StaticLayout.java revision f4a3f3a03c72b6a38dc2f3f965531dc2a12460df
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 19531c30c62b14881aab31a5133920a971b1fbb50eRaph Levienimport android.annotation.Nullable; 209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.graphics.Paint; 219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.text.style.LeadingMarginSpan; 226611147383118cd91cc29b31bff9aaf4c853f39dGilles Debunneimport android.text.style.LeadingMarginSpan.LeadingMarginSpan2; 239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.text.style.LineHeightSpan; 249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.text.style.MetricAffectingSpan; 25c982f60e982c1d2df9f115ed9a5c3ef3643d0892Doug Feltimport android.text.style.TabStopSpan; 268059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglioimport android.util.Log; 2739b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levienimport android.util.Pools.SynchronizedPool; 289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 29cb379120456d8065d742021fc5c66748fc8a11a8Doug Feltimport com.android.internal.util.ArrayUtils; 30776abc24cdd18610232a50b997cce3cffa74609bAdam Lesinskiimport com.android.internal.util.GrowingArrayUtils; 31cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt 32c8f9e6218681640d5f384c12edf06619be56a583Anish Athalyeimport java.util.Arrays; 334c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levienimport java.util.Locale; 34c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye 359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/** 369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * StaticLayout is a Layout for text that will not be edited after it 379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * is laid out. Use {@link DynamicLayout} for text that may change. 389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>This is used by widgets to control text layout. You should not need 399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to use this class directly unless you are implementing your own widget 409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * or custom display object, or would be tempted to call 414e0c5e55e171532760d5f51e0165563827129d4eDoug Felt * {@link android.graphics.Canvas#drawText(java.lang.CharSequence, int, int, 424e0c5e55e171532760d5f51e0165563827129d4eDoug Felt * float, float, android.graphics.Paint) 434e0c5e55e171532760d5f51e0165563827129d4eDoug Felt * Canvas.drawText()} directly.</p> 449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 45121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Megliopublic class StaticLayout extends Layout { 46121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio 478059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio static final String TAG = "StaticLayout"; 488059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio 49d3ab692d28018825578ff05832644cfad60233fbRaph Levien /** 50531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * Builder for static layouts. The builder is a newer pattern for constructing 51531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * StaticLayout objects and should be preferred over the constructors, 52531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * particularly to access newer features. To build a static layout, first 53531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * call {@link #obtain} with the required arguments (text, paint, and width), 54531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * then call setters for optional parameters, and finally {@link #build} 55531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * to build the StaticLayout object. Parameters not explicitly set will get 56531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * default values. 57d3ab692d28018825578ff05832644cfad60233fbRaph Levien */ 58d3ab692d28018825578ff05832644cfad60233fbRaph Levien public final static class Builder { 594c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien private Builder() { 604c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien mNativePtr = nNewBuilder(); 614c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien } 624c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien 63531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien /** 64531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * Obtain a builder for constructing StaticLayout objects 65531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * 66531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @param source The text to be laid out, optionally with spans 67531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @param start The index of the start of the text 68531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @param end The index + 1 of the end of the text 69531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @param paint The base paint used for layout 70531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @param width The width in pixels 71531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @return a builder object used for constructing the StaticLayout 72531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien */ 73ebd66ca600dc2c43edb0830bcf1a92fafec30a5aRaph Levien public static Builder obtain(CharSequence source, int start, int end, TextPaint paint, 74ebd66ca600dc2c43edb0830bcf1a92fafec30a5aRaph Levien int width) { 7539b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien Builder b = sPool.acquire(); 76d3ab692d28018825578ff05832644cfad60233fbRaph Levien if (b == null) { 77d3ab692d28018825578ff05832644cfad60233fbRaph Levien b = new Builder(); 78d3ab692d28018825578ff05832644cfad60233fbRaph Levien } 79d3ab692d28018825578ff05832644cfad60233fbRaph Levien 80d3ab692d28018825578ff05832644cfad60233fbRaph Levien // set default initial values 8139b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien b.mText = source; 8239b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien b.mStart = start; 8339b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien b.mEnd = end; 84ebd66ca600dc2c43edb0830bcf1a92fafec30a5aRaph Levien b.mPaint = paint; 8539b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien b.mWidth = width; 8639b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien b.mAlignment = Alignment.ALIGN_NORMAL; 87d3ab692d28018825578ff05832644cfad60233fbRaph Levien b.mTextDir = TextDirectionHeuristics.FIRSTSTRONG_LTR; 88d3ab692d28018825578ff05832644cfad60233fbRaph Levien b.mSpacingMult = 1.0f; 89d3ab692d28018825578ff05832644cfad60233fbRaph Levien b.mSpacingAdd = 0.0f; 90d3ab692d28018825578ff05832644cfad60233fbRaph Levien b.mIncludePad = true; 9139b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien b.mEllipsizedWidth = width; 92d3ab692d28018825578ff05832644cfad60233fbRaph Levien b.mEllipsize = null; 93d3ab692d28018825578ff05832644cfad60233fbRaph Levien b.mMaxLines = Integer.MAX_VALUE; 943bd60c7b1125ee42cd7e8746aeaebdb43e8211d8Raph Levien b.mBreakStrategy = Layout.BREAK_STRATEGY_SIMPLE; 9595c7a13f2ac4f31ed3aaec9b47b9a29a3dbca978Roozbeh Pournader b.mHyphenationFrequency = Layout.HYPHENATION_FREQUENCY_NONE; 96d3ab692d28018825578ff05832644cfad60233fbRaph Levien 97d3ab692d28018825578ff05832644cfad60233fbRaph Levien b.mMeasuredText = MeasuredText.obtain(); 98d3ab692d28018825578ff05832644cfad60233fbRaph Levien return b; 99d3ab692d28018825578ff05832644cfad60233fbRaph Levien } 100d3ab692d28018825578ff05832644cfad60233fbRaph Levien 10139b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien private static void recycle(Builder b) { 102d3ab692d28018825578ff05832644cfad60233fbRaph Levien b.mPaint = null; 103d3ab692d28018825578ff05832644cfad60233fbRaph Levien b.mText = null; 104d3ab692d28018825578ff05832644cfad60233fbRaph Levien MeasuredText.recycle(b.mMeasuredText); 1053bd60c7b1125ee42cd7e8746aeaebdb43e8211d8Raph Levien b.mMeasuredText = null; 1063bd60c7b1125ee42cd7e8746aeaebdb43e8211d8Raph Levien nFinishBuilder(b.mNativePtr); 10739b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien sPool.release(b); 108d3ab692d28018825578ff05832644cfad60233fbRaph Levien } 109d3ab692d28018825578ff05832644cfad60233fbRaph Levien 110d3ab692d28018825578ff05832644cfad60233fbRaph Levien // release any expensive state 111d3ab692d28018825578ff05832644cfad60233fbRaph Levien /* package */ void finish() { 1124c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien nFinishBuilder(mNativePtr); 113d3ab692d28018825578ff05832644cfad60233fbRaph Levien mMeasuredText.finish(); 114d3ab692d28018825578ff05832644cfad60233fbRaph Levien } 115d3ab692d28018825578ff05832644cfad60233fbRaph Levien 116d3ab692d28018825578ff05832644cfad60233fbRaph Levien public Builder setText(CharSequence source) { 117d3ab692d28018825578ff05832644cfad60233fbRaph Levien return setText(source, 0, source.length()); 118d3ab692d28018825578ff05832644cfad60233fbRaph Levien } 119d3ab692d28018825578ff05832644cfad60233fbRaph Levien 120531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien /** 121531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * Set the text. Only useful when re-using the builder, which is done for 122531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * the internal implementation of {@link DynamicLayout} but not as part 123531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * of normal {@link StaticLayout} usage. 124531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * 125531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @param source The text to be laid out, optionally with spans 126531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @param start The index of the start of the text 127531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @param end The index + 1 of the end of the text 128531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @return this builder, useful for chaining 129531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * 130531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @hide 131531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien */ 132d3ab692d28018825578ff05832644cfad60233fbRaph Levien public Builder setText(CharSequence source, int start, int end) { 133d3ab692d28018825578ff05832644cfad60233fbRaph Levien mText = source; 134d3ab692d28018825578ff05832644cfad60233fbRaph Levien mStart = start; 135d3ab692d28018825578ff05832644cfad60233fbRaph Levien mEnd = end; 136d3ab692d28018825578ff05832644cfad60233fbRaph Levien return this; 137d3ab692d28018825578ff05832644cfad60233fbRaph Levien } 138d3ab692d28018825578ff05832644cfad60233fbRaph Levien 139531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien /** 140531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * Set the paint. Internal for reuse cases only. 141531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * 142531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @param paint The base paint used for layout 143531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @return this builder, useful for chaining 144531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * 145531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @hide 146531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien */ 147d3ab692d28018825578ff05832644cfad60233fbRaph Levien public Builder setPaint(TextPaint paint) { 148d3ab692d28018825578ff05832644cfad60233fbRaph Levien mPaint = paint; 149d3ab692d28018825578ff05832644cfad60233fbRaph Levien return this; 150d3ab692d28018825578ff05832644cfad60233fbRaph Levien } 151d3ab692d28018825578ff05832644cfad60233fbRaph Levien 152531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien /** 153531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * Set the width. Internal for reuse cases only. 154531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * 155531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @param width The width in pixels 156531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @return this builder, useful for chaining 157531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * 158531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @hide 159531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien */ 160d3ab692d28018825578ff05832644cfad60233fbRaph Levien public Builder setWidth(int width) { 161d3ab692d28018825578ff05832644cfad60233fbRaph Levien mWidth = width; 162d3ab692d28018825578ff05832644cfad60233fbRaph Levien if (mEllipsize == null) { 163d3ab692d28018825578ff05832644cfad60233fbRaph Levien mEllipsizedWidth = width; 164d3ab692d28018825578ff05832644cfad60233fbRaph Levien } 165d3ab692d28018825578ff05832644cfad60233fbRaph Levien return this; 166d3ab692d28018825578ff05832644cfad60233fbRaph Levien } 167d3ab692d28018825578ff05832644cfad60233fbRaph Levien 168531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien /** 169531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * Set the alignment. The default is {@link Layout.Alignment#ALIGN_NORMAL}. 