| /* |
| * 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; |
| } |
| } |