C++ GET_MEMBER_NAME_CHECKED函數代碼示例

void UEnvQueryGenerator_OnCircle::PostEditChangeProperty( struct FPropertyChangedEvent& PropertyChangedEvent) 
{
	static const FName NAME_Angle = GET_MEMBER_NAME_CHECKED(UEnvQueryGenerator_OnCircle, Angle);
	static const FName NAME_Radius = GET_MEMBER_NAME_CHECKED(UEnvQueryGenerator_OnCircle, Radius);

	if (PropertyChangedEvent.Property != NULL)
	{
		const FName PropName = PropertyChangedEvent.MemberProperty->GetFName();
		if (PropName == NAME_Angle)
		{
			Angle.Value = FMath::Clamp(Angle.Value, 0.0f, 360.f);
			AngleRadians = FMath::DegreesToRadians(Angle.Value);
			bDefineArc = Angle.Value < 360.f && Angle.Value > 0.f;
		}
		else if (PropName == NAME_Radius)
		{
			if (Radius.Value <= 0.f)
			{
				Radius.Value = 100.f;
			}
		}

		ItemSpacing.Value = FMath::Max(1.0f, ItemSpacing.Value);
	}

	Super::PostEditChangeProperty(PropertyChangedEvent);
}

void AFlySkillActor::PostEditChangeProperty(FPropertyChangedEvent& PropertyChangedEvent)
{
	FName PropertyName = (PropertyChangedEvent.Property != nullptr) ? PropertyChangedEvent.Property->GetFName() : NAME_None;

	if ((PropertyName == GET_MEMBER_NAME_CHECKED(AFlySkillActor, UseTargetLocation)))
	{
		if (UseTargetLocation)
		{
			UseTargetActor = false;
		}
		else
		{
			UseTargetActor = true;
		}
	}
	else if ((PropertyName == GET_MEMBER_NAME_CHECKED(AFlySkillActor, UseTargetActor)))
	{
		if (UseTargetActor)
		{
			UseTargetLocation = false;
		}
		else
		{
			UseTargetLocation = true;
		}
	}
	Super::PostEditChangeProperty(PropertyChangedEvent);
}

void FCinematicOptionsCustomization::CustomizeChildren(TSharedRef<class IPropertyHandle> StructPropertyHandle, class IDetailChildrenBuilder& ChildBuilder, IPropertyTypeCustomizationUtils& StructCustomizationUtils)
{
	bPlayMatinee = StructPropertyHandle->GetChildHandle(GET_MEMBER_NAME_CHECKED(FBTDialogueCinematicOptions, bPlayMatinee));
	bLoop = StructPropertyHandle->GetChildHandle(GET_MEMBER_NAME_CHECKED(FBTDialogueCinematicOptions, bLoop));
	Matinee = StructPropertyHandle->GetChildHandle(GET_MEMBER_NAME_CHECKED(FBTDialogueCinematicOptions, Matinee));

	ChildBuilder.AddChildProperty(StructPropertyHandle->GetChildHandle(GET_MEMBER_NAME_CHECKED(FBTDialogueCinematicOptions, bPlayMatinee)).ToSharedRef());
	ChildBuilder.AddChildProperty(StructPropertyHandle->GetChildHandle(GET_MEMBER_NAME_CHECKED(FBTDialogueCinematicOptions, bLoop)).ToSharedRef());

	ChildBuilder.AddChildContent(LOCTEXT("Matinee", "Matinee"))
		.NameContent()
		[
			Matinee->CreatePropertyNameWidget()
		]
	.ValueContent()
		.HAlign(HAlign_Fill)
		[
			SNew(SHorizontalBox)
			+ SHorizontalBox::Slot()
			.MaxWidth(109.0f)
			[
				SNew(SComboButton)
				.OnGetMenuContent(this, &FCinematicOptionsCustomization::OnGetMatineeList)
				.ContentPadding(FMargin(2.0f, 2.0f))
				.ButtonContent()
				[
					SNew(STextBlock)
					.Text(this, &FCinematicOptionsCustomization::GetCurrentMatineeName)
					.Font(IDetailLayoutBuilder::GetDetailFont())
				]
			]
		];
}

void FFoliageTypePaintingCustomization::CustomizeDetails(IDetailLayoutBuilder& DetailLayoutBuilder)
{
    // Hide categories we are not going to customize
    FFoliageTypeCustomizationHelpers::HideFoliageCategory(DetailLayoutBuilder, "Procedural");
    FFoliageTypeCustomizationHelpers::HideFoliageCategory(DetailLayoutBuilder, "Reapply");

