StaticLayout.java revision 531c30c62b14881aab31a5133920a971b1fbb50e
19066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/* 29066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Copyright (C) 2006 The Android Open Source Project 39066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 49066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 59066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * you may not use this file except in compliance with the License. 69066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * You may obtain a copy of the License at 79066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 89066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 99066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * See the License for the specific language governing permissions and 149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * limitations under the License. 159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpackage android.text; 189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 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; 94d3ab692d28018825578ff05832644cfad60233fbRaph Levien 95d3ab692d28018825578ff05832644cfad60233fbRaph Levien b.mMeasuredText = MeasuredText.obtain(); 96d3ab692d28018825578ff05832644cfad60233fbRaph Levien return b; 97d3ab692d28018825578ff05832644cfad60233fbRaph Levien } 98d3ab692d28018825578ff05832644cfad60233fbRaph Levien 9939b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien private static void recycle(Builder b) { 100d3ab692d28018825578ff05832644cfad60233fbRaph Levien b.mPaint = null; 101d3ab692d28018825578ff05832644cfad60233fbRaph Levien b.mText = null; 102d3ab692d28018825578ff05832644cfad60233fbRaph Levien MeasuredText.recycle(b.mMeasuredText); 10339b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien sPool.release(b); 104d3ab692d28018825578ff05832644cfad60233fbRaph Levien } 105d3ab692d28018825578ff05832644cfad60233fbRaph Levien 106d3ab692d28018825578ff05832644cfad60233fbRaph Levien // release any expensive state 107d3ab692d28018825578ff05832644cfad60233fbRaph Levien /* package */ void finish() { 1084c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien nFinishBuilder(mNativePtr); 109d3ab692d28018825578ff05832644cfad60233fbRaph Levien mMeasuredText.finish(); 110d3ab692d28018825578ff05832644cfad60233fbRaph Levien } 111d3ab692d28018825578ff05832644cfad60233fbRaph Levien 112d3ab692d28018825578ff05832644cfad60233fbRaph Levien public Builder setText(CharSequence source) { 113d3ab692d28018825578ff05832644cfad60233fbRaph Levien return setText(source, 0, source.length()); 114d3ab692d28018825578ff05832644cfad60233fbRaph Levien } 115d3ab692d28018825578ff05832644cfad60233fbRaph Levien 116531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien /** 117531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * Set the text. Only useful when re-using the builder, which is done for 118531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * the internal implementation of {@link DynamicLayout} but not as part 119531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * of normal {@link StaticLayout} usage. 120531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * 121531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @param source The text to be laid out, optionally with spans 122531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @param start The index of the start of the text 123531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @param end The index + 1 of the end of the text 124531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @return this builder, useful for chaining 125531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * 126531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @hide 127531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien */ 128d3ab692d28018825578ff05832644cfad60233fbRaph Levien public Builder setText(CharSequence source, int start, int end) { 129d3ab692d28018825578ff05832644cfad60233fbRaph Levien mText = source; 130d3ab692d28018825578ff05832644cfad60233fbRaph Levien mStart = start; 131d3ab692d28018825578ff05832644cfad60233fbRaph Levien mEnd = end; 132d3ab692d28018825578ff05832644cfad60233fbRaph Levien return this; 133d3ab692d28018825578ff05832644cfad60233fbRaph Levien } 134d3ab692d28018825578ff05832644cfad60233fbRaph Levien 135531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien /** 136531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * Set the paint. Internal for reuse cases only. 137531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * 138531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @param paint The base paint used for layout 139531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @return this builder, useful for chaining 140531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * 141531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @hide 142531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien */ 143d3ab692d28018825578ff05832644cfad60233fbRaph Levien public Builder setPaint(TextPaint paint) { 144d3ab692d28018825578ff05832644cfad60233fbRaph Levien mPaint = paint; 145d3ab692d28018825578ff05832644cfad60233fbRaph Levien return this; 146d3ab692d28018825578ff05832644cfad60233fbRaph Levien } 147d3ab692d28018825578ff05832644cfad60233fbRaph Levien 148531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien /** 149531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * Set the width. Internal for reuse cases only. 150531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * 151531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @param width The width in pixels 152531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @return this builder, useful for chaining 153531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * 154531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @hide 155531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien */ 156d3ab692d28018825578ff05832644cfad60233fbRaph Levien public Builder setWidth(int width) { 157d3ab692d28018825578ff05832644cfad60233fbRaph Levien mWidth = width; 158d3ab692d28018825578ff05832644cfad60233fbRaph Levien if (mEllipsize == null) { 159d3ab692d28018825578ff05832644cfad60233fbRaph Levien mEllipsizedWidth = width; 160d3ab692d28018825578ff05832644cfad60233fbRaph Levien } 161d3ab692d28018825578ff05832644cfad60233fbRaph Levien return this; 162d3ab692d28018825578ff05832644cfad60233fbRaph Levien } 163d3ab692d28018825578ff05832644cfad60233fbRaph Levien 164531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien /** 165531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * Set the alignment. The default is {@link Layout.Alignment#ALIGN_NORMAL}. 166531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * 167531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @param alignment Alignment for the resulting {@link StaticLayout} 168531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @return this builder, useful for chaining 169531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien */ 17039b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien public Builder setAlignment(Alignment alignment) { 17139b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien mAlignment = alignment; 17239b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien return this; 17339b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien } 17439b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien 175531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien /** 176531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * Set the text direction heuristic. The text direction heuristic is used to 177531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * resolve text direction based per-paragraph based on the input text. The default is 178531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * {@link TextDirectionHeuristics#FIRSTSTRONG_LTR}. 179531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * 180531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @param textDir text direction heuristic for resolving BiDi behavior. 181531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @return this builder, useful for chaining 182531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien */ 183d3ab692d28018825578ff05832644cfad60233fbRaph Levien public Builder setTextDir(TextDirectionHeuristic textDir) { 184d3ab692d28018825578ff05832644cfad60233fbRaph Levien mTextDir = textDir; 185d3ab692d28018825578ff05832644cfad60233fbRaph Levien return this; 186d3ab692d28018825578ff05832644cfad60233fbRaph Levien } 187d3ab692d28018825578ff05832644cfad60233fbRaph Levien 188531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien /** 189531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * Set line spacing parameters. The default is 0.0 for {@code spacingAdd} 190531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * and 1.0 for {@code spacingMult}. 191531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * 192531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @param spacingAdd line spacing add 193531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @param spacingMult line spacing multiplier 194531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @return this builder, useful for chaining 195531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @see android.widget.TextView#setLineSpacing 196531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien */ 197531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien public Builder setLineSpacing(float spacingAdd, float spacingMult) { 198d3ab692d28018825578ff05832644cfad60233fbRaph Levien mSpacingAdd = spacingAdd; 199531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien mSpacingMult = spacingMult; 200d3ab692d28018825578ff05832644cfad60233fbRaph Levien return this; 201d3ab692d28018825578ff05832644cfad60233fbRaph Levien } 202d3ab692d28018825578ff05832644cfad60233fbRaph Levien 203531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien /** 204531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * Set whether to include extra space beyond font ascent and descent (which is 205531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * needed to avoid clipping in some languages, such as Arabic and Kannada). The 206531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * default is {@code true}. 207531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * 208531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @param includePad whether to include padding 209531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @return this builder, useful for chaining 210531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @see android.widget.TextView#setIncludeFontPadding 211531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien */ 212d3ab692d28018825578ff05832644cfad60233fbRaph Levien public Builder setIncludePad(boolean includePad) { 213d3ab692d28018825578ff05832644cfad60233fbRaph Levien mIncludePad = includePad; 214d3ab692d28018825578ff05832644cfad60233fbRaph Levien return this; 215d3ab692d28018825578ff05832644cfad60233fbRaph Levien } 216d3ab692d28018825578ff05832644cfad60233fbRaph Levien 217531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien /** 218531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * Set the width as used for ellipsizing purposes, if it differs from the 219531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * normal layout width. The default is the {@code width} 220531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * passed to {@link #obtain}. 