Optimized similar images loading

CHANGELOG.md

@@ -6,10 +6,11 @@ All notable changes to this project will be documented in this file.
 ### Changed
 
  - Now reading EXIF files for all image formats, not only for JPEGs
+ - Optimized loading of similar images
 
 ### Added
 
- - 
+ - Added filters for the item list
 
 ### Fixed
 

src/main_window.rs

@@ -551,9 +551,10 @@ fn synchronize_images_model(
         model_index += 1;
     };
 
-    // TODO: Also first item should be loaded in background, but in a prioritized queue
-    add_item(&selected_item_index, true, window.clone());
+    // Clear pending commands in the image cache
+    image_cache.purge();
 
+    add_item(&selected_item_index, true, window.clone());
     for image_index in similars {
         add_item(image_index, false, window.clone());
     }

src/misc/image_cache.rs

@@ -94,6 +94,12 @@ impl ImageCache {
         )
     }
 
+    /// Purge all running commands
+    pub fn purge(&self) {
+        self.primary_queue.lock().unwrap().clear();
+        self.secondary_queue.lock().unwrap().clear();
+    }
+
     /// Sets the maximum width and height of the images to load
     pub fn restrict_size(&mut self, max_width: u32, max_height: u32) {
         if max_width > self.max_width || max_height > self.max_height {
@@ -130,7 +136,7 @@ impl ImageCache {
             }
             Purpose::SimilarImage => {
                 let mut queue = self.secondary_queue.lock().unwrap();
-                queue.push_front(command);
+                queue.push_back(command);
                 self.secondary_sender.send(()).ok();
             }
             Purpose::Prefetch => {