Add about dialog

src/config.rs.in

@@ -1 +1,2 @@
+pub static VERSION: &str = @VERSION@;
 pub static LOCALEDIR: &str = @LOCALEDIR@;

src/dialogs/about.rs

@@ -0,0 +1,22 @@
+use crate::config;
+use gettextrs::gettext;
+use gtk::prelude::*;
+
+pub fn show_about_dialog<W: IsA<gtk::Window>>(parent: &W) {
+    let dialog = gtk::AboutDialogBuilder::new()
+        .transient_for(parent)
+        .modal(true)
+        .logo_icon_name("de.johrpan.musicus")
+        .program_name(&gettext("Musicus"))
+        .version(config::VERSION)
+        .comments(&gettext("The classical music player and organizer."))
+        .website("https://github.com/johrpan/musicus")
+        .website_label(&gettext("Further information and source code"))
+        .copyright("© 2020 Elias Projahn")
+        .license_type(gtk::License::Agpl30)
+        .authors(vec![String::from("Elias Projahn <johrpan@gmail.com>")])
+        .build();
+
+    dialog.connect_response(|dialog, _| dialog.close());
+    dialog.show();
+}

src/dialogs/mod.rs

@@ -1,3 +1,6 @@
+pub mod about;
+pub use about::*;
+
 pub mod ensemble_editor;
 pub use ensemble_editor::*;
 

src/meson.build

@@ -3,6 +3,7 @@ localedir = join_paths(prefix, get_option('localedir'))
 
 global_conf = configuration_data()
 global_conf.set_quoted('LOCALEDIR', localedir)
+global_conf.set_quoted('VERSION', meson.project_version())
 config_rs = configure_file(
   input: 'config.rs.in',
   output: 'config.rs',
@@ -37,6 +38,7 @@ sources = files(
   'database/models.rs',
   'database/schema.rs',
   'database/tables.rs',
+  'dialogs/about.rs',
   'dialogs/ensemble_editor.rs',
   'dialogs/ensemble_selector.rs',
   'dialogs/instrument_editor.rs',

src/window.rs

@@ -110,6 +110,14 @@ impl Window {
             })
         );
 
+        action!(
+            result.window,
+            "about",
+            clone!(@strong result => move |_, _| {
+                show_about_dialog(&result.window);
+            })
+        );
+
         action!(
             result.window,
             "add-person",