Merge pull request #172 from mitchellh/mrn/toggle-fullscreen

Toggle fullscreen on super/ctrl+return, only macOS for now

include/ghostty.h

@@ -239,6 +239,7 @@ typedef void (*ghostty_runtime_new_split_cb)(void *, ghostty_split_direction_e);
 typedef void (*ghostty_runtime_close_surface_cb)(void *, bool);
 typedef void (*ghostty_runtime_focus_split_cb)(void *, ghostty_split_focus_direction_e);
 typedef void (*ghostty_runtime_goto_tab_cb)(void *, int32_t);
+typedef void (*ghostty_runtime_toggle_fullscreen_cb)(void *);
 
 typedef struct {
     void *userdata;
@@ -251,6 +252,7 @@ typedef struct {
     ghostty_runtime_close_surface_cb close_surface_cb;
     ghostty_runtime_focus_split_cb focus_split_cb;
     ghostty_runtime_goto_tab_cb goto_tab_cb;
+    ghostty_runtime_toggle_fullscreen_cb toggle_fullscreen_cb;
 } ghostty_runtime_config_s;
 
 //-------------------------------------------------------------------

macos/Sources/ContentView.swift

@@ -28,6 +28,7 @@ struct ContentView: View {
         case .ready:
             let center = NotificationCenter.default
             let gotoTab = center.publisher(for: Ghostty.Notification.ghosttyGotoTab)
+            let toggleFullscreen = center.publisher(for: Ghostty.Notification.ghosttyToggleFullscreen)
             
             let confirmQuitting = Binding<Bool>(get: {
                 self.appDelegate.confirmQuit && (self.window?.isKeyWindow ?? false)
@@ -39,6 +40,7 @@ struct ContentView: View {
                 .ghosttyApp(ghostty.app!)
                 .background(WindowAccessor(window: $window))
                 .onReceive(gotoTab) { onGotoTab(notification: $0) }
+                .onReceive(toggleFullscreen) { onToggleFullscreen(notification: $0) }
                 .confirmationDialog(
                     "Quit Ghostty?",
                     isPresented: confirmQuitting) {
@@ -84,4 +86,14 @@ struct ContentView: View {
         let targetWindow = tabbedWindows[adjustedIndex]
         targetWindow.makeKeyAndOrderFront(nil)
     }
+
+    private func onToggleFullscreen(notification: SwiftUI.Notification) {
+        // Just like in `onGotoTab`, we might receive this multiple times. But
+        // it's fine, because `toggleFullscreen` should only apply to the
+        // currently focused window.
+        guard let window = self.window else { return }
+        guard window.isKeyWindow else { return }
+        
+        window.toggleFullScreen(nil)
+    }
 }

macos/Sources/Ghostty/AppState.swift

@@ -62,7 +62,8 @@ extension Ghostty {
                 new_split_cb: { userdata, direction in AppState.newSplit(userdata, direction: direction) },
                 close_surface_cb: { userdata, processAlive in AppState.closeSurface(userdata, processAlive: processAlive) },
                 focus_split_cb: { userdata, direction in AppState.focusSplit(userdata, direction: direction) },
-                goto_tab_cb: { userdata, n in AppState.gotoTab(userdata, n: n) }
+                goto_tab_cb: { userdata, n in AppState.gotoTab(userdata, n: n) },
+                toggle_fullscreen_cb: { userdata in AppState.toggleFullscreen(userdata) }
             )
 
             // Create the ghostty app.
@@ -217,6 +218,15 @@ extension Ghostty {
                 surfaceView.title = titleStr
             }
         }
+
+        static func toggleFullscreen(_ userdata: UnsafeMutableRawPointer?) {
+            guard let surface = self.surfaceUserdata(from: userdata) else { return }
+            NotificationCenter.default.post(
+                name: Notification.ghosttyToggleFullscreen,
+                object: surface,
+                userInfo: [:]
+            )
+        }
         
         /// Returns the GhosttyState from the given userdata value.
         static private func appState(fromSurface userdata: UnsafeMutableRawPointer?) -> AppState? {

macos/Sources/Ghostty/Package.swift

@@ -78,6 +78,9 @@ extension Ghostty.Notification {
     /// Goto tab. Has tab index in the userinfo.
     static let ghosttyGotoTab = Notification.Name("com.mitchellh.ghostty.gotoTab")
     static let GotoTabKey = ghosttyGotoTab.rawValue
+
+    /// Toggle fullscreen of current window
+    static let ghosttyToggleFullscreen = Notification.Name("com.mitchellh.ghostty.toggleFullscreen")
 }
 
 // Make the input enum hashable.

src/Surface.zig

@@ -1135,6 +1135,12 @@ pub fn keyCallback(
                     } else log.warn("runtime doesn't implement gotoSplit", .{});
                 },
 
+                .toggle_fullscreen => {
+                    if (@hasDecl(apprt.Surface, "toggleFullscreen")) {
+                        self.rt_surface.toggleFullscreen();
+                    } else log.warn("runtime doesn't implement toggleFullscreen", .{});
+                },
+
                 .close_surface => self.close(),
 
                 .close_window => {

src/apprt/embedded.zig

@@ -64,6 +64,9 @@ pub const App = struct {
 
         /// Goto tab
         goto_tab: ?*const fn (SurfaceUD, usize) callconv(.C) void = null,
+
+        /// Toggle fullscreen for current window.
+        toggle_fullscreen: ?*const fn (SurfaceUD) callconv(.C) void = null,
     };
 
     core_app: *CoreApp,
@@ -371,6 +374,15 @@ pub const Surface = struct {
         func(self.opts.userdata, n);
     }
 
+    pub fn toggleFullscreen(self: *Surface) void {
+        const func = self.app.opts.toggle_fullscreen orelse {
+            log.info("runtime embedder does not toggle_fullscreen", .{});
+            return;
+        };
+
+        func(self.opts.userdata);
+    }
+
     /// The cursor position from the host directly is in screen coordinates but
     /// all our interface works in pixels.
     fn cursorPosToPixels(self: *const Surface, pos: apprt.CursorPos) !apprt.CursorPos {

src/config.zig

@@ -441,6 +441,13 @@ pub const Config = struct {
             }
         }
 
+        // Toggle fullscreen
+        try result.keybind.set.put(
+            alloc,
+            .{ .key = .enter, .mods = ctrlOrSuper(.{}) },
+            .{ .toggle_fullscreen = {} },
+        );
+
         // Mac-specific keyboard bindings.
         if (comptime builtin.target.isDarwin()) {
             try result.keybind.set.put(

src/input/Binding.zig

@@ -207,6 +207,9 @@ pub const Action = union(enum) {
     /// Close the window, regardless of how many tabs or splits there may be.
     close_window: void,
 
+    /// Toggle fullscreen mode of window.
+    toggle_fullscreen: void,
+
     /// Quit ghostty
     quit: void,