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a12d56ff31e5b5c8d1da02650fc088da7efe1570
UnrealEngineUWP/Engine/Source/Editor/AnimGraph/Private/AnimGraphNode_Base.cpp
aurel cordonnier a12d56ff31 Merge from Release-Engine-Staging @ 17791557 to Release-Engine-Test 
This represents UE4/Main @17774255, Release-5.0 @17791557 and Dev-PerfTest @17789485

[CL 17794212 by aurel cordonnier in ue5-release-engine-test branch]
2021-10-12 21:21:22 -04:00

1561 lines
52 KiB
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// Copyright Epic Games, Inc. All Rights Reserved.
#include "AnimGraphNode_Base.h"
#include "Kismet2/BlueprintEditorUtils.h"
#include "Animation/AnimInstance.h"
#include "AnimationGraphSchema.h"
#include "BlueprintNodeSpawner.h"
#include "BlueprintActionDatabaseRegistrar.h"
#include "AnimBlueprintNodeOptionalPinManager.h"
#include "IAnimNodeEditMode.h"
#include "AnimNodeEditModes.h"
#include "AnimationGraph.h"
#include "EditorModeManager.h"
#include "AnimationEditorUtils.h"
#include "UObject/UnrealType.h"
#include "Kismet2/CompilerResultsLog.h"
#include "Subsystems/AssetEditorSubsystem.h"
#include "AnimBlueprintCompiler.h"
#include "AnimBlueprintExtension_Base.h"
#include "AnimBlueprintExtension_Attributes.h"
#include "AnimBlueprintExtension_PropertyAccess.h"
#include "AnimBlueprintExtension_Tag.h"
#include "IAnimBlueprintCompilationContext.h"
#include "AnimBlueprintCompilationContext.h"
#include "AnimBlueprintExtension.h"
#include "FindInBlueprintManager.h"
#include "IPropertyAccessBlueprintBinding.h"
#include "IPropertyAccessEditor.h"
#include "ScopedTransaction.h"
#include "Algo/Accumulate.h"
#include "Fonts/FontMeasure.h"
#include "UObject/ReleaseObjectVersion.h"
#include "Framework/MultiBox/MultiBoxBuilder.h"
#include "Widgets/Layout/SSpacer.h"
#include "Widgets/Layout/SBox.h"
#include "Widgets/SOverlay.h"
#include "Widgets/Text/STextBlock.h"
#include "Fonts/FontMeasure.h"
#define LOCTEXT_NAMESPACE "UAnimGraphNode_Base"
/////////////////////////////////////////////////////
// UAnimGraphNode_Base
UAnimGraphNode_Base::UAnimGraphNode_Base(const FObjectInitializer& ObjectInitializer)
: Super(ObjectInitializer)
{
}
void UAnimGraphNode_Base::ExpandNode(FKismetCompilerContext& CompilerContext, UEdGraph* SourceGraph)
{
TUniquePtr<IAnimBlueprintCompilationContext> CompilationContext = IAnimBlueprintCompilationContext::Get(CompilerContext);
UAnimBlueprintExtension_Base* Extension = UAnimBlueprintExtension_Base::GetExtension<UAnimBlueprintExtension_Base>(GetAnimBlueprint());
Extension->CreateEvaluationHandlerForNode(*CompilationContext.Get(), this);
}
void UAnimGraphNode_Base::PreEditChange(FProperty* PropertyThatWillChange)
{
Super::PreEditChange(PropertyThatWillChange);
if (PropertyThatWillChange && PropertyThatWillChange->GetFName() == GET_MEMBER_NAME_CHECKED(FOptionalPinFromProperty, bShowPin))
{
FOptionalPinManager::CacheShownPins(ShowPinForProperties, OldShownPins);
}
}
void UAnimGraphNode_Base::PostEditUndo()
{
Super::PostEditUndo();
if(HasValidBlueprint())
{
// Node may have been removed or added by undo/redo so make sure extensions are refreshed
GetAnimBlueprint()->RequestRefreshExtensions();
}
}
void UAnimGraphNode_Base::PostEditChangeProperty(FPropertyChangedEvent& PropertyChangedEvent)
{
FName PropertyName = (PropertyChangedEvent.Property != NULL) ? PropertyChangedEvent.Property->GetFName() : NAME_None;
FName MemberPropertyName = (PropertyChangedEvent.MemberProperty != NULL) ? PropertyChangedEvent.MemberProperty->GetFName() : NAME_None;
if (PropertyName == GET_MEMBER_NAME_CHECKED(FOptionalPinFromProperty, bShowPin) && MemberPropertyName == GET_MEMBER_NAME_CHECKED(UAnimGraphNode_Base, ShowPinForProperties))
{
FOptionalPinManager::EvaluateOldShownPins(ShowPinForProperties, OldShownPins, this);
GetSchema()->ReconstructNode(*this);
}
else if(PropertyName == GET_MEMBER_NAME_CHECKED(UAnimGraphNode_Base, InitialUpdateFunction))
{
GetFNode()->InitialUpdateFunction.SetFromFunction(InitialUpdateFunction.ResolveMember<UFunction>(GetBlueprintClassFromNode()));
GetAnimBlueprint()->RequestRefreshExtensions();
GetSchema()->ReconstructNode(*this);
}
else if(PropertyName == GET_MEMBER_NAME_CHECKED(UAnimGraphNode_Base, BecomeRelevantFunction))
{
GetFNode()->BecomeRelevantFunction.SetFromFunction(BecomeRelevantFunction.ResolveMember<UFunction>(GetBlueprintClassFromNode()));
GetAnimBlueprint()->RequestRefreshExtensions();
GetSchema()->ReconstructNode(*this);
}
else if(PropertyName == GET_MEMBER_NAME_CHECKED(UAnimGraphNode_Base, UpdateFunction))
{
GetFNode()->UpdateFunction.SetFromFunction(UpdateFunction.ResolveMember<UFunction>(GetBlueprintClassFromNode()));
GetSchema()->ReconstructNode(*this);
}
else if(PropertyName == GET_MEMBER_NAME_CHECKED(UAnimGraphNode_Base, Tag))
{
GetAnimBlueprint()->RequestRefreshExtensions();
FBlueprintEditorUtils::MarkBlueprintAsStructurallyModified(GetAnimBlueprint());
}
Super::PostEditChangeProperty(PropertyChangedEvent);
PropertyChangeEvent.Broadcast(PropertyChangedEvent);
}
void UAnimGraphNode_Base::SetPinVisibility(bool bInVisible, int32 InOptionalPinIndex)
{
if(ShowPinForProperties[InOptionalPinIndex].bShowPin != bInVisible)
{
FOptionalPinManager::CacheShownPins(ShowPinForProperties, OldShownPins);
ShowPinForProperties[InOptionalPinIndex].bShowPin = bInVisible;
FOptionalPinManager::EvaluateOldShownPins(ShowPinForProperties, OldShownPins, this);
ReconstructNode();
}
}
void UAnimGraphNode_Base::Serialize(FArchive& Ar)
{
Super::Serialize(Ar);
Ar.UsingCustomVersion(FReleaseObjectVersion::GUID);
if (Ar.IsLoading())
{
if (Ar.CustomVer(FReleaseObjectVersion::GUID) < FReleaseObjectVersion::AnimationGraphNodeBindingsDisplayedAsPins)
{
// Push any bindings to optional pins
bool bPushedBinding = false;
for(const TPair<FName, FAnimGraphNodePropertyBinding>& BindingPair : PropertyBindings)
{
for(FOptionalPinFromProperty& OptionalPin : ShowPinForProperties)
{
if(OptionalPin.bCanToggleVisibility && !OptionalPin.bShowPin && OptionalPin.PropertyName == BindingPair.Key)
{
OptionalPin.bShowPin = true;
bPushedBinding = true;
}
}
}
if(bPushedBinding)
{
FOptionalPinManager::EvaluateOldShownPins(ShowPinForProperties, OldShownPins, this);
}
}
}
}
void UAnimGraphNode_Base::PostPlacedNewNode()
{
Super::PostPlacedNewNode();
// This makes sure that all anim BP extensions are registered that this node needs
UAnimBlueprintExtension::RequestExtensionsForNode(this);
}
void UAnimGraphNode_Base::DestroyNode()
{
// This node may have been the last using its extension, so refresh
GetAnimBlueprint()->RequestRefreshExtensions();
Super::DestroyNode();
}
void UAnimGraphNode_Base::CreateOutputPins()
{
if (!IsSinkNode())
{
CreatePin(EGPD_Output, UAnimationGraphSchema::PC_Struct, FPoseLink::StaticStruct(), TEXT("Pose"));
