Initial commit

src/application.rs

@@ -0,0 +1,112 @@
+/* application.rs
+ *
+ * Copyright 2023 Unknown
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+use gtk::prelude::*;
+use adw::subclass::prelude::*;
+use gtk::{gio, glib};
+
+use crate::config::VERSION;
+use crate::MusicusWindow;
+
+mod imp {
+    use super::*;
+
+    #[derive(Debug, Default)]
+    pub struct MusicusApplication {}
+
+    #[glib::object_subclass]
+    impl ObjectSubclass for MusicusApplication {
+        const NAME: &'static str = "MusicusApplication";
+        type Type = super::MusicusApplication;
+        type ParentType = adw::Application;
+    }
+
+    impl ObjectImpl for MusicusApplication {
+        fn constructed(&self) {
+            self.parent_constructed();
+            let obj = self.obj();
+            obj.setup_gactions();
+            obj.set_accels_for_action("app.quit", &["<primary>q"]);
+        }
+    }
+
+    impl ApplicationImpl for MusicusApplication {
+        // We connect to the activate callback to create a window when the application
+        // has been launched. Additionally, this callback notifies us when the user
+        // tries to launch a "second instance" of the application. When they try
+        // to do that, we'll just present any existing window.
+        fn activate(&self) {
+            let application = self.obj();
+            // Get the current window or create one if necessary
+            let window = if let Some(window) = application.active_window() {
+                window
+            } else {
+                let window = MusicusWindow::new(&*application);
+                window.upcast()
+            };
+
+            // Ask the window manager/compositor to present the window
+            window.present();
+        }
+    }
+
+    impl GtkApplicationImpl for MusicusApplication {}
+    impl AdwApplicationImpl for MusicusApplication {}
+}
+
+glib::wrapper! {
+    pub struct MusicusApplication(ObjectSubclass<imp::MusicusApplication>)
+        @extends gio::Application, gtk::Application, adw::Application,
+        @implements gio::ActionGroup, gio::ActionMap;
+}
+
+impl MusicusApplication {
+    pub fn new(application_id: &str, flags: &gio::ApplicationFlags) -> Self {
+        glib::Object::builder()
+            .property("application-id", application_id)
+            .property("flags", flags)
+            .build()
+    }
+
+    fn setup_gactions(&self) {
+        let quit_action = gio::ActionEntry::builder("quit")
+            .activate(move |app: &Self, _, _| app.quit())
+            .build();
+        let about_action = gio::ActionEntry::builder("about")
+            .activate(move |app: &Self, _, _| app.show_about())
+            .build();
+        self.add_action_entries([quit_action, about_action]);
+    }
+
+    fn show_about(&self) {
+        let window = self.active_window().unwrap();
+        let about = adw::AboutWindow::builder()
+            .transient_for(&window)
+            .application_name("musicus")
+            .application_icon("de.johrpan.musicus")
+            .developer_name("Unknown")
+            .version(VERSION)
+            .developers(vec!["Unknown"])
+            .copyright("© 2023 Unknown")
+            .build();
+
+        about.present();
+    }
+}