87 lines
4.1 KiB
C++
87 lines
4.1 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "CoreMinimal.h"
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#include "SlateGlobals.h"
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#include "Widgets/SWidget.h"
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#include "Framework/Text/IRun.h"
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#include "Framework/Text/TextLayout.h"
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#include "Framework/Text/ILayoutBlock.h"
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#include "Framework/Text/ISlateRun.h"
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class FArrangedChildren;
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class FPaintArgs;
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class FSlateWindowElementList;
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struct FTextBlockStyle;
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enum class ETextHitPoint : uint8;
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#if WITH_FANCY_TEXT
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class FSlateWidgetRun : public ISlateRun, public TSharedFromThis< FSlateWidgetRun >
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{
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public:
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struct FWidgetRunInfo
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{
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TSharedRef< SWidget > Widget;
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TAttribute< int16 > Baseline;
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TOptional< FVector2D > Size;
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FWidgetRunInfo( const TSharedRef< SWidget >& InWidget, const TAttribute< int16 >& InBaseline, TOptional< FVector2D > InSize = TOptional< FVector2D >() )
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: Widget( InWidget )
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, Baseline( InBaseline )
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, Size( InSize )
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{
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}
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};
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static SLATE_API TSharedRef< FSlateWidgetRun > Create(const TSharedRef<class FTextLayout>& TextLayout, const FRunInfo& InRunInfo, const TSharedRef< const FString >& InText, const FWidgetRunInfo& InWidgetInfo);
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static SLATE_API TSharedRef< FSlateWidgetRun > Create(const TSharedRef<class FTextLayout>& TextLayout, const FRunInfo& InRunInfo, const TSharedRef< const FString >& InText, const FWidgetRunInfo& InWidgetInfo, const FTextRange& InRange);
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virtual ~FSlateWidgetRun() {}
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SLATE_API virtual FTextRange GetTextRange() const override;
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SLATE_API virtual void SetTextRange( const FTextRange& Value ) override;
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SLATE_API virtual int16 GetBaseLine( float Scale ) const override;
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SLATE_API virtual int16 GetMaxHeight( float Scale ) const override;
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SLATE_API virtual FVector2D Measure( int32 StartIndex, int32 EndIndex, float Scale, const FRunTextContext& TextContext ) const override;
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SLATE_API virtual int8 GetKerning(int32 CurrentIndex, float Scale, const FRunTextContext& TextContext) const override;
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SLATE_API virtual TSharedRef< ILayoutBlock > CreateBlock( int32 StartIndex, int32 EndIndex, FVector2D Size, const FLayoutBlockTextContext& TextContext, const TSharedPtr< IRunRenderer >& Renderer ) override;
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SLATE_API virtual int32 OnPaint(const FPaintArgs& PaintArgs, const FTextArgs& TextArgs, const FGeometry& AllottedGeometry, const FSlateRect& MyCullingRect, FSlateWindowElementList& OutDrawElements, int32 LayerId, const FWidgetStyle& InWidgetStyle, bool bParentEnabled) const override;
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SLATE_API virtual const TArray< TSharedRef<SWidget> >& GetChildren() override;
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SLATE_API virtual void ArrangeChildren( const TSharedRef< ILayoutBlock >& Block, const FGeometry& AllottedGeometry, FArrangedChildren& ArrangedChildren ) const override;
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SLATE_API virtual int32 GetTextIndexAt( const TSharedRef< ILayoutBlock >& Block, const FVector2D& Location, float Scale, ETextHitPoint* const OutHitPoint = nullptr ) const override;
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SLATE_API virtual FVector2D GetLocationAt( const TSharedRef< ILayoutBlock >& Block, int32 Offset, float Scale ) const override;
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virtual void BeginLayout() override {}
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virtual void EndLayout() override {}
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SLATE_API virtual void Move(const TSharedRef<FString>& NewText, const FTextRange& NewRange) override;
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SLATE_API virtual TSharedRef<IRun> Clone() const override;
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SLATE_API virtual void AppendTextTo(FString& Text) const override;
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SLATE_API virtual void AppendTextTo(FString& AppendToText, const FTextRange& PartialRange) const override;
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SLATE_API virtual const FRunInfo& GetRunInfo() const override;
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SLATE_API virtual ERunAttributes GetRunAttributes() const override;
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protected:
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SLATE_API FSlateWidgetRun(const TSharedRef<class FTextLayout>& TextLayout, const FRunInfo& InRunInfo, const TSharedRef< const FString >& InText, const FWidgetRunInfo& InWidgetInfo);
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SLATE_API FSlateWidgetRun(const TSharedRef<class FTextLayout>& TextLayout, const FRunInfo& InRunInfo, const TSharedRef< const FString >& InText, const FWidgetRunInfo& InWidgetInfo, const FTextRange& InRange);
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SLATE_API FSlateWidgetRun( const FSlateWidgetRun& Run );
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private:
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TWeakPtr<class FTextLayout> TextLayout;
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FRunInfo RunInfo;
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TSharedRef< const FString > Text;
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FTextRange Range;
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FWidgetRunInfo Info;
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TArray< TSharedRef<SWidget> > Children;
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mutable FVector2D WidgetSize;
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};
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#endif //WITH_FANCY_TEXT
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