content: /*
   * Copyright (C) 2018 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package android.graphics.text;
  
  import android.annotation.NonNull;
  
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  
  // Based on the native implementation of LineBreaker in
  // frameworks/base/core/jni/android_text_StaticLayout.cpp revision b808260
  public abstract class BaseLineBreaker {
  
      protected static final int TAB_MASK   = 0x20000000;  // keep in sync with StaticLayout
  
      protected final @NonNull List<Primitive> mPrimitives;
      protected final @NonNull
      LineWidth mLineWidth;
      protected final @NonNull
      TabStops mTabStops;
  
      public BaseLineBreaker(@NonNull List<Primitive> primitives, @NonNull LineWidth lineWidth,
              @NonNull TabStops tabStops) {
          mPrimitives = Collections.unmodifiableList(primitives);
          mLineWidth = lineWidth;
          mTabStops = tabStops;
      }
  
      public abstract Result computeBreaks();
  
      public static class Result {
          List<Integer> mLineBreakOffset = new ArrayList<>();
          List<Float> mLineWidths = new ArrayList<>();
          List<Float> mLineAscents = new ArrayList<>();
          List<Float> mLineDescents = new ArrayList<>();
          List<Integer> mLineFlags = new ArrayList<>();
      }
  }
  