1 /* 2 * Copyright (C) 2022 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.window; 18 19 import android.annotation.IntDef; 20 21 /** 22 * Holds constants related to task managements but not suitable in {@code TaskOrganizer}. 23 * @hide 24 */ 25 public class TaskConstants { 26 27 /** 28 * Sizes of a z-order region assigned to child layers of task layers. Components are allowed to 29 * use all values in [assigned value, assigned value + region size). 30 * @hide 31 */ 32 public static final int TASK_CHILD_LAYER_REGION_SIZE = 10000; 33 34 /** 35 * Indicates system responding to task drag resizing while app content isn't updated. 36 * @hide 37 */ 38 public static final int TASK_CHILD_LAYER_TASK_BACKGROUND = -3 * TASK_CHILD_LAYER_REGION_SIZE; 39 40 /** 41 * Provides solid color letterbox background or blur effect and dimming for the wallpaper 42 * letterbox background. It also listens to touches for double tap gesture for repositioning 43 * letterbox. 44 * @hide 45 */ 46 public static final int TASK_CHILD_LAYER_LETTERBOX_BACKGROUND = 47 -2 * TASK_CHILD_LAYER_REGION_SIZE; 48 49 /** 50 * When a unresizable app is moved in the different configuration, a restart button appears 51 * allowing to adapt (~resize) app to the new configuration mocks. 52 * @hide 53 */ 54 public static final int TASK_CHILD_LAYER_SIZE_COMPAT_RESTART_BUTTON = 55 TASK_CHILD_LAYER_REGION_SIZE; 56 57 /** 58 * Shown the first time an app is opened in size compat mode in landscape. 59 * @hide 60 */ 61 public static final int TASK_CHILD_LAYER_LETTERBOX_EDUCATION = 2 * TASK_CHILD_LAYER_REGION_SIZE; 62 63 /** 64 * Captions, window frames and resize handlers around task windows. 65 * @hide 66 */ 67 public static final int TASK_CHILD_LAYER_WINDOW_DECORATIONS = 3 * TASK_CHILD_LAYER_REGION_SIZE; 68 69 /** 70 * Overlays the task when going into PIP w/ gesture navigation. 71 * @hide 72 */ 73 public static final int TASK_CHILD_LAYER_RECENTS_ANIMATION_PIP_OVERLAY = 74 4 * TASK_CHILD_LAYER_REGION_SIZE; 75 76 /** 77 * Allows other apps to add overlays on the task (i.e. game dashboard) 78 * @hide 79 */ 80 public static final int TASK_CHILD_LAYER_TASK_OVERLAY = 5 * TASK_CHILD_LAYER_REGION_SIZE; 81 82 /** 83 * Legacy machanism to force an activity to the top of the task (i.e. for work profile 84 * comfirmation). 85 * @hide 86 */ 87 public static final int TASK_CHILD_LAYER_TASK_OVERLAY_ACTIVITIES = 88 6 * TASK_CHILD_LAYER_REGION_SIZE; 89 90 /** 91 * Z-orders of task child layers other than activities, task fragments and layers interleaved 92 * with them, e.g. IME windows. [-10000, 10000) is reserved for these layers. 93 * @hide 94 */ 95 @IntDef({ 96 TASK_CHILD_LAYER_TASK_BACKGROUND, 97 TASK_CHILD_LAYER_LETTERBOX_BACKGROUND, 98 TASK_CHILD_LAYER_SIZE_COMPAT_RESTART_BUTTON, 99 TASK_CHILD_LAYER_LETTERBOX_EDUCATION, 100 TASK_CHILD_LAYER_WINDOW_DECORATIONS, 101 TASK_CHILD_LAYER_RECENTS_ANIMATION_PIP_OVERLAY, 102 TASK_CHILD_LAYER_TASK_OVERLAY, 103 TASK_CHILD_LAYER_TASK_OVERLAY_ACTIVITIES 104 }) 105 public @interface TaskChildLayer {} 106 } 107