Stenzek 80855090d5
Qt: Rewrite cover loading/generation
This was always wrong, QPixmaps shouldn't be manipulated outside of
the UI thread, and it used to crash in debug builds.

Also uses a placeholder image instead of a black image while covers
are loading/generating.
2025-01-03 20:16:38 +10:00
..
2025-01-03 20:16:37 +10:00
2025-01-03 18:19:12 +10:00