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      1 /*
      2  * Copyright (C) 2012 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package android.text.style;
     18 
     19 import android.graphics.Paint;
     20 import android.os.Parcel;
     21 import android.text.ParcelableSpan;
     22 import android.text.TextPaint;
     23 import android.text.TextUtils;
     24 import java.util.Locale;
     25 
     26 /**
     27  * Changes the {@link Locale} of the text to which the span is attached.
     28  */
     29 public class LocaleSpan extends MetricAffectingSpan implements ParcelableSpan {
     30     private final Locale mLocale;
     31 
     32     /**
     33      * Creates a LocaleSpan.
     34      * @param locale The {@link Locale} of the text to which the span is
     35      * attached.
     36      */
     37     public LocaleSpan(Locale locale) {
     38         mLocale = locale;
     39     }
     40 
     41     public LocaleSpan(Parcel src) {
     42         mLocale = new Locale(src.readString(), src.readString(), src.readString());
     43     }
     44 
     45     @Override
     46     public int getSpanTypeId() {
     47         return TextUtils.LOCALE_SPAN;
     48     }
     49 
     50     @Override
     51     public int describeContents() {
     52         return 0;
     53     }
     54 
     55     @Override
     56     public void writeToParcel(Parcel dest, int flags) {
     57         dest.writeString(mLocale.getLanguage());
     58         dest.writeString(mLocale.getCountry());
     59         dest.writeString(mLocale.getVariant());
     60     }
     61 
     62     /**
     63      * Returns the {@link Locale}.
     64      *
     65      * @return The {@link Locale} for this span.
     66      */
     67     public Locale getLocale() {
     68         return mLocale;
     69     }
     70 
     71     @Override
     72     public void updateDrawState(TextPaint ds) {
     73         apply(ds, mLocale);
     74     }
     75 
     76     @Override
     77     public void updateMeasureState(TextPaint paint) {
     78         apply(paint, mLocale);
     79     }
     80 
     81     private static void apply(Paint paint, Locale locale) {
     82         paint.setTextLocale(locale);
     83     }
     84 }
     85