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77 lines
2.8 KiB
C++
77 lines
2.8 KiB
C++
// Copyright 1998-2014 Epic Games, Inc. All Rights Reserved.
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#pragma once
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/**
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* Tools for audio tracks
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*/
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class FAudioTrackEditor : public FMovieSceneTrackEditor
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{
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public:
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/**
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* Constructor
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*
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* @param InSequencer The sequencer instance to be used by this tool
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*/
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FAudioTrackEditor( TSharedRef<ISequencer> InSequencer );
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~FAudioTrackEditor();
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/**
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* Creates an instance of this class. Called by a sequencer
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*
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* @param OwningSequencer The sequencer instance to be used by this tool
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* @return The new instance of this class
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*/
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static TSharedRef<FMovieSceneTrackEditor> CreateTrackEditor( TSharedRef<ISequencer> OwningSequencer );
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/** FMovieSceneTrackEditor Interface */
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virtual bool SupportsType( TSubclassOf<UMovieSceneTrack> Type ) const override;
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virtual TSharedRef<ISequencerSection> MakeSectionInterface( UMovieSceneSection& SectionObject, UMovieSceneTrack* Track ) override;
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virtual bool HandleAssetAdded(UObject* Asset, const FGuid& TargetObjectGuid) override;
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private:
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/** Delegate for AnimatablePropertyChanged in HandleAssetAdded for master sounds */
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void AddNewMasterSound( float KeyTime, class USoundBase* Sound );
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/** Delegate for AnimatablePropertyChanged in HandleAssetAdded for attached sounds */
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void AddNewAttachedSound( float KeyTime, class USoundBase* Sound, TArray<UObject*> ObjectsToAttachTo );
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};
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/** Class for audio sections, handles drawing of all waveform previews */
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class FAudioSection : public ISequencerSection, public TSharedFromThis<FAudioSection>
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{
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public:
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FAudioSection( UMovieSceneSection& InSection, bool bOnAMasterTrack );
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~FAudioSection();
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/** ISequencerSection interface */
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virtual UMovieSceneSection* GetSectionObject() override;
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virtual FText GetDisplayName() const override;
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virtual FText GetSectionTitle() const override;
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virtual float GetSectionHeight() const override;
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virtual void GenerateSectionLayout( class ISectionLayoutBuilder& LayoutBuilder ) const override {}
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virtual int32 OnPaintSection( const FGeometry& AllottedGeometry, const FSlateRect& SectionClippingRect, FSlateWindowElementList& OutDrawElements, int32 LayerId, bool bParentEnabled ) const override;
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virtual void Tick( const FGeometry& AllottedGeometry, const FGeometry& ParentGeometry, const double InCurrentTime, const float InDeltaTime ) override;
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private:
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/* Re-creates the texture used to preview the waveform */
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void RegenerateWaveforms(TRange<float> DrawRange, int32 XOffset, int32 XSize);
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private:
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/** The section we are visualizing */
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UMovieSceneSection& Section;
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/** The waveform thumbnail render object */
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TSharedPtr<class FAudioThumbnail> WaveformThumbnail;
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/** Stored data about the waveform to determine when it is invalidated */
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TRange<float> StoredDrawRange;
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int32 StoredXOffset;
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int32 StoredXSize;
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/** Whether this section is on a master audio track or an attached audio track */
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bool bIsOnAMasterTrack;
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};
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