更新 ui拖拽时 可以进行旋转

ProjectFish/Binaries/Win64/UnrealEditor.modules

@@ -2,7 +2,7 @@
 	"BuildId": "37670630",
 	"Modules": 
 	{
-		"ProjectFish": "UnrealEditor-ProjectFish-0027.dll",
-		"ProjectFishEditor": "UnrealEditor-ProjectFishEditor-0027.dll"
+		"ProjectFish": "UnrealEditor-ProjectFish.dll",
+		"ProjectFishEditor": "UnrealEditor-ProjectFishEditor.dll"
 	}
 }

ProjectFish/Plugins/DeskMode/Binaries/Win64/UnrealEditor.modules

@@ -2,6 +2,6 @@
 	"BuildId": "37670630",
 	"Modules": 
 	{
-		"DeskMode": "UnrealEditor-DeskMode-0027.dll"
+		"DeskMode": "UnrealEditor-DeskMode.dll"
 	}
 }

ProjectFish/Source/ProjectFish/Gameplay/Subsystem/UIManagerSubsystem.cpp

@@ -3,14 +3,51 @@
 
 #include "UIManagerSubsystem.h"
 #include "ProjectFish/Widget/DragableUserWidget.h"
+#include "Framework/Application/SlateApplication.h"
+#include "Components/CanvasPanelSlot.h"
 
 
+void UUIManagerSubsystem::Initialize(FSubsystemCollectionBase& Collection)
+{
+	Super::Initialize(Collection);
+	FSlateApplication& SlateApp = FSlateApplication::Get();
+	SlateApp.OnApplicationMousePreInputButtonDownListener().AddUObject(this, &UUIManagerSubsystem::OnMouseButtonDown);
+}
+
 void UUIManagerSubsystem::AddDragWidget(UDragableUserWidget* UserWidget)
 {
+	UserWidget->AddToViewport();
+	UserWidget->SetVisibility(ESlateVisibility::HitTestInvisible);
 	DragDropWidget = MakeWeakObjectPtr(UserWidget);
 }
 
 void UUIManagerSubsystem::RemoveDragWidget()
 {
+	if (DragDropWidget.IsValid())
+	{
+		DragDropWidget->RemoveFromViewport();
+	}
 	DragDropWidget.Reset();
 }
+
+UDragableUserWidget* UUIManagerSubsystem::GetDragWidget()
+{
+	if (DragDropWidget.IsValid())
+	{
+		return DragDropWidget.Get();
+	}
+	return nullptr;
+}
+
+void UUIManagerSubsystem::OnMouseButtonDown(const FPointerEvent& PointerEvent)
+{
+	if (DragDropWidget.IsValid())
+	{
+		if (PointerEvent.GetEffectingButton() == EKeys::RightMouseButton)
+		{
+			DragDropWidget->OnMouseButtonDownWhenDragging(PointerEvent);
+		}
+	}
+}
+
+

ProjectFish/Source/ProjectFish/Gameplay/Subsystem/UIManagerSubsystem.h

@@ -16,11 +16,15 @@ class PROJECTFISH_API UUIManagerSubsystem : public UGameInstanceSubsystem
 {
 	GENERATED_BODY()
 public:
-	
+	virtual void Initialize(FSubsystemCollectionBase& Collection) override;
 	UFUNCTION(BlueprintCallable, Category = "UIManagerSubsystem")
 	void AddDragWidget(class UDragableUserWidget* UserWidget);
 	UFUNCTION(BlueprintCallable, Category = "UIManagerSubsystem")
 	void RemoveDragWidget();
+	UFUNCTION(BlueprintPure, Category = "UIManagerSubsystem")
+	UDragableUserWidget* GetDragWidget();
+
+	void OnMouseButtonDown(const FPointerEvent& PointerEvent);
 
 protected:
 	TWeakObjectPtr<class UDragableUserWidget> DragDropWidget;

ProjectFish/Source/ProjectFish/Widget/DragableUserWidget.cpp

@@ -15,9 +15,10 @@ void UDragableUserWidget::SetWidgetDragable(bool Dragable)
 void UDragableUserWidget::BeginDrag(const FGeometry& InGeometry)
 {
 	bDraging = true;
-	OriginWidgetScreenPos = InGeometry.GetAbsolutePosition();
+	//OriginWidgetScreenPos = InGeometry.GetAbsolutePosition();
 	UUIManagerSubsystem* UIManager = GetGameInstance()->GetSubsystem<UUIManagerSubsystem>();
 	UIManager->AddDragWidget(this);
+	
 }
 
 void UDragableUserWidget::EndDrag()
@@ -28,93 +29,88 @@ void UDragableUserWidget::EndDrag()
 	UIManager->RemoveDragWidget();
 }
 
