#include <UMGDragDropOp.h>

Inheritance diagram for FUMGDragDropOp:

Public Member Functions
	FUMGDragDropOp ()

virtual void	AddReferencedObjects (FReferenceCollector &Collector) override

virtual FString	GetReferencerName () const override

virtual bool	AffectedByPointerEvent (const FPointerEvent &PointerEvent) override

virtual void	OnDrop (bool bDropWasHandled, const FPointerEvent &MouseEvent) override

virtual void	OnDragged (const class FDragDropEvent &DragDropEvent) override

virtual FCursorReply	OnCursorQuery () override

virtual TSharedPtr< SWidget >	GetDefaultDecorator () const override

UDragDropOperation *	GetOperation () const

Public Member Functions inherited from FGameDragDropOperation
SLATECORE_API	FGameDragDropOperation ()

virtual SLATECORE_API FVector2D	GetDecoratorPosition () const override

Public Member Functions inherited from FDragDropOperation
SLATECORE_API	FDragDropOperation ()

virtual SLATECORE_API	~FDragDropOperation ()

template<class TType >
bool	IsOfType () const

virtual SLATECORE_API void	SetDecoratorVisibility (bool bVisible)

virtual bool	IsExternalOperation () const

virtual bool	IsWindowlessOperation () const

SLATECORE_API void	SetCursorOverride (TOptional< EMouseCursor::Type > CursorType)

virtual bool	IsOfTypeImpl (const FString &Type) const

Public Member Functions inherited from TSharedFromThis< FDragDropOperation >
TSharedRef< FDragDropOperation, Mode >	AsShared ()

TSharedRef< FDragDropOperation const, Mode >	AsShared () const

TSharedRef< SubobjectType, Mode >	AsSharedSubobject (SubobjectType *SubobjectPtr) const

TWeakPtr< FDragDropOperation, Mode >	AsWeak ()

TWeakPtr< FDragDropOperation const, Mode >	AsWeak () const

TWeakPtr< SubobjectType, Mode >	AsWeakSubobject (SubobjectType *SubobjectPtr) const

void	UpdateWeakReferenceInternal (TSharedPtr< SharedPtrType, SharedPtrMode > const InSharedPtr, OtherType InObject) const

void	UpdateWeakReferenceInternal (TSharedRef< SharedRefType, SharedPtrMode > const InSharedRef, OtherType InObject) const

UE_FORCEINLINE_HINT bool	DoesSharedInstanceExist () const

Public Member Functions inherited from FGCObject
	FGCObject ()

	FGCObject (const FGCObject &Other)

	FGCObject (FGCObject &&Other)

	FGCObject (EFlags Flags)

virtual	~FGCObject ()

FGCObject &	operator= (const FGCObject &)

FGCObject &	operator= (FGCObject &&)

COREUOBJECT_API void	RegisterGCObject ()

COREUOBJECT_API void	UnregisterGCObject ()

virtual bool	GetReferencerPropertyName (UObject *Object, FString &OutPropertyName) const

Static Public Member Functions
static UMG_API TSharedRef< FUMGDragDropOp >	New (UDragDropOperation *Operation, const int32 PointerIndex, const FVector2D &CursorPosition, const FVector2D &ScreenPositionOfNode, float DPIScale, TSharedPtr< SObjectWidget > SourceUserWidget)

Static Public Member Functions inherited from FGCObject
static COREUOBJECT_API void	StaticInit ()

Protected Member Functions
virtual void	Construct () override

Protected Member Functions inherited from FDragDropOperation
SLATECORE_API void	CreateCursorDecoratorWindow ()

SLATECORE_API void	DestroyCursorDecoratorWindow ()

virtual TSharedPtr< FDragDropOperation >	ConvertTo (const FString &TypeId)

Protected Member Functions inherited from TSharedFromThis< FDragDropOperation >
	TSharedFromThis ()

	TSharedFromThis (TSharedFromThis const &)

UE_FORCEINLINE_HINT TSharedFromThis &	operator= (TSharedFromThis const &)

	~TSharedFromThis ()

Additional Inherited Members
Public Types inherited from FGCObject
enum class	EFlags : uint32 { None = 0 , RegisterLater = 1 << 0 , AddStableNativeReferencesOnly = 1 << 1 }

Static Public Attributes inherited from FGCObject
static COREUOBJECT_API UGCObjectReferencer *	GGCObjectReferencer = nullptr