}
}
void UAnimGraphNode_Base::ValidateAnimNodeDuringCompilation(USkeleton* ForSkeleton, FCompilerResultsLog& MessageLog)
{
// Validate any bone references we have
for(const TPair<FStructProperty*, const void*>& PropertyValuePair : TPropertyValueRange<FStructProperty>(GetClass(), this))
{
if(PropertyValuePair.Key->Struct == FBoneReference::StaticStruct())
{
const FBoneReference& BoneReference = *(const FBoneReference*)PropertyValuePair.Value;
// Temporary fix where skeleton is not fully loaded during AnimBP compilation and thus virtual bone name check is invalid UE-39499 (NEED FIX)
if (ForSkeleton && !ForSkeleton->HasAnyFlags(RF_NeedPostLoad))
{
if (BoneReference.BoneName != NAME_None)
{
if (ForSkeleton->GetReferenceSkeleton().FindBoneIndex(BoneReference.BoneName) == INDEX_NONE)
{
FFormatNamedArguments Args;
Args.Add(TEXT("BoneName"), FText::FromName(BoneReference.BoneName));
MessageLog.Warning(*FText::Format(LOCTEXT("NoBoneFoundToModify", "@@ - Bone {BoneName} not found in Skeleton"), Args).ToString(), this);
}
}
}
}
}
auto ValidateFunctionRef = [this, &MessageLog](const FMemberReference& InRef, const FText& InFunctionName)
{
if(InRef.GetMemberName() != NAME_None)
{
UFunction* Function = InRef.ResolveMember<UFunction>(GetAnimBlueprint()->SkeletonGeneratedClass);
if(Function == nullptr)
{
MessageLog.Error(*FText::Format(LOCTEXT("CouldNotResolveFunctionErrorFormat", "Could not resolve {0} function @@"), InFunctionName).ToString(), this);
}
else
{
if(!FBlueprintEditorUtils::HasFunctionBlueprintThreadSafeMetaData(Function))
{
MessageLog.Error(*FText::Format(LOCTEXT("FunctionThreadSafetyErrorFormat", "{0} function is not thread safe @@"), InFunctionName).ToString(), this);
}
}
}
};
ValidateFunctionRef(InitialUpdateFunction, LOCTEXT("InitialUpdateFunctionName", "Initial Update"));
ValidateFunctionRef(BecomeRelevantFunction, LOCTEXT("BecomeRelevantFunctionName", "Become Relevant"));
ValidateFunctionRef(UpdateFunction, LOCTEXT("UpdateFunctionName", "Update"));
}
void UAnimGraphNode_Base::CopyTermDefaultsToDefaultObject(IAnimBlueprintCopyTermDefaultsContext& InCompilationContext, IAnimBlueprintNodeCopyTermDefaultsContext& InPerNodeContext, IAnimBlueprintGeneratedClassCompiledData& OutCompiledData)
{
InPerNodeContext.GetTargetProperty()->CopyCompleteValue(InPerNodeContext.GetDestinationPtr(), InPerNodeContext.GetSourcePtr());
OnCopyTermDefaultsToDefaultObject(InCompilationContext, InPerNodeContext, OutCompiledData);
}
void UAnimGraphNode_Base::OverrideAssets(IAnimBlueprintNodeOverrideAssetsContext& InContext) const
{
if(InContext.GetAssets().Num() > 0)
{
if(UAnimationAsset* AnimationAsset = Cast<UAnimationAsset>(InContext.GetAssets()[0]))
{
// Call the legacy implementation
PRAGMA_DISABLE_DEPRECATION_WARNINGS
InContext.GetAnimNode<FAnimNode_Base>().OverrideAsset(AnimationAsset);
PRAGMA_ENABLE_DEPRECATION_WARNINGS
}
}
OnOverrideAssets(InContext);
}
void UAnimGraphNode_Base::InternalPinCreation(TArray<UEdGraphPin*>* OldPins)
{
// preload required assets first before creating pins
PreloadRequiredAssets();
const UAnimationGraphSchema* Schema = GetDefault<UAnimationGraphSchema>();
if (const FStructProperty* NodeStruct = GetFNodeProperty())
{
// Display any currently visible optional pins
{
UObject* NodeDefaults = GetArchetype();
FAnimBlueprintNodeOptionalPinManager OptionalPinManager(this, OldPins);
OptionalPinManager.AllocateDefaultPins(NodeStruct->Struct, NodeStruct->ContainerPtrToValuePtr<uint8>(this), NodeDefaults ? NodeStruct->ContainerPtrToValuePtr<uint8>(NodeDefaults) : nullptr);
}
// Create the output pin, if needed
CreateOutputPins();
}
}
void UAnimGraphNode_Base::AllocateDefaultPins()
{
InternalPinCreation(NULL);
}
void UAnimGraphNode_Base::ReallocatePinsDuringReconstruction(TArray<UEdGraphPin*>& OldPins)
{
InternalPinCreation(&OldPins);
CreateCustomPins(&OldPins);
RestoreSplitPins(OldPins);
}
bool UAnimGraphNode_Base::CanJumpToDefinition() const
{
return GetJumpTargetForDoubleClick() != nullptr;
}
void UAnimGraphNode_Base::JumpToDefinition() const
{
if (UObject* HyperlinkTarget = GetJumpTargetForDoubleClick())
{
GEditor->GetEditorSubsystem<UAssetEditorSubsystem>()->OpenEditorForAsset(HyperlinkTarget);
}
}
FLinearColor UAnimGraphNode_Base::GetNodeTitleColor() const
{
return FLinearColor::Black;
}
UScriptStruct* UAnimGraphNode_Base::GetFNodeType() const
{
UScriptStruct* BaseFStruct = FAnimNode_Base::StaticStruct();
for (TFieldIterator<FProperty> PropIt(GetClass(), EFieldIteratorFlags::IncludeSuper); PropIt; ++PropIt)
{
if (FStructProperty* StructProp = CastField<FStructProperty>(*PropIt))
{
if (StructProp->Struct->IsChildOf(BaseFStruct))
{
return StructProp->Struct;
}
}
}
return NULL;
}
FStructProperty* UAnimGraphNode_Base::GetFNodeProperty() const
{
UScriptStruct* BaseFStruct = FAnimNode_Base::StaticStruct();
for (TFieldIterator<FProperty> PropIt(GetClass(), EFieldIteratorFlags::IncludeSuper); PropIt; ++PropIt)
{
if (FStructProperty* StructProp = CastField<FStructProperty>(*PropIt))
{
if (StructProp->Struct->IsChildOf(BaseFStruct))
{
return StructProp;
}
}
}
return NULL;
}
FAnimNode_Base* UAnimGraphNode_Base::GetFNode()
{
if(FStructProperty* Property = GetFNodeProperty())
{
return Property->ContainerPtrToValuePtr<FAnimNode_Base>(this);
}
return nullptr;
}
FString UAnimGraphNode_Base::GetNodeCategory() const
{
return TEXT("Misc.");
}
void UAnimGraphNode_Base::GetNodeAttributes( TArray<TKeyValuePair<FString, FString>>& OutNodeAttributes ) const
{
OutNodeAttributes.Add( TKeyValuePair<FString, FString>( TEXT( "Type" ), TEXT( "AnimGraphNode" ) ));
OutNodeAttributes.Add( TKeyValuePair<FString, FString>( TEXT( "Class" ), GetClass()->GetName() ));
OutNodeAttributes.Add( TKeyValuePair<FString, FString>( TEXT( "Name" ), GetName() ));
}
void UAnimGraphNode_Base::GetMenuActions(FBlueprintActionDatabaseRegistrar& ActionRegistrar) const
{
// actions get registered under specific object-keys; the idea is that
// actions might have to be updated (or deleted) if their object-key is
// mutated (or removed)... here we use the node's class (so if the node
// type disappears, then the action should go with it)
UClass* ActionKey = GetClass();
// to keep from needlessly instantiating a UBlueprintNodeSpawner, first
// check to make sure that the registrar is looking for actions of this type
// (could be regenerating actions for a specific asset, and therefore the
// registrar would only accept actions corresponding to that asset)
if (ActionRegistrar.IsOpenForRegistration(ActionKey))
{
UBlueprintNodeSpawner* NodeSpawner = UBlueprintNodeSpawner::Create(GetClass());
check(NodeSpawner != nullptr);
ActionRegistrar.AddBlueprintAction(ActionKey, NodeSpawner);
}
}
FText UAnimGraphNode_Base::GetMenuCategory() const
{
return FText::FromString(GetNodeCategory());
