thumbnails in play queue

resources/play_queue_song.blp

@@ -24,6 +24,8 @@ template $AudreyUiPlayQueueSong: Box {
       focusable: false;
       halign: end;
       justify: right;
+      margin-top: 1;
+      margin-bottom: 1;
 
       styles [
         "dim-label",
@@ -39,7 +41,7 @@ template $AudreyUiPlayQueueSong: Box {
     margin-top: 1;
     margin-bottom: 1;
     pixel-size: 50;
-    // paintable: bind template.song as <$AudreyModelSong>.thumbnail;
+    paintable: bind template.song as <$AudreyModelSong>.thumbnail;
   }
 
   Box title_box {

src/model/song.rs

@@ -1,7 +1,7 @@
 mod imp {
     use adw::prelude::*;
-    use gtk::glib;
     use gtk::subclass::prelude::*;
+    use gtk::{gdk, glib};
     use std::cell::{Cell, RefCell};
 
     static NEXT_COUNTER: std::sync::atomic::AtomicU64 = std::sync::atomic::AtomicU64::new(0);
@@ -31,6 +31,10 @@ mod imp {
         cover_art_url: RefCell<String>,
         #[property(get, set)]
         stream_url: RefCell<String>,
+
+        #[property(get, set)]
+        thumbnail: RefCell<Option<gdk::Paintable>>,
+        pub(super) thumbnail_loading: RefCell<Option<glib::JoinHandle<()>>>,
     }
 
     #[glib::object_subclass]
@@ -48,19 +52,31 @@ mod imp {
                 .set_counter(NEXT_COUNTER.fetch_add(1, std::sync::atomic::Ordering::Relaxed));
         }
     }
+
+    impl Drop for Song {
+        fn drop(&mut self) {
+            self.thumbnail_loading.take().map(|handle| handle.abort());
+        }
+    }
 }
 
 use crate::subsonic;
+use adw::{prelude::*, subclass::prelude::*};
 use glib::Object;
-use gtk::glib;
+use gtk::{gdk, glib};
+use std::rc::Rc;
 
 glib::wrapper! {
     pub struct Song(ObjectSubclass<imp::Song>);
 }
 
 impl Song {
-    pub fn from_child(api: &subsonic::Client, song: &subsonic::schema::Child) -> Self {
-        Object::builder()
+    pub fn from_child(
+        api: &Rc<subsonic::Client>,
+        song: &subsonic::schema::Child,
+        load_thumbnail: bool,
+    ) -> Self {
+        let song: Song = Object::builder()
             .property("id", &song.id)
             .property("title", &song.title)
             .property("artist", &song.artist)
@@ -68,8 +84,31 @@ impl Song {
             .property("genre", &song.genre)
             .property("duration", song.duration as i64)
             //.property("track", song.track)
-            .property("cover-art-url", api.cover_art_url(&song.id).as_str())
+            .property("cover-art-url", api.cover_art_url(&song.id, 0).as_str())
             .property("stream-url", api.stream_url(&song.id).as_str())
-            .build()
+            .build();
+
+        if load_thumbnail {
+            let api = Rc::clone(&api);
+            let id = song.id();
+            let song_weak = song.downgrade();
+            song.imp()
+                .thumbnail_loading
+                .replace(Some(glib::spawn_future_local(async move {
+                    let bytes = api
+                        .cover_art(&id, 50) // TODO: constify thumbnail size, maybe take dpi into account etc
+                        .await
+                        .unwrap();
+                    let song = match song_weak.upgrade() {
+                        None => return,
+                        Some(song) => song,
+                    };
+                    song.set_thumbnail(
+                        gdk::Texture::from_bytes(&glib::Bytes::from_owned(bytes)).unwrap(),
+                    );
+                })));
+        }
+
+        song
     }
 }

src/subsonic.rs

@@ -219,12 +219,19 @@ impl Client {
         .map(|response| response.random_songs.song)
     }
 
-    pub fn cover_art_url(&self, id: &str) -> url::Url {
-        self.url(&["rest", "getCoverArt"], &[("id", id)])
+    pub fn cover_art_url(&self, id: &str, size: u32) -> url::Url {
+        if size == 0 {
+            self.url(&["rest", "getCoverArt"], &[("id", id)])
+        } else {
+            self.url(
+                &["rest", "getCoverArt"],
+                &[("id", id), ("size", &size.to_string())],
+            )
+        }
     }
 
-    pub async fn cover_art(&self, id: &str) -> Result<Bytes, Error> {
-        self.send_bytes(self.client.get(self.cover_art_url(id)))
+    pub async fn cover_art(&self, id: &str, size: u32) -> Result<Bytes, Error> {
+        self.send_bytes(self.client.get(self.cover_art_url(id, size)))
             .await
     }
 

src/ui/window.rs

@@ -270,7 +270,7 @@ mod imp {
                 Rc::clone(api.as_ref().unwrap())
             };
             for song in api.get_random_songs(10).await.unwrap().into_iter() {
-                let song = Song::from_child(&api, &song);
+                let song = Song::from_child(&api, &song, true);
                 self.mpv
                     .command(["loadfile", &song.stream_url(), "append-play"])
                     .unwrap();
@@ -472,12 +472,11 @@ mod imp {
 
             let window = self.obj().clone();
             let song_id = window.song().unwrap().id();
-            self
-                .loading_cover_handle
+            self.loading_cover_handle
                 .replace(Some(glib::spawn_future_local(async move {
                     let api = window.imp().api.borrow().as_ref().unwrap().clone();
                     let bytes = api
-                        .cover_art(&song_id)
+                        .cover_art(&song_id, 0) // 0: full size
                         .await
                         .expect("could not load cover art for song {song_id}");