SGameMenuItemWidget.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "Delegates/Delegate.h"
#include "Internationalization/Text.h"
#include "Layout/Visibility.h"
#include "Styling/ISlateStyle.h"
#include "Styling/SlateColor.h"
#include "Styling/SlateWidgetStyleAsset.h"
#include "Input/Reply.h"
#include "Widgets/DeclarativeSyntaxSupport.h"
#include "Widgets/SCompoundWidget.h"
#include "Framework/SlateDelegates.h"
#include "GameFramework/PlayerController.h"
#include "GameMenuWidgetStyle.h"
 
struct FGeometry;
struct FPointerEvent;
 
// Menu item widget
class GAMEMENUBUILDER_API SGameMenuItemWidget : public SCompoundWidget
{
public:
    DECLARE_DELEGATE_OneParam( FOnArrowPressed, int );
 
    SLATE_BEGIN_ARGS(SGameMenuItemWidget)
    {}
 
    SLATE_STYLE_ARGUMENT(FGameMenuStyle, MenuStyle)
 
    
    SLATE_ARGUMENT(TWeakObjectPtr<APlayerController>, PCOwner)
 
    
    SLATE_EVENT(FOnClicked, OnClicked)
 
    
    SLATE_EVENT(FOnArrowPressed, OnArrowPressed)
 
    
    SLATE_ATTRIBUTE(FText, Text)
 
    
    SLATE_ARGUMENT(bool, bIsMultichoice)
 
    
    SLATE_ATTRIBUTE(FText, OptionText)
 
    
    SLATE_ARGUMENT(TOptional<float>, InactiveTextAlpha)
 
    
    SLATE_END_ARGS()
 
    
    void Construct(const FArguments& InArgs);
 
    //~ Begin SWidget Interface
    virtual bool SupportsKeyboardFocus() const override { return true; }
    
    virtual FReply OnMouseButtonDown(const FGeometry& MyGeometry, const FPointerEvent& MouseEvent) override;
 
    virtual FReply OnMouseButtonUp(const FGeometry& MyGeometry, const FPointerEvent& MouseEvent) override;
 
    virtual FReply OnMouseMove(const FGeometry& MyGeometry, const FPointerEvent& MouseEvent) override;
    //~ End SWidget Interface
 
    void SetMenuItemActive(bool bIsMenuItemActive);
 
    EVisibility LeftArrowVisible;
 
    EVisibility RightArrowVisible;
 
    void SetMenuOwner(TWeakObjectPtr<class APlayerController> InPCOwner);
    
    void SetMenuStyle(const FGameMenuStyle* InMenuStyle);
 
    void SetClickedDelegate(FOnClicked InOnClicked);
 
    void SetArrowPressedDelegate(FOnArrowPressed InOnArrowPressed);
 
protected:
    FOnClicked OnClicked;
 
    FOnArrowPressed OnArrowPressed;
 
    TAttribute< FText > Text;
 
    TAttribute< FText > OptionText;
 
    float InactiveTextAlpha;
 
    bool bIsActiveMenuItem;
 
    bool bIsMultichoice;
 
    TWeakObjectPtr<class APlayerController> PCOwner;
 
    /* The Style of the menu. */
    const FGameMenuStyle* MenuStyle;
 
private:
    
    FSlateColor GetButtonBgColor() const;
 
    FSlateColor GetButtonTextColor() const;
 
    EVisibility GetLeftArrowVisibility() const;
 
    EVisibility GetRightArrowVisibility() const;
 
    FReply OnRightArrowDown(const FGeometry& MyGeometry, const FPointerEvent& MouseEvent);
 
    FReply OnLeftArrowDown(const FGeometry& MyGeometry, const FPointerEvent& MouseEvent);
 
};