}
void UAnimGraphNode_Base::GetPinAssociatedProperty(const UScriptStruct* NodeType, const UEdGraphPin* InputPin, FProperty*& OutProperty, int32& OutIndex) const
{
OutProperty = nullptr;
OutIndex = INDEX_NONE;
//@TODO: Name-based hackery, avoid the roundtrip and better indicate when it's an array pose pin
const FString PinNameStr = InputPin->PinName.ToString();
const int32 UnderscoreIndex = PinNameStr.Find(TEXT("_"), ESearchCase::CaseSensitive);
if (UnderscoreIndex != INDEX_NONE)
{
const FString ArrayName = PinNameStr.Left(UnderscoreIndex);
if (FArrayProperty* ArrayProperty = FindFProperty<FArrayProperty>(NodeType, *ArrayName))
{
const int32 ArrayIndex = FCString::Atoi(*(PinNameStr.Mid(UnderscoreIndex + 1)));
OutProperty = ArrayProperty;
OutIndex = ArrayIndex;
}
}
// If the array check failed or we have no underscores
if(OutProperty == nullptr)
{
if (FProperty* Property = FindFProperty<FProperty>(NodeType, InputPin->PinName))
{
OutProperty = Property;
OutIndex = INDEX_NONE;
}
}
}
FPoseLinkMappingRecord UAnimGraphNode_Base::GetLinkIDLocation(const UScriptStruct* NodeType, UEdGraphPin* SourcePin)
{
if (SourcePin->LinkedTo.Num() > 0)
{
if (UAnimGraphNode_Base* LinkedNode = Cast<UAnimGraphNode_Base>(FBlueprintEditorUtils::FindFirstCompilerRelevantNode(SourcePin->LinkedTo[0])))
{
//@TODO: Name-based hackery, avoid the roundtrip and better indicate when it's an array pose pin
const FString SourcePinName = SourcePin->PinName.ToString();
const int32 UnderscoreIndex = SourcePinName.Find(TEXT("_"), ESearchCase::CaseSensitive);
if (UnderscoreIndex != INDEX_NONE)
{
const FString ArrayName = SourcePinName.Left(UnderscoreIndex);
if (FArrayProperty* ArrayProperty = FindFProperty<FArrayProperty>(NodeType, *ArrayName))
{
if (FStructProperty* Property = CastField<FStructProperty>(ArrayProperty->Inner))
{
if (Property->Struct->IsChildOf(FPoseLinkBase::StaticStruct()))
{
const int32 ArrayIndex = FCString::Atoi(*(SourcePinName.Mid(UnderscoreIndex + 1)));
return FPoseLinkMappingRecord::MakeFromArrayEntry(this, LinkedNode, ArrayProperty, ArrayIndex);
}
}
}
}
else
{
if (FStructProperty* Property = FindFProperty<FStructProperty>(NodeType, SourcePin->PinName))
{
if (Property->Struct->IsChildOf(FPoseLinkBase::StaticStruct()))
{
return FPoseLinkMappingRecord::MakeFromMember(this, LinkedNode, Property);
}
}
}
}
}
return FPoseLinkMappingRecord::MakeInvalid();
}
void UAnimGraphNode_Base::CreatePinsForPoseLink(FProperty* PoseProperty, int32 ArrayIndex)
{
UScriptStruct* A2PoseStruct = FA2Pose::StaticStruct();
// pose input
const FName NewPinName = (ArrayIndex == INDEX_NONE) ? PoseProperty->GetFName() : *FString::Printf(TEXT("%s_%d"), *(PoseProperty->GetName()), ArrayIndex);
CreatePin(EGPD_Input, UAnimationGraphSchema::PC_Struct, A2PoseStruct, NewPinName);
}
void UAnimGraphNode_Base::PostProcessPinName(const UEdGraphPin* Pin, FString& DisplayName) const
{
if (Pin->Direction == EGPD_Output)
{
if (Pin->PinName == TEXT("Pose"))
{
DisplayName.Reset();
}
}
}
bool UAnimGraphNode_Base::CanCreateUnderSpecifiedSchema(const UEdGraphSchema* DesiredSchema) const
{
return DesiredSchema->GetClass()->IsChildOf(UAnimationGraphSchema::StaticClass());
}
FString UAnimGraphNode_Base::GetDocumentationLink() const
{
return TEXT("Shared/GraphNodes/Animation");
}
void UAnimGraphNode_Base::GetPinHoverText(const UEdGraphPin& Pin, FString& HoverTextOut) const
{
if (UAnimationGraphSchema::IsLocalSpacePosePin(Pin.PinType))
{
HoverTextOut = TEXT("Animation Pose");
}
else if (UAnimationGraphSchema::IsComponentSpacePosePin(Pin.PinType))
{
HoverTextOut = TEXT("Animation Pose (Component Space)");
}
else
{
Super::GetPinHoverText(Pin, HoverTextOut);
}
}
void UAnimGraphNode_Base::ProcessDuringCompilation(IAnimBlueprintCompilationContext& InCompilationContext, IAnimBlueprintGeneratedClassCompiledData& OutCompiledData)
{
UAnimBlueprintExtension_Base* Extension = UAnimBlueprintExtension::GetExtension<UAnimBlueprintExtension_Base>(GetAnimBlueprint());
// Record pose pins for later patchup and gather pins that have an associated evaluation handler
Extension->ProcessNodePins(this, InCompilationContext, OutCompiledData);
// Resolve functions
GetFNode()->InitialUpdateFunction.SetFromFunction(InitialUpdateFunction.ResolveMember<UFunction>(GetBlueprintClassFromNode()));
GetFNode()->BecomeRelevantFunction.SetFromFunction(BecomeRelevantFunction.ResolveMember<UFunction>(GetBlueprintClassFromNode()));
GetFNode()->UpdateFunction.SetFromFunction(UpdateFunction.ResolveMember<UFunction>(GetBlueprintClassFromNode()));
// Insert tag, if any
if(Tag != NAME_None)
{
UAnimBlueprintExtension_Tag* TagExtension = UAnimBlueprintExtension::GetExtension<UAnimBlueprintExtension_Tag>(GetAnimBlueprint());
TagExtension->AddTaggedNode(this, InCompilationContext);
}
// Call the override point
OnProcessDuringCompilation(InCompilationContext, OutCompiledData);
}
void UAnimGraphNode_Base::HandleAnimReferenceCollection(UAnimationAsset* AnimAsset, TArray<UAnimationAsset*>& AnimationAssets) const
{
if(AnimAsset)
{
AnimAsset->HandleAnimReferenceCollection(AnimationAssets, true);
}
}
void UAnimGraphNode_Base::OnNodeSelected(bool bInIsSelected, FEditorModeTools& InModeTools, FAnimNode_Base* InRuntimeNode)
{
const FEditorModeID ModeID = GetEditorMode();
if (ModeID != NAME_None)
{
if (bInIsSelected)
{
InModeTools.ActivateMode(ModeID);
if (FEdMode* EdMode = InModeTools.GetActiveMode(ModeID))
{
static_cast<IAnimNodeEditMode*>(EdMode)->EnterMode(this, InRuntimeNode);
}
}
else
{
if (FEdMode* EdMode = InModeTools.GetActiveMode(ModeID))
{
static_cast<IAnimNodeEditMode*>(EdMode)->ExitMode();
}
InModeTools.DeactivateMode(ModeID);
}
}
}
FEditorModeID UAnimGraphNode_Base::GetEditorMode() const
{
return AnimNodeEditModes::AnimNode;
}
FAnimNode_Base* UAnimGraphNode_Base::FindDebugAnimNode(USkeletalMeshComponent* InPreviewSkelMeshComp) const
{
FAnimNode_Base* DebugNode = nullptr;
if (InPreviewSkelMeshComp != nullptr)
{
auto FindDebugNode = [this](UAnimInstance* InAnimInstance) -> FAnimNode_Base*
{
if (!InAnimInstance)
{
return nullptr;
}
UAnimBlueprintGeneratedClass* AnimBlueprintClass = Cast<UAnimBlueprintGeneratedClass>(InAnimInstance->GetClass());
if (!AnimBlueprintClass)
{
return nullptr;
}
FAnimBlueprintDebugData& DebugData = AnimBlueprintClass->GetAnimBlueprintDebugData();
int32* IndexPtr = DebugData.NodePropertyToIndexMap.Find(this);
if (!IndexPtr)
{
return nullptr;
}
int32 AnimNodeIndex = *IndexPtr;
// reverse node index temporarily because of a bug in NodeGuidToIndexMap
AnimNodeIndex = AnimBlueprintClass->GetAnimNodeProperties().Num() - AnimNodeIndex - 1;
return AnimBlueprintClass->GetAnimNodeProperties()[AnimNodeIndex]->ContainerPtrToValuePtr<FAnimNode_Base>(InAnimInstance);
};
// Try to find this node on the anim BP.
