TranslatedCoordinatesProvider.java
/*
* 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;
}
}