Add config setting to turn non-native fullscreen on or off

src/Surface.zig

@@ -146,6 +146,7 @@ const DerivedConfig = struct {
     clipboard_trim_trailing_spaces: bool,
     confirm_close_surface: bool,
     mouse_interval: u64,
+    macos_non_native_fullscreen: bool,
 
     pub fn init(alloc_gpa: Allocator, config: *const configpkg.Config) !DerivedConfig {
         var arena = ArenaAllocator.init(alloc_gpa);
@@ -160,6 +161,7 @@ const DerivedConfig = struct {
             .clipboard_trim_trailing_spaces = config.@"clipboard-trim-trailing-spaces",
             .confirm_close_surface = config.@"confirm-close-surface",
             .mouse_interval = config.@"click-repeat-interval" * 1_000_000, // 500ms
+            .macos_non_native_fullscreen = config.@"macos-non-native-fullscreen",
 
             // Assignments happen sequentially so we have to do this last
             // so that the memory is captured from allocs above.
@@ -1213,7 +1215,7 @@ pub fn keyCallback(
 
                 .toggle_fullscreen => {
                     if (@hasDecl(apprt.Surface, "toggleFullscreen")) {
-                        self.rt_surface.toggleFullscreen();
+                        self.rt_surface.toggleFullscreen(self.config.macos_non_native_fullscreen);
                     } else log.warn("runtime doesn't implement toggleFullscreen", .{});
                 },
 

src/apprt/embedded.zig

@@ -66,7 +66,7 @@ pub const App = struct {
         goto_tab: ?*const fn (SurfaceUD, usize) callconv(.C) void = null,
 
         /// Toggle fullscreen for current window.
-        toggle_fullscreen: ?*const fn (SurfaceUD) callconv(.C) void = null,
+        toggle_fullscreen: ?*const fn (SurfaceUD, bool) callconv(.C) void = null,
     };
 
     core_app: *CoreApp,
@@ -374,13 +374,13 @@ pub const Surface = struct {
         func(self.opts.userdata, n);
     }
 
-    pub fn toggleFullscreen(self: *Surface) void {
+    pub fn toggleFullscreen(self: *Surface, nonNativeFullscreen: bool) void {
         const func = self.app.opts.toggle_fullscreen orelse {
             log.info("runtime embedder does not toggle_fullscreen", .{});
             return;
         };
 
-        func(self.opts.userdata);
+        func(self.opts.userdata, nonNativeFullscreen);
     }
 
     /// The cursor position from the host directly is in screen coordinates but

src/apprt/gtk.zig

@@ -483,7 +483,7 @@ const Window = struct {
     }
 
     /// Toggle fullscreen for this window.
-    fn toggleFullscreen(self: *Window) void {
+    fn toggleFullscreen(self: *Window, _: bool) void {
         const is_fullscreen = c.gtk_window_is_fullscreen(self.window);
         if (is_fullscreen == 0) {
             c.gtk_window_fullscreen(self.window);

src/config.zig

@@ -221,6 +221,12 @@ pub const Config = struct {
     /// The default value is "detect".
     @"shell-integration": ShellIntegration = .detect,
 
+    /// If true, fullscreen mode on macOS will not use the native fullscreen,
+    /// but make the window fullscreen without animations and using a new space.
+    /// That's faster than the native fullscreen mode since it doesn't use
+    /// animations.
+    @"macos-non-native-fullscreen": bool = false,
+
     /// This is set by the CLI parser for deinit.
     _arena: ?ArenaAllocator = null,