DebugNode = FindDebugNode(InPreviewSkelMeshComp->GetAnimInstance());
// Failing that, try the post-process BP instead.
if (!DebugNode)
{
DebugNode = FindDebugNode(InPreviewSkelMeshComp->GetPostProcessInstance());
}
}
return DebugNode;
}
EAnimAssetHandlerType UAnimGraphNode_Base::SupportsAssetClass(const UClass* AssetClass) const
{
return EAnimAssetHandlerType::NotSupported;
}
void UAnimGraphNode_Base::PinDefaultValueChanged(UEdGraphPin* Pin)
{
Super::PinDefaultValueChanged(Pin);
CopyPinDefaultsToNodeData(Pin);
if(UAnimationGraph* AnimationGraph = Cast<UAnimationGraph>(GetGraph()))
{
AnimationGraph->OnPinDefaultValueChanged.Broadcast(Pin);
}
}
FString UAnimGraphNode_Base::GetPinMetaData(FName InPinName, FName InKey)
{
FString MetaData = Super::GetPinMetaData(InPinName, InKey);
if(MetaData.IsEmpty())
{
// Check properties of our anim node
if(FStructProperty* NodeStructProperty = GetFNodeProperty())
{
for (TFieldIterator<FProperty> It(NodeStructProperty->Struct); It; ++It)
{
const FProperty* Property = *It;
if (Property && Property->GetFName() == InPinName)
{
return Property->GetMetaData(InKey);
}
}
}
}
return MetaData;
}
void UAnimGraphNode_Base::AddSearchMetaDataInfo(TArray<struct FSearchTagDataPair>& OutTaggedMetaData) const
{
Super::AddSearchMetaDataInfo(OutTaggedMetaData);
for(const TPair<FName, FAnimGraphNodePropertyBinding>& BindingPair : PropertyBindings)
{
OutTaggedMetaData.Add(FSearchTagDataPair(FFindInBlueprintSearchTags::FiB_Name, FText::FromName(BindingPair.Key)));
OutTaggedMetaData.Add(FSearchTagDataPair(LOCTEXT("Binding", "Binding"), BindingPair.Value.PathAsText));
}
if(Tag != NAME_None)
{
OutTaggedMetaData.Add(FSearchTagDataPair(LOCTEXT("Tag", "Tag"), FText::FromName(Tag)));
}
}
bool UAnimGraphNode_Base::IsPinExposedAndLinked(const FString& InPinName, const EEdGraphPinDirection InDirection) const
{
UEdGraphPin* Pin = FindPin(InPinName, InDirection);
return Pin != nullptr && Pin->LinkedTo.Num() > 0 && Pin->LinkedTo[0] != nullptr;
}
bool UAnimGraphNode_Base::IsPinExposedAndBound(const FString& InPinName, const EEdGraphPinDirection InDirection) const
{
UEdGraphPin* Pin = FindPin(InPinName, InDirection);
return Pin != nullptr && Pin->LinkedTo.Num() == 0 && PropertyBindings.Find(Pin->GetFName()) != nullptr;
}
bool UAnimGraphNode_Base::IsPinBindable(const UEdGraphPin* InPin) const
{
if(const FProperty* PinProperty = GetPinProperty(InPin->GetFName()))
{
const int32 OptionalPinIndex = ShowPinForProperties.IndexOfByPredicate([PinProperty](const FOptionalPinFromProperty& InOptionalPin)
{
return PinProperty->GetFName() == InOptionalPin.PropertyName;
});
return OptionalPinIndex != INDEX_NONE;
}
return false;
}
bool UAnimGraphNode_Base::GetPinBindingInfo(FName InPinName, FName& OutBindingName, FProperty*& OutPinProperty, int32& OutOptionalPinIndex) const
{
OutPinProperty = GetPinProperty(InPinName);
if(OutPinProperty)
{
OutOptionalPinIndex = ShowPinForProperties.IndexOfByPredicate([OutPinProperty](const FOptionalPinFromProperty& InOptionalPin)
{
return OutPinProperty->GetFName() == InOptionalPin.PropertyName;
});
OutBindingName = InPinName;
return OutOptionalPinIndex != INDEX_NONE;
}
return false;
}
bool UAnimGraphNode_Base::HasBinding(FName InBindingName) const
{
// Comparison without name index to deal with arrays
const FName ComparisonName = FName(InBindingName, 0);
for(const TPair<FName, FAnimGraphNodePropertyBinding>& BindingPair : PropertyBindings)
{
if(ComparisonName == FName(BindingPair.Key, 0))
{
return true;
}
}
return false;
}
void UAnimGraphNode_Base::SetTag(FName InTag)
{
FName OldTag = Tag;
Tag = InTag;
if(Tag != OldTag)
{
GetAnimBlueprint()->RequestRefreshExtensions();
FBlueprintEditorUtils::MarkBlueprintAsStructurallyModified(GetAnimBlueprint());
}
}
FProperty* UAnimGraphNode_Base::GetPinProperty(const UEdGraphPin* InPin) const
{
return GetPinProperty(InPin->GetFName());
}
FProperty* UAnimGraphNode_Base::GetPinProperty(FName InPinName) const
{
// Compare FName without number to make sure we catch array properties that are split into multiple pins
FName ComparisonName = InPinName;
ComparisonName.SetNumber(0);
return GetFNodeType()->FindPropertyByName(ComparisonName);
}
void UAnimGraphNode_Base::PinConnectionListChanged(UEdGraphPin* Pin)
{
if(Pin->LinkedTo.Num() > 0)
{
// If we have links, clear any bindings
// Compare FName without number to make sure we catch array properties that are split into multiple pins
FName ComparisonName = Pin->GetFName();
ComparisonName.SetNumber(0);
for(auto Iter = PropertyBindings.CreateIterator(); Iter; ++Iter)
{
if(ComparisonName == FName(Iter.Key(), 0))
{
Iter.RemoveCurrent();
}
}
}
}
void UAnimGraphNode_Base::AutowireNewNode(UEdGraphPin* FromPin)
{
// Ensure the pin is valid, a pose pin, and has a single link
if (FromPin && UAnimationGraphSchema::IsPosePin(FromPin->PinType))
{
auto FindFirstPosePinInDirection = [this](EEdGraphPinDirection Direction) -> UEdGraphPin*
{
UEdGraphPin** PinToConnectTo = Pins.FindByPredicate([Direction](UEdGraphPin* Pin) -> bool
{
return Pin && Pin->Direction == Direction && UAnimationGraphSchema::IsPosePin(Pin->PinType);
});
return PinToConnectTo ? *PinToConnectTo : nullptr;
};
// Get the linked pin, if valid, and ensure it iss also a pose pin
UEdGraphPin* LinkedPin = FromPin->LinkedTo.Num() == 1 ? FromPin->LinkedTo[0] : nullptr;
if (LinkedPin && UAnimationGraphSchema::IsPosePin(LinkedPin->PinType))
{
// Retrieve the first pin, of similar direction, from this node
UEdGraphPin* PinToConnectTo = FindFirstPosePinInDirection(FromPin->Direction);
if (PinToConnectTo)
{
ensure(GetSchema()->TryCreateConnection(LinkedPin, PinToConnectTo));
}
}
// Link this node to the FromPin, so find the first pose pin of opposite direction on this node
UEdGraphPin* PinToConnectTo = FindFirstPosePinInDirection(FromPin->Direction == EEdGraphPinDirection::EGPD_Input ? EEdGraphPinDirection::EGPD_Output : EEdGraphPinDirection::EGPD_Input);