    // Show all the properties with a reapply condition or that depend on another variable to be relevant
    TMap<const FName, IDetailPropertyRow*> PropertyRowsByName;
    ShowFoliagePropertiesForCategory(DetailLayoutBuilder, "Painting", PropertyRowsByName);
    ShowFoliagePropertiesForCategory(DetailLayoutBuilder, "Placement", PropertyRowsByName);
    ShowFoliagePropertiesForCategory(DetailLayoutBuilder, "InstanceSettings", PropertyRowsByName);

    // Density adjustment factor should only be visible when reapplying
    FFoliageTypeCustomizationHelpers::ModifyFoliagePropertyRow(*PropertyRowsByName.Find(GET_MEMBER_NAME_CHECKED(UFoliageType, DensityAdjustmentFactor)),
            TAttribute<EVisibility>::Create(TAttribute<EVisibility>::FGetter::CreateSP(this, &FFoliageTypePaintingCustomization::GetReapplyModeVisibility)),
            TAttribute<bool>());

    // Set the scale visibility attribute for each axis
    Scaling = DetailLayoutBuilder.GetProperty(GET_MEMBER_NAME_CHECKED(UFoliageType, Scaling));
    ReapplyScaling = DetailLayoutBuilder.GetProperty(GET_MEMBER_NAME_CHECKED(UFoliageType, ReapplyScaling));
    FFoliageTypeCustomizationHelpers::ModifyFoliagePropertyRow(*PropertyRowsByName.Find(GET_MEMBER_NAME_CHECKED(UFoliageType, ScaleX)),
            TAttribute<EVisibility>::Create(TAttribute<EVisibility>::FGetter::CreateSP(this, &FFoliageTypePaintingCustomization::GetScaleVisibility, EAxis::X)),
            TAttribute<bool>());

    FFoliageTypeCustomizationHelpers::ModifyFoliagePropertyRow(*PropertyRowsByName.Find(GET_MEMBER_NAME_CHECKED(UFoliageType, ScaleY)),
            TAttribute<EVisibility>::Create(TAttribute<EVisibility>::FGetter::CreateSP(this, &FFoliageTypePaintingCustomization::GetScaleVisibility, EAxis::Y)),
            TAttribute<bool>());

    FFoliageTypeCustomizationHelpers::ModifyFoliagePropertyRow(*PropertyRowsByName.Find(GET_MEMBER_NAME_CHECKED(UFoliageType, ScaleZ)),
            TAttribute<EVisibility>::Create(TAttribute<EVisibility>::FGetter::CreateSP(this, &FFoliageTypePaintingCustomization::GetScaleVisibility, EAxis::Z)),
            TAttribute<bool>());
}

void UEnvQueryGenerator_OnCircle::PostEditChangeProperty( FPropertyChangedEvent& PropertyChangedEvent) 
{
	if (PropertyChangedEvent.Property != NULL)
	{
		const FName PropName = PropertyChangedEvent.MemberProperty->GetFName();
		if (PropName == GET_MEMBER_NAME_CHECKED(UEnvQueryGenerator_OnCircle, ArcAngle))
		{
			ArcAngle.DefaultValue = FMath::Clamp(ArcAngle.DefaultValue, 0.0f, 360.f);
			AngleRadians = FMath::DegreesToRadians(ArcAngle.DefaultValue);
			bDefineArc = (ArcAngle.DefaultValue < 360.f) && (ArcAngle.DefaultValue > 0.f);
		}
		else if (PropName == GET_MEMBER_NAME_CHECKED(UEnvQueryGenerator_OnCircle, CircleRadius))
		{
			if (CircleRadius.DefaultValue <= 0.f)
			{
				CircleRadius.DefaultValue = 100.f;
			}
		}
		else if (PropName == GET_MEMBER_NAME_CHECKED(UEnvQueryGenerator_OnCircle, SpaceBetween))
		{
			SpaceBetween.DefaultValue = FMath::Max(1.0f, SpaceBetween.DefaultValue);
		}
	}

