FMargin UUserWidget::GetFullScreenOffset() const
{
// If the size is zero, and we're not stretched, then use the desired size.
FVector2D FinalSize = FVector2D(ViewportOffsets.Right, ViewportOffsets.Bottom);
if ( FinalSize.IsZero() && !ViewportAnchors.IsStretchedVertical() && !ViewportAnchors.IsStretchedHorizontal() )
{
TSharedPtr<SWidget> CachedWidget = GetCachedWidget();
if ( CachedWidget.IsValid() )
{
FinalSize = CachedWidget->GetDesiredSize();
}
}
return FMargin(ViewportOffsets.Left, ViewportOffsets.Top, FinalSize.X, FinalSize.Y);
}
void UUserWidget::TickActionsAndAnimation(const FGeometry& MyGeometry, float InDeltaTime)
{
if ( IsDesignTime() )
{
return;
}
// Update active movie scenes
for ( UUMGSequencePlayer* Player : ActiveSequencePlayers )
{
Player->Tick(InDeltaTime);
}
const bool bWasPlayingAnimation = IsPlayingAnimation();
// The process of ticking the players above can stop them so we remove them after all players have ticked
for ( UUMGSequencePlayer* StoppedPlayer : StoppedSequencePlayers )
{
ActiveSequencePlayers.RemoveSwap(StoppedPlayer);
}
StoppedSequencePlayers.Empty();
// If we're no longer playing animations invalidate layout so that we recache the volatility of the widget.
if ( bWasPlayingAnimation && IsPlayingAnimation() == false )
{
TSharedPtr<SWidget> CachedWidget = GetCachedWidget();
if ( CachedWidget.IsValid() )
{
CachedWidget->Invalidate(EInvalidateWidget::LayoutAndVolatility);
}
}
UWorld* World = GetWorld();
if ( World )
{
// Update any latent actions we have for this actor
FLatentActionManager& LatentActionManager = World->GetLatentActionManager();
LatentActionManager.ProcessLatentActions(this, InDeltaTime);
}
}
void UUserWidget::PlayAnimation( const UWidgetAnimation* InAnimation, float StartAtTime, int32 NumberOfLoops, EUMGSequencePlayMode::Type PlayMode)
{
if( InAnimation )
{
// @todo UMG sequencer - Restart animations which have had Play called on them?
UUMGSequencePlayer** FoundPlayer = ActiveSequencePlayers.FindByPredicate(
[&](const UUMGSequencePlayer* Player)
{
return Player->GetAnimation() == InAnimation;
});
if( !FoundPlayer )
{
UUMGSequencePlayer* NewPlayer = NewObject<UUMGSequencePlayer>(this);
ActiveSequencePlayers.Add( NewPlayer );
NewPlayer->OnSequenceFinishedPlaying().AddUObject( this, &UUserWidget::OnAnimationFinishedPlaying );
NewPlayer->InitSequencePlayer( *InAnimation, *this );
NewPlayer->Play( StartAtTime, NumberOfLoops, PlayMode );
}
else
{
( *FoundPlayer )->Play( StartAtTime, NumberOfLoops, PlayMode );
}
TSharedPtr<SWidget> CachedWidget = GetCachedWidget();
if ( CachedWidget.IsValid() )
{
CachedWidget->Invalidate(EInvalidateWidget::LayoutAndVolatility);
}
OnAnimationStarted( InAnimation );
}
}