if (PinToConnectTo)
{
ensure(GetSchema()->TryCreateConnection(FromPin, PinToConnectTo));
}
}
}
TSharedRef<SWidget> UAnimGraphNode_Base::MakePropertyBindingWidget(const FAnimPropertyBindingWidgetArgs& InArgs)
{
UAnimGraphNode_Base* FirstAnimGraphNode = InArgs.Nodes[0];
UBlueprint* Blueprint = FirstAnimGraphNode->GetAnimBlueprint();
const bool bMultiSelect = InArgs.Nodes.Num() > 1;
if(IModularFeatures::Get().IsModularFeatureAvailable("PropertyAccessEditor"))
{
int32 PinArrayIndex = InArgs.PinName.GetNumber() - 1;
const bool bIsArrayOrArrayElement = InArgs.PinProperty->IsA<FArrayProperty>();
const bool bIsArrayElement = bIsArrayOrArrayElement && PinArrayIndex != INDEX_NONE && InArgs.bPropertyIsOnFNode;
const bool bIsArray = bIsArrayOrArrayElement && PinArrayIndex == INDEX_NONE && InArgs.bPropertyIsOnFNode;
FProperty* PropertyToBindTo = bIsArrayElement ? CastField<FArrayProperty>(InArgs.PinProperty)->Inner : InArgs.PinProperty;
// Properties could potentially be removed underneath this widget, so keep a TFieldPath reference to them
TFieldPath<FProperty> BindingPropertyPath(PropertyToBindTo);
TFieldPath<FProperty> PinPropertyPath(InArgs.PinProperty);
auto OnCanBindProperty = [BindingPropertyPath](FProperty* InProperty)
{
// Note: We support type promotion here
IPropertyAccessEditor& PropertyAccessEditor = IModularFeatures::Get().GetModularFeature<IPropertyAccessEditor>("PropertyAccessEditor");
FProperty* BindingProperty = BindingPropertyPath.Get();
return BindingProperty && PropertyAccessEditor.GetPropertyCompatibility(InProperty, BindingProperty) != EPropertyAccessCompatibility::Incompatible;
};
auto OnCanBindFunction = [BindingPropertyPath](UFunction* InFunction)
{
IPropertyAccessEditor& PropertyAccessEditor = IModularFeatures::Get().GetModularFeature<IPropertyAccessEditor>("PropertyAccessEditor");
FProperty* BindingProperty = BindingPropertyPath.Get();
// Note: We support type promotion here
return InFunction->NumParms == 1
&& BindingProperty != nullptr && PropertyAccessEditor.GetPropertyCompatibility(InFunction->GetReturnProperty(), BindingProperty) != EPropertyAccessCompatibility::Incompatible
&& InFunction->HasAnyFunctionFlags(FUNC_BlueprintPure);
};
auto OnAddBinding = [InArgs, Blueprint, BindingPropertyPath, PinPropertyPath, bIsArrayElement, bIsArray](FName InPropertyName, const TArray<FBindingChainElement>& InBindingChain)
{
const UEdGraphSchema_K2* Schema = GetDefault<UEdGraphSchema_K2>();
IPropertyAccessEditor& PropertyAccessEditor = IModularFeatures::Get().GetModularFeature<IPropertyAccessEditor>("PropertyAccessEditor");
for(UAnimGraphNode_Base* AnimGraphNode : InArgs.Nodes)
{
AnimGraphNode->Modify();
// Reset to default so that references are not preserved
FProperty* BindingProperty = BindingPropertyPath.Get();
if(BindingProperty && BindingProperty->GetOwner<UStruct>() && AnimGraphNode->GetFNodeType()->IsChildOf(BindingProperty->GetOwner<UStruct>()) && BindingProperty->IsA<FObjectPropertyBase>())
{
void* PropertyAddress = BindingProperty->ContainerPtrToValuePtr<void>(AnimGraphNode->GetFNode());
BindingProperty->InitializeValue(PropertyAddress);
}
// Pins are exposed if we have a binding or not - and after running this we do.
InArgs.OnSetPinVisibility.ExecuteIfBound(AnimGraphNode, true, InArgs.OptionalPinIndex);
// Need to break all pin links now we have a binding
if(UEdGraphPin* Pin = AnimGraphNode->FindPin(InArgs.PinName))
{
Pin->BreakAllPinLinks();
}
if(bIsArray)
{
// Remove bindings for array elements if this is an array
FName ComparisonName(InArgs.BindingName, 0);
for(auto Iter = AnimGraphNode->PropertyBindings.CreateIterator(); Iter; ++Iter)
{
if(ComparisonName == FName(Iter.Key(), 0))
{
Iter.RemoveCurrent();
}
}
}
else if(bIsArrayElement)
{
// If we are an array element, remove only whole-array bindings
FName ComparisonName(InArgs.BindingName, 0);
for(auto Iter = AnimGraphNode->PropertyBindings.CreateIterator(); Iter; ++Iter)
{
if(ComparisonName == Iter.Key())
{
Iter.RemoveCurrent();
}
}
}
const FFieldVariant& LeafField = InBindingChain.Last().Field;
FProperty* PinProperty = PinPropertyPath.Get();
if(PinProperty && BindingProperty)
{
FAnimGraphNodePropertyBinding Binding;
Binding.PropertyName = InArgs.BindingName;
if(bIsArrayElement)
{
// Pull array index from the pin's FName if this is an array property
Binding.ArrayIndex = InArgs.PinName.GetNumber() - 1;
}
PropertyAccessEditor.MakeStringPath(InBindingChain, Binding.PropertyPath);
Binding.PathAsText = PropertyAccessEditor.MakeTextPath(Binding.PropertyPath);
Binding.Type = LeafField.IsA<UFunction>() ? EAnimGraphNodePropertyBindingType::Function : EAnimGraphNodePropertyBindingType::Property;
Binding.bIsBound = true;
if(LeafField.IsA<FProperty>())
{
const FProperty* LeafProperty = LeafField.Get<FProperty>();
if(LeafProperty)
{
if(PropertyAccessEditor.GetPropertyCompatibility(LeafProperty, BindingProperty) == EPropertyAccessCompatibility::Promotable)
{
Binding.bIsPromotion = true;
Schema->ConvertPropertyToPinType(LeafProperty, Binding.PromotedPinType);
}
Schema->ConvertPropertyToPinType(LeafProperty, Binding.PinType);
}
}
else if(LeafField.IsA<UFunction>())
{
const UFunction* LeafFunction = LeafField.Get<UFunction>();
if(LeafFunction)
{
if(FProperty* ReturnProperty = LeafFunction->GetReturnProperty())
{
if(PropertyAccessEditor.GetPropertyCompatibility(ReturnProperty, BindingProperty) == EPropertyAccessCompatibility::Promotable)
{
Binding.bIsPromotion = true;
Schema->ConvertPropertyToPinType(ReturnProperty, Binding.PromotedPinType);
}
Schema->ConvertPropertyToPinType(ReturnProperty, Binding.PinType);
}
}
}
AnimGraphNode->PropertyBindings.Add(InArgs.BindingName, Binding);
}
}
FBlueprintEditorUtils::MarkBlueprintAsModified(Blueprint);
};
auto OnRemoveBinding = [InArgs, Blueprint](FName InPropertyName)
