src/main.rs

@@ -1,11 +1,19 @@
-use std::{env, ffi::OsStr, fs, io::Write, path::Path};
+use std::{
+    env,
+    ffi::OsStr,
+    fs,
+    io::{Read, Write},
+    path::Path,
+};
 
 use iced::{
     Alignment, Color, Element, Length, Renderer, Subscription, Task, Theme, color, event,
     keyboard::{self, Key, key},
     theme, widget, window,
 };
-use image::{DynamicImage, EncodableLayout, ImageDecoder, ImageReader, RgbaImage, imageops};
+use image::{
+    DynamicImage, EncodableLayout, ImageDecoder, ImageReader, RgbImage, RgbaImage, imageops,
+};
 use jpegxl_rs::image::ToDynamic;
 use rfd::FileDialog;
 
@@ -81,24 +89,20 @@ impl State {
                 }
 
                 Key::Character("r") => {
-                    match self.image.as_ref() {
-                        None => self.error = Some("no image to rotate".into()),
-                        Some(image) => {
-                            self.error = None;
-                            self.image = Some(imageops::rotate90(image));
-                            return self.allocate_image();
-                        }
+                    let Some(image) = self.image.as_ref() else {
+                        eprintln!("no image to rotate");
+                        return Task::none();
                     };
+                    self.image = Some(imageops::rotate90(image));
+                    return self.allocate_image();
                 }
                 Key::Character("i") => {
-                    match self.image.as_mut() {
-                        None => self.error = Some("no image to invert".into()),
-                        Some(image) => {
-                            self.error = None;
-                            imageops::invert(image);
-                            return self.allocate_image();
-                        }
+                    let Some(image) = self.image.as_mut() else {
+                        eprintln!("no image to invert");
+                        return Task::none();
                     };
+                    imageops::invert(image);
+                    return self.allocate_image();
                 }
 
                 Key::Character("s") => {
@@ -145,14 +149,12 @@ impl State {
                             path.display()
                         ));
                     }
-                    Err(e) => {
-                        return Some(format!("failed to decode jxl '{}': {e}", path.display()));
-                    }
+                    Err(e) => return Some(format!("faled to decode '{}' {e}", path.display())),
                 }
             }
 
             _ => {
-                let reader = match ImageReader::open(path) {
+                let reader = match ImageReader::open(&path) {
                     Ok(r) => r,
                     Err(e) => {
                         return Some(format!(
@@ -272,7 +274,7 @@ impl State {
         widget::image::allocate(widget::image::Handle::from_rgba(
             image.width(),
             image.height(),
-            unsafe { std::mem::transmute::<&[u8], &'static [u8]>(image.as_bytes()) },
+            unsafe { std::mem::transmute::<_, &'static [u8]>(image.as_bytes()) },
         ))
         .map(Message::ImageDisplayReady)
     }