170531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * 171531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @param alignment Alignment for the resulting {@link StaticLayout} 172531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @return this builder, useful for chaining 173531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien */ 17439b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien public Builder setAlignment(Alignment alignment) { 17539b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien mAlignment = alignment; 17639b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien return this; 17739b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien } 17839b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien 179531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien /** 180531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * Set the text direction heuristic. The text direction heuristic is used to 181531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * resolve text direction based per-paragraph based on the input text. The default is 182531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * {@link TextDirectionHeuristics#FIRSTSTRONG_LTR}. 183531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * 184531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @param textDir text direction heuristic for resolving BiDi behavior. 185531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @return this builder, useful for chaining 186531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien */ 187a6a082862b9e2ea4c9e9a1a945927c4040993f6eRaph Levien public Builder setTextDirection(TextDirectionHeuristic textDir) { 188d3ab692d28018825578ff05832644cfad60233fbRaph Levien mTextDir = textDir; 189d3ab692d28018825578ff05832644cfad60233fbRaph Levien return this; 190d3ab692d28018825578ff05832644cfad60233fbRaph Levien } 191d3ab692d28018825578ff05832644cfad60233fbRaph Levien 192531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien /** 193531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * Set line spacing parameters. The default is 0.0 for {@code spacingAdd} 194531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * and 1.0 for {@code spacingMult}. 195531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * 196531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @param spacingAdd line spacing add 197531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @param spacingMult line spacing multiplier 198531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @return this builder, useful for chaining 199531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @see android.widget.TextView#setLineSpacing 200531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien */ 201531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien public Builder setLineSpacing(float spacingAdd, float spacingMult) { 202d3ab692d28018825578ff05832644cfad60233fbRaph Levien mSpacingAdd = spacingAdd; 203531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien mSpacingMult = spacingMult; 204d3ab692d28018825578ff05832644cfad60233fbRaph Levien return this; 205d3ab692d28018825578ff05832644cfad60233fbRaph Levien } 206d3ab692d28018825578ff05832644cfad60233fbRaph Levien 207531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien /** 208531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * Set whether to include extra space beyond font ascent and descent (which is 209531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * needed to avoid clipping in some languages, such as Arabic and Kannada). The 210531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * default is {@code true}. 211531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * 212531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @param includePad whether to include padding 213531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @return this builder, useful for chaining 214531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @see android.widget.TextView#setIncludeFontPadding 215531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien */ 216d3ab692d28018825578ff05832644cfad60233fbRaph Levien public Builder setIncludePad(boolean includePad) { 217d3ab692d28018825578ff05832644cfad60233fbRaph Levien mIncludePad = includePad; 218d3ab692d28018825578ff05832644cfad60233fbRaph Levien return this; 219d3ab692d28018825578ff05832644cfad60233fbRaph Levien } 220d3ab692d28018825578ff05832644cfad60233fbRaph Levien 221531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien /** 222531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * Set the width as used for ellipsizing purposes, if it differs from the 223531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * normal layout width. The default is the {@code width} 224531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * passed to {@link #obtain}. 225531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * 226531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @param ellipsizedWidth width used for ellipsizing, in pixels 227531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @return this builder, useful for chaining 228531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @see android.widget.TextView#setEllipsize 229531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien */ 230d3ab692d28018825578ff05832644cfad60233fbRaph Levien public Builder setEllipsizedWidth(int ellipsizedWidth) { 231d3ab692d28018825578ff05832644cfad60233fbRaph Levien mEllipsizedWidth = ellipsizedWidth; 232d3ab692d28018825578ff05832644cfad60233fbRaph Levien return this; 233d3ab692d28018825578ff05832644cfad60233fbRaph Levien } 234d3ab692d28018825578ff05832644cfad60233fbRaph Levien 235531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien /** 236531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * Set ellipsizing on the layout. Causes words that are longer than the view 237531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * is wide, or exceeding the number of lines (see #setMaxLines) in the case 238531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * of {@link android.text.TextUtils.TruncateAt#END} or 239531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * {@link android.text.TextUtils.TruncateAt#MARQUEE}, to be ellipsized instead 240531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * of broken. The default is 241531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * {@code null}, indicating no ellipsis is to be applied. 242531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * 243531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @param ellipsize type of ellipsis behavior 244531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @return this builder, useful for chaining 245531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @see android.widget.TextView#setEllipsize 246531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien */ 247531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien public Builder setEllipsize(@Nullable TextUtils.TruncateAt ellipsize) { 248d3ab692d28018825578ff05832644cfad60233fbRaph Levien mEllipsize = ellipsize; 249d3ab692d28018825578ff05832644cfad60233fbRaph Levien return this; 250d3ab692d28018825578ff05832644cfad60233fbRaph Levien } 251d3ab692d28018825578ff05832644cfad60233fbRaph Levien 252531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien /** 253531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * Set maximum number of lines. This is particularly useful in the case of 254531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * ellipsizing, where it changes the layout of the last line. The default is 255531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * unlimited. 256531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * 257531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @param maxLines maximum number of lines in the layout 258531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @return this builder, useful for chaining 259531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @see android.widget.TextView#setMaxLines 260531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien */ 261d3ab692d28018825578ff05832644cfad60233fbRaph Levien public Builder setMaxLines(int maxLines) { 262d3ab692d28018825578ff05832644cfad60233fbRaph Levien mMaxLines = maxLines; 263d3ab692d28018825578ff05832644cfad60233fbRaph Levien return this; 264d3ab692d28018825578ff05832644cfad60233fbRaph Levien } 265d3ab692d28018825578ff05832644cfad60233fbRaph Levien 266531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien /** 267531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * Set break strategy, useful for selecting high quality or balanced paragraph 268531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * layout options. The default is {@link Layout#BREAK_STRATEGY_SIMPLE}. 269531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * 270531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @param breakStrategy break strategy for paragraph layout 271531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @return this builder, useful for chaining 272531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @see android.widget.TextView#setBreakStrategy 273531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien */ 27439b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien public Builder setBreakStrategy(@BreakStrategy int breakStrategy) { 27539b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien mBreakStrategy = breakStrategy; 27639b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien return this; 27739b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien } 27839b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien 279531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien /** 28095c7a13f2ac4f31ed3aaec9b47b9a29a3dbca978Roozbeh Pournader * Set hyphenation frequency, to control the amount of automatic hyphenation used. The 28195c7a13f2ac4f31ed3aaec9b47b9a29a3dbca978Roozbeh Pournader * default is {@link Layout#HYPHENATION_FREQUENCY_NONE}. 28295c7a13f2ac4f31ed3aaec9b47b9a29a3dbca978Roozbeh Pournader * 28395c7a13f2ac4f31ed3aaec9b47b9a29a3dbca978Roozbeh Pournader * @param hyphenationFrequency hyphenation frequency for the paragraph 28495c7a13f2ac4f31ed3aaec9b47b9a29a3dbca978Roozbeh Pournader * @return this builder, useful for chaining 28595c7a13f2ac4f31ed3aaec9b47b9a29a3dbca978Roozbeh Pournader * @see android.widget.TextView#setHyphenationFrequency 28695c7a13f2ac4f31ed3aaec9b47b9a29a3dbca978Roozbeh Pournader */ 28795c7a13f2ac4f31ed3aaec9b47b9a29a3dbca978Roozbeh Pournader public Builder setHyphenationFrequency(@HyphenationFrequency int hyphenationFrequency) { 28895c7a13f2ac4f31ed3aaec9b47b9a29a3dbca978Roozbeh Pournader mHyphenationFrequency = hyphenationFrequency; 28995c7a13f2ac4f31ed3aaec9b47b9a29a3dbca978Roozbeh Pournader return this; 29095c7a13f2ac4f31ed3aaec9b47b9a29a3dbca978Roozbeh Pournader } 29195c7a13f2ac4f31ed3aaec9b47b9a29a3dbca978Roozbeh Pournader 29295c7a13f2ac4f31ed3aaec9b47b9a29a3dbca978Roozbeh Pournader /** 293531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * Set indents. Arguments are arrays holding an indent amount, one per line, measured in 294531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * pixels. For lines past the last element in the array, the last element repeats. 295531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * 296531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @param leftIndents array of indent values for left margin, in pixels 297531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @param rightIndents array of indent values for right margin, in pixels 298531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @return this builder, useful for chaining 299531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @see android.widget.TextView#setIndents 300531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien */ 301e319d5a3627aa3cd73c6ec0c76f8593ddefbab9dRaph Levien public Builder setIndents(int[] leftIndents, int[] rightIndents) { 302e319d5a3627aa3cd73c6ec0c76f8593ddefbab9dRaph Levien int leftLen = leftIndents == null ? 0 : leftIndents.length; 303e319d5a3627aa3cd73c6ec0c76f8593ddefbab9dRaph Levien int rightLen = rightIndents == null ? 0 : rightIndents.length; 304e319d5a3627aa3cd73c6ec0c76f8593ddefbab9dRaph Levien int[] indents = new int[Math.max(leftLen, rightLen)]; 305e319d5a3627aa3cd73c6ec0c76f8593ddefbab9dRaph Levien for (int i = 0; i < indents.length; i++) { 306e319d5a3627aa3cd73c6ec0c76f8593ddefbab9dRaph Levien int leftMargin = i < leftLen ? leftIndents[i] : 0; 307e319d5a3627aa3cd73c6ec0c76f8593ddefbab9dRaph Levien int rightMargin = i < rightLen ? rightIndents[i] : 0; 308e319d5a3627aa3cd73c6ec0c76f8593ddefbab9dRaph Levien indents[i] = leftMargin + rightMargin; 309e319d5a3627aa3cd73c6ec0c76f8593ddefbab9dRaph Levien } 310e319d5a3627aa3cd73c6ec0c76f8593ddefbab9dRaph Levien nSetIndents(mNativePtr, indents); 311e319d5a3627aa3cd73c6ec0c76f8593ddefbab9dRaph Levien return this; 312e319d5a3627aa3cd73c6ec0c76f8593ddefbab9dRaph Levien } 313e319d5a3627aa3cd73c6ec0c76f8593ddefbab9dRaph Levien 31470616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien /** 31570616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien * Measurement and break iteration is done in native code. The protocol for using 31670616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien * the native code is as follows. 31770616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien * 31826d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien * For each paragraph, do a nSetupParagraph, which sets paragraph text, line width, tab 31995c7a13f2ac4f31ed3aaec9b47b9a29a3dbca978Roozbeh Pournader * stops, break strategy, and hyphenation frequency (and possibly other parameters in the 32095c7a13f2ac4f31ed3aaec9b47b9a29a3dbca978Roozbeh Pournader * future). 321c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien * 322c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien * Then, for each run within the paragraph: 32370616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien * - setLocale (this must be done at least for the first run, optional afterwards) 32470616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien * - one of the following, depending on the type of run: 32570616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien * + addStyleRun (a text run, to be measured in native code) 32670616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien * + addMeasuredRun (a run already measured in Java, passed into native code) 32770616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien * + addReplacementRun (a replacement run, width is given) 32870616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien * 32970616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien * After measurement, nGetWidths() is valid if the widths are needed (eg for ellipsis). 33070616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien * Run nComputeLineBreaks() to obtain line breaks for the paragraph. 33170616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien * 33270616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien * After all paragraphs, call finish() to release expensive buffers. 33370616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien */ 33470616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien 33570616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien private void setLocale(Locale locale) { 3364c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien if (!locale.equals(mLocale)) { 33726d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien nSetLocale(mNativePtr, locale.toLanguageTag(), Hyphenator.get(locale)); 3384c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien mLocale = locale; 3394c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien } 3404c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien } 3414c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien 34270616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien /* package */ float addStyleRun(TextPaint paint, int start, int end, boolean isRtl) { 34370616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien return nAddStyleRun(mNativePtr, paint.getNativeInstance(), paint.mNativeTypeface, 34470616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien start, end, isRtl); 34570616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien } 34670616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien 34770616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien /* package */ void addMeasuredRun(int start, int end, float[] widths) { 34870616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien nAddMeasuredRun(mNativePtr, start, end, widths); 34970616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien } 35070616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien 35170616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien /* package */ void addReplacementRun(int start, int end, float width) { 35270616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien nAddReplacementRun(mNativePtr, start, end, width); 35370616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien } 35470616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien 355531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien /** 356531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * Build the {@link StaticLayout} after options have been set. 357531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * 358531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * <p>Note: the builder object must not be reused in any way after calling this 359531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * method. Setting parameters after calling this method, or calling it a second 360531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * time on the same builder object, will likely lead to unexpected results. 361531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * 362531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @return the newly constructed {@link StaticLayout} object 363531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien */ 364d3ab692d28018825578ff05832644cfad60233fbRaph Levien public StaticLayout build() { 36539b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien StaticLayout result = new StaticLayout(this); 36639b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien Builder.recycle(this); 367d3ab692d28018825578ff05832644cfad60233fbRaph Levien return result; 368d3ab692d28018825578ff05832644cfad60233fbRaph Levien } 369d3ab692d28018825578ff05832644cfad60233fbRaph Levien 3704c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien @Override 3714c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien protected void finalize() throws Throwable { 3724c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien try { 3734c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien nFreeBuilder(mNativePtr); 3744c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien } finally { 3754c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien super.finalize(); 3764c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien } 3774c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien } 3784c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien 3794c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien /* package */ long mNativePtr; 3804c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien 381d3ab692d28018825578ff05832644cfad60233fbRaph Levien CharSequence mText; 382d3ab692d28018825578ff05832644cfad60233fbRaph Levien int mStart; 383d3ab692d28018825578ff05832644cfad60233fbRaph Levien int mEnd; 384d3ab692d28018825578ff05832644cfad60233fbRaph Levien TextPaint mPaint; 385d3ab692d28018825578ff05832644cfad60233fbRaph Levien int mWidth; 38639b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien Alignment mAlignment; 387d3ab692d28018825578ff05832644cfad60233fbRaph Levien TextDirectionHeuristic mTextDir; 388d3ab692d28018825578ff05832644cfad60233fbRaph Levien float mSpacingMult; 389d3ab692d28018825578ff05832644cfad60233fbRaph Levien float mSpacingAdd; 390d3ab692d28018825578ff05832644cfad60233fbRaph Levien boolean mIncludePad; 391d3ab692d28018825578ff05832644cfad60233fbRaph Levien int mEllipsizedWidth; 392d3ab692d28018825578ff05832644cfad60233fbRaph Levien TextUtils.TruncateAt mEllipsize; 393d3ab692d28018825578ff05832644cfad60233fbRaph Levien int mMaxLines; 39439b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien int mBreakStrategy; 39595c7a13f2ac4f31ed3aaec9b47b9a29a3dbca978Roozbeh Pournader int mHyphenationFrequency; 396d3ab692d28018825578ff05832644cfad60233fbRaph Levien 397d3ab692d28018825578ff05832644cfad60233fbRaph Levien Paint.FontMetricsInt mFontMetricsInt = new Paint.FontMetricsInt(); 398d3ab692d28018825578ff05832644cfad60233fbRaph Levien 399d3ab692d28018825578ff05832644cfad60233fbRaph Levien // This will go away and be subsumed by native builder code 400d3ab692d28018825578ff05832644cfad60233fbRaph Levien MeasuredText mMeasuredText; 401d3ab692d28018825578ff05832644cfad60233fbRaph Levien 4024c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien Locale mLocale; 4034c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien 40439b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien private static final SynchronizedPool<Builder> sPool = new SynchronizedPool<Builder>(3); 405d3ab692d28018825578ff05832644cfad60233fbRaph Levien } 406d3ab692d28018825578ff05832644cfad60233fbRaph Levien 4079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public StaticLayout(CharSequence source, TextPaint paint, 4089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int width, 4099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Alignment align, float spacingmult, float spacingadd, 4109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean includepad) { 4119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project this(source, 0, source.length(), paint, width, align, 4129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project spacingmult, spacingadd, includepad); 4139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 415cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt /** 416cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt * @hide 417cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt */ 418cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt public StaticLayout(CharSequence source, TextPaint paint, 419cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt int width, Alignment align, TextDirectionHeuristic textDir, 420cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt float spacingmult, float spacingadd, 421cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt boolean includepad) { 422cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt this(source, 0, source.length(), paint, width, align, textDir, 423cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt spacingmult, spacingadd, includepad); 424cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt } 425cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt 4269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public StaticLayout(CharSequence source, int bufstart, int bufend, 4279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project TextPaint paint, int outerwidth, 4289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Alignment align, 4299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float spacingmult, float spacingadd, 4309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean includepad) { 4319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project this(source, bufstart, bufend, paint, outerwidth, align, 4329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project spacingmult, spacingadd, includepad, null, 0); 4339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 435cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt /** 436cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt * @hide 437cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt */ 438cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt public StaticLayout(CharSequence source, int bufstart, int bufend, 439cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt TextPaint paint, int outerwidth, 440cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt Alignment align, TextDirectionHeuristic textDir, 441cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt float spacingmult, float spacingadd, 442cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt boolean includepad) { 443cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt this(source, bufstart, bufend, paint, outerwidth, align, textDir, 4448059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio spacingmult, spacingadd, includepad, null, 0, Integer.MAX_VALUE); 445cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt} 446cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt 447cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt public StaticLayout(CharSequence source, int bufstart, int bufend, 448cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt TextPaint paint, int outerwidth, 449cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt Alignment align, 450cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt float spacingmult, float spacingadd, 451cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt boolean includepad, 452cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt TextUtils.TruncateAt ellipsize, int ellipsizedWidth) { 453cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt this(source, bufstart, bufend, paint, outerwidth, align, 454cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt TextDirectionHeuristics.FIRSTSTRONG_LTR, 4558059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio spacingmult, spacingadd, includepad, ellipsize, ellipsizedWidth, Integer.MAX_VALUE); 456cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt } 457cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt 458cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt /** 459cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt * @hide 460cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt */ 4619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public StaticLayout(CharSequence source, int bufstart, int bufend, 4629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project TextPaint paint, int outerwidth, 463cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt Alignment align, TextDirectionHeuristic textDir, 4649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float spacingmult, float spacingadd, 4659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean includepad, 4668059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio TextUtils.TruncateAt ellipsize, int ellipsizedWidth, int maxLines) { 4679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super((ellipsize == null) 4684e0c5e55e171532760d5f51e0165563827129d4eDoug Felt ? source 4699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project : (source instanceof Spanned) 4709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ? new SpannedEllipsizer(source) 4719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project : new Ellipsizer(source), 472cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt paint, outerwidth, align, textDir, spacingmult, spacingadd); 4739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 474ebd66ca600dc2c43edb0830bcf1a92fafec30a5aRaph Levien Builder b = Builder.obtain(source, bufstart, bufend, paint, outerwidth) 47539b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien .setAlignment(align) 476a6a082862b9e2ea4c9e9a1a945927c4040993f6eRaph Levien .setTextDirection(textDir) 477531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien .setLineSpacing(spacingadd, spacingmult) 478d3ab692d28018825578ff05832644cfad60233fbRaph Levien .setIncludePad(includepad) 479d3ab692d28018825578ff05832644cfad60233fbRaph Levien .setEllipsizedWidth(ellipsizedWidth) 480d3ab692d28018825578ff05832644cfad60233fbRaph Levien .setEllipsize(ellipsize) 481d3ab692d28018825578ff05832644cfad60233fbRaph Levien .setMaxLines(maxLines); 4829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 4839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This is annoying, but we can't refer to the layout until 4849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * superclass construction is finished, and the superclass 4859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * constructor wants the reference to the display text. 4864e0c5e55e171532760d5f51e0165563827129d4eDoug Felt * 4879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This will break if the superclass constructor ever actually 4889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * cares about the content instead of just holding the reference. 4899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (ellipsize != null) { 4919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Ellipsizer e = (Ellipsizer) getText(); 4929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project e.mLayout = this; 4949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project e.mWidth = ellipsizedWidth; 4959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project e.mMethod = ellipsize; 4969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mEllipsizedWidth = ellipsizedWidth; 4979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mColumns = COLUMNS_ELLIPSIZE; 4999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 5009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mColumns = COLUMNS_NORMAL; 5019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mEllipsizedWidth = outerwidth; 5029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 504776abc24cdd18610232a50b997cce3cffa74609bAdam Lesinski mLineDirections = ArrayUtils.newUnpaddedArray(Directions.class, 2 * mColumns); 505776abc24cdd18610232a50b997cce3cffa74609bAdam Lesinski mLines = new int[mLineDirections.length]; 5068059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio mMaximumVisibleLineCount = maxLines; 5079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 50870616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien generate(b, b.mIncludePad, b.mIncludePad); 5099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 510d3ab692d28018825578ff05832644cfad60233fbRaph Levien Builder.recycle(b); 5119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5138059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio /* package */ StaticLayout(CharSequence text) { 5148059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio super(text, null, 0, null, 0, 0); 5159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mColumns = COLUMNS_ELLIPSIZE; 517776abc24cdd18610232a50b997cce3cffa74609bAdam Lesinski mLineDirections = ArrayUtils.newUnpaddedArray(Directions.class, 2 * mColumns); 518776abc24cdd18610232a50b997cce3cffa74609bAdam Lesinski mLines = new int[mLineDirections.length]; 5199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 52139b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien private StaticLayout(Builder b) { 52239b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien super((b.mEllipsize == null) 52339b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien ? b.mText 52439b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien : (b.mText instanceof Spanned) 52539b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien ? new SpannedEllipsizer(b.mText) 52639b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien : new Ellipsizer(b.mText), 52739b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien b.mPaint, b.mWidth, b.mAlignment, b.mSpacingMult, b.mSpacingAdd); 52839b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien 52939b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien if (b.mEllipsize != null) { 53039b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien Ellipsizer e = (Ellipsizer) getText(); 53139b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien 53239b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien e.mLayout = this; 53339b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien e.mWidth = b.mEllipsizedWidth; 53439b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien e.mMethod = b.mEllipsize; 53539b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien mEllipsizedWidth = b.mEllipsizedWidth; 53639b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien 53739b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien mColumns = COLUMNS_ELLIPSIZE; 53839b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien } else { 53939b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien mColumns = COLUMNS_NORMAL; 54039b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien mEllipsizedWidth = b.mWidth; 54139b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien } 54239b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien 54339b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien mLineDirections = ArrayUtils.newUnpaddedArray(Directions.class, 2 * mColumns); 54439b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien mLines = new int[mLineDirections.length]; 54539b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien mMaximumVisibleLineCount = b.mMaxLines; 54639b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien 54739b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien generate(b, b.mIncludePad, b.mIncludePad); 54839b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien } 54939b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien 550d3ab692d28018825578ff05832644cfad60233fbRaph Levien /* package */ void generate(Builder b, boolean includepad, boolean trackpad) { 551d3ab692d28018825578ff05832644cfad60233fbRaph Levien CharSequence source = b.mText; 552d3ab692d28018825578ff05832644cfad60233fbRaph Levien int bufStart = b.mStart; 553d3ab692d28018825578ff05832644cfad60233fbRaph Levien int bufEnd = b.mEnd; 554d3ab692d28018825578ff05832644cfad60233fbRaph Levien TextPaint paint = b.mPaint; 555d3ab692d28018825578ff05832644cfad60233fbRaph Levien int outerWidth = b.mWidth; 556d3ab692d28018825578ff05832644cfad60233fbRaph Levien TextDirectionHeuristic textDir = b.mTextDir; 557d3ab692d28018825578ff05832644cfad60233fbRaph Levien float spacingmult = b.mSpacingMult; 558d3ab692d28018825578ff05832644cfad60233fbRaph Levien float spacingadd = b.mSpacingAdd; 559d3ab692d28018825578ff05832644cfad60233fbRaph Levien float ellipsizedWidth = b.mEllipsizedWidth; 560d3ab692d28018825578ff05832644cfad60233fbRaph Levien TextUtils.TruncateAt ellipsize = b.mEllipsize; 5614c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien LineBreaks lineBreaks = new LineBreaks(); // TODO: move to builder to avoid allocation costs 562c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye // store span end locations 563c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye int[] spanEndCache = new int[4]; 564c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye // store fontMetrics per span range 565c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye // must be a multiple of 4 (and > 0) (store top, bottom, ascent, and descent per range) 566c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye int[] fmCache = new int[4 * 4]; 5674c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien b.setLocale(paint.getTextLocale()); // TODO: also respect LocaleSpan within the text 56888b5b0be887fc5dc3b0b879b4179dde200d2e4d6Anish Athalye 5699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLineCount = 0; 5709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int v = 0; 5729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean needMultiply = (spacingmult != 1 || spacingadd != 0); 5739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 574d3ab692d28018825578ff05832644cfad60233fbRaph Levien Paint.FontMetricsInt fm = b.mFontMetricsInt; 575121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio int[] chooseHtv = null; 5769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 577d3ab692d28018825578ff05832644cfad60233fbRaph Levien MeasuredText measured = b.mMeasuredText; 5789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Spanned spanned = null; 5809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (source instanceof Spanned) 5819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project spanned = (Spanned) source; 5829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 583e8e45f2c05cb3b6d23f30c8f96d8e0b3699cea7aDoug Felt int paraEnd; 584121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio for (int paraStart = bufStart; paraStart <= bufEnd; paraStart = paraEnd) { 585121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio paraEnd = TextUtils.indexOf(source, CHAR_NEW_LINE, paraStart, bufEnd); 586e8e45f2c05cb3b6d23f30c8f96d8e0b3699cea7aDoug Felt if (paraEnd < 0) 587121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio paraEnd = bufEnd; 5889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project else 589e8e45f2c05cb3b6d23f30c8f96d8e0b3699cea7aDoug Felt paraEnd++; 5909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 591c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye int firstWidthLineCount = 1; 592121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio int firstWidth = outerWidth; 593121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio int restWidth = outerWidth; 5949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 595121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio LineHeightSpan[] chooseHt = null; 5969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (spanned != null) { 59874d31ef2b2c42b54fa1f7cf94ea955ea67ab69a0Eric Fischer LeadingMarginSpan[] sp = getParagraphSpans(spanned, paraStart, paraEnd, 599e8e45f2c05cb3b6d23f30c8f96d8e0b3699cea7aDoug Felt LeadingMarginSpan.class); 6009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < sp.length; i++) { 6017b5676e4d40a09ccdbc8b6f691a3d8be23e480d3Mark Wagner LeadingMarginSpan lms = sp[i]; 602121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio firstWidth -= sp[i].getLeadingMargin(true); 603121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio restWidth -= sp[i].getLeadingMargin(false); 604cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt 605c982f60e982c1d2df9f115ed9a5c3ef3643d0892Doug Felt // LeadingMarginSpan2 is odd. The