From 4482301882cb9afc314d632c125fff466e929676 Mon Sep 17 00:00:00 2001
From: Hajime Hoshi <hajimehoshi@gmail.com>
Date: Sun, 8 Aug 2021 17:45:44 +0900
Subject: [PATCH] internal/uidriver/glfw: Better implementation of
 isNativeFullscreen

The old implementation can return false when the window is not active.
---
 internal/uidriver/glfw/ui_darwin.go | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/internal/uidriver/glfw/ui_darwin.go b/internal/uidriver/glfw/ui_darwin.go
index bbf879013..bec34bc38 100644
--- a/internal/uidriver/glfw/ui_darwin.go
+++ b/internal/uidriver/glfw/ui_darwin.go
@@ -42,9 +42,12 @@ package glfw
 //   }
 // }
 //
-// static bool isNativeFullscreen() {
-//   return [[NSApplication sharedApplication] currentSystemPresentationOptions] &
-//       NSApplicationPresentationFullScreen;
+// static bool isNativeFullscreen(uintptr_t windowPtr) {
+//   if (!windowPtr) {
+//     return false;
+//   }
+//   NSWindow* window = (NSWindow*)windowPtr;
+//   return (window.styleMask & NSWindowStyleMaskFullScreen) != 0;
 // }
 //
 // static void setNativeCursor(int cursorID) {
@@ -118,7 +121,7 @@ func (u *UserInterface) nativeWindow() uintptr {
 }
 
 func (u *UserInterface) isNativeFullscreen() bool {
-	return bool(C.isNativeFullscreen())
+	return bool(C.isNativeFullscreen(C.uintptr_t(u.window.GetCocoaWindow())))
 }
 
 func (u *UserInterface) setNativeCursor(shape driver.CursorShape) {