-FReply UDragableUserWidget::NativeOnMouseButtonDown(const FGeometry& InGeometry, const FPointerEvent& InMouseEvent)
-{
-	if (bDragable && InMouseEvent.GetEffectingButton() == EKeys::LeftMouseButton)
-	{
-		if (bDraging)
-		{
-			EndDrag();
-			return FReply::Unhandled();
-		}
-		else
-		{
-			BeginDrag(InGeometry);
-			return FReply::Handled();
-		}
-	}
-	else
-	{
-		return Super::NativeOnMouseButtonDown(InGeometry, InMouseEvent);
-	}
-
-}
-
-FReply UDragableUserWidget::NativeOnMouseButtonUp(const FGeometry& InGeometry, const FPointerEvent& InMouseEvent)
-{
-	return Super::NativeOnMouseButtonUp(InGeometry, InMouseEvent);
-}
-
-FReply UDragableUserWidget::NativeOnMouseMove(const FGeometry& InGeometry, const FPointerEvent& InMouseEvent)
-{
-	if (bDraging)
-	{
-		Super::NativeOnMouseMove(InGeometry, InMouseEvent);
-        
-		// 获取鼠标在屏幕空间的绝对坐标
-		FVector2D MouseScreenPos = InMouseEvent.GetScreenSpacePosition();
-        
-		// 获取Widget在屏幕上的实际渲染尺寸
-		
-		FVector2D WidgetAbsoluteSize = InGeometry.GetDrawSize();
-        
-		// 计算Widget中心点应对应的屏幕位置
-		FVector2D DesiredCenter = MouseScreenPos;
-        
-		// 计算新的左上角位置（让中心点对准鼠标）
-		FVector2D NewTopLeft =FVector2D(DesiredCenter.X - WidgetAbsoluteSize.X * 0.5f, DesiredCenter.Y - WidgetAbsoluteSize.Y* 0.5f ); ;
-        
-		// 边界检查
-		FVector2D ViewportSize;
-		if (GEngine && GEngine->GameViewport)
-		{
-			GEngine->GameViewport->GetViewportSize(ViewportSize);
-		}
-		else
-		{
-			ViewportSize = FVector2D(1920, 1080);
-		}
-        
-		// 确保Widget不会完全移出屏幕
-		NewTopLeft.X = FMath::Clamp(NewTopLeft.X, 0.0f, ViewportSize.X - WidgetAbsoluteSize.X);
-		NewTopLeft.Y = FMath::Clamp(NewTopLeft.Y, 0.0f, ViewportSize.Y - WidgetAbsoluteSize.Y);
-        
-		// // 计算相对于原始位置的偏移量
-		// FVector2D ParentAbsolutePosition = FVector2D::ZeroVector;
-		// if (InGeometry.GetParentGeometry().IsValid())
+// FReply UDragableUserWidget::NativeOnMouseButtonDown(const FGeometry& InGeometry, const FPointerEvent& InMouseEvent)
 // {
-		// 	ParentAbsolutePosition = InGeometry.GetParentGeometry().GetAbsolutePosition();
+// 	if (bDragable && InMouseEvent.GetEffectingButton() == EKeys::LeftMouseButton)
+// 	{
+// 		if (!bDraging)
+// 		{
+// 			BeginDrag(InGeometry);
+// 			return FReply::Unhandled();
+// 		}
+// 	}
+// 	else
+// 	{
+// 		return Super::NativeOnMouseButtonDown(InGeometry, InMouseEvent);
+// 	}
+// 	return FReply::Unhandled();
 // }
 //
-		FVector2D LocalOffset = NewTopLeft - OriginWidgetScreenPos;
-        
-		// 应用变换
-		FWidgetTransform WidgetTransform = GetRenderTransform();
-		WidgetTransform.Translation = LocalOffset/InGeometry.Scale;
-		SetRenderTransform(WidgetTransform);
-
-		// FString Scale = FString::Printf(TEXT("%.0f"), InGeometry.Scale);
-		// UE_LOG(LogTemp, Warning, TEXT("Mouse: %s, CurrentWidgetScreenPos: %s, WidgetAbsoluteSize: %s NewTopLeft : %s LocalOffset : %s Scale = %s"), 
-		// 	   *MouseScreenPos.ToString(), 
-		// 	   *OriginWidgetScreenPos.ToString(), 
-		// 	   *WidgetAbsoluteSize.ToString(),
-		// 	   *NewTopLeft.ToString(),
-		// 	   *LocalOffset.ToString(),
-		// 	   *Scale
-		// 	   );
-        
-		return FReply::Handled();
-	}
-	else
-		return Super::NativeOnMouseMove(InGeometry, InMouseEvent);
-}
+// FReply UDragableUserWidget::NativeOnMouseButtonUp(const FGeometry& InGeometry, const FPointerEvent& InMouseEvent)
+// {
+// 	return Super::NativeOnMouseButtonUp(InGeometry, InMouseEvent);
+// }
+//
+// FReply UDragableUserWidget::NativeOnMouseMove(const FGeometry& InGeometry, const FPointerEvent& InMouseEvent)
+// {
+// 	if (bDraging)
+// 	{
+// 		Super::NativeOnMouseMove(InGeometry, InMouseEvent);
+//         
+// 		// 获取鼠标在屏幕空间的绝对坐标
+// 		FVector2D MouseScreenPos = InMouseEvent.GetScreenSpacePosition();
+//         
+// 		// 获取Widget在屏幕上的实际渲染尺寸
+// 		
+// 		FVector2D WidgetAbsoluteSize = InGeometry.GetDrawSize();
+//         
+// 		// 计算Widget中心点应对应的屏幕位置
+// 		FVector2D DesiredCenter = MouseScreenPos;
+//         
+// 		// 计算新的左上角位置（让中心点对准鼠标）
+// 		FVector2D NewTopLeft =FVector2D(DesiredCenter.X - WidgetAbsoluteSize.X * 0.5f, DesiredCenter.Y - WidgetAbsoluteSize.Y* 0.5f ); ;
+//         
+// 		// 边界检查
+// 		FVector2D ViewportSize;
+// 		if (GEngine && GEngine->GameViewport)
+// 		{
+// 			GEngine->GameViewport->GetViewportSize(ViewportSize);
+// 		}
+// 		else
+// 		{
+// 			ViewportSize = FVector2D(1920, 1080);
+// 		}
+//         
+// 		// 确保Widget不会完全移出屏幕
+// 		NewTopLeft.X = FMath::Clamp(NewTopLeft.X, 0.0f, ViewportSize.X - WidgetAbsoluteSize.X);
+// 		NewTopLeft.Y = FMath::Clamp(NewTopLeft.Y, 0.0f, ViewportSize.Y - WidgetAbsoluteSize.Y);
+//         
+// 		// // 计算相对于原始位置的偏移量
+// 		// FVector2D ParentAbsolutePosition = FVector2D::ZeroVector;
+// 		// if (InGeometry.GetParentGeometry().IsValid())
+// 		// {
+// 		// 	ParentAbsolutePosition = InGeometry.GetParentGeometry().GetAbsolutePosition();
+// 		// }
+//   //       
+// 		FVector2D LocalOffset = NewTopLeft - OriginWidgetScreenPos;
+//         
+// 		// 应用变换
+// 		FWidgetTransform WidgetTransform = GetRenderTransform();
+// 		WidgetTransform.Translation = LocalOffset/InGeometry.Scale;
+// 		SetRenderTransform(WidgetTransform);
+//
+// 		// FString Scale = FString::Printf(TEXT("%.0f"), InGeometry.Scale);
+// 		// UE_LOG(LogTemp, Warning, TEXT("Mouse: %s, CurrentWidgetScreenPos: %s, WidgetAbsoluteSize: %s NewTopLeft : %s LocalOffset : %s Scale = %s"), 
+// 		// 	   *MouseScreenPos.ToString(), 
+// 		// 	   *OriginWidgetScreenPos.ToString(), 
+// 		// 	   *WidgetAbsoluteSize.ToString(),
+// 		// 	   *NewTopLeft.ToString(),
+// 		// 	   *LocalOffset.ToString(),
+// 		// 	   *Scale
+// 		// 	   );
+//         
+// 		return FReply::Unhandled();
+// 	}
+// 	else
+// 		return Super::NativeOnMouseMove(InGeometry, InMouseEvent);
+// }

