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 #ifndef ACCESSIBILITY_SHORT_KEY_H 17 #define ACCESSIBILITY_SHORT_KEY_H 18 19 #include "accessibility_event_transmission.h" 20 #include "event_handler.h" 21 22 namespace OHOS { 23 namespace Accessibility { 24 class AccessibilityShortKey : public EventTransmission { 25 public: 26 AccessibilityShortKey(); 27 virtual ~AccessibilityShortKey(); 28 29 bool OnKeyEvent(MMI::KeyEvent &event) override; 30 void SendKeyEventToNext(); 31 void DestroyEvents() override; 32 33 private: 34 class ShortKeyEventHandler : public AppExecFwk::EventHandler { 35 public: 36 ShortKeyEventHandler(const std::shared_ptr<AppExecFwk::EventRunner> &runner, AccessibilityShortKey &shortKey); 37 virtual ~ShortKeyEventHandler() = default; 38 virtual void ProcessEvent(const AppExecFwk::InnerEvent::Pointer &event) override; 39 40 private: 41 AccessibilityShortKey &shortKey_; 42 }; 43 44 void AddCachedKeyEvent(std::shared_ptr<MMI::KeyEvent> &event); 45 void RecognizeShortKey(MMI::KeyEvent &event); 46 void ClearCachedEventsAndMsg(); 47 bool IsUpValid(); 48 bool IsTriplePress(); 49 void OnShortKey(); 50 51 std::vector<std::shared_ptr<MMI::KeyEvent>> cachedKeyEvents_; 52 std::shared_ptr<ShortKeyEventHandler> timeoutHandler_ = nullptr; 53 int32_t lastKeyAction_ = MMI::KeyEvent::KEY_ACTION_UNKNOWN; 54 }; 55 } // namespace Accessibility 56 } // namespace OHOS 57 #endif // ACCESSIBILITY_SHORT_KEY_H