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 androidx.constraintlayout.motion.widget;
  
  import android.graphics.RectF;
  import android.view.View;
  
  import java.util.HashSet;
  
  /**
   * Defines a KeyPositionBase abstract base class KeyPositionBase elements provide
   *
   */
  
  abstract class KeyPositionBase extends Key {
      protected static final float SELECTION_SLOPE = 20;
      int mCurveFit = UNSET;
  
      /**
       * Get the position of the view
       *
       *
       * @param layoutWidth
       * @param layoutHeight
       * @param startX
       * @param startY
       * @param endX
       * @param endY
       *
       */
      abstract void calcPosition(int layoutWidth,
                                 int layoutHeight,
                                 float startX,
                                 float startY,
                                 float endX,
                                 float endY);
  
      /**
       * @return
       *
       */
      abstract float getPositionX();
  
      /**
       * @return
       *
       */
      abstract float getPositionY();
  
      @Override
      void getAttributeNames(HashSet<String> attributes) {
      }
  
      /**
       *
       * @param view
       * @param start
       * @param end
       * @param x
       * @param y
       * @param attribute
       * @param value
       *
       */
      abstract void positionAttributes(View view,
                                       RectF start,
                                       RectF end,
                                       float x,
                                       float y,
                                       String[] attribute,
                                       float[] value);
  
      /**
       *
       * @param layoutWidth
       * @param layoutHeight
       * @param start
       * @param end
       * @param x
       * @param y
       * @return
       *
       */
      public abstract boolean intersects(int layoutWidth,
                                         int layoutHeight,
                                         RectF start,
                                         RectF end,
                                         float x,
                                         float y);
  }
  