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98 lines
2.4 KiB
C++
98 lines
2.4 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "Containers/Array.h"
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#include "Containers/ContainerAllocationPolicies.h"
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#include "CoreTypes.h"
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#include "Layout/Geometry.h"
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#include "Layout/SlateRect.h"
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#include "Math/Color.h"
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#include "Templates/SharedPointer.h"
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class FSlateWindowElementList;
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class IKeyArea;
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class UMovieSceneSection;
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class UMovieSceneTrack;
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struct FTimeToPixel;
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namespace UE
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{
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namespace Sequencer
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{
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class FSectionModel;
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}
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}
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struct FKeyAreaElement
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{
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TArray<TSharedRef<IKeyArea>, TInlineAllocator<1>> KeyAreas;
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FGeometry KeyAreaGeometry;
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/** Whether this layout element pertains to one or multiple key areas */
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enum EType { Single, Group };
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EType Type;
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};
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/** Class that wraps up common section painting functionality */
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class SEQUENCER_API FSequencerSectionPainter
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{
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public:
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UE_NONCOPYABLE(FSequencerSectionPainter)
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/** Constructor */
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FSequencerSectionPainter(FSlateWindowElementList& OutDrawElements, const FGeometry& InSectionGeometry, TSharedPtr<UE::Sequencer::FSectionModel> Section);
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/** Virtual destructor */
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virtual ~FSequencerSectionPainter();
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/** Paint the section background with the specified tint override */
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virtual int32 PaintSectionBackground(const FLinearColor& Tint) = 0;
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/** Paint the section background with the tint stored on the track */
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int32 PaintSectionBackground();
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/** Get the track that this painter is painting sections for */
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UMovieSceneTrack* GetTrack() const;
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/** Blend the specified color with the default track color */
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static FLinearColor BlendColor(FLinearColor InColor);
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public:
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/** Get a time-to-pixel converter for the section */
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virtual const FTimeToPixel& GetTimeConverter() const = 0;
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public:
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/** The section we are painting */
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TSharedPtr<UE::Sequencer::FSectionModel> SectionModel;
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/** List of slate draw elements - publicly modifiable */
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FSlateWindowElementList& DrawElements;
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/** The full geometry of the section. This is the width of the track area in the case of infinite sections */
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FGeometry SectionGeometry;
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/** The full clipping rectangle for the section */
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FSlateRect SectionClippingRect;
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/** The layer ID we're painting on */
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int32 LayerId;
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/** Whether our parent widget is enabled or not */
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bool bParentEnabled;
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/** Whether the section is hovered or not */
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bool bIsHighlighted;
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/** Whether the section is selected or not */
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bool bIsSelected;
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/** Whether the section is to be drawn semi-transparent or not */
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float GhostAlpha;
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};
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