From ccde429bde0c36dc0725cdddd75fc89ed8b111bd Mon Sep 17 00:00:00 2001
From: Mitchell Hashimoto <m@mitchellh.com>
Date: Sat, 26 Jul 2025 12:29:07 -0700
Subject: [PATCH 1/9] apprt/gtk-ng: toasts

---
 src/apprt/gtk-ng/class/surface.zig |  7 +++--
 src/apprt/gtk-ng/class/window.zig  | 42 +++++++++++++++++++++++++++++-
 src/apprt/gtk-ng/ui/1.5/window.blp | 11 +++++---
 src/apprt/structs.zig              | 19 +++++++++++++-
 4 files changed, 71 insertions(+), 8 deletions(-)

diff --git a/src/apprt/gtk-ng/class/surface.zig b/src/apprt/gtk-ng/class/surface.zig
index 7d162b4e9..0cefebc63 100644
--- a/src/apprt/gtk-ng/class/surface.zig
+++ b/src/apprt/gtk-ng/class/surface.zig
@@ -275,7 +275,10 @@ pub const Surface = extern struct {
             const impl = gobject.ext.defineSignal(
                 name,
                 Self,
-                &.{},
+                &.{
+                    apprt.Clipboard,
+                    [*:0]const u8,
+                },
                 void,
             );
         };
@@ -2236,7 +2239,7 @@ const Clipboard = struct {
             Surface.signals.@"clipboard-write".impl.emit(
                 self,
                 null,
-                .{},
+                .{ clipboard_type, val.ptr },
                 null,
             );
 
diff --git a/src/apprt/gtk-ng/class/window.zig b/src/apprt/gtk-ng/class/window.zig
index 875fad9b6..ac5555391 100644
--- a/src/apprt/gtk-ng/class/window.zig
+++ b/src/apprt/gtk-ng/class/window.zig
@@ -8,6 +8,7 @@ const gobject = @import("gobject");
 const gtk = @import("gtk");
 
 const i18n = @import("../../../os/main.zig").i18n;
+const apprt = @import("../../../apprt.zig");
 const input = @import("../../../input.zig");
 const CoreSurface = @import("../../../Surface.zig");
 const gtk_version = @import("../gtk_version.zig");
@@ -122,7 +123,8 @@ pub const Window = extern struct {
         config: ?*Config = null,
 
         // Template bindings
-        surface: *Surface = undefined,
+        surface: *Surface,
+        toast_overlay: *adw.ToastOverlay,
 
         pub var offset: c_int = 0;
     };
@@ -227,6 +229,18 @@ pub const Window = extern struct {
         };
     }
 
+    /// Queue a simple text-based toast. All text-based toasts share the
+    /// same timeout for consistency.
+    ///
+    // This is not `pub` because we should be using signals emitted by
+    // other widgets to trigger our toasts. Other objects should not
+    // trigger toasts directly.
+    fn addToast(self: *Window, title: [*:0]const u8) void {
+        const toast = adw.Toast.new(title);
+        toast.setTimeout(3);
+        self.private().toast_overlay.addToast(toast);
+    }
+
     //---------------------------------------------------------------
     // Properties
 
@@ -264,6 +278,7 @@ pub const Window = extern struct {
         _: *gobject.ParamSpec,
         self: *Self,
     ) callconv(.c) void {
+        self.addToast(i18n._("Reloaded the configuration"));
         self.syncAppearance();
     }
 
@@ -377,6 +392,29 @@ pub const Window = extern struct {
         self.as(gtk.Window).destroy();
     }
 
+    fn surfaceClipboardWrite(
+        _: *Surface,
+        clipboard_type: apprt.Clipboard,
+        text: [*:0]const u8,
+        self: *Self,
+    ) callconv(.c) void {
+        // We only toast for the standard clipboard.
+        if (clipboard_type != .standard) return;
+
+        // We only toast if configured to
+        const priv = self.private();
+        const config_obj = priv.config orelse return;
+        const config = config_obj.get();
+        if (!config.@"app-notifications".@"clipboard-copy") {
+            return;
+        }
+
+        if (text[0] != 0)
+            self.addToast(i18n._("Copied to clipboard"))
+        else
+            self.addToast(i18n._("Cleared clipboard"));
+    }
+
     fn surfaceCloseRequest(
         surface: *Surface,
         scope: *const Surface.CloseScope,
@@ -542,9 +580,11 @@ pub const Window = extern struct {
 
             // Bindings
             class.bindTemplateChildPrivate("surface", .{});
+            class.bindTemplateChildPrivate("toast_overlay", .{});
 
             // Template Callbacks
             class.bindTemplateCallback("close_request", &windowCloseRequest);
+            class.bindTemplateCallback("surface_clipboard_write", &surfaceClipboardWrite);
             class.bindTemplateCallback("surface_close_request", &surfaceCloseRequest);
             class.bindTemplateCallback("surface_toggle_fullscreen", &surfaceToggleFullscreen);
             class.bindTemplateCallback("surface_toggle_maximize", &surfaceToggleMaximize);
diff --git a/src/apprt/gtk-ng/ui/1.5/window.blp b/src/apprt/gtk-ng/ui/1.5/window.blp
index c8ffdade3..1e2345d95 100644
--- a/src/apprt/gtk-ng/ui/1.5/window.blp
+++ b/src/apprt/gtk-ng/ui/1.5/window.blp
@@ -43,10 +43,13 @@ template $GhosttyWindow: Adw.ApplicationWindow {
       visible: bind template.debug;
     }
 
-    $GhosttySurface surface {
-      close-request => $surface_close_request();
-      toggle-fullscreen => $surface_toggle_fullscreen();
-      toggle-maximize => $surface_toggle_maximize();
+    Adw.ToastOverlay toast_overlay {
+      $GhosttySurface surface {
+        close-request => $surface_close_request();
+        clipboard-write => $surface_clipboard_write();
+        toggle-fullscreen => $surface_toggle_fullscreen();
+        toggle-maximize => $surface_toggle_maximize();
+      }
     }
   };
 }
diff --git a/src/apprt/structs.zig b/src/apprt/structs.zig
index 1c3b28723..c9948f3ee 100644
--- a/src/apprt/structs.zig
+++ b/src/apprt/structs.zig
@@ -29,10 +29,27 @@ pub const IMEPos = struct {
 /// The clipboard type.
 ///
 /// If this is changed, you must also update ghostty.h
-pub const Clipboard = enum(u2) {
+pub const Clipboard = enum(Backing) {
     standard = 0, // ctrl+c/v
     selection = 1,
     primary = 2,
+
+    // Our backing isn't is as small as we can in Zig, but a full
+    // C int if we're binding to C APIs.
+    const Backing = switch (build_config.app_runtime) {
+        .gtk, .@"gtk-ng" => c_int,
+        else => u2,
+    };
+
+    /// Make this a valid gobject if we're in a GTK environment.
+    pub const getGObjectType = switch (build_config.app_runtime) {
+        .gtk, .@"gtk-ng" => @import("gobject").ext.defineEnum(
+            Clipboard,
+            .{ .name = "GhosttyApprtClipboard" },
+        ),
+
+        .none => void,
+    };
 };
 
 pub const ClipboardRequestType = enum(u8) {

From 53c7b8922fc6a8927596ae0ea34161febc42ba8a Mon Sep 17 00:00:00 2001
From: Mitchell Hashimoto <m@mitchellh.com>
Date: Sun, 27 Jul 2025 13:46:24 -0700
Subject: [PATCH 2/9] apprt/gtk-ng: reload config