221531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * 222531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @param ellipsizedWidth width used for ellipsizing, in pixels 223531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @return this builder, useful for chaining 224531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @see android.widget.TextView#setEllipsize 225531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien */ 226d3ab692d28018825578ff05832644cfad60233fbRaph Levien public Builder setEllipsizedWidth(int ellipsizedWidth) { 227d3ab692d28018825578ff05832644cfad60233fbRaph Levien mEllipsizedWidth = ellipsizedWidth; 228d3ab692d28018825578ff05832644cfad60233fbRaph Levien return this; 229d3ab692d28018825578ff05832644cfad60233fbRaph Levien } 230d3ab692d28018825578ff05832644cfad60233fbRaph Levien 231531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien /** 232531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * Set ellipsizing on the layout. Causes words that are longer than the view 233531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * is wide, or exceeding the number of lines (see #setMaxLines) in the case 234531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * of {@link android.text.TextUtils.TruncateAt#END} or 235531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * {@link android.text.TextUtils.TruncateAt#MARQUEE}, to be ellipsized instead 236531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * of broken. The default is 237531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * {@code null}, indicating no ellipsis is to be applied. 238531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * 239531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @param ellipsize type of ellipsis behavior 240531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @return this builder, useful for chaining 241531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @see android.widget.TextView#setEllipsize 242531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien */ 243531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien public Builder setEllipsize(@Nullable TextUtils.TruncateAt ellipsize) { 244d3ab692d28018825578ff05832644cfad60233fbRaph Levien mEllipsize = ellipsize; 245d3ab692d28018825578ff05832644cfad60233fbRaph Levien return this; 246d3ab692d28018825578ff05832644cfad60233fbRaph Levien } 247d3ab692d28018825578ff05832644cfad60233fbRaph Levien 248531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien /** 249531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * Set maximum number of lines. This is particularly useful in the case of 250531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * ellipsizing, where it changes the layout of the last line. The default is 251531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * unlimited. 252531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * 253531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @param maxLines maximum number of lines in the layout 254531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @return this builder, useful for chaining 255531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @see android.widget.TextView#setMaxLines 256531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien */ 257d3ab692d28018825578ff05832644cfad60233fbRaph Levien public Builder setMaxLines(int maxLines) { 258d3ab692d28018825578ff05832644cfad60233fbRaph Levien mMaxLines = maxLines; 259d3ab692d28018825578ff05832644cfad60233fbRaph Levien return this; 260d3ab692d28018825578ff05832644cfad60233fbRaph Levien } 261d3ab692d28018825578ff05832644cfad60233fbRaph Levien 262531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien /** 263531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * Set break strategy, useful for selecting high quality or balanced paragraph 264531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * layout options. The default is {@link Layout#BREAK_STRATEGY_SIMPLE}. 265531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * 266531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @param breakStrategy break strategy for paragraph layout 267531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @return this builder, useful for chaining 268531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @see android.widget.TextView#setBreakStrategy 269531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien */ 27039b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien public Builder setBreakStrategy(@BreakStrategy int breakStrategy) { 27139b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien mBreakStrategy = breakStrategy; 27239b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien return this; 27339b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien } 27439b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien 275531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien /** 276531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * Set indents. Arguments are arrays holding an indent amount, one per line, measured in 277531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * pixels. For lines past the last element in the array, the last element repeats. 278531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * 279531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @param leftIndents array of indent values for left margin, in pixels 280531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @param rightIndents array of indent values for right margin, in pixels 281531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @return this builder, useful for chaining 282531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @see android.widget.TextView#setIndents 283531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien */ 284e319d5a3627aa3cd73c6ec0c76f8593ddefbab9dRaph Levien public Builder setIndents(int[] leftIndents, int[] rightIndents) { 285e319d5a3627aa3cd73c6ec0c76f8593ddefbab9dRaph Levien int leftLen = leftIndents == null ? 0 : leftIndents.length; 286e319d5a3627aa3cd73c6ec0c76f8593ddefbab9dRaph Levien int rightLen = rightIndents == null ? 0 : rightIndents.length; 287e319d5a3627aa3cd73c6ec0c76f8593ddefbab9dRaph Levien int[] indents = new int[Math.max(leftLen, rightLen)]; 288e319d5a3627aa3cd73c6ec0c76f8593ddefbab9dRaph Levien for (int i = 0; i < indents.length; i++) { 289e319d5a3627aa3cd73c6ec0c76f8593ddefbab9dRaph Levien int leftMargin = i < leftLen ? leftIndents[i] : 0; 290e319d5a3627aa3cd73c6ec0c76f8593ddefbab9dRaph Levien int rightMargin = i < rightLen ? rightIndents[i] : 0; 291e319d5a3627aa3cd73c6ec0c76f8593ddefbab9dRaph Levien indents[i] = leftMargin + rightMargin; 292e319d5a3627aa3cd73c6ec0c76f8593ddefbab9dRaph Levien } 293e319d5a3627aa3cd73c6ec0c76f8593ddefbab9dRaph Levien nSetIndents(mNativePtr, indents); 294e319d5a3627aa3cd73c6ec0c76f8593ddefbab9dRaph Levien return this; 295e319d5a3627aa3cd73c6ec0c76f8593ddefbab9dRaph Levien } 296e319d5a3627aa3cd73c6ec0c76f8593ddefbab9dRaph Levien 29770616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien /** 29870616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien * Measurement and break iteration is done in native code. The protocol for using 29970616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien * the native code is as follows. 30070616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien * 30126d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien * For each paragraph, do a nSetupParagraph, which sets paragraph text, line width, tab 30226d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien * stops, break strategy (and possibly other parameters in the future). 303c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien * 304c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien * Then, for each run within the paragraph: 30570616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien * - setLocale (this must be done at least for the first run, optional afterwards) 30670616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien * - one of the following, depending on the type of run: 30770616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien * + addStyleRun (a text run, to be measured in native code) 30870616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien * + addMeasuredRun (a run already measured in Java, passed into native code) 30970616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien * + addReplacementRun (a replacement run, width is given) 31070616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien * 31170616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien * After measurement, nGetWidths() is valid if the widths are needed (eg for ellipsis). 31270616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien * Run nComputeLineBreaks() to obtain line breaks for the paragraph. 31370616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien * 31470616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien * After all paragraphs, call finish() to release expensive buffers. 31570616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien */ 31670616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien 31770616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien private void setLocale(Locale locale) { 3184c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien if (!locale.equals(mLocale)) { 31926d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien nSetLocale(mNativePtr, locale.toLanguageTag(), Hyphenator.get(locale)); 3204c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien mLocale = locale; 3214c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien } 3224c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien } 3234c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien 32470616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien /* package */ float addStyleRun(TextPaint paint, int start, int end, boolean isRtl) { 32570616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien return nAddStyleRun(mNativePtr, paint.getNativeInstance(), paint.mNativeTypeface, 32670616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien start, end, isRtl); 32770616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien } 32870616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien 32970616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien /* package */ void addMeasuredRun(int start, int end, float[] widths) { 33070616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien nAddMeasuredRun(mNativePtr, start, end, widths); 33170616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien } 33270616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien 33370616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien /* package */ void addReplacementRun(int start, int end, float width) { 33470616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien nAddReplacementRun(mNativePtr, start, end, width); 33570616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien } 33670616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien 337531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien /** 338531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * Build the {@link StaticLayout} after options have been set. 339531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * 340531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * <p>Note: the builder object must not be reused in any way after calling this 341531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * method. Setting parameters after calling this method, or calling it a second 342531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * time on the same builder object, will likely lead to unexpected results. 