content: /*
   * Copyright (C) 2017 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.test.espresso.action;
  
  import android.view.View;
  
  /**
   * Translates a {@link GeneralLocation} by the given x and y distances. The distances are given in
   * term of the view's size. 1.0 means to translate by an amount equivalent to the view's length.
   *
   * <p>This class is a wrapper around {@link GeneralLocation#translate(CoordinatesProvider, float,
   * float)}, which enables serialization and deserialization of custom {@link CoordinatesProvider}s.
   */
  final class TranslatedCoordinatesProvider implements CoordinatesProvider {
  
    final CoordinatesProvider coordinatesProvider;
    final float dx;
    final float dy;
  
    /**
     * Creates an instance of {@link TranslatedCoordinatesProvider}
     *
     * @param coordinatesProvider the {@link GeneralLocation} to translate
     * @param dx the distance in x direction
     * @param dy the distance in y direction
     */
    public TranslatedCoordinatesProvider(
        CoordinatesProvider coordinatesProvider, float dx, float dy) {
      this.coordinatesProvider = coordinatesProvider;
      this.dx = dx;
      this.dy = dy;
    }
  
    /** {@inheritDoc} */
    @Override
    public float[] calculateCoordinates(View view) {
      float[] xy = coordinatesProvider.calculateCoordinates(view);
      xy[0] += dx * view.getWidth();
      xy[1] += dy * view.getHeight();
      return xy;
    }
  }
  