The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2006 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package android.text; |
| 18 | |
The Android Open Source Project | 1059253 | 2009-03-18 17:39:46 -0700 | [diff] [blame] | 19 | import android.graphics.Bitmap; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 20 | import android.graphics.Paint; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 21 | import android.text.style.LeadingMarginSpan; |
Gilles Debunne | 6611147 | 2010-11-19 11:04:37 -0800 | [diff] [blame] | 22 | import android.text.style.LeadingMarginSpan.LeadingMarginSpan2; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 23 | import android.text.style.LineHeightSpan; |
| 24 | import android.text.style.MetricAffectingSpan; |
Doug Felt | c982f60 | 2010-05-25 11:51:40 -0700 | [diff] [blame] | 25 | import android.text.style.TabStopSpan; |
Fabrice Di Meglio | 8059e090 | 2011-08-10 16:31:58 -0700 | [diff] [blame] | 26 | import android.util.Log; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 27 | |
Doug Felt | cb379120 | 2011-07-07 11:57:48 -0700 | [diff] [blame] | 28 | import com.android.internal.util.ArrayUtils; |
| 29 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 30 | /** |
| 31 | * StaticLayout is a Layout for text that will not be edited after it |
| 32 | * is laid out. Use {@link DynamicLayout} for text that may change. |
| 33 | * <p>This is used by widgets to control text layout. You should not need |
| 34 | * to use this class directly unless you are implementing your own widget |
| 35 | * or custom display object, or would be tempted to call |
Doug Felt | 4e0c5e5 | 2010-03-15 16:56:02 -0700 | [diff] [blame] | 36 | * {@link android.graphics.Canvas#drawText(java.lang.CharSequence, int, int, |
| 37 | * float, float, android.graphics.Paint) |
| 38 | * Canvas.drawText()} directly.</p> |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 39 | */ |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 40 | public class StaticLayout extends Layout { |
| 41 | |
Fabrice Di Meglio | 8059e090 | 2011-08-10 16:31:58 -0700 | [diff] [blame] | 42 | static final String TAG = "StaticLayout"; |
| 43 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 44 | public StaticLayout(CharSequence source, TextPaint paint, |
| 45 | int width, |
| 46 | Alignment align, float spacingmult, float spacingadd, |
| 47 | boolean includepad) { |
| 48 | this(source, 0, source.length(), paint, width, align, |
| 49 | spacingmult, spacingadd, includepad); |
| 50 | } |
| 51 | |
Doug Felt | cb379120 | 2011-07-07 11:57:48 -0700 | [diff] [blame] | 52 | /** |
| 53 | * @hide |
| 54 | */ |
| 55 | public StaticLayout(CharSequence source, TextPaint paint, |
| 56 | int width, Alignment align, TextDirectionHeuristic textDir, |
| 57 | float spacingmult, float spacingadd, |
| 58 | boolean includepad) { |
| 59 | this(source, 0, source.length(), paint, width, align, textDir, |
| 60 | spacingmult, spacingadd, includepad); |
| 61 | } |
| 62 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 63 | public StaticLayout(CharSequence source, int bufstart, int bufend, |
| 64 | TextPaint paint, int outerwidth, |
| 65 | Alignment align, |
| 66 | float spacingmult, float spacingadd, |
| 67 | boolean includepad) { |
| 68 | this(source, bufstart, bufend, paint, outerwidth, align, |
| 69 | spacingmult, spacingadd, includepad, null, 0); |
| 70 | } |
| 71 | |
Doug Felt | cb379120 | 2011-07-07 11:57:48 -0700 | [diff] [blame] | 72 | /** |
| 73 | * @hide |
| 74 | */ |
| 75 | public StaticLayout(CharSequence source, int bufstart, int bufend, |
| 76 | TextPaint paint, int outerwidth, |
| 77 | Alignment align, TextDirectionHeuristic textDir, |
| 78 | float spacingmult, float spacingadd, |
| 79 | boolean includepad) { |
| 80 | this(source, bufstart, bufend, paint, outerwidth, align, textDir, |
Fabrice Di Meglio | 8059e090 | 2011-08-10 16:31:58 -0700 | [diff] [blame] | 81 | spacingmult, spacingadd, includepad, null, 0, Integer.MAX_VALUE); |
Doug Felt | cb379120 | 2011-07-07 11:57:48 -0700 | [diff] [blame] | 82 | } |
| 83 | |
| 84 | public StaticLayout(CharSequence source, int bufstart, int bufend, |
| 85 | TextPaint paint, int outerwidth, |
| 86 | Alignment align, |
| 87 | float spacingmult, float spacingadd, |
| 88 | boolean includepad, |
| 89 | TextUtils.TruncateAt ellipsize, int ellipsizedWidth) { |
| 90 | this(source, bufstart, bufend, paint, outerwidth, align, |
| 91 | TextDirectionHeuristics.FIRSTSTRONG_LTR, |
Fabrice Di Meglio | 8059e090 | 2011-08-10 16:31:58 -0700 | [diff] [blame] | 92 | spacingmult, spacingadd, includepad, ellipsize, ellipsizedWidth, Integer.MAX_VALUE); |
Doug Felt | cb379120 | 2011-07-07 11:57:48 -0700 | [diff] [blame] | 93 | } |
| 94 | |
| 95 | /** |
| 96 | * @hide |
| 97 | */ |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 98 | public StaticLayout(CharSequence source, int bufstart, int bufend, |
| 99 | TextPaint paint, int outerwidth, |
Doug Felt | cb379120 | 2011-07-07 11:57:48 -0700 | [diff] [blame] | 100 | Alignment align, TextDirectionHeuristic textDir, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 101 | float spacingmult, float spacingadd, |
| 102 | boolean includepad, |
Fabrice Di Meglio | 8059e090 | 2011-08-10 16:31:58 -0700 | [diff] [blame] | 103 | TextUtils.TruncateAt ellipsize, int ellipsizedWidth, int maxLines) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 104 | super((ellipsize == null) |
Doug Felt | 4e0c5e5 | 2010-03-15 16:56:02 -0700 | [diff] [blame] | 105 | ? source |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 106 | : (source instanceof Spanned) |
| 107 | ? new SpannedEllipsizer(source) |
| 108 | : new Ellipsizer(source), |
Doug Felt | cb379120 | 2011-07-07 11:57:48 -0700 | [diff] [blame] | 109 | paint, outerwidth, align, textDir, spacingmult, spacingadd); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 110 | |
| 111 | /* |
| 112 | * This is annoying, but we can't refer to the layout until |
| 113 | * superclass construction is finished, and the superclass |
| 114 | * constructor wants the reference to the display text. |
Doug Felt | 4e0c5e5 | 2010-03-15 16:56:02 -0700 | [diff] [blame] | 115 | * |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 116 | * This will break if the superclass constructor ever actually |
| 117 | * cares about the content instead of just holding the reference. |
| 118 | */ |
| 119 | if (ellipsize != null) { |
| 120 | Ellipsizer e = (Ellipsizer) getText(); |
| 121 | |
| 122 | e.mLayout = this; |
| 123 | e.mWidth = ellipsizedWidth; |
| 124 | e.mMethod = ellipsize; |
| 125 | mEllipsizedWidth = ellipsizedWidth; |
| 126 | |
| 127 | mColumns = COLUMNS_ELLIPSIZE; |
| 128 | } else { |
| 129 | mColumns = COLUMNS_NORMAL; |
| 130 | mEllipsizedWidth = outerwidth; |
| 131 | } |
| 132 | |
| 133 | mLines = new int[ArrayUtils.idealIntArraySize(2 * mColumns)]; |
