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_ROTARY_ENCODER_INPUT_MAPPER_H
18 #define _UI_INPUTREADER_ROTARY_ENCODER_INPUT_MAPPER_H
19 
20 #include "CursorScrollAccumulator.h"
21 #include "InputMapper.h"
22 
23 namespace android {
24 
25 class RotaryEncoderInputMapper : public InputMapper {
26 public:
27     explicit RotaryEncoderInputMapper(InputDeviceContext& deviceContext);
28     virtual ~RotaryEncoderInputMapper();
29 
30     virtual uint32_t getSources() override;
31     virtual void populateDeviceInfo(InputDeviceInfo* deviceInfo) override;
32     virtual void dump(std::string& dump) override;
33     virtual void configure(nsecs_t when, const InputReaderConfiguration* config,
34                            uint32_t changes) override;
35     virtual void reset(nsecs_t when) override;
36     virtual void process(const RawEvent* rawEvent) override;
37 
38 private:
39     CursorScrollAccumulator mRotaryEncoderScrollAccumulator;
40 
41     int32_t mSource;
42     float mScalingFactor;
43     int32_t mOrientation;
44 
45     void sync(nsecs_t when);
46 };
47 
48 } // namespace android
49 
50 #endif // _UI_INPUTREADER_ROTARY_ENCODER_INPUT_MAPPER_H