count affects all 606ab08c6d38ab2e575f809ca8ce4c7f095e49d258cAnish Athalye // leading margin spans, not just this particular one 607c982f60e982c1d2df9f115ed9a5c3ef3643d0892Doug Felt if (lms instanceof LeadingMarginSpan2) { 608c982f60e982c1d2df9f115ed9a5c3ef3643d0892Doug Felt LeadingMarginSpan2 lms2 = (LeadingMarginSpan2) lms; 609c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye firstWidthLineCount = Math.max(firstWidthLineCount, 610c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye lms2.getLeadingMarginLineCount()); 6117b5676e4d40a09ccdbc8b6f691a3d8be23e480d3Mark Wagner } 6129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 614121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio chooseHt = getParagraphSpans(spanned, paraStart, paraEnd, LineHeightSpan.class); 6159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 616121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio if (chooseHt.length != 0) { 617121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio if (chooseHtv == null || 618121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio chooseHtv.length < chooseHt.length) { 619776abc24cdd18610232a50b997cce3cffa74609bAdam Lesinski chooseHtv = ArrayUtils.newUnpaddedIntArray(chooseHt.length); 6209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 622121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio for (int i = 0; i < chooseHt.length; i++) { 623121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio int o = spanned.getSpanStart(chooseHt[i]); 6249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 625e8e45f2c05cb3b6d23f30c8f96d8e0b3699cea7aDoug Felt if (o < paraStart) { 6269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // starts in this layout, before the 6279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // current paragraph 6289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 629121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio chooseHtv[i] = getLineTop(getLineForOffset(o)); 6309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 6319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // starts in this paragraph 6329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 633121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio chooseHtv[i] = v; 6349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 63970616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien measured.setPara(source, paraStart, paraEnd, textDir, b); 640e8e45f2c05cb3b6d23f30c8f96d8e0b3699cea7aDoug Felt char[] chs = measured.mChars; 641e8e45f2c05cb3b6d23f30c8f96d8e0b3699cea7aDoug Felt float[] widths = measured.mWidths; 642e8e45f2c05cb3b6d23f30c8f96d8e0b3699cea7aDoug Felt byte[] chdirs = measured.mLevels; 643e8e45f2c05cb3b6d23f30c8f96d8e0b3699cea7aDoug Felt int dir = measured.mDir; 644e8e45f2c05cb3b6d23f30c8f96d8e0b3699cea7aDoug Felt boolean easy = measured.mEasy; 645c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien 646c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien // tab stop locations 647c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien int[] variableTabStops = null; 648c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien if (spanned != null) { 649c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien TabStopSpan[] spans = getParagraphSpans(spanned, paraStart, 650c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien paraEnd, TabStopSpan.class); 651c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien if (spans.length > 0) { 652c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien int[] stops = new int[spans.length]; 653c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien for (int i = 0; i < spans.length; i++) { 654c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien stops[i] = spans[i].getTabStop(); 655c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien } 656c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien Arrays.sort(stops, 0, stops.length); 657c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien variableTabStops = stops; 658c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien } 659c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien } 660c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien 661c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien nSetupParagraph(b.mNativePtr, chs, paraEnd - paraStart, 662c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien firstWidth, firstWidthLineCount, restWidth, 66395c7a13f2ac4f31ed3aaec9b47b9a29a3dbca978Roozbeh Pournader variableTabStops, TAB_INCREMENT, b.mBreakStrategy, b.mHyphenationFrequency); 6649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 665c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye // measurement has to be done before performing line breaking 666c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye // but we don't want to recompute fontmetrics or span ranges the 667c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye // second time, so we cache those and then use those stored values 668c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye int fmCacheCount = 0; 669c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye int spanEndCacheCount = 0; 670cd943a7a013952af9b7286fd506fd63bf0993ac1Gilles Debunne for (int spanStart = paraStart, spanEnd; spanStart < paraEnd; spanStart = spanEnd) { 671c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye if (fmCacheCount * 4 >= fmCache.length) { 672c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye int[] grow = new int[fmCacheCount * 4 * 2]; 673c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye System.arraycopy(fmCache, 0, grow, 0, fmCacheCount * 4); 674c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye fmCache = grow; 675c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye } 676c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye 677c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye if (spanEndCacheCount >= spanEndCache.length) { 678c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye int[] grow = new int[spanEndCacheCount * 2]; 679c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye System.arraycopy(spanEndCache, 0, grow, 0, spanEndCacheCount); 680c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye spanEndCache = grow; 681c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye } 68223241887515ed77687c23e29a4a3ffff671666bdDoug Felt 683cd943a7a013952af9b7286fd506fd63bf0993ac1Gilles Debunne if (spanned == null) { 684cd943a7a013952af9b7286fd506fd63bf0993ac1Gilles Debunne spanEnd = paraEnd; 68523241887515ed77687c23e29a4a3ffff671666bdDoug Felt int spanLen = spanEnd - spanStart; 686cd943a7a013952af9b7286fd506fd63bf0993ac1Gilles Debunne measured.addStyleRun(paint, spanLen, fm); 687cd943a7a013952af9b7286fd506fd63bf0993ac1Gilles Debunne } else { 688cd943a7a013952af9b7286fd506fd63bf0993ac1Gilles Debunne spanEnd = spanned.nextSpanTransition(spanStart, paraEnd, 689cd943a7a013952af9b7286fd506fd63bf0993ac1Gilles Debunne MetricAffectingSpan.class); 690cd943a7a013952af9b7286fd506fd63bf0993ac1Gilles Debunne int spanLen = spanEnd - spanStart; 691cd943a7a013952af9b7286fd506fd63bf0993ac1Gilles Debunne MetricAffectingSpan[] spans = 69223241887515ed77687c23e29a4a3ffff671666bdDoug Felt spanned.getSpans(spanStart, spanEnd, MetricAffectingSpan.class); 693cd943a7a013952af9b7286fd506fd63bf0993ac1Gilles Debunne spans = TextUtils.removeEmptySpans(spans, spanned, MetricAffectingSpan.class); 694cd943a7a013952af9b7286fd506fd63bf0993ac1Gilles Debunne measured.addStyleRun(paint, spans, spanLen, fm); 69523241887515ed77687c23e29a4a3ffff671666bdDoug Felt } 69623241887515ed77687c23e29a4a3ffff671666bdDoug Felt 697c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye // the order of storage here (top, bottom, ascent, descent) has to match the code below 698c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye // where these values are retrieved 699c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye fmCache[fmCacheCount * 4 + 0] = fm.top; 700c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye fmCache[fmCacheCount * 4 + 1] = fm.bottom; 701c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye fmCache[fmCacheCount * 4 + 2] = fm.ascent; 702c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye fmCache[fmCacheCount * 4 + 3] = fm.descent; 703c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye fmCacheCount++; 704c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye 705c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye spanEndCache[spanEndCacheCount] = spanEnd; 706c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye spanEndCacheCount++; 707c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye } 708c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye 70970616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien nGetWidths(b.mNativePtr, widths); 710c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien int breakCount = nComputeLineBreaks(b.mNativePtr, lineBreaks, lineBreaks.breaks, 711c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien lineBreaks.widths, lineBreaks.flags, lineBreaks.breaks.length); 71281541491946bfc4f2e26c171b4ebff4249dca51cGilles Debunne 713c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye int[] breaks = lineBreaks.breaks; 714c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye float[] lineWidths = lineBreaks.widths; 71526d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien int[] flags = lineBreaks.flags; 7169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 717f4a3f3a03c72b6a38dc2f3f965531dc2a12460dfKeisuke Kuroyanagi final int remainingLineCount = mMaximumVisibleLineCount - mLineCount; 718f4a3f3a03c72b6a38dc2f3f965531dc2a12460dfKeisuke Kuroyanagi final boolean ellipsisMayBeApplied = ellipsize != null 719f4a3f3a03c72b6a38dc2f3f965531dc2a12460dfKeisuke Kuroyanagi && (ellipsize == TextUtils.TruncateAt.END 720f4a3f3a03c72b6a38dc2f3f965531dc2a12460dfKeisuke Kuroyanagi || (mMaximumVisibleLineCount == 1 721f4a3f3a03c72b6a38dc2f3f965531dc2a12460dfKeisuke Kuroyanagi && ellipsize != TextUtils.TruncateAt.MARQUEE)); 722f4a3f3a03c72b6a38dc2f3f965531dc2a12460dfKeisuke Kuroyanagi if (remainingLineCount < breakCount && ellipsisMayBeApplied) { 723f4a3f3a03c72b6a38dc2f3f965531dc2a12460dfKeisuke Kuroyanagi // Treat the last line and overflowed lines as a single line. 724f4a3f3a03c72b6a38dc2f3f965531dc2a12460dfKeisuke Kuroyanagi breaks[remainingLineCount - 1] = breaks[breakCount - 1]; 725f4a3f3a03c72b6a38dc2f3f965531dc2a12460dfKeisuke Kuroyanagi // Calculate width and flag. 726f4a3f3a03c72b6a38dc2f3f965531dc2a12460dfKeisuke Kuroyanagi float width = 0; 727f4a3f3a03c72b6a38dc2f3f965531dc2a12460dfKeisuke Kuroyanagi int flag = 0; 728f4a3f3a03c72b6a38dc2f3f965531dc2a12460dfKeisuke Kuroyanagi for (int i = remainingLineCount - 1; i < breakCount; i++) { 729f4a3f3a03c72b6a38dc2f3f965531dc2a12460dfKeisuke Kuroyanagi width += lineWidths[i]; 730f4a3f3a03c72b6a38dc2f3f965531dc2a12460dfKeisuke Kuroyanagi flag |= flags[i] & TAB_MASK; 731f4a3f3a03c72b6a38dc2f3f965531dc2a12460dfKeisuke Kuroyanagi } 732f4a3f3a03c72b6a38dc2f3f965531dc2a12460dfKeisuke Kuroyanagi lineWidths[remainingLineCount - 1] = width; 733f4a3f3a03c72b6a38dc2f3f965531dc2a12460dfKeisuke Kuroyanagi flags[remainingLineCount - 1] = flag; 734f4a3f3a03c72b6a38dc2f3f965531dc2a12460dfKeisuke Kuroyanagi 735f4a3f3a03c72b6a38dc2f3f965531dc2a12460dfKeisuke Kuroyanagi breakCount = remainingLineCount; 736f4a3f3a03c72b6a38dc2f3f965531dc2a12460dfKeisuke Kuroyanagi } 737f4a3f3a03c72b6a38dc2f3f965531dc2a12460dfKeisuke Kuroyanagi 738c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye // here is the offset of the starting character of the line we are currently measuring 739c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye int here = paraStart; 740d300e75eff0d5e54390400cbd3f80dc4cea8b617Gilles Debunne 741c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye int fmTop = 0, fmBottom = 0, fmAscent = 0, fmDescent = 0; 742c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye int fmCacheIndex = 0; 743c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye int spanEndCacheIndex = 0; 744c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye int breakIndex = 0; 745c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye for (int spanStart = paraStart, spanEnd; spanStart < paraEnd; spanStart = spanEnd) { 746c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye // retrieve end of span 747c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye spanEnd = spanEndCache[spanEndCacheIndex++]; 748c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye 749c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye // retrieve cached metrics, order matches above 750c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye fm.top = fmCache[fmCacheIndex * 4 + 0]; 