1 /*
2  * Copyright (c) 2021 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 FOUNDATION_ACE_FRAMEWORKS_CORE_EVENT_KEY_EVENT_RECOGNIZER_H
17 #define FOUNDATION_ACE_FRAMEWORKS_CORE_EVENT_KEY_EVENT_RECOGNIZER_H
18 
19 #include <unordered_map>
20 #include <vector>
21 
22 #include "core/event/key_event.h"
23 
24 namespace OHOS::Ace {
25 
26 class KeyEventRecognizer {
27 public:
28     // This method recognizes events by recording raw key events. If the raw event can be identified as a special
29     // event, it returns the raw event and the identified special event, otherwise it returns only the raw event.
30     std::vector<KeyEvent> GetKeyEvents(int32_t keyCode, int32_t keyAction, int32_t repeatTime, int64_t timeStamp = 0,
31         int64_t timeStampStart = 0, int32_t metaKey = 0, int32_t keySource = 0, int64_t deviceId = 0,
32         std::string msg = "");
33 private:
34     std::vector<KeyCode> getPressedKeys() const;
35     void addPressedKey(const int32_t keyCode);
36     void removeReleasedKey(const int32_t keyCode);
37     void clearPressedKey();
38 private:
39     std::unordered_map<int32_t, bool> keyMap_;
40     std::vector<int32_t> keys_;
41 };
42 
43 } // namespace OHOS::Ace
44 
45 #endif // FOUNDATION_ACE_FRAMEWORKS_CORE_EVENT_KEY_EVENT_RECOGNIZER_H
46