Added Tobii from 4.23 + updated

Source/TobiiGTOM/Private/GTOMAwareUI/TobiiGazeFocusableWidget.cpp

@@ -0,0 +1,223 @@
+/******************************************************************************
+* Copyright 2017- Tobii Technology AB. All rights reserved.
+*
+* @author Temaran | Fredrik Lindh | fredrik.lindh@tobii.com | https://github.com/Temaran
+******************************************************************************/
+
+#include "TobiiGazeFocusableWidget.h"
+#include "TobiiGTOMBlueprintLibrary.h"
+
+#include "Components/SizeBoxSlot.h"
+
+#define LOCTEXT_NAMESPACE "UMG"
+
+static TMap<FTobiiFocusableUID, TWeakObjectPtr<UTobiiGazeFocusableWidget>> GRegisteredTobiiScreenSpaceFocusableWidgets;
+
+UTobiiGazeFocusableWidget::UTobiiGazeFocusableWidget(const FObjectInitializer& ObjectInitializer)
+	: Super(ObjectInitializer)
+
+	, OnHovered()
+	, OnUnhovered()
+
+	, bHasGazeFocus(false)
+	, bIsGazeFocusable(true)
+	, GazeFocusPriority(0.0f)
+	, MaxFocusDistance(-1.0f)
+	, FocusLayer("")
+	, ReceivedGazeFocus()
+	, LostGazeFocus()
+
+	, CleanUIMode(ETobiiCleanUIMode::Disabled)
+	, TimeCleanUIIsSuppressedForSecs(0.0f)
+	, CleanUIFadeInTimeSecsOverride(-1.0f)
+	, CleanUIFadeOutTimeSecsOverride(-1.0f)
+	, CleanUIMinAlphaOverride(-1.0f)
+	, CleanUIMaxAlphaOverride(-1.0f)
+	, bTriggerCleanUIOnMouseOver(false)
+
+	, WorldSpaceHostWidgetComponent()
+	, MySlateWidget()
+{
+	Visibility = ESlateVisibility::Visible;
+	bIsVariable = true;
+}
+
+void UTobiiGazeFocusableWidget::ReleaseSlateResources(bool bReleaseChildren)
+{
+	Super::ReleaseSlateResources(bReleaseChildren);
+
+	MySlateWidget.Reset();
+}
+
+TSharedRef<SWidget> UTobiiGazeFocusableWidget::RebuildWidget()
+{
+	MySizeBox = MySlateWidget = SNew(STobiiGazeFocusableWidget)
+		.OnHovered_UObject(this, &ThisClass::SlateHandleHovered)
+		.OnUnhovered_UObject(this, &ThisClass::SlateHandleUnhovered);
+
+	MySlateWidget->UMGWidget = this;
+
+	if (GetChildrenCount() > 0)
+	{
+		Cast<USizeBoxSlot>(GetContentSlot())->BuildSlot(MySizeBox.ToSharedRef());
+	}
+	 
+	return MySizeBox.ToSharedRef();
+}
+
+bool UTobiiGazeFocusableWidget::IsHoveredByPointer()
+{
+	if (MySlateWidget.IsValid())
+	{
+		return MySlateWidget->IsHoveredByPointer();
+	}
+
+	return false;
+}
+
+void UTobiiGazeFocusableWidget::RegisterWidgetToGTOM(UWidgetComponent* HostWidget)
+{
+	if (HostWidget != nullptr)
+	{
+		WorldSpaceHostWidgetComponent = HostWidget;
+	}
+	else
+	{
+		uint32 Uid = GetUniqueID();
+		if (GRegisteredTobiiScreenSpaceFocusableWidgets.Contains(Uid))
+		{
+			//Overwrite
+			GRegisteredTobiiScreenSpaceFocusableWidgets[Uid] = this;
+		}
+		else
+		{
+			GRegisteredTobiiScreenSpaceFocusableWidgets.Add(Uid, this);
+		}
+	}
+}
+
+bool UTobiiGazeFocusableWidget::IsWorldSpaceWidget()
+{
+	return WorldSpaceHostWidgetComponent.IsValid();
+}
+
+UWidgetComponent* UTobiiGazeFocusableWidget::GetWorldSpaceHostWidgetComponent()
+{
+	return WorldSpaceHostWidgetComponent.IsValid() ? WorldSpaceHostWidgetComponent.Get() : nullptr;
+}
+
+bool UTobiiGazeFocusableWidget::HasFocus()