343531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * 344531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien * @return the newly constructed {@link StaticLayout} object 345531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien */ 346d3ab692d28018825578ff05832644cfad60233fbRaph Levien public StaticLayout build() { 34739b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien StaticLayout result = new StaticLayout(this); 34839b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien Builder.recycle(this); 349d3ab692d28018825578ff05832644cfad60233fbRaph Levien return result; 350d3ab692d28018825578ff05832644cfad60233fbRaph Levien } 351d3ab692d28018825578ff05832644cfad60233fbRaph Levien 3524c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien @Override 3534c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien protected void finalize() throws Throwable { 3544c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien try { 3554c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien nFreeBuilder(mNativePtr); 3564c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien } finally { 3574c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien super.finalize(); 3584c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien } 3594c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien } 3604c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien 3614c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien /* package */ long mNativePtr; 3624c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien 363d3ab692d28018825578ff05832644cfad60233fbRaph Levien CharSequence mText; 364d3ab692d28018825578ff05832644cfad60233fbRaph Levien int mStart; 365d3ab692d28018825578ff05832644cfad60233fbRaph Levien int mEnd; 366d3ab692d28018825578ff05832644cfad60233fbRaph Levien TextPaint mPaint; 367d3ab692d28018825578ff05832644cfad60233fbRaph Levien int mWidth; 36839b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien Alignment mAlignment; 369d3ab692d28018825578ff05832644cfad60233fbRaph Levien TextDirectionHeuristic mTextDir; 370d3ab692d28018825578ff05832644cfad60233fbRaph Levien float mSpacingMult; 371d3ab692d28018825578ff05832644cfad60233fbRaph Levien float mSpacingAdd; 372d3ab692d28018825578ff05832644cfad60233fbRaph Levien boolean mIncludePad; 373d3ab692d28018825578ff05832644cfad60233fbRaph Levien int mEllipsizedWidth; 374d3ab692d28018825578ff05832644cfad60233fbRaph Levien TextUtils.TruncateAt mEllipsize; 375d3ab692d28018825578ff05832644cfad60233fbRaph Levien int mMaxLines; 37639b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien int mBreakStrategy; 377d3ab692d28018825578ff05832644cfad60233fbRaph Levien 378d3ab692d28018825578ff05832644cfad60233fbRaph Levien Paint.FontMetricsInt mFontMetricsInt = new Paint.FontMetricsInt(); 379d3ab692d28018825578ff05832644cfad60233fbRaph Levien 380d3ab692d28018825578ff05832644cfad60233fbRaph Levien // This will go away and be subsumed by native builder code 381d3ab692d28018825578ff05832644cfad60233fbRaph Levien MeasuredText mMeasuredText; 382d3ab692d28018825578ff05832644cfad60233fbRaph Levien 3834c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien Locale mLocale; 3844c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien 38539b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien private static final SynchronizedPool<Builder> sPool = new SynchronizedPool<Builder>(3); 386d3ab692d28018825578ff05832644cfad60233fbRaph Levien } 387d3ab692d28018825578ff05832644cfad60233fbRaph Levien 3889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public StaticLayout(CharSequence source, TextPaint paint, 3899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int width, 3909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Alignment align, float spacingmult, float spacingadd, 3919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean includepad) { 3929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project this(source, 0, source.length(), paint, width, align, 3939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project spacingmult, spacingadd, includepad); 3949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 396cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt /** 397cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt * @hide 398cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt */ 399cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt public StaticLayout(CharSequence source, TextPaint paint, 400cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt int width, Alignment align, TextDirectionHeuristic textDir, 401cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt float spacingmult, float spacingadd, 402cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt boolean includepad) { 403cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt this(source, 0, source.length(), paint, width, align, textDir, 404cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt spacingmult, spacingadd, includepad); 405cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt } 406cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt 4079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public StaticLayout(CharSequence source, int bufstart, int bufend, 4089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project TextPaint paint, int outerwidth, 4099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Alignment align, 4109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float spacingmult, float spacingadd, 4119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean includepad) { 4129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project this(source, bufstart, bufend, paint, outerwidth, align, 4139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project spacingmult, spacingadd, includepad, null, 0); 4149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 416cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt /** 417cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt * @hide 418cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt */ 419cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt public StaticLayout(CharSequence source, int bufstart, int bufend, 420cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt TextPaint paint, int outerwidth, 421cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt Alignment align, TextDirectionHeuristic textDir, 422cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt float spacingmult, float spacingadd, 423cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt boolean includepad) { 424cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt this(source, bufstart, bufend, paint, outerwidth, align, textDir, 4258059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio spacingmult, spacingadd, includepad, null, 0, Integer.MAX_VALUE); 426cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt} 427cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt 428cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt public StaticLayout(CharSequence source, int bufstart, int bufend, 429cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt TextPaint paint, int outerwidth, 430cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt Alignment align, 431cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt float spacingmult, float spacingadd, 432cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt boolean includepad, 433cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt TextUtils.TruncateAt ellipsize, int ellipsizedWidth) { 434cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt this(source, bufstart, bufend, paint, outerwidth, align, 435cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt TextDirectionHeuristics.FIRSTSTRONG_LTR, 4368059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio spacingmult, spacingadd, includepad, ellipsize, ellipsizedWidth, Integer.MAX_VALUE); 437cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt } 438cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt 439cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt /** 440cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt * @hide 441cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt */ 4429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public StaticLayout(CharSequence source, int bufstart, int bufend, 4439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project TextPaint paint, int outerwidth, 444cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt Alignment align, TextDirectionHeuristic textDir, 4459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float spacingmult, float spacingadd, 4469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean includepad, 4478059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio TextUtils.TruncateAt ellipsize, int ellipsizedWidth, int maxLines) { 4489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super((ellipsize == null) 4494e0c5e55e171532760d5f51e0165563827129d4eDoug Felt ? source 4509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project : (source instanceof Spanned) 4519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ? new SpannedEllipsizer(source) 4529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project : new Ellipsizer(source), 453cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt paint, outerwidth, align, textDir, spacingmult, spacingadd); 4549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 455ebd66ca600dc2c43edb0830bcf1a92fafec30a5aRaph Levien Builder b = Builder.obtain(source, bufstart, bufend, paint, outerwidth) 45639b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien .setAlignment(align) 457d3ab692d28018825578ff05832644cfad60233fbRaph Levien .setTextDir(textDir) 458531c30c62b14881aab31a5133920a971b1fbb50eRaph Levien .setLineSpacing(spacingadd, spacingmult) 459d3ab692d28018825578ff05832644cfad60233fbRaph Levien .setIncludePad(includepad) 460d3ab692d28018825578ff05832644cfad60233fbRaph Levien .setEllipsizedWidth(ellipsizedWidth) 461d3ab692d28018825578ff05832644cfad60233fbRaph Levien .setEllipsize(ellipsize) 462d3ab692d28018825578ff05832644cfad60233fbRaph Levien .setMaxLines(maxLines); 4639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 4649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This is annoying, but we can't refer to the layout until 4659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * superclass construction is finished, and the superclass 4669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * constructor wants the reference to the display text. 4674e0c5e55e171532760d5f51e0165563827129d4eDoug Felt * 4689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This will break if the superclass constructor ever actually 4699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * cares about the content instead of just holding the reference. 