1 /* 2 * Copyright (C) 2023 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 use crate::{ 17 input_binding, input_binding::CKeyEvent 18 }; 19 20 /// KeyEvent packed the native CKeyEvent 21 #[repr(C)] 22 pub struct KeyEvent(*const CKeyEvent); 23 24 impl KeyEvent { 25 /// Create a KeyEvent object new(key_event: *const CKeyEvent) -> Self26 pub fn new(key_event: *const CKeyEvent) -> Self { 27 Self(key_event) 28 } 29 30 /// Extract a raw `CKeyEvent` pointer from this wrapper 31 /// # Safety as_inner(&self) -> *const CKeyEvent32 pub unsafe fn as_inner(&self) -> *const CKeyEvent { 33 self.0 34 } 35 36 /// Create an `KeyEvent` wrapper object from a raw `CKeyEvent` pointer. from_raw(c_key_event: *const CKeyEvent) -> Option<Self>37 pub fn from_raw(c_key_event: *const CKeyEvent) -> Option<Self> { 38 if c_key_event.is_null() { 39 return None; 40 } 41 Some(Self(c_key_event)) 42 } 43 } 44 45 impl KeyEvent { 46 /// key add flag. add_flag(&self)47 pub fn add_flag(&self) { 48 // SAFETY: 49 // Rust KeyEvent always hold a valid native CKeyEvent. 50 unsafe { 51 input_binding::CKeyEventAddFlag(self.as_inner()) 52 } 53 } 54 55 /// get key code. key_code(&self) -> i3256 pub fn key_code(&self) -> i32 { 57 // SAFETY: 58 // Rust KeyEvent always hold a valid native CKeyEvent. 59 unsafe { 60 input_binding::CGetKeyCode(self.as_inner()) 61 } 62 } 63 }