValue(line, START) & START_MASK; 5989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 600d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 6019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean getLineContainsTab(int line) { 6029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (mInts.getValue(line, TAB) & TAB_MASK) != 0; 6039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 605d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 6069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getParagraphDirection(int line) { 6079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mInts.getValue(line, DIR) >> DIR_SHIFT; 6089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 610d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 6119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public final Directions getLineDirections(int line) { 6129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mObjects.getValue(line, 0); 6139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 615d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 6169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getTopPadding() { 6179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mTopPadding; 6189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 620d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 6219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getBottomPadding() { 6229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mBottomPadding; 6239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 6269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getEllipsizedWidth() { 6279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mEllipsizedWidth; 6289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6300a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne private static class ChangeWatcher implements TextWatcher, SpanWatcher { 6319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public ChangeWatcher(DynamicLayout layout) { 632d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne mLayout = new WeakReference<DynamicLayout>(layout); 6339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void reflow(CharSequence s, int where, int before, int after) { 636d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne DynamicLayout ml = mLayout.get(); 6379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (ml != null) 6399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ml.reflow(s, where, before, after); 6409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project else if (s instanceof Spannable) 6419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ((Spannable) s).removeSpan(this); 6429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6440a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne public void beforeTextChanged(CharSequence s, int where, int before, int after) { 64533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne // Intentionally empty 6469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6480a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne public void onTextChanged(CharSequence s, int where, int before, int after) { 6499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project reflow(s, where, before, after); 6509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void afterTextChanged(Editable s) { 65333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne // Intentionally empty 6549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void onSpanAdded(Spannable s, Object o, int start, int end) { 6579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (o instanceof UpdateLayout) 6589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project reflow(s, start, end - start, end - start); 6599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void onSpanRemoved(Spannable s, Object o, int start, int end) { 6629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (o instanceof UpdateLayout) 6639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project reflow(s, start, end - start, end - start); 6649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6660a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne public void onSpanChanged(Spannable s, Object o, int start, int end, int nstart, int nend) { 6679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (o instanceof UpdateLayout) { 6689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project reflow(s, start, end - start, end - start); 6699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project reflow(s, nstart, nend - nstart, nend - nstart); 6709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 673d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne private WeakReference<DynamicLayout> mLayout; 6749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 676d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 6779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getEllipsisStart(int line) { 6789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mEllipsizeAt == null) { 6799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 6809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mInts.getValue(line, ELLIPSIS_START); 6839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 685d6e568c4f3b30431a0086e647f38d24ffd81457aGilles Debunne @Override 6869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getEllipsisCount(int line) { 6879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mEllipsizeAt == null) { 6889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 6899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mInts.getValue(line, ELLIPSIS_COUNT); 6929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private CharSequence mBase; 6959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private CharSequence mDisplay; 6969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private ChangeWatcher mWatcher; 6979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mIncludePad; 6989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mEllipsize; 6999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mEllipsizedWidth; 7009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private TextUtils.TruncateAt mEllipsizeAt; 7019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private PackedIntVector mInts; 7039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private PackedObjectVector<Directions> mObjects; 7049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 705cde6adf45c90ad3fdc94446ede6a228ce264c886Romain Guy /** 70633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * Value used in mBlockIndices when a block has been created or recycled and indicating that its 70733b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * display list needs to be re-created. 70833b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne * @hide 70933b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne */ 71033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne public static final int INVALID_BLOCK_INDEX = -1; 711157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne // Stores the line numbers of the last line of each block (inclusive) 712157aafcbee0eabda798a3be406ccc4200ee86756Gilles Debunne private int[] mBlockEndLines; 71333b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne // The indices of this block's display list in TextView's internal display list array or 71433b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne // INVALID_BLOCK_INDEX if this block has been invalidated during an edition 71533b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne private int[] mBlockIndices; 71633b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne // Number of items actually currently being used in the above 2 arrays 71733b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne private int mNumberOfBlocks; 718955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee // The first index of the blocks whose locations are changed 719955beb2b96a78cf6ee990d0f20bcaf2d22ce608bSangkyu Lee private int mIndexFirstChangedBlock; 72033b7de85b6918b7714641f12f1ba2ff03a344740Gilles Debunne 7219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mTopPadding, mBottomPadding; 7229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 72309175735c562652be1a1b0dc0f941d36ac4f076aFabrice Di Meglio private static StaticLayout sStaticLayout = new StaticLayout(null); 7248059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio 725e5ea4403ce58982522554b7ff23f41e6551923c1Romain Guy private static final Object[] sLock = new Object[0]; 7269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int START = 0; 7289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int DIR = START; 7299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int TAB = START; 7309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int TOP = 1; 7319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int DESCENT = 2; 7329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int COLUMNS_NORMAL = 3; 7339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int ELLIPSIS_START = 3; 7359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int ELLIPSIS_COUNT = 4; 7369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int COLUMNS_ELLIPSIZE = 5; 7379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int START_MASK = 0x1FFFFFFF; 7399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int DIR_SHIFT = 30; 7409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int TAB_MASK = 0x20000000; 7419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int ELLIPSIS_UNDEFINED = 0x80000000; 7439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 744