Restore font smoothing settings

DDrawCompat/CompatActivateAppHandler.cpp

@@ -2,6 +2,7 @@
 #include "CompatDirectDraw.h"
 #include "CompatDirectDrawSurface.h"
 #include "CompatDisplayMode.h"
+#include "CompatFontSmoothing.h"
 #include "CompatGdi.h"
 #include "CompatPrimarySurface.h"
 #include "CompatPtr.h"
@@ -16,6 +17,7 @@ namespace
 	CompatWeakPtr<IUnknown> g_fullScreenDirectDraw = nullptr;
 	HWND g_fullScreenCooperativeWindow = nullptr;
 	DWORD g_fullScreenCooperativeFlags = 0;
+	CompatFontSmoothing::SystemSettings g_fontSmoothingSettings = {};
 	HHOOK g_callWndProcHook = nullptr;
 
 	void handleActivateApp(bool isActivated);
@@ -42,6 +44,8 @@ namespace
 			CompatDirectDrawSurface<IDirectDrawSurface7>::fixSurfacePtrs(*primary);
 			CompatGdi::invalidate(nullptr);
 		}
+
+		CompatFontSmoothing::setSystemSettings(g_fontSmoothingSettings);
 	}
 
 	void deactivateApp(CompatRef<IDirectDraw7> dd)
@@ -53,6 +57,9 @@ namespace
 		{
 			ShowWindow(g_fullScreenCooperativeWindow, SW_SHOWMINNOACTIVE);
 		}
+
+		g_fontSmoothingSettings = CompatFontSmoothing::getSystemSettings();
+		CompatFontSmoothing::setSystemSettings(CompatFontSmoothing::g_origSystemSettings);
 	}
 
 	LRESULT CALLBACK callWndProc(int nCode, WPARAM wParam, LPARAM lParam)

DDrawCompat/CompatFontSmoothing.cpp

@@ -0,0 +1,57 @@
+#define WIN32_LEAN_AND_MEAN
+
+#include <Windows.h>
+
+#include "CompatFontSmoothing.h"
+
+namespace CompatFontSmoothing
+{
+	SystemSettings g_origSystemSettings = {};
+
+	bool SystemSettings::operator==(const SystemSettings& rhs) const
+	{
+		return isEnabled == rhs.isEnabled &&
+			type == rhs.type &&
+			contrast == rhs.contrast &&
+			orientation == rhs.orientation;
+	}
+
+	bool SystemSettings::operator!=(const SystemSettings& rhs) const
+	{
+		return !(*this == rhs);
+	}
+
+	SystemSettings getSystemSettings()
+	{
+		SystemSettings settings = {};
+		SystemParametersInfo(SPI_GETFONTSMOOTHING, 0, &settings.isEnabled, 0);
+		SystemParametersInfo(SPI_GETFONTSMOOTHINGTYPE, 0, &settings.type, 0);
+		SystemParametersInfo(SPI_GETFONTSMOOTHINGCONTRAST, 0, &settings.contrast, 0);
+		SystemParametersInfo(SPI_GETFONTSMOOTHINGORIENTATION, 0, &settings.orientation, 0);
+		return settings;
+	}
+
+	void setSystemSettings(const SystemSettings& settings)
+	{
+		if (settings != getSystemSettings())
+		{
+			setSystemSettingsForced(settings);
+		}
+	}
+
+	void setSystemSettingsForced(const SystemSettings& settings)
+	{
+		SystemParametersInfo(SPI_SETFONTSMOOTHING, settings.isEnabled, nullptr, 0);
+		SystemParametersInfo(SPI_SETFONTSMOOTHINGTYPE, 0,
+			reinterpret_cast<void*>(settings.type), 0);
+		SystemParametersInfo(SPI_SETFONTSMOOTHINGCONTRAST, 0,
+			reinterpret_cast<void*>(settings.contrast), 0);
+		SystemParametersInfo(SPI_SETFONTSMOOTHINGORIENTATION, 0,
+			reinterpret_cast<void*>(settings.orientation), 0);
+
+		const char* regKey = "FontSmoothing";
+		SendMessageTimeout(HWND_BROADCAST, WM_SETTINGCHANGE, SPI_SETFONTSMOOTHING,
+			reinterpret_cast<LPARAM>(regKey), SMTO_BLOCK, 100, nullptr);
+		RedrawWindow(nullptr, nullptr, nullptr, RDW_INVALIDATE | RDW_ERASE | RDW_ALLCHILDREN);
+	}
+}

