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_INPUT_READER_CONTEXT_H
18 #define _UI_INPUTREADER_INPUT_READER_CONTEXT_H
19 
20 #include <input/InputDevice.h>
21 
22 #include <vector>
23 
24 namespace android {
25 
26 class EventHubInterface;
27 class InputDevice;
28 class InputListenerInterface;
29 class InputMapper;
30 class InputReaderPolicyInterface;
31 struct StylusState;
32 
33 /* Internal interface used by individual input devices to access global input device state
34  * and parameters maintained by the input reader.
35  */
36 class InputReaderContext {
37 public:
InputReaderContext()38     InputReaderContext() {}
~InputReaderContext()39     virtual ~InputReaderContext() {}
40 
41     virtual void updateGlobalMetaState() = 0;
42     virtual int32_t getGlobalMetaState() = 0;
43 
44     virtual void disableVirtualKeysUntil(nsecs_t time) = 0;
45     virtual bool shouldDropVirtualKey(nsecs_t now, InputDevice* device, int32_t keyCode,
46                                       int32_t scanCode) = 0;
47 
48     virtual void fadePointer() = 0;
49 
50     virtual void requestTimeoutAtTime(nsecs_t when) = 0;
51     virtual int32_t bumpGeneration() = 0;
52 
53     virtual void getExternalStylusDevices(std::vector<InputDeviceInfo>& outDevices) = 0;
54     virtual void dispatchExternalStylusState(const StylusState& outState) = 0;
55 
56     virtual InputReaderPolicyInterface* getPolicy() = 0;
57     virtual InputListenerInterface* getListener() = 0;
58     virtual EventHubInterface* getEventHub() = 0;
59 
60     virtual uint32_t getNextSequenceNum() = 0;
61 };
62 
63 } // namespace android
64 
65 #endif // _UI_INPUTREADER_INPUT_READER_CONTEXT_H
66