mirror of
https://github.com/litruv/TobiiEyetracking.git
synced 2026-07-24 10:46:12 +10:00
136 lines
4.0 KiB
C++
136 lines
4.0 KiB
C++
/******************************************************************************
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* Copyright 2017- Tobii Technology AB. All rights reserved.
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*
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* @author Temaran | Fredrik Lindh | fredrik.lindh@tobii.com | https://github.com/Temaran
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******************************************************************************/
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#include "TobiiPlatformSpecific.h"
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#include "Framework/Application/SlateApplication.h"
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#if PLATFORM_WINDOWS
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#include "Windows/AllowWindowsPlatformTypes.h"
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#include "dbt.h"
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struct MonitorHandleContext
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{
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FString DeviceName;
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HMONITOR hMonitorHandle;
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};
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BOOL CALLBACK EnumDisplayMonitorsProc(HMONITOR hMonitorHandle, HDC, LPRECT, LPARAM Data)
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{
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MonitorHandleContext* Context = (MonitorHandleContext*)Data;
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MONITORINFOEXA MonitorInfo;
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MonitorInfo.cbSize = sizeof(MonitorInfo);
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int res = GetMonitorInfoA(hMonitorHandle, &MonitorInfo);
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if (res && _stricmp(MonitorInfo.szDevice, TCHAR_TO_ANSI(*Context->DeviceName)) == 0)
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{
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Context->hMonitorHandle = hMonitorHandle;
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return FALSE;
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}
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return TRUE;
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}
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void* FTobiiPlatformSpecific::GetMonitorInformation(const void* GameWindowHandle, int& MonitorWidthPx, int& MonitorHeightPx)
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{
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HWND hGameWindowHandle = (HWND)GameWindowHandle;
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HMONITOR hGameMonitor = MonitorFromWindow(hGameWindowHandle, MONITOR_DEFAULTTONEAREST);
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MONITORINFO MonitorInfo;
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MonitorInfo.cbSize = sizeof(MONITORINFO);
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if (GetMonitorInfo(hGameMonitor, &MonitorInfo))
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{
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MonitorWidthPx = MonitorInfo.rcMonitor.right - MonitorInfo.rcMonitor.left;
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MonitorHeightPx = MonitorInfo.rcMonitor.bottom - MonitorInfo.rcMonitor.top;
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return (void*)hGameMonitor;
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}
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MonitorWidthPx = -1;
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MonitorHeightPx = -1;
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return nullptr;
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}
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void* FTobiiPlatformSpecific::MonitorHandleFromDeviceName(FString DeviceName)
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{
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MonitorHandleContext Context;
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Context.DeviceName = DeviceName;
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Context.hMonitorHandle = nullptr;
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EnumDisplayMonitors(nullptr, nullptr, EnumDisplayMonitorsProc, (LPARAM)&Context);
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return (void*)Context.hMonitorHandle;
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}
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bool FTobiiPlatformSpecific::ConvertGazeCoordinateToVirtualDesktopPixel(void* GameWindowHandle, const FVector2D& ClientCoordsUNorm, FIntPoint& OutVirtualDesktopPixel)
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{
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//Now we can try to convert our point
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RECT ClientRect;
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if (GetClientRect((HWND)GameWindowHandle, &ClientRect))
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{
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POINT ClientPoint;
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ClientPoint.x = (int32)(ClientCoordsUNorm.X * (ClientRect.right - ClientRect.left));
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ClientPoint.y = (int32)(ClientCoordsUNorm.Y * (ClientRect.bottom - ClientRect.top));
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if (ClientToScreen((HWND)GameWindowHandle, &ClientPoint))
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{
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OutVirtualDesktopPixel.X = ClientPoint.x;
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OutVirtualDesktopPixel.Y = ClientPoint.y;
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return true;
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}
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}
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return false;
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}
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FTobiiPlatformNotifications::FTobiiPlatformNotifications()
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: bShouldForceEyetrackerReconnect(true)
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, bShouldUpdateGameMonitorHandle(true)
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{
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if (FSlateApplication::IsInitialized())
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{
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const TSharedPtr<GenericApplication> Application = FSlateApplication::Get().GetPlatformApplication();
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if (Application.IsValid())
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{
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FWindowsApplication* WindowsApplication = (FWindowsApplication*)Application.Get();
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WindowsApplication->AddMessageHandler(*this);
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}
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}
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}
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FTobiiPlatformNotifications::~FTobiiPlatformNotifications()
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{
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if (FSlateApplication::IsInitialized())
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{
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const TSharedPtr<GenericApplication> Application = FSlateApplication::Get().GetPlatformApplication();
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if (Application.IsValid())
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{
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FWindowsApplication* WindowsApplication = (FWindowsApplication*)Application.Get();
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WindowsApplication->RemoveMessageHandler(*this);
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}
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}
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}
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bool FTobiiPlatformNotifications::ProcessMessage(HWND hwnd, uint32 msg, WPARAM wParam, LPARAM lParam, int32& OutResult)
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{
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switch (msg)
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{
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case WM_DEVICECHANGE:
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{
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if (wParam == DBT_DEVICEARRIVAL)
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{
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//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.
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bShouldForceEyetrackerReconnect = true;
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}
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break;
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}
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case WM_DISPLAYCHANGE:
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{
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bShouldUpdateGameMonitorHandle = true;
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break;
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}
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}
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return false;
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}
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#include "Runtime/Core/Public/Windows/HideWindowsPlatformTypes.h"
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#endif
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