forked from 1b-agent/opencadstudio-upstream
Hakan SevenandClaude Fable 5
c938d56ac6
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 <[email protected]>
82 lines
3.2 KiB
Rust
82 lines
3.2 KiB
Rust
//! Recent-files list backing the Start page's Recent Documents panel. The list
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//! itself lives in the consolidated app config (`settings.json`, the "recent"
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//! section); this module just mutates the in-memory list and persists via
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//! `save_config`.
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use super::OpenCADStudio;
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use std::path::{Path, PathBuf};
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/// Bounds and default for how many recent files are kept.
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pub(super) const RECENT_MIN: usize = 5;
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pub(super) const RECENT_MAX: usize = 100;
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pub(super) const RECENT_DEFAULT: usize = 20;
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impl OpenCADStudio {
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/// Record a freshly opened file at the top of the recents list. Returns
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/// the background task that decodes its thumbnail.
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pub(super) fn push_recent(&mut self, path: PathBuf) -> iced::Task<crate::app::Message> {
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self.recent_files.retain(|r| r != &path);
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self.recent_files.insert(0, path);
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self.recent_files.truncate(self.recent_limit);
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self.save_config();
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self.refresh_recent_thumbs()
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}
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/// Decode any not-yet-cached DWG preview thumbnails for the current
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/// recents on a background thread, delivering them via
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/// [`Message::RecentThumbsLoaded`]. The synchronous version of this ran on
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/// the boot path and stalled the first frame for as long as it took to
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/// parse every recent DWG's preview — the Start page appeared seconds
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/// late. Cached per path (a `None` result is cached too); safe to call
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/// repeatedly.
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pub(super) fn refresh_recent_thumbs(&mut self) -> iced::Task<crate::app::Message> {
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let missing: Vec<std::path::PathBuf> = self
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.recent_files
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.iter()
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.filter(|p| !self.recent_thumbs.contains_key(*p))
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.cloned()
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.collect();
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if missing.is_empty() {
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return iced::Task::none();
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}
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// The web build has no spawnable threads and no filesystem previews —
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// recents there simply show without thumbnails.
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#[cfg(target_arch = "wasm32")]
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{
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return iced::Task::none();
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}
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#[cfg(not(target_arch = "wasm32"))]
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{
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let (tx, rx) = iced::futures::channel::oneshot::channel();
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std::thread::spawn(move || {
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let thumbs: Vec<_> = missing
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.into_iter()
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.map(|p| {
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let h = crate::io::thumbnail::read_handle(&p);
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(p, h)
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})
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.collect();
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let _ = tx.send(thumbs);
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});
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iced::Task::perform(
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async move { rx.await.unwrap_or_default() },
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crate::app::Message::RecentThumbsLoaded,
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)
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}
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}
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/// Drop a path from the recents list (manual removal from the Start page).
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pub(super) fn remove_recent(&mut self, path: &Path) {
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self.recent_files.retain(|r| r.as_path() != path);
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self.save_config();
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}
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/// Set how many recent files are kept, trim the current list to fit, and
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/// persist both.
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pub(super) fn set_recent_limit(&mut self, limit: usize) {
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self.recent_limit = limit.clamp(RECENT_MIN, RECENT_MAX);
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self.recent_files.truncate(self.recent_limit);
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self.save_config();
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}
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}
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