1 /* 2 * Copyright (c) 2020-2021 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 GRAPHIC_LITE_POINTER_INPUT_DEVICE_H 17 #define GRAPHIC_LITE_POINTER_INPUT_DEVICE_H 18 19 #include "hal_tick.h" 20 #include "dock/input_device.h" 21 #include "components/ui_view_group.h" 22 23 namespace OHOS { 24 /** @brief A pointer input device. */ 25 class PointerInputDevice : public InputDevice { 26 public: PointerInputDevice()27 PointerInputDevice() 28 : touchableView_(nullptr), draggableView_(nullptr), targetView_(nullptr), lastPos_({0, 0}), 29 dragLastPos_({0, 0}), curPos_({ 0, 0 }), dragStep_({ 0, 0 }), dragLen_({ 0, 0 }), pressState_(false), 30 pressSent_(false), longPressSent_(false), cancelSent_(false), isDragging_(false), needClick_(true), 31 pressTimeStamp_(0) 32 {} ~PointerInputDevice()33 virtual ~PointerInputDevice() {} 34 35 protected: 36 void DispatchEvent(const DeviceData& data) override; 37 38 private: 39 UIView* touchableView_; 40 UIView* draggableView_; 41 UIView* targetView_; 42 Point lastPos_; 43 Point dragLastPos_; 44 Point curPos_; 45 Point dragStep_; 46 Point dragLen_; 47 bool pressState_; 48 bool pressSent_; 49 bool longPressSent_; 50 bool cancelSent_; 51 bool isDragging_; 52 bool needClick_; 53 uint32_t pressTimeStamp_; 54 55 void DispatchPressEvent(UIViewGroup* rootView); 56 void DispatchReleaseEvent(UIViewGroup* rootView); 57 void DispatchDragStartEvent(); 58 void DispatchDragEndEvent(); 59 void DispatchDragEvent(); 60 void DispatchLongPressEvent(uint32_t elapse); 61 void DispatchCancelEvent(); 62 bool ProcessReleaseEvent(); GetDraggableView(UIView * targetView)63 UIView* GetDraggableView(UIView* targetView) const 64 { 65 UIView* tempView = targetView; 66 while ((tempView != nullptr) && tempView->IsDragParentInstead()) { 67 tempView = tempView->GetParent(); 68 } 69 if ((tempView == nullptr) || !tempView->IsDraggable()) { 70 return nullptr; 71 } 72 return tempView; 73 } 74 }; 75 }; // namespace OHOS 76 #endif // GRAPHIC_LITE_POINTER_INPUT_DEVICE_H 77