100 lines
2.0 KiB
C++
100 lines
2.0 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "Components/Overlay.h"
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#include "Components/OverlaySlot.h"
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#include UE_INLINE_GENERATED_CPP_BY_NAME(Overlay)
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#define LOCTEXT_NAMESPACE "UMG"
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/////////////////////////////////////////////////////
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// UOverlay
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UOverlay::UOverlay(const FObjectInitializer& ObjectInitializer)
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: Super(ObjectInitializer)
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{
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bIsVariable = false;
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SetVisibilityInternal(ESlateVisibility::SelfHitTestInvisible);
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}
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void UOverlay::ReleaseSlateResources(bool bReleaseChildren)
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{
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Super::ReleaseSlateResources(bReleaseChildren);
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MyOverlay.Reset();
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}
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UOverlaySlot* UOverlay::AddChildToOverlay(UWidget* Content)
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{
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return Cast<UOverlaySlot>(Super::AddChild(Content));
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}
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UClass* UOverlay::GetSlotClass() const
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{
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return UOverlaySlot::StaticClass();
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}
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void UOverlay::OnSlotAdded(UPanelSlot* InSlot)
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{
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// Add the child to the live canvas if it already exists
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if ( MyOverlay.IsValid() )
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{
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CastChecked<UOverlaySlot>(InSlot)->BuildSlot(MyOverlay.ToSharedRef());
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}
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}
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void UOverlay::OnSlotRemoved(UPanelSlot* InSlot)
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{
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// Remove the widget from the live slot if it exists.
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if ( MyOverlay.IsValid() && InSlot->Content)
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{
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TSharedPtr<SWidget> Widget = InSlot->Content->GetCachedWidget();
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if ( Widget.IsValid() )
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{
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MyOverlay->RemoveSlot(Widget.ToSharedRef());
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}
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}
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}
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bool UOverlay::ReplaceOverlayChildAt(int32 Index, UWidget* Content)
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{
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if (!Slots.IsValidIndex(Index) || Content == nullptr)
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{
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return false;
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}
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UOverlaySlot* OverlaySlot = CastChecked<UOverlaySlot>(Slots[Index]);
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OverlaySlot->ReplaceContent(Content);
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return true;
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}
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TSharedRef<SWidget> UOverlay::RebuildWidget()
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{
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MyOverlay = SNew(SOverlay);
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for ( UPanelSlot* PanelSlot : Slots )
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{
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if ( UOverlaySlot* TypedSlot = Cast<UOverlaySlot>(PanelSlot) )
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{
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TypedSlot->Parent = this;
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TypedSlot->BuildSlot(MyOverlay.ToSharedRef());
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}
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}
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return MyOverlay.ToSharedRef();
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}
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#if WITH_EDITOR
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const FText UOverlay::GetPaletteCategory()
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{
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return LOCTEXT("Panel", "Panel");
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}
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#endif
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/////////////////////////////////////////////////////
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#undef LOCTEXT_NAMESPACE
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