| 134 | mLineDirections = new Directions[ |
| 135 | ArrayUtils.idealIntArraySize(2 * mColumns)]; |
Fabrice Di Meglio | 8059e090 | 2011-08-10 16:31:58 -0700 | [diff] [blame] | 136 | mMaximumVisibleLineCount = maxLines; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 137 | |
Doug Felt | e8e45f2 | 2010-03-29 14:58:40 -0700 | [diff] [blame] | 138 | mMeasured = MeasuredText.obtain(); |
| 139 | |
Gilles Debunne | d300e75 | 2011-10-17 13:37:36 -0700 | [diff] [blame] | 140 | generate(source, bufstart, bufend, paint, outerwidth, textDir, spacingmult, |
| 141 | spacingadd, includepad, includepad, ellipsizedWidth, |
| 142 | ellipsize); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 143 | |
Doug Felt | e8e45f2 | 2010-03-29 14:58:40 -0700 | [diff] [blame] | 144 | mMeasured = MeasuredText.recycle(mMeasured); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 145 | mFontMetricsInt = null; |
| 146 | } |
| 147 | |
Fabrice Di Meglio | 8059e090 | 2011-08-10 16:31:58 -0700 | [diff] [blame] | 148 | /* package */ StaticLayout(CharSequence text) { |
| 149 | super(text, null, 0, null, 0, 0); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 150 | |
| 151 | mColumns = COLUMNS_ELLIPSIZE; |
| 152 | mLines = new int[ArrayUtils.idealIntArraySize(2 * mColumns)]; |
Gilles Debunne | 8154149 | 2012-06-26 16:05:15 -0700 | [diff] [blame] | 153 | mLineDirections = new Directions[ArrayUtils.idealIntArraySize(2 * mColumns)]; |
| 154 | // FIXME This is never recycled |
Doug Felt | e8e45f2 | 2010-03-29 14:58:40 -0700 | [diff] [blame] | 155 | mMeasured = MeasuredText.obtain(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 156 | } |
| 157 | |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 158 | /* package */ void generate(CharSequence source, int bufStart, int bufEnd, |
| 159 | TextPaint paint, int outerWidth, |
Gilles Debunne | d300e75 | 2011-10-17 13:37:36 -0700 | [diff] [blame] | 160 | TextDirectionHeuristic textDir, float spacingmult, |
| 161 | float spacingadd, boolean includepad, |
| 162 | boolean trackpad, float ellipsizedWidth, |
| 163 | TextUtils.TruncateAt ellipsize) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 164 | mLineCount = 0; |
| 165 | |
| 166 | int v = 0; |
| 167 | boolean needMultiply = (spacingmult != 1 || spacingadd != 0); |
| 168 | |
| 169 | Paint.FontMetricsInt fm = mFontMetricsInt; |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 170 | int[] chooseHtv = null; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 171 | |
Doug Felt | e8e45f2 | 2010-03-29 14:58:40 -0700 | [diff] [blame] | 172 | MeasuredText measured = mMeasured; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 173 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 174 | Spanned spanned = null; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 175 | if (source instanceof Spanned) |
| 176 | spanned = (Spanned) source; |
| 177 | |
| 178 | int DEFAULT_DIR = DIR_LEFT_TO_RIGHT; // XXX |
| 179 | |
Doug Felt | e8e45f2 | 2010-03-29 14:58:40 -0700 | [diff] [blame] | 180 | int paraEnd; |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 181 | for (int paraStart = bufStart; paraStart <= bufEnd; paraStart = paraEnd) { |
| 182 | paraEnd = TextUtils.indexOf(source, CHAR_NEW_LINE, paraStart, bufEnd); |
Doug Felt | e8e45f2 | 2010-03-29 14:58:40 -0700 | [diff] [blame] | 183 | if (paraEnd < 0) |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 184 | paraEnd = bufEnd; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 185 | else |
Doug Felt | e8e45f2 | 2010-03-29 14:58:40 -0700 | [diff] [blame] | 186 | paraEnd++; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 187 | |
Doug Felt | c982f60 | 2010-05-25 11:51:40 -0700 | [diff] [blame] | 188 | int firstWidthLineLimit = mLineCount + 1; |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 189 | int firstWidth = outerWidth; |
| 190 | int restWidth = outerWidth; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 191 | |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 192 | LineHeightSpan[] chooseHt = null; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 193 | |
| 194 | if (spanned != null) { |
Eric Fischer | 74d31ef | 2010-08-05 15:29:36 -0700 | [diff] [blame] | 195 | LeadingMarginSpan[] sp = getParagraphSpans(spanned, paraStart, paraEnd, |
Doug Felt | e8e45f2 | 2010-03-29 14:58:40 -0700 | [diff] [blame] | 196 | LeadingMarginSpan.class); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 197 | for (int i = 0; i < sp.length; i++) { |
Mark Wagner | 7b5676e | 2009-10-16 11:44:23 -0700 | [diff] [blame] | 198 | LeadingMarginSpan lms = sp[i]; |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 199 | firstWidth -= sp[i].getLeadingMargin(true); |
| 200 | restWidth -= sp[i].getLeadingMargin(false); |
Doug Felt | cb379120 | 2011-07-07 11:57:48 -0700 | [diff] [blame] | 201 | |
Doug Felt | c982f60 | 2010-05-25 11:51:40 -0700 | [diff] [blame] | 202 | // LeadingMarginSpan2 is odd. The count affects all |
| 203 | // leading margin spans, not just this particular one, |
| 204 | // and start from the top of the span, not the top of the |
| 205 | // paragraph. |
| 206 | if (lms instanceof LeadingMarginSpan2) { |
| 207 | LeadingMarginSpan2 lms2 = (LeadingMarginSpan2) lms; |
| 208 | int lmsFirstLine = getLineForOffset(spanned.getSpanStart(lms2)); |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 209 | firstWidthLineLimit = lmsFirstLine + lms2.getLeadingMarginLineCount(); |
Mark Wagner | 7b5676e | 2009-10-16 11:44:23 -0700 | [diff] [blame] | 210 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 211 | } |
| 212 | |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 213 | chooseHt = getParagraphSpans(spanned, paraStart, paraEnd, LineHeightSpan.class); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 214 | |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 215 | if (chooseHt.length != 0) { |
| 216 | if (chooseHtv == null || |
| 217 | chooseHtv.length < chooseHt.length) { |
| 218 | chooseHtv = new int[ArrayUtils.idealIntArraySize( |
| 219 | chooseHt.length)]; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 220 | } |
| 221 | |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 222 | for (int i = 0; i < chooseHt.length; i++) { |
| 223 | int o = spanned.getSpanStart(chooseHt[i]); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 224 | |
Doug Felt | e8e45f2 | 2010-03-29 14:58:40 -0700 | [diff] [blame] | 225 | if (o < paraStart) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 226 | // starts in this layout, before the |
| 227 | // current paragraph |
| 228 | |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 229 | chooseHtv[i] = getLineTop(getLineForOffset(o)); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 230 | } else { |
| 231 | // starts in this paragraph |