---
 src/apprt/gtk-ng/class/application.zig | 142 ++++++++++++++++++-------
 src/apprt/gtk-ng/class/surface.zig     |   8 ++
 2 files changed, 111 insertions(+), 39 deletions(-)

diff --git a/src/apprt/gtk-ng/class/application.zig b/src/apprt/gtk-ng/class/application.zig
index 3682c5ba6..d27210b5c 100644
--- a/src/apprt/gtk-ng/class/application.zig
+++ b/src/apprt/gtk-ng/class/application.zig
@@ -508,6 +508,8 @@ pub const Application = extern struct {
 
             .progress_report => return Action.progressReport(target, value),
 
+            .reload_config => try Action.reloadConfig(self, target, value),
+
             .render => Action.render(target),
 
             .ring_bell => Action.ringBell(target),
@@ -530,7 +532,6 @@ pub const Application = extern struct {
             .equalize_splits,
             .goto_split,
             .open_config,
-            .reload_config,
             .inspector,
             .desktop_notification,
             .present_terminal,
@@ -573,29 +574,6 @@ pub const Application = extern struct {
         return true;
     }
 
-    /// Reload the configuration for the application and propagate it
-    /// across the entire application and all terminals.
-    pub fn reloadConfig(self: *Self) !void {
-        const alloc = self.allocator();
-
-        // Read our new config. We can always deinit this because
-        // we'll clone and store it if libghostty accepts it and
-        // emits a `config_change` action.
-        var config = try CoreConfig.load(alloc);
-        defer config.deinit();
-
-        // Notify the app that we've updated.
-        const priv = self.private();
-        try priv.core_app.updateConfig(priv.rt_app, &config);
-    }
-
-    /// Returns the configuration for this application.
-    ///
-    /// The reference count is increased.
-    pub fn getConfig(self: *Self) *Config {
-        return self.private().config.ref();
-    }
-
     /// Returns the core app associated with this application. This is
     /// not a reference-counted type so you should not store this.
     pub fn core(self: *Self) *CoreApp {
@@ -662,6 +640,31 @@ pub const Application = extern struct {
         }
     }
 
+    //---------------------------------------------------------------
+    // Properties
+
+    /// Returns the configuration for this application.
+    ///
+    /// The reference count is increased.
+    pub fn getConfig(self: *Self) *Config {
+        return self.private().config.ref();
+    }
+
+    /// Set the configuration for this application. The reference count
+    /// is increased on the new configuration and the old one is
+    /// unreferenced.
+    ///
+    /// If the config has errors this may show the config errors dialog.
+    fn setConfig(self: *Self, config: *Config) void {
+        const priv = self.private();
+        priv.config.unref();
+        priv.config = config.ref();
+        self.as(gobject.Object).notifyByPspec(properties.config.impl.param_spec);
+
+        // Show our errors if we have any
+        self.showConfigErrorsDialog();
+    }
+
     //---------------------------------------------------------------
     // Libghostty Callbacks
 
@@ -794,9 +797,10 @@ pub const Application = extern struct {
         // For action names:
         // https://docs.gtk.org/gio/type_func.Action.name_is_valid.html
         const actions = .{
-            .{ "quit", actionQuit, null },
             .{ "new-window", actionNewWindow, null },
             .{ "new-window-command", actionNewWindow, as_variant_type },
+            .{ "quit", actionQuit, null },
+            .{ "reload-config", actionReloadConfig, null },
         };
 
         const action_map = self.as(gio.ActionMap);
@@ -961,7 +965,12 @@ pub const Application = extern struct {
         const priv = self.private();
         priv.config_errors_dialog.set(null);
 
-        self.reloadConfig() catch |err| {
+        // Reload our config as if the app reloaded.
+        Action.reloadConfig(
+            self,
+            .app,
+            .{},
+        ) catch |err| {
             // If we fail to reload the configuration, then we want the
             // user to know it. For now we log but we should show another
             // GUI.
@@ -1016,6 +1025,17 @@ pub const Application = extern struct {
         dialog.present(null);
     }
 
+    fn actionReloadConfig(
+        _: *gio.SimpleAction,
+        _: ?*glib.Variant,
+        self: *Self,
+    ) callconv(.c) void {
+        const priv = self.private();
+        priv.core_app.performAction(self.rt(), .reload_config) catch |err| {
+            log.warn("error reloading config err={}", .{err});
+        };
+    }
+
     fn actionQuit(
         _: *gio.SimpleAction,
         _: ?*glib.Variant,
@@ -1138,21 +1158,11 @@ const Action = struct {
         // Wrap our config in a GObject. This will clone it.
         const alloc = self.allocator();
         const config_obj: *Config = try .new(alloc, new_config);
-        errdefer config_obj.unref();
+        defer config_obj.unref();
 
         switch (target) {
-            // TODO: when we implement surfaces in gtk-ng
-            .surface => @panic("TODO"),
-
-            .app => {
-                // Set it on our private
-                const priv = self.private();
-                priv.config.unref();
-                priv.config = config_obj;
-
-                // Show our errors if we have any
-                self.showConfigErrorsDialog();
-            },
+            .surface => |core| core.rt_surface.surface.setConfig(config_obj),
+            .app => self.setConfig(config_obj),
         }
     }
 
@@ -1219,6 +1229,19 @@ const Action = struct {
         parent: ?*CoreSurface,
     ) !void {
         const win = Window.new(self, parent);
+
+        // Setup a binding so that whenever our config changes so does the
+        // window. There's never a time when the window config should be out
+        // of sync with the application config.
+        _ = gobject.Object.bindProperty(
+            self.as(gobject.Object),
+            "config",
+            win.as(gobject.Object),
+            "config",
+            .{},
+        );
+
+        // Show the window
         gtk.Window.present(win.as(gtk.Window));
     }
 
