117 lines
3.8 KiB
C++
117 lines
3.8 KiB
C++
// Fill out your copyright notice in the Description page of Project Settings.
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#include "DragableUserWidget.h"
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#include "Blueprint/WidgetLayoutLibrary.h"
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#include "Components/CanvasPanelSlot.h"
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#include "ProjectFish/Gameplay/Subsystem/UIManagerSubsystem.h"
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void UDragableUserWidget::SetWidgetDragable(bool Dragable)
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{
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bDragable = Dragable;
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}
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void UDragableUserWidget::BeginDrag(const FGeometry& InGeometry)
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{
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bDraging = true;
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//OriginWidgetScreenPos = InGeometry.GetAbsolutePosition();
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UUIManagerSubsystem* UIManager = GetGameInstance()->GetSubsystem<UUIManagerSubsystem>();
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UIManager->AddDragWidget(this);
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}
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void UDragableUserWidget::EndDrag()
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{
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//取消拖拽 不处理点击事件
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bDraging = false;
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UUIManagerSubsystem* UIManager = GetGameInstance()->GetSubsystem<UUIManagerSubsystem>();
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UIManager->RemoveDragWidget();
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}
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// FReply UDragableUserWidget::NativeOnMouseButtonDown(const FGeometry& InGeometry, const FPointerEvent& InMouseEvent)
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// {
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// if (bDragable && InMouseEvent.GetEffectingButton() == EKeys::LeftMouseButton)
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// {
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// if (!bDraging)
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// {
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// BeginDrag(InGeometry);
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// return FReply::Unhandled();
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// }
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// }
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// else
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// {
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// return Super::NativeOnMouseButtonDown(InGeometry, InMouseEvent);
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// }
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// return FReply::Unhandled();
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// }
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//
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// FReply UDragableUserWidget::NativeOnMouseButtonUp(const FGeometry& InGeometry, const FPointerEvent& InMouseEvent)
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// {
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// return Super::NativeOnMouseButtonUp(InGeometry, InMouseEvent);
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// }
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//
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// FReply UDragableUserWidget::NativeOnMouseMove(const FGeometry& InGeometry, const FPointerEvent& InMouseEvent)
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// {
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// if (bDraging)
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// {
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// Super::NativeOnMouseMove(InGeometry, InMouseEvent);
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//
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// // 获取鼠标在屏幕空间的绝对坐标
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// FVector2D MouseScreenPos = InMouseEvent.GetScreenSpacePosition();
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//
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// // 获取Widget在屏幕上的实际渲染尺寸
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//
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// FVector2D WidgetAbsoluteSize = InGeometry.GetDrawSize();
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//
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// // 计算Widget中心点应对应的屏幕位置
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// FVector2D DesiredCenter = MouseScreenPos;
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//
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// // 计算新的左上角位置（让中心点对准鼠标）
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// FVector2D NewTopLeft =FVector2D(DesiredCenter.X - WidgetAbsoluteSize.X * 0.5f, DesiredCenter.Y - WidgetAbsoluteSize.Y* 0.5f ); ;
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//
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// // 边界检查
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// FVector2D ViewportSize;
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// if (GEngine && GEngine->GameViewport)
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// {
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// GEngine->GameViewport->GetViewportSize(ViewportSize);
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// }
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// else
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// {
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// ViewportSize = FVector2D(1920, 1080);
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// }
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//
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// // 确保Widget不会完全移出屏幕
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// NewTopLeft.X = FMath::Clamp(NewTopLeft.X, 0.0f, ViewportSize.X - WidgetAbsoluteSize.X);
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// NewTopLeft.Y = FMath::Clamp(NewTopLeft.Y, 0.0f, ViewportSize.Y - WidgetAbsoluteSize.Y);
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//
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// // // 计算相对于原始位置的偏移量
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// // FVector2D ParentAbsolutePosition = FVector2D::ZeroVector;
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// // if (InGeometry.GetParentGeometry().IsValid())
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// // {
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// // ParentAbsolutePosition = InGeometry.GetParentGeometry().GetAbsolutePosition();
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// // }
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// //
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// FVector2D LocalOffset = NewTopLeft - OriginWidgetScreenPos;
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//
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// // 应用变换
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// FWidgetTransform WidgetTransform = GetRenderTransform();
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// WidgetTransform.Translation = LocalOffset/InGeometry.Scale;
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// SetRenderTransform(WidgetTransform);
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//
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// // FString Scale = FString::Printf(TEXT("%.0f"), InGeometry.Scale);
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// // UE_LOG(LogTemp, Warning, TEXT("Mouse: %s, CurrentWidgetScreenPos: %s, WidgetAbsoluteSize: %s NewTopLeft : %s LocalOffset : %s Scale = %s"),
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// // *MouseScreenPos.ToString(),
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// // *OriginWidgetScreenPos.ToString(),
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// // *WidgetAbsoluteSize.ToString(),
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// // *NewTopLeft.ToString(),
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// // *LocalOffset.ToString(),
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// // *Scale
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// // );
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//
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// return FReply::Unhandled();
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// }
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// else
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// return Super::NativeOnMouseMove(InGeometry, InMouseEvent);
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// }
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