Move SupportsNativeDecorations/SupportsNativeDecorationDragging to SDLPlatform

#2800

Source/Editor/Utilities/Utils.cs

@@ -1589,8 +1589,8 @@ namespace FlaxEditor.Utilities
 #if PLATFORM_SDL
             return Editor.Instance.Options.Options.Interface.WindowDecorations switch
             {
-                Options.InterfaceOptions.WindowDecorationsType.Auto => !Platform.SupportsNativeDecorations,
-                Options.InterfaceOptions.WindowDecorationsType.AutoChildOnly => !isMainWindow ? !Platform.SupportsNativeDecorations : true,
+                Options.InterfaceOptions.WindowDecorationsType.Auto => !SDLPlatform.SupportsNativeDecorations,
+                Options.InterfaceOptions.WindowDecorationsType.AutoChildOnly => !isMainWindow ? !SDLPlatform.SupportsNativeDecorations : true,
                 Options.InterfaceOptions.WindowDecorationsType.Native => false,
                 Options.InterfaceOptions.WindowDecorationsType.ClientSide => true,
                 _ => throw new ArgumentOutOfRangeException()
@@ -1607,7 +1607,7 @@ namespace FlaxEditor.Utilities
 #if PLATFORM_SDL
             // We should not hide the tab bars if tab handle is the only way to dock the window
             bool clientSideDecorations = UseCustomWindowDecorations(false);
-            bool draggableDecorations = clientSideDecorations || Platform.SupportsNativeDecorationDragging;
+            bool draggableDecorations = clientSideDecorations || SDLPlatform.SupportsNativeDecorationDragging;
             return draggableDecorations && Editor.Instance.Options.Options.Interface.HideSingleTabWindowTabBars;
 #elif PLATFORM_WINDOWS
             return Editor.Instance.Options.Options.Interface.HideSingleTabWindowTabBars;

Source/Engine/Platform/Base/PlatformBase.cpp

@@ -292,24 +292,6 @@ PlatformType PlatformBase::GetPlatformType()
     return PLATFORM_TYPE;
 }
 
-#if !PLATFORM_SDL
-
-bool PlatformBase::SupportsNativeDecorations()
-{
-    return true;
-}
-
-bool PlatformBase::SupportsNativeDecorationDragging()
-{
-#if PLATFORM_LINUX
-    return false;
-#else
-    return true;
-#endif
-}
-
-#endif
-
 bool PlatformBase::Is64BitApp()
 {
 #if PLATFORM_64BITS

Source/Engine/Platform/Base/PlatformBase.h

@@ -369,16 +369,6 @@ public:
     /// </summary>
     API_PROPERTY() static PlatformType GetPlatformType();
 
-    /// <summary>
-    /// Returns true if system provides decorations for windows.
-    /// </summary>
-    API_PROPERTY() static bool SupportsNativeDecorations();
-
-    /// <summary>
-    /// Returns true if system provides support for native window dragging events.
-    /// </summary>
-    API_PROPERTY() static bool SupportsNativeDecorationDragging();
-
     /// <summary>
     /// Returns true if is running 64 bit application (otherwise 32 bit). It's compile-time constant.
     /// </summary>

Source/Engine/Platform/SDL/SDLPlatform.Linux.cpp

@@ -1701,7 +1701,7 @@ String SDLPlatform::GetDisplayServer()
 
 void SDLPlatform::SetHighDpiAwarenessEnabled(bool enable)
 {
-    base::SetHighDpiAwarenessEnabled(enable);
+    SDLPlatformBase::SetHighDpiAwarenessEnabled(enable);
 }
 
 bool SDLPlatform::UsesWindows()

Source/Engine/Platform/SDL/SDLPlatform.cpp

@@ -153,7 +153,7 @@ bool SDLPlatform::Init()
 
     //SDL_StartTextInput(); // TODO: Call this only when text input is expected (shows virtual keyboard in some cases)
 
-    return base::Init();
+    return SDLPlatformBase::Init();
 }
 
 void SDLPlatform::LogInfo()

Source/Engine/Platform/SDL/SDLPlatform.h

@@ -20,26 +20,22 @@ static_assert(false, "Unsupported Platform");
 class SDLWindow;
 union SDL_Event;
 
+#if PLATFORM_WINDOWS
+typedef WindowsPlatform SDLPlatformBase;
+#elif PLATFORM_LINUX
+typedef LinuxPlatform SDLPlatformBase;
+#elif PLATFORM_MAC
+typedef MacPlatform SDLPlatformBase;
+#else
+static_assert(false, "Unsupported SDL platform.");
+#endif
+
 /// <summary>
 /// The SDL platform implementation and application management utilities.
 /// </summary>
-class FLAXENGINE_API SDLPlatform
-#if PLATFORM_WINDOWS
-    : public WindowsPlatform
+API_CLASS(Static, Tag="NoTypeInitializer")
+class FLAXENGINE_API SDLPlatform : public SDLPlatformBase
 {
-    using base = WindowsPlatform;
-#elif PLATFORM_LINUX
-    : public LinuxPlatform
-{
-    using base = LinuxPlatform;
-#elif PLATFORM_MAC
-: public MacPlatform
-{
-    using base = MacPlatform;
-#else
-{
-    static_assert(false, "Unsupported Platform");
-#endif
     friend SDLWindow;
 
 private:
@@ -68,13 +64,21 @@ public:
     static bool UsesWayland();
     static bool UsesX11();
 
+    /// <summary>
+    /// Returns true if system provides decorations for windows.
+    /// </summary>
+    API_PROPERTY() static bool SupportsNativeDecorations();
+
+    /// <summary>
+    /// Returns true if system provides support for native window dragging events.
+    /// </summary>
+    API_PROPERTY() static bool SupportsNativeDecorationDragging();
+
 public:
     // [PlatformBase]
     static bool Init();
     static void LogInfo();
     static void Tick();
-    static bool SupportsNativeDecorations();
-    static bool SupportsNativeDecorationDragging();
     static void SetHighDpiAwarenessEnabled(bool enable);
 #if !PLATFORM_WINDOWS
     static BatteryInfo GetBatteryInfo();