Add example: custom title bar

examples/Cargo.toml

@@ -130,6 +130,10 @@ path = "list_box_model/main.rs"
 name = "list_store"
 path = "list_store/main.rs"
 
+[[bin]]
+name = "header_bar"
+path = "header_bar/main.rs"
+
 [[bin]]
 name = "menu_bar"
 path = "menu_bar/main.rs"

examples/header_bar/README.md

@@ -0,0 +1,11 @@
+# HeaderBar example
+
+This example demonstrates how to use HeaderBar in windows.
+
+Run it by executing:
+
+```bash
+cargo run --bin header_bar
+```
+
+![screenshot](screenshot.png)

examples/header_bar/main.rs

@@ -0,0 +1,41 @@
+mod title_bar;
+
+use gtk::prelude::*;
+use gtk::{ApplicationWindow, CheckButton, Label, Stack, WindowPosition};
+use title_bar::TitleBar;
+
+fn build_ui(application: &gtk::Application) {
+    let window = ApplicationWindow::builder()
+        .application(application)
+        .title("HeaderBar example")
+        .window_position(WindowPosition::Center)
+        .build();
+
+    let stack = Stack::builder().expand(true).build();
+    window.add(&stack);
+
+    let check_button = CheckButton::builder()
+        .expand(true)
+        .label("check button")
+        .build();
+    stack.add_titled(&check_button, "check_button", "check button");
+    let label = Label::builder().label("Hello world").build();
+    stack.add_titled(&label, "label", "label");
+
+    let title_bar = TitleBar::new();
+    window.set_titlebar(Some(title_bar.header()));
+    title_bar.set_stack(&stack);
+
+    window.show_all();
+}
+
+fn main() {
+    let application = gtk::Application::new(
+        Some("com.github.gtk-rs.examples.menu_bar"),
+        Default::default(),
+    );
+
+    application.connect_activate(build_ui);
+
+    application.run();
+}

examples/header_bar/title_bar.rs

@@ -0,0 +1,27 @@
+use gtk::prelude::*;
+use gtk::{HeaderBar, Label, Stack, StackSwitcher};
+
+pub struct TitleBar {
+    header: HeaderBar,
+    menu: StackSwitcher,
+}
+
+impl TitleBar {
+    pub fn new() -> Self {
+        let menu = StackSwitcher::new();
+        let header = HeaderBar::builder()
+            .custom_title(&menu)
+            .show_close_button(true)
+            .build();
+        header.add(&Label::new(Some("Custom title")));
+        Self { header, menu }
+    }
+
+    pub fn set_stack(&self, stack: &Stack) {
+        self.menu.set_stack(Some(stack));
+    }
+
+    pub fn header(&self) -> &HeaderBar {
+        &self.header
+    }
+}