	Super::PostEditChangeProperty(PropertyChangedEvent);
}

void FTileLODEntryDetailsCustomization::CustomizeChildren(TSharedRef<IPropertyHandle> StructPropertyHandle, 
																	class IDetailChildrenBuilder& ChildBuilder, 
																	IPropertyTypeCustomizationUtils& StructCustomizationUtils )
{
	LODIndexHandle = StructPropertyHandle->GetChildHandle(
		GET_MEMBER_NAME_CHECKED(FTileLODEntryDetails, LODIndex)
		);
	
	TSharedPtr<IPropertyHandle> DistanceProperty = StructPropertyHandle->GetChildHandle(
		GET_MEMBER_NAME_CHECKED(FTileLODEntryDetails, Distance)
		);
	
	TSharedPtr<IPropertyHandle> SimplificationDetails = StructPropertyHandle->GetChildHandle(
		GET_MEMBER_NAME_CHECKED(FTileLODEntryDetails, SimplificationDetails)
		);

	ChildBuilder.AddChildProperty(LODIndexHandle.ToSharedRef())
		.Visibility(EVisibility::Hidden);

	ChildBuilder.AddChildProperty(DistanceProperty.ToSharedRef())
		.IsEnabled(TAttribute<bool>::Create(TAttribute<bool>::FGetter::CreateSP(this, &FTileLODEntryDetailsCustomization::IsLODDistanceEnabled)));
	
	ChildBuilder.AddChildProperty(SimplificationDetails.ToSharedRef())
		.IsEnabled(TAttribute<bool>::Create(TAttribute<bool>::FGetter::CreateSP(this, &FTileLODEntryDetailsCustomization::IsGenerateTileEnabled)));
}

void FDerivedCustomization::CustomizeDetails(IDetailLayoutBuilder& DetailLayout)
{
	// So now we're customizing UDerivedClass object
	// First, try to hide an inherited property
	{
		// 'HideMe' property is defined in UBaseClass
		TSharedPtr<IPropertyHandle> PropertyToHide = DetailLayout.GetProperty(GET_MEMBER_NAME_CHECKED(UDerivedClass, HideMe));

		PropertyToHide->MarkHiddenByCustomization();
	}
	
	
	{
		// Now grab any struct property (or property that has customized property value widget)
		// Note that this is property defined in UDerivedClass!
		TSharedPtr<IPropertyHandle> TestProperty = DetailLayout.GetProperty(GET_MEMBER_NAME_CHECKED(UDerivedClass, Vector2dProperty));

		// Hide this property
		TestProperty->MarkHiddenByCustomization();

		// Get a category so we can add a TestProperty back to the panel
		IDetailCategoryBuilder& DerivedCategory = DetailLayout.EditCategory("Derived");
		DerivedCategory.AddCustomRow(LOCTEXT("DerivedObjectLabel", "Derived"))
			.NameContent()
			[
				TestProperty->CreatePropertyNameWidget()
			]
		.ValueContent()
			[
				// This will return NullWidget - thats the problem
				TestProperty->CreatePropertyValueWidget()
			];
	}
}

void UIOSRuntimeSettings::PostEditChangeProperty(struct FPropertyChangedEvent& PropertyChangedEvent)
{
	Super::PostEditChangeProperty(PropertyChangedEvent);

	// Ensure that at least one orientation is supported
	if (!bSupportsPortraitOrientation && !bSupportsUpsideDownOrientation && !bSupportsLandscapeLeftOrientation && !bSupportsLandscapeRightOrientation)
	{
		bSupportsPortraitOrientation = true;
		UpdateSinglePropertyInConfigFile(GetClass()->FindPropertyByName(GET_MEMBER_NAME_CHECKED(UIOSRuntimeSettings, bSupportsPortraitOrientation)), GetDefaultConfigFilename());
	}

	// Ensure that at least one API is supported
	if (!bSupportsMetal && !bSupportsOpenGLES2 && !bSupportsMetalMRT)
	{
		bSupportsOpenGLES2 = true;
		UpdateSinglePropertyInConfigFile(GetClass()->FindPropertyByName(GET_MEMBER_NAME_CHECKED(UIOSRuntimeSettings, bSupportsOpenGLES2)), GetDefaultConfigFilename());
	}