| 232 | |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 233 | chooseHtv[i] = v; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 234 | } |
| 235 | } |
| 236 | } |
| 237 | } |
| 238 | |
Doug Felt | cb379120 | 2011-07-07 11:57:48 -0700 | [diff] [blame] | 239 | measured.setPara(source, paraStart, paraEnd, textDir); |
Doug Felt | e8e45f2 | 2010-03-29 14:58:40 -0700 | [diff] [blame] | 240 | char[] chs = measured.mChars; |
| 241 | float[] widths = measured.mWidths; |
| 242 | byte[] chdirs = measured.mLevels; |
| 243 | int dir = measured.mDir; |
| 244 | boolean easy = measured.mEasy; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 245 | |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 246 | int width = firstWidth; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 247 | |
| 248 | float w = 0; |
Gilles Debunne | cd943a7 | 2012-06-07 17:54:47 -0700 | [diff] [blame] | 249 | // here is the offset of the starting character of the line we are currently measuring |
Doug Felt | e8e45f2 | 2010-03-29 14:58:40 -0700 | [diff] [blame] | 250 | int here = paraStart; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 251 | |
Gilles Debunne | cd943a7 | 2012-06-07 17:54:47 -0700 | [diff] [blame] | 252 | // ok is a character offset located after a word separator (space, tab, number...) where |
| 253 | // we would prefer to cut the current line. Equals to here when no such break was found. |
Doug Felt | e8e45f2 | 2010-03-29 14:58:40 -0700 | [diff] [blame] | 254 | int ok = paraStart; |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 255 | float okWidth = w; |
| 256 | int okAscent = 0, okDescent = 0, okTop = 0, okBottom = 0; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 257 | |
Gilles Debunne | cd943a7 | 2012-06-07 17:54:47 -0700 | [diff] [blame] | 258 | // fit is a character offset such that the [here, fit[ range fits in the allowed width. |
| 259 | // We will cut the line there if no ok position is found. |
Doug Felt | e8e45f2 | 2010-03-29 14:58:40 -0700 | [diff] [blame] | 260 | int fit = paraStart; |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 261 | float fitWidth = w; |
| 262 | int fitAscent = 0, fitDescent = 0, fitTop = 0, fitBottom = 0; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 263 | |
Doug Felt | c982f60 | 2010-05-25 11:51:40 -0700 | [diff] [blame] | 264 | boolean hasTabOrEmoji = false; |
| 265 | boolean hasTab = false; |
| 266 | TabStops tabStops = null; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 267 | |
Gilles Debunne | cd943a7 | 2012-06-07 17:54:47 -0700 | [diff] [blame] | 268 | for (int spanStart = paraStart, spanEnd; spanStart < paraEnd; spanStart = spanEnd) { |
Doug Felt | e8e45f2 | 2010-03-29 14:58:40 -0700 | [diff] [blame] | 269 | |
Gilles Debunne | cd943a7 | 2012-06-07 17:54:47 -0700 | [diff] [blame] | 270 | if (spanned == null) { |
| 271 | spanEnd = paraEnd; |
Doug Felt | 2324188 | 2010-06-02 14:41:06 -0700 | [diff] [blame] | 272 | int spanLen = spanEnd - spanStart; |
Gilles Debunne | cd943a7 | 2012-06-07 17:54:47 -0700 | [diff] [blame] | 273 | measured.addStyleRun(paint, spanLen, fm); |
| 274 | } else { |
| 275 | spanEnd = spanned.nextSpanTransition(spanStart, paraEnd, |
| 276 | MetricAffectingSpan.class); |
| 277 | int spanLen = spanEnd - spanStart; |
| 278 | MetricAffectingSpan[] spans = |
Doug Felt | 2324188 | 2010-06-02 14:41:06 -0700 | [diff] [blame] | 279 | spanned.getSpans(spanStart, spanEnd, MetricAffectingSpan.class); |
Gilles Debunne | cd943a7 | 2012-06-07 17:54:47 -0700 | [diff] [blame] | 280 | spans = TextUtils.removeEmptySpans(spans, spanned, MetricAffectingSpan.class); |
| 281 | measured.addStyleRun(paint, spans, spanLen, fm); |
Doug Felt | 2324188 | 2010-06-02 14:41:06 -0700 | [diff] [blame] | 282 | } |
| 283 | |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 284 | int fmTop = fm.top; |
| 285 | int fmBottom = fm.bottom; |
| 286 | int fmAscent = fm.ascent; |
| 287 | int fmDescent = fm.descent; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 288 | |
Doug Felt | e8e45f2 | 2010-03-29 14:58:40 -0700 | [diff] [blame] | 289 | for (int j = spanStart; j < spanEnd; j++) { |
| 290 | char c = chs[j - paraStart]; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 291 | |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 292 | if (c == CHAR_NEW_LINE) { |
Gilles Debunne | 6611147 | 2010-11-19 11:04:37 -0800 | [diff] [blame] | 293 | // intentionally left empty |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 294 | } else if (c == CHAR_TAB) { |
Doug Felt | c982f60 | 2010-05-25 11:51:40 -0700 | [diff] [blame] | 295 | if (hasTab == false) { |
| 296 | hasTab = true; |
| 297 | hasTabOrEmoji = true; |
Kenny Root | 24ca454 | 2010-06-22 23:46:35 -0700 | [diff] [blame] | 298 | if (spanned != null) { |
| 299 | // First tab this para, check for tabstops |
Eric Fischer | 74d31ef | 2010-08-05 15:29:36 -0700 | [diff] [blame] | 300 | TabStopSpan[] spans = getParagraphSpans(spanned, paraStart, |
Kenny Root | 24ca454 | 2010-06-22 23:46:35 -0700 | [diff] [blame] | 301 | paraEnd, TabStopSpan.class); |
| 302 | if (spans.length > 0) { |
| 303 | tabStops = new TabStops(TAB_INCREMENT, spans); |
| 304 | } |
Doug Felt | c982f60 | 2010-05-25 11:51:40 -0700 | [diff] [blame] | 305 | } |
| 306 | } |
| 307 | if (tabStops != null) { |
| 308 | w = tabStops.nextTab(w); |
| 309 | } else { |
| 310 | w = TabStops.nextDefaultStop(w, TAB_INCREMENT); |
| 311 | } |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 312 | } else if (c >= CHAR_FIRST_HIGH_SURROGATE && c <= CHAR_LAST_LOW_SURROGATE |
| 313 | && j + 1 < spanEnd) { |
Doug Felt | e8e45f2 | 2010-03-29 14:58:40 -0700 | [diff] [blame] | 314 | int emoji = Character.codePointAt(chs, j - paraStart); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 315 | |
The Android Open Source Project | 1059253 | 2009-03-18 17:39:46 -0700 | [diff] [blame] | 316 | if (emoji >= MIN_EMOJI && emoji <= MAX_EMOJI) { |
Gilles Debunne | 0a4db3c | 2011-01-14 12:12:04 -0800 | [diff] [blame] | 317 | Bitmap bm = EMOJI_FACTORY.getBitmapFromAndroidPua(emoji); |
The Android Open Source Project | 1059253 | 2009-03-18 17:39:46 -0700 | [diff] [blame] | 318 | |
| 319 | if (bm != null) { |
Eric Fischer | 423f0e4 | 2009-03-27 18:04:12 -0700 | [diff] [blame] | 320 | Paint whichPaint; |
| 321 | |
| 322 | if (spanned == null) { |
| 323 | whichPaint = paint; |
| 324 | } else { |
| 325 | whichPaint = mWorkPaint; |
| 326 | } |
| 327 | |
Gilles Debunne | d300e75 | 2011-10-17 13:37:36 -0700 | [diff] [blame] | 328 | float wid = bm.getWidth() * -whichPaint.ascent() / bm.getHeight(); |
Eric Fischer | 423f0e4 | 2009-03-27 18:04:12 -0700 | [diff] [blame] | 329 | |
| 330 | w += wid; |
Doug Felt | c982f60 | 2010-05-25 11:51:40 -0700 | [diff] [blame] | 331 | hasTabOrEmoji = true; |
The Android Open Source Project | 1059253 | 2009-03-18 17:39:46 -0700 | [diff] [blame] | 332 | j++; |
| 333 | } else { |
