Initial commit

src/images.rs

@@ -0,0 +1,39 @@
+use std::{cell::UnsafeCell, mem::MaybeUninit};
+
+use embedded_graphics::pixelcolor::Rgb565;
+use tinybmp::Bmp;
+
+thread_local! {
+    pub static HUMIDITY_ICON: UnsafeCell<MaybeUninit<Bmp<'static, Rgb565>>> = const { UnsafeCell::new(MaybeUninit::zeroed()) };
+    pub static TEMPERATURE_ICON: UnsafeCell<MaybeUninit<Bmp<'static, Rgb565>>> = const { UnsafeCell::new(MaybeUninit::zeroed()) };
+    pub static VOC_ICON: UnsafeCell<MaybeUninit<Bmp<'static, Rgb565>>> = const { UnsafeCell::new(MaybeUