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 #ifndef DISTRIBUTED_INPUT_TOUCHPAD_EVENT_FRAGMENT_MGR_H
17 #define DISTRIBUTED_INPUT_TOUCHPAD_EVENT_FRAGMENT_MGR_H
18 
19 #include "touchpad_event_fragment.h"
20 
21 #include <map>
22 #include <mutex>
23 #include <string>
24 #include <vector>
25 
26 #include "constants_dinput.h"
27 
28 namespace OHOS {
29 namespace DistributedHardware {
30 namespace DistributedInput {
31 class TouchPadEventFragmentMgr {
32 public:
TouchPadEventFragmentMgr()33     TouchPadEventFragmentMgr() : fragments_({}) {}
34 
35     /**
36      * @brief Push the touchpad event
37      *
38      * @param dhId the device dhId where event from
39      * @param event the event
40      * @return std::pair<bool, std::vector<RawEvent>>
41      *     true for NOT whole touchpad event that need simulate back to the other device.
42      *     false for DO Nothing.
43      */
44     std::pair<bool, std::vector<RawEvent>> PushEvent(const std::string &dhId, const RawEvent &event);
45     void Clear(const std::string &dhId);
46     std::vector<RawEvent> GetAndClearEvents(const std::string &dhId);
47 
48 private:
49     bool IsPositionEvent(const RawEvent &event);
50     bool IsSynEvent(const RawEvent &event);
51     bool IsWholeTouchFragments(const std::vector<TouchPadEventFragment> &fragments);
52     std::pair<bool, std::vector<RawEvent>> DealSynEvent(const std::string &dhId);
53 private:
54     std::mutex fragmentsMtx_;
55     // record the event fragments for the dhid. { dhId, { events }}
56     std::map<std::string, std::vector<TouchPadEventFragment>> fragments_;
57 };
58 } // namespace DistributedInput
59 } // namespace DistributedHardware
60 } // namespace OHOS
61 #endif // DISTRIBUTED_INPUT_TOUCHPAD_EVENT_FRAGMENT_MGR_H