Doug Felt | e8e45f2 | 2010-03-29 14:58:40 -0700 | [diff] [blame] | 334 | w += widths[j - paraStart]; |
The Android Open Source Project | 1059253 | 2009-03-18 17:39:46 -0700 | [diff] [blame] | 335 | } |
| 336 | } else { |
Doug Felt | e8e45f2 | 2010-03-29 14:58:40 -0700 | [diff] [blame] | 337 | w += widths[j - paraStart]; |
The Android Open Source Project | 1059253 | 2009-03-18 17:39:46 -0700 | [diff] [blame] | 338 | } |
| 339 | } else { |
Doug Felt | e8e45f2 | 2010-03-29 14:58:40 -0700 | [diff] [blame] | 340 | w += widths[j - paraStart]; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 341 | } |
| 342 | |
Raph Levien | 8d087c3 | 2013-03-29 09:25:48 -0700 | [diff] [blame] | 343 | boolean isSpaceOrTab = c == CHAR_SPACE || c == CHAR_TAB || c == CHAR_ZWSP; |
Gilles Debunne | 8154149 | 2012-06-26 16:05:15 -0700 | [diff] [blame] | 344 | |
| 345 | if (w <= width || isSpaceOrTab) { |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 346 | fitWidth = w; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 347 | fit = j + 1; |
| 348 | |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 349 | if (fmTop < fitTop) |
| 350 | fitTop = fmTop; |
| 351 | if (fmAscent < fitAscent) |
| 352 | fitAscent = fmAscent; |
| 353 | if (fmDescent > fitDescent) |
| 354 | fitDescent = fmDescent; |
| 355 | if (fmBottom > fitBottom) |
| 356 | fitBottom = fmBottom; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 357 | |
Gilles Debunne | 8154149 | 2012-06-26 16:05:15 -0700 | [diff] [blame] | 358 | // From the Unicode Line Breaking Algorithm (at least approximately) |
| 359 | boolean isLineBreak = isSpaceOrTab || |
Gilles Debunne | 8154149 | 2012-06-26 16:05:15 -0700 | [diff] [blame] | 360 | // / is class SY and - is class HY, except when followed by a digit |
| 361 | ((c == CHAR_SLASH || c == CHAR_HYPHEN) && |
| 362 | (j + 1 >= spanEnd || !Character.isDigit(chs[j + 1 - paraStart]))) || |
| 363 | // Ideographs are class ID: breakpoints when adjacent, except for NS |
| 364 | // (non-starters), which can be broken after but not before |
| 365 | (c >= CHAR_FIRST_CJK && isIdeographic(c, true) && |
| 366 | j + 1 < spanEnd && isIdeographic(chs[j + 1 - paraStart], false)); |
| 367 | |
| 368 | if (isLineBreak) { |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 369 | okWidth = w; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 370 | ok = j + 1; |
| 371 | |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 372 | if (fitTop < okTop) |
| 373 | okTop = fitTop; |
| 374 | if (fitAscent < okAscent) |
| 375 | okAscent = fitAscent; |
| 376 | if (fitDescent > okDescent) |
| 377 | okDescent = fitDescent; |
| 378 | if (fitBottom > okBottom) |
| 379 | okBottom = fitBottom; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 380 | } |
Gilles Debunne | 4cf435d | 2011-01-04 15:35:29 -0800 | [diff] [blame] | 381 | } else { |
Gilles Debunne | d300e75 | 2011-10-17 13:37:36 -0700 | [diff] [blame] | 382 | final boolean moreChars = (j + 1 < spanEnd); |
| 383 | int endPos; |
| 384 | int above, below, top, bottom; |
| 385 | float currentTextWidth; |
Gilles Debunne | 32ea4ff | 2010-12-21 11:28:34 -0800 | [diff] [blame] | 386 | |
Gilles Debunne | d300e75 | 2011-10-17 13:37:36 -0700 | [diff] [blame] | 387 | if (ok != here) { |
Gilles Debunne | d300e75 | 2011-10-17 13:37:36 -0700 | [diff] [blame] | 388 | endPos = ok; |
| 389 | above = okAscent; |
| 390 | below = okDescent; |
| 391 | top = okTop; |
| 392 | bottom = okBottom; |
| 393 | currentTextWidth = okWidth; |
| 394 | } else if (fit != here) { |
| 395 | endPos = fit; |
| 396 | above = fitAscent; |
| 397 | below = fitDescent; |
| 398 | top = fitTop; |
| 399 | bottom = fitBottom; |
| 400 | currentTextWidth = fitWidth; |
| 401 | } else { |
| 402 | endPos = here + 1; |
| 403 | above = fm.ascent; |
| 404 | below = fm.descent; |
| 405 | top = fm.top; |
| 406 | bottom = fm.bottom; |
| 407 | currentTextWidth = widths[here - paraStart]; |
| 408 | } |
| 409 | |
| 410 | v = out(source, here, endPos, |
| 411 | above, below, top, bottom, |
| 412 | v, spacingmult, spacingadd, chooseHt,chooseHtv, fm, hasTabOrEmoji, |
| 413 | needMultiply, chdirs, dir, easy, bufEnd, includepad, trackpad, |
| 414 | chs, widths, paraStart, ellipsize, ellipsizedWidth, |
| 415 | currentTextWidth, paint, moreChars); |
Gilles Debunne | cd943a7 | 2012-06-07 17:54:47 -0700 | [diff] [blame] | 416 | |
Gilles Debunne | d300e75 | 2011-10-17 13:37:36 -0700 | [diff] [blame] | 417 | here = endPos; |
Gilles Debunne | cd943a7 | 2012-06-07 17:54:47 -0700 | [diff] [blame] | 418 | j = here - 1; // restart j-span loop from here, compensating for the j++ |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 419 | ok = fit = here; |
| 420 | w = 0; |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 421 | fitAscent = fitDescent = fitTop = fitBottom = 0; |
| 422 | okAscent = okDescent = okTop = okBottom = 0; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 423 | |
Doug Felt | c982f60 | 2010-05-25 11:51:40 -0700 | [diff] [blame] | 424 | if (--firstWidthLineLimit <= 0) { |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 425 | width = restWidth; |
Mark Wagner | 7b5676e | 2009-10-16 11:44:23 -0700 | [diff] [blame] | 426 | } |
Gilles Debunne | cd943a7 | 2012-06-07 17:54:47 -0700 | [diff] [blame] | 427 | |
| 428 | if (here < spanStart) { |
| 429 | // The text was cut before the beginning of the current span range. |
| 430 | // Exit the span loop, and get spanStart to start over from here. |
| 431 | measured.setPos(here); |
| 432 | spanEnd = here; |
| 433 | break; |
| 434 | } |
Gilles Debunne | 8154149 | 2012-06-26 16:05:15 -0700 | [diff] [blame] | 435 | |
| 436 | if (mLineCount >= mMaximumVisibleLineCount) { |
| 437 | break; |
| 438 | } |
Fabrice Di Meglio | 8059e090 | 2011-08-10 16:31:58 -0700 | [diff] [blame] | 439 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 440 | } |
| 441 | } |
| 442 | |
Fabrice Di Meglio | ad0b051 | 2011-10-04 17:21:26 -0700 | [diff] [blame] | 443 | if (paraEnd != here && mLineCount < mMaximumVisibleLineCount) { |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 444 | if ((fitTop | fitBottom | fitDescent | fitAscent) == 0) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 445 | paint.getFontMetricsInt(fm); |
| 446 | |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 447 | fitTop = fm.top; |
| 448 | fitBottom = fm.bottom; |
| 449 | fitAscent = fm.ascent; |
| 450 | fitDescent = fm.descent; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 451 | } |
| 452 | |
| 453 | // Log.e("text", "output rest " + here + " to " + end); |
| 454 | |
| 455 | v = out(source, |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 456 | here, paraEnd, fitAscent, fitDescent, |
| 457 | fitTop, fitBottom, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 458 | v, |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 459 | spacingmult, spacingadd, chooseHt, |