	// Ensure that at least armv7 is selected for shipping and dev
	if (!bDevForArmV7 && !bDevForArm64 && !bDevForArmV7S)
	{
		bDevForArmV7 = true;
		UpdateSinglePropertyInConfigFile(GetClass()->FindPropertyByName(GET_MEMBER_NAME_CHECKED(UIOSRuntimeSettings, bDevForArmV7)), GetDefaultConfigFilename());
	}
	if (!bShipForArmV7 && !bShipForArm64 && !bShipForArmV7S)
	{
		bShipForArmV7 = true;
		UpdateSinglePropertyInConfigFile(GetClass()->FindPropertyByName(GET_MEMBER_NAME_CHECKED(UIOSRuntimeSettings, bShipForArmV7)), GetDefaultConfigFilename());
	}
}

void FAxisMappingsNodeBuilder::OnAxisMappingNameCommitted(const FText& InName, ETextCommit::Type CommitInfo, const FMappingSet MappingSet)
{
	const FScopedTransaction Transaction(LOCTEXT("RenameAxisMapping_Transaction", "Rename Axis Mapping"));

	FName NewName = FName(*InName.ToString());
	FName CurrentName = NewName;

	if (MappingSet.Mappings.Num() > 0)
	{
		MappingSet.Mappings[0]->GetChildHandle(GET_MEMBER_NAME_CHECKED(FInputAxisKeyMapping, AxisName))->GetValue(CurrentName);
	}

	if (NewName != CurrentName)
	{
		for (int32 Index = 0; Index < MappingSet.Mappings.Num(); ++Index)
		{
			MappingSet.Mappings[Index]->GetChildHandle(GET_MEMBER_NAME_CHECKED(FInputAxisKeyMapping, AxisName))->SetValue(NewName);
		}

		if (MappingSet.DetailGroup)
		{
			RenamedGroupExpansionState.Key = NewName;
			RenamedGroupExpansionState.Value = MappingSet.DetailGroup->GetExpansionState();

			// Don't want to save expansion state of old name
			MappingSet.DetailGroup->ToggleExpansion(false);
		}
	}
}

void FCameraLensSettingsCustomization::CustomizeChildren(TSharedRef<IPropertyHandle> StructPropertyHandle, class IDetailChildrenBuilder& ChildBuilder, IPropertyTypeCustomizationUtils& StructCustomizationUtils)
{
	// Retrieve structure's child properties
	uint32 NumChildren;
	StructPropertyHandle->GetNumChildren(NumChildren);
	TMap<FName, TSharedPtr< IPropertyHandle > > PropertyHandles;
	for (uint32 ChildIndex = 0; ChildIndex < NumChildren; ++ChildIndex)
	{
		TSharedRef<IPropertyHandle> ChildHandle = StructPropertyHandle->GetChildHandle(ChildIndex).ToSharedRef();
		const FName PropertyName = ChildHandle->GetProperty()->GetFName();
		PropertyHandles.Add(PropertyName, ChildHandle);
	}
	
	// Retrieve special case properties
	MinFocalLengthHandle = PropertyHandles.FindChecked(GET_MEMBER_NAME_CHECKED(FCameraLensSettings, MinFocalLength));
	MaxFocalLengthHandle = PropertyHandles.FindChecked(GET_MEMBER_NAME_CHECKED(FCameraLensSettings, MaxFocalLength));
	MinFStopHandle = PropertyHandles.FindChecked(GET_MEMBER_NAME_CHECKED(FCameraLensSettings, MinFStop));
	MaxFStopHandle = PropertyHandles.FindChecked(GET_MEMBER_NAME_CHECKED(FCameraLensSettings, MaxFStop));
	MinFocusDistanceHandle = PropertyHandles.FindChecked(GET_MEMBER_NAME_CHECKED(FCameraLensSettings, MinimumFocusDistance));

	for (auto Iter(PropertyHandles.CreateConstIterator()); Iter; ++Iter)
	{
		if (Iter.Value() == MinFocusDistanceHandle)
		{
			// skip showing these in the panel for now, as we don't really use them
			continue;
		}

