1 /* 2 * Copyright 2024 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 <android-base/result.h> 20 #include <input/Input.h> 21 #include <input/InputDevice.h> 22 23 #include "rust/cxx.h" 24 25 namespace android { 26 27 namespace input { 28 namespace keyboardClassifier { 29 struct KeyboardClassifier; 30 } 31 } // namespace input 32 33 /* 34 * Keyboard classifier to classify keyboard into alphabetic and non-alphabetic keyboards 35 */ 36 class KeyboardClassifier { 37 public: 38 KeyboardClassifier(); 39 /** 40 * Get the type of keyboard that the classifier currently believes the device to be. 41 */ 42 KeyboardType getKeyboardType(DeviceId deviceId); 43 void notifyKeyboardChanged(DeviceId deviceId, const InputDeviceIdentifier& identifier, 44 uint32_t deviceClasses); 45 void processKey(DeviceId deviceId, int32_t evdevCode, uint32_t metaState); 46 47 private: 48 std::optional<rust::Box<android::input::keyboardClassifier::KeyboardClassifier>> 49 mRustClassifier; 50 std::unordered_map<DeviceId, KeyboardType> mKeyboardTypeMap; 51 }; 52 53 } // namespace android 54