| 460 | chooseHtv, fm, hasTabOrEmoji, |
Gilles Debunne | d300e75 | 2011-10-17 13:37:36 -0700 | [diff] [blame] | 461 | needMultiply, chdirs, dir, easy, bufEnd, |
| 462 | includepad, trackpad, chs, |
| 463 | widths, paraStart, ellipsize, |
| 464 | ellipsizedWidth, w, paint, paraEnd != bufEnd); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 465 | } |
| 466 | |
Doug Felt | e8e45f2 | 2010-03-29 14:58:40 -0700 | [diff] [blame] | 467 | paraStart = paraEnd; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 468 | |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 469 | if (paraEnd == bufEnd) |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 470 | break; |
| 471 | } |
| 472 | |
Fabrice Di Meglio | 8059e090 | 2011-08-10 16:31:58 -0700 | [diff] [blame] | 473 | if ((bufEnd == bufStart || source.charAt(bufEnd - 1) == CHAR_NEW_LINE) && |
Fabrice Di Meglio | ad0b051 | 2011-10-04 17:21:26 -0700 | [diff] [blame] | 474 | mLineCount < mMaximumVisibleLineCount) { |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 475 | // Log.e("text", "output last " + bufEnd); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 476 | |
Fabrice Di Meglio | e631889 | 2013-06-18 20:03:41 -0700 | [diff] [blame] | 477 | measured.setPara(source, bufStart, bufEnd, textDir); |
| 478 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 479 | paint.getFontMetricsInt(fm); |
| 480 | |
| 481 | v = out(source, |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 482 | bufEnd, bufEnd, fm.ascent, fm.descent, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 483 | fm.top, fm.bottom, |
| 484 | v, |
| 485 | spacingmult, spacingadd, null, |
| 486 | null, fm, false, |
Fabrice Di Meglio | e631889 | 2013-06-18 20:03:41 -0700 | [diff] [blame] | 487 | needMultiply, measured.mLevels, measured.mDir, measured.mEasy, bufEnd, |
Gilles Debunne | d300e75 | 2011-10-17 13:37:36 -0700 | [diff] [blame] | 488 | includepad, trackpad, null, |
| 489 | null, bufStart, ellipsize, |
| 490 | ellipsizedWidth, 0, paint, false); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 491 | } |
| 492 | } |
| 493 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 494 | /** |
| 495 | * Returns true if the specified character is one of those specified |
| 496 | * as being Ideographic (class ID) by the Unicode Line Breaking Algorithm |
| 497 | * (http://www.unicode.org/unicode/reports/tr14/), and is therefore OK |
| 498 | * to break between a pair of. |
Eric Fischer | 549d724 | 2009-03-31 14:19:47 -0700 | [diff] [blame] | 499 | * |
| 500 | * @param includeNonStarters also return true for category NS |
| 501 | * (non-starters), which can be broken |
| 502 | * after but not before. |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 503 | */ |
Eric Fischer | 549d724 | 2009-03-31 14:19:47 -0700 | [diff] [blame] | 504 | private static final boolean isIdeographic(char c, boolean includeNonStarters) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 505 | if (c >= '\u2E80' && c <= '\u2FFF') { |
| 506 | return true; // CJK, KANGXI RADICALS, DESCRIPTION SYMBOLS |
| 507 | } |
| 508 | if (c == '\u3000') { |
| 509 | return true; // IDEOGRAPHIC SPACE |
| 510 | } |
| 511 | if (c >= '\u3040' && c <= '\u309F') { |
Eric Fischer | 549d724 | 2009-03-31 14:19:47 -0700 | [diff] [blame] | 512 | if (!includeNonStarters) { |
| 513 | switch (c) { |
| 514 | case '\u3041': // # HIRAGANA LETTER SMALL A |
| 515 | case '\u3043': // # HIRAGANA LETTER SMALL I |
| 516 | case '\u3045': // # HIRAGANA LETTER SMALL U |
| 517 | case '\u3047': // # HIRAGANA LETTER SMALL E |
| 518 | case '\u3049': // # HIRAGANA LETTER SMALL O |
| 519 | case '\u3063': // # HIRAGANA LETTER SMALL TU |
| 520 | case '\u3083': // # HIRAGANA LETTER SMALL YA |
| 521 | case '\u3085': // # HIRAGANA LETTER SMALL YU |
| 522 | case '\u3087': // # HIRAGANA LETTER SMALL YO |
| 523 | case '\u308E': // # HIRAGANA LETTER SMALL WA |
| 524 | case '\u3095': // # HIRAGANA LETTER SMALL KA |
| 525 | case '\u3096': // # HIRAGANA LETTER SMALL KE |
| 526 | case '\u309B': // # KATAKANA-HIRAGANA VOICED SOUND MARK |
| 527 | case '\u309C': // # KATAKANA-HIRAGANA SEMI-VOICED SOUND MARK |
| 528 | case '\u309D': // # HIRAGANA ITERATION MARK |
| 529 | case '\u309E': // # HIRAGANA VOICED ITERATION MARK |
| 530 | return false; |
| 531 | } |
| 532 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 533 | return true; // Hiragana (except small characters) |
| 534 | } |
| 535 | if (c >= '\u30A0' && c <= '\u30FF') { |
Eric Fischer | 549d724 | 2009-03-31 14:19:47 -0700 | [diff] [blame] | 536 | if (!includeNonStarters) { |
| 537 | switch (c) { |
| 538 | case '\u30A0': // # KATAKANA-HIRAGANA DOUBLE HYPHEN |
| 539 | case '\u30A1': // # KATAKANA LETTER SMALL A |
| 540 | case '\u30A3': // # KATAKANA LETTER SMALL I |
| 541 | case '\u30A5': // # KATAKANA LETTER SMALL U |
| 542 | case '\u30A7': // # KATAKANA LETTER SMALL E |
| 543 | case '\u30A9': // # KATAKANA LETTER SMALL O |
| 544 | case '\u30C3': // # KATAKANA LETTER SMALL TU |
| 545 | case '\u30E3': // # KATAKANA LETTER SMALL YA |
| 546 | case '\u30E5': // # KATAKANA LETTER SMALL YU |
| 547 | case '\u30E7': // # KATAKANA LETTER SMALL YO |
| 548 | case '\u30EE': // # KATAKANA LETTER SMALL WA |
| 549 | case '\u30F5': // # KATAKANA LETTER SMALL KA |
| 550 | case '\u30F6': // # KATAKANA LETTER SMALL KE |
| 551 | case '\u30FB': // # KATAKANA MIDDLE DOT |
| 552 | case '\u30FC': // # KATAKANA-HIRAGANA PROLONGED SOUND MARK |
| 553 | case '\u30FD': // # KATAKANA ITERATION MARK |
| 554 | case '\u30FE': // # KATAKANA VOICED ITERATION MARK |
| 555 | return false; |
| 556 | } |
| 557 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 558 | return true; // Katakana (except small characters) |
| 559 | } |
| 560 | if (c >= '\u3400' && c <= '\u4DB5') { |
| 561 | return true; // CJK UNIFIED IDEOGRAPHS EXTENSION A |
| 562 | } |
| 563 | if (c >= '\u4E00' && c <= '\u9FBB') { |
| 564 | return true; // CJK UNIFIED IDEOGRAPHS |
| 565 | } |
| 566 | if (c >= '\uF900' && c <= '\uFAD9') { |
| 567 | return true; // CJK COMPATIBILITY IDEOGRAPHS |
| 568 | } |
| 569 | if (c >= '\uA000' && c <= '\uA48F') { |
| 570 | return true; // YI SYLLABLES |
| 571 | } |
| 572 | if (c >= '\uA490' && c <= '\uA4CF') { |
| 573 | return true; // YI RADICALS |
| 574 | } |
| 575 | if (c >= '\uFE62' && c <= '\uFE66') { |
| 576 | return true; // SMALL PLUS SIGN to SMALL EQUALS SIGN |
| 577 | } |
| 578 | if (c >= '\uFF10' && c <= '\uFF19') { |
| 579 | return true; // WIDE DIGITS |
| 580 | } |
| 581 | |
| 582 | return false; |
| 583 | } |
| 584 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 585 | private int out(CharSequence text, int start, int end, |
| 586 | int above, int below, int top, int bottom, int v, |
| 587 | float spacingmult, float spacingadd, |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 588 | LineHeightSpan[] chooseHt, int[] chooseHtv, |
