HideAlphaChannel

功能描述： 使FColor或FLinearColor属性在编辑的时候隐藏Alpha通道。
使用位置： UPROPERTY
引擎模块： Numeric Property
元数据类型： bool
限制类型： FColor , FLinearColor
常用程度： ★★★

使FColor或FLinearColor属性在编辑的时候隐藏Alpha通道。

测试代码：

public:
	UPROPERTY(EditAnywhere, Category = AlphaTest)
	FColor MyColor;

	UPROPERTY(EditAnywhere, Category = AlphaTest, meta = (HideAlphaChannel))
	FColor MyColor_HideAlphaChannel;

	UPROPERTY(EditAnywhere, Category = AlphaTest)
	FLinearColor MyLinearColor;

	UPROPERTY(EditAnywhere, Category = AlphaTest, meta = (HideAlphaChannel))
	FLinearColor MyLinearColor_HideAlphaChannel;

测试结果：

可见带有HideAlphaChannel的属性就没有了Alpha通道。

原理：

void FColorStructCustomization::CustomizeHeader(TSharedRef<class IPropertyHandle> InStructPropertyHandle, class FDetailWidgetRow& InHeaderRow, IPropertyTypeCustomizationUtils& StructCustomizationUtils)
{
	bIgnoreAlpha = TypeSupportsAlpha() == false || StructPropertyHandle->GetProperty()->HasMetaData(TEXT("HideAlphaChannel"));
}

.AlphaDisplayMode(bIgnoreAlpha ? EColorBlockAlphaDisplayMode::Ignore : EColorBlockAlphaDisplayMode::Separate)

1.3 KiB Raw Blame History

HideAlphaChannel

测试代码：

测试结果：

原理：

1.3 KiB

Raw Blame History