You've already forked UnrealEngineUWP
mirror of
https://github.com/izzy2lost/UnrealEngineUWP.git
synced 2026-03-26 18:15:20 -07:00
34f4d6d5fd
#TTP 334976 - BLUEPRINTS: Drag-dropping can still create nodes in read-only graphs (e.g., during PIE or when viewing an anim parent graph) #Branch UE4 #Proj GraphEditor #Add added SGraphPanel::IsGraphEditable so nodes and objects placed in the graph can easily determine if the graph is read only. #Change Modified SGraphPanel::OnDragLeave to restore the tooltip if a FDecoratedDragDropOp has been modified to indicate that the graph is read only. #Change Modified SGraphPanel::OnDragOver to change the icon on the tooltip to a lined circle if the graph is read only. #Change Modified SGraphPanel::OnDrop to exit without changes if the graph is read only. #Change Modified FGraphEditorDragDropAction to present feedback to the user if the drag drop target is invalid. this is activated by setting FGraphEditorDragDropAction::SetDropTargetValid, this just collpases the active icon and displays a lined circle with the same tooltip when set to false. #Add added SGraphNode::IsNodeEditable to determine if the node is currently editable, based on an evaluation of the IsEditable attribute and the parent graphs IsGraphEditable. #Change modified SGraphNode::OnDragOver to display a lined circle if the parent graph or the node is read only. #Change modified SGraphNode::OnDrop to exit without changes if the parent graph or the node is read only. #Change modified SGraphPin::OnDrop to exit without changes if the parent graph or the owner node is read only. ReviewedBy Chris.Wood, Nick.Whiting [CL 2109030 by Ben Cosh in Main branch]
89 lines
3.4 KiB
C++
89 lines
3.4 KiB
C++
// Copyright 1998-2014 Epic Games, Inc. All Rights Reserved.
|
|
|
|
#pragma once
|
|
|
|
// Base class for drag-drop actions that pass into the graph editor and perform an action when dropped
|
|
class GRAPHEDITOR_API FGraphEditorDragDropAction : public FDragDropOperation
|
|
{
|
|
public:
|
|
DRAG_DROP_OPERATOR_TYPE(FGraphEditorDragDropAction, FDragDropOperation)
|
|
|
|
void SetHoveredPin(class UEdGraphPin* InPin);
|
|
void SetHoveredNode(const TSharedPtr<class SGraphNode>& InNode);
|
|
void SetHoveredGraph(const TSharedPtr<class SGraphPanel>& InGraph);
|
|
void SetHoveredCategoryName(const FString& InHoverCategoryName);
|
|
void SetHoveredAction(TSharedPtr<struct FEdGraphSchemaAction> Action);
|
|
void SetDropTargetValid( bool bValid ) { bDropTargetValid = bValid; }
|
|
|
|
// Interface to override
|
|
virtual void HoverTargetChanged() {}
|
|
virtual FReply DroppedOnPin(FVector2D ScreenPosition, FVector2D GraphPosition) { return FReply::Unhandled(); }
|
|
virtual FReply DroppedOnNode(FVector2D ScreenPosition, FVector2D GraphPosition) { return FReply::Unhandled(); }
|
|
virtual FReply DroppedOnPanel( const TSharedRef< class SWidget >& Panel, FVector2D ScreenPosition, FVector2D GraphPosition, UEdGraph& Graph) { return FReply::Unhandled(); }
|
|
virtual FReply DroppedOnAction(TSharedRef<struct FEdGraphSchemaAction> Action) { return FReply::Unhandled(); }
|
|
virtual FReply DroppedOnCategory(FString Category) { return FReply::Unhandled(); }
|
|
virtual void OnDragBegin(const TSharedRef<class SGraphPin>& InPin) {}
|
|
// End of interface to override
|
|
|
|
protected:
|
|
void SetFeedbackMessage(const TSharedPtr<SWidget>& Message);
|
|
void SetSimpleFeedbackMessage(const FSlateBrush* Icon, const FSlateColor& IconColor, const FText& Message);
|
|
|
|
UEdGraphPin* GetHoveredPin() const;
|
|
UEdGraphNode* GetHoveredNode() const;
|
|
UEdGraph* GetHoveredGraph() const;
|
|
|
|
/** Constructs the window and widget if applicable */
|
|
virtual void Construct();
|
|
|
|
private:
|
|
|
|
EVisibility GetIconVisible() const;
|
|
EVisibility GetErrorIconVisible() const;
|
|
|
|
// The pin that the drag action is currently hovering over
|
|
TWeakObjectPtr<class UEdGraphPin> HoveredPin;
|
|
|
|
// The node that the drag action is currently hovering over
|
|
TSharedPtr<class SGraphNode> HoveredNode;
|
|
|
|
// The graph that the drag action is currently hovering over
|
|
TSharedPtr<class SGraphPanel> HoveredGraph;
|
|
|
|
protected:
|
|
|
|
// Name of category we are hovering over
|
|
FString HoveredCategoryName;
|
|
|
|
// Action we are hovering over
|
|
TWeakPtr<struct FEdGraphSchemaAction> HoveredAction;
|
|
|
|
// drop target status
|
|
bool bDropTargetValid;
|
|
};
|
|
|
|
// Drag-drop action where an FEdGraphSchemaAction should be performed when dropped
|
|
class GRAPHEDITOR_API FGraphSchemaActionDragDropAction : public FGraphEditorDragDropAction
|
|
{
|
|
public:
|
|
|
|
DRAG_DROP_OPERATOR_TYPE(FGraphSchemaActionDragDropAction, FGraphEditorDragDropAction)
|
|
|
|
// FGraphEditorDragDropAction interface
|
|
virtual void HoverTargetChanged() override;
|
|
virtual FReply DroppedOnPanel( const TSharedRef< class SWidget >& Panel, FVector2D ScreenPosition, FVector2D GraphPosition, UEdGraph& Graph) override;
|
|
// End of FGraphEditorDragDropAction
|
|
|
|
static TSharedRef<FGraphSchemaActionDragDropAction> New(TSharedPtr<FEdGraphSchemaAction> InActionNode )
|
|
{
|
|
TSharedRef<FGraphSchemaActionDragDropAction> Operation = MakeShareable(new FGraphSchemaActionDragDropAction);
|
|
Operation->ActionNode = InActionNode;
|
|
Operation->Construct();
|
|
return Operation;
|
|
}
|
|
|
|
protected:
|
|
/** */
|
|
TSharedPtr<FEdGraphSchemaAction> ActionNode;
|
|
};
|