Doug Felt | c982f60 | 2010-05-25 11:51:40 -0700 | [diff] [blame] | 589 | Paint.FontMetricsInt fm, boolean hasTabOrEmoji, |
Gilles Debunne | d300e75 | 2011-10-17 13:37:36 -0700 | [diff] [blame] | 590 | boolean needMultiply, byte[] chdirs, int dir, |
| 591 | boolean easy, int bufEnd, boolean includePad, |
| 592 | boolean trackPad, char[] chs, |
| 593 | float[] widths, int widthStart, TextUtils.TruncateAt ellipsize, |
| 594 | float ellipsisWidth, float textWidth, |
| 595 | TextPaint paint, boolean moreChars) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 596 | int j = mLineCount; |
| 597 | int off = j * mColumns; |
| 598 | int want = off + mColumns + TOP; |
| 599 | int[] lines = mLines; |
| 600 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 601 | if (want >= lines.length) { |
| 602 | int nlen = ArrayUtils.idealIntArraySize(want + 1); |
| 603 | int[] grow = new int[nlen]; |
| 604 | System.arraycopy(lines, 0, grow, 0, lines.length); |
| 605 | mLines = grow; |
| 606 | lines = grow; |
| 607 | |
| 608 | Directions[] grow2 = new Directions[nlen]; |
| 609 | System.arraycopy(mLineDirections, 0, grow2, 0, |
| 610 | mLineDirections.length); |
| 611 | mLineDirections = grow2; |
| 612 | } |
| 613 | |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 614 | if (chooseHt != null) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 615 | fm.ascent = above; |
| 616 | fm.descent = below; |
| 617 | fm.top = top; |
| 618 | fm.bottom = bottom; |
| 619 | |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 620 | for (int i = 0; i < chooseHt.length; i++) { |
| 621 | if (chooseHt[i] instanceof LineHeightSpan.WithDensity) { |
| 622 | ((LineHeightSpan.WithDensity) chooseHt[i]). |
| 623 | chooseHeight(text, start, end, chooseHtv[i], v, fm, paint); |
Eric Fischer | a9f1dd0 | 2009-08-12 15:00:10 -0700 | [diff] [blame] | 624 | |
| 625 | } else { |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 626 | chooseHt[i].chooseHeight(text, start, end, chooseHtv[i], v, fm); |
Eric Fischer | a9f1dd0 | 2009-08-12 15:00:10 -0700 | [diff] [blame] | 627 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 628 | } |
| 629 | |
| 630 | above = fm.ascent; |
| 631 | below = fm.descent; |
| 632 | top = fm.top; |
| 633 | bottom = fm.bottom; |
| 634 | } |
| 635 | |
| 636 | if (j == 0) { |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 637 | if (trackPad) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 638 | mTopPadding = top - above; |
| 639 | } |
| 640 | |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 641 | if (includePad) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 642 | above = top; |
| 643 | } |
| 644 | } |
Gilles Debunne | d300e75 | 2011-10-17 13:37:36 -0700 | [diff] [blame] | 645 | if (end == bufEnd) { |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 646 | if (trackPad) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 647 | mBottomPadding = bottom - below; |
| 648 | } |
| 649 | |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 650 | if (includePad) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 651 | below = bottom; |
| 652 | } |
| 653 | } |
| 654 | |
| 655 | int extra; |
| 656 | |
| 657 | if (needMultiply) { |
Doug Felt | 1065758 | 2010-02-22 11:19:01 -0800 | [diff] [blame] | 658 | double ex = (below - above) * (spacingmult - 1) + spacingadd; |
| 659 | if (ex >= 0) { |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 660 | extra = (int)(ex + EXTRA_ROUNDING); |
Doug Felt | 1065758 | 2010-02-22 11:19:01 -0800 | [diff] [blame] | 661 | } else { |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 662 | extra = -(int)(-ex + EXTRA_ROUNDING); |
Doug Felt | 1065758 | 2010-02-22 11:19:01 -0800 | [diff] [blame] | 663 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 664 | } else { |
| 665 | extra = 0; |
| 666 | } |
| 667 | |
| 668 | lines[off + START] = start; |
| 669 | lines[off + TOP] = v; |
| 670 | lines[off + DESCENT] = below + extra; |
| 671 | |
| 672 | v += (below - above) + extra; |
| 673 | lines[off + mColumns + START] = end; |
| 674 | lines[off + mColumns + TOP] = v; |
| 675 | |
Doug Felt | c982f60 | 2010-05-25 11:51:40 -0700 | [diff] [blame] | 676 | if (hasTabOrEmoji) |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 677 | lines[off + TAB] |= TAB_MASK; |
| 678 | |
Doug Felt | 9f7a444 | 2010-03-01 12:45:56 -0800 | [diff] [blame] | 679 | lines[off + DIR] |= dir << DIR_SHIFT; |
| 680 | Directions linedirs = DIRS_ALL_LEFT_TO_RIGHT; |
| 681 | // easy means all chars < the first RTL, so no emoji, no nothing |
Doug Felt | 4e0c5e5 | 2010-03-15 16:56:02 -0700 | [diff] [blame] | 682 | // XXX a run with no text or all spaces is easy but might be an empty |
Doug Felt | 9f7a444 | 2010-03-01 12:45:56 -0800 | [diff] [blame] | 683 | // RTL paragraph. Make sure easy is false if this is the case. |
| 684 | if (easy) { |
| 685 | mLineDirections[j] = linedirs; |
| 686 | } else { |
Gilles Debunne | f3fa0cd | 2011-02-03 14:17:05 -0800 | [diff] [blame] | 687 | mLineDirections[j] = AndroidBidi.directions(dir, chdirs, start - widthStart, chs, |
| 688 | start - widthStart, end - start); |
Gilles Debunne | 0a4db3c | 2011-01-14 12:12:04 -0800 | [diff] [blame] | 689 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 690 | |
Fabrice Di Meglio | aef455f | 2011-08-29 15:39:11 -0700 | [diff] [blame] | 691 | if (ellipsize != null) { |
| 692 | // If there is only one line, then do any type of ellipsis except when it is MARQUEE |
| 693 | // if there are multiple lines, just allow END ellipsis on the last line |
| 694 | boolean firstLine = (j == 0); |
| 695 | boolean currentLineIsTheLastVisibleOne = (j + 1 == mMaximumVisibleLineCount); |
Fabrice Di Meglio | 8059e090 | 2011-08-10 16:31:58 -0700 | [diff] [blame] | 696 | boolean forceEllipsis = moreChars && (mLineCount + 1 == mMaximumVisibleLineCount); |
Fabrice Di Meglio | aef455f | 2011-08-29 15:39:11 -0700 | [diff] [blame] | 697 | |
Fabrice Di Meglio | 34a126e | 2012-02-29 18:43:14 -0800 | [diff] [blame] | 698 | boolean doEllipsis = |
| 699 | (((mMaximumVisibleLineCount == 1 && moreChars) || (firstLine && !moreChars)) && |
Fabrice Di Meglio | aef455f | 2011-08-29 15:39:11 -0700 | [diff] [blame] | 700 | ellipsize != TextUtils.TruncateAt.MARQUEE) || |
| 701 | (!firstLine && (currentLineIsTheLastVisibleOne || !moreChars) && |
| 702 | ellipsize == TextUtils.TruncateAt.END); |
| 703 | if (doEllipsis) { |
| 704 | calculateEllipsis(start, end, widths, widthStart, |
| 705 | ellipsisWidth, ellipsize, j, |
| 706 | textWidth, paint, forceEllipsis); |
| 707 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 708 | } |
| 709 | |
| 710 | mLineCount++; |
| 711 | return v; |
| 712 | } |
| 713 | |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 714 | private void calculateEllipsis(int lineStart, int lineEnd, |