DDrawCompat/CompatFontSmoothing.h

@@ -0,0 +1,21 @@
+#pragma once
+
+namespace CompatFontSmoothing
+{
+	struct SystemSettings
+	{
+		BOOL isEnabled;
+		UINT type;
+		UINT contrast;
+		UINT orientation;
+
+		bool operator==(const SystemSettings& rhs) const;
+		bool operator!=(const SystemSettings& rhs) const;
+	};
+
+	extern SystemSettings g_origSystemSettings;
+
+	SystemSettings getSystemSettings();
+	void setSystemSettings(const SystemSettings& settings);
+	void setSystemSettingsForced(const SystemSettings& settings);
+}

DDrawCompat/DDrawCompat.vcxproj

@@ -147,6 +147,7 @@
     <ClInclude Include="CompatActivateAppHandler.h" />
     <ClInclude Include="CompatDirectDrawPalette.h" />
     <ClInclude Include="CompatDisplayMode.h" />
+    <ClInclude Include="CompatFontSmoothing.h" />
     <ClInclude Include="CompatGdi.h" />
     <ClInclude Include="CompatGdiCaret.h" />
     <ClInclude Include="CompatGdiDc.h" />
@@ -189,6 +190,7 @@
     <ClCompile Include="CompatDirectDrawPalette.cpp" />
     <ClCompile Include="CompatDirectDrawSurface.cpp" />
     <ClCompile Include="CompatDisplayMode.cpp" />
+    <ClCompile Include="CompatFontSmoothing.cpp" />
     <ClCompile Include="CompatGdi.cpp" />
     <ClCompile Include="CompatGdiCaret.cpp" />
     <ClCompile Include="CompatGdiDcCache.cpp" />

DDrawCompat/DDrawCompat.vcxproj.filters

@@ -129,6 +129,9 @@
     <ClInclude Include="CompatDisplayMode.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="CompatFontSmoothing.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="DllMain.cpp">
@@ -212,6 +215,9 @@
     <ClCompile Include="CompatDisplayMode.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="CompatFontSmoothing.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="DDrawCompat.def">

DDrawCompat/DllMain.cpp

@@ -9,6 +9,7 @@
 #include "CompatDirectDraw.h"
 #include "CompatDirectDrawSurface.h"
 #include "CompatDirectDrawPalette.h"
+#include "CompatFontSmoothing.h"
 #include "CompatGdi.h"
 #include "CompatRegistry.h"
 #include "CompatPtr.h"
@@ -183,6 +184,7 @@ BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID /*lpvReserved*/)
 		SetProcessPriorityBoost(GetCurrentProcess(), disablePriorityBoost);
 		SetProcessAffinityMask(GetCurrentProcess(), 1);
 		SetThemeAppProperties(0);
+		CompatFontSmoothing::g_origSystemSettings = CompatFontSmoothing::getSystemSettings();
 		Time::init();
 
 		if (Compat::origProcs.SetAppCompatData)
@@ -204,6 +206,7 @@ BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID /*lpvReserved*/)
 		Compat::unhookAllFunctions();
 		FreeLibrary(g_origDInputModule);
 		FreeLibrary(g_origDDrawModule);
+		CompatFontSmoothing::setSystemSettingsForced(CompatFontSmoothing::g_origSystemSettings);
 		Compat::Log() << "DDrawCompat detached successfully";
 	}