Libadwaita gui (#19)

Major Update: Functional GUI Frontend!

src/frontend/gtk.rs

@@ -0,0 +1,93 @@
+mod window;
+mod client_object;
+mod client_row;
+
+use std::{io::Result, thread::{self, JoinHandle}};
+
+use crate::frontend::gtk::window::Window;
+
+use gtk::{prelude::*, IconTheme, gdk::Display, gio::{SimpleAction, SimpleActionGroup}, glib::clone, CssProvider};
+use adw::Application;
+use gtk::{gio, glib, prelude::ApplicationExt};
+
+use self::client_object::ClientObject;
+
+pub fn start() -> Result<JoinHandle<glib::ExitCode>> {
+    thread::Builder::new()
+        .name("gtk-thread".into())
+        .spawn(gtk_main)
+}
+
+fn gtk_main() -> glib::ExitCode {
+    gio::resources_register_include!("lan-mouse.gresource")
+        .expect("Failed to register resources.");
+
+    let app = Application::builder()
+        .application_id("de.feschber.lan-mouse")
+        .build();
+
+    app.connect_startup(|_| load_icons());
+    app.connect_startup(|_| load_css());
+    app.connect_activate(build_ui);
+
+    app.run()
+}
+
+fn load_css() {
+    let provider = CssProvider::new();
+    provider.load_from_resource("de/feschber/LanMouse/style.css");
+    gtk::style_context_add_provider_for_display(
+    &Display::default().expect("Could not connect to a display."),
+        &provider,
+        gtk::STYLE_PROVIDER_PRIORITY_APPLICATION,
+    );
+}
+
+fn load_icons() {
+    let icon_theme = IconTheme::for_display(&Display::default().expect("Could not connect to a display."));
+    icon_theme.add_resource_path("/de/feschber/LanMouse/icons");
+}
+
+fn build_ui(app: &Application) {
+    let window = Window::new(app);
+    let action_client_activate = SimpleAction::new(
+        "activate-client",
+        Some(&i32::static_variant_type()),
+    );
+    let action_client_delete = SimpleAction::new(
+        "delete-client",
+        Some(&i32::static_variant_type()),
+    );
+    action_client_activate.connect_activate(clone!(@weak window => move |_action, param| {
+        log::debug!("activate-client");
+        let index = param.unwrap()
+            .get::<i32>()
+            .unwrap();
+        let Some(client) = window.clients().item(index as u32) else {
+            return;
+        };
+        let client = client.downcast_ref::<ClientObject>().unwrap();
+        window.update_client(client);
+    }));
+    action_client_delete.connect_activate(clone!(@weak window => move |_action, param| {
+        log::debug!("delete-client");
+        let index = param.unwrap()
+            .get::<i32>()
+            .unwrap();
+        let Some(client) = window.clients().item(index as u32) else {
+            return;
+        };
+        let client = client.downcast_ref::<ClientObject>().unwrap();
+        window.update_client(client);
+        window.clients().remove(index as u32);
+        if window.clients().n_items() == 0 {
+            window.set_placeholder_visible(true);
+        }
+    }));
+
+    let actions = SimpleActionGroup::new();
+    window.insert_action_group("win", Some(&actions));
+    actions.add_action(&action_client_activate);
+    actions.add_action(&action_client_delete);
+    window.present();
+}