C++ IDetailChildrenBuilder::AddChildProperty方法代码示例

void FLandscapeEditorStructCustomization_FGizmoImportLayer::CustomizeChildren(TSharedRef<IPropertyHandle> StructPropertyHandle, IDetailChildrenBuilder& ChildBuilder, IPropertyTypeCustomizationUtils& StructCustomizationUtils)
{
	TSharedRef<IPropertyHandle> PropertyHandle_LayerFilename = StructPropertyHandle->GetChildHandle(GET_MEMBER_NAME_CHECKED(FGizmoImportLayer, LayerFilename)).ToSharedRef();
	ChildBuilder.AddChildProperty(PropertyHandle_LayerFilename)
	.CustomWidget()
	.NameContent()
	[
		PropertyHandle_LayerFilename->CreatePropertyNameWidget()
	]
	.ValueContent()
	.MinDesiredWidth(250.0f)
	.MaxDesiredWidth(0)
	[
		SNew(SHorizontalBox)
		+ SHorizontalBox::Slot()
		[
			PropertyHandle_LayerFilename->CreatePropertyValueWidget()
		]
		+ SHorizontalBox::Slot()
		.AutoWidth()
		//.Padding(0,0,12,0) // Line up with the other properties due to having no reset to default button
		[
			SNew(SButton)
			.ContentPadding(FMargin(4, 0))
			.Text(NSLOCTEXT("UnrealEd", "GenericOpenDialog", "..."))
			.OnClicked_Static(&FLandscapeEditorStructCustomization_FGizmoImportLayer::OnGizmoImportLayerFilenameButtonClicked, PropertyHandle_LayerFilename)
		]
	];

	TSharedRef<IPropertyHandle> PropertyHandle_LayerName = StructPropertyHandle->GetChildHandle(GET_MEMBER_NAME_CHECKED(FGizmoImportLayer, LayerName)).ToSharedRef();
	ChildBuilder.AddChildProperty(PropertyHandle_LayerName);
}

void FSpriteDetailsCustomization::GenerateAdditionalTextureWidget(TSharedRef<IPropertyHandle> PropertyHandle, int32 ArrayIndex, IDetailChildrenBuilder& ChildrenBuilder)
{
	IDetailPropertyRow& TextureRow = ChildrenBuilder.AddChildProperty(PropertyHandle);

	FText ExtraText;
	if (FText* pExtraText = AdditionalTextureLabels.Find(ArrayIndex))
	{
		ExtraText = *pExtraText;
	}

	FNumberFormattingOptions NoCommas;
	NoCommas.UseGrouping = false;
	const FText SlotDesc = FText::Format(LOCTEXT("AdditionalTextureSlotIndex", "Slot #{0}"), FText::AsNumber(ArrayIndex, &NoCommas));

	TextureRow.DisplayName(SlotDesc);

	TextureRow.ShowPropertyButtons(false);

	TextureRow.CustomWidget(false)
		.NameContent()
		[
			CreateTextureNameWidget(PropertyHandle, ExtraText)
		]
		.ValueContent()
		.MaxDesiredWidth(TOptional<float>())
		[
			PropertyHandle->CreatePropertyValueWidget()
		];
}

void FMoviePlayerSettingsDetails::GenerateArrayElementWidget(TSharedRef<IPropertyHandle> PropertyHandle, int32 ArrayIndex, IDetailChildrenBuilder& ChildrenBuilder)
{
	IDetailPropertyRow& FilePathRow = ChildrenBuilder.AddChildProperty( PropertyHandle );
	{
		FilePathRow.CustomWidget(false)
			.NameContent()
			[
				PropertyHandle->CreatePropertyNameWidget()
			]
			.ValueContent()
			.MaxDesiredWidth(0.0f)
			.MinDesiredWidth(125.0f)
			[
				SNew(SFilePathPicker)
					.BrowseButtonImage(FEditorStyle::GetBrush("PropertyWindow.Button_Ellipsis"))
					.BrowseButtonStyle(FEditorStyle::Get(), "HoverHintOnly")
					.BrowseButtonToolTip(LOCTEXT("FileButtonToolTipText", "Choose a file from this computer"))
					.BrowseDirectory(FEditorDirectories::Get().GetLastDirectory(ELastDirectory::GENERIC_OPEN))
					.BrowseTitle(LOCTEXT("PropertyEditorTitle", "File picker..."))
					.FilePath(this, &FMoviePlayerSettingsDetails::HandleFilePathPickerFilePath, PropertyHandle)
					.FileTypeFilter(TEXT("MPEG-4 Movie (*.mp4)|*.mp4"))
					.OnPathPicked(this, &FMoviePlayerSettingsDetails::HandleFilePathPickerPathPicked, PropertyHandle)
			];
	}
};

void FRawDistributionVectorStructCustomization::CustomizeChildren(TSharedRef<IPropertyHandle> StructPropertyHandle, IDetailChildrenBuilder& StructBuilder, IPropertyTypeCustomizationUtils& StructCustomizationUtils)
{
	// Determine from the metadata whether we should treat vectors as FLinearColors or not
	bool bTreatAsColor = StructPropertyHandle->HasMetaData("TreatAsColor");

	uint32 NumChildren;
	ensure(StructPropertyHandle->GetNumChildren(NumChildren) == FPropertyAccess::Success);

