137 lines
3.8 KiB
C++
137 lines
3.8 KiB
C++
////////////////////////////////////////////////////////////
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//
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// RootCanvas.cpp
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//
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////////////////////////////////////////////////////////////
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#include "RootCanvas.h"
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#include "Common.h"
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#include "Blueprint/UserWidget.h"
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UlxRootCanvasSlot::UlxRootCanvasSlot(const FObjectInitializer& ObjectInitializer)
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: Super(ObjectInitializer)
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{
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// Children of the root canvas default to filling the parent,
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// matching the viewport's "stretch" behavior. Individual widgets
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// can still override anchors/offsets after being added.
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SetAnchors(FAnchors(0.0f, 0.0f, 1.0f, 1.0f));
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SetOffsets(FMargin(0.0f, 0.0f, 0.0f, 0.0f));
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}
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UClass* UlxRootCanvasPanel::GetSlotClass() const
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{
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return UlxRootCanvasSlot::StaticClass();
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}
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UlxRootCanvasSlot *UlxRootCanvasPanel::GetRootCanvasSlot(UUserWidget *Widget, ElxSuccessOrWrongType &Result)
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{
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if (IsValid(Widget))
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{
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if (UlxRootCanvasSlot *Slot = Cast<UlxRootCanvasSlot>(Widget->Slot))
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{
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Result = ElxSuccessOrWrongType::Success;
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return Slot;
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}
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}
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Result = ElxSuccessOrWrongType::WrongType;
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return nullptr;
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}
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UlxRootCanvasSlot* UlxRootCanvasPanel::AddChildToRootCanvas(UWidget* Content)
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{
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return Cast<UlxRootCanvasSlot>(Super::AddChild(Content));
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}
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void UlxRootCanvasPanel::OnSlotAdded(UPanelSlot* InSlot)
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{
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UlxRootCanvasSlot *Slot = CastChecked<UlxRootCanvasSlot>(InSlot);
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Slot->BringToFrontCount = ++BringToFrontCounter;
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Super::OnSlotAdded(InSlot);
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}
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UlxRootCanvasSlot* UlxRootCanvasPanel::GetTopWidget()
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{
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UlxRootCanvasSlot* Top = nullptr;
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for (UPanelSlot* PanelSlot : Slots)
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{
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UlxRootCanvasSlot* Slot = CastChecked<UlxRootCanvasSlot>(PanelSlot);
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if (Cast<UUserWidget>(Slot->Content) == nullptr) continue;
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if ((Top == nullptr) || (*Top < *Slot)) Top = Slot;
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}
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return Top;
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}
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TArray<UlxRootCanvasSlot*> UlxRootCanvasPanel::GetSortedUserWidgets()
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{
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TArray<UlxRootCanvasSlot*> Result;
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Result.Reserve(Slots.Num());
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for (UPanelSlot *PanelSlot : Slots)
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{
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UlxRootCanvasSlot *TypedSlot = Cast<UlxRootCanvasSlot>(PanelSlot);
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check(TypedSlot);
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if (Cast<UUserWidget>(TypedSlot->Content) == nullptr) continue;
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Result.Add(TypedSlot);
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}
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Result.StableSort([](const UlxRootCanvasSlot &A, const UlxRootCanvasSlot &B)
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{
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return A < B;
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});
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return Result;
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}
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void UlxRootCanvasPanel::UpdateZOrders()
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{
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for (UPanelSlot *PanelSlot : Slots)
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{
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UlxRootCanvasSlot *Slot = Cast<UlxRootCanvasSlot>(PanelSlot);
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check(Slot);
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int32 ZOrder = (Slot->ShowPointer ? 1000000 : 0) + Slot->BringToFrontCount;
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Slot->SetZOrder(ZOrder);
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}
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}
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void UlxRootCanvasPanel::BringToFront(UUserWidget *Widget)
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{
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if (!IsValid(Widget)) return;
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UlxRootCanvasSlot *Slot = Cast<UlxRootCanvasSlot>(Widget->Slot);
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if (!Slot) return;
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UlxRootCanvasPanel *Panel = Cast<UlxRootCanvasPanel>(Slot->Parent);
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if (!Panel) return;
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Slot->BringToFrontCount = ++Panel->BringToFrontCounter;
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}
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void UlxRootCanvasPanel::SetWidgetWindowManagement(class UUserWidget *Widget,
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bool ShowPointer, bool BlockInput, bool EnableEnhancedInput, bool BringToFront, UWidget *DesiredFocusWidget)
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{
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if (!IsValid(Widget))
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{
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UE_LOG(LogLuprexIntegration, Error, TEXT("ManageRootWidget called with an invalid widget."));
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return;
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}
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UlxRootCanvasSlot *Slot = Cast<UlxRootCanvasSlot>(Widget->Slot);
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if (Slot == nullptr)
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{
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UE_LOG(LogLuprexIntegration, Error, TEXT("Widget is not yet a root widget, use 'AddWidgetToRoot' first"));
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return;
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}
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UlxRootCanvasPanel *Panel = Cast<UlxRootCanvasPanel>(Slot->Parent);
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check(Panel);
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Slot->ShowPointer = ShowPointer;
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Slot->BlockInput = BlockInput;
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Slot->EnableEnhancedInput = EnableEnhancedInput;
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if (DesiredFocusWidget)
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{
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if (!Widget->SetDesiredFocusWidget(DesiredFocusWidget))
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UE_LOG(LogLuprexIntegration, Error, TEXT("SetWidgetWindowManagement: focus widget must be a child of widget"));
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}
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else
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{
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Widget->SetDesiredFocusWidget(NAME_None);
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}
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if (BringToFront) Slot->BringToFrontCount = ++Panel->BringToFrontCounter;
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}
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