vault backup: 2024-10-12 17:19:45

03-UnrealEngine/Gameplay/UObject/UnrealSpecifiers/Meta/AnimationGraph/AnimNotifyExpand.md

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+# AnimNotifyExpand
+
+- **功能描述：** 使得UAnimNotify或UAnimNotifyState下的属性直接展开到细节面板里。
+- **使用位置：** UPROPERTY
+- **引擎模块：** AnimationGraph
+- **元数据类型：** bool
+- **限制类型：** UAnimNotify或UAnimNotifyState子类下的FName属性
+
+使得UAnimNotify或UAnimNotifyState下的属性直接展开到细节面板里。
+
+在源码里也没有找到应用的例子。
+
+## 原理：
+
+看源码，里面写死了只对有限的引擎自带的几个类起效，因此自己的测试代码并不能生效。
+
+这种写法确实不应该这么写死，希望以后改进吧。到时应该就有源码里的例子了。
+
+```cpp
+
+PropertyModule.RegisterCustomClassLayout( "EditorNotifyObject", FOnGetDetailCustomizationInstance::CreateStatic(&FAnimNotifyDetails::MakeInstance));
+
+bool FAnimNotifyDetails::CustomizeProperty(IDetailCategoryBuilder& CategoryBuilder, UObject* Notify, TSharedPtr<IPropertyHandle> Property)
+{
+	if(Notify && Notify->GetClass() && Property->IsValidHandle())
+{
+	FString ClassName = Notify->GetClass()->GetName();
+	FString PropertyName = Property->GetProperty()->GetName();
+	bool bIsBoneName = Property->GetBoolMetaData(TEXT("AnimNotifyBoneName"));
+
+	if(ClassName.Find(TEXT("AnimNotify_PlayParticleEffect")) != INDEX_NONE && PropertyName == TEXT("SocketName"))
+	{
+		AddBoneNameProperty(CategoryBuilder, Notify, Property);
+		return true;
+	}
+	else if(ClassName.Find(TEXT("AnimNotifyState_TimedParticleEffect")) != INDEX_NONE && PropertyName == TEXT("SocketName"))
+	{
+		AddBoneNameProperty(CategoryBuilder, Notify, Property);
+		return true;
+	}
+	else if(ClassName.Find(TEXT("AnimNotify_PlaySound")) != INDEX_NONE && PropertyName == TEXT("AttachName"))
+	{
+		AddBoneNameProperty(CategoryBuilder, Notify, Property);
+		return true;
+	}
+	else if (ClassName.Find(TEXT("_SoundLibrary")) != INDEX_NONE && PropertyName == TEXT("SoundContext"))
+	{
+		CategoryBuilder.AddProperty(Property);
+		FixBoneNamePropertyRecurse(Property);
+		return true;
+	}
+	else if (ClassName.Find(TEXT("AnimNotifyState_Trail")) != INDEX_NONE)
+	{
+		if(PropertyName == TEXT("FirstSocketName") || PropertyName == TEXT("SecondSocketName"))
+		{
+			AddBoneNameProperty(CategoryBuilder, Notify, Property);
+			return true;
+		}
+		else if(PropertyName == TEXT("WidthScaleCurve"))
+		{
+			AddCurveNameProperty(CategoryBuilder, Notify, Property);
+			return true;
+		}
+	}
+	else if (bIsBoneName)
+	{
+		AddBoneNameProperty(CategoryBuilder, Notify, Property);
+		return true;
+	}
+}
+}
+
+```