void SMenuAnchor::OnArrangeChildren( const FGeometry& AllottedGeometry, FArrangedChildren& ArrangedChildren ) const
{
ArrangeSingleChild( AllottedGeometry, ArrangedChildren, Children[0], FVector2D::UnitVector);
if ( IsOpen() )
{
// @todo umg na AllottedGeometry here is in Window-Space when computed via OnPaint.
// The incorrect geometry causes the popup to fail workspace-edge tests.
const FGeometry PopupGeometry = ComputeMenuPlacement( AllottedGeometry, Children[1].GetWidget()->GetDesiredSize(), Placement.Get() );
ArrangedChildren.AddWidget( FArrangedWidget( Children[1].GetWidget(), PopupGeometry ) );
}
}
void SMenuAnchor::Tick( const FGeometry& AllottedGeometry, const double InCurrentTime, const float InDeltaTime )
{
SPanel::Tick(AllottedGeometry, InCurrentTime, InDeltaTime);
TSharedPtr<SWindow> PopupWindow = PopupWindowPtr.Pin();
if ( PopupWindow.IsValid() && Method == CreateNewWindow )
{
// Figure out where our attached pop-up window should be placed.
const FVector2D PopupContentDesiredSize = PopupWindow->GetContent()->GetDesiredSize();
FGeometry PopupGeometry = ComputeMenuPlacement( AllottedGeometry, PopupContentDesiredSize, Placement.Get( ) );
const FVector2D NewPosition = PopupGeometry.AbsolutePosition;
const FVector2D NewSize = PopupGeometry.GetDrawSize( );
const FSlateRect NewShape = FSlateRect( NewPosition.X, NewPosition.Y, NewPosition.X + NewSize.X, NewPosition.Y + NewSize.Y );
// We made a window for showing the popup.
// Update the window's position!
if( PopupWindow->IsMorphing() )
{
if( NewShape != PopupWindow->GetMorphTargetShape() )
{
// Update the target shape
PopupWindow->UpdateMorphTargetShape( NewShape );
// Set size immediately if not morphing size
if(!PopupWindow->IsMorphingSize())
{
PopupWindow->ReshapeWindow( PopupWindow->GetPositionInScreen(), NewSize );
}
}
}
else
{
const FVector2D WindowPosition = PopupWindow->GetPositionInScreen();
const FVector2D WindowSize = PopupWindow->GetSizeInScreen();
if ( NewPosition != WindowPosition || NewSize != WindowSize )
{
#if PLATFORM_LINUX
// @FIXME: for some reason, popups reshaped here do not trigger OnWindowMoved() callback,
// so we manually set cached position to where we expect it to be. Note the order of operations - (before Reshape) -
// still giving the callback a chance to change it.
// This needs to be investigated (tracked as TTP #347674).
PopupWindow->SetCachedScreenPosition( NewPosition );
#endif // PLATFORM_LINUX
PopupWindow->ReshapeWindow( NewShape );
}
}
}
/** The tick is ending, so the window was not dismissed this tick. */
bDismissedThisTick = false;
}
void SMenuAnchor::Tick( const FGeometry& AllottedGeometry, const double InCurrentTime, const float InDeltaTime )
{
TSharedPtr<SWindow> PopupWindow = PopupWindowPtr.Pin();
if ( PopupWindow.IsValid() && IsOpenViaCreatedWindow() )
{
// Figure out where our attached pop-up window should be placed.
const FVector2D PopupContentDesiredSize = PopupWindow->GetContent()->GetDesiredSize();
FGeometry PopupGeometry = ComputeMenuPlacement( AllottedGeometry, PopupContentDesiredSize, Placement.Get() );
const FVector2D NewPosition = PopupGeometry.LocalToAbsolute(FVector2D::ZeroVector);
// For the CreateWindow case, don't transform the size; it will always use the ApplicationScale
const FVector2D NewSize = PopupGeometry.GetLocalSize();
const FSlateRect NewShape = FSlateRect( NewPosition.X, NewPosition.Y, NewPosition.X + NewSize.X, NewPosition.Y + NewSize.Y );
// We made a window for showing the popup.
// Update the window's position!
if (false /*PopupWindow->IsMorphing()*/ )
{
if( NewShape != PopupWindow->GetMorphTargetShape() )
{
// Update the target shape
PopupWindow->UpdateMorphTargetShape( NewShape );
// Set size immediately if not morphing size
if(!PopupWindow->IsMorphingSize())
{
PopupWindow->ReshapeWindow( PopupWindow->GetPositionInScreen(), NewSize );
}
}
}
else
{
const FVector2D WindowPosition = PopupWindow->GetPositionInScreen();
const FVector2D WindowSize = PopupWindow->GetSizeInScreen();
if ( NewPosition != WindowPosition || NewSize != WindowSize )
{
#if PLATFORM_LINUX
// @FIXME: for some reason, popups reshaped here do not trigger OnWindowMoved() callback,
// so we manually set cached position to where we expect it to be. Note the order of operations - (before Reshape) -
// still giving the callback a chance to change it.
// This needs to be investigated (tracked as TTP #347674).
PopupWindow->SetCachedScreenPosition( NewPosition );
#endif // PLATFORM_LINUX
PopupWindow->ReshapeWindow( NewShape );
}
}
}
else if (PopupWindow.IsValid() && IsOpenAndReusingWindow())
{
// Ideally, do this in OnArrangeChildren(); currently not possible because OnArrangeChildren()
// can be called in DesktopSpace or WindowSpace, and we will not know which version of the Window
// geometry to use. Tick() is always in DesktopSpace, so cache the solution here and just use
// it in OnArrangeChildren().
const FPopupPlacement LocalPlacement(AllottedGeometry, Children[1].GetWidget()->GetDesiredSize(), Placement.Get());
const FSlateRect WindowRectLocalSpace = TransformRect(Inverse(AllottedGeometry.GetAccumulatedLayoutTransform()), PopupWindow->GetClientRectInScreen());
const FVector2D FittedPlacement = ComputePopupFitInRect(
LocalPlacement.AnchorLocalSpace,
FSlateRect(LocalPlacement.LocalPopupOffset, LocalPlacement.LocalPopupOffset + LocalPlacement.LocalPopupSize),
LocalPlacement.Orientation, WindowRectLocalSpace);
LocalPopupPosition = FittedPlacement;
ScreenPopupPosition = AllottedGeometry.GetAccumulatedLayoutTransform().TransformPoint(LocalPopupPosition);
}
/** The tick is ending, so the window was not dismissed this tick. */
bDismissedThisTick = false;
}
