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
23namespace OHOS {
24/** @brief A pointer input device. */
25class PointerInputDevice : public InputDevice {
26public:
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    {}
33    virtual ~PointerInputDevice() {}
34
35protected:
36    void DispatchEvent(const DeviceData& data) override;
37    void OnViewLifeEvent() override;
38
39private:
40    UIView* touchableView_;
41    UIView* draggableView_;
42    UIView* targetView_;
43    Point lastPos_;
44    Point dragLastPos_;
45    Point curPos_;
46    Point dragStep_;
47    Point dragLen_;
48    bool pressState_;
49    bool pressSent_;
50    bool longPressSent_;
51    bool cancelSent_;
52    bool isDragging_;
53    bool needClick_;
54    uint32_t pressTimeStamp_;
55
56    void DispatchPressEvent(UIViewGroup* rootView);
57    void DispatchReleaseEvent(UIViewGroup* rootView);
58    void DispatchDragStartEvent();
59    void DispatchDragEndEvent();
60    void DispatchDragEvent();
61    void DispatchLongPressEvent(uint32_t elapse);
62    void DispatchCancelEvent();
63    bool ProcessReleaseEvent();
64    void UpdateEventViews(UIView* view);
65    UIView* GetDraggableView(UIView* targetView) const
66    {
67        UIView* tempView = targetView;
68        while ((tempView != nullptr) && tempView->IsDragParentInstead()) {
69            tempView = tempView->GetParent();
70        }
71        if ((tempView == nullptr) || !tempView->IsDraggable()) {
72            return nullptr;
73        }
74        return tempView;
75    }
76};
77}; // namespace OHOS
78#endif // GRAPHIC_LITE_POINTER_INPUT_DEVICE_H
79