DrawingBoardWidget.h

이 파일의 문서화 페이지로 가기

// Fill out your copyright notice in the Description page of Project Settings.
 
#pragma once
 
#include "CoreMinimal.h"
#include "Blueprint/UserWidget.h"
#include "DrawingBoardWidget.generated.h"
 
UCLASS()
class ONEPIECE_API UDrawingBoardWidget : public UUserWidget
{
    GENERATED_BODY()
    
public:
    UDrawingBoardWidget(const FObjectInitializer& ObjectInitializer);
    virtual void NativeConstruct() override;
    
protected:
    // Objects
    UPROPERTY(VisibleAnywhere, BlueprintReadOnly)
    TObjectPtr<class UTextureRenderTarget2D> RT_Canvas;
    
    // Widgets
    UPROPERTY(BlueprintReadOnly, meta=(BindWidget))
    TObjectPtr<class UOverlay> Overlay_DrawWindow;
    UPROPERTY(BlueprintReadOnly, meta=(BindWidget))
    TObjectPtr<class UImage> Image_Canvas;
    UPROPERTY(BlueprintReadOnly, meta=(BindWidget))
    TObjectPtr<class UImageButton> Button_Clear;
    UPROPERTY(BlueprintReadOnly, meta=(BindWidget))
    TObjectPtr<class UImageButton> Button_Save;
    
    // Values
    UPROPERTY(BlueprintReadOnly)
    FVector2D prevMousePos;
    UPROPERTY(BlueprintReadOnly)
    bool bIsDrawing;
    
    // Mouse Event
    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;
    
private:
    // Close Draw Window
    void CloseDrawWindow();
    
    // Draw Functions
    void DrawLines(FVector2D mousePos, FLinearColor drawColor);
    void DrawPoint(FVector2D mousePos, FLinearColor drawColor);
    FVector2D GetLocalMousePos(FVector2D mousePos);
    
    // Clear Canvas
    UFUNCTION()
    void ClearCanvas();
    // Save Render Target Canvas
    UFUNCTION()
    void SaveCanvas();
    
    bool SaveRenderTargetToPNG(UTextureRenderTarget2D* RenderTarget, const FString& FullFilePath);
};