4 files changed, 61 insertions, 3 deletions
diff --git a/platform/osx/dir_access_osx.h b/platform/osx/dir_access_osx.h
index d61ee181f0..91b8f9b2c5 100644
--- a/platform/osx/dir_access_osx.h
+++ b/platform/osx/dir_access_osx.h
@@ -47,6 +47,8 @@ protected:
 
 	virtual int get_drive_count();
 	virtual String get_drive(int p_drive);
+
+	virtual bool is_hidden(const String &p_name);
 };
 
 #endif //UNIX ENABLED
diff --git a/platform/osx/dir_access_osx.mm b/platform/osx/dir_access_osx.mm
index 7791ba5407..439c6a075f 100644
--- a/platform/osx/dir_access_osx.mm
+++ b/platform/osx/dir_access_osx.mm
@@ -68,4 +68,14 @@ String DirAccessOSX::get_drive(int p_drive) {
 	return volname;
 }
 
+bool DirAccessOSX::is_hidden(const String &p_name) {
+	String f = get_current_dir().plus_file(p_name);
+	NSURL *url = [NSURL fileURLWithPath:@(f.utf8().get_data())];
+	NSNumber *hidden = nil;
+	if (![url getResourceValue:&hidden forKey:NSURLIsHiddenKey error:nil]) {
+		return DirAccessUnix::is_hidden(p_name);
+	}
+	return [hidden boolValue];
+}
+
 #endif //posix_enabled
diff --git a/platform/osx/display_server_osx.h b/platform/osx/display_server_osx.h
index d8f3f81ff6..073d35008b 100644
--- a/platform/osx/display_server_osx.h
+++ b/platform/osx/display_server_osx.h
@@ -102,6 +102,8 @@ public:
 		id window_object;
 		id window_view;
 
+		Vector<Vector2> mpath;
+
 #if defined(OPENGL_ENABLED)
 		ContextGL_OSX *context_gles2 = nullptr;
 #endif
@@ -240,6 +242,7 @@ public:
 	virtual void window_set_drop_files_callback(const Callable &p_callable, WindowID p_window = MAIN_WINDOW_ID) override;
 
 	virtual void window_set_title(const String &p_title, WindowID p_window = MAIN_WINDOW_ID) override;
+	virtual void window_set_mouse_passthrough(const Vector<Vector2> &p_region, WindowID p_window = MAIN_WINDOW_ID) override;
 
 	virtual int window_get_current_screen(WindowID p_window = MAIN_WINDOW_ID) const override;
 	virtual void window_set_current_screen(int p_screen, WindowID p_window = MAIN_WINDOW_ID) override;
diff --git a/platform/osx/display_server_osx.mm b/platform/osx/display_server_osx.mm
index adfb47324e..cd5b71890c 100644
--- a/platform/osx/display_server_osx.mm
+++ b/platform/osx/display_server_osx.mm
@@ -33,6 +33,7 @@
 #include "os_osx.h"
 
 #include "core/io/marshalls.h"
+#include "core/math/geometry_2d.h"
 #include "core/os/keyboard.h"
 #include "main/main.h"
 #include "scene/resources/texture.h"
@@ -2040,6 +2041,12 @@ void DisplayServerOSX::mouse_set_mode(MouseMode p_mode) {
 			CGDisplayHideCursor(kCGDirectMainDisplay);
 		}
 		CGAssociateMouseAndMouseCursorPosition(false);
+		WindowData &wd = windows[MAIN_WINDOW_ID];
+		const NSRect contentRect = [wd.window_view frame];
+		NSRect pointInWindowRect = NSMakeRect(contentRect.size.width / 2, contentRect.size.height / 2, 0, 0);
+		NSPoint pointOnScreen = [[wd.window_view window] convertRectToScreen:pointInWindowRect].origin;
+		CGPoint lMouseWarpPos = { pointOnScreen.x, CGDisplayBounds(CGMainDisplayID()).size.height - pointOnScreen.y };
+		CGWarpMouseCursorPosition(lMouseWarpPos);
 	} else if (p_mode == MOUSE_MODE_HIDDEN) {
 		if (mouse_mode == MOUSE_MODE_VISIBLE || mouse_mode == MOUSE_MODE_CONFINED) {
 			CGDisplayHideCursor(kCGDirectMainDisplay);
@@ -2239,11 +2246,18 @@ int DisplayServerOSX::screen_get_dpi(int p_screen) const {
 	NSArray *screenArray = [NSScreen screens];
 	if ((NSUInteger)p_screen < [screenArray count]) {
 		NSDictionary *description = [[screenArray objectAtIndex:p_screen] deviceDescription];
-		NSSize displayDPI = [[description objectForKey:NSDeviceResolution] sizeValue];
-		return (displayDPI.width + displayDPI.height) / 2;
+
+		const NSSize displayPixelSize = [[description objectForKey:NSDeviceSize] sizeValue];
+		const CGSize displayPhysicalSize = CGDisplayScreenSize([[description objectForKey:@"NSScreenNumber"] unsignedIntValue]);
+		float scale = [[screenArray objectAtIndex:p_screen] backingScaleFactor];
+
+		float den2 = (displayPhysicalSize.width / 25.4f) * (displayPhysicalSize.width / 25.4f) + (displayPhysicalSize.height / 25.4f) * (displayPhysicalSize.height / 25.4f);
+		if (den2 > 0.0f) {
+			return ceil(sqrt(displayPixelSize.width * displayPixelSize.width + displayPixelSize.height * displayPixelSize.height) / sqrt(den2) * scale);
+		}
 	}
 
-	return 96;
+	return 72;
 }
 
 float DisplayServerOSX::screen_get_scale(int p_screen) const {
@@ -2404,6 +2418,15 @@ void DisplayServerOSX::window_set_title(const String &p_title, WindowID p_window
 	[wd.window_object setTitle:[NSString stringWithUTF8String:p_title.utf8().get_data()]];
 }
 
+void DisplayServerOSX::window_set_mouse_passthrough(const Vector<Vector2> &p_region, WindowID p_window) {
+	_THREAD_SAFE_METHOD_
+
+	ERR_FAIL_COND(!windows.has(p_window));
+	WindowData &wd = windows[p_window];
+
+	wd.mpath = p_region;
+}
+
 void DisplayServerOSX::window_set_rect_changed_callback(const Callable &p_callable, WindowID p_window) {
 	_THREAD_SAFE_METHOD_
 
@@ -3356,6 +3379,26 @@ void DisplayServerOSX::process_events() {
 		Input::get_singleton()->flush_accumulated_events();
 	}
 
+	for (Map<WindowID, WindowData>::Element *E = windows.front(); E; E = E->next()) {
+		WindowData &wd = E->get();
+		if (wd.mpath.size() > 0) {
+			const Vector2 mpos = _get_mouse_pos(wd, [wd.window_object mouseLocationOutsideOfEventStream]);
+			if (Geometry2D::is_point_in_polygon(mpos, wd.mpath)) {
+				if ([wd.window_object ignoresMouseEvents]) {
+					[wd.window_object setIgnoresMouseEvents:NO];
+				}
+			} else {
+				if (![wd.window_object ignoresMouseEvents]) {
+					[wd.window_object setIgnoresMouseEvents:YES];
+				}
+			}
+		} else {
+			if ([wd.window_object ignoresMouseEvents]) {
+				[wd.window_object setIgnoresMouseEvents:NO];
+			}
+		}
+	}
+
 	[autoreleasePool drain];
 	autoreleasePool = [[NSAutoreleasePool alloc] init];
 }