1 /* 2 * Copyright (C) 2022 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef IMF_KEYBOARD_EVENT_H 17 #define IMF_KEYBOARD_EVENT_H 18 19 #include <cstdint> 20 #include <functional> 21 22 #include "global.h" 23 #include "key_event.h" 24 25 namespace OHOS { 26 namespace MiscServices { 27 using KeyHandle = std::function<int32_t(uint32_t)>; 28 29 class KeyboardEvent { 30 public: 31 static KeyboardEvent &GetInstance(); 32 static int32_t AddKeyEventMonitor(KeyHandle handle); 33 static constexpr uint8_t SHIFT_LEFT_MASK = 0X1; 34 static constexpr uint8_t SHIFT_RIGHT_MASK = 0X1 << 1; 35 static constexpr uint8_t CTRL_LEFT_MASK = 0X1 << 2; 36 static constexpr uint8_t CTRL_RIGHT_MASK = 0X1 << 3; 37 static constexpr uint8_t CAPS_MASK = 0X1 << 4; 38 39 private: 40 static constexpr int32_t PRESS_KEY_DELAY_MS = 200; 41 KeyboardEvent() = default; 42 KeyboardEvent(const KeyboardEvent &) = delete; 43 KeyboardEvent(KeyboardEvent &&) = delete; 44 KeyboardEvent &operator=(const KeyboardEvent &) = delete; 45 KeyboardEvent &operator=(KeyboardEvent &&) = delete; 46 }; 47 } // namespace MiscServices 48 } // namespace OHOS 49 #endif // IMF_KEYBOARD_EVENT_H 50