1 /*
2  * Copyright (C) 2016 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 com.android.server.wm;
18 
19 import static android.app.WindowConfiguration.WINDOWING_MODE_FREEFORM;
20 
21 /**
22  * Describes the mode in which a window is drag resizing.
23  */
24 class DragResizeMode {
25 
26     /**
27      * Freeform mode: Client surface is fullscreen, and client is responsible to draw window at
28      * the correct position.
29      */
30     static final int DRAG_RESIZE_MODE_FREEFORM = 0;
31 
32     /**
33      * Mode for resizing the docked (and adjacent) root task: Client surface is fullscreen, but
34      * window is drawn at (0, 0), window manager is responsible for positioning the surface when
35      * dragging.
36      */
37     static final int DRAG_RESIZE_MODE_DOCKED_DIVIDER = 1;
38 
isModeAllowedForRootTask(Task rootTask, int mode)39     static boolean isModeAllowedForRootTask(Task rootTask, int mode) {
40         switch (mode) {
41             case DRAG_RESIZE_MODE_FREEFORM:
42                 return rootTask.getWindowingMode() == WINDOWING_MODE_FREEFORM;
43             case DRAG_RESIZE_MODE_DOCKED_DIVIDER:
44                 return rootTask.inSplitScreenWindowingMode();
45             default:
46                 return false;
47         }
48     }
49 }
50