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_INPUTREADER_CURSOR_BUTTON_ACCUMULATOR_H
18 #define _UI_INPUTREADER_CURSOR_BUTTON_ACCUMULATOR_H
19 
20 #include <stdint.h>
21 
22 namespace android {
23 
24 class InputDevice;
25 struct RawEvent;
26 
27 /* Keeps track of the state of mouse or touch pad buttons. */
28 class CursorButtonAccumulator {
29 public:
30     CursorButtonAccumulator();
31     void reset(InputDevice* device);
32 
33     void process(const RawEvent* rawEvent);
34 
35     uint32_t getButtonState() const;
36 
37 private:
38     bool mBtnLeft;
39     bool mBtnRight;
40     bool mBtnMiddle;
41     bool mBtnBack;
42     bool mBtnSide;
43     bool mBtnForward;
44     bool mBtnExtra;
45     bool mBtnTask;
46 
47     void clearButtons();
48 };
49 
50 } // namespace android
51 
52 #endif // _UI_INPUTREADER_CURSOR_BUTTON_ACCUMULATOR_H