From 70504a9f71594469e0418e3a47efcc3c3928d3b3 Mon Sep 17 00:00:00 2001
From: Jakob Meier <comcloudway@ccw.icu>
Date: Wed, 14 Aug 2024 08:36:38 +0200
Subject: [PATCH] Cache feed item thumbnail

This should significantly increase the refresh speed,
especially when reordering plalist items
---
 melon/widgets/feeditem.py | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/melon/widgets/feeditem.py b/melon/widgets/feeditem.py
index 09457a8..7678028 100644
--- a/melon/widgets/feeditem.py
+++ b/melon/widgets/feeditem.py
@@ -14,6 +14,9 @@ from unidecode import unidecode
 from gettext import gettext as _
 from melon.utils import pass_me, many
 
+# dictionary used to cache preview textures
+# [url]: texture
+preview_cache = {}
 
 class AdaptiveFeedItem(Adw.ActionRow):
     """
@@ -109,9 +112,14 @@ class AdaptiveFeedItem(Adw.ActionRow):
             queue.add(self.update_avatar, thumb_url)
 
     def update_avatar(self, url):
+        if url in preview_cache:
+            texture = preview_cache[url]
+            GLib.idle_add(self.complete_avatar, texture)
+            return
         pixbuf = pixbuf_from_url(url)
         if not pixbuf is None:
             texture = Gdk.Texture.new_for_pixbuf(pixbuf)
+            preview_cache[url] = texture
             GLib.idle_add(self.complete_avatar, texture)
 
     def complete_avatar(self, texture):
@@ -207,9 +215,14 @@ class AdaptivePlaylistFeedItem(Adw.ActionRow):
             queue.add(self.update_avatar, playlist.inner.thumbnail)
 
     def update_avatar(self, url):
+        if url in preview_cache:
+            texture = preview_cache[url]
+            GLib.idle_add(self.complete_avatar, texture)
+            return
         pixbuf = pixbuf_from_url(url)
         if not pixbuf is None:
             texture = Gdk.Texture.new_for_pixbuf(pixbuf)
+            preview_cache[url] = texture
             GLib.idle_add(self.complete_avatar, texture)
 
     def complete_avatar(self, texture):
-- 
2.38.5