feat: saving image

dialog is missing!!

Cargo.lock

@@ -812,6 +812,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1e0e367e4e7da84520dedcac1901e4da967309406d1e51017ae1abfb97adbd38"
 dependencies = [
  "bitflags 2.13.0",
+ "block2 0.6.2",
+ "libc",
  "objc2 0.6.4",
 ]
 
@@ -1647,6 +1649,7 @@ dependencies = [
  "dirs",
  "iced",
  "image",
+ "rfd",
 ]
 
 [[package]]
@@ -2719,6 +2722,12 @@ dependencies = [
  "windows-sys 0.61.2",
 ]
 
+[[package]]
+name = "pollster"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2f3a9f18d041e6d0e102a0a46750538147e5e8992d3b4873aaafee2520b00ce3"
+
 [[package]]
 name = "portable-atomic"
 version = "1.13.1"
@@ -3019,6 +3028,33 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "19b30a45b0cd0bcca8037f3d0dc3421eaf95327a17cad11964fb8179b4fc4832"
 
+[[package]]
+name = "rfd"
+version = "0.17.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "20dafead71c16a34e1ff357ddefc8afc11e7d51d6d2b9fbd07eaa48e3e540220"
+dependencies = [
+ "block2 0.6.2",
+ "dispatch2",
+ "js-sys",
+ "libc",
+ "log",
+ "objc2 0.6.4",
+ "objc2-app-kit 0.3.2",
+ "objc2-core-foundation",
+ "objc2-foundation 0.3.2",
+ "percent-encoding",
+ "pollster",
+ "raw-window-handle",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+ "wayland-backend",
+ "wayland-client",
+ "wayland-protocols",
+ "web-sys",
+ "windows-sys 0.61.2",
+]
+
 [[package]]
 name = "rgb"
 version = "0.8.53"

Cargo.toml

@@ -7,3 +7,4 @@ edition = "2024"
 iced = { version = "0.14.0", features = [ "image" ] }
 dirs = "6.0.0"
 image = "0.25.10"
+rfd = "0.17.2"

src/main.rs

@@ -1,11 +1,14 @@
-use std::env;
+use std::{env, ffi::OsStr, fs};
 
 use iced::{
     Color, Element, Renderer, Subscription, Task, Theme, color, event,
     keyboard::{self, Key, key},
     theme, widget, window,
 };
-use image::{EncodableLayout, ImageReader, Pixel, Rgba, RgbaImage, imageops};
+use image::{
+    EncodableLayout, ImageReader, Pixel, Rgba, RgbaImage, codecs::webp::WebPEncoder, imageops,
+};
+use rfd::FileDialog;
 
 #[derive(Clone, Debug)]
 enum Message {
@@ -85,6 +88,35 @@ impl State {
                     return self.allocate_image();
                 }
 
+                Key::Character("s") => {
+                    let Some(path) = FileDialog::new().save_file() else {
+                        eprintln!("no path to save provided");
+                        return Task::none();
+                    };
+
+                    let Ok(file) = fs::File::create(&path)
+                        .inspect_err(|e| eprintln!("failed to create file: {e}"))
+                    else {
+                        return Task::none();
+                    };
+
+                    let maybe_encoder =
+                        match path.extension().map(OsStr::to_string_lossy).as_deref() {
+                            Some("webp") => Some(WebPEncoder::new_lossless(file)),
+
+                            None | Some(_) => None,
+                        };
+
+                    let result = if let Some(encoder) = maybe_encoder {
+                        self.image.write_with_encoder(encoder)
+                    } else {
+                        self.image.save(path)
+                    };
+
+                    #[allow(unused_must_use)]
+                    result.inspect_err(|e| eprintln!("failed to save image: {e}"));
+                }
+
                 // ignore unused keys
                 _ => {}
             },