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  3. FDraggableBoxUIDragOperation

FDraggableBoxUIDragOperation

A drag/drop operation used by [SDraggableBox](API\Plugins\ModelingEditorUI\ModelingWidgets\SDraggableBox), largely modeled on [FInViewportUIDragOperation](API\Editor\EditorFramework\Viewports\FInViewportUIDragOperation), except instead of requiring the drop location to be able to handle that particular class to trigger the OnDragComplete delegate, it just triggers on any drop.

API > API/Plugins > API/Plugins/ModelingEditorUI > API/Plugins/ModelingEditorUI/ModelingWidgets

Inheritance Hierarchy

References

   
Module ModelingEditorUI
Header /Engine/Plugins/Experimental/MeshModelingToolsetExp/Source/ModelingEditorUI/Public/ModelingWidgets/SDraggableBox.h
Include #include "ModelingWidgets/SDraggableBox.h"

Syntax

class FDraggableBoxUIDragOperation : public FDragDropOperation

Remarks

A drag/drop operation used by SDraggableBox, largely modeled on FInViewportUIDragOperation, except instead of requiring the drop location to be able to handle that particular class to trigger the OnDragComplete delegate, it just triggers on any drop. This makes it possible to use it in any viewports, not just the level editor.

Variables

  Type Name Description
Protected variable FVector2D DecoratorOffsetFromCursor Screen space offset of grab location from the top left corner of the rectangle being dragged.
Protected variable FVector2D LastContentSize Size of rectangle being dragged.
Protected variable SDraggableBox::FOnDragComplete OnDragComplete  
Protected variable TSharedPtr< class SWidget > UIBeingDragged Shared pointer to our contents, which are a weak pointer.

Constructors

  Type Name Description
Protected function  

FDraggableBoxUIDragOperation ( const TSharedRef< class SWidget >& InUIToBeDragged,
const FVector2D InDecoratorOffsetFromCursor,
const FVector2D& OwnerAreaSize,
SDraggableBox::FOnDragComplete& OnDragCompletee
)

 The constructor is protected, so that this class can only be instantiated as a shared pointer.

Destructors

  Type Name Description
Public function Virtual    

Functions

  Type Name Description
Public function Static const FString &  
Public function Static TSharedRef< FDraggableBoxUIDragOperation >

New ( const TSharedRef< class SWidget >& InUIToBeDragged,
const FVector2D InDecoratorOffset,
const FVector2D& OwnerAreaSize,
SDraggableBox::FOnDragComplete& OnDragComplete
)

 Create this Drag and Drop Content
Public function Virtual void

OnDragged ( const FDragDropEvent& DragDropEvent
)

  

Overridden from FDragDropOperation

  Type Name Description
Public function Virtual Const bool

IsOfTypeImpl ( const FString& Type
)

 Checks whether this drag and drop operation can cast safely to the specified type.
Public function Virtual void

OnDrop ( bool bDropWasHandled,
const FPointerEvent& MouseEvent
)

 FDragDropOperation.

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