@@ -1263,6 +1286,47 @@ const Action = struct {
         };
     }
 
+    /// Reload the configuration for the application and propagate it
+    /// across the entire application and all terminals.
+    pub fn reloadConfig(
+        self: *Application,
+        target: apprt.Target,
+        opts: apprt.action.ReloadConfig,
+    ) !void {
+        // Tell systemd that reloading has started.
+        systemd.notify.reloading();
+
+        // When we exit this function tell systemd that reloading has finished.
+        defer systemd.notify.ready();
+
+        // Get our config object.
+        const config: *Config = config: {
+            // Soft-reloading applies conditional logic to the existing loaded
+            // config so we return that as-is (but take a reference).
+            if (opts.soft) {
+                break :config self.private().config.ref();
+            }
+
+            // Hard reload, load a new config completely.
+            const alloc = self.allocator();
+            var config = try CoreConfig.load(alloc);
+            defer config.deinit();
+            break :config try .new(alloc, &config);
+        };
+        defer config.unref();
+
+        // Update the proper target. This will trigger a `confige_change`
+        // apprt action which will propagate the config properly to our
+        // property system.
+        switch (target) {
+            .app => try self.core().updateConfig(
+                self.rt(),
+                config.get(),
+            ),
+            .surface => |core| try core.updateConfig(config.get()),
+        }
+    }
+
     pub fn render(target: apprt.Target) void {
         switch (target) {
             .app => {},
diff --git a/src/apprt/gtk-ng/class/surface.zig b/src/apprt/gtk-ng/class/surface.zig
index 0cefebc63..98c470764 100644
--- a/src/apprt/gtk-ng/class/surface.zig
+++ b/src/apprt/gtk-ng/class/surface.zig
@@ -1193,6 +1193,14 @@ pub const Surface = extern struct {
         return self.private().pwd;
     }
 
+    /// Change the configuration for this surface.
+    pub fn setConfig(self: *Self, config: *Config) void {
+        const priv = self.private();
+        if (priv.config) |c| c.unref();
+        priv.config = config.ref();
+        self.as(gobject.Object).notifyByPspec(properties.config.impl.param_spec);
+    }
+
     fn propConfig(
         self: *Self,
         _: *gobject.ParamSpec,

From b011706aad44cde9c99e428dc8d85495becaeac5 Mon Sep 17 00:00:00 2001
From: Mitchell Hashimoto <m@mitchellh.com>
Date: Sun, 27 Jul 2025 14:12:26 -0700
Subject: [PATCH 3/9] suppressions

---
 valgrind.supp | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/valgrind.supp b/valgrind.supp
index 7f48b580a..c80530663 100644
--- a/valgrind.supp
+++ b/valgrind.supp
@@ -353,8 +353,7 @@
    match-leak-kinds: possible
    fun:*alloc
    fun:FcFontSet*
-   fun:FcFontSet*
-   fun:sort_in_thread.isra.0
+   ...
    fun:fc_thread_func
    fun:g_thread_proxy
    fun:start_thread

From c4de0010232ce8d5127f33322573fb34ab784f84 Mon Sep 17 00:00:00 2001
From: Mitchell Hashimoto <m@mitchellh.com>
Date: Sun, 27 Jul 2025 14:27:40 -0700
Subject: [PATCH 4/9] apprt/gtk-ng: avoid reading corrupt memory in event loop

---
 src/apprt/gtk-ng/class/application.zig | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/src/apprt/gtk-ng/class/application.zig b/src/apprt/gtk-ng/class/application.zig
index d27210b5c..3b4250956 100644
--- a/src/apprt/gtk-ng/class/application.zig
+++ b/src/apprt/gtk-ng/class/application.zig
@@ -361,11 +361,15 @@ pub const Application = extern struct {
         //
         // https://gitlab.gnome.org/GNOME/glib/-/blob/bd2ccc2f69ecfd78ca3f34ab59e42e2b462bad65/gio/gapplication.c#L2302
         const priv = self.private();
-        const config = priv.config.get();
-        if (config.@"initial-window") switch (config.@"launched-from".?) {
-            .desktop, .cli => self.as(gio.Application).activate(),
-            .dbus, .systemd => {},
-        };
+        {
+            // We need to scope any config access because once we run our
+            // event loop, this can change out from underneath us.
+            const config = priv.config.get();
+            if (config.@"initial-window") switch (config.@"launched-from".?) {
+                .desktop, .cli => self.as(gio.Application).activate(),
+                .dbus, .systemd => {},
+            };
+        }
 
         // If we are NOT the primary instance, then we never want to run.
         // This means that another instance of the GTK app is running and
@@ -393,6 +397,7 @@ pub const Application = extern struct {
             // Check if we must quit based on the current state.
             const must_quit = q: {
                 // If we are configured to always stay running, don't quit.
+                const config = priv.config.get();
                 if (!config.@"quit-after-last-window-closed") break :q false;
 
                 // If the quit timer has expired, quit.

From bf61f29f570208cf6e70e665e4334547c4b18f09 Mon Sep 17 00:00:00 2001
From: Mitchell Hashimoto <m@mitchellh.com>
Date: Sun, 27 Jul 2025 15:07:12 -0700
Subject: [PATCH 5/9] apprt/gtk-ng: create the privateObjFieldAccessor helper
 to unref

---
 src/apprt/gtk-ng/class.zig                    | 78 +++++++++++++++++++
 .../class/clipboard_confirmation_dialog.zig   | 14 +---
 src/apprt/gtk-ng/class/surface.zig            | 14 +---
 .../gtk-ng/class/surface_child_exited.zig     |  7 +-
 src/apprt/gtk-ng/class/window.zig             |  7 +-
 5 files changed, 84 insertions(+), 36 deletions(-)

diff --git a/src/apprt/gtk-ng/class.zig b/src/apprt/gtk-ng/class.zig
index 427789560..dc024c5cf 100644
--- a/src/apprt/gtk-ng/class.zig
+++ b/src/apprt/gtk-ng/class.zig
@@ -46,6 +46,84 @@ pub fn Common(
             }
         }).private else {};
 
+        /// A helper that can be used to create a property that reads and
+        /// writes a private boxed gobject field type.
+        ///
+        /// Reading the property will result in allocating a pointer and
+        /// setting it will free the previous pointer.
+        ///
+        /// The object class (Self) must still free the private field
+        /// in finalize!
+        pub fn privateBoxedFieldAccessor(
+            comptime name: []const u8,
+        ) gobject.ext.Accessor(
+            Self,
+            @FieldType(Private.?, name),
+        ) {
+            return .{
+                .getter = &struct {
+                    fn get(self: *Self, value: *gobject.Value) void {
+                        gobject.ext.Value.set(
+                            value,
+                            @field(private(self), name),
+                        );
+                    }
+                }.get,
+                .setter = &struct {
+                    fn set(self: *Self, value: *const gobject.Value) void {
+                        const priv = private(self);
+                        if (@field(priv, name)) |v| {
+                            glib.ext.destroy(v);
+                        }
+
+                        const T = @TypeOf(@field(priv, name));
+                        @field(
+                            priv,
+                            name,
+                        ) = gobject.ext.Value.dup(value, T);
+                    }
+                }.set,
+            };
+        }
+
+        /// A helper that can be used to create a property that reads and
+        /// writes a private field gobject field type (reference counted).
+        ///
+        /// Reading the property will result in taking a reference to the
+        /// value and writing the property will unref the previous value.
+        ///
+        /// The object class (Self) must still free the private field
+        /// in finalize!
+        pub fn privateObjFieldAccessor(
+            comptime name: []const u8,
+        ) gobject.ext.Accessor(
+            Self,
+            @FieldType(Private.?, name),
+        ) {
+            return .{
+                .getter = &struct {
+                    fn get(self: *Self, value: *gobject.Value) void {
+                        gobject.ext.Value.set(
+                            value,
+                            @field(private(self), name),
+                        );
+                    }
+                }.get,
+                .setter = &struct {
+                    fn set(self: *Self, value: *const gobject.Value) void {
+                        const priv = private(self);
+                        if (@field(priv, name)) |v| v.unref();
+
+                        const T = @TypeOf(@field(priv, name));
+                        @field(
+                            priv,
+                            name,
+                        ) = gobject.ext.Value.dup(value, T);
+                    }
+                }.set,
+            };
+        }
+
         /// A helper that can be used to create a property that reads and
         /// writes a private `?[:0]const u8` field type.
         ///
diff --git a/src/apprt/gtk-ng/class/clipboard_confirmation_dialog.zig b/src/apprt/gtk-ng/class/clipboard_confirmation_dialog.zig
index 7769d8935..cb9a27444 100644
--- a/src/apprt/gtk-ng/class/clipboard_confirmation_dialog.zig
+++ b/src/apprt/gtk-ng/class/clipboard_confirmation_dialog.zig
@@ -59,12 +59,7 @@ pub const ClipboardConfirmationDialog = extern struct {
                 .{
                     .nick = "Request",
                     .blurb = "The clipboard request.",
-                    .accessor = gobject.ext.privateFieldAccessor(
-                        Self,
-                        Private,
-                        &Private.offset,
-                        "request",
-                    ),
+                    .accessor = C.privateBoxedFieldAccessor("request"),
                 },
             );
         };
@@ -78,12 +73,7 @@ pub const ClipboardConfirmationDialog = extern struct {
                 .{
                     .nick = "Clipboard Contents",
                     .blurb = "The clipboard contents being read/written.",
-                    .accessor = gobject.ext.privateFieldAccessor(
-                        Self,
-                        Private,
-                        &Private.offset,
-                        "clipboard_contents",
-                    ),
+                    .accessor = C.privateObjFieldAccessor("clipboard_contents"),
                 },
             );
         };
diff --git a/src/apprt/gtk-ng/class/surface.zig b/src/apprt/gtk-ng/class/surface.zig
index 98c470764..bb432cf6f 100644
--- a/src/apprt/gtk-ng/class/surface.zig
+++ b/src/apprt/gtk-ng/class/surface.zig
@@ -50,12 +50,7 @@ pub const Surface = extern struct {
                 .{
                     .nick = "Config",
                     .blurb = "The configuration that this surface is using.",
-                    .accessor = gobject.ext.privateFieldAccessor(
-                        Self,
-                        Private,
-                        &Private.offset,
-                        "config",
-                    ),
+                    .accessor = C.privateObjFieldAccessor("config"),
                 },
             );
         };
@@ -89,12 +84,7 @@ pub const Surface = extern struct {
                 .{
                     .nick = "Desired Font Size",
                     .blurb = "The desired font size, only affects initialization.",
-                    .accessor = gobject.ext.privateFieldAccessor(
-                        Self,
-                        Private,
-                        &Private.offset,
-                        "font_size_request",
-                    ),
+                    .accessor = C.privateBoxedFieldAccessor("font_size_request"),
                 },
             );
         };
diff --git a/src/apprt/gtk-ng/class/surface_child_exited.zig b/src/apprt/gtk-ng/class/surface_child_exited.zig
index 693425c09..3bf29285f 100644
--- a/src/apprt/gtk-ng/class/surface_child_exited.zig
+++ b/src/apprt/gtk-ng/class/surface_child_exited.zig
@@ -42,12 +42,7 @@ const SurfaceChildExitedBanner = extern struct {
                 .{
                     .nick = "Data",
                     .blurb = "The child exit data.",
-                    .accessor = gobject.ext.privateFieldAccessor(
-                        Self,
-                        Private,
-                        &Private.offset,
-                        "data",
-                    ),
+                    .accessor = C.privateBoxedFieldAccessor("data"),
                 },
             );
         };
diff --git a/src/apprt/gtk-ng/class/window.zig b/src/apprt/gtk-ng/class/window.zig
index ac5555391..d822bfd49 100644
--- a/src/apprt/gtk-ng/class/window.zig
+++ b/src/apprt/gtk-ng/class/window.zig
@@ -69,12 +69,7 @@ pub const Window = extern struct {
                 .{
                     .nick = "Config",
                     .blurb = "The configuration that this surface is using.",
-                    .accessor = gobject.ext.privateFieldAccessor(
-                        Self,
-                        Private,
-                        &Private.offset,
-                        "config",
-                    ),
+                    .accessor = C.privateObjFieldAccessor("config"),
                 },
             );
         };

From b5a34f5f3c2e47a890e0b0ba6d76e97ca7887a9b Mon Sep 17 00:00:00 2001
From: "dependabot[bot]" <49699333+dependabot[bot]@users.noreply.github.com>
Date: Mon, 28 Jul 2025 01:05:10 +0000
Subject: [PATCH 6/9] build(deps): bump cachix/install-nix-action from 31.5.1
 to 31.5.2

Bumps [cachix/install-nix-action](https://github.com/cachix/install-nix-action) from 31.5.1 to 31.5.2.
- [Release notes](https://github.com/cachix/install-nix-action/releases)
- [Changelog](https://github.com/cachix/install-nix-action/blob/master/RELEASE.md)
- [Commits](https://github.com/cachix/install-nix-action/compare/c134e4c9e34bac6cab09cf239815f9339aaaf84e...fc6e360bedc9ee72d75e701397f0bb30dce77568)

---
updated-dependencies:
- dependency-name: cachix/install-nix-action
  dependency-version: 31.5.2
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
---
 .github/workflows/nix.yml                 |  2 +-
 .github/workflows/release-pr.yml          |  4 +-
 .github/workflows/release-tag.yml         |  4 +-
 .github/workflows/release-tip.yml         |  8 ++--
 .github/workflows/test.yml                | 46 +++++++++++------------
 .github/workflows/update-colorschemes.yml |  2 +-
 6 files changed, 33 insertions(+), 33 deletions(-)

diff --git a/.github/workflows/nix.yml b/.github/workflows/nix.yml
index 003a3f593..2a1c98d48 100644
--- a/.github/workflows/nix.yml
+++ b/.github/workflows/nix.yml
@@ -42,7 +42,7 @@ jobs:
             /nix
             /zig
       - name: Setup Nix
-        uses: cachix/install-nix-action@c134e4c9e34bac6cab09cf239815f9339aaaf84e # v31.5.1
+        uses: cachix/install-nix-action@fc6e360bedc9ee72d75e701397f0bb30dce77568 # v31.5.2
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - uses: cachix/cachix-action@0fc020193b5a1fa3ac4575aa3a7d3aa6a35435ad # v16
diff --git a/.github/workflows/release-pr.yml b/.github/workflows/release-pr.yml
index 3b653cedd..d920b92f1 100644
--- a/.github/workflows/release-pr.yml
+++ b/.github/workflows/release-pr.yml
@@ -57,7 +57,7 @@ jobs:
           fetch-depth: 0
 
       # Install Nix and use that to run our tests so our environment matches exactly.
-      - uses: cachix/install-nix-action@c134e4c9e34bac6cab09cf239815f9339aaaf84e # v31.5.1
+      - uses: cachix/install-nix-action@fc6e360bedc9ee72d75e701397f0bb30dce77568 # v31.5.2
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - uses: cachix/cachix-action@0fc020193b5a1fa3ac4575aa3a7d3aa6a35435ad # v16
@@ -211,7 +211,7 @@ jobs:
           fetch-depth: 0
 
       # Install Nix and use that to run our tests so our environment matches exactly.
-      - uses: cachix/install-nix-action@c134e4c9e34bac6cab09cf239815f9339aaaf84e # v31.5.1
+      - uses: cachix/install-nix-action@fc6e360bedc9ee72d75e701397f0bb30dce77568 # v31.5.2
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - uses: cachix/cachix-action@0fc020193b5a1fa3ac4575aa3a7d3aa6a35435ad # v16
diff --git a/.github/workflows/release-tag.yml b/.github/workflows/release-tag.yml
index f695d08a2..ba1095896 100644
--- a/.github/workflows/release-tag.yml
+++ b/.github/workflows/release-tag.yml
@@ -89,7 +89,7 @@ jobs:
             /nix
             /zig
 
-      - uses: cachix/install-nix-action@c134e4c9e34bac6cab09cf239815f9339aaaf84e # v31.5.1
+      - uses: cachix/install-nix-action@fc6e360bedc9ee72d75e701397f0bb30dce77568 # v31.5.2
         with:
           nix_path: nixpkgs=channel:nixos-unstable
 
@@ -130,7 +130,7 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
 
-      - uses: cachix/install-nix-action@c134e4c9e34bac6cab09cf239815f9339aaaf84e # v31.5.1
+      - uses: cachix/install-nix-action@fc6e360bedc9ee72d75e701397f0bb30dce77568 # v31.5.2
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - uses: cachix/cachix-action@0fc020193b5a1fa3ac4575aa3a7d3aa6a35435ad # v16
diff --git a/.github/workflows/release-tip.yml b/.github/workflows/release-tip.yml
index 6440c8fe1..03f6076a3 100644
--- a/.github/workflows/release-tip.yml
+++ b/.github/workflows/release-tip.yml
@@ -112,7 +112,7 @@ jobs:
           path: |
             /nix
             /zig
-      - uses: cachix/install-nix-action@c134e4c9e34bac6cab09cf239815f9339aaaf84e # v31.5.1
+      - uses: cachix/install-nix-action@fc6e360bedc9ee72d75e701397f0bb30dce77568 # v31.5.2
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - uses: cachix/cachix-action@0fc020193b5a1fa3ac4575aa3a7d3aa6a35435ad # v16
@@ -164,7 +164,7 @@ jobs:
           fetch-depth: 0
 
       # Install Nix and use that to run our tests so our environment matches exactly.
-      - uses: cachix/install-nix-action@c134e4c9e34bac6cab09cf239815f9339aaaf84e # v31.5.1
+      - uses: cachix/install-nix-action@fc6e360bedc9ee72d75e701397f0bb30dce77568 # v31.5.2
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - uses: cachix/cachix-action@0fc020193b5a1fa3ac4575aa3a7d3aa6a35435ad # v16
@@ -384,7 +384,7 @@ jobs:
           fetch-depth: 0
 
       # Install Nix and use that to run our tests so our environment matches exactly.
-      - uses: cachix/install-nix-action@c134e4c9e34bac6cab09cf239815f9339aaaf84e # v31.5.1
+      - uses: cachix/install-nix-action@fc6e360bedc9ee72d75e701397f0bb30dce77568 # v31.5.2
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - uses: cachix/cachix-action@0fc020193b5a1fa3ac4575aa3a7d3aa6a35435ad # v16
@@ -564,7 +564,7 @@ jobs:
           fetch-depth: 0
 
       # Install Nix and use that to run our tests so our environment matches exactly.
-      - uses: cachix/install-nix-action@c134e4c9e34bac6cab09cf239815f9339aaaf84e # v31.5.1
+      - uses: cachix/install-nix-action@fc6e360bedc9ee72d75e701397f0bb30dce77568 # v31.5.2
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - uses: cachix/cachix-action@0fc020193b5a1fa3ac4575aa3a7d3aa6a35435ad # v16
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index d2a66b77a..d2a6ea8f9 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -77,7 +77,7 @@ jobs:
             /zig
 
       # Install Nix and use that to run our tests so our environment matches exactly.
-      - uses: cachix/install-nix-action@c134e4c9e34bac6cab09cf239815f9339aaaf84e # v31.5.1
+      - uses: cachix/install-nix-action@fc6e360bedc9ee72d75e701397f0bb30dce77568 # v31.5.2
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - uses: cachix/cachix-action@0fc020193b5a1fa3ac4575aa3a7d3aa6a35435ad # v16
@@ -108,7 +108,7 @@ jobs:
             /zig
 
