1 /*
2  * Copyright (C) 2019 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 #ifndef _UI_INPUT_INPUTDISPATCHER_TOUCHSTATE_H
18 #define _UI_INPUT_INPUTDISPATCHER_TOUCHSTATE_H
19 
20 #include "Monitor.h"
21 #include "TouchedWindow.h"
22 
23 namespace android {
24 
25 class InputWindowHandle;
26 
27 namespace inputdispatcher {
28 
29 struct TouchState {
30     bool down;
31     bool split;
32     int32_t deviceId;  // id of the device that is currently down, others are rejected
33     uint32_t source;   // source of the device that is current down, others are rejected
34     int32_t displayId; // id to the display that currently has a touch, others are rejected
35     std::vector<TouchedWindow> windows;
36 
37     // This collects the portal windows that the touch has gone through. Each portal window
38     // targets a display (embedded display for most cases). With this info, we can add the
39     // monitoring channels of the displays touched.
40     std::vector<sp<android::InputWindowHandle>> portalWindows;
41 
42     std::vector<TouchedMonitor> gestureMonitors;
43 
44     TouchState();
45     ~TouchState();
46     void reset();
47     void copyFrom(const TouchState& other);
48     void addOrUpdateWindow(const sp<android::InputWindowHandle>& windowHandle, int32_t targetFlags,
49                            BitSet32 pointerIds);
50     void addPortalWindow(const sp<android::InputWindowHandle>& windowHandle);
51     void addGestureMonitors(const std::vector<TouchedMonitor>& monitors);
52     void removeWindow(const sp<android::InputWindowHandle>& windowHandle);
53     void removeWindowByToken(const sp<IBinder>& token);
54     void filterNonAsIsTouchWindows();
55     void filterNonMonitors();
56     sp<InputWindowHandle> getFirstForegroundWindowHandle() const;
57     bool isSlippery() const;
58 };
59 
60 } // namespace inputdispatcher
61 } // namespace android
62 
63 #endif // _UI_INPUT_INPUTDISPATCHER_TOUCHSTATE_H
64