1 /*
2  * Copyright (c) 2021-2022 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 INPUT_EVENT_HANDLER_H
17 #define INPUT_EVENT_HANDLER_H
18 
19 #include <memory>
20 
21 #include "singleton.h"
22 
23 #include "event_dispatch_handler.h"
24 #include "event_filter_handler.h"
25 #include "event_interceptor_handler.h"
26 #include "event_monitor_handler.h"
27 #include "event_normalize_handler.h"
28 #include "i_event_filter.h"
29 #include "i_input_event_handler.h"
30 #include "key_command_handler.h"
31 #include "key_subscriber_handler.h"
32 #ifdef OHOS_BUILD_ENABLE_POINTER
33 #include "mouse_event_normalize.h"
34 #endif // OHOS_BUILD_ENABLE_POINTER
35 // #ifdef OHOS_BUILD_ENABLE_SWITCH
36 #include "switch_subscriber_handler.h"
37 // #endif // OHOS_BUILD_ENABLE_SWITCH
38 
39 namespace OHOS {
40 namespace MMI {
41 using EventFun = std::function<int32_t(libinput_event *event)>;
42 using NotifyDeviceChange = std::function<void(int32_t, int32_t, char *)>;
43 class InputEventHandler final : public std::enable_shared_from_this<InputEventHandler> {
44     DECLARE_DELAYED_SINGLETON(InputEventHandler);
45 public:
46     DISALLOW_COPY_AND_MOVE(InputEventHandler);
47     void Init(UDSServer& udsServer);
48     void OnEvent(void *event, int64_t frameTime);
49     UDSServer *GetUDSServer() const;
50     int32_t GetIntervalSinceLastInput(int64_t &timeInterval);
51 
52     std::shared_ptr<EventNormalizeHandler> GetEventNormalizeHandler() const;
53     std::shared_ptr<EventInterceptorHandler> GetInterceptorHandler() const;
54     std::shared_ptr<KeySubscriberHandler> GetSubscriberHandler() const;
55     std::shared_ptr<SwitchSubscriberHandler> GetSwitchSubscriberHandler() const;
56     std::shared_ptr<KeyCommandHandler> GetKeyCommandHandler() const;
57     std::shared_ptr<EventMonitorHandler> GetMonitorHandler() const;
58     std::shared_ptr<EventFilterHandler> GetFilterHandler() const;
59     std::shared_ptr<EventDispatchHandler> GetEventDispatchHandler() const;
60 
61 private:
62     int32_t BuildInputHandlerChain();
63     bool IsTouchpadMistouch(libinput_event* event);
64     bool IsTouchpadTapMistouch(libinput_event* event);
65 
66     UDSServer *udsServer_ { nullptr };
67     std::shared_ptr<EventNormalizeHandler> eventNormalizeHandler_ { nullptr };
68     std::shared_ptr<EventFilterHandler> eventFilterHandler_ { nullptr };
69     std::shared_ptr<EventInterceptorHandler> eventInterceptorHandler_ { nullptr };
70     std::shared_ptr<KeySubscriberHandler> eventSubscriberHandler_ { nullptr };
71     std::shared_ptr<SwitchSubscriberHandler> switchEventSubscriberHandler_ { nullptr };
72     std::shared_ptr<KeyCommandHandler> eventKeyCommandHandler_ { nullptr };
73     std::shared_ptr<EventMonitorHandler> eventMonitorHandler_ { nullptr };
74     std::shared_ptr<EventDispatchHandler> eventDispatchHandler_ { nullptr };
75 
76     uint64_t idSeed_ { 0 };
77     bool isTyping_ { false };
78     int32_t timerId_ { -1 };
79     bool isTapMistouch_ { false };
80     int64_t lastEventBeginTime_ { 0 };
81 };
82 #define InputHandler ::OHOS::DelayedSingleton<InputEventHandler>::GetInstance()
83 } // namespace MMI
84 } // namespace OHOS
85 #endif // INPUT_EVENT_HANDLER_H
86