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/*
* 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_CURSOR_INPUT_MAPPER_H
#define _UI_INPUTREADER_CURSOR_INPUT_MAPPER_H
#include "CursorButtonAccumulator.h"
#include "CursorScrollAccumulator.h"
#include "InputMapper.h"
#include <PointerControllerInterface.h>
#include <input/VelocityControl.h>
namespace android {
class VelocityControl;
class PointerControllerInterface;
class CursorButtonAccumulator;
class CursorScrollAccumulator;
/* Keeps track of cursor movements. */
class CursorMotionAccumulator {
public:
CursorMotionAccumulator();
void reset(InputDeviceContext& deviceContext);
void process(const RawEvent* rawEvent);
void finishSync();
inline int32_t getRelativeX() const { return mRelX; }
inline int32_t getRelativeY() const { return mRelY; }
private:
int32_t mRelX;
int32_t mRelY;
void clearRelativeAxes();
};
class CursorInputMapper : public InputMapper {
public:
explicit CursorInputMapper(InputDeviceContext& deviceContext);
virtual ~CursorInputMapper();
virtual uint32_t getSources() override;
virtual void populateDeviceInfo(InputDeviceInfo* deviceInfo) override;
virtual void dump(std::string& dump) override;
virtual void configure(nsecs_t when, const InputReaderConfiguration* config,
uint32_t changes) override;
virtual void reset(nsecs_t when) override;
virtual void process(const RawEvent* rawEvent) override;
virtual int32_t getScanCodeState(uint32_t sourceMask, int32_t scanCode) override;
virtual std::optional<int32_t> getAssociatedDisplayId() override;
private:
// Amount that trackball needs to move in order to generate a key event.
static const int32_t TRACKBALL_MOVEMENT_THRESHOLD = 6;
// Immutable configuration parameters.
struct Parameters {
enum Mode {
MODE_POINTER,
MODE_POINTER_RELATIVE,
MODE_NAVIGATION,
};
Mode mode;
bool hasAssociatedDisplay;
bool orientationAware;
} mParameters;
CursorButtonAccumulator mCursorButtonAccumulator;
CursorMotionAccumulator mCursorMotionAccumulator;
CursorScrollAccumulator mCursorScrollAccumulator;
int32_t mSource;
float mXScale;
float mYScale;
float mXPrecision;
float mYPrecision;
float mVWheelScale;
float mHWheelScale;
// Velocity controls for mouse pointer and wheel movements.
// The controls for X and Y wheel movements are separate to keep them decoupled.
VelocityControl mPointerVelocityControl;
VelocityControl mWheelXVelocityControl;
VelocityControl mWheelYVelocityControl;
int32_t mOrientation;
std::shared_ptr<PointerControllerInterface> mPointerController;
int32_t mButtonState;
nsecs_t mDownTime;
void configureParameters();
void dumpParameters(std::string& dump);
void sync(nsecs_t when);
};
} // namespace android
#endif // _UI_INPUTREADER_CURSOR_INPUT_MAPPER_H