Static Protected Member Functions inherited from TSharedFromThis< FDragDropOperation >
static UE_FORCEINLINE_HINT TSharedRef< OtherType, Mode >	SharedThis (OtherType *ThisPtr)

static UE_FORCEINLINE_HINT TSharedRef< OtherType const, Mode >	SharedThis (const OtherType *ThisPtr)

Protected Attributes inherited from FGameDragDropOperation
FVector2D	DecoratorPosition

Protected Attributes inherited from FDragDropOperation
bool	bCreateNewWindow

TSharedPtr< SWindow >	CursorDecoratorWindow

TOptional< EMouseCursor::Type >	MouseCursor

TOptional< EMouseCursor::Type >	MouseCursorOverride

Detailed Description

This is the drag/drop class used for UMG, all UMG drag drop operations utilize this operation. It supports moving a UObject payload and using a UWidget decorator.

Constructor & Destructor Documentation

◆ FUMGDragDropOp()

FUMGDragDropOp::FUMGDragDropOp ( )

Member Function Documentation

◆ AddReferencedObjects()

void FUMGDragDropOp::AddReferencedObjects ( FReferenceCollector & Collector )

overridevirtual

Pure virtual that must be overloaded by the inheriting class. Use this method to serialize any UObjects contained that you wish to keep around.

Parameters

Collector The collector of referenced objects.

Implements FGCObject.

◆ AffectedByPointerEvent()

bool FUMGDragDropOp::AffectedByPointerEvent ( const FPointerEvent & PointerEvent )

overridevirtual

Checks if this drag and drop operation is affected by a given PointerEvent.

Parameters

PointerEvent The mouse event we are checking against

Returns: true if the the pointer event affects this drag and drop operation (default true).

Reimplemented from FDragDropOperation.

◆ Construct()

void FUMGDragDropOp::Construct ( )

overrideprotectedvirtual

Constructs the window and widget if applicable.

Reimplemented from FDragDropOperation.

◆ GetDefaultDecorator()

TSharedPtr< SWidget > FUMGDragDropOp::GetDefaultDecorator ( ) const

overridevirtual

Gets the widget that will serve as the decorator unless overridden. If you do not override, you will have no decorator

Reimplemented from FDragDropOperation.

◆ GetOperation()

UDragDropOperation * FUMGDragDropOp::GetOperation ( ) const

inline

◆ GetReferencerName()

FString FUMGDragDropOp::GetReferencerName ( ) const

overridevirtual

Overload this method to report a name for your referencer

Implements FGCObject.

◆ New()

TSharedRef< FUMGDragDropOp > FUMGDragDropOp::New	(	UDragDropOperation *	Operation,
		const int32	PointerIndex,
		const FVector2D &	CursorPosition,
		const FVector2D &	ScreenPositionOfNode,
		float	DPIScale,
		TSharedPtr< SObjectWidget >	SourceUserWidget
	)

static

◆ OnCursorQuery()

FCursorReply FUMGDragDropOp::OnCursorQuery ( )

overridevirtual

Allows drag/drop operations to override the current cursor

Reimplemented from FDragDropOperation.

◆ OnDragged()

void FUMGDragDropOp::OnDragged ( const class FDragDropEvent & DragDropEvent )

overridevirtual

Called when the mouse was moved during a drag and drop operation

Parameters

DragDropEvent The event that describes this drag drop operation.

Reimplemented from FDragDropOperation.

◆ OnDrop()

void FUMGDragDropOp::OnDrop	(	bool	bDropWasHandled,
		const FPointerEvent &	MouseEvent
	)

overridevirtual

Invoked when the drag and drop operation has ended.

Parameters

bDropWasHandled	true when the drop was handled by some widget; false otherwise
MouseEvent	The mouse event which caused the on drop to be called.

Reimplemented from FDragDropOperation.

The documentation for this class was generated from the following files:

Engine/Source/Runtime/UMG/Public/Slate/UMGDragDropOp.h
Engine/Source/Runtime/UMG/Private/Slate/UMGDragDropOp.cpp

Public Member Functions

Static Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ FUMGDragDropOp()

Member Function Documentation

◆ AddReferencedObjects()

◆ AffectedByPointerEvent()

◆ Construct()

◆ GetDefaultDecorator()

◆ GetOperation()

◆ GetReferencerName()

◆ New()

◆ OnCursorQuery()

◆ OnDragged()

◆ OnDrop()