751c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye fm.bottom = fmCache[fmCacheIndex * 4 + 1]; 752c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye fm.ascent = fmCache[fmCacheIndex * 4 + 2]; 753c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye fm.descent = fmCache[fmCacheIndex * 4 + 3]; 754c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye fmCacheIndex++; 755c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye 756c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye if (fm.top < fmTop) { 757c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye fmTop = fm.top; 758c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye } 759c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye if (fm.ascent < fmAscent) { 760c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye fmAscent = fm.ascent; 761c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye } 762c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye if (fm.descent > fmDescent) { 763c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye fmDescent = fm.descent; 764c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye } 765c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye if (fm.bottom > fmBottom) { 766c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye fmBottom = fm.bottom; 767c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye } 768cd943a7a013952af9b7286fd506fd63bf0993ac1Gilles Debunne 769c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye // skip breaks ending before current span range 770c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye while (breakIndex < breakCount && paraStart + breaks[breakIndex] < spanStart) { 771c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye breakIndex++; 772c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye } 77381541491946bfc4f2e26c171b4ebff4249dca51cGilles Debunne 774c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye while (breakIndex < breakCount && paraStart + breaks[breakIndex] <= spanEnd) { 775c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye int endPos = paraStart + breaks[breakIndex]; 776c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye 777ce4155a204144ae5462f547f7738af24be5a1f77Raph Levien boolean moreChars = (endPos < bufEnd); 7784c02e831728daf9374b52e2fe3fdbf7ce982bfc4Raph Levien 779c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye v = out(source, here, endPos, 780c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye fmAscent, fmDescent, fmTop, fmBottom, 781c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye v, spacingmult, spacingadd, chooseHt,chooseHtv, fm, flags[breakIndex], 782c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye needMultiply, chdirs, dir, easy, bufEnd, includepad, trackpad, 783c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye chs, widths, paraStart, ellipsize, ellipsizedWidth, 7844c02e831728daf9374b52e2fe3fdbf7ce982bfc4Raph Levien lineWidths[breakIndex], paint, moreChars); 785c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye 786c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye if (endPos < spanEnd) { 787c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye // preserve metrics for current span 788c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye fmTop = fm.top; 789c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye fmBottom = fm.bottom; 790c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye fmAscent = fm.ascent; 791c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye fmDescent = fm.descent; 792c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye } else { 793c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye fmTop = fmBottom = fmAscent = fmDescent = 0; 7948059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio } 7959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 796c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye here = endPos; 797c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye breakIndex++; 7989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 799c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye if (mLineCount >= mMaximumVisibleLineCount) { 800c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye return; 801c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye } 8029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 805121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio if (paraEnd == bufEnd) 8069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 8079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8098059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio if ((bufEnd == bufStart || source.charAt(bufEnd - 1) == CHAR_NEW_LINE) && 810ad0b051b133baf92f199c96a8ac1e81b3393190cFabrice Di Meglio mLineCount < mMaximumVisibleLineCount) { 811121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio // Log.e("text", "output last " + bufEnd); 8129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 81370616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien measured.setPara(source, bufEnd, bufEnd, textDir, b); 814e631889e1ae7edc6a2fae495ba504f85820b6a4bFabrice Di Meglio 8159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project paint.getFontMetricsInt(fm); 8169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project v = out(source, 818121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio bufEnd, bufEnd, fm.ascent, fm.descent, 8199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fm.top, fm.bottom, 8209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project v, 8219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project spacingmult, spacingadd, null, 82226d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien null, fm, 0, 823e631889e1ae7edc6a2fae495ba504f85820b6a4bFabrice Di Meglio needMultiply, measured.mLevels, measured.mDir, measured.mEasy, bufEnd, 824d300e75eff0d5e54390400cbd3f80dc4cea8b617Gilles Debunne includepad, trackpad, null, 825d300e75eff0d5e54390400cbd3f80dc4cea8b617Gilles Debunne null, bufStart, ellipsize, 826d300e75eff0d5e54390400cbd3f80dc4cea8b617Gilles Debunne ellipsizedWidth, 0, paint, false); 8279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int out(CharSequence text, int start, int end, 8319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int above, int below, int top, int bottom, int v, 8329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float spacingmult, float spacingadd, 833121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio LineHeightSpan[] chooseHt, int[] chooseHtv, 83426d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien Paint.FontMetricsInt fm, int flags, 835d300e75eff0d5e54390400cbd3f80dc4cea8b617Gilles Debunne boolean needMultiply, byte[] chdirs, int dir, 836d300e75eff0d5e54390400cbd3f80dc4cea8b617Gilles Debunne boolean easy, int bufEnd, boolean includePad, 837d300e75eff0d5e54390400cbd3f80dc4cea8b617Gilles Debunne boolean trackPad, char[] chs, 838d300e75eff0d5e54390400cbd3f80dc4cea8b617Gilles Debunne float[] widths, int widthStart, TextUtils.TruncateAt ellipsize, 839d300e75eff0d5e54390400cbd3f80dc4cea8b617Gilles Debunne float ellipsisWidth, float textWidth, 840d300e75eff0d5e54390400cbd3f80dc4cea8b617Gilles Debunne TextPaint paint, boolean moreChars) { 8419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int j = mLineCount; 8429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int off = j * mColumns; 8439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int want = off + mColumns + TOP; 8449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int[] lines = mLines; 8459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (want >= lines.length) { 847776abc24cdd18610232a50b997cce3cffa74609bAdam Lesinski Directions[] grow2 = ArrayUtils.newUnpaddedArray( 848776abc24cdd18610232a50b997cce3cffa74609bAdam Lesinski Directions.class, GrowingArrayUtils.growSize(want)); 8499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project System.arraycopy(mLineDirections, 0, grow2, 0, 8509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLineDirections.length); 8519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLineDirections = grow2; 852776abc24cdd18610232a50b997cce3cffa74609bAdam Lesinski 853776abc24cdd18610232a50b997cce3cffa74609bAdam Lesinski int[] grow = new int[grow2.length]; 854776abc24cdd18610232a50b997cce3cffa74609bAdam Lesinski System.arraycopy(lines, 0, grow, 0, lines.length); 855776abc24cdd18610232a50b997cce3cffa74609bAdam Lesinski mLines = grow; 856776abc24cdd18610232a50b997cce3cffa74609bAdam Lesinski lines = grow; 8579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 859121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio if (chooseHt != null) { 8609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fm.ascent = above; 8619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fm.descent = below; 8629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fm.top = top; 8639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fm.bottom = bottom; 8649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 865121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio for (int i = 0; i < chooseHt.length; i++) { 866121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio if (chooseHt[i] instanceof LineHeightSpan.WithDensity) { 867121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio ((LineHeightSpan.WithDensity) chooseHt[i]). 868121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio chooseHeight(text, start, end, chooseHtv[i], v, fm, paint); 869a9f1dd021f8f6ee777bc4d27913bd40c42e753afEric Fischer 870a9f1dd021f8f6ee777bc4d27913bd40c42e753afEric Fischer } else { 871121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio chooseHt[i].chooseHeight(text, start, end, chooseHtv[i], v, fm); 872a9f1dd021f8f6ee777bc4d27913bd40c42e753afEric Fischer } 8739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project above = fm.ascent; 8769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project below = fm.descent; 8779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project top = fm.top; 8789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project bottom = fm.bottom; 8799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 881d97b097a5b7a906e8d30c6d3b0f41c55650ce7a9Raph Levien boolean firstLine = (j == 0); 882d97b097a5b7a906e8d30c6d3b0f41c55650ce7a9Raph Levien boolean currentLineIsTheLastVisibleOne = (j + 1 == mMaximumVisibleLineCount); 883d97b097a5b7a906e8d30c6d3b0f41c55650ce7a9Raph Levien boolean lastLine = currentLineIsTheLastVisibleOne || (end == bufEnd); 884d97b097a5b7a906e8d30c6d3b0f41c55650ce7a9Raph Levien 885d97b097a5b7a906e8d30c6d3b0f41c55650ce7a9Raph Levien if (firstLine) { 886121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio if (trackPad) { 8879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTopPadding = top - above; 8889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 890121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio if (includePad) { 8919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project above = top; 8929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 894d97b097a5b7a906e8d30c6d3b0f41c55650ce7a9Raph Levien 895d97b097a5b7a906e8d30c6d3b0f41c55650ce7a9Raph Levien int extra; 896d97b097a5b7a906e8d30c6d3b0f41c55650ce7a9Raph Levien 897d97b097a5b7a906e8d30c6d3b0f41c55650ce7a9Raph Levien if (lastLine) { 898121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio if (trackPad) { 8999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBottomPadding = bottom - below; 9009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 902121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio if (includePad) { 9039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project below = bottom; 9049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 908d97b097a5b7a906e8d30c6d3b0f41c55650ce7a9Raph Levien if (needMultiply && !lastLine) { 9091065758a0f8966a8597a61492112f7859a7050a4Doug Felt double ex = (below - above) * (spacingmult - 1) + spacingadd; 9101065758a0f8966a8597a61492112f7859a7050a4Doug Felt if (ex >= 0) { 911121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio extra = (int)(ex + EXTRA_ROUNDING); 9121065758a0f8966a8597a61492112f7859a7050a4Doug Felt } else { 913121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio extra = -(int)(-ex + EXTRA_ROUNDING); 9141065758a0f8966a8597a61492112f7859a7050a4Doug Felt } 9159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 9169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project extra = 0; 9179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lines[off + START] = start; 9209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lines[off + TOP] = v; 9219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lines[off + DESCENT] = below + extra; 9229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project v += (below - above) + extra; 