+{
+	FTobiiGazeFocusData FocusData;
+	return UTobiiGTOMBlueprintLibrary::GetGazeFocusData(FocusData) && FocusData.FocusedWidget == this;
+}
+
+bool UTobiiGazeFocusableWidget::IsInFocusCollection()
+{
+	TArray<FTobiiGazeFocusData> AllFocusData;
+	if (UTobiiGTOMBlueprintLibrary::GetAllGazeFocusData(AllFocusData))
+	{
+		for (const FTobiiGazeFocusData& FocusData : AllFocusData)
+		{
+			if (FocusData.FocusedWidget == this)
+			{
+				return true;
+			}
+		}
+	}
+
+	return false;
+}
+
+float UTobiiGazeFocusableWidget::GetCleanUIAlpha()
+{
+	if (MySlateWidget.IsValid())
+	{
+		return MySlateWidget->GetCleanUIAlpha();
+	}
+
+	return 1.0f;
+}
+
+void UTobiiGazeFocusableWidget::AddGazeFocusableWidgetToPollHitsFrom(UTobiiGazeFocusableWidget* GazeFocusableWidgetToPoll, bool PollGazeHits /*= true*/, bool PollMouseHits /*= true*/)
+{
+	if (GazeFocusableWidgetToPoll != nullptr)
+	{
+		STobiiGazeFocusableWidget* SlateCleanUIContainerToPoll = GazeFocusableWidgetToPoll->GetSlateGazeFocusableWidget();
+		if (SlateCleanUIContainerToPoll != nullptr && MySlateWidget.IsValid())
+		{
+			MySlateWidget->AddExtraCleanUIContainerToPollHitsFrom(SlateCleanUIContainerToPoll, PollGazeHits, PollMouseHits);
+		}
+	}
+}
+
+void UTobiiGazeFocusableWidget::RemoveGazeFocusableWidgetToPollHitsFrom(UTobiiGazeFocusableWidget* GazeFocusableWidgetToStopPolling)
+{
+	if (GazeFocusableWidgetToStopPolling != nullptr)
+	{
+		STobiiGazeFocusableWidget* SlateCleanUIContainerToStopPolling = GazeFocusableWidgetToStopPolling->GetSlateGazeFocusableWidget();
+		if (SlateCleanUIContainerToStopPolling != nullptr && MySlateWidget.IsValid())
+		{
+			MySlateWidget->RemoveExtraCleanUIContainerToPollHitsFrom(SlateCleanUIContainerToStopPolling);
+		}		
+	}
+}
+
+void UTobiiGazeFocusableWidget::ReceiveFocus()
+{
+	ReceivedGazeFocus.Broadcast(this);
+}
+
+void UTobiiGazeFocusableWidget::LoseFocus()
+{
+	LostGazeFocus.Broadcast(this);
+}
+
+void UTobiiGazeFocusableWidget::SlateHandleHovered()
+{
+	OnHovered.Broadcast(this);
+}
+
+void UTobiiGazeFocusableWidget::SlateHandleUnhovered()
+{
+	OnUnhovered.Broadcast(this);
+}
+
+STobiiGazeFocusableWidget* UTobiiGazeFocusableWidget::GetSlateGazeFocusableWidget()
+{
+	if (MySlateWidget.IsValid())
+	{
+		return MySlateWidget.Get();
+	}
+
+	return nullptr;
+}
+
+TMap<FTobiiFocusableUID, TWeakObjectPtr<UTobiiGazeFocusableWidget>>& UTobiiGazeFocusableWidget::GetTobiiScreenSpaceFocusableWidgets()
+{
+	TArray<FTobiiFocusableUID> IdsToPrune;
+	for (auto& WidgetPair : GRegisteredTobiiScreenSpaceFocusableWidgets)
+	{
+		if (!WidgetPair.Value.IsValid())
+		{
+			IdsToPrune.Add(WidgetPair.Key);
+		}
+	}
+	for (FTobiiFocusableUID IdToPrune : IdsToPrune)
+	{
+		GRegisteredTobiiScreenSpaceFocusableWidgets.Remove(IdToPrune);
+	}
+
+	return GRegisteredTobiiScreenSpaceFocusableWidgets;
+}
+
+#if WITH_EDITOR
+const FText UTobiiGazeFocusableWidget::GetPaletteCategory()
+{
+	return LOCTEXT("Tobii", "Tobii");
+}
+#endif
+
+///////////////////////////////////////////////////
+
+#undef LOCTEXT_NAMESPACE