render MediaCache method

Signed-off-by: kernelkind <kernelkind@gmail.com>

crates/notedeck_columns/src/ui/images.rs

@@ -0,0 +1,42 @@
+use notedeck::{MediaCache, TexturedImage};
+
+use crate::images::ImageType;
+
+use super::ProfilePic;
+
+pub fn render_media_cache(
+    ui: &mut egui::Ui,
+    cache: &mut MediaCache,
+    url: &str,
+    img_type: ImageType,
+    show_waiting: impl FnOnce(&mut egui::Ui),
+    show_error: impl FnOnce(&mut egui::Ui, String),
+    show_success: impl FnOnce(&mut egui::Ui, &str, &mut TexturedImage),
+) -> egui::Response {
+    let m_cached_promise = cache.map().get(url);
+
+    if m_cached_promise.is_none() {
+        let res = crate::images::fetch_img(cache, ui.ctx(), url, img_type);
+        cache.map_mut().insert(url.to_owned(), res);
+    }
+
+    egui::Frame::none()
+        .show(ui, |ui| {
+            match cache.map_mut().get_mut(url).and_then(|p| p.ready_mut()) {
+                None => show_waiting(ui),
+                Some(Err(err)) => {
+                    let err = err.to_string();
+                    let no_pfp = crate::images::fetch_img(
+                        cache,
+                        ui.ctx(),
+                        ProfilePic::no_pfp_url(),
+                        ImageType::Profile(128),
+                    );
+                    cache.map_mut().insert(url.to_owned(), no_pfp);
+                    show_error(ui, err)
+                }
+                Some(Ok(renderable_media)) => show_success(ui, url, renderable_media),
+            }
+        })
+        .response
+}

crates/notedeck_columns/src/ui/mod.rs

@@ -5,6 +5,7 @@ pub mod anim;
 pub mod column;
 pub mod configure_deck;
 pub mod edit_deck;
+pub mod images;
 pub mod mention;
 pub mod note;
 pub mod preview;