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/*
* Copyright (C) 2020 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.util;
import static android.view.Surface.ROTATION_0;
import static android.view.Surface.ROTATION_180;
import static android.view.Surface.ROTATION_270;
import static android.view.Surface.ROTATION_90;
import android.graphics.Insets;
import android.view.Surface.Rotation;
/**
* A class containing utility methods related to rotation.
*
* @hide
*/
public class RotationUtils {
/**
* Rotates an Insets according to the given rotation.
*/
public static Insets rotateInsets(Insets insets, @Rotation int rotation) {
if (insets == null || insets == Insets.NONE) {
return insets;
}
Insets rotated;
switch (rotation) {
case ROTATION_0:
rotated = insets;
break;
case ROTATION_90:
rotated = Insets.of(
insets.top,
insets.right,
insets.bottom,
insets.left);
break;
case ROTATION_180:
rotated = Insets.of(
insets.right,
insets.bottom,
insets.left,
insets.top);
break;
case ROTATION_270:
rotated = Insets.of(
insets.bottom,
insets.left,
insets.top,
insets.right);
break;
default:
throw new IllegalArgumentException("unknown rotation: " + rotation);
}
return rotated;
}
}
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