9249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lines[off + mColumns + START] = end; 9259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lines[off + mColumns + TOP] = v; 9269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 92726d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien // TODO: could move TAB to share same column as HYPHEN, simplifying this code and gaining 92826d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien // one bit for start field 92926d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien lines[off + TAB] |= flags & TAB_MASK; 93026d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien lines[off + HYPHEN] = flags; 9319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9329f7a4442b89cc06cb8cae6992484e7ae795323abDoug Felt lines[off + DIR] |= dir << DIR_SHIFT; 9339f7a4442b89cc06cb8cae6992484e7ae795323abDoug Felt Directions linedirs = DIRS_ALL_LEFT_TO_RIGHT; 9349f7a4442b89cc06cb8cae6992484e7ae795323abDoug Felt // easy means all chars < the first RTL, so no emoji, no nothing 9354e0c5e55e171532760d5f51e0165563827129d4eDoug Felt // XXX a run with no text or all spaces is easy but might be an empty 9369f7a4442b89cc06cb8cae6992484e7ae795323abDoug Felt // RTL paragraph. Make sure easy is false if this is the case. 9379f7a4442b89cc06cb8cae6992484e7ae795323abDoug Felt if (easy) { 9389f7a4442b89cc06cb8cae6992484e7ae795323abDoug Felt mLineDirections[j] = linedirs; 9399f7a4442b89cc06cb8cae6992484e7ae795323abDoug Felt } else { 940f3fa0cdbaea109b114f7facbb5d42de3fc12bbc8Gilles Debunne mLineDirections[j] = AndroidBidi.directions(dir, chdirs, start - widthStart, chs, 941f3fa0cdbaea109b114f7facbb5d42de3fc12bbc8Gilles Debunne start - widthStart, end - start); 9420a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne } 9439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 944aef455fd5b4c667267deb050bc7997e737b7507eFabrice Di Meglio if (ellipsize != null) { 945aef455fd5b4c667267deb050bc7997e737b7507eFabrice Di Meglio // If there is only one line, then do any type of ellipsis except when it is MARQUEE 946aef455fd5b4c667267deb050bc7997e737b7507eFabrice Di Meglio // if there are multiple lines, just allow END ellipsis on the last line 9478059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio boolean forceEllipsis = moreChars && (mLineCount + 1 == mMaximumVisibleLineCount); 948aef455fd5b4c667267deb050bc7997e737b7507eFabrice Di Meglio 94934a126e51aaf22e32c7af808ec6b5a0c41ae3311Fabrice Di Meglio boolean doEllipsis = 95034a126e51aaf22e32c7af808ec6b5a0c41ae3311Fabrice Di Meglio (((mMaximumVisibleLineCount == 1 && moreChars) || (firstLine && !moreChars)) && 951aef455fd5b4c667267deb050bc7997e737b7507eFabrice Di Meglio ellipsize != TextUtils.TruncateAt.MARQUEE) || 952aef455fd5b4c667267deb050bc7997e737b7507eFabrice Di Meglio (!firstLine && (currentLineIsTheLastVisibleOne || !moreChars) && 953aef455fd5b4c667267deb050bc7997e737b7507eFabrice Di Meglio ellipsize == TextUtils.TruncateAt.END); 954aef455fd5b4c667267deb050bc7997e737b7507eFabrice Di Meglio if (doEllipsis) { 955aef455fd5b4c667267deb050bc7997e737b7507eFabrice Di Meglio calculateEllipsis(start, end, widths, widthStart, 956aef455fd5b4c667267deb050bc7997e737b7507eFabrice Di Meglio ellipsisWidth, ellipsize, j, 957aef455fd5b4c667267deb050bc7997e737b7507eFabrice Di Meglio textWidth, paint, forceEllipsis); 958aef455fd5b4c667267deb050bc7997e737b7507eFabrice Di Meglio } 9599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLineCount++; 9629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return v; 9639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 965121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio private void calculateEllipsis(int lineStart, int lineEnd, 966121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio float[] widths, int widthStart, 9679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float avail, TextUtils.TruncateAt where, 9688059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio int line, float textWidth, TextPaint paint, 9698059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio boolean forceEllipsis) { 9708059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio if (textWidth <= avail && !forceEllipsis) { 9719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Everything fits! 9729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLines[mColumns * line + ELLIPSIS_START] = 0; 9739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLines[mColumns * line + ELLIPSIS_COUNT] = 0; 9749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 9759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 977cb332649e44db86ff8b4e7f006db4bbfd82fed55Fabrice Di Meglio float ellipsisWidth = paint.measureText( 9788d44fff7e62f77c3b3072a96712cc1389e63ca64Fabrice Di Meglio (where == TextUtils.TruncateAt.END_SMALL) ? 979d29bdb266d54b4551f42776bb790e80147a279d0Neil Fuller TextUtils.ELLIPSIS_TWO_DOTS : TextUtils.ELLIPSIS_NORMAL, 0, 1); 9808059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio int ellipsisStart = 0; 9818059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio int ellipsisCount = 0; 982121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio int len = lineEnd - lineStart; 9839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9848059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio // We only support start ellipsis on a single line 9859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (where == TextUtils.TruncateAt.START) { 9868059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio if (mMaximumVisibleLineCount == 1) { 9878059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio float sum = 0; 9888059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio int i; 9899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 990ed2eea1bfc1fb57d3b34f2c1e6062b541737e73eKeisuke Kuroyanagi for (i = len; i > 0; i--) { 9918059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio float w = widths[i - 1 + lineStart - widthStart]; 9929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9938059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio if (w + sum + ellipsisWidth > avail) { 9948059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio break; 9958059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio } 9968059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio 9978059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio sum += w; 9989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10008059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio ellipsisStart = 0; 10018059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio ellipsisCount = i; 10028059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio } else { 10038059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio if (Log.isLoggable(TAG, Log.WARN)) { 10048059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio Log.w(TAG, "Start Ellipsis only supported with one line"); 10058059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio } 10069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1007cb332649e44db86ff8b4e7f006db4bbfd82fed55Fabrice Di Meglio } else if (where == TextUtils.TruncateAt.END || where == TextUtils.TruncateAt.MARQUEE || 1008cb332649e44db86ff8b4e7f006db4bbfd82fed55Fabrice Di Meglio where == TextUtils.TruncateAt.END_SMALL) { 10099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float sum = 0; 10109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int i; 10119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (i = 0; i < len; i++) { 1013121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio float w = widths[i + lineStart - widthStart]; 10149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1015121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio if (w + sum + ellipsisWidth > avail) { 10169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 10179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sum += w; 10209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ellipsisStart = i; 10239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ellipsisCount = len - i; 1024aef455fd5b4c667267deb050bc7997e737b7507eFabrice Di Meglio if (forceEllipsis && ellipsisCount == 0 && len > 0) { 1025aef455fd5b4c667267deb050bc7997e737b7507eFabrice Di Meglio ellipsisStart = len - 1; 10268059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio ellipsisCount = 1; 10278059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio } 10288059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio } else { 10298059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio // where = TextUtils.TruncateAt.MIDDLE We only support middle ellipsis on a single line 10308059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio if (mMaximumVisibleLineCount == 1) { 10318059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio float lsum = 0, rsum = 0; 10328059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio int left = 0, right = len; 10339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10348059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio float ravail = (avail - ellipsisWidth) / 2; 10350e3c5e827235911d33312e431975533f046421e7Raph Levien for (right = len; right > 0; right--) { 10368059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio float w = widths[right - 1 + lineStart - widthStart]; 10379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10388059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio if (w + rsum > ravail) { 10398059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio break; 10408059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio } 10418059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio 10428059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio rsum += w; 10439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10458059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio float lavail = avail - ellipsisWidth - rsum; 10468059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio for (left = 0; left < right; left++) { 10478059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio float w = widths[left + lineStart - widthStart]; 10489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10498059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio if (w + lsum > lavail) { 10508059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio break; 10518059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio } 10529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10538059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio lsum += w; 10549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10568059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio ellipsisStart = left; 10578059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio ellipsisCount = right - left; 10588059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio } else { 10598059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio if (Log.isLoggable(TAG, Log.WARN)) { 10608059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio Log.w(TAG, "Middle Ellipsis only supported with one line"); 10618059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio } 10629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLines[mColumns * line + ELLIPSIS_START] = ellipsisStart; 10669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLines[mColumns * line + ELLIPSIS_COUNT] = ellipsisCount; 10679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1069e8e45f2c05cb3b6d23f30c8f96d8e0b3699cea7aDoug Felt // Override the base class so we can directly access our members, 10709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // rather than relying on member functions. 10719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // The logic mirrors that of Layout.getLineForVertical 10729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // FIXME: It may be faster to do a linear search for layouts without many lines. 