Added Tobii from 4.23 + updated

Source/TobiiCore/Private/TobiiPlatformSpecific.cpp

@@ -0,0 +1,135 @@
+/******************************************************************************
+* Copyright 2017- Tobii Technology AB. All rights reserved.
+*
+* @author Temaran | Fredrik Lindh | fredrik.lindh@tobii.com | https://github.com/Temaran
+******************************************************************************/
+
+#include "TobiiPlatformSpecific.h"
+
+#include "Framework/Application/SlateApplication.h"
+
+#if PLATFORM_WINDOWS
+#include "Windows/AllowWindowsPlatformTypes.h"
+#include "dbt.h"
+
+struct MonitorHandleContext
+{
+	FString DeviceName;
+	HMONITOR hMonitorHandle;
+};
+
+BOOL CALLBACK EnumDisplayMonitorsProc(HMONITOR hMonitorHandle, HDC, LPRECT, LPARAM Data)
+{
+	MonitorHandleContext* Context = (MonitorHandleContext*)Data;
+	MONITORINFOEXA MonitorInfo;
+	MonitorInfo.cbSize = sizeof(MonitorInfo);
+	int res = GetMonitorInfoA(hMonitorHandle, &MonitorInfo);
+	if (res && _stricmp(MonitorInfo.szDevice, TCHAR_TO_ANSI(*Context->DeviceName)) == 0)
+	{
+		Context->hMonitorHandle = hMonitorHandle;
+		return FALSE;
+	}
+	return TRUE;
+}
+
+void* FTobiiPlatformSpecific::GetMonitorInformation(const void* GameWindowHandle, int& MonitorWidthPx, int& MonitorHeightPx)
+{
+	HWND hGameWindowHandle = (HWND)GameWindowHandle;
+	HMONITOR hGameMonitor = MonitorFromWindow(hGameWindowHandle, MONITOR_DEFAULTTONEAREST);
+	MONITORINFO MonitorInfo;
+	MonitorInfo.cbSize = sizeof(MONITORINFO);
+	if (GetMonitorInfo(hGameMonitor, &MonitorInfo))
+	{
+		MonitorWidthPx = MonitorInfo.rcMonitor.right - MonitorInfo.rcMonitor.left;
+		MonitorHeightPx = MonitorInfo.rcMonitor.bottom - MonitorInfo.rcMonitor.top;
+		return (void*)hGameMonitor;
+	}
+
+	MonitorWidthPx = -1;
+ 	MonitorHeightPx = -1;
+	return nullptr;
+}
+
+void* FTobiiPlatformSpecific::MonitorHandleFromDeviceName(FString DeviceName)
+{
+ 	MonitorHandleContext Context;
+ 	Context.DeviceName = DeviceName;
+ 	Context.hMonitorHandle = nullptr;
+	EnumDisplayMonitors(nullptr, nullptr, EnumDisplayMonitorsProc, (LPARAM)&Context);
+	return (void*)Context.hMonitorHandle;
+}
+
+bool FTobiiPlatformSpecific::ConvertGazeCoordinateToVirtualDesktopPixel(void* GameWindowHandle, const FVector2D& ClientCoordsUNorm, FIntPoint& OutVirtualDesktopPixel)
+{
+	//Now we can try to convert our point
+	RECT ClientRect;
+	if (GetClientRect((HWND)GameWindowHandle, &ClientRect))
+	{
+		POINT ClientPoint;
+		ClientPoint.x = (int32)(ClientCoordsUNorm.X * (ClientRect.right - ClientRect.left));
+		ClientPoint.y = (int32)(ClientCoordsUNorm.Y * (ClientRect.bottom - ClientRect.top));
+		if (ClientToScreen((HWND)GameWindowHandle, &ClientPoint))
+		{
+			OutVirtualDesktopPixel.X = ClientPoint.x;
+			OutVirtualDesktopPixel.Y = ClientPoint.y;
+			return true;
+		}
+	}
+
+	return false;
+}
+
+FTobiiPlatformNotifications::FTobiiPlatformNotifications()
+	: bShouldForceEyetrackerReconnect(true)
+	, bShouldUpdateGameMonitorHandle(true)
+{
+	if (FSlateApplication::IsInitialized())
+	{
+		const TSharedPtr<GenericApplication> Application = FSlateApplication::Get().GetPlatformApplication();
+		if (Application.IsValid())
+		{
+			FWindowsApplication* WindowsApplication = (FWindowsApplication*)Application.Get();
+			WindowsApplication->AddMessageHandler(*this);
+		}
+	}
+}
+
+FTobiiPlatformNotifications::~FTobiiPlatformNotifications()
+{
+	if (FSlateApplication::IsInitialized())
+	{
+		const TSharedPtr<GenericApplication> Application = FSlateApplication::Get().GetPlatformApplication();
+		if (Application.IsValid())
+		{
+			FWindowsApplication* WindowsApplication = (FWindowsApplication*)Application.Get();
+			WindowsApplication->RemoveMessageHandler(*this);
+		}
+	}
+}
+
+bool FTobiiPlatformNotifications::ProcessMessage(HWND hwnd, uint32 msg, WPARAM wParam, LPARAM lParam, int32& OutResult)
+{
+	switch (msg)
+	{
+	case WM_DEVICECHANGE:
+	{
+		if (wParam == DBT_DEVICEARRIVAL)
+		{
+			//This is narrow enough for us. We just want to short-circuit the reconnection timer if someone plugged in an eyetracker so they don't have to wait the full reconnection time.
+			bShouldForceEyetrackerReconnect = true;
+		}
+		break;
+	}
+
+	case WM_DISPLAYCHANGE:
+	{
+		bShouldUpdateGameMonitorHandle = true;
+		break;
+	}
+ 	}
+
+	return false;
+}
+
+#include "Runtime/Core/Public/Windows/HideWindowsPlatformTypes.h"
+#endif