feat: enable lints and use the image provider module

Cargo.toml

@@ -3,6 +3,46 @@ name = "photo-frame"
 version = "0.1.0"
 edition = "2021"
 
+[lints.rust]
+unsafe_code = "forbid"
+
+[lints.clippy]
+all = "deny"
+nursery = "deny"
+pedantic = "deny"
+complexity = "deny"
+perf = "deny"
+style = "deny"
+suspicious = "deny"
+unwrap_in_result = { level = "deny", priority = 1}
+unwrap_used = { level = "deny", priority = 1}
+expect_used = { level = "deny", priority = 1}
+verbose_file_reads = { level = "deny", priority = 1}
+unneeded_field_pattern = { level = "deny", priority = 1}
+tests_outside_test_module = { level = "deny", priority = 1}
+shadow_same = { level = "deny", priority = 1}
+same_name_method = { level = "deny", priority = 1}
+rest_pat_in_fully_bound_structs = { level = "deny", priority = 1}
+redundant_type_annotations = { level = "deny", priority = 1}
+panic = { level = "deny", priority = 1}
+# Allow some annoying lints
+module_name_repetitions = {level = "allow", priority = 1}
+missing_errors_doc = {level = "allow", priority = 1}
+needless_pass_by_value = {level = "allow", priority = 1}
+or_fun_call = {level = "allow", priority = 1}
+implicit_hasher = {level = "allow", priority = 1}
+significant_drop_tightening = {level = "allow", priority = 1}
+cast_possible_truncation = {level = "allow", priority = 1}
+cast_sign_loss = {level = "allow", priority = 1}
+cast_precision_loss = {level = "allow", priority = 1}
+future_not_send = {level = "allow", priority = 1}
+
+[profile.release]
+strip = true
+lto = "thin"
+
 [dependencies]
+anyhow = "1.0.93"
 image = "0.25.4"
 macroquad = { version = "0.4.13" }
+walkdir = "2.5.0"

src/dimensions.rs

@@ -5,11 +5,11 @@ pub struct Dimensions {
 }
 
 impl Dimensions {
-    pub fn new(width: u32, height: u32) -> Self {
+    pub const fn new(width: u32, height: u32) -> Self {
         Self { width, height }
     }
 
-    pub fn aspect_ratio(&self) -> f32 {
+    pub const fn aspect_ratio(self) -> f32 {
         self.width as f32 / self.height as f32
     }
 }

src/image_provider.rs

@@ -0,0 +1,73 @@
+use crate::dimensions::{calculate_resize_dimensions, Dimensions};
+use image::ImageReader;
+use macroquad::texture::Texture2D;
+use std::path::PathBuf;
+use walkdir::WalkDir;
+
+pub struct ImageProvider {
+    path: PathBuf,
+    directory_it: Box<dyn Iterator<Item = Result<walkdir::DirEntry, walkdir::Error>>>,
+    texture: Option<Texture2D>,
+    screen_dimension: Dimensions,
+}
+
+impl ImageProvider {
+    pub fn new(screen_dimension: Dimensions, path: PathBuf) -> Self {
+        Self {
+            directory_it: Box::new(WalkDir::new(&path).max_open(8).into_iter()),
+            texture: None,
+            screen_dimension,
+            path,
+        }
+    }
+
+    pub fn load_next_image(&mut self) -> anyhow::Result<()> {
+        let path = self.get_next_image_path()?;
+        let image = ImageReader::open(path)?.decode()?;
+
+        let image_dim = Dimensions::new(image.width(), image.height());
+        let new_dim = calculate_resize_dimensions(self.screen_dimension, image_dim);
+
+        let image = image.resize(
+            new_dim.width,
+            new_dim.height,
+            image::imageops::FilterType::Lanczos3,
+        );
+
+        self.texture = Some(Texture2D::from_rgba8(
+            image.width().try_into()?,
+            image.height().try_into()?,
+            &image.into_rgba8(),
+        ));
+
+        Ok(())
+    }
+
+    pub fn get_current_texture(&self) -> anyhow::Result<&Texture2D> {
+        self.texture
+            .as_ref()
+            .ok_or_else(|| anyhow::anyhow!("No image loaded"))
+    }
+
+    fn get_next_image_path(&mut self) -> anyhow::Result<PathBuf> {
+        loop {
+            match self.directory_it.next() {
+                Some(Ok(entry)) => {
+                    if entry.file_type().is_file()
+                        && entry
+                            .path()
+                            .extension()
+                            .is_some_and(|ext| ext == "jpg" || ext == "jpeg" || ext == "png")
+                    {
+                        return Ok(entry.path().to_path_buf());
+                    }
+                }
+                Some(Err(e)) => return Err(e.into()),
+                None => {
+                    // Reset the iterator when we reach the end
+                    self.directory_it = Box::new(WalkDir::new(&self.path).max_open(8).into_iter());
+                }
+            }
+        }
+    }
+}

src/main.rs

@@ -1,8 +1,13 @@
-use dimensions::{calculate_resize_dimensions, Dimensions};
-use image::ImageReader;
+use dimensions::Dimensions;
+use image_provider::ImageProvider;
 use macroquad::prelude::*;
+use std::{
+    thread,
+    time::{Duration, Instant},
+};
 
 mod dimensions;
+mod image_provider;
 
 fn window_conf() -> Conf {
     Conf {
@@ -14,11 +19,11 @@ fn window_conf() -> Conf {
     }
 }
 
-fn display_image(texture: &Texture2D) {
+fn display_image_centered(texture: &Texture2D) {
     let screen_width = screen_width();
     let screen_height = screen_height();
     draw_texture(
-        &texture,
+        texture,
         clamp(screen_width - texture.width(), 0.0f32, screen_width) / 2.0f32,
         clamp(screen_height - texture.height(), 0.0f32, screen_height) / 2.0f32,
         WHITE,
@@ -26,36 +31,35 @@ fn display_image(texture: &Texture2D) {
 }
 
 #[macroquad::main(window_conf)]
-async fn main() {
+async fn main() -> anyhow::Result<()> {
     show_mouse(false);
-    let image = ImageReader::open("examples/test.jpg")
-        .unwrap()
-        .decode()
-        .unwrap();
-
     let screen_dim = Dimensions::new(screen_width() as u32, screen_height() as u32);
-    let image_dim = Dimensions::new(image.width(), image.height());
-
-    let new_dim = calculate_resize_dimensions(screen_dim, image_dim);
-    let image = image.resize(
-        new_dim.width,
-        new_dim.height,
-        image::imageops::FilterType::Lanczos3,
-    );
-
-    let texture = Texture2D::from_rgba8(
-        image.width().try_into().unwrap(),
-        image.height().try_into().unwrap(),
-        &image.into_rgba8().to_vec(),
-    );
+    let mut provider = ImageProvider::new(screen_dim, "/mnt/c/Users/beaus/Downloads".into());
+    provider.load_next_image()?;
+    let mut time = Instant::now();
 
     loop {
-        clear_background(BLACK);
         if is_quit_requested() || is_key_released(KeyCode::Escape) {
             break;
         }
 
-        display_image(&texture);
-        next_frame().await
+        display_frame(&provider)?;
+
+        if time.elapsed().as_secs() > 5 {
+            provider.load_next_image()?;
+            time = Instant::now();
+        }
+        thread::sleep(Duration::from_millis(250));
+        next_frame().await;
     }
+
+    Ok(())
+}
+
+fn display_frame(provider: &ImageProvider) -> anyhow::Result<()> {
+    let image = provider.get_current_texture()?;
+    clear_background(BLACK);
+    display_image_centered(image);
+
+    Ok(())
 }