		IDetailPropertyRow& SettingsRow = ChildBuilder.AddChildProperty(Iter.Value().ToSharedRef());
	}
}

void UGameMapsSettings::PostReloadConfig( UProperty* PropertyThatWasLoaded )
{
	if (PropertyThatWasLoaded)
	{
		if (PropertyThatWasLoaded->GetFName() == GET_MEMBER_NAME_CHECKED(UGameMapsSettings, EditorStartupMap))
		{
			FixMapAssetRef(EditorStartupMap);
		}
		else if (PropertyThatWasLoaded->GetFName() == GET_MEMBER_NAME_CHECKED(UGameMapsSettings, GameDefaultMap))
		{
			FixMapAssetRef(GameDefaultMap);
		}
		else if (PropertyThatWasLoaded->GetFName() == GET_MEMBER_NAME_CHECKED(UGameMapsSettings, ServerDefaultMap))
		{
			FixMapAssetRef(ServerDefaultMap);
		}
		else if (PropertyThatWasLoaded->GetFName() == GET_MEMBER_NAME_CHECKED(UGameMapsSettings, TransitionMap))
		{
			FixMapAssetRef(TransitionMap);
		}
	}
	else
	{
		FixMapAssetRef(EditorStartupMap);
		FixMapAssetRef(GameDefaultMap);
		FixMapAssetRef(ServerDefaultMap);
		FixMapAssetRef(TransitionMap);
	}
}

void AAudioVolume::PostEditChangeProperty(FPropertyChangedEvent& PropertyChangedEvent)
{
	Super::PostEditChangeProperty(PropertyChangedEvent);

	Settings.Volume = FMath::Clamp<float>( Settings.Volume, 0.0f, 1.0f );
	AmbientZoneSettings.InteriorTime = FMath::Max<float>( 0.01f, AmbientZoneSettings.InteriorTime );
	AmbientZoneSettings.InteriorLPFTime = FMath::Max<float>( 0.01f, AmbientZoneSettings.InteriorLPFTime );
	AmbientZoneSettings.ExteriorTime = FMath::Max<float>( 0.01f, AmbientZoneSettings.ExteriorTime );
	AmbientZoneSettings.ExteriorLPFTime = FMath::Max<float>( 0.01f, AmbientZoneSettings.ExteriorLPFTime );

	if (PropertyChangedEvent.Property && PropertyChangedEvent.Property->GetFName() == GET_MEMBER_NAME_CHECKED(AAudioVolume, Priority))
	{
		GetWorld()->AudioVolumes.Sort([](const AAudioVolume& A, const AAudioVolume& B) { return (A.GetPriority() > B.GetPriority()); });
	}

	if (PropertyChangedEvent.Property && PropertyChangedEvent.Property->GetFName() == GET_MEMBER_NAME_CHECKED(AAudioVolume, bEnabled))
	{
		if (bEnabled)
		{
			AddProxy();
		}
		else
		{
			RemoveProxy();
		}
	}
	else if (bEnabled)
	{
		UpdateProxy();
	}

}

void ADynamicWeather::PostEditChangeProperty(FPropertyChangedEvent &Event)
{
  Super::PostEditChangeProperty(Event);
  const FName PropertyName = (Event.Property != NULL ? Event.Property->GetFName() : NAME_None);
  if (PropertyName == GET_MEMBER_NAME_CHECKED(ADynamicWeather, Weather)) {
    Update();
  } else if ((PropertyName == GET_MEMBER_NAME_CHECKED(ADynamicWeather, bSaveToConfigFile)) ||
             (PropertyName == GET_MEMBER_NAME_CHECKED(ADynamicWeather, bLoadFromConfigFile))) {
    // Do nothing.
  } else {
    AdjustSunPositionBasedOnActorRotation();
  }
  if (bSaveToConfigFile) {
    bSaveToConfigFile = false;
    if (SaveToConfigFile()) {
      UE_LOG(LogCarla, Log, TEXT("Weather \"%s\" saved to config file"), *Weather.Name);
    } else {
      UE_LOG(LogCarla, Error, TEXT("Error saving weather to config file"));
    }
  }
  if (bLoadFromConfigFile) {
    bLoadFromConfigFile = false;
    if (LoadFromConfigFile()) {
      UE_LOG(LogCarla, Log, TEXT("Weather \"%s\" loaded from config file"), *Weather.Name);
      Update();
    } else {
      UE_LOG(LogCarla, Error, TEXT("Error loading weather from config file"));
    }
  }
}

