Allow for parallel development instance

This adds a configuration option in meson, if set it changes the
application ID allowing for stable and development version to be
run at the same time.

podcasts-gtk/src/app.rs

@@ -28,7 +28,8 @@ use std::sync::Arc;
 
 use i18n::i18n;
 
-pub(crate) const APP_ID: &str = "org.gnome.Podcasts";
+pub(crate) const APP_ID: &str = env!("APP_ID");
+pub(crate) const VERSION: &str = env!("VERSION");
 
 /// Creates an action named `name` in the action map `T with the handler `F`
 fn action<T, F>(thing: &T, name: &str, action: F)
@@ -82,12 +83,15 @@ pub(crate) struct App {
 
 impl App {
     pub(crate) fn new(application: &gtk::Application) -> Rc<Self> {
-        let settings = gio::Settings::new(APP_ID);
+        let settings = gio::Settings::new("org.gnome.Podcasts");
 
         let (sender, receiver) = unbounded();
 
         let window = gtk::ApplicationWindow::new(application);
         window.set_title(&i18n("Podcasts"));
+        if APP_ID.ends_with("Devel") {
+            window.get_style_context().map(|c| c.add_class("devel"));
+        }
 
         let weak_s = settings.downgrade();
         let weak_app = application.downgrade();
@@ -380,6 +384,7 @@ impl App {
 
         let application = gtk::Application::new(APP_ID, gio::ApplicationFlags::empty())
             .expect("Application initialization failed...");
+        application.set_resource_base_path("/org/gnome/Podcasts");
 
         let weak_app = application.downgrade();
         application.connect_startup(move |_| {

podcasts-gtk/src/widgets/aboutdialog.rs

@@ -1,4 +1,4 @@
-use app::APP_ID;
+use app::{APP_ID, VERSION};
 use gtk;
 use gtk::prelude::*;
 
@@ -27,9 +27,7 @@ pub(crate) fn about_dialog(window: &gtk::ApplicationWindow) {
     dialog.set_copyright("© 2017, 2018 Jordan Petridis");
     dialog.set_license_type(gtk::License::Gpl30);
     dialog.set_modal(true);
-    // TODO: make it show it fetches the commit hash from which it was built
-    // and the version number is kept in sync automatically
-    dialog.set_version("0.4.4");
+    dialog.set_version(VERSION);
     dialog.set_program_name(&i18n("Podcasts"));
     dialog.set_website("https://wiki.gnome.org/Apps/Podcasts");
     dialog.set_website_label(i18n("Learn more about GNOME Podcasts").as_str());

podcasts-gtk/src/widgets/empty.rs

@@ -1,4 +1,5 @@
-use gtk;
+use app::APP_ID;
+use gtk::{self, prelude::*};
 use std::ops::Deref;
 
 #[derive(Clone, Debug)]
@@ -15,6 +16,8 @@ impl Default for EmptyView {
     fn default() -> Self {
         let builder = gtk::Builder::new_from_resource("/org/gnome/Podcasts/gtk/empty_view.ui");
         let view: gtk::Box = builder.get_object("empty_view").unwrap();
+        let image: gtk::Image = builder.get_object("image").unwrap();
+        image.set_from_icon_name(format!("{}-symbolic", APP_ID).as_str(), 256);
         EmptyView(view)
     }
 }