       # Install Nix and use that to run our tests so our environment matches exactly.
-      - uses: cachix/install-nix-action@c134e4c9e34bac6cab09cf239815f9339aaaf84e # v31.5.1
+      - uses: cachix/install-nix-action@fc6e360bedc9ee72d75e701397f0bb30dce77568 # v31.5.2
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - uses: cachix/cachix-action@0fc020193b5a1fa3ac4575aa3a7d3aa6a35435ad # v16
@@ -144,7 +144,7 @@ jobs:
             /zig
 
       # Install Nix and use that to run our tests so our environment matches exactly.
-      - uses: cachix/install-nix-action@c134e4c9e34bac6cab09cf239815f9339aaaf84e # v31.5.1
+      - uses: cachix/install-nix-action@fc6e360bedc9ee72d75e701397f0bb30dce77568 # v31.5.2
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - uses: cachix/cachix-action@0fc020193b5a1fa3ac4575aa3a7d3aa6a35435ad # v16
@@ -173,7 +173,7 @@ jobs:
             /zig
 
       # Install Nix and use that to run our tests so our environment matches exactly.
-      - uses: cachix/install-nix-action@c134e4c9e34bac6cab09cf239815f9339aaaf84e # v31.5.1
+      - uses: cachix/install-nix-action@fc6e360bedc9ee72d75e701397f0bb30dce77568 # v31.5.2
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - uses: cachix/cachix-action@0fc020193b5a1fa3ac4575aa3a7d3aa6a35435ad # v16
@@ -206,7 +206,7 @@ jobs:
             /zig
 
       # Install Nix and use that to run our tests so our environment matches exactly.
-      - uses: cachix/install-nix-action@c134e4c9e34bac6cab09cf239815f9339aaaf84e # v31.5.1
+      - uses: cachix/install-nix-action@fc6e360bedc9ee72d75e701397f0bb30dce77568 # v31.5.2
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - uses: cachix/cachix-action@0fc020193b5a1fa3ac4575aa3a7d3aa6a35435ad # v16
@@ -250,7 +250,7 @@ jobs:
             /zig
 
       # Install Nix and use that to run our tests so our environment matches exactly.
-      - uses: cachix/install-nix-action@c134e4c9e34bac6cab09cf239815f9339aaaf84e # v31.5.1
+      - uses: cachix/install-nix-action@fc6e360bedc9ee72d75e701397f0bb30dce77568 # v31.5.2
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - uses: cachix/cachix-action@0fc020193b5a1fa3ac4575aa3a7d3aa6a35435ad # v16
@@ -279,7 +279,7 @@ jobs:
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
 
       # Install Nix and use that to run our tests so our environment matches exactly.
-      - uses: cachix/install-nix-action@c134e4c9e34bac6cab09cf239815f9339aaaf84e # v31.5.1
+      - uses: cachix/install-nix-action@fc6e360bedc9ee72d75e701397f0bb30dce77568 # v31.5.2
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - uses: cachix/cachix-action@0fc020193b5a1fa3ac4575aa3a7d3aa6a35435ad # v16
@@ -362,7 +362,7 @@ jobs:
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
 
       # Install Nix and use that to run our tests so our environment matches exactly.
-      - uses: cachix/install-nix-action@c134e4c9e34bac6cab09cf239815f9339aaaf84e # v31.5.1
+      - uses: cachix/install-nix-action@fc6e360bedc9ee72d75e701397f0bb30dce77568 # v31.5.2
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - uses: cachix/cachix-action@0fc020193b5a1fa3ac4575aa3a7d3aa6a35435ad # v16
@@ -516,7 +516,7 @@ jobs:
             /zig
 
       # Install Nix and use that to run our tests so our environment matches exactly.
-      - uses: cachix/install-nix-action@c134e4c9e34bac6cab09cf239815f9339aaaf84e # v31.5.1
+      - uses: cachix/install-nix-action@fc6e360bedc9ee72d75e701397f0bb30dce77568 # v31.5.2
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - uses: cachix/cachix-action@0fc020193b5a1fa3ac4575aa3a7d3aa6a35435ad # v16
@@ -561,7 +561,7 @@ jobs:
             /zig
 
       # Install Nix and use that to run our tests so our environment matches exactly.
-      - uses: cachix/install-nix-action@c134e4c9e34bac6cab09cf239815f9339aaaf84e # v31.5.1
+      - uses: cachix/install-nix-action@fc6e360bedc9ee72d75e701397f0bb30dce77568 # v31.5.2
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - uses: cachix/cachix-action@0fc020193b5a1fa3ac4575aa3a7d3aa6a35435ad # v16
@@ -610,7 +610,7 @@ jobs:
             /zig
 
       # Install Nix and use that to run our tests so our environment matches exactly.
-      - uses: cachix/install-nix-action@c134e4c9e34bac6cab09cf239815f9339aaaf84e # v31.5.1
+      - uses: cachix/install-nix-action@fc6e360bedc9ee72d75e701397f0bb30dce77568 # v31.5.2
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - uses: cachix/cachix-action@0fc020193b5a1fa3ac4575aa3a7d3aa6a35435ad # v16
@@ -658,7 +658,7 @@ jobs:
             /zig
 
       # Install Nix and use that to run our tests so our environment matches exactly.
-      - uses: cachix/install-nix-action@c134e4c9e34bac6cab09cf239815f9339aaaf84e # v31.5.1
+      - uses: cachix/install-nix-action@fc6e360bedc9ee72d75e701397f0bb30dce77568 # v31.5.2
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - uses: cachix/cachix-action@0fc020193b5a1fa3ac4575aa3a7d3aa6a35435ad # v16
@@ -678,7 +678,7 @@ jobs:
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
 
       # Install Nix and use that to run our tests so our environment matches exactly.
-      - uses: cachix/install-nix-action@c134e4c9e34bac6cab09cf239815f9339aaaf84e # v31.5.1
+      - uses: cachix/install-nix-action@fc6e360bedc9ee72d75e701397f0bb30dce77568 # v31.5.2
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - uses: cachix/cachix-action@0fc020193b5a1fa3ac4575aa3a7d3aa6a35435ad # v16
@@ -711,7 +711,7 @@ jobs:
           path: |
             /nix
             /zig
-      - uses: cachix/install-nix-action@c134e4c9e34bac6cab09cf239815f9339aaaf84e # v31.5.1
+      - uses: cachix/install-nix-action@fc6e360bedc9ee72d75e701397f0bb30dce77568 # v31.5.2
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - uses: cachix/cachix-action@0fc020193b5a1fa3ac4575aa3a7d3aa6a35435ad # v16
@@ -739,7 +739,7 @@ jobs:
           path: |
             /nix
             /zig
-      - uses: cachix/install-nix-action@c134e4c9e34bac6cab09cf239815f9339aaaf84e # v31.5.1
+      - uses: cachix/install-nix-action@fc6e360bedc9ee72d75e701397f0bb30dce77568 # v31.5.2
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - uses: cachix/cachix-action@0fc020193b5a1fa3ac4575aa3a7d3aa6a35435ad # v16
@@ -766,7 +766,7 @@ jobs:
           path: |
             /nix
             /zig
-      - uses: cachix/install-nix-action@c134e4c9e34bac6cab09cf239815f9339aaaf84e # v31.5.1
+      - uses: cachix/install-nix-action@fc6e360bedc9ee72d75e701397f0bb30dce77568 # v31.5.2
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - uses: cachix/cachix-action@0fc020193b5a1fa3ac4575aa3a7d3aa6a35435ad # v16
@@ -793,7 +793,7 @@ jobs:
           path: |
             /nix
             /zig
-      - uses: cachix/install-nix-action@c134e4c9e34bac6cab09cf239815f9339aaaf84e # v31.5.1
+      - uses: cachix/install-nix-action@fc6e360bedc9ee72d75e701397f0bb30dce77568 # v31.5.2
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - uses: cachix/cachix-action@0fc020193b5a1fa3ac4575aa3a7d3aa6a35435ad # v16
@@ -820,7 +820,7 @@ jobs:
           path: |
             /nix
             /zig
-      - uses: cachix/install-nix-action@c134e4c9e34bac6cab09cf239815f9339aaaf84e # v31.5.1
+      - uses: cachix/install-nix-action@fc6e360bedc9ee72d75e701397f0bb30dce77568 # v31.5.2
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - uses: cachix/cachix-action@0fc020193b5a1fa3ac4575aa3a7d3aa6a35435ad # v16
@@ -847,7 +847,7 @@ jobs:
           path: |
             /nix
             /zig
-      - uses: cachix/install-nix-action@c134e4c9e34bac6cab09cf239815f9339aaaf84e # v31.5.1
+      - uses: cachix/install-nix-action@fc6e360bedc9ee72d75e701397f0bb30dce77568 # v31.5.2
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - uses: cachix/cachix-action@0fc020193b5a1fa3ac4575aa3a7d3aa6a35435ad # v16
@@ -881,7 +881,7 @@ jobs:
           path: |
             /nix
             /zig
-      - uses: cachix/install-nix-action@c134e4c9e34bac6cab09cf239815f9339aaaf84e # v31.5.1
+      - uses: cachix/install-nix-action@fc6e360bedc9ee72d75e701397f0bb30dce77568 # v31.5.2
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - uses: cachix/cachix-action@0fc020193b5a1fa3ac4575aa3a7d3aa6a35435ad # v16
@@ -908,7 +908,7 @@ jobs:
           path: |
             /nix
             /zig
-      - uses: cachix/install-nix-action@c134e4c9e34bac6cab09cf239815f9339aaaf84e # v31.5.1
+      - uses: cachix/install-nix-action@fc6e360bedc9ee72d75e701397f0bb30dce77568 # v31.5.2
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - uses: cachix/cachix-action@0fc020193b5a1fa3ac4575aa3a7d3aa6a35435ad # v16
@@ -945,7 +945,7 @@ jobs:
             /zig
 
       # Install Nix and use that to run our tests so our environment matches exactly.
-      - uses: cachix/install-nix-action@c134e4c9e34bac6cab09cf239815f9339aaaf84e # v31.5.1
+      - uses: cachix/install-nix-action@fc6e360bedc9ee72d75e701397f0bb30dce77568 # v31.5.2
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - uses: cachix/cachix-action@0fc020193b5a1fa3ac4575aa3a7d3aa6a35435ad # v16
@@ -1002,7 +1002,7 @@ jobs:
             /nix
             /zig
       - name: Setup Nix
-        uses: cachix/install-nix-action@c134e4c9e34bac6cab09cf239815f9339aaaf84e # v31.5.1
+        uses: cachix/install-nix-action@fc6e360bedc9ee72d75e701397f0bb30dce77568 # v31.5.2
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - uses: cachix/cachix-action@0fc020193b5a1fa3ac4575aa3a7d3aa6a35435ad # v16
diff --git a/.github/workflows/update-colorschemes.yml b/.github/workflows/update-colorschemes.yml
index 71f94131f..80d99b23f 100644
--- a/.github/workflows/update-colorschemes.yml
+++ b/.github/workflows/update-colorschemes.yml
@@ -29,7 +29,7 @@ jobs:
             /zig
 
       - name: Setup Nix
-        uses: cachix/install-nix-action@c134e4c9e34bac6cab09cf239815f9339aaaf84e # v31.5.1
+        uses: cachix/install-nix-action@fc6e360bedc9ee72d75e701397f0bb30dce77568 # v31.5.2
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - uses: cachix/cachix-action@0fc020193b5a1fa3ac4575aa3a7d3aa6a35435ad # v16

From 92c004cb25cfa6c3a09b39688802e8294eade123 Mon Sep 17 00:00:00 2001
From: "Jeffrey C. Ollie" <jeff@ocjtech.us>
Date: Sun, 27 Jul 2025 22:05:16 -0500
Subject: [PATCH 7/9] gtk-ng: add/remove 'background' css class from window
 depending on opacity

---
 src/apprt/gtk-ng/class/window.zig  | 45 ++++++++++++++++++++++++++++++
 src/apprt/gtk-ng/ui/1.5/window.blp |  1 +
 2 files changed, 46 insertions(+)

diff --git a/src/apprt/gtk-ng/class/window.zig b/src/apprt/gtk-ng/class/window.zig
index d822bfd49..ce40462f8 100644
--- a/src/apprt/gtk-ng/class/window.zig
+++ b/src/apprt/gtk-ng/class/window.zig
@@ -111,6 +111,23 @@ pub const Window = extern struct {
                 },
             );
         };
+
+        pub const @"background-opaque" = struct {
+            pub const name = "background-opaque";
+            const impl = gobject.ext.defineProperty(
+                name,
+                Self,
+                bool,
+                .{
+                    .nick = "Background Opaque",
+                    .blurb = "True if the background should be opaque.",
+                    .default = true,
+                    .accessor = gobject.ext.typedAccessor(Self, bool, .{
+                        .getter = Self.getBackgroundOpaque,
+                    }),
+                },
+            );
+        };
     };
 
     const Private = struct {
@@ -209,6 +226,16 @@ pub const Window = extern struct {
 
         // Trigger our headerbar visibility to refresh
         self.as(gobject.Object).notifyByPspec(properties.@"headerbar-visible".impl.param_spec);
+        // Trigger background opacity to refresh
+        self.as(gobject.Object).notifyByPspec(properties.@"background-opaque".impl.param_spec);
+    }
+
+    fn toggleCssClass(self: *Window, class: [:0]const u8, value: bool) void {
+        const widget = self.as(gtk.Widget);
+        if (value)
+            widget.addCssClass(class.ptr)
+        else
+            widget.removeCssClass(class.ptr);
     }
 