void USplineComponent::PostEditChangeProperty(FPropertyChangedEvent& PropertyChangedEvent)
{
	if (PropertyChangedEvent.Property != nullptr)
	{
		const FName PropertyName(PropertyChangedEvent.Property->GetFName());
		if (PropertyName == GET_MEMBER_NAME_CHECKED(USplineComponent, ReparamStepsPerSegment) ||
			PropertyName == GET_MEMBER_NAME_CHECKED(USplineComponent, bStationaryEndpoints))
		{
			UpdateSpline();
		}

		if (PropertyName == GET_MEMBER_NAME_CHECKED(USplineComponent, bClosedLoop))
		{
			if (bClosedLoop)
			{
				// Spline is guaranteed to be non-looping when we get here (due to PreEditChange).
				// Now just force the loop endpoint to be added if bClosedLoop == true.
				AddLoopEndpoint();
			}

			UpdateSpline();
		}
	}

	Super::PostEditChangeProperty(PropertyChangedEvent);
}

void FSpriteDetailsCustomization::BuildTextureSection(IDetailCategoryBuilder& SpriteCategory, IDetailLayoutBuilder& DetailLayout)
{
	// Grab information about the material
	TSharedPtr<IPropertyHandle> DefaultMaterialProperty = DetailLayout.GetProperty(GET_MEMBER_NAME_CHECKED(UPaperSprite, DefaultMaterial));

	FText SourceTextureOverrideLabel;
	if (DefaultMaterialProperty.IsValid())
	{
		UObject* DefaultMaterialAsObject;
		if (DefaultMaterialProperty->GetValue(/*out*/ DefaultMaterialAsObject) == FPropertyAccess::Success)
		{
			if (UMaterialInterface* DefaultMaterialInterface = Cast<UMaterialInterface>(DefaultMaterialAsObject))
			{
				if (UMaterial* DefaultMaterial = DefaultMaterialInterface->GetMaterial())
				{
					// Get a list of sprite samplers
					TArray<const UMaterialExpressionSpriteTextureSampler*> SpriteSamplerExpressions;
					DefaultMaterial->GetAllExpressionsOfType(/*inout*/ SpriteSamplerExpressions);

					// Turn that into a set of labels
					for (const UMaterialExpressionSpriteTextureSampler* Sampler : SpriteSamplerExpressions)
					{
						if (!Sampler->SlotDisplayName.IsEmpty())
						{
							if (Sampler->bSampleAdditionalTextures)
							{
								AdditionalTextureLabels.FindOrAdd(Sampler->AdditionalSlotIndex) = Sampler->SlotDisplayName;
							}
							else
							{
								SourceTextureOverrideLabel = Sampler->SlotDisplayName;
							}
						}
					}
				}
			}
		}
	}

	// Create the base texture widget
	TSharedPtr<IPropertyHandle> SourceTextureProperty = DetailLayout.GetProperty(GET_MEMBER_NAME_CHECKED(UPaperSprite, SourceTexture));
	DetailLayout.HideProperty(SourceTextureProperty);
	SpriteCategory.AddCustomRow(SourceTextureProperty->GetPropertyDisplayName())
		.NameContent()
		[
			CreateTextureNameWidget(SourceTextureProperty, SourceTextureOverrideLabel)
		]
		.ValueContent()
		.MaxDesiredWidth(TOptional<float>())
		[
			SourceTextureProperty->CreatePropertyValueWidget()
		];

	// Create the additional textures widget
	TSharedPtr<IPropertyHandle> AdditionalSourceTexturesProperty = DetailLayout.GetProperty(GET_MEMBER_NAME_CHECKED(UPaperSprite, AdditionalSourceTextures));
	TSharedRef<FDetailArrayBuilder> AdditionalSourceTexturesBuilder = MakeShareable(new FDetailArrayBuilder(AdditionalSourceTexturesProperty.ToSharedRef()));
	AdditionalSourceTexturesBuilder->OnGenerateArrayElementWidget(FOnGenerateArrayElementWidget::CreateSP(this, &FSpriteDetailsCustomization::GenerateAdditionalTextureWidget));
	SpriteCategory.AddCustomBuilder(AdditionalSourceTexturesBuilder);
}