| 715 | float[] widths, int widthStart, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 716 | float avail, TextUtils.TruncateAt where, |
Fabrice Di Meglio | 8059e090 | 2011-08-10 16:31:58 -0700 | [diff] [blame] | 717 | int line, float textWidth, TextPaint paint, |
| 718 | boolean forceEllipsis) { |
| 719 | if (textWidth <= avail && !forceEllipsis) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 720 | // Everything fits! |
| 721 | mLines[mColumns * line + ELLIPSIS_START] = 0; |
| 722 | mLines[mColumns * line + ELLIPSIS_COUNT] = 0; |
| 723 | return; |
| 724 | } |
| 725 | |
Fabrice Di Meglio | cb33264 | 2011-09-23 19:08:04 -0700 | [diff] [blame] | 726 | float ellipsisWidth = paint.measureText( |
Fabrice Di Meglio | 8d44fff | 2012-06-13 15:45:38 -0700 | [diff] [blame] | 727 | (where == TextUtils.TruncateAt.END_SMALL) ? |
| 728 | ELLIPSIS_TWO_DOTS : ELLIPSIS_NORMAL, 0, 1); |
Fabrice Di Meglio | 8059e090 | 2011-08-10 16:31:58 -0700 | [diff] [blame] | 729 | int ellipsisStart = 0; |
| 730 | int ellipsisCount = 0; |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 731 | int len = lineEnd - lineStart; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 732 | |
Fabrice Di Meglio | 8059e090 | 2011-08-10 16:31:58 -0700 | [diff] [blame] | 733 | // We only support start ellipsis on a single line |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 734 | if (where == TextUtils.TruncateAt.START) { |
Fabrice Di Meglio | 8059e090 | 2011-08-10 16:31:58 -0700 | [diff] [blame] | 735 | if (mMaximumVisibleLineCount == 1) { |
| 736 | float sum = 0; |
| 737 | int i; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 738 | |
Fabrice Di Meglio | 8059e090 | 2011-08-10 16:31:58 -0700 | [diff] [blame] | 739 | for (i = len; i >= 0; i--) { |
| 740 | float w = widths[i - 1 + lineStart - widthStart]; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 741 | |
Fabrice Di Meglio | 8059e090 | 2011-08-10 16:31:58 -0700 | [diff] [blame] | 742 | if (w + sum + ellipsisWidth > avail) { |
| 743 | break; |
| 744 | } |
| 745 | |
| 746 | sum += w; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 747 | } |
| 748 | |
Fabrice Di Meglio | 8059e090 | 2011-08-10 16:31:58 -0700 | [diff] [blame] | 749 | ellipsisStart = 0; |
| 750 | ellipsisCount = i; |
| 751 | } else { |
| 752 | if (Log.isLoggable(TAG, Log.WARN)) { |
| 753 | Log.w(TAG, "Start Ellipsis only supported with one line"); |
| 754 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 755 | } |
Fabrice Di Meglio | cb33264 | 2011-09-23 19:08:04 -0700 | [diff] [blame] | 756 | } else if (where == TextUtils.TruncateAt.END || where == TextUtils.TruncateAt.MARQUEE || |
| 757 | where == TextUtils.TruncateAt.END_SMALL) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 758 | float sum = 0; |
| 759 | int i; |
| 760 | |
| 761 | for (i = 0; i < len; i++) { |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 762 | float w = widths[i + lineStart - widthStart]; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 763 | |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 764 | if (w + sum + ellipsisWidth > avail) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 765 | break; |
| 766 | } |
| 767 | |
| 768 | sum += w; |
| 769 | } |
| 770 | |
| 771 | ellipsisStart = i; |
| 772 | ellipsisCount = len - i; |
Fabrice Di Meglio | aef455f | 2011-08-29 15:39:11 -0700 | [diff] [blame] | 773 | if (forceEllipsis && ellipsisCount == 0 && len > 0) { |
| 774 | ellipsisStart = len - 1; |
Fabrice Di Meglio | 8059e090 | 2011-08-10 16:31:58 -0700 | [diff] [blame] | 775 | ellipsisCount = 1; |
| 776 | } |
| 777 | } else { |
| 778 | // where = TextUtils.TruncateAt.MIDDLE We only support middle ellipsis on a single line |
| 779 | if (mMaximumVisibleLineCount == 1) { |
| 780 | float lsum = 0, rsum = 0; |
| 781 | int left = 0, right = len; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 782 | |
Fabrice Di Meglio | 8059e090 | 2011-08-10 16:31:58 -0700 | [diff] [blame] | 783 | float ravail = (avail - ellipsisWidth) / 2; |
| 784 | for (right = len; right >= 0; right--) { |
| 785 | float w = widths[right - 1 + lineStart - widthStart]; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 786 | |
Fabrice Di Meglio | 8059e090 | 2011-08-10 16:31:58 -0700 | [diff] [blame] | 787 | if (w + rsum > ravail) { |
| 788 | break; |
| 789 | } |
| 790 | |
| 791 | rsum += w; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 792 | } |
| 793 | |
Fabrice Di Meglio | 8059e090 | 2011-08-10 16:31:58 -0700 | [diff] [blame] | 794 | float lavail = avail - ellipsisWidth - rsum; |
| 795 | for (left = 0; left < right; left++) { |
| 796 | float w = widths[left + lineStart - widthStart]; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 797 | |
Fabrice Di Meglio | 8059e090 | 2011-08-10 16:31:58 -0700 | [diff] [blame] | 798 | if (w + lsum > lavail) { |
| 799 | break; |
| 800 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 801 | |
Fabrice Di Meglio | 8059e090 | 2011-08-10 16:31:58 -0700 | [diff] [blame] | 802 | lsum += w; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 803 | } |
| 804 | |
Fabrice Di Meglio | 8059e090 | 2011-08-10 16:31:58 -0700 | [diff] [blame] | 805 | ellipsisStart = left; |
| 806 | ellipsisCount = right - left; |
| 807 | } else { |
| 808 | if (Log.isLoggable(TAG, Log.WARN)) { |
| 809 | Log.w(TAG, "Middle Ellipsis only supported with one line"); |
| 810 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 811 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 812 | } |
| 813 | |
| 814 | mLines[mColumns * line + ELLIPSIS_START] = ellipsisStart; |
| 815 | mLines[mColumns * line + ELLIPSIS_COUNT] = ellipsisCount; |
| 816 | } |
| 817 | |
Doug Felt | e8e45f2 | 2010-03-29 14:58:40 -0700 | [diff] [blame] | 818 | // Override the base class so we can directly access our members, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 819 | // rather than relying on member functions. |
| 820 | // The logic mirrors that of Layout.getLineForVertical |
| 821 | // FIXME: It may be faster to do a linear search for layouts without many lines. |
Gilles Debunne | 6611147 | 2010-11-19 11:04:37 -0800 | [diff] [blame] | 822 | @Override |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 823 | public int getLineForVertical(int vertical) { |
| 824 | int high = mLineCount; |
| 825 | int low = -1; |
| 826 | int guess; |
| 827 | int[] lines = mLines; |
| 828 | while (high - low > 1) { |
| 829 | guess = (high + low) >> 1; |
| 830 | if (lines[mColumns * guess + TOP] > vertical){ |
| 831 | high = guess; |
| 832 | } else { |
| 833 | low = guess; |
| 834 | } |
| 835 | } |
| 836 | if (low < 0) { |
| 837 | return 0; |
| 838 | } else { |
| 839 | return low; |
| 840 | } |
| 841 | } |
| 842 | |
Gilles Debunne | 6611147 | 2010-11-19 11:04:37 -0800 | [diff] [blame] | 843 | @Override |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 844 | public int getLineCount() { |
