151 lines
5.0 KiB
C++
151 lines
5.0 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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/*=============================================================================
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MaterialGraphNode_Comment.cpp
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=============================================================================*/
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#include "MaterialGraph/MaterialGraphNode_Comment.h"
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#include "ToolMenus.h"
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#include "MaterialGraph/MaterialGraphSchema.h"
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#include "Materials/MaterialExpressionComment.h"
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#include "Framework/Commands/GenericCommands.h"
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/////////////////////////////////////////////////////
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// UMaterialGraphNode_Comment
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UMaterialGraphNode_Comment::UMaterialGraphNode_Comment(const FObjectInitializer& ObjectInitializer)
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: Super(ObjectInitializer)
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{
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}
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void UMaterialGraphNode_Comment::PostCopyNode()
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{
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// Make sure the MaterialExpression goes back to being owned by the Material after copying.
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ResetMaterialExpressionOwner();
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}
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void UMaterialGraphNode_Comment::PostEditChangeProperty(FPropertyChangedEvent& PropertyChangedEvent)
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{
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Super::PostEditChangeProperty(PropertyChangedEvent);
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if (PropertyChangedEvent.Property)
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{
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const FName PropertyName = PropertyChangedEvent.Property->GetFName();
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if (PropertyName == FName(TEXT("NodeComment")))
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{
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if (MaterialExpressionComment)
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{
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MaterialExpressionComment->Modify();
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MaterialExpressionComment->Text = NodeComment;
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}
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}
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}
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}
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void UMaterialGraphNode_Comment::PostEditImport()
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{
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// Make sure this MaterialExpression is owned by the Material it's being pasted into.
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ResetMaterialExpressionOwner();
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}
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void UMaterialGraphNode_Comment::PostDuplicate(bool bDuplicateForPIE)
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{
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Super::PostDuplicate(bDuplicateForPIE);
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if (!bDuplicateForPIE)
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{
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CreateNewGuid();
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}
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}
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void UMaterialGraphNode_Comment::PrepareForCopying()
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{
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if (MaterialExpressionComment)
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{
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// Temporarily take ownership of the MaterialExpression, so that it is not deleted when cutting
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MaterialExpressionComment->Rename(NULL, this, REN_DontCreateRedirectors);
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}
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}
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void UMaterialGraphNode_Comment::GetNodeContextMenuActions(UToolMenu* Menu, UGraphNodeContextMenuContext* Context) const
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{
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if (Context->Node && !Context->Pin)
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{
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// frequently used common options
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{
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FToolMenuSection& Section = Menu->AddSection("MaterialEditorCommentMenu");
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Section.AddMenuEntry(FGenericCommands::Get().Delete);
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Section.AddMenuEntry(FGenericCommands::Get().Cut);
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Section.AddMenuEntry(FGenericCommands::Get().Copy);
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Section.AddMenuEntry(FGenericCommands::Get().Duplicate);
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}
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}
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}
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bool UMaterialGraphNode_Comment::CanCreateUnderSpecifiedSchema(const UEdGraphSchema* Schema) const
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{
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return Schema->IsA(UMaterialGraphSchema::StaticClass());
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}
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void UMaterialGraphNode_Comment::PostPlacedNewNode()
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{
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// always used for material comments
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MoveMode = ECommentBoxMode::GroupMovement;
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if (MaterialExpressionComment)
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{
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NodeComment = MaterialExpressionComment->Text;
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NodePosX = MaterialExpressionComment->MaterialExpressionEditorX;
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NodePosY = MaterialExpressionComment->MaterialExpressionEditorY;
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NodeWidth = MaterialExpressionComment->SizeX;
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NodeHeight = MaterialExpressionComment->SizeY;
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CommentColor = MaterialExpressionComment->CommentColor;
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}
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}
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void UMaterialGraphNode_Comment::OnRenameNode(const FString& NewName)
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{
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// send property changed events
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FProperty* NodeCommentProperty = FindFProperty<FProperty>(GetClass(), "NodeComment");
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if (NodeCommentProperty != NULL)
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{
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PreEditChange(NodeCommentProperty);
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NodeComment = NewName;
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FPropertyChangedEvent NodeCommentPropertyChangedEvent(NodeCommentProperty);
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PostEditChangeProperty(NodeCommentPropertyChangedEvent);
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}
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}
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void UMaterialGraphNode_Comment::ResizeNode(const FVector2D& NewSize)
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{
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Super::ResizeNode(NewSize);
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// Set position as well since may have been resized from top corner
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MaterialExpressionComment->SizeX = NodeWidth;
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MaterialExpressionComment->SizeY = NodeHeight;
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MaterialExpressionComment->MaterialExpressionEditorX = NodePosX;
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MaterialExpressionComment->MaterialExpressionEditorY = NodePosY;
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MaterialExpressionComment->MarkPackageDirty();
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MaterialDirtyDelegate.ExecuteIfBound();
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}
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void UMaterialGraphNode_Comment::ResetMaterialExpressionOwner()
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{
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if (MaterialExpressionComment)
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{
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// Ensures MaterialExpression is owned by the Material or Function
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UMaterialGraph* MaterialGraph = CastChecked<UMaterialGraph>(GetGraph());
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UObject* ExpressionOuter = MaterialGraph->Material;
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if (MaterialGraph->MaterialFunction)
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{
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ExpressionOuter = MaterialGraph->MaterialFunction;
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}
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MaterialExpressionComment->Rename(NULL, ExpressionOuter, REN_DontCreateRedirectors);
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// Set up the back pointer for newly created material nodes
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MaterialExpressionComment->GraphNode = this;
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}
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}
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