1 /* 2 * Copyright 2022 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 #pragma once 18 19 #include <list> 20 #include <memory> 21 #include <set> 22 #include <vector> 23 24 #include <PointerControllerInterface.h> 25 #include <utils/Timers.h> 26 27 #include "CapturedTouchpadEventConverter.h" 28 #include "EventHub.h" 29 #include "InputDevice.h" 30 #include "InputMapper.h" 31 #include "InputReaderBase.h" 32 #include "NotifyArgs.h" 33 #include "accumulator/MultiTouchMotionAccumulator.h" 34 #include "gestures/GestureConverter.h" 35 #include "gestures/HardwareStateConverter.h" 36 #include "gestures/PropertyProvider.h" 37 38 #include "include/gestures.h" 39 40 namespace android { 41 42 class TouchpadInputMapper : public InputMapper { 43 public: 44 template <class T, class... Args> 45 friend std::unique_ptr<T> createInputMapper(InputDeviceContext& deviceContext, 46 const InputReaderConfiguration& readerConfig, 47 Args... args); 48 ~TouchpadInputMapper(); 49 50 uint32_t getSources() const override; 51 void populateDeviceInfo(InputDeviceInfo& deviceInfo) override; 52 void dump(std::string& dump) override; 53 54 [[nodiscard]] std::list<NotifyArgs> reconfigure(nsecs_t when, 55 const InputReaderConfiguration& config, 56 ConfigurationChanges changes) override; 57 [[nodiscard]] std::list<NotifyArgs> reset(nsecs_t when) override; 58 [[nodiscard]] std::list<NotifyArgs> process(const RawEvent* rawEvent) override; 59 60 void consumeGesture(const Gesture* gesture); 61 62 // A subset of InputDeviceIdentifier used for logging metrics, to avoid storing a copy of the 63 // strings in that bigger struct. 64 using MetricsIdentifier = std::tuple<uint16_t /*busId*/, uint16_t /*vendorId*/, 65 uint16_t /*productId*/, uint16_t /*version*/>; 66 67 private: 68 void resetGestureInterpreter(nsecs_t when); 69 explicit TouchpadInputMapper(InputDeviceContext& deviceContext, 70 const InputReaderConfiguration& readerConfig); 71 void updatePalmDetectionMetrics(); 72 [[nodiscard]] std::list<NotifyArgs> sendHardwareState(nsecs_t when, nsecs_t readTime, 73 SelfContainedHardwareState schs); 74 [[nodiscard]] std::list<NotifyArgs> processGestures(nsecs_t when, nsecs_t readTime); 75 76 std::unique_ptr<gestures::GestureInterpreter, void (*)(gestures::GestureInterpreter*)> 77 mGestureInterpreter; 78 std::shared_ptr<PointerControllerInterface> mPointerController; 79 80 PropertyProvider mPropertyProvider; 81 82 // The MultiTouchMotionAccumulator is shared between the HardwareStateConverter and 83 // CapturedTouchpadEventConverter, so that if the touchpad is captured or released while touches 84 // are down, the relevant converter can still benefit from the current axis values stored in the 85 // accumulator. 86 MultiTouchMotionAccumulator mMotionAccumulator; 87 88 HardwareStateConverter mStateConverter; 89 GestureConverter mGestureConverter; 90 CapturedTouchpadEventConverter mCapturedEventConverter; 91 92 bool mPointerCaptured = false; 93 bool mProcessing = false; 94 bool mResettingInterpreter = false; 95 std::vector<Gesture> mGesturesToProcess; 96 metricsIdFromInputDeviceIdentifier(const InputDeviceIdentifier & id)97 static MetricsIdentifier metricsIdFromInputDeviceIdentifier(const InputDeviceIdentifier& id) { 98 return std::make_tuple(id.bus, id.vendor, id.product, id.version); 99 } 100 const MetricsIdentifier mMetricsId; 101 // Tracking IDs for touches on the pad in the last evdev frame. 102 std::set<int32_t> mLastFrameTrackingIds; 103 // Tracking IDs for touches that have at some point been reported as palms by the touchpad. 104 std::set<int32_t> mPalmTrackingIds; 105 }; 106 107 } // namespace android 108