services/inputflinger/reader/include/InputReaderContext.h

/*
 * Copyright (C) 2019 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef _UI_INPUTREADER_INPUT_READER_CONTEXT_H
#define _UI_INPUTREADER_INPUT_READER_CONTEXT_H

#include <input/InputDevice.h>

#include <vector>

namespace android {

class EventHubInterface;
class InputDevice;
class InputListenerInterface;
class InputMapper;
class InputReaderPolicyInterface;
struct StylusState;

/* Internal interface used by individual input devices to access global input device state
 * and parameters maintained by the input reader.
 */
class InputReaderContext {
public:
    InputReaderContext() {}
    virtual ~InputReaderContext() {}

    virtual void updateGlobalMetaState() = 0;
    virtual int32_t getGlobalMetaState() = 0;

    virtual void disableVirtualKeysUntil(nsecs_t time) = 0;
    virtual bool shouldDropVirtualKey(nsecs_t now, InputDevice* device, int32_t keyCode,
                                      int32_t scanCode) = 0;

    virtual void fadePointer() = 0;

    virtual void requestTimeoutAtTime(nsecs_t when) = 0;
    virtual int32_t bumpGeneration() = 0;

    virtual void getExternalStylusDevices(std::vector<InputDeviceInfo>& outDevices) = 0;
    virtual void dispatchExternalStylusState(const StylusState& outState) = 0;

    virtual InputReaderPolicyInterface* getPolicy() = 0;
    virtual InputListenerInterface* getListener() = 0;
    virtual EventHubInterface* getEventHub() = 0;

    virtual uint32_t getNextSequenceNum() = 0;
};

} // namespace android

#endif // _UI_INPUTREADER_INPUT_READER_CONTEXT_H