audrey/src/ui/window.rs

mod imp {
    use crate::{Playbin, PlaybinSong};
    use adw::prelude::*;
    use adw::subclass::prelude::*;
    use glib::subclass::InitializingObject;
    use gtk::{gdk, glib};
    use std::cell::{Cell, RefCell};
    use std::rc::Rc;
    use tracing::{event, Level};

    #[derive(gtk::CompositeTemplate, glib::Properties)]
    #[template(resource = "/eu/callcc/audrey/window.ui")]
    #[properties(wrapper_type = super::Window)]
    pub struct Window {
        #[template_child]
        pub(super) playbar: TemplateChild<crate::ui::Playbar>,

        #[template_child]
        pub(super) play_queue: TemplateChild<crate::ui::PlayQueue>,

        #[property(get, set, default = false)]
        can_click_shuffle_all: Cell<bool>,

        #[property(get, set, nullable)]
        playing_cover_art: RefCell<Option<gdk::Paintable>>,

        #[property(get, set, nullable)]
        song: RefCell<Option<PlaybinSong>>,

        pub(super) setup: crate::ui::Setup,

        pub(super) playbin: Rc<Playbin>,
        pub(super) api: RefCell<Option<Rc<crate::subsonic::Client>>>,

        pub(super) sender: async_broadcast::Sender<crate::Event>,
        pub(super) inactive_receiver: async_broadcast::InactiveReceiver<crate::Event>,
    }

    impl Default for Window {
        fn default() -> Self {
            let (sender, receiver) = async_broadcast::broadcast(100); // TODO: constantize

            Self {
                playbar: Default::default(),
                play_queue: Default::default(),
                can_click_shuffle_all: Cell::new(false),
                playing_cover_art: Default::default(),
                song: Default::default(),
                setup: Default::default(),
                playbin: Rc::new(Playbin::new(sender.clone())),
                api: Default::default(),
                sender,
                inactive_receiver: receiver.deactivate(),
            }
        }
    }

    #[glib::object_subclass]
    impl ObjectSubclass for Window {
        const NAME: &'static str = "AudreyUiWindow";
        type Type = super::Window;
        type ParentType = adw::ApplicationWindow;

        fn class_init(klass: &mut Self::Class) {
            klass.bind_template();
            klass.bind_template_callbacks();
        }

        fn instance_init(obj: &InitializingObject<Self>) {
            obj.init_template();
        }
    }

    #[glib::derived_properties]
    impl ObjectImpl for Window {
        fn constructed(&self) {
            self.parent_constructed();

            crate::event::spawn_object_listener(
                self.inactive_receiver.activate_cloned(),
                self.obj().as_ref(),
                |window, event| {
                    use crate::Event;
                    match dbg!(event) {
                        Event::PlaybinVolumeChanged => {
                            window
                                .imp()
                                .playbar
                                .set_volume(window.playbin().volume() as i32);
                        }

                        Event::PlaybinMutedChanged => {
                            window.imp().playbar.set_mute(window.playbin().muted());
                        }

                        Event::PlaybinEntryInserted(index) => {
                            window
                                .imp()
                                .play_queue
                                .model()
                                .unwrap()
                                .insert(index as u32, &window.playbin().entries()[index]);
                        }

                        _ => {}
                    }
                },
            );

            let playbin = Rc::downgrade(&self.playbin);
            glib::spawn_future_local(glib::clone!(async move {
                loop {
                    match playbin.upgrade() {
                        None => break,
                        Some(playbin) => {
                            let listener = playbin.tick();
                            drop(playbin);
                            listener.await;
                        }
                    }
                }
            }));

            self.play_queue.set_playbin(&self.playbin);

            // set up mpris
            let window = self.obj().clone();
            glib::spawn_future_local(async move {
                let conn = zbus::connection::Builder::session()
                    .expect("could not connect to the session bus")
                    .internal_executor(false)
                    .build()
                    .await
                    .expect("could not build connection to the session bus");

                // run this in glib's main loop
                glib::spawn_future_local(glib::clone!(
                    #[strong]
                    conn,
                    async move {
                        loop {
                            conn.executor().tick().await;
                        }
                    }
                ));

                crate::Mpris::setup(conn.object_server(), &window)
                    .await
                    .expect("could not serve mpris");
                crate::mpris::Player::setup(conn.object_server(), &window.imp().playbin)
                    .await
                    .expect("could not serve mpris player");

                drop(window); // don't keep this alive

                // always set up handlers before requesting service name
                conn.request_name("org.mpris.MediaPlayer2.audrey")
                    .await
                    .expect("could not register name in session bus");
            });
        }
    }

    impl WidgetImpl for Window {}

    impl WindowImpl for Window {}

    impl ApplicationWindowImpl for Window {}

    impl AdwApplicationWindowImpl for Window {}

    #[gtk::template_callbacks]
    impl Window {
        #[template_callback]
        fn show_playbar_cover_art(&self, stack_child: Option<&str>) -> bool {
            stack_child != Some("play-queue")
        }