	// Now recurse through all children, creating a custom builder for each which will either add the default property row, or
	// a property row exposing a FLinearColor type customization which maps directly to the elements of the original FVector.
	for (uint32 ChildIndex = 0; ChildIndex < NumChildren; ChildIndex++)
	{
		TSharedPtr<IPropertyHandle> ChildHandle = StructPropertyHandle->GetChildHandle(ChildIndex);
		check(ChildHandle.IsValid());
		if (bTreatAsColor)
		{
			TSharedRef<FReplaceVectorWithLinearColorBuilder> CustomBuilder = MakeShareable(new FReplaceVectorWithLinearColorBuilder(ChildHandle.ToSharedRef()));
			StructBuilder.AddChildCustomBuilder(CustomBuilder);
		}
		else
		{
			StructBuilder.AddChildProperty(ChildHandle.ToSharedRef());
		}
	}
}

void FReplaceVectorWithLinearColorBuilder::GeneratePropertyContent(const TSharedRef<IPropertyHandle>& Handle, IDetailChildrenBuilder& ChildrenBuilder)
{
	// Add to the current builder, depending on the property type.
	uint32 NumChildren = 0;
	ensure(Handle->GetNumChildren(NumChildren) == FPropertyAccess::Success);
	bool bHasChildren = (NumChildren > 0);
	bool bIsArray = Handle->AsArray().IsValid();

	if (bIsArray)
	{
		// Arrays need special handling and will create an array builder
		TSharedRef<FDetailArrayBuilder> ArrayBuilder = MakeShareable(new FDetailArrayBuilder(Handle));
		ArrayBuilder->OnGenerateArrayElementWidget(FOnGenerateArrayElementWidget::CreateSP(this, &FReplaceVectorWithLinearColorBuilder::OnGenerateArrayElementWidget));
		ChildrenBuilder.AddChildCustomBuilder(ArrayBuilder);
	}
	else if (bHasChildren)
	{
		// If there are children, we invoke a new instance of our custom builder for recursive handling
		// Note, if this is an FVector, it will be handled specially by the implementation of the IDetailCustomNodeBuilder interface.
		TSharedRef<FReplaceVectorWithLinearColorBuilder> StructBuilder = MakeShareable(new FReplaceVectorWithLinearColorBuilder(Handle));
		ChildrenBuilder.AddChildCustomBuilder(StructBuilder);
	}
	else
	{
		// No children - just add the property.
		ChildrenBuilder.AddChildProperty(Handle);
	}
}

void FDialogueContextMappingNodeBuilder::GenerateChildContent( IDetailChildrenBuilder& ChildrenBuilder )
{
	if( ContextMappingPropertyHandle->IsValidHandle() )
	{
		const TSharedPtr<IPropertyHandle> SoundwavePropertyHandle = ContextMappingPropertyHandle->GetChildHandle("Soundwave");
		ChildrenBuilder.AddChildProperty(SoundwavePropertyHandle.ToSharedRef());
	}
}

void FNiagaraEmitterPropertiesDetails::OnGenerateScalarConstantEntry(TSharedRef<IPropertyHandle> ElementProperty, int32 ElementIndex, IDetailChildrenBuilder& ChildrenBuilder)
{
	TSharedPtr<IPropertyHandle> ValueProperty = ElementProperty->GetChildHandle(GET_MEMBER_NAME_CHECKED(FNiagaraConstants_Float, Value));
	TSharedPtr<IPropertyHandle> NameProperty = ElementProperty->GetChildHandle(GET_MEMBER_NAME_CHECKED(FNiagaraConstants_Float, Name));

	FName DisplayName;
	NameProperty->GetValue(DisplayName);
	//Don't display system constants
	if (UNiagaraComponent::GetSystemConstants().Find(FNiagaraVariableInfo(DisplayName, ENiagaraDataType::Scalar)) == INDEX_NONE)
	{
		ChildrenBuilder.AddChildProperty(ValueProperty.ToSharedRef()).DisplayName(FText::FromName(DisplayName));
	}
}

void FAbcCompressionSettingsCustomization::CustomizeChildren(TSharedRef<IPropertyHandle> StructPropertyHandle, IDetailChildrenBuilder& StructBuilder, IPropertyTypeCustomizationUtils& StructCustomizationUtils)
{
	Settings = UAbcImportSettings::Get();

	uint32 NumChildren;
	StructPropertyHandle->GetNumChildren(NumChildren);

	for (uint32 ChildIndex = 0; ChildIndex < NumChildren; ++ChildIndex)
	{
		TSharedRef<IPropertyHandle> ChildHandle = StructPropertyHandle->GetChildHandle(ChildIndex).ToSharedRef();
		IDetailPropertyRow& Property = StructBuilder.AddChildProperty(ChildHandle);
		static const FName EditConditionName = "EnumCondition";
		int32 EnumCondition = ChildHandle->GetINTMetaData(EditConditionName);
		Property.Visibility(TAttribute<EVisibility>::Create(TAttribute<EVisibility>::FGetter::CreateSP(this, &FAbcCompressionSettingsCustomization::ArePropertiesVisible, EnumCondition)));
	}
}

void FAttributeBasedFloatDetails::CustomizeChildren(TSharedRef<IPropertyHandle> StructPropertyHandle, IDetailChildrenBuilder& StructBuilder, IPropertyTypeCustomizationUtils& StructCustomizationUtils)
{
	uint32 NumChildrenProps = 0;
	StructPropertyHandle->GetNumChildren(NumChildrenProps);