10736611147383118cd91cc29b31bff9aaf4c853f39dGilles Debunne @Override 10749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getLineForVertical(int vertical) { 10759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int high = mLineCount; 10769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int low = -1; 10779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int guess; 10789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int[] lines = mLines; 10799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project while (high - low > 1) { 10809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project guess = (high + low) >> 1; 10819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (lines[mColumns * guess + TOP] > vertical){ 10829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project high = guess; 10839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 10849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project low = guess; 10859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (low < 0) { 10889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 10899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 10909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return low; 10919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10946611147383118cd91cc29b31bff9aaf4c853f39dGilles Debunne @Override 10959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getLineCount() { 10969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mLineCount; 10979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10996611147383118cd91cc29b31bff9aaf4c853f39dGilles Debunne @Override 11009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getLineTop(int line) { 11010a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne int top = mLines[mColumns * line + TOP]; 11020a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne if (mMaximumVisibleLineCount > 0 && line >= mMaximumVisibleLineCount && 11030a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne line != mLineCount) { 11040a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne top += getBottomPadding(); 11050a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne } 11060a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne return top; 11079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11096611147383118cd91cc29b31bff9aaf4c853f39dGilles Debunne @Override 11109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getLineDescent(int line) { 11110a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne int descent = mLines[mColumns * line + DESCENT]; 1112f3fa0cdbaea109b114f7facbb5d42de3fc12bbc8Gilles Debunne if (mMaximumVisibleLineCount > 0 && line >= mMaximumVisibleLineCount - 1 && // -1 intended 11130a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne line != mLineCount) { 11140a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne descent += getBottomPadding(); 11150a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne } 11160a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne return descent; 11179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11196611147383118cd91cc29b31bff9aaf4c853f39dGilles Debunne @Override 11209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getLineStart(int line) { 11219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mLines[mColumns * line + START] & START_MASK; 11229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11246611147383118cd91cc29b31bff9aaf4c853f39dGilles Debunne @Override 11259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getParagraphDirection(int line) { 11269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mLines[mColumns * line + DIR] >> DIR_SHIFT; 11279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11296611147383118cd91cc29b31bff9aaf4c853f39dGilles Debunne @Override 11309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean getLineContainsTab(int line) { 11319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (mLines[mColumns * line + TAB] & TAB_MASK) != 0; 11329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11346611147383118cd91cc29b31bff9aaf4c853f39dGilles Debunne @Override 11359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public final Directions getLineDirections(int line) { 11369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mLineDirections[line]; 11379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11396611147383118cd91cc29b31bff9aaf4c853f39dGilles Debunne @Override 11409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getTopPadding() { 11419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mTopPadding; 11429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11446611147383118cd91cc29b31bff9aaf4c853f39dGilles Debunne @Override 11459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getBottomPadding() { 11469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mBottomPadding; 11479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 114926d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien /** 115026d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien * @hide 115126d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien */ 115226d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien @Override 115326d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien public int getHyphen(int line) { 115426d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien return mLines[mColumns * line + HYPHEN] & 0xff; 115526d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien } 115626d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien 11579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 11589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getEllipsisCount(int line) { 11599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mColumns < COLUMNS_ELLIPSIZE) { 11609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 11619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mLines[mColumns * line + ELLIPSIS_COUNT]; 11649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 11679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getEllipsisStart(int line) { 11689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mColumns < COLUMNS_ELLIPSIZE) { 11699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 11709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mLines[mColumns * line + ELLIPSIS_START]; 11739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 11769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getEllipsizedWidth() { 11779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mEllipsizedWidth; 11789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 118070616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien private static native long nNewBuilder(); 118170616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien private static native void nFreeBuilder(long nativePtr); 118270616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien private static native void nFinishBuilder(long nativePtr); 118326d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien 118426d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien /* package */ static native long nLoadHyphenator(String patternData); 118526d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien 118626d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien private static native void nSetLocale(long nativePtr, String locale, long nativeHyphenator); 118770616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien 1188e319d5a3627aa3cd73c6ec0c76f8593ddefbab9dRaph Levien private static native void nSetIndents(long nativePtr, int[] indents); 1189e319d5a3627aa3cd73c6ec0c76f8593ddefbab9dRaph Levien 1190c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien // Set up paragraph text and settings; done as one big method to minimize jni crossings 1191c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien private static native void nSetupParagraph(long nativePtr, char[] text, int length, 1192c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien float firstWidth, int firstWidthLineCount, float restWidth, 119395c7a13f2ac4f31ed3aaec9b47b9a29a3dbca978Roozbeh Pournader int[] variableTabStops, int defaultTabStop, int breakStrategy, int hyphenationFrequency); 119470616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien 119570616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien private static native float nAddStyleRun(long nativePtr, long nativePaint, 119670616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien long nativeTypeface, int start, int end, boolean isRtl); 119770616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien 119870616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien private static native void nAddMeasuredRun(long nativePtr, 119970616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien int start, int end, float[] widths); 120070616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien 120170616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien private static native void nAddReplacementRun(long nativePtr, int start, int end, float width); 120270616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien 120370616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien private static native void nGetWidths(long nativePtr, float[] widths); 120470616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien 1205c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye // populates LineBreaks and returns the number of breaks found 1206c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye // 1207c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye // the arrays inside the LineBreaks objects are passed in as well 1208c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye // to reduce the number of JNI calls in the common case where the 1209c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye // arrays do not have to be resized 1210c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien private static native int nComputeLineBreaks(long nativePtr, LineBreaks recycle, 121126d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien int[] recycleBreaks, float[] recycleWidths, int[] recycleFlags, int recycleLength); 121288b5b0be887fc5dc3b0b879b4179dde200d2e4d6Anish Athalye 12139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mLineCount; 12149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mTopPadding, mBottomPadding; 12159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mColumns; 12169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mEllipsizedWidth; 12179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 121826d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien private static final int COLUMNS_NORMAL = 4; 121926d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien private static final int COLUMNS_ELLIPSIZE = 6; 12209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int START = 0; 12219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int DIR = START; 12229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int TAB = START; 12239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int TOP = 1; 12249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int DESCENT = 2; 122526d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien private static final int HYPHEN = 3; 122626d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien private static final int ELLIPSIS_START = 4; 122726d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien private static final int ELLIPSIS_COUNT = 5; 12289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int[] mLines; 12309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private Directions[] mLineDirections; 12318059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio private int mMaximumVisibleLineCount = Integer.MAX_VALUE; 12329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int START_MASK = 0x1FFFFFFF; 12349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int DIR_SHIFT = 30; 12359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int TAB_MASK = 0x20000000; 12369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1237c982f60e982c1d2df9f115ed9a5c3ef3643d0892Doug Felt private static final int TAB_INCREMENT = 20; // same as Layout, but that's private 12389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1239121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio private static final char CHAR_NEW_LINE = '\n'; 1240121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio 1241121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio private static final double EXTRA_ROUNDING = 0.5; 1242cb332649e44db86ff8b4e7f006db4bbfd82fed55Fabrice Di Meglio 1243c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye // This is used to return three arrays from a single JNI call when 1244c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye // performing line breaking 12457053919a3a55ad1b58e6db701afda18850037732Deepanshu Gupta /*package*/ static class LineBreaks { 1246c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye private static final int INITIAL_SIZE = 16; 1247c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye public int[] breaks = new int[INITIAL_SIZE]; 1248c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye public float[] widths = new float[INITIAL_SIZE]; 124926d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien public int[] flags = new int[INITIAL_SIZE]; // hasTabOrEmoji 1250c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye // breaks, widths, and flags should all have the same length 1251c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye } 1252c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye 12539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 1254