     /// Perform a binding action on the window's active surface.
@@ -268,6 +295,12 @@ pub const Window = extern struct {
         return config.@"gtk-titlebar";
     }
 
+    fn getBackgroundOpaque(self: *Self) bool {
+        const priv = self.private();
+        const config = (priv.config orelse return true).get();
+        return config.@"background-opacity" >= 1.0;
+    }
+
     fn propConfig(
         _: *adw.ApplicationWindow,
         _: *gobject.ParamSpec,
@@ -325,6 +358,16 @@ pub const Window = extern struct {
         action.setEnabled(@intFromBool(has_selection));
     }
 
+    /// Add or remove "background" CSS class depending on if the background
+    /// should be opaque.
+    fn propBackgroundOpaque(
+        _: *adw.ApplicationWindow,
+        _: *gobject.ParamSpec,
+        self: *Self,
+    ) callconv(.c) void {
+        self.toggleCssClass("background", self.getBackgroundOpaque());
+    }
+
     //---------------------------------------------------------------
     // Virtual methods
 
@@ -571,6 +614,7 @@ pub const Window = extern struct {
                 properties.config.impl,
                 properties.debug.impl,
                 properties.@"headerbar-visible".impl,
+                properties.@"background-opaque".impl,
             });
 
             // Bindings
@@ -587,6 +631,7 @@ pub const Window = extern struct {
             class.bindTemplateCallback("notify_fullscreened", &propFullscreened);
             class.bindTemplateCallback("notify_maximized", &propMaximized);
             class.bindTemplateCallback("notify_menu_active", &propMenuActive);
+            class.bindTemplateCallback("notify_background_opaque", &propBackgroundOpaque);
 
             // Virtual methods
             gobject.Object.virtual_methods.dispose.implement(class, &dispose);
diff --git a/src/apprt/gtk-ng/ui/1.5/window.blp b/src/apprt/gtk-ng/ui/1.5/window.blp
index 1e2345d95..a7f5d82e0 100644
--- a/src/apprt/gtk-ng/ui/1.5/window.blp
+++ b/src/apprt/gtk-ng/ui/1.5/window.blp
@@ -10,6 +10,7 @@ template $GhosttyWindow: Adw.ApplicationWindow {
   notify::config => $notify_config();
   notify::fullscreened => $notify_fullscreened();
   notify::maximized => $notify_maximized();
+  notify::background-opaque => $notify_background_opaque();
   default-width: 800;
   default-height: 600;
   // GTK4 grabs F10 input by default to focus the menubar icon. We want

From 4c01d776c5356485b63d351860194057aa54322b Mon Sep 17 00:00:00 2001
From: Mitchell Hashimoto <m@mitchellh.com>
Date: Sun, 27 Jul 2025 21:08:13 -0700
Subject: [PATCH 8/9] valgrind: make some GSK renderer supressions less strict

---
 valgrind.supp | 1 -
 1 file changed, 1 deletion(-)

diff --git a/valgrind.supp b/valgrind.supp
index c80530663..3b074607d 100644
--- a/valgrind.supp
+++ b/valgrind.supp
@@ -133,7 +133,6 @@
    fun:gsk_gpu_frame_do_upload_texture
    fun:gsk_gpu_lookup_texture
    ...
-   fun:gsk_gpu_node_processor_add_first_node
    fun:gsk_gpu_node_processor_process
    fun:gsk_gpu_frame_render
    fun:gsk_gpu_renderer_render

From 96573917a06cde0a5c7c02d8c22aac3fd4ed10f2 Mon Sep 17 00:00:00 2001
From: "Jeffrey C. Ollie" <jeff@ocjtech.us>
Date: Sun, 27 Jul 2025 23:26:05 -0500
Subject: [PATCH 9/9] gtk-ng: fix up background of resize and url overlays

PR #8088 had the unexpected side-effect of making the resize and url
overlays transparent as well. This PR fixes that.
---
 src/apprt/gtk-ng/css/style.css             | 4 ++--
 src/apprt/gtk-ng/ui/1.2/resize-overlay.blp | 5 +++++
 src/apprt/gtk-ng/ui/1.2/surface.blp        | 8 +++-----
 3 files changed, 10 insertions(+), 7 deletions(-)

diff --git a/src/apprt/gtk-ng/css/style.css b/src/apprt/gtk-ng/css/style.css
index 314a96fae..4aa03c598 100644
--- a/src/apprt/gtk-ng/css/style.css
+++ b/src/apprt/gtk-ng/css/style.css
@@ -29,12 +29,12 @@ label.url-overlay.right {
 /*
  * GhosttySurface resize overlay
  */
-.size-overlay label {
+label.resize-overlay {
   padding: 4px 8px 4px 8px;
   border-radius: 6px 6px 6px 6px;
   outline-style: solid;
-  outline-width: 1px;
   outline-color: #555555;
+  outline-width: 1px;
 }
 
 /*
diff --git a/src/apprt/gtk-ng/ui/1.2/resize-overlay.blp b/src/apprt/gtk-ng/ui/1.2/resize-overlay.blp
index a80b63fb3..5c4a94a8f 100644
--- a/src/apprt/gtk-ng/ui/1.2/resize-overlay.blp
+++ b/src/apprt/gtk-ng/ui/1.2/resize-overlay.blp
@@ -11,6 +11,11 @@ template $GhosttyResizeOverlay: Adw.Bin {
   // See surface.blp for why we need to wrap this.
   Adw.Bin {
     Label label {
+      styles [
+        "background",
+        "resize-overlay",
+      ]
+
       focusable: false;
       focus-on-click: false;
       justify: center;
diff --git a/src/apprt/gtk-ng/ui/1.2/surface.blp b/src/apprt/gtk-ng/ui/1.2/surface.blp
index 3bf856c48..4cbbef097 100644
--- a/src/apprt/gtk-ng/ui/1.2/surface.blp
+++ b/src/apprt/gtk-ng/ui/1.2/surface.blp
@@ -47,15 +47,12 @@ template $GhosttySurface: Adw.Bin {
     }
 
     [overlay]
-    $GhosttyResizeOverlay resize_overlay {
-      styles [
-        "size-overlay",
-      ]
-    }
+    $GhosttyResizeOverlay resize_overlay {}
 
     [overlay]
     Label url_left {
       styles [
+        "background",
         "url-overlay",
       ]
 
@@ -73,6 +70,7 @@ template $GhosttySurface: Adw.Bin {
     [overlay]
     Label url_right {
       styles [
+        "background",
         "url-overlay",
       ]