FReply STrack::OnMouseButtonUp( const FGeometry& MyGeometry, const FPointerEvent& MouseEvent )
{
bool bLeftMouseButton = MouseEvent.GetEffectingButton() == EKeys::LeftMouseButton;
bool bRightMouseButton = MouseEvent.GetEffectingButton() == EKeys::RightMouseButton;
if ( bRightMouseButton )
{
TSharedPtr<SWidget> WidgetToFocus;
WidgetToFocus = SummonContextMenu(MyGeometry, MouseEvent);
return (WidgetToFocus.IsValid())
? FReply::Handled().ReleaseMouseCapture().SetUserFocus( WidgetToFocus.ToSharedRef(), EFocusCause::SetDirectly )
: FReply::Handled().ReleaseMouseCapture();
}
else if ( bLeftMouseButton )
{
float SnapPos = 0.f;
if ( GetDraggableBarSnapPosition(MyGeometry, SnapPos) )
{
// Final update on draggable bar to snap position
OnBarDrag.Execute(DraggableBarIndex, SnapPos);
}
if(bDraggingBar)
{
OnBarDrop.Execute(DraggableBarIndex);
OnBarClicked.ExecuteIfBound(DraggableBarIndex);
}
/** Bar dragging */
DraggableBarIndex = INDEX_NONE;
bDraggingBar = false;
}
return FReply::Unhandled();
}
int32 STrack::OnPaint( const FGeometry& AllottedGeometry, const FSlateRect& MyClippingRect, FSlateWindowElementList& OutDrawElements, int32 LayerId, const FWidgetStyle& InWidgetStyle, bool bParentEnabled ) const
{
int32 CustomLayerId = LayerId + 1;
FPaintGeometry MyGeometry = AllottedGeometry.ToPaintGeometry();
// Background
FSlateDrawElement::MakeBox(
OutDrawElements,
CustomLayerId++,
MyGeometry,
FEditorStyle::GetBrush(TEXT( "Persona.NotifyEditor.NotifyTrackBackground" )),
MyClippingRect,
ESlateDrawEffect::None,
TrackColor.Get()
);
// Draw Scrub Position
if ( ScrubPosition.Get() >= 0.f )
{
float XPos = DataToLocalX(ScrubPosition.Get(), AllottedGeometry);
TArray<FVector2D> LinePoints;
LinePoints.Add(FVector2D(XPos, 0.f));
LinePoints.Add(FVector2D(XPos, AllottedGeometry.Size.Y));
FSlateDrawElement::MakeLines(
OutDrawElements,
CustomLayerId++,
MyGeometry,
LinePoints,
MyClippingRect,
ESlateDrawEffect::None,
FLinearColor(1, 0, 0)
);
}
// Draggable Bars
for ( int32 I=0; DraggableBars.IsBound() && I < DraggableBars.Get().Num(); I++ )
{
// Draw lines
float XPos = DataToLocalX(DraggableBars.Get()[I], AllottedGeometry);
TArray<FVector2D> LinePoints;
LinePoints.Add(FVector2D(XPos, 0.f));
LinePoints.Add(FVector2D(XPos, AllottedGeometry.Size.Y));
FSlateDrawElement::MakeLines(
OutDrawElements,
CustomLayerId,
MyGeometry,
LinePoints,
MyClippingRect,
ESlateDrawEffect::None,
FLinearColor(0.0f, 1.0f, 0.0f, 1.0f)
);
// Draw Labels
if (DraggableBarLabels.IsBound() && DraggableBarLabels.Get().IsValidIndex(I))
{
//float EndPos = (DraggableBarIndex.Get().IsValidIndex(I+1) ? DraggableBarIndex.Get()(I+1)
FPaintGeometry TextGeometry = AllottedGeometry.ToPaintGeometry( FVector2D(XPos + 5.f, 5.f), AllottedGeometry.GetDrawSize() );
FSlateDrawElement::MakeText(
OutDrawElements,
CustomLayerId,
TextGeometry,
DraggableBarLabels.Get()[I],
Font,
MyClippingRect,
ESlateDrawEffect::None,
FLinearColor::Black
);
}
}
// Ghost snap position
float SnapPos = 0.f;
if ( GetDraggableBarSnapPosition(AllottedGeometry, SnapPos) )
{
SnapPos = DataToLocalX(SnapPos, AllottedGeometry);
TArray<FVector2D> LinePoints;
LinePoints.Add(FVector2D(SnapPos, 0.f));
LinePoints.Add(FVector2D(SnapPos, AllottedGeometry.Size.Y));
FSlateDrawElement::MakeLines(
OutDrawElements,
CustomLayerId,
MyGeometry,
LinePoints,
MyClippingRect,
ESlateDrawEffect::None,
FLinearColor(0.5f, 0.0f, 0.0f, 0.5f)
);
}
CustomLayerId++;
// draw line for every 1/4 length
if ( TrackMaxValue.Get() > 0.f && TrackNumDiscreteValues.Get() > 0 )
{
int32 Divider = SScrubWidget::GetDivider( ViewInputMin.Get(), ViewInputMax.Get(), AllottedGeometry.Size, TrackMaxValue.Get(), TrackNumDiscreteValues.Get());
const float TimePerValue = TrackMaxValue.Get()/static_cast<float>(TrackNumDiscreteValues.Get());
for (int I=1; I<TrackNumDiscreteValues.Get(); ++I)
{
if ( I % Divider == 0 )
{
float XPos = DataToLocalX(TimePerValue*I, AllottedGeometry);
TArray<FVector2D> LinePoints;
LinePoints.Add(FVector2D(XPos, 0.f));
LinePoints.Add(FVector2D(XPos, AllottedGeometry.Size.Y));
FSlateDrawElement::MakeLines(
OutDrawElements,
CustomLayerId,
MyGeometry,
LinePoints,
MyClippingRect,
ESlateDrawEffect::None,
FLinearColor::Black
);
}
}
++CustomLayerId;
}
return SPanel::OnPaint( AllottedGeometry, MyClippingRect, OutDrawElements, CustomLayerId, InWidgetStyle, bParentEnabled );
}
