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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_MULTI_TOUCH_INPUT_MAPPER_H
#define _UI_INPUTREADER_MULTI_TOUCH_INPUT_MAPPER_H
#include "TouchInputMapper.h"
namespace android {
/* Keeps track of the state of multi-touch protocol. */
class MultiTouchMotionAccumulator {
public:
class Slot {
public:
inline bool isInUse() const { return mInUse; }
inline int32_t getX() const { return mAbsMTPositionX; }
inline int32_t getY() const { return mAbsMTPositionY; }
inline int32_t getTouchMajor() const { return mAbsMTTouchMajor; }
inline int32_t getTouchMinor() const {
return mHaveAbsMTTouchMinor ? mAbsMTTouchMinor : mAbsMTTouchMajor;
}
inline int32_t getToolMajor() const { return mAbsMTWidthMajor; }
inline int32_t getToolMinor() const {
return mHaveAbsMTWidthMinor ? mAbsMTWidthMinor : mAbsMTWidthMajor;
}
inline int32_t getOrientation() const { return mAbsMTOrientation; }
inline int32_t getTrackingId() const { return mAbsMTTrackingId; }
inline int32_t getPressure() const { return mAbsMTPressure; }
inline int32_t getDistance() const { return mAbsMTDistance; }
inline int32_t getToolType() const;
private:
friend class MultiTouchMotionAccumulator;
bool mInUse;
bool mHaveAbsMTTouchMinor;
bool mHaveAbsMTWidthMinor;
bool mHaveAbsMTToolType;
int32_t mAbsMTPositionX;
int32_t mAbsMTPositionY;
int32_t mAbsMTTouchMajor;
int32_t mAbsMTTouchMinor;
int32_t mAbsMTWidthMajor;
int32_t mAbsMTWidthMinor;
int32_t mAbsMTOrientation;
int32_t mAbsMTTrackingId;
int32_t mAbsMTPressure;
int32_t mAbsMTDistance;
int32_t mAbsMTToolType;
Slot();
void clear();
};
MultiTouchMotionAccumulator();
~MultiTouchMotionAccumulator();
void configure(InputDeviceContext& deviceContext, size_t slotCount, bool usingSlotsProtocol);
void reset(InputDeviceContext& deviceContext);
void process(const RawEvent* rawEvent);
void finishSync();
bool hasStylus() const;
inline size_t getSlotCount() const { return mSlotCount; }
inline const Slot* getSlot(size_t index) const { return &mSlots[index]; }
private:
int32_t mCurrentSlot;
Slot* mSlots;
size_t mSlotCount;
bool mUsingSlotsProtocol;
bool mHaveStylus;
void clearSlots(int32_t initialSlot);
};
class MultiTouchInputMapper : public TouchInputMapper {
public:
explicit MultiTouchInputMapper(InputDeviceContext& deviceContext);
virtual ~MultiTouchInputMapper();
virtual void reset(nsecs_t when) override;
virtual void process(const RawEvent* rawEvent) override;
protected:
virtual void syncTouch(nsecs_t when, RawState* outState);
virtual void configureRawPointerAxes();
virtual bool hasStylus() const;
private:
MultiTouchMotionAccumulator mMultiTouchMotionAccumulator;
// Specifies the pointer id bits that are in use, and their associated tracking id.
BitSet32 mPointerIdBits;
int32_t mPointerTrackingIdMap[MAX_POINTER_ID + 1];
};
} // namespace android
#endif // _UI_INPUTREADER_MULTI_TOUCH_INPUT_MAPPER_H
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