4709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (ellipsize != null) { 4729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Ellipsizer e = (Ellipsizer) getText(); 4739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project e.mLayout = this; 4759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project e.mWidth = ellipsizedWidth; 4769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project e.mMethod = ellipsize; 4779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mEllipsizedWidth = ellipsizedWidth; 4789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mColumns = COLUMNS_ELLIPSIZE; 4809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 4819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mColumns = COLUMNS_NORMAL; 4829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mEllipsizedWidth = outerwidth; 4839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 485776abc24cdd18610232a50b997cce3cffa74609bAdam Lesinski mLineDirections = ArrayUtils.newUnpaddedArray(Directions.class, 2 * mColumns); 486776abc24cdd18610232a50b997cce3cffa74609bAdam Lesinski mLines = new int[mLineDirections.length]; 4878059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio mMaximumVisibleLineCount = maxLines; 4889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 48970616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien generate(b, b.mIncludePad, b.mIncludePad); 4909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 491d3ab692d28018825578ff05832644cfad60233fbRaph Levien Builder.recycle(b); 4929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4948059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio /* package */ StaticLayout(CharSequence text) { 4958059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio super(text, null, 0, null, 0, 0); 4969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mColumns = COLUMNS_ELLIPSIZE; 498776abc24cdd18610232a50b997cce3cffa74609bAdam Lesinski mLineDirections = ArrayUtils.newUnpaddedArray(Directions.class, 2 * mColumns); 499776abc24cdd18610232a50b997cce3cffa74609bAdam Lesinski mLines = new int[mLineDirections.length]; 5009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 50239b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien private StaticLayout(Builder b) { 50339b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien super((b.mEllipsize == null) 50439b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien ? b.mText 50539b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien : (b.mText instanceof Spanned) 50639b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien ? new SpannedEllipsizer(b.mText) 50739b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien : new Ellipsizer(b.mText), 50839b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien b.mPaint, b.mWidth, b.mAlignment, b.mSpacingMult, b.mSpacingAdd); 50939b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien 51039b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien if (b.mEllipsize != null) { 51139b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien Ellipsizer e = (Ellipsizer) getText(); 51239b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien 51339b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien e.mLayout = this; 51439b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien e.mWidth = b.mEllipsizedWidth; 51539b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien e.mMethod = b.mEllipsize; 51639b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien mEllipsizedWidth = b.mEllipsizedWidth; 51739b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien 51839b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien mColumns = COLUMNS_ELLIPSIZE; 51939b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien } else { 52039b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien mColumns = COLUMNS_NORMAL; 52139b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien mEllipsizedWidth = b.mWidth; 52239b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien } 52339b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien 52439b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien mLineDirections = ArrayUtils.newUnpaddedArray(Directions.class, 2 * mColumns); 52539b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien mLines = new int[mLineDirections.length]; 52639b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien mMaximumVisibleLineCount = b.mMaxLines; 52739b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien 52839b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien generate(b, b.mIncludePad, b.mIncludePad); 52939b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien } 53039b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien 531d3ab692d28018825578ff05832644cfad60233fbRaph Levien /* package */ void generate(Builder b, boolean includepad, boolean trackpad) { 532d3ab692d28018825578ff05832644cfad60233fbRaph Levien CharSequence source = b.mText; 533d3ab692d28018825578ff05832644cfad60233fbRaph Levien int bufStart = b.mStart; 534d3ab692d28018825578ff05832644cfad60233fbRaph Levien int bufEnd = b.mEnd; 535d3ab692d28018825578ff05832644cfad60233fbRaph Levien TextPaint paint = b.mPaint; 536d3ab692d28018825578ff05832644cfad60233fbRaph Levien int outerWidth = b.mWidth; 537d3ab692d28018825578ff05832644cfad60233fbRaph Levien TextDirectionHeuristic textDir = b.mTextDir; 538d3ab692d28018825578ff05832644cfad60233fbRaph Levien float spacingmult = b.mSpacingMult; 539d3ab692d28018825578ff05832644cfad60233fbRaph Levien float spacingadd = b.mSpacingAdd; 540d3ab692d28018825578ff05832644cfad60233fbRaph Levien float ellipsizedWidth = b.mEllipsizedWidth; 541d3ab692d28018825578ff05832644cfad60233fbRaph Levien TextUtils.TruncateAt ellipsize = b.mEllipsize; 5424c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien LineBreaks lineBreaks = new LineBreaks(); // TODO: move to builder to avoid allocation costs 543c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye // store span end locations 544c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye int[] spanEndCache = new int[4]; 545c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye // store fontMetrics per span range 546c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye // must be a multiple of 4 (and > 0) (store top, bottom, ascent, and descent per range) 547c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye int[] fmCache = new int[4 * 4]; 5484c1f12efcf24e404df40f19075eb95a148a9d6a1Raph Levien b.setLocale(paint.getTextLocale()); // TODO: also respect LocaleSpan within the text 54988b5b0be887fc5dc3b0b879b4179dde200d2e4d6Anish Athalye 5509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLineCount = 0; 5519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int v = 0; 5539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean needMultiply = (spacingmult != 1 || spacingadd != 0); 5549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 555d3ab692d28018825578ff05832644cfad60233fbRaph Levien Paint.FontMetricsInt fm = b.mFontMetricsInt; 556121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio int[] chooseHtv = null; 5579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 558d3ab692d28018825578ff05832644cfad60233fbRaph Levien MeasuredText measured = b.mMeasuredText; 5599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Spanned spanned = null; 5619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (source instanceof Spanned) 5629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project spanned = (Spanned) source; 5639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 564e8e45f2c05cb3b6d23f30c8f96d8e0b3699cea7aDoug Felt int paraEnd; 565121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio for (int paraStart = bufStart; paraStart <= bufEnd; paraStart = paraEnd) { 566121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio paraEnd = TextUtils.indexOf(source, CHAR_NEW_LINE, paraStart, bufEnd); 567e8e45f2c05cb3b6d23f30c8f96d8e0b3699cea7aDoug Felt if (paraEnd < 0) 568121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio paraEnd = bufEnd; 5699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project else 570e8e45f2c05cb3b6d23f30c8f96d8e0b3699cea7aDoug Felt paraEnd++; 5719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 572c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye int firstWidthLineCount = 1; 573121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio int firstWidth = outerWidth; 574121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio int restWidth = outerWidth; 5759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 576121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio LineHeightSpan[] chooseHt = null; 5779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (spanned != null) { 57974d31ef2b2c42b54fa1f7cf94ea955ea67ab69a0Eric Fischer LeadingMarginSpan[] sp = getParagraphSpans(spanned, paraStart, paraEnd, 580e8e45f2c05cb3b6d23f30c8f96d8e0b3699cea7aDoug Felt LeadingMarginSpan.class); 5819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < sp.length; i++) { 5827b5676e4d40a09ccdbc8b6f691a3d8be23e480d3Mark Wagner LeadingMarginSpan lms = sp[i]; 583121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio firstWidth -= sp[i].getLeadingMargin(true); 584121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio restWidth -= sp[i].getLeadingMargin(false); 585cb379120456d8065d742021fc5c66748fc8a11a8Doug Felt 586c982f60e982c1d2df9f115ed9a5c3ef3643d0892Doug Felt // LeadingMarginSpan2 is odd. The count affects all 587ab08c6d38ab2e575f809ca8ce4c7f095e49d258cAnish Athalye // leading margin spans, not just this particular one 588c982f60e982c1d2df9f115ed9a5c3ef3643d0892Doug Felt if (lms instanceof LeadingMarginSpan2) { 589c982f60e982c1d2df9f115ed9a5c3ef3643d0892Doug Felt LeadingMarginSpan2 lms2 = (LeadingMarginSpan2) lms; 590c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye firstWidthLineCount = Math.max(firstWidthLineCount, 591c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye lms2.getLeadingMarginLineCount()); 5927b5676e4d40a09ccdbc8b6f691a3d8be23e480d3Mark Wagner } 5939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 595121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio chooseHt = getParagraphSpans(spanned, paraStart, paraEnd, LineHeightSpan.class); 5969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 597121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio if (chooseHt.length != 0) { 598121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio if (chooseHtv == null || 599121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio chooseHtv.length < chooseHt.length) { 600776abc24cdd18610232a50b997cce3cffa74609bAdam Lesinski chooseHtv = ArrayUtils.newUnpaddedIntArray(chooseHt.length); 6019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 603121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio for (int i = 0; i < chooseHt.length; i++) { 604121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio int o = spanned.getSpanStart(chooseHt[i]); 6059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 606e8e45f2c05cb3b6d23f30c8f96d8e0b3699cea7aDoug Felt if (o < paraStart) { 6079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // starts in this layout, before the 6089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // current paragraph 6099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 610121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio chooseHtv[i] = getLineTop(getLineForOffset(o)); 6119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 6129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // starts in this paragraph 6139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 614121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio chooseHtv[i] = v; 6159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 62070616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien measured.setPara(source, paraStart, paraEnd, textDir, b); 621e8e45f2c05cb3b6d23f30c8f96d8e0b3699cea7aDoug Felt char[] chs = measured.mChars; 622e8e45f2c05cb3b6d23f30c8f96d8e0b3699cea7aDoug Felt float[] widths = measured.mWidths; 623e8e45f2c05cb3b6d23f30c8f96d8e0b3699cea7aDoug Felt byte[] chdirs = measured.mLevels; 624e8e45f2c05cb3b6d23f30c8f96d8e0b3699cea7aDoug