| 845 | return mLineCount; |
| 846 | } |
| 847 | |
Gilles Debunne | 6611147 | 2010-11-19 11:04:37 -0800 | [diff] [blame] | 848 | @Override |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 849 | public int getLineTop(int line) { |
Gilles Debunne | 0a4db3c | 2011-01-14 12:12:04 -0800 | [diff] [blame] | 850 | int top = mLines[mColumns * line + TOP]; |
| 851 | if (mMaximumVisibleLineCount > 0 && line >= mMaximumVisibleLineCount && |
| 852 | line != mLineCount) { |
| 853 | top += getBottomPadding(); |
| 854 | } |
| 855 | return top; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 856 | } |
| 857 | |
Gilles Debunne | 6611147 | 2010-11-19 11:04:37 -0800 | [diff] [blame] | 858 | @Override |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 859 | public int getLineDescent(int line) { |
Gilles Debunne | 0a4db3c | 2011-01-14 12:12:04 -0800 | [diff] [blame] | 860 | int descent = mLines[mColumns * line + DESCENT]; |
Gilles Debunne | f3fa0cd | 2011-02-03 14:17:05 -0800 | [diff] [blame] | 861 | if (mMaximumVisibleLineCount > 0 && line >= mMaximumVisibleLineCount - 1 && // -1 intended |
Gilles Debunne | 0a4db3c | 2011-01-14 12:12:04 -0800 | [diff] [blame] | 862 | line != mLineCount) { |
| 863 | descent += getBottomPadding(); |
| 864 | } |
| 865 | return descent; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 866 | } |
| 867 | |
Gilles Debunne | 6611147 | 2010-11-19 11:04:37 -0800 | [diff] [blame] | 868 | @Override |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 869 | public int getLineStart(int line) { |
| 870 | return mLines[mColumns * line + START] & START_MASK; |
| 871 | } |
| 872 | |
Gilles Debunne | 6611147 | 2010-11-19 11:04:37 -0800 | [diff] [blame] | 873 | @Override |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 874 | public int getParagraphDirection(int line) { |
| 875 | return mLines[mColumns * line + DIR] >> DIR_SHIFT; |
| 876 | } |
| 877 | |
Gilles Debunne | 6611147 | 2010-11-19 11:04:37 -0800 | [diff] [blame] | 878 | @Override |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 879 | public boolean getLineContainsTab(int line) { |
| 880 | return (mLines[mColumns * line + TAB] & TAB_MASK) != 0; |
| 881 | } |
| 882 | |
Gilles Debunne | 6611147 | 2010-11-19 11:04:37 -0800 | [diff] [blame] | 883 | @Override |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 884 | public final Directions getLineDirections(int line) { |
| 885 | return mLineDirections[line]; |
| 886 | } |
| 887 | |
Gilles Debunne | 6611147 | 2010-11-19 11:04:37 -0800 | [diff] [blame] | 888 | @Override |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 889 | public int getTopPadding() { |
| 890 | return mTopPadding; |
| 891 | } |
| 892 | |
Gilles Debunne | 6611147 | 2010-11-19 11:04:37 -0800 | [diff] [blame] | 893 | @Override |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 894 | public int getBottomPadding() { |
| 895 | return mBottomPadding; |
| 896 | } |
| 897 | |
| 898 | @Override |
| 899 | public int getEllipsisCount(int line) { |
| 900 | if (mColumns < COLUMNS_ELLIPSIZE) { |
| 901 | return 0; |
| 902 | } |
| 903 | |
| 904 | return mLines[mColumns * line + ELLIPSIS_COUNT]; |
| 905 | } |
| 906 | |
| 907 | @Override |
| 908 | public int getEllipsisStart(int line) { |
| 909 | if (mColumns < COLUMNS_ELLIPSIZE) { |
| 910 | return 0; |
| 911 | } |
| 912 | |
| 913 | return mLines[mColumns * line + ELLIPSIS_START]; |
| 914 | } |
| 915 | |
| 916 | @Override |
| 917 | public int getEllipsizedWidth() { |
| 918 | return mEllipsizedWidth; |
| 919 | } |
| 920 | |
Romain Guy | e5ea440 | 2011-08-01 14:01:37 -0700 | [diff] [blame] | 921 | void prepare() { |
| 922 | mMeasured = MeasuredText.obtain(); |
| 923 | } |
| 924 | |
| 925 | void finish() { |
| 926 | mMeasured = MeasuredText.recycle(mMeasured); |
| 927 | } |
Gilles Debunne | 0a4db3c | 2011-01-14 12:12:04 -0800 | [diff] [blame] | 928 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 929 | private int mLineCount; |
| 930 | private int mTopPadding, mBottomPadding; |
| 931 | private int mColumns; |
| 932 | private int mEllipsizedWidth; |
| 933 | |
| 934 | private static final int COLUMNS_NORMAL = 3; |
| 935 | private static final int COLUMNS_ELLIPSIZE = 5; |
| 936 | private static final int START = 0; |
| 937 | private static final int DIR = START; |
| 938 | private static final int TAB = START; |
| 939 | private static final int TOP = 1; |
| 940 | private static final int DESCENT = 2; |
| 941 | private static final int ELLIPSIS_START = 3; |
| 942 | private static final int ELLIPSIS_COUNT = 4; |
| 943 | |
| 944 | private int[] mLines; |
| 945 | private Directions[] mLineDirections; |
Fabrice Di Meglio | 8059e090 | 2011-08-10 16:31:58 -0700 | [diff] [blame] | 946 | private int mMaximumVisibleLineCount = Integer.MAX_VALUE; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 947 | |
| 948 | private static final int START_MASK = 0x1FFFFFFF; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 949 | private static final int DIR_SHIFT = 30; |
| 950 | private static final int TAB_MASK = 0x20000000; |
| 951 | |
Doug Felt | c982f60 | 2010-05-25 11:51:40 -0700 | [diff] [blame] | 952 | private static final int TAB_INCREMENT = 20; // same as Layout, but that's private |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 953 | |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 954 | private static final char CHAR_FIRST_CJK = '\u2E80'; |
| 955 | |
| 956 | private static final char CHAR_NEW_LINE = '\n'; |
| 957 | private static final char CHAR_TAB = '\t'; |
| 958 | private static final char CHAR_SPACE = ' '; |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 959 | private static final char CHAR_SLASH = '/'; |
| 960 | private static final char CHAR_HYPHEN = '-'; |
Raph Levien | 8d087c3 | 2013-03-29 09:25:48 -0700 | [diff] [blame] | 961 | private static final char CHAR_ZWSP = '\u200B'; |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 962 | |
| 963 | private static final double EXTRA_ROUNDING = 0.5; |
Fabrice Di Meglio | cb33264 | 2011-09-23 19:08:04 -0700 | [diff] [blame] | 964 | |
Fabrice Di Meglio | 121c82c | 2011-02-15 15:44:49 -0800 | [diff] [blame] | 965 | private static final int CHAR_FIRST_HIGH_SURROGATE = 0xD800; |
| 966 | private static final int CHAR_LAST_LOW_SURROGATE = 0xDFFF; |
| 967 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 968 | /* |
Doug Felt | e8e45f2 | 2010-03-29 14:58:40 -0700 | [diff] [blame] | 969 | * This is reused across calls to generate() |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 970 | */ |
Doug Felt | e8e45f2 | 2010-03-29 14:58:40 -0700 | [diff] [blame] | 971 | private MeasuredText mMeasured; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 972 | private Paint.FontMetricsInt mFontMetricsInt = new Paint.FontMetricsInt(); |
| 973 | } |