{
for(UAnimGraphNode_Base* AnimGraphNode : InArgs.Nodes)
{
AnimGraphNode->Modify();
AnimGraphNode->PropertyBindings.Remove(InArgs.BindingName);
}
FBlueprintEditorUtils::MarkBlueprintAsModified(Blueprint);
};
auto CanRemoveBinding = [InArgs](FName InPropertyName)
{
for(UAnimGraphNode_Base* AnimGraphNode : InArgs.Nodes)
{
if(AnimGraphNode->PropertyBindings.Contains(InArgs.BindingName))
{
return true;
}
}
return false;
};
enum class ECurrentValueType : int32
{
None,
Pin,
Binding,
Dynamic,
MultipleValues,
};
auto CurrentBindingText = [InArgs]()
{
ECurrentValueType CurrentValueType = ECurrentValueType::None;
const FText MultipleValues = LOCTEXT("MultipleValuesLabel", "Multiple Values");
const FText Bind = LOCTEXT("BindLabel", "Bind");
const FText ExposedAsPin = LOCTEXT("ExposedAsPinLabel", "Pin");
const FText Dynamic = LOCTEXT("DynamicLabel", "Dynamic");
FText CurrentValue = Bind;
auto SetAssignValue = [&CurrentValueType, &CurrentValue, &MultipleValues](const FText& InValue, ECurrentValueType InType)
{
if(CurrentValueType != ECurrentValueType::MultipleValues)
{
if(CurrentValueType == ECurrentValueType::None)
{
CurrentValueType = InType;
CurrentValue = InValue;
}
else if(CurrentValueType == InType)
{
if(!CurrentValue.EqualTo(InValue))
{
CurrentValueType = ECurrentValueType::MultipleValues;
CurrentValue = MultipleValues;
}
}
else
{
CurrentValueType = ECurrentValueType::MultipleValues;
CurrentValue = MultipleValues;
}
}
};
const FName ComparisonName = FName(InArgs.PinName, 0);
for(UAnimGraphNode_Base* AnimGraphNode : InArgs.Nodes)
{
if(FAnimGraphNodePropertyBinding* BindingPtr = AnimGraphNode->PropertyBindings.Find(InArgs.BindingName))
{
SetAssignValue(BindingPtr->PathAsText, ECurrentValueType::Binding);
}
else if(AnimGraphNode->AlwaysDynamicProperties.Find(ComparisonName))
{
SetAssignValue(Dynamic, ECurrentValueType::Dynamic);
}
else
{
TArrayView<FOptionalPinFromProperty> OptionalPins;
InArgs.OnGetOptionalPins.ExecuteIfBound(AnimGraphNode, OptionalPins);
if(OptionalPins.IsValidIndex(InArgs.OptionalPinIndex) && OptionalPins[InArgs.OptionalPinIndex].bShowPin)
{
SetAssignValue(InArgs.bOnGraphNode ? Bind : ExposedAsPin, ECurrentValueType::Pin);
}
else
{
SetAssignValue(Bind, ECurrentValueType::None);
}
}
}
return CurrentValue;
};
auto CurrentBindingToolTipText = [InArgs]()
{
ECurrentValueType CurrentValueType = ECurrentValueType::None;
const FText MultipleValues = LOCTEXT("MultipleValuesToolTip", "Bindings Have Multiple Values");
const FText ExposedAsPin = LOCTEXT("ExposedAsPinToolTip", "Exposed As a Pin on the Node");
const FText BindValue = LOCTEXT("BindValueToolTip", "Bind This Value");
const FText DynamicValue = LOCTEXT("DynamicValueToolTip", "Dynamic value that can be set externally");
FText CurrentValue;
auto SetAssignValue = [&CurrentValueType, &CurrentValue, &MultipleValues](const FText& InValue, ECurrentValueType InType)
{
if(CurrentValueType != ECurrentValueType::MultipleValues)
{
if(CurrentValueType == ECurrentValueType::None)
{
CurrentValueType = InType;
CurrentValue = InValue;
}
else if(CurrentValueType == InType)
{
if(!CurrentValue.EqualTo(InValue))
{
CurrentValueType = ECurrentValueType::MultipleValues;
CurrentValue = MultipleValues;
}
}
else
{
CurrentValueType = ECurrentValueType::MultipleValues;
CurrentValue = MultipleValues;
}
}
};
const FName ComparisonName = FName(InArgs.PinName, 0);
for(UAnimGraphNode_Base* AnimGraphNode : InArgs.Nodes)
{
if(FAnimGraphNodePropertyBinding* BindingPtr = AnimGraphNode->PropertyBindings.Find(InArgs.BindingName))
{
if(BindingPtr->PathAsText.IsEmpty())
{
SetAssignValue(BindValue, ECurrentValueType::Binding);
}
else
{
const FText& CompilationContext = BindingPtr->CompiledContext;
const FText& CompilationContextDesc = BindingPtr->CompiledContextDesc;
if(CompilationContext.IsEmpty() && CompilationContextDesc.IsEmpty())
{
SetAssignValue(FText::Format(LOCTEXT("BindingToolTipFormat", "Pin is bound to property '{0}'"), BindingPtr->PathAsText), ECurrentValueType::Binding);
}
else
{
SetAssignValue(FText::Format(LOCTEXT("BindingToolTipFormatWithDesc", "Pin is bound to property '{0}'\n{1}\n{2}"), BindingPtr->PathAsText, CompilationContext, CompilationContextDesc), ECurrentValueType::Binding);
}
}
}
else if(AnimGraphNode->AlwaysDynamicProperties.Find(ComparisonName))
{
SetAssignValue(DynamicValue, ECurrentValueType::Dynamic);
}
else
{
TArrayView<FOptionalPinFromProperty> OptionalPins;
InArgs.OnGetOptionalPins.ExecuteIfBound(AnimGraphNode, OptionalPins);
if(OptionalPins.IsValidIndex(InArgs.OptionalPinIndex) && OptionalPins[InArgs.OptionalPinIndex].bShowPin)
{
SetAssignValue(InArgs.bOnGraphNode ? BindValue : ExposedAsPin, ECurrentValueType::Pin);
}
else
{
SetAssignValue(BindValue, ECurrentValueType::None);
}
}
}
return CurrentValue;
};
auto CurrentBindingImage = [InArgs, BindingPropertyPath]() -> const FSlateBrush*
{
static FName PropertyIcon(TEXT("Kismet.VariableList.TypeIcon"));
static FName FunctionIcon(TEXT("GraphEditor.Function_16x"));
EAnimGraphNodePropertyBindingType BindingType = EAnimGraphNodePropertyBindingType::None;
for(UObject* OuterObject : InArgs.Nodes)
{
if(UAnimGraphNode_Base* AnimGraphNode = Cast<UAnimGraphNode_Base>(OuterObject))
{
TArrayView<FOptionalPinFromProperty> OptionalPins;
InArgs.OnGetOptionalPins.ExecuteIfBound(AnimGraphNode, OptionalPins);
if(OptionalPins.IsValidIndex(InArgs.OptionalPinIndex) && OptionalPins[InArgs.OptionalPinIndex].bShowPin)
{
BindingType = EAnimGraphNodePropertyBindingType::None;
break;
}
else if(FAnimGraphNodePropertyBinding* BindingPtr = AnimGraphNode->PropertyBindings.Find(InArgs.BindingName))
{
if(BindingType == EAnimGraphNodePropertyBindingType::None)
{
BindingType = BindingPtr->Type;
}
else if(BindingType != BindingPtr->Type)
{
BindingType = EAnimGraphNodePropertyBindingType::None;
break;
}
}
else if(BindingType != EAnimGraphNodePropertyBindingType::None)
