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118 lines
4.0 KiB
118 lines
4.0 KiB
/*
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* Copyright (C) 2019 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _UI_INPUTREADER_MULTI_TOUCH_INPUT_MAPPER_H
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#define _UI_INPUTREADER_MULTI_TOUCH_INPUT_MAPPER_H
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#include "TouchInputMapper.h"
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namespace android {
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/* Keeps track of the state of multi-touch protocol. */
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class MultiTouchMotionAccumulator {
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public:
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class Slot {
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public:
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inline bool isInUse() const { return mInUse; }
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inline int32_t getX() const { return mAbsMTPositionX; }
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inline int32_t getY() const { return mAbsMTPositionY; }
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inline int32_t getTouchMajor() const { return mAbsMTTouchMajor; }
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inline int32_t getTouchMinor() const {
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return mHaveAbsMTTouchMinor ? mAbsMTTouchMinor : mAbsMTTouchMajor;
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}
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inline int32_t getToolMajor() const { return mAbsMTWidthMajor; }
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inline int32_t getToolMinor() const {
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return mHaveAbsMTWidthMinor ? mAbsMTWidthMinor : mAbsMTWidthMajor;
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}
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inline int32_t getOrientation() const { return mAbsMTOrientation; }
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inline int32_t getTrackingId() const { return mAbsMTTrackingId; }
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inline int32_t getPressure() const { return mAbsMTPressure; }
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inline int32_t getDistance() const { return mAbsMTDistance; }
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inline int32_t getToolType() const;
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private:
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friend class MultiTouchMotionAccumulator;
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bool mInUse;
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bool mHaveAbsMTTouchMinor;
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bool mHaveAbsMTWidthMinor;
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bool mHaveAbsMTToolType;
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int32_t mAbsMTPositionX;
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int32_t mAbsMTPositionY;
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int32_t mAbsMTTouchMajor;
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int32_t mAbsMTTouchMinor;
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int32_t mAbsMTWidthMajor;
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int32_t mAbsMTWidthMinor;
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int32_t mAbsMTOrientation;
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int32_t mAbsMTTrackingId;
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int32_t mAbsMTPressure;
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int32_t mAbsMTDistance;
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int32_t mAbsMTToolType;
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Slot();
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void clear();
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};
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MultiTouchMotionAccumulator();
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~MultiTouchMotionAccumulator();
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void configure(InputDeviceContext& deviceContext, size_t slotCount, bool usingSlotsProtocol);
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void reset(InputDeviceContext& deviceContext);
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void process(const RawEvent* rawEvent);
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void finishSync();
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bool hasStylus() const;
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inline size_t getSlotCount() const { return mSlotCount; }
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inline const Slot* getSlot(size_t index) const { return &mSlots[index]; }
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private:
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int32_t mCurrentSlot;
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Slot* mSlots;
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size_t mSlotCount;
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bool mUsingSlotsProtocol;
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bool mHaveStylus;
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void clearSlots(int32_t initialSlot);
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void warnIfNotInUse(const RawEvent& event, const Slot& slot);
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};
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class MultiTouchInputMapper : public TouchInputMapper {
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public:
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explicit MultiTouchInputMapper(InputDeviceContext& deviceContext);
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~MultiTouchInputMapper() override;
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void reset(nsecs_t when) override;
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void process(const RawEvent* rawEvent) override;
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protected:
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void syncTouch(nsecs_t when, RawState* outState) override;
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void configureRawPointerAxes() override;
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bool hasStylus() const override;
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private:
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// If the slot is in use, return the bit id. Return std::nullopt otherwise.
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std::optional<int32_t> getActiveBitId(const MultiTouchMotionAccumulator::Slot& inSlot);
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MultiTouchMotionAccumulator mMultiTouchMotionAccumulator;
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// Specifies the pointer id bits that are in use, and their associated tracking id.
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BitSet32 mPointerIdBits;
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int32_t mPointerTrackingIdMap[MAX_POINTER_ID + 1];
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};
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} // namespace android
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#endif // _UI_INPUTREADER_MULTI_TOUCH_INPUT_MAPPER_H
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