SCarouselNavigationBar.h

Go to the documentation of this file.

// Copyright Epic Games, Inc. All Rights Reserved.
#pragma once
 
#include "CoreMinimal.h"
#include "Misc/Attribute.h"
#include "Styling/SlateWidgetStyleAsset.h"
#include "Input/Reply.h"
#include "Widgets/DeclarativeSyntaxSupport.h"
#include "Widgets/SCompoundWidget.h"
#include "WidgetCarouselStyle.h"
 
#define LOCTEXT_NAMESPACE "WidgetCarousel"
 
class SHorizontalBox;
 
class SCarouselNavigationBar : public SCompoundWidget
{
    DECLARE_DELEGATE_OneParam(FOnSelectedIndexChanged, int32)
 
public:
    SLATE_BEGIN_ARGS(SCarouselNavigationBar)
        : _Style() 
        , _OnSelectedIndexChanged()
        , _ItemCount(0)
        , _CurrentItemIndex(0)
        , _CurrentSlideAmount(0.0f)
        
    {}
 
        SLATE_STYLE_ARGUMENT(FWidgetCarouselNavigationBarStyle, Style)
 
        
        SLATE_EVENT(FOnSelectedIndexChanged, OnSelectedIndexChanged)
 
        
        SLATE_ARGUMENT(int32, ItemCount)
 
        
        SLATE_ATTRIBUTE(int32, CurrentItemIndex)
 
        
        SLATE_ATTRIBUTE(float, CurrentSlideAmount)
 
    SLATE_END_ARGS()
 
    WIDGETCAROUSEL_API int32 GetItemCount();
 
    WIDGETCAROUSEL_API void SetItemCount(int32 InItemCount);
 
    WIDGETCAROUSEL_API void Construct(const FArguments& InArgs);
 
private:
    void BuildScrollBar();
 
    FReply HandleItemButtonClicked(int32 ItemIndex);
 
    FVector2D GetPlaceHolderPosition() const;
 
private:
    const FWidgetCarouselNavigationBarStyle* Style;
    TSharedPtr<SHorizontalBox> WidgetScrollBox;
    FOnSelectedIndexChanged OnSelectedIndexChanged;
    int32 ItemCount;
    TAttribute<int32> CurrentItemIndex;
    TAttribute<float> CurrentSlideAmount;
};
 
#undef LOCTEXT_NAMESPACE