	AttributeCalculationTypePropertyHandle = StructPropertyHandle->GetChildHandle(GET_MEMBER_NAME_CHECKED(FAttributeBasedFloat, AttributeCalculationType));
	const TSharedPtr<IPropertyHandle> FinalChannelHandle = StructPropertyHandle->GetChildHandle(GET_MEMBER_NAME_CHECKED(FAttributeBasedFloat, FinalChannel));
	
	if (ensure(FinalChannelHandle.IsValid()) && ensure(FinalChannelHandle->IsValidHandle()) && ensure(AttributeCalculationTypePropertyHandle.IsValid()) && ensure(AttributeCalculationTypePropertyHandle->IsValidHandle()))
	{
		for (uint32 ChildIdx = 0; ChildIdx < NumChildrenProps; ++ChildIdx)
		{
			TSharedPtr<IPropertyHandle> ChildHandle = StructPropertyHandle->GetChildHandle(ChildIdx);
			if (ChildHandle.IsValid() && ChildHandle->IsValidHandle())
			{
				IDetailPropertyRow& NewPropRow = StructBuilder.AddChildProperty(ChildHandle.ToSharedRef());
				if (ChildHandle->GetProperty() == FinalChannelHandle->GetProperty())
				{
					NewPropRow.Visibility(TAttribute<EVisibility>::Create(TAttribute<EVisibility>::FGetter::CreateSP(this, &FAttributeBasedFloatDetails::GetFinalChannelVisibility)));
				}
			}
		}
	}
}

void FCurveColorCustomization::CustomizeChildren(TSharedRef<IPropertyHandle> InStructPropertyHandle, IDetailChildrenBuilder& StructBuilder, IPropertyTypeCustomizationUtils& StructCustomizationUtils)
{
	uint32 NumChildren = 0;
	StructPropertyHandle->GetNumChildren(NumChildren);

	for( uint32 ChildIndex = 0; ChildIndex < NumChildren; ++ChildIndex )
	{
		TSharedPtr<IPropertyHandle> Child = StructPropertyHandle->GetChildHandle( ChildIndex );

		if( Child->GetProperty()->GetName() == TEXT("ExternalCurve") )
		{
			ExternalCurveHandle = Child;

			FSimpleDelegate OnCurveChangedDelegate = FSimpleDelegate::CreateSP( this, &FCurveColorCustomization::OnExternalCurveChanged, InStructPropertyHandle );
			Child->SetOnPropertyValueChanged(OnCurveChangedDelegate);

			StructBuilder.AddChildContent(LOCTEXT("ExternalCurveLabel", "ExternalCurve"))
				.NameContent()
				[
					Child->CreatePropertyNameWidget()
				]
				.ValueContent()
				[
					SNew(SVerticalBox)
					+SVerticalBox::Slot()
					.AutoHeight()
					[
						SNew(SHorizontalBox)
						+SHorizontalBox::Slot()
						[
							Child->CreatePropertyValueWidget()
						]
						+SHorizontalBox::Slot()
						.AutoWidth()
						.VAlign(VAlign_Center)
						.Padding(1,0)
						[
							SNew(SButton)
							.ButtonStyle( FEditorStyle::Get(), "NoBorder" )
							.ContentPadding(1.f)
							.ToolTipText(LOCTEXT("ConvertInternalCurveTooltip", "Convert to Internal Color Curve"))
							.OnClicked(this, &FCurveColorCustomization::OnConvertButtonClicked)
							.IsEnabled(this, &FCurveColorCustomization::IsConvertButtonEnabled)
							[
								SNew(SImage)
								.Image( FEditorStyle::GetBrush(TEXT("PropertyWindow.Button_Clear")) )
							]
						]
					]
					+SVerticalBox::Slot()
					.AutoHeight()
					[
						SNew(SButton)
						.HAlign(HAlign_Center)
						.Text( LOCTEXT( "CreateAssetButton", "Create External Curve" ) )
						.ToolTipText(LOCTEXT( "CreateAssetTooltip", "Create a new Color Curve asset from this curve") )
						.OnClicked(this, &FCurveColorCustomization::OnCreateButtonClicked)
						.IsEnabled(this, &FCurveColorCustomization::IsCreateButtonEnabled)
					]
				];
		}
		else
		{
			StructBuilder.AddChildProperty(Child.ToSharedRef());
		}
	}
}