feat: simple rotation

src/main.rs

@@ -5,7 +5,7 @@ use iced::{
     keyboard::{self, Key, key},
     theme, widget, window,
 };
-use image::{EncodableLayout, ImageReader, RgbaImage};
+use image::{EncodableLayout, ImageReader, RgbaImage, imageops};
 
 #[derive(Clone, Debug)]
 enum Message {
@@ -57,6 +57,15 @@ impl State {
 
                 Key::Character("q") => return window::latest().and_then(window::close),
 
+                Key::Character("r") => {
+                    self.image = imageops::rotate90(&self.image);
+                    self.image_handle = widget::image::Handle::from_rgba(
+                        self.image.width(),
+                        self.image.height(),
+                        unsafe { std::mem::transmute::<_, &'static [u8]>(self.image.as_bytes()) },
+                    )
+                }
+
                 // ignore unused keys
                 _ => {}
             },