1 /* 2 * Copyright (C) 2019 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 "TouchInputMapper.h" 20 #include "accumulator/MultiTouchMotionAccumulator.h" 21 22 namespace android { 23 24 class MultiTouchInputMapper : public TouchInputMapper { 25 public: 26 template <class T, class... Args> 27 friend std::unique_ptr<T> createInputMapper(InputDeviceContext& deviceContext, 28 const InputReaderConfiguration& readerConfig, 29 Args... args); 30 explicit MultiTouchInputMapper(InputDeviceContext& deviceContext, 31 const InputReaderConfiguration& readerConfig); 32 33 ~MultiTouchInputMapper() override; 34 35 [[nodiscard]] std::list<NotifyArgs> reset(nsecs_t when) override; 36 [[nodiscard]] std::list<NotifyArgs> process(const RawEvent* rawEvent) override; 37 38 protected: 39 void syncTouch(nsecs_t when, RawState* outState) override; 40 void configureRawPointerAxes() override; 41 bool hasStylus() const override; 42 43 private: 44 // simulate_stylus_with_touch is a debug mode that converts all finger pointers reported by this 45 // mapper's touchscreen into stylus pointers, and adds SOURCE_STYLUS to the input device. 46 // It is used to simulate stylus events for debugging and testing on a device that does not 47 // support styluses. It can be enabled using 48 // "adb shell setprop persist.debug.input.simulate_stylus_with_touch true", 49 // and requires a reboot to take effect. 50 inline bool shouldSimulateStylusWithTouch() const; 51 52 // If the slot is in use, return the bit id. Return std::nullopt otherwise. 53 std::optional<int32_t> getActiveBitId(const MultiTouchMotionAccumulator::Slot& inSlot); 54 MultiTouchMotionAccumulator mMultiTouchMotionAccumulator; 55 56 // Specifies the pointer id bits that are in use, and their associated tracking id. 57 BitSet32 mPointerIdBits; 58 int32_t mPointerTrackingIdMap[MAX_POINTER_ID + 1]; 59 60 bool mStylusMtToolSeen{false}; 61 }; 62 63 } // namespace android 64