Felt int dir = measured.mDir; 625e8e45f2c05cb3b6d23f30c8f96d8e0b3699cea7aDoug Felt boolean easy = measured.mEasy; 626c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien 627c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien // tab stop locations 628c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien int[] variableTabStops = null; 629c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien if (spanned != null) { 630c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien TabStopSpan[] spans = getParagraphSpans(spanned, paraStart, 631c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien paraEnd, TabStopSpan.class); 632c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien if (spans.length > 0) { 633c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien int[] stops = new int[spans.length]; 634c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien for (int i = 0; i < spans.length; i++) { 635c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien stops[i] = spans[i].getTabStop(); 636c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien } 637c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien Arrays.sort(stops, 0, stops.length); 638c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien variableTabStops = stops; 639c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien } 640c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien } 641c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien 642c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien nSetupParagraph(b.mNativePtr, chs, paraEnd - paraStart, 643c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien firstWidth, firstWidthLineCount, restWidth, 64439b4db73c3340ff955f67e4e5318159d19d1ab3aRaph Levien variableTabStops, TAB_INCREMENT, b.mBreakStrategy); 6459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 646c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye // measurement has to be done before performing line breaking 647c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye // but we don't want to recompute fontmetrics or span ranges the 648c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye // second time, so we cache those and then use those stored values 649c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye int fmCacheCount = 0; 650c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye int spanEndCacheCount = 0; 651cd943a7a013952af9b7286fd506fd63bf0993ac1Gilles Debunne for (int spanStart = paraStart, spanEnd; spanStart < paraEnd; spanStart = spanEnd) { 652c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye if (fmCacheCount * 4 >= fmCache.length) { 653c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye int[] grow = new int[fmCacheCount * 4 * 2]; 654c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye System.arraycopy(fmCache, 0, grow, 0, fmCacheCount * 4); 655c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye fmCache = grow; 656c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye } 657c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye 658c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye if (spanEndCacheCount >= spanEndCache.length) { 659c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye int[] grow = new int[spanEndCacheCount * 2]; 660c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye System.arraycopy(spanEndCache, 0, grow, 0, spanEndCacheCount); 661c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye spanEndCache = grow; 662c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye } 66323241887515ed77687c23e29a4a3ffff671666bdDoug Felt 664cd943a7a013952af9b7286fd506fd63bf0993ac1Gilles Debunne if (spanned == null) { 665cd943a7a013952af9b7286fd506fd63bf0993ac1Gilles Debunne spanEnd = paraEnd; 66623241887515ed77687c23e29a4a3ffff671666bdDoug Felt int spanLen = spanEnd - spanStart; 667cd943a7a013952af9b7286fd506fd63bf0993ac1Gilles Debunne measured.addStyleRun(paint, spanLen, fm); 668cd943a7a013952af9b7286fd506fd63bf0993ac1Gilles Debunne } else { 669cd943a7a013952af9b7286fd506fd63bf0993ac1Gilles Debunne spanEnd = spanned.nextSpanTransition(spanStart, paraEnd, 670cd943a7a013952af9b7286fd506fd63bf0993ac1Gilles Debunne MetricAffectingSpan.class); 671cd943a7a013952af9b7286fd506fd63bf0993ac1Gilles Debunne int spanLen = spanEnd - spanStart; 672cd943a7a013952af9b7286fd506fd63bf0993ac1Gilles Debunne MetricAffectingSpan[] spans = 67323241887515ed77687c23e29a4a3ffff671666bdDoug Felt spanned.getSpans(spanStart, spanEnd, MetricAffectingSpan.class); 674cd943a7a013952af9b7286fd506fd63bf0993ac1Gilles Debunne spans = TextUtils.removeEmptySpans(spans, spanned, MetricAffectingSpan.class); 675cd943a7a013952af9b7286fd506fd63bf0993ac1Gilles Debunne measured.addStyleRun(paint, spans, spanLen, fm); 67623241887515ed77687c23e29a4a3ffff671666bdDoug Felt } 67723241887515ed77687c23e29a4a3ffff671666bdDoug Felt 678c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye // the order of storage here (top, bottom, ascent, descent) has to match the code below 679c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye // where these values are retrieved 680c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye fmCache[fmCacheCount * 4 + 0] = fm.top; 681c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye fmCache[fmCacheCount * 4 + 1] = fm.bottom; 682c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye fmCache[fmCacheCount * 4 + 2] = fm.ascent; 683c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye fmCache[fmCacheCount * 4 + 3] = fm.descent; 684c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye fmCacheCount++; 685c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye 686c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye spanEndCache[spanEndCacheCount] = spanEnd; 687c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye spanEndCacheCount++; 688c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye } 689c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye 69070616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien nGetWidths(b.mNativePtr, widths); 691c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien int breakCount = nComputeLineBreaks(b.mNativePtr, lineBreaks, lineBreaks.breaks, 692c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien lineBreaks.widths, lineBreaks.flags, lineBreaks.breaks.length); 69381541491946bfc4f2e26c171b4ebff4249dca51cGilles Debunne 694c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye int[] breaks = lineBreaks.breaks; 695c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye float[] lineWidths = lineBreaks.widths; 69626d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien int[] flags = lineBreaks.flags; 6979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 698c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye // here is the offset of the starting character of the line we are currently measuring 699c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye int here = paraStart; 700d300e75eff0d5e54390400cbd3f80dc4cea8b617Gilles Debunne 701c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye int fmTop = 0, fmBottom = 0, fmAscent = 0, fmDescent = 0; 702c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye int fmCacheIndex = 0; 703c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye int spanEndCacheIndex = 0; 704c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye int breakIndex = 0; 705c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye for (int spanStart = paraStart, spanEnd; spanStart < paraEnd; spanStart = spanEnd) { 706c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye // retrieve end of span 707c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye spanEnd = spanEndCache[spanEndCacheIndex++]; 708c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye 709c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye // retrieve cached metrics, order matches above 710c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye fm.top = fmCache[fmCacheIndex * 4 + 0]; 711c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye fm.bottom = fmCache[fmCacheIndex * 4 + 1]; 712c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye fm.ascent = fmCache[fmCacheIndex * 4 + 2]; 713c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye fm.descent = fmCache[fmCacheIndex * 4 + 3]; 714c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye fmCacheIndex++; 715c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye 716c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye if (fm.top < fmTop) { 717c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye fmTop = fm.top; 718c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye } 719c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye if (fm.ascent < fmAscent) { 720c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye fmAscent = fm.ascent; 721c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye } 722c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye if (fm.descent > fmDescent) { 723c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye fmDescent = fm.descent; 724c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye } 725c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye if (fm.bottom > fmBottom) { 726c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye fmBottom = fm.bottom; 727c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye } 728cd943a7a013952af9b7286fd506fd63bf0993ac1Gilles Debunne 729c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye // skip breaks ending before current span range 730c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye while (breakIndex < breakCount && paraStart + breaks[breakIndex] < spanStart) { 731c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye breakIndex++; 732c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye } 73381541491946bfc4f2e26c171b4ebff4249dca51cGilles Debunne 734c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye while (breakIndex < breakCount && paraStart + breaks[breakIndex] <= spanEnd) { 735c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye int endPos = paraStart + breaks[breakIndex]; 736c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye 737ce4155a204144ae5462f547f7738af24be5a1f77Raph Levien boolean moreChars = (endPos < bufEnd); 7384c02e831728daf9374b52e2fe3fdbf7ce982bfc4Raph Levien 739c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye v = out(source, here, endPos, 740c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye fmAscent, fmDescent, fmTop, fmBottom, 741c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye v, spacingmult, spacingadd, chooseHt,chooseHtv, fm, flags[breakIndex], 742c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye needMultiply, chdirs, dir, easy, bufEnd, includepad, trackpad, 743c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye chs, widths, paraStart, ellipsize, ellipsizedWidth, 7444c02e831728daf9374b52e2fe3fdbf7ce982bfc4Raph Levien lineWidths[breakIndex], paint, moreChars); 745c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye 746c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye if (endPos < spanEnd) { 747c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye // preserve metrics for current span 748c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye fmTop = fm.top; 749c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye fmBottom = fm.bottom; 750c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye fmAscent = fm.ascent; 751c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye fmDescent = fm.descent; 752c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye } else { 