| /* |
| * 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 com.android.server.wm.utils; |
| |
| import android.graphics.Rect; |
| import android.view.Surface; |
| |
| /** |
| * Utility methods to handle insets represented as rects. |
| */ |
| public class InsetUtils { |
| |
| private InsetUtils() { |
| } |
| |
| /** |
| * Transforms insets given in one rotation into insets in a different rotation. |
| * |
| * @param inOutInsets the insets to transform, is set to the transformed insets |
| * @param rotationDelta the delta between the new and old rotation. |
| * Must be one of Surface.ROTATION_0/90/180/270. |
| */ |
| public static void rotateInsets(Rect inOutInsets, int rotationDelta) { |
| final Rect r = inOutInsets; |
| switch (rotationDelta) { |
| case Surface.ROTATION_0: |
| return; |
| case Surface.ROTATION_90: |
| r.set(r.top, r.right, r.bottom, r.left); |
| break; |
| case Surface.ROTATION_180: |
| r.set(r.right, r.bottom, r.left, r.top); |
| break; |
| case Surface.ROTATION_270: |
| r.set(r.bottom, r.left, r.top, r.right); |
| break; |
| default: |
| throw new IllegalArgumentException("Unknown rotation: " + rotationDelta); |
| } |
| } |
| |
| /** |
| * Adds {@code insetsToAdd} to {@code inOutInsets}. |
| */ |
| public static void addInsets(Rect inOutInsets, Rect insetsToAdd) { |
| inOutInsets.left += insetsToAdd.left; |
| inOutInsets.top += insetsToAdd.top; |
| inOutInsets.right += insetsToAdd.right; |
| inOutInsets.bottom += insetsToAdd.bottom; |
| } |
| } |