{
BindingType = EAnimGraphNodePropertyBindingType::None;
break;
}
}
}
if (BindingType == EAnimGraphNodePropertyBindingType::Function)
{
return FEditorStyle::GetBrush(FunctionIcon);
}
else
{
const UAnimationGraphSchema* AnimationGraphSchema = GetDefault<UAnimationGraphSchema>();
FProperty* BindingProperty = BindingPropertyPath.Get();
FEdGraphPinType PinType;
if(BindingProperty != nullptr && AnimationGraphSchema->ConvertPropertyToPinType(BindingProperty, PinType))
{
return FBlueprintEditorUtils::GetIconFromPin(PinType, false);
}
else
{
return FEditorStyle::GetBrush(PropertyIcon);
}
}
};
auto CurrentBindingColor = [InArgs, BindingPropertyPath]() -> FLinearColor
{
const UEdGraphSchema_K2* Schema = GetDefault<UEdGraphSchema_K2>();
FLinearColor BindingColor = FLinearColor::Gray;
FProperty* BindingProperty = BindingPropertyPath.Get();
FEdGraphPinType PinType;
if(BindingProperty != nullptr && Schema->ConvertPropertyToPinType(BindingProperty, PinType))
{
BindingColor = Schema->GetPinTypeColor(PinType);
enum class EPromotionState
{
NotChecked,
NotPromoted,
Promoted,
} Promotion = EPromotionState::NotChecked;
for(UAnimGraphNode_Base* AnimGraphNode : InArgs.Nodes)
{
TArrayView<FOptionalPinFromProperty> OptionalPins;
InArgs.OnGetOptionalPins.ExecuteIfBound(AnimGraphNode, OptionalPins);
if(OptionalPins.IsValidIndex(InArgs.OptionalPinIndex) && OptionalPins[InArgs.OptionalPinIndex].bShowPin)
{
if(Promotion == EPromotionState::NotChecked)
{
Promotion = EPromotionState::NotPromoted;
}
else if(Promotion == EPromotionState::Promoted)
{
BindingColor = FLinearColor::Gray;
break;
}
}
else if(FAnimGraphNodePropertyBinding* BindingPtr = AnimGraphNode->PropertyBindings.Find(InArgs.BindingName))
{
if(Promotion == EPromotionState::NotChecked)
{
if(BindingPtr->bIsPromotion)
{
Promotion = EPromotionState::Promoted;
BindingColor = Schema->GetPinTypeColor(BindingPtr->PromotedPinType);
}
else
{
Promotion = EPromotionState::NotPromoted;
}
}
else
{
EPromotionState NewPromotion = BindingPtr->bIsPromotion ? EPromotionState::Promoted : EPromotionState::NotPromoted;
if(Promotion != NewPromotion)
{
BindingColor = FLinearColor::Gray;
break;
}
}
}
}
}
return BindingColor;
};
auto AddMenuExtension = [InArgs, Blueprint, BindingPropertyPath, PinPropertyPath](FMenuBuilder& InMenuBuilder)
{
InMenuBuilder.BeginSection("Pins", LOCTEXT("Pin", "Pin"));
{
auto ExposeAsPin = [InArgs, Blueprint]()
{
bool bHasBinding = false;
for(UAnimGraphNode_Base* AnimGraphNode : InArgs.Nodes)
{
if(AnimGraphNode->HasBinding(InArgs.BindingName))
{
bHasBinding = true;
break;
}
}
{
FScopedTransaction Transaction(LOCTEXT("PinExposure", "Pin Exposure"));
// Switching from non-pin to pin, remove any bindings
for(UAnimGraphNode_Base* AnimGraphNode : InArgs.Nodes)
{
AnimGraphNode->Modify();
TArrayView<FOptionalPinFromProperty> OptionalPins;
InArgs.OnGetOptionalPins.ExecuteIfBound(AnimGraphNode, OptionalPins);
const bool bVisible = OptionalPins.IsValidIndex(InArgs.OptionalPinIndex) && OptionalPins[InArgs.OptionalPinIndex].bShowPin;
InArgs.OnSetPinVisibility.ExecuteIfBound(AnimGraphNode, !bVisible || bHasBinding, InArgs.OptionalPinIndex);
// Remove all bindings that match the property, array or array elements
const FName ComparisonName = FName(InArgs.BindingName, 0);
for(auto It = AnimGraphNode->PropertyBindings.CreateIterator(); It; ++It)
{
if(ComparisonName == FName(It.Key(), 0))
{
It.RemoveCurrent();
}
}
}
FBlueprintEditorUtils::MarkBlueprintAsModified(Blueprint);
}
};
auto GetExposedAsPinCheckState = [InArgs]()
{
bool bPinShown = false;
bool bHasBinding = false;
for(UAnimGraphNode_Base* AnimGraphNode : InArgs.Nodes)
{
if(AnimGraphNode->HasBinding(InArgs.BindingName))
{
bHasBinding = true;
break;
}
TArrayView<FOptionalPinFromProperty> OptionalPins;
InArgs.OnGetOptionalPins.ExecuteIfBound(AnimGraphNode, OptionalPins);
bPinShown |= OptionalPins.IsValidIndex(InArgs.OptionalPinIndex) && OptionalPins[InArgs.OptionalPinIndex].bShowPin;
}
// Pins are exposed if we have a binding or not, so treat as unchecked only if we have
// no binding
return bPinShown && !bHasBinding ? ECheckBoxState::Checked : ECheckBoxState::Unchecked;
};
InMenuBuilder.AddMenuEntry(
LOCTEXT("ExposeAsPin", "Expose As Pin"),
LOCTEXT("ExposeAsPinTooltip", "Show/hide this property as a pin on the node"),
FSlateIcon("EditorStyle", "GraphEditor.PinIcon"),
FUIAction(
FExecuteAction::CreateLambda(ExposeAsPin),
FCanExecuteAction(),
FGetActionCheckState::CreateLambda(GetExposedAsPinCheckState)
),
NAME_None,
EUserInterfaceActionType::Check
);
if(InArgs.bPropertyIsOnFNode)
{
auto MakeDynamic = [InArgs, Blueprint]()
{
// Comparison without name index to deal with arrays
const FName ComparisonName = FName(InArgs.PinName, 0);
bool bIsAlwaysDynamic = false;
for(UAnimGraphNode_Base* AnimGraphNode : InArgs.Nodes)
{
if(AnimGraphNode->AlwaysDynamicProperties.Contains(ComparisonName))
{
bIsAlwaysDynamic = true;
break;
}
}
{
FScopedTransaction Transaction(LOCTEXT("AlwaysDynamic", "Always Dynamic"));
for(UAnimGraphNode_Base* AnimGraphNode : InArgs.Nodes)
{
AnimGraphNode->Modify();
if(bIsAlwaysDynamic)
{
AnimGraphNode->AlwaysDynamicProperties.Remove(ComparisonName);
}
else
{
AnimGraphNode->AlwaysDynamicProperties.Add(ComparisonName);
}
}
FBlueprintEditorUtils::MarkBlueprintAsModified(Blueprint);
}
};
auto GetDynamicCheckState = [InArgs]()
{
// Comparison without name index to deal with arrays
const FName ComparisonName = FName(InArgs.PinName, 0);
bool bIsAlwaysDynamic = false;
for(UAnimGraphNode_Base* AnimGraphNode : InArgs.Nodes)
{
for(const FName& AlwaysDynamicPropertyName : AnimGraphNode->AlwaysDynamicProperties)
{
if(ComparisonName == FName(AlwaysDynamicPropertyName, 0))
{
bIsAlwaysDynamic = true;
break;
}
}
}
return bIsAlwaysDynamic ? ECheckBoxState::Checked : ECheckBoxState::Unchecked;
};
InMenuBuilder.AddMenuEntry(