753c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye fmTop = fmBottom = fmAscent = fmDescent = 0; 7548059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio } 7559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 756c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye here = endPos; 757c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye breakIndex++; 7589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 759c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye if (mLineCount >= mMaximumVisibleLineCount) { 760c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye return; 761c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye } 7629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 765121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio if (paraEnd == bufEnd) 7669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 7679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7698059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio if ((bufEnd == bufStart || source.charAt(bufEnd - 1) == CHAR_NEW_LINE) && 770ad0b051b133baf92f199c96a8ac1e81b3393190cFabrice Di Meglio mLineCount < mMaximumVisibleLineCount) { 771121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio // Log.e("text", "output last " + bufEnd); 7729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 77370616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien measured.setPara(source, bufEnd, bufEnd, textDir, b); 774e631889e1ae7edc6a2fae495ba504f85820b6a4bFabrice Di Meglio 7759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project paint.getFontMetricsInt(fm); 7769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project v = out(source, 778121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio bufEnd, bufEnd, fm.ascent, fm.descent, 7799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fm.top, fm.bottom, 7809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project v, 7819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project spacingmult, spacingadd, null, 78226d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien null, fm, 0, 783e631889e1ae7edc6a2fae495ba504f85820b6a4bFabrice Di Meglio needMultiply, measured.mLevels, measured.mDir, measured.mEasy, bufEnd, 784d300e75eff0d5e54390400cbd3f80dc4cea8b617Gilles Debunne includepad, trackpad, null, 785d300e75eff0d5e54390400cbd3f80dc4cea8b617Gilles Debunne null, bufStart, ellipsize, 786d300e75eff0d5e54390400cbd3f80dc4cea8b617Gilles Debunne ellipsizedWidth, 0, paint, false); 7879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int out(CharSequence text, int start, int end, 7919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int above, int below, int top, int bottom, int v, 7929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float spacingmult, float spacingadd, 793121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio LineHeightSpan[] chooseHt, int[] chooseHtv, 79426d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien Paint.FontMetricsInt fm, int flags, 795d300e75eff0d5e54390400cbd3f80dc4cea8b617Gilles Debunne boolean needMultiply, byte[] chdirs, int dir, 796d300e75eff0d5e54390400cbd3f80dc4cea8b617Gilles Debunne boolean easy, int bufEnd, boolean includePad, 797d300e75eff0d5e54390400cbd3f80dc4cea8b617Gilles Debunne boolean trackPad, char[] chs, 798d300e75eff0d5e54390400cbd3f80dc4cea8b617Gilles Debunne float[] widths, int widthStart, TextUtils.TruncateAt ellipsize, 799d300e75eff0d5e54390400cbd3f80dc4cea8b617Gilles Debunne float ellipsisWidth, float textWidth, 800d300e75eff0d5e54390400cbd3f80dc4cea8b617Gilles Debunne TextPaint paint, boolean moreChars) { 8019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int j = mLineCount; 8029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int off = j * mColumns; 8039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int want = off + mColumns + TOP; 8049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int[] lines = mLines; 8059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (want >= lines.length) { 807776abc24cdd18610232a50b997cce3cffa74609bAdam Lesinski Directions[] grow2 = ArrayUtils.newUnpaddedArray( 808776abc24cdd18610232a50b997cce3cffa74609bAdam Lesinski Directions.class, GrowingArrayUtils.growSize(want)); 8099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project System.arraycopy(mLineDirections, 0, grow2, 0, 8109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLineDirections.length); 8119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLineDirections = grow2; 812776abc24cdd18610232a50b997cce3cffa74609bAdam Lesinski 813776abc24cdd18610232a50b997cce3cffa74609bAdam Lesinski int[] grow = new int[grow2.length]; 814776abc24cdd18610232a50b997cce3cffa74609bAdam Lesinski System.arraycopy(lines, 0, grow, 0, lines.length); 815776abc24cdd18610232a50b997cce3cffa74609bAdam Lesinski mLines = grow; 816776abc24cdd18610232a50b997cce3cffa74609bAdam Lesinski lines = grow; 8179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 819121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio if (chooseHt != null) { 8209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fm.ascent = above; 8219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fm.descent = below; 8229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fm.top = top; 8239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fm.bottom = bottom; 8249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 825121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio for (int i = 0; i < chooseHt.length; i++) { 826121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio if (chooseHt[i] instanceof LineHeightSpan.WithDensity) { 827121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio ((LineHeightSpan.WithDensity) chooseHt[i]). 828121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio chooseHeight(text, start, end, chooseHtv[i], v, fm, paint); 829a9f1dd021f8f6ee777bc4d27913bd40c42e753afEric Fischer 830a9f1dd021f8f6ee777bc4d27913bd40c42e753afEric Fischer } else { 831121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio chooseHt[i].chooseHeight(text, start, end, chooseHtv[i], v, fm); 832a9f1dd021f8f6ee777bc4d27913bd40c42e753afEric Fischer } 8339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project above = fm.ascent; 8369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project below = fm.descent; 8379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project top = fm.top; 8389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project bottom = fm.bottom; 8399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 841d97b097a5b7a906e8d30c6d3b0f41c55650ce7a9Raph Levien boolean firstLine = (j == 0); 842d97b097a5b7a906e8d30c6d3b0f41c55650ce7a9Raph Levien boolean currentLineIsTheLastVisibleOne = (j + 1 == mMaximumVisibleLineCount); 843d97b097a5b7a906e8d30c6d3b0f41c55650ce7a9Raph Levien boolean lastLine = currentLineIsTheLastVisibleOne || (end == bufEnd); 844d97b097a5b7a906e8d30c6d3b0f41c55650ce7a9Raph Levien 845d97b097a5b7a906e8d30c6d3b0f41c55650ce7a9Raph Levien if (firstLine) { 846121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio if (trackPad) { 8479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTopPadding = top - above; 8489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 850121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio if (includePad) { 8519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project above = top; 8529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 854d97b097a5b7a906e8d30c6d3b0f41c55650ce7a9Raph Levien 855d97b097a5b7a906e8d30c6d3b0f41c55650ce7a9Raph Levien int extra; 856d97b097a5b7a906e8d30c6d3b0f41c55650ce7a9Raph Levien 857d97b097a5b7a906e8d30c6d3b0f41c55650ce7a9Raph Levien if (lastLine) { 858121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio if (trackPad) { 8599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBottomPadding = bottom - below; 8609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 862121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio if (includePad) { 8639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project below = bottom; 8649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 868d97b097a5b7a906e8d30c6d3b0f41c55650ce7a9Raph Levien if (needMultiply && !lastLine) { 8691065758a0f8966a8597a61492112f7859a7050a4Doug Felt double ex = (below - above) * (spacingmult - 1) + spacingadd; 8701065758a0f8966a8597a61492112f7859a7050a4Doug Felt if (ex >= 0) { 871121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio extra = (int)(ex + EXTRA_ROUNDING); 8721065758a0f8966a8597a61492112f7859a7050a4Doug Felt } else { 873121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio extra = -(int)(-ex + EXTRA_ROUNDING); 8741065758a0f8966a8597a61492112f7859a7050a4Doug Felt } 8759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 8769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project extra = 0; 8779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lines[off + START] = start; 8809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lines[off + TOP] = v; 8819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lines[off + DESCENT] = below + extra; 8829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project v += (below - above) + extra; 8849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lines[off + mColumns + START] = end; 8859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lines[off + mColumns + TOP] = v; 8869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 88726d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien // TODO: could move TAB to share same column as HYPHEN, simplifying this code and gaining 88826d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien // one bit for start field 88926d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien lines[off + TAB] |= flags & TAB_MASK; 89026d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien lines[off + HYPHEN] = flags; 8919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8929f7a4442b89cc06cb8cae6992484e7ae795323abDoug Felt lines[off + DIR] |= dir << DIR_SHIFT; 8939f7a4442b89cc06cb8cae6992484e7ae795323abDoug Felt Directions linedirs = DIRS_ALL_LEFT_TO_RIGHT; 8949f7a4442b89cc06cb8cae6992484e7ae795323abDoug Felt // easy means all chars < the first RTL, so no emoji, no nothing 8954e0c5e55e171532760d5f51e0165563827129d4eDoug Felt // XXX a run with no text or all spaces is easy but might be an empty 8969f7a4442b89cc06cb8cae6992484e7ae795323abDoug Felt // RTL paragraph. Make sure easy is false if this is the case. 8979f7a4442b89cc06cb8cae6992484e7ae795323abDoug Felt if (easy) { 8989f7a4442b89cc06cb8cae6992484e7ae795323abDoug Felt mLineDirections[j] = linedirs; 8999f7a4442b89cc06cb8cae6992484e7ae795323abDoug Felt } else { 900f3fa0cdbaea109b114f7facbb5d42de3fc12bbc8Gilles Debunne mLineDirections[j] = AndroidBidi.directions(dir, chdirs, start - widthStart, chs, 901f3fa0cdbaea109b114f7facbb5d42de3fc12bbc8Gilles Debunne start - widthStart, end - start); 9020a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne } 9039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 904aef455fd5b4c667267deb050bc7997e737b7507eFabrice Di Meglio if (ellipsize != null) { 905aef455fd5b4c667267deb050bc7997e737b7507eFabrice Di Meglio // If there is only one line, then do any type of ellipsis except when it is MARQUEE 906aef455fd5b4c667267deb050bc7997e737b7507eFabrice Di Meglio // if there are multiple lines, just allow END ellipsis on the last line 9078059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio boolean forceEllipsis = moreChars && (mLineCount + 1 == mMaximumVisibleLineCount); 