WIP gallery app

user-apps/gallery/src/main.rs

@@ -0,0 +1,56 @@
+#![no_std]
+#![no_main]
+
+extern crate alloc;
+use abi::{
+    KeyCode, KeyState, Rng,
+    display::{Display, SCREEN_HEIGHT, SCREEN_WIDTH},
+    file_len, get_key, list_dir, lock_display, print, read_file, sleep,
+};
+use alloc::{format, vec::Vec};
+use core::panic::PanicInfo;
+use embedded_graphics::{Drawable, image::Image, prelude::*};
+use tinybmp::Bmp;
+
+#[panic_handler]
+fn panic(info: &PanicInfo) -> ! {
+    print(&format!(
+        "user panic: {} @ {:?}",
+        info.message(),
+        info.location(),
+    ));
+    loop {}
+}
+
+#[unsafe(no_mangle)]
+pub extern "Rust" fn _start() {
+    main()
+}
+
+pub fn main() {
+    print("Starting Gallery app");
+    let mut display = Display;
+
+    let file = "/images/ferriseyes_tiny.bmp";
+
+    let mut bmp_buf = [0_u8; 3_000];
+    let read = read_file(file, 0, &mut bmp_buf);
+    let bmp = Bmp::from_slice(&bmp_buf[..read]).unwrap();
+
+    // ensure all draws show up at once
+    lock_display(true);
+    Image::new(&bmp, Point::new(10, 20))
+        .draw(&mut display)
+        .unwrap();
+    lock_display(false);
+
+    loop {
+        let event = get_key();
+        if event.state != KeyState::Idle {
+            match event.key {
+                KeyCode::Esc => return,
+                _ => (),
+            }
+        };
+    }
+}