ProjectFish/Source/ProjectFish/Widget/DragableUserWidget.h

@@ -22,12 +22,14 @@ public:
 	UFUNCTION(BlueprintCallable, Category = "Dragable Widget")
 	void EndDrag();
 
+	UFUNCTION(BlueprintImplementableEvent, Category = "Dragable Widget")
+	void OnMouseButtonDownWhenDragging(const FPointerEvent& PointerEvent);
 	
-	virtual FReply NativeOnMouseButtonDown( const FGeometry& InGeometry, const FPointerEvent& InMouseEvent ) override; 
-	virtual FReply NativeOnMouseButtonUp( const FGeometry& InGeometry, const FPointerEvent& InMouseEvent ) override;
-	virtual FReply NativeOnMouseMove( const FGeometry& InGeometry, const FPointerEvent& InMouseEvent ) override;
+	// virtual FReply NativeOnMouseButtonDown( const FGeometry& InGeometry, const FPointerEvent& InMouseEvent ) override; 
+	// virtual FReply NativeOnMouseButtonUp( const FGeometry& InGeometry, const FPointerEvent& InMouseEvent ) override;
+	// virtual FReply NativeOnMouseMove( const FGeometry& InGeometry, const FPointerEvent& InMouseEvent ) override;
 protected:
-	UPROPERTY(BlueprintReadWrite, EditAnywhere)
+	UPROPERTY(BlueprintReadWrite, EditAnywhere, meta = (ExposeOnSpawn = true))
 	bool bDragable;
 
 	UPROPERTY(BlueprintReadOnly)