| /** |
| * Copyright (C) 2019 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.view; |
| |
| import android.view.IDisplayWindowRotationCallback; |
| |
| /** |
| * Singular controller of a "remote" display rotation. When a display rotation is started, WM |
| * freezes the screen. It will then call into this controller and wait for a response via the |
| * callback. |
| * |
| * This needs to provide configuration changes because those changes need to be applied in sync |
| * with the actual display rotation to prevent relayouts with mismatched information. |
| * |
| * The flow is like this: |
| * 1. DisplayContent/Rotation freezes the screen |
| * 2. This controller is notified of a rotation and provided a callback. |
| * 3. This controller is responsible for collecting a set of configuration changes to go along with |
| * the rotation. |
| * 4. The callback is fired which tells DisplayContent/Rotation to apply the provided configuration |
| * changes and continue the rotation. |
| * |
| * @hide |
| */ |
| oneway interface IDisplayWindowRotationController { |
| |
| /** |
| * Called when WM needs to know how to update tasks in response to a display rotation. |
| * If this isn't called, a timeout will continue the rotation in WM. |
| * |
| * @param displayId the display that is rotating. |
| * @param fromRotation the rotation the display is rotating from. |
| * @param toRotation the rotation the display is rotating to. |
| * @param callback A callback to be called when this has calculated updated configs. |
| */ |
| void onRotateDisplay(int displayId, int fromRotation, int toRotation, |
| in IDisplayWindowRotationCallback callback); |
| } |