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fix(start): decode recent-file thumbnails off the boot path

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load_config synchronously parsed every recent DWG's embedded preview
on the main thread before the first frame, so the Start page appeared
seconds late on DWG-heavy recents. refresh_recent_thumbs now decodes
the missing previews on a background thread and delivers them via
RecentThumbsLoaded; the page opens immediately and thumbnails pop in
as they resolve. The web build (no threads, no filesystem previews)
skips the fetch.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
Hakan Seven 2026-07-21 10:06:55 +03:00
commit c938d56ac6
2 changed files with 48 additions and 14 deletions
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7
src/app/update/file.rs
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@ -296,7 +296,8 @@ impl OpenCADStudio {
.clamp(crate::app::recent::RECENT_MIN, crate::app::recent::RECENT_MAX);
self.recent_files.truncate(self.recent_limit);
self.recent_limit_input = self.recent_limit.to_string();
self.refresh_recent_thumbs();
// Thumbnails are decoded by a background task queued at boot
// (`refresh_recent_thumbs`) — never here on the boot path.
self.statusbar_config = cfg.statusbar;
self.ribbon.set_collapse_mode(cfg.ribbon.collapse);
self.plot_dialog = cfg.plot;
@ -396,7 +397,7 @@ pub(super) fn on_open_file(&mut self) -> Task<Message> {
caches.corrupt_dropped
));
}
self.push_recent(path.clone());
let thumbs_task = self.push_recent(path.clone());
let current_is_empty = {
let t = &self.tabs[self.active_tab];
@ -587,7 +588,7 @@ pub(super) fn on_open_file(&mut self) -> Task<Message> {
self.tabs[i].dirty = false;
self.tabs[i].history = crate::app::document::HistoryState::default();
self.refresh_selected_grips();
self.drain_pending_open()
Task::batch([thumbs_task, self.drain_pending_open()])
}
pub(super) fn on_wblock_save_result_some(&mut self, block_name: String, path: std::path::PathBuf) -> Task<Message> {