MovieSceneSubTrack.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "Containers/Array.h"
#include "CoreMinimal.h"
#include "CoreTypes.h"
#include "Internationalization/Text.h"
#include "Misc/FrameNumber.h"
#include "Misc/InlineValue.h"
#include "MovieSceneNameableTrack.h"
#include "MovieSceneSection.h"
#include "Templates/SubclassOf.h"
#include "UObject/ObjectMacros.h"
#include "UObject/ObjectPtr.h"
#include "UObject/UObjectGlobals.h"
 
#include "MovieSceneSubTrack.generated.h"
 
class UMovieSceneSequence;
class UMovieSceneSubSection;
class UObject;
struct FMovieSceneSegmentCompilerRules;
 
UCLASS(MinimalAPI)
class UMovieSceneSubTrack
    : public UMovieSceneNameableTrack
{
    GENERATED_BODY()
 
public:
 
    MOVIESCENE_API UMovieSceneSubTrack( const FObjectInitializer& ObjectInitializer );
 
    virtual UMovieSceneSubSection* AddSequence(UMovieSceneSequence* Sequence, FFrameNumber StartTime, int32 Duration) { return AddSequenceOnRow(Sequence, StartTime, Duration, INDEX_NONE); }
 
    MOVIESCENE_API virtual UMovieSceneSubSection* AddSequenceOnRow(UMovieSceneSequence* Sequence, FFrameNumber StartTime, int32 Duration, int32 RowIndex);
 
    MOVIESCENE_API bool ContainsSequence(const UMovieSceneSequence& Sequence, bool Recursively = false, const UMovieSceneSection* SectionToSkip = nullptr) const;
    
    MOVIESCENE_API TArray<UMovieSceneSection*, TInlineAllocator<4>> FindAllSections(FFrameNumber Time) const;
 
    MOVIESCENE_API UMovieSceneSection* FindSection(FFrameNumber Time) const;
    
    MOVIESCENE_API UMovieSceneSection* FindOrExtendSection(FFrameNumber Time, float& OutWeight);
 
    MOVIESCENE_API UMovieSceneSection* FindOrAddSection(FFrameNumber Time, bool& bSectionAdded);
 
public:
 
    // UMovieSceneTrack interface
 
    MOVIESCENE_API virtual void AddSection(UMovieSceneSection& Section) override;
    MOVIESCENE_API virtual bool SupportsType(TSubclassOf<UMovieSceneSection> SectionClass) const override;
    MOVIESCENE_API virtual UMovieSceneSection* CreateNewSection() override;
    MOVIESCENE_API virtual const TArray<UMovieSceneSection*>& GetAllSections() const override;
    MOVIESCENE_API virtual bool HasSection(const UMovieSceneSection& Section) const override;
    MOVIESCENE_API virtual bool IsEmpty() const override;
    MOVIESCENE_API virtual void RemoveAllAnimationData() override;
    MOVIESCENE_API virtual void RemoveSection(UMovieSceneSection& Section) override;
    MOVIESCENE_API virtual void RemoveSectionAt(int32 SectionIndex) override;
    MOVIESCENE_API virtual bool SupportsMultipleRows() const override;
 
#if WITH_EDITORONLY_DATA
    MOVIESCENE_API virtual FText GetDefaultDisplayName() const override;
    virtual UMovieSceneSection* GetSectionToKey() const override { return SectionToKey; }
    MOVIESCENE_API virtual void SetSectionToKey(UMovieSceneSection* Section) override;
#endif
 
protected:
 
    UPROPERTY()
    TArray<TObjectPtr<UMovieSceneSection>> Sections;
 
#if WITH_EDITORONLY_DATA
 
public:
 
    int32 GetRowHeight() const
    {
        return RowHeight;
    }
 
    void SetRowHeight(int32 NewRowHeight)
    {
        RowHeight = FMath::Max(16, NewRowHeight);
    }
 
private:
 
    UPROPERTY()
    int32 RowHeight;
 
    UPROPERTY()
    TObjectPtr<UMovieSceneSection> SectionToKey;
 
#endif
};