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 17 #ifndef ACCESSIBILITY_TOUCHEVENT_INJECTOR_H 18 #define ACCESSIBILITY_TOUCHEVENT_INJECTOR_H 19 20 #include <time.h> 21 #include "accessibility_event_transmission.h" 22 #include "event_handler.h" 23 #include "event_runner.h" 24 #include "accessibility_gesture_inject_path.h" 25 #include "pointer_event.h" 26 #include "singleton.h" 27 28 namespace OHOS { 29 namespace Accessibility { 30 const int64_t DOUBLE_TAP_MIN_TIME = 50000; // microsecond 31 32 struct SendEventArgs { 33 std::shared_ptr<MMI::PointerEvent> event_; 34 }; 35 36 class TouchEventInjector; 37 class TouchInjectHandler : public AppExecFwk::EventHandler { 38 public: 39 TouchInjectHandler(const std::shared_ptr<AppExecFwk::EventRunner> &runner, TouchEventInjector &server); 40 virtual ~TouchInjectHandler() = default; 41 /** 42 * @brief Process the event of install system bundles. 43 * @param event Indicates the event to be processed. 44 */ 45 virtual void ProcessEvent(const AppExecFwk::InnerEvent::Pointer &event) override; 46 private: 47 TouchEventInjector &server_; 48 }; 49 50 class TouchEventInjector : public EventTransmission, public AppExecFwk::EventHandler { 51 public: 52 static constexpr uint32_t SEND_TOUCH_EVENT_MSG = 1; 53 54 /** 55 * @brief A constructor used to create a TouchEventInjector instance. 56 */ 57 TouchEventInjector(); 58 59 /** 60 * @brief A destructor used to delete the TouchEventInjector instance. 61 */ ~TouchEventInjector()62 ~TouchEventInjector() {} 63 64 /** 65 * @brief Handle pointer events from previous event stream node. 66 * @param event the pointer event from Multimodal 67 * @return true: the event has been processed and does not need to be passed to the next node; 68 * false: the event is not processed. 69 */ 70 bool OnPointerEvent(MMI::PointerEvent &event) override; 71 72 /** 73 * @brief Destroy event state. 74 */ 75 void DestroyEvents() override; 76 77 /** 78 * @brief Send pointer event to next stream node. 79 * @param event the touch event prepared to send 80 */ 81 void SendPointerEvent(MMI::PointerEvent &event); 82 83 /** 84 * @brief Inject simulated gestures. 85 * @param gesturePath the gesture path 86 */ 87 void InjectEvents(const std::shared_ptr<AccessibilityGestureInjectPath>& gesturePath); 88 89 private: 90 /** 91 * @brief Cancel the gesture. 92 */ 93 void CancelGesture(); 94 95 /** 96 * @brief Cancel the injected events. 97 */ 98 void CancelInjectedEvents(); 99 100 /** 101 * @brief create touchevent. 102 * @param action the action of event 103 * @param point the endpoint of event 104 * @return the created touchevent 105 */ 106 std::shared_ptr<MMI::PointerEvent> obtainTouchEvent(int32_t action, 107 MMI::PointerEvent::PointerItem point, int64_t actionTime); 108 109 /** 110 * @brief Get the number of microseconds elapsed since the system was booted. 111 * @return the number of microseconds elapsed since the system was booted 112 */ 113 int64_t GetSystemTime(); 114 115 /** 116 * @brief Parse taps events. 117 * @param startTime the start time of gesture injection 118 * @param gesturePath the gesture path 119 */ 120 void ParseTapsEvents(int64_t startTime, const std::shared_ptr<AccessibilityGestureInjectPath>& gesturePath); 121 122 /** 123 * @brief Parse move events. 124 * @param startTime the start time of gesture injection 125 * @param gesturePath the gesture path 126 */ 127 void ParseMovesEvents(int64_t startTime, const std::shared_ptr<AccessibilityGestureInjectPath>& gesturePath); 128 129 /** 130 * @brief Parse touchevents from gesturepath. 131 * @param startTime the start time of gesture injection 132 * @param gesturePath the gesture path 133 */ 134 void ParseTouchEventsFromGesturePath(int64_t startTime, 135 const std::shared_ptr<AccessibilityGestureInjectPath>& gesturePath); 136 137 bool isGestureUnderway_ = false; 138 bool isDestroyEvent_ = false; 139 std::shared_ptr<TouchInjectHandler> handler_ = nullptr; 140 std::shared_ptr<AppExecFwk::EventRunner> runner_ = nullptr; 141 std::vector<std::shared_ptr<MMI::PointerEvent>> injectedEvents_; 142 }; 143 } // namespace Accessibility 144 } // namespace OHOS 145 #endif // ACCESSIBILITY_TOUCHEVENT_INJECTOR_H