部Slot里面的都是作为这个Slate里面的ChildSlot出现

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1. // Fill out your copyright notice in the Description page of Project Settings.
   
2. 
   
3. #pragma once
   
4. 
   
5. #include "CoreMinimal.h"
   
6. #include "SGridDragDrop.h"
   
7. #include "LevelEditorViewport.h"
   
8. 
   
9. /**
   
10. *
    
11. */
    
12. class DLLEXPORT MyAnimationSlate : public SCompoundWidget
    
13. {
    
14. public:
    
15.         //SLATE_BEGIN_ARGS+SLATE_END_ARGS 其实是一个结构体, 内部写的东西都相当于写在了一个结构体里面
    
16.         SLATE_BEGIN_ARGS(MyAnimationSlate)
    
17.         {
    
18.                 _Visibility = EVisibility::SelfHitTestInvisible;
    
19.         }
    
20. 
    
21.         //外部Slot里面的都是作为这个Slate里面的ChildSlot出现
    
22.         SLATE_DEFAULT_SLOT(FArguments, OutSlots)
    
23. 
    
24.                 SLATE_END_ARGS()
    
25. 
    
26.                 //外部执行SNew或者SAssignNew时候会调用Construct()
    
27.                 void Construct(const FArguments& InArgs);
    
28. 
    
29.         //鼠标进入
    
30.         virtual void OnMouseEnter(const FGeometry& MyGeometry, const FPointerEvent& MouseEvent) override;
    
31. 
    
32.         //鼠标离开
    
33.         virtual void OnMouseLeave(const FPointerEvent& MouseEvent) override;
    
34.         //
    
35.         UWorld* SetWorldRay(const FVector2D& ScreenPosition);
    
36.         //颜色变化
    
37.         virtual void Tick(const FGeometry& AllottedGeometry, const double InCurrentTime, const float InDeltaTime) override;
    
38. 
    
39.         FLinearColor SlateColorChanged();
    
40.         virtual FReply OnMouseButtonDown(const FGeometry& MyGeometry, const FPointerEvent& MouseEvent) override;
    
41.         virtual FReply OnDragDetected(const FGeometry& MyGeometry,const FPointerEvent& MouseEvent) override;
    
42.         virtual void OnDragEnter(const FGeometry& MyGeometry, const FDragDropEvent& DragDropEvent) override;
    
43.         virtual void OnDragLeave(const FDragDropEvent& DragDropEvent) override;
    
44.         //virtual FReply OnDragOver(const FGeometry& MyGeometry, const FDragDropEvent& DragDropEvent) override;
    
45.         virtual FReply OnDrop(const FGeometry& MyGeometry, const FDragDropEvent& DragDropEvent) override;
    
46. private:
    
47.         //Slate动画对象
    
48.         FCurveSequence MySlateCurveSequence;
    
49. };
    

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