コード例 #1
0
void SFlipbookTimeline::CheckForRebuild(bool bRebuildAll)
{
	UPaperFlipbook* Flipbook = FlipbookBeingEdited.Get();

	const int32 NewNumKeyframes = (Flipbook != nullptr) ? Flipbook->GetNumKeyFrames() : 0;
	if ((NewNumKeyframes != NumKeyFramesFromLastRebuild) || bRebuildAll)
	{
		NumKeyFramesFromLastRebuild = NewNumKeyframes;
		TimelineTrack->Rebuild();
	}

	const int32 NewNumFrames = (Flipbook != nullptr) ? Flipbook->GetNumFrames() : 0;
	if ((NewNumFrames != NumFramesFromLastRebuild) || bRebuildAll)
	{
		NumFramesFromLastRebuild = NewNumFrames;
		TimelineHeader->Rebuild();
		RebuildPerFrameBG();
	}
}
コード例 #2
0
void SFlipbookTimeline::Construct(const FArguments& InArgs, TSharedPtr<FUICommandList> InCommandList)
{
	FlipbookBeingEdited = InArgs._FlipbookBeingEdited;
	PlayTime = InArgs._PlayTime;
	OnSelectionChanged = InArgs._OnSelectionChanged;
	CommandList = InCommandList;

	SlateUnitsPerFrame = 120.0f;

	BackgroundPerFrameSlices = SNew(SHorizontalBox);

	TimelineHeader = SNew(STimelineHeader)
		.SlateUnitsPerFrame(this, &SFlipbookTimeline::GetSlateUnitsPerFrame)
		.FlipbookBeingEdited(FlipbookBeingEdited)
		.PlayTime(PlayTime);

	TimelineTrack = SNew(SFlipbookTimelineTrack, CommandList)
		.SlateUnitsPerFrame(this, &SFlipbookTimeline::GetSlateUnitsPerFrame)
		.FlipbookBeingEdited(FlipbookBeingEdited)
		.OnSelectionChanged(OnSelectionChanged);

	ChildSlot
	[
		SNew(SBorder)
		.BorderImage( FEditorStyle::GetBrush("ToolPanel.GroupBorder") )
		[
			SNew(SScrollBox)
			.Orientation(Orient_Horizontal)
			.ScrollBarAlwaysVisible(true)
			+SScrollBox::Slot()
			[
				SNew(SOverlay)

				// Per-frame background
				+SOverlay::Slot()
				.VAlign(VAlign_Fill)
				[
					BackgroundPerFrameSlices.ToSharedRef()
				]

				// Flipbook header and track
				+SOverlay::Slot()
				[
					SNew(SVerticalBox)
		
					+SVerticalBox::Slot()
					.AutoHeight()
					.Padding(0,0,0,2)
					[
						TimelineHeader.ToSharedRef()
					]

					+SVerticalBox::Slot()
					.AutoHeight()
					[
						SNew(SBox)
						.HeightOverride(FFlipbookUIConstants::FrameHeight)
						[
							TimelineTrack.ToSharedRef()
						]
					]
				]

				// Empty flipbook instructions
				+ SOverlay::Slot()
				.VAlign(VAlign_Center)
				.HAlign(HAlign_Center)
				[
					SNew(STextBlock)
					.Visibility(this, &SFlipbookTimeline::NoFramesWarningVisibility)
					.Text(LOCTEXT("EmptyTimelineInstruction", "Right-click here or drop in sprites to add key frames"))
				]
			]
		]
	];

	UPaperFlipbook* Flipbook = FlipbookBeingEdited.Get();
	NumKeyFramesFromLastRebuild = (Flipbook != nullptr) ? Flipbook->GetNumKeyFrames() : 0;
	NumFramesFromLastRebuild = (Flipbook != nullptr) ? Flipbook->GetNumFrames() : 0;
	RebuildPerFrameBG();
}