LOCTEXT("DynamicValue", "Dynamic Value"),
LOCTEXT("DynamicValueTooltip", "Flag this value as dynamic. This way it can be set from functions even when not exposed as a pin."),
FSlateIcon(),
FUIAction(
FExecuteAction::CreateLambda(MakeDynamic),
FCanExecuteAction(),
FGetActionCheckState::CreateLambda(GetDynamicCheckState)
),
NAME_None,
EUserInterfaceActionType::Check
);
}
}
InMenuBuilder.EndSection();
};
FPropertyBindingWidgetArgs Args;
Args.Property = PropertyToBindTo;
Args.OnCanBindProperty = FOnCanBindProperty::CreateLambda(OnCanBindProperty);
Args.OnCanBindFunction = FOnCanBindFunction::CreateLambda(OnCanBindFunction);
Args.OnCanBindToClass = FOnCanBindToClass::CreateLambda([](UClass* InClass){ return true; });
Args.OnAddBinding = FOnAddBinding::CreateLambda(OnAddBinding);
Args.OnRemoveBinding = FOnRemoveBinding::CreateLambda(OnRemoveBinding);
Args.OnCanRemoveBinding = FOnCanRemoveBinding::CreateLambda(CanRemoveBinding);
Args.CurrentBindingText = MakeAttributeLambda(CurrentBindingText);
Args.CurrentBindingToolTipText = MakeAttributeLambda(CurrentBindingToolTipText);
Args.CurrentBindingImage = MakeAttributeLambda(CurrentBindingImage);
Args.CurrentBindingColor = MakeAttributeLambda(CurrentBindingColor);
Args.MenuExtender = MakeShared<FExtender>();
Args.MenuExtender->AddMenuExtension("BindingActions", EExtensionHook::Before, nullptr, FMenuExtensionDelegate::CreateLambda(AddMenuExtension));
if(InArgs.MenuExtender.IsValid())
{
Args.MenuExtender = FExtender::Combine( { Args.MenuExtender, InArgs.MenuExtender } );
}
IPropertyAccessBlueprintBinding::FContext BindingContext;
BindingContext.Blueprint = FBlueprintEditorUtils::FindBlueprintForNode(FirstAnimGraphNode);
BindingContext.Graph = FirstAnimGraphNode->GetGraph();
BindingContext.Node = FirstAnimGraphNode;
BindingContext.Pin = FirstAnimGraphNode->FindPin(InArgs.PinName);
auto OnSetPropertyAccessContextId = [InArgs, Blueprint](const FName& InContextId)
{
for(UAnimGraphNode_Base* AnimGraphNode : InArgs.Nodes)
{
if(FAnimGraphNodePropertyBinding* Binding = AnimGraphNode->PropertyBindings.Find(InArgs.BindingName))
{
AnimGraphNode->Modify();
Binding->ContextId = InContextId;
}
}
FBlueprintEditorUtils::MarkBlueprintAsModified(Blueprint);
};
auto OnCanSetPropertyAccessContextId = [InArgs, FirstAnimGraphNode](const FName& InContextId)
{
return FirstAnimGraphNode->PropertyBindings.Find(InArgs.BindingName) != nullptr;
};
auto OnGetPropertyAccessContextId = [InArgs]() -> FName
{
FName CurrentContext = NAME_None;
for(UAnimGraphNode_Base* AnimGraphNode : InArgs.Nodes)
{
if(FAnimGraphNodePropertyBinding* Binding = AnimGraphNode->PropertyBindings.Find(InArgs.BindingName))
{
if(CurrentContext != NAME_None && CurrentContext != Binding->ContextId)
{
return NAME_None;
}
else
{
CurrentContext = Binding->ContextId;
}
}
}
return CurrentContext;
};
IPropertyAccessBlueprintBinding::FBindingMenuArgs MenuArgs;
MenuArgs.OnSetPropertyAccessContextId = FOnSetPropertyAccessContextId::CreateLambda(OnSetPropertyAccessContextId);
MenuArgs.OnCanSetPropertyAccessContextId = FOnCanSetPropertyAccessContextId::CreateLambda(OnCanSetPropertyAccessContextId);
MenuArgs.OnGetPropertyAccessContextId = FOnGetPropertyAccessContextId::CreateLambda(OnGetPropertyAccessContextId);
// Add the binding menu extenders
TArray<TSharedPtr<FExtender>> Extenders( { Args.MenuExtender } );
for(IPropertyAccessBlueprintBinding* Binding : IModularFeatures::Get().GetModularFeatureImplementations<IPropertyAccessBlueprintBinding>("PropertyAccessBlueprintBinding"))
{
TSharedPtr<FExtender> BindingExtender = Binding->MakeBindingMenuExtender(BindingContext, MenuArgs);
if(BindingExtender)
{
Extenders.Add(BindingExtender);
}
}
if(Extenders.Num() > 0)
{
Args.MenuExtender = FExtender::Combine(Extenders);
}
Args.bAllowNewBindings = false;
Args.bAllowArrayElementBindings = !bIsArray;
Args.bAllowUObjectFunctions = !bIsArray;
Args.bAllowStructFunctions = !bIsArray;
IPropertyAccessEditor& PropertyAccessEditor = IModularFeatures::Get().GetModularFeature<IPropertyAccessEditor>("PropertyAccessEditor");
const FTextBlockStyle& TextBlockStyle = FEditorStyle::Get().GetWidgetStyle<FTextBlockStyle>("PropertyAccess.CompiledContext.Text");
return
SNew(SBox)
.MaxDesiredWidth(200.0f)
[
SNew(SOverlay)
+SOverlay::Slot()
.HAlign(HAlign_Right)
.VAlign(VAlign_Bottom)
[
SNew(SBorder)
.Padding(FMargin(1.0f, 3.0f, 1.0f, 1.0f))
.Visibility(InArgs.bOnGraphNode ? EVisibility::Visible : EVisibility::Collapsed)
.BorderImage(FEditorStyle::GetBrush("PropertyAccess.CompiledContext.Border"))
.RenderTransform_Lambda([InArgs, FirstAnimGraphNode, &TextBlockStyle]()
{
const FAnimGraphNodePropertyBinding* BindingPtr = FirstAnimGraphNode->PropertyBindings.Find(InArgs.BindingName);
FVector2D TextSize(0.0f, 0.0f);
if(BindingPtr)
{
const TSharedRef<FSlateFontMeasure> FontMeasureService = FSlateApplication::Get().GetRenderer()->GetFontMeasureService();
TextSize = FontMeasureService->Measure(BindingPtr->CompiledContext, TextBlockStyle.Font);
}
return FSlateRenderTransform(FVector2D(0.0f, TextSize.Y - 1.0f));
})
[
SNew(STextBlock)
.TextStyle(&TextBlockStyle)
.Visibility_Lambda([InArgs, FirstAnimGraphNode, bMultiSelect]()
{
const FAnimGraphNodePropertyBinding* BindingPtr = FirstAnimGraphNode->PropertyBindings.Find(InArgs.BindingName);
return bMultiSelect || BindingPtr == nullptr || BindingPtr->CompiledContext.IsEmpty() ? EVisibility::Collapsed : EVisibility::Visible;
})
.Text_Lambda([InArgs, FirstAnimGraphNode]()
{
const FAnimGraphNodePropertyBinding* BindingPtr = FirstAnimGraphNode->PropertyBindings.Find(InArgs.BindingName);
return BindingPtr != nullptr ? BindingPtr->CompiledContext : FText::GetEmpty();
})
]
]
+SOverlay::Slot()
[
PropertyAccessEditor.MakePropertyBindingWidget(Blueprint, Args)
]
];
}
else
{
return SNew(SSpacer);
}
}
#undef LOCTEXT_NAMESPACE
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