908aef455fd5b4c667267deb050bc7997e737b7507eFabrice Di Meglio 90934a126e51aaf22e32c7af808ec6b5a0c41ae3311Fabrice Di Meglio boolean doEllipsis = 91034a126e51aaf22e32c7af808ec6b5a0c41ae3311Fabrice Di Meglio (((mMaximumVisibleLineCount == 1 && moreChars) || (firstLine && !moreChars)) && 911aef455fd5b4c667267deb050bc7997e737b7507eFabrice Di Meglio ellipsize != TextUtils.TruncateAt.MARQUEE) || 912aef455fd5b4c667267deb050bc7997e737b7507eFabrice Di Meglio (!firstLine && (currentLineIsTheLastVisibleOne || !moreChars) && 913aef455fd5b4c667267deb050bc7997e737b7507eFabrice Di Meglio ellipsize == TextUtils.TruncateAt.END); 914aef455fd5b4c667267deb050bc7997e737b7507eFabrice Di Meglio if (doEllipsis) { 915aef455fd5b4c667267deb050bc7997e737b7507eFabrice Di Meglio calculateEllipsis(start, end, widths, widthStart, 916aef455fd5b4c667267deb050bc7997e737b7507eFabrice Di Meglio ellipsisWidth, ellipsize, j, 917aef455fd5b4c667267deb050bc7997e737b7507eFabrice Di Meglio textWidth, paint, forceEllipsis); 918aef455fd5b4c667267deb050bc7997e737b7507eFabrice Di Meglio } 9199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLineCount++; 9229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return v; 9239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 925121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio private void calculateEllipsis(int lineStart, int lineEnd, 926121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio float[] widths, int widthStart, 9279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float avail, TextUtils.TruncateAt where, 9288059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio int line, float textWidth, TextPaint paint, 9298059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio boolean forceEllipsis) { 9308059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio if (textWidth <= avail && !forceEllipsis) { 9319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Everything fits! 9329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLines[mColumns * line + ELLIPSIS_START] = 0; 9339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLines[mColumns * line + ELLIPSIS_COUNT] = 0; 9349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 9359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 937cb332649e44db86ff8b4e7f006db4bbfd82fed55Fabrice Di Meglio float ellipsisWidth = paint.measureText( 9388d44fff7e62f77c3b3072a96712cc1389e63ca64Fabrice Di Meglio (where == TextUtils.TruncateAt.END_SMALL) ? 939d29bdb266d54b4551f42776bb790e80147a279d0Neil Fuller TextUtils.ELLIPSIS_TWO_DOTS : TextUtils.ELLIPSIS_NORMAL, 0, 1); 9408059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio int ellipsisStart = 0; 9418059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio int ellipsisCount = 0; 942121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio int len = lineEnd - lineStart; 9439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9448059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio // We only support start ellipsis on a single line 9459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (where == TextUtils.TruncateAt.START) { 9468059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio if (mMaximumVisibleLineCount == 1) { 9478059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio float sum = 0; 9488059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio int i; 9499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 950ed2eea1bfc1fb57d3b34f2c1e6062b541737e73eKeisuke Kuroyanagi for (i = len; i > 0; i--) { 9518059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio float w = widths[i - 1 + lineStart - widthStart]; 9529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9538059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio if (w + sum + ellipsisWidth > avail) { 9548059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio break; 9558059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio } 9568059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio 9578059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio sum += w; 9589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9608059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio ellipsisStart = 0; 9618059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio ellipsisCount = i; 9628059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio } else { 9638059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio if (Log.isLoggable(TAG, Log.WARN)) { 9648059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio Log.w(TAG, "Start Ellipsis only supported with one line"); 9658059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio } 9669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 967cb332649e44db86ff8b4e7f006db4bbfd82fed55Fabrice Di Meglio } else if (where == TextUtils.TruncateAt.END || where == TextUtils.TruncateAt.MARQUEE || 968cb332649e44db86ff8b4e7f006db4bbfd82fed55Fabrice Di Meglio where == TextUtils.TruncateAt.END_SMALL) { 9699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float sum = 0; 9709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int i; 9719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (i = 0; i < len; i++) { 973121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio float w = widths[i + lineStart - widthStart]; 9749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 975121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio if (w + sum + ellipsisWidth > avail) { 9769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 9779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sum += w; 9809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ellipsisStart = i; 9839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ellipsisCount = len - i; 984aef455fd5b4c667267deb050bc7997e737b7507eFabrice Di Meglio if (forceEllipsis && ellipsisCount == 0 && len > 0) { 985aef455fd5b4c667267deb050bc7997e737b7507eFabrice Di Meglio ellipsisStart = len - 1; 9868059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio ellipsisCount = 1; 9878059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio } 9888059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio } else { 9898059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio // where = TextUtils.TruncateAt.MIDDLE We only support middle ellipsis on a single line 9908059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio if (mMaximumVisibleLineCount == 1) { 9918059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio float lsum = 0, rsum = 0; 9928059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio int left = 0, right = len; 9939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9948059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio float ravail = (avail - ellipsisWidth) / 2; 9950e3c5e827235911d33312e431975533f046421e7Raph Levien for (right = len; right > 0; right--) { 9968059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio float w = widths[right - 1 + lineStart - widthStart]; 9979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9988059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio if (w + rsum > ravail) { 9998059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio break; 10008059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio } 10018059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio 10028059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio rsum += w; 10039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10058059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio float lavail = avail - ellipsisWidth - rsum; 10068059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio for (left = 0; left < right; left++) { 10078059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio float w = widths[left + lineStart - widthStart]; 10089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10098059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio if (w + lsum > lavail) { 10108059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio break; 10118059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio } 10129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10138059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio lsum += w; 10149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10168059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio ellipsisStart = left; 10178059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio ellipsisCount = right - left; 10188059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio } else { 10198059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio if (Log.isLoggable(TAG, Log.WARN)) { 10208059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio Log.w(TAG, "Middle Ellipsis only supported with one line"); 10218059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio } 10229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLines[mColumns * line + ELLIPSIS_START] = ellipsisStart; 10269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLines[mColumns * line + ELLIPSIS_COUNT] = ellipsisCount; 10279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1029e8e45f2c05cb3b6d23f30c8f96d8e0b3699cea7aDoug Felt // Override the base class so we can directly access our members, 10309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // rather than relying on member functions. 10319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // The logic mirrors that of Layout.getLineForVertical 10329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // FIXME: It may be faster to do a linear search for layouts without many lines. 10336611147383118cd91cc29b31bff9aaf4c853f39dGilles Debunne @Override 10349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getLineForVertical(int vertical) { 10359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int high = mLineCount; 10369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int low = -1; 10379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int guess; 10389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int[] lines = mLines; 10399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project while (high - low > 1) { 10409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project guess = (high + low) >> 1; 10419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (lines[mColumns * guess + TOP] > vertical){ 10429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project high = guess; 10439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 10449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project low = guess; 10459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (low < 0) { 10489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 10499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 10509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return low; 10519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10546611147383118cd91cc29b31bff9aaf4c853f39dGilles Debunne @Override 10559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getLineCount() { 10569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mLineCount; 10579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10596611147383118cd91cc29b31bff9aaf4c853f39dGilles Debunne @Override 10609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getLineTop(int line) { 10610a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne int top = mLines[mColumns * line + TOP]; 10620a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne if (mMaximumVisibleLineCount > 0 && line >= mMaximumVisibleLineCount && 10630a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne line != mLineCount) { 10640a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne top += getBottomPadding(); 10650a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne } 10660a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne return top; 10679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10696611147383118cd91cc29b31bff9aaf4c853f39dGilles Debunne @Override 10709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getLineDescent(int line) { 10710a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne int descent = mLines[mColumns * line + DESCENT]; 1072f3fa0cdbaea109b114f7facbb5d42de3fc12bbc8Gilles Debunne if (mMaximumVisibleLineCount > 0 && line >= mMaximumVisibleLineCount - 1 && // -1 intended 10730a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne line != mLineCount) { 10740a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne descent += getBottomPadding(); 10750a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne } 10760a4db3c5270440eeb7e4e44a7029926e239ec3bdGilles Debunne return descent; 10779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10796611147383118cd91cc29b31bff9aaf4c853f39dGilles Debunne @Override 10809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getLineStart(int line) { 10819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mLines[mColumns * line + START] & START_MASK; 10829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10846611147383118cd91cc29b31bff9aaf4c853f39dGilles Debunne @Override 10859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getParagraphDirection(int line) { 10869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mLines[mColumns * line + DIR] >> DIR_SHIFT; 10879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10896611147383118cd91cc29b31bff9aaf4c853f39dGilles Debunne @Override 10909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean getLineContainsTab(int line) { 10919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (mLines[mColumns * line + TAB] & TAB_MASK) != 0; 10929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10946611147383118cd91cc29b31bff9aaf4c853f39dGilles Debunne @Override 10959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public final Directions getLineDirections(int line) { 10969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mLineDirections[line]; 10979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10996611147383118cd91cc29b31bff9aaf4c853f39dGilles Debunne @Override 11009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getTopPadding() { 11019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mTopPadding; 11029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11046611147383118cd91cc29b31bff9aaf4c853f39dGilles Debunne @Override 11059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getBottomPadding() { 11069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mBottomPadding; 11079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 110926d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien /** 111026d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien * @hide 111126d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien */ 111226d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien @Override 111326d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien public int getHyphen(int line) { 111426d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien return mLines[mColumns * line + HYPHEN] & 0xff; 111526d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien } 111626d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien 11179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 11189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getEllipsisCount(int line) { 11199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mColumns < COLUMNS_ELLIPSIZE) { 11209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 11219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mLines[mColumns * line + ELLIPSIS_COUNT]; 11249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 11279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getEllipsisStart(int line) { 11289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mColumns < COLUMNS_ELLIPSIZE) { 11299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 11309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mLines[mColumns * line + ELLIPSIS_START]; 11339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 11369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getEllipsizedWidth() { 11379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mEllipsizedWidth; 11389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 114070616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien private static native long nNewBuilder(); 114170616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien private static native void nFreeBuilder(long nativePtr); 114270616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien private static native void nFinishBuilder(long nativePtr); 114326d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien 114426d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien /* package */ static native long nLoadHyphenator(String patternData); 114526d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien 114626d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien private static native void nSetLocale(long nativePtr, String locale, long nativeHyphenator); 114770616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien 1148e319d5a3627aa3cd73c6ec0c76f8593ddefbab9dRaph Levien private static native void nSetIndents(long nativePtr, int[] indents); 1149e319d5a3627aa3cd73c6ec0c76f8593ddefbab9dRaph Levien 1150c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien // Set up paragraph text and settings; done as one big method to minimize jni crossings 1151c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien private static native void nSetupParagraph(long nativePtr, char[] text, int length, 1152c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien float firstWidth, int firstWidthLineCount, float restWidth, 1153c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien int[] variableTabStops, int defaultTabStop, int breakStrategy); 115470616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien 115570616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien private static native float nAddStyleRun(long nativePtr, long nativePaint, 115670616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien long nativeTypeface, int start, int end, boolean isRtl); 115770616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien 115870616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien private static native void nAddMeasuredRun(long nativePtr, 115970616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien int start, int end, float[] widths); 116070616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien 116170616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien private static native void nAddReplacementRun(long nativePtr, int start, int end, float width); 116270616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien 116370616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien private static native void nGetWidths(long nativePtr, float[] widths); 116470616ecd22fafccf2fab7565ccfbb3b5f91c5580Raph Levien 1165c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye // populates LineBreaks and returns the number of breaks found 1166c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye // 1167c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye // the arrays inside the LineBreaks objects are passed in as well 1168c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye // to reduce the number of JNI calls in the common case where the 1169c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye // arrays do not have to be resized 1170c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien private static native int nComputeLineBreaks(long nativePtr, LineBreaks recycle, 117126d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien int[] recycleBreaks, float[] recycleWidths, int[] recycleFlags, int recycleLength); 117288b5b0be887fc5dc3b0b879b4179dde200d2e4d6Anish Athalye 11739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mLineCount; 11749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mTopPadding, mBottomPadding; 11759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mColumns; 11769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mEllipsizedWidth; 11779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 117826d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien private static final int COLUMNS_NORMAL = 4; 117926d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien private static final int COLUMNS_ELLIPSIZE = 6; 11809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int START = 0; 11819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int DIR = START; 11829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int TAB = START; 11839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int TOP = 1; 11849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int DESCENT = 2; 118526d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien private static final int HYPHEN = 3; 118626d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien private static final int ELLIPSIS_START = 4; 118726d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien private static final int ELLIPSIS_COUNT = 5; 11889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int[] mLines; 11909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private Directions[] mLineDirections; 11918059e0903e36cbb5cf8b5c5d5d653acc9bbc8402Fabrice Di Meglio private int mMaximumVisibleLineCount = Integer.MAX_VALUE; 11929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int START_MASK = 0x1FFFFFFF; 11949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int DIR_SHIFT = 30; 11959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int TAB_MASK = 0x20000000; 11969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1197c982f60e982c1d2df9f115ed9a5c3ef3643d0892Doug Felt private static final int TAB_INCREMENT = 20; // same as Layout, but that's private 11989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1199121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio private static final char CHAR_NEW_LINE = '\n'; 1200121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio 1201121c82c8130c2658f73fb19f3a62eb88c8679968Fabrice Di Meglio private static final double EXTRA_ROUNDING = 0.5; 1202cb332649e44db86ff8b4e7f006db4bbfd82fed55Fabrice Di Meglio 1203c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye // This is used to return three arrays from a single JNI call when 1204c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye // performing line breaking 12057053919a3a55ad1b58e6db701afda18850037732Deepanshu Gupta /*package*/ static class LineBreaks { 1206c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye private static final int INITIAL_SIZE = 16; 1207c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye public int[] breaks = new int[INITIAL_SIZE]; 1208c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye public float[] widths = new float[INITIAL_SIZE]; 120926d443aee4ee5a8791417b4ca09e8c78ba8dc78bRaph Levien public int[] flags = new int[INITIAL_SIZE]; // hasTabOrEmoji 1210c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye // breaks, widths, and flags should all have the same length 1211c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye } 1212c8f9e6218681640d5f384c12edf06619be56a583Anish Athalye 12139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 1214