InvalidateWidgetReason.h File Reference

#include "Containers/UnrealString.h"
#include "CoreMinimal.h"
#include "CoreTypes.h"
#include "Misc/EnumClassFlags.h"

Go to the source code of this file.

Typedefs
typedef EInvalidateWidgetReason	EInvalidateWidget

Enumerations
enum class	EInvalidateWidgetReason : uint8 {   None = 0 , Layout = 1 << 0 , Paint = 1 << 1 , Volatility = 1 << 2 ,   ChildOrder = 1 << 3 , RenderTransform = 1 << 4 , Visibility = 1 << 5 , AttributeRegistration = 1 << 6 ,   Prepass = 1 << 7 , PaintAndVolatility = Paint | Volatility , LayoutAndVolatility = Layout | Volatility }

Functions
SLATECORE_API FString	LexToString (EInvalidateWidgetReason Reason)
SLATECORE_API bool	LexTryParseString (EInvalidateWidgetReason &OutMode, const TCHAR *InBuffer)
SLATECORE_API void	LexFromString (EInvalidateWidgetReason &OutMode, const TCHAR *InBuffer)

Typedef Documentation

EInvalidateWidget

typedef EInvalidateWidgetReason EInvalidateWidget

Enumeration Type Documentation

EInvalidateWidgetReason

enum class EInvalidateWidgetReason : uint8

strong

The different types of invalidation that are possible for a widget.

Enumerator
None
Layout	Use Layout invalidation if your widget needs to change desired size. This is an expensive invalidation so do not use if all you need to do is redraw a widget
Paint	Use when the painting of widget has been altered, but nothing affecting sizing.
Volatility	Use if just the volatility of the widget has been adjusted.
ChildOrder	A child was added or removed. (this implies prepass and layout)
RenderTransform	A Widgets render transform changed
Visibility	Changing visibility (this implies layout)
AttributeRegistration	Attributes got bound or unbound (it's used by the SlateAttributeMetaData)
Prepass	Re-cache desired size of all of this widget's children recursively (this implies layout)
PaintAndVolatility	Use Paint invalidation if you're changing a normal property involving painting or sizing. Additionally if the property that was changed affects Volatility in anyway, it's important that you invalidate volatility so that it can be recalculated and cached.
LayoutAndVolatility	Use Layout invalidation if you're changing a normal property involving painting or sizing. Additionally if the property that was changed affects Volatility in anyway, it's important that you invalidate volatility so that it can be recalculated and cached.

Function Documentation

LexFromString()

SLATECORE_API void LexFromString	(	EInvalidateWidgetReason &	OutMode,
		const TCHAR *	InBuffer
	)

LexToString()

SLATECORE_API FString LexToString

(

EInvalidateWidgetReason

Reason

)

LexTryParseString()

SLATECORE_API bool LexTryParseString	(	EInvalidateWidgetReason &	OutMode,
		const TCHAR *	InBuffer
	)