e7185d2cd3
Added margins bottom margins on EpisodesView and ShowWidget. Added some comment's to the code. Silenced needless_pass_by_value clippy warning. Updated TODO.md.
124 lines
3.7 KiB
Rust
124 lines
3.7 KiB
Rust
use send_cell::SendCell;
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use glib;
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use gdk_pixbuf::Pixbuf;
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use hammond_data::feed;
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use hammond_data::{PodcastCoverQuery, Source};
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use hammond_downloader::downloader;
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use std::thread;
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use std::cell::RefCell;
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use std::sync::mpsc::{channel, Receiver};
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use std::sync::Mutex;
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use std::rc::Rc;
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use std::collections::HashMap;
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use content::Content;
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type Foo = RefCell<Option<(Rc<Content>, Receiver<bool>)>>;
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// Create a thread local storage that will store the arguments to be transfered.
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thread_local!(static GLOBAL: Foo = RefCell::new(None));
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/// Update the rss feed(s) originating from `Source`.
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/// If `source` is None, Fetches all the `Source` entries in the database and updates them.
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/// `delay` represents the desired time in seconds for the thread to sleep before executing.
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/// When It's done,it queues up a `podcast_view` refresh.
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pub fn refresh_feed(content: Rc<Content>, source: Option<Vec<Source>>) {
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// Create a async channel.
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let (sender, receiver) = channel();
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// Pass the desired arguments into the Local Thread Storage.
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GLOBAL.with(clone!(content => move |global| {
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*global.borrow_mut() = Some((content.clone(), receiver));
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}));
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thread::spawn(move || {
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let feeds = {
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if let Some(vec) = source {
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Ok(feed::fetch(vec))
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} else {
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feed::fetch_all()
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}
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};
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if let Ok(x) = feeds {
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feed::index(x);
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sender.send(true).expect("Couldn't send data to channel");;
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glib::idle_add(refresh_podcasts_view);
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};
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});
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}
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fn refresh_podcasts_view() -> glib::Continue {
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GLOBAL.with(|global| {
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if let Some((ref content, ref reciever)) = *global.borrow() {
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if reciever.try_recv().is_ok() {
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content.update();
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}
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}
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});
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glib::Continue(false)
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}
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lazy_static! {
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static ref CACHED_PIXBUFS: Mutex<HashMap<(i32, u32), Mutex<SendCell<Pixbuf>>>> = {
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Mutex::new(HashMap::new())
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};
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}
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// Since gdk_pixbuf::Pixbuf is refference counted and every episode,
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// use the cover of the Podcast Feed/Show, We can only create a Pixbuf
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// cover per show and pass around the Rc pointer.
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//
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// GObjects do not implement Send trait, so SendCell is a way around that.
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// Also lazy_static requires Sync trait, so that's what the mutexes are.
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// TODO: maybe use something that would just scale to requested size?
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pub fn get_pixbuf_from_path(pd: &PodcastCoverQuery, size: u32) -> Option<Pixbuf> {
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let mut hashmap = CACHED_PIXBUFS.lock().unwrap();
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{
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let res = hashmap.get(&(pd.id(), size));
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if let Some(px) = res {
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let m = px.lock().unwrap();
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return Some(m.clone().into_inner());
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}
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}
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let img_path = downloader::cache_image(pd)?;
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let px = Pixbuf::new_from_file_at_scale(&img_path, size as i32, size as i32, true).ok();
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if let Some(px) = px {
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hashmap.insert((pd.id(), size), Mutex::new(SendCell::new(px.clone())));
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return Some(px);
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}
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None
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}
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#[cfg(test)]
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mod tests {
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use hammond_data::Source;
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use hammond_data::feed::index;
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use hammond_data::dbqueries;
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use diesel::associations::Identifiable;
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use super::*;
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#[test]
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fn test_get_pixbuf_from_path() {
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let url = "http://www.newrustacean.com/feed.xml";
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// Create and index a source
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let source = Source::from_url(url).unwrap();
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// Copy it's id
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let sid = source.id().clone();
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// Convert Source it into a Feed and index it
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let feed = source.into_feed().unwrap();
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index(vec![feed]);
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// Get the Podcast
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let pd = dbqueries::get_podcast_from_source_id(sid).unwrap();
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let pxbuf = get_pixbuf_from_path(&pd.into(), 256);
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assert!(pxbuf.is_some());
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}
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}
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