        #[template_callback]
        async fn shuffle_all(&self) {
            self.obj().set_can_click_shuffle_all(false);
            self.playbin.stop();
            let api = self.api.borrow();
            let api = api.as_ref().unwrap();
            for song in api.get_random_songs(10).await.unwrap().into_iter() {
                self.playbin.push_entry(PlaybinSong::from_child(api, &song));
            }
            self.obj().set_can_click_shuffle_all(true);
        }

        #[template_callback]
        fn show_setup_dialog(&self) {
            self.setup.present(Some(self.obj().as_ref()));
        }

        pub(super) fn now_playing(&self, _song: &PlaybinSong) {
            /*
            this.song = song;
            // api.scrobble.begin (this.song.id); TODO

            if (this.cancel_loading_art != null) {
                this.cancel_loading_art.cancel ();
            }
            this.cancel_loading_art = new GLib.Cancellable ();

            this.playing_cover_art = null; // TODO: preload next art somehow
            this.cover_art_loading = true;

            string song_id = this.song.id;
            this.api.cover_art.begin (song_id, -1, Priority.DEFAULT, this.cancel_loading_art, (obj, res) => {
                try {
                    this.playing_cover_art = Gdk.Texture.for_pixbuf (this.api.cover_art.end (res));
                    this.cover_art_loading = false;
                } catch (Error e) {
                    if (!(e is IOError.CANCELLED)) {
                        warning ("could not load cover for %s: %s", song_id, e.message);
                        this.cover_art_loading = false;
                    }
                }
            });
                */
            todo!()
        }
    }

    impl Drop for Window {
        fn drop(&mut self) {
            event!(Level::DEBUG, "dropping AudreyUiWindow");
        }
    }
}

use adw::prelude::*;
use adw::subclass::prelude::*;
use gtk::{gio, glib};
use std::rc::Rc;

glib::wrapper! {
    pub struct Window(ObjectSubclass<imp::Window>)
        @extends adw::ApplicationWindow, gtk::ApplicationWindow, gtk::Window, gtk::Widget,
        @implements gio::ActionGroup, gio::ActionMap, gtk::Accessible, gtk::Buildable, gtk::ConstraintTarget, gtk::Native, gtk::Root, gtk::ShortcutManager;
}

impl Window {
    pub fn new(app: &impl IsA<gtk::Application>) -> Self {
        let window: Self = glib::Object::builder().property("application", app).build();

        // manual bidirectional sync
        window
            .imp()
            .playbar
            .set_volume(window.imp().playbin.volume() as i32);
        window.imp().playbar.connect_notify_local(
            Some("volume"),
            glib::clone!(
                #[weak(rename_to = playbin)]
                window.imp().playbin,
                move |playbar, _| playbin.set_volume(playbar.volume() as i64)
            ),
        );

        window.imp().playbar.set_mute(window.imp().playbin.muted());
        window.imp().playbar.connect_notify_local(
            Some("mute"),
            glib::clone!(
                #[weak(rename_to = playbin)]
                window.imp().playbin,
                move |playbar, _| playbin.set_muted(playbar.mute())
            ),
        );

        window.imp().playbin.file_started().connect_object(
            &*window.imp().playbar,
            |playbin, playbar, ()| {
                let entry = &playbin.entries()[playbin.current_entry().unwrap()];
                playbar.set_duration(entry.duration() as f64);
                true
            },
        );

        // update position every 100 ms
        glib::source::timeout_add_local(std::time::Duration::from_millis(100), {
            let playbar = window.imp().playbar.downgrade();
            let playbin = Rc::downgrade(&window.imp().playbin);
            move || {
                let playbar = match playbar.upgrade() {
                    None => return glib::ControlFlow::Break,
                    Some(playbar) => playbar,
                };
                let playbin = match playbin.upgrade() {
                    None => return glib::ControlFlow::Break,
                    Some(playbin) => playbin,
                };
                playbar.set_position(playbin.position().unwrap_or(0.0));
                glib::ControlFlow::Continue
            }
        });

        window
            .imp()
            .setup
            .connected()
            .connect_object(&window, |_setup, window, api| {
                window.imp().api.replace(Some(api));
                window.imp().playbin.stop();
                window.set_can_click_shuffle_all(true);
                true
            });
        window.imp().setup.load();

        window
            .imp()
            .playbin
            .file_started()
            .connect_object(&window, |playbin, window, ()| {
                window
                    .imp()
                    .now_playing(&playbin.entries()[playbin.current_entry().unwrap()]);
                true
            });

        window
    }

    pub fn playbin(&self) -> &crate::Playbin {
        &self.imp().playbin
    }

    pub fn receiver(&self) -> async_broadcast::Receiver<crate::Event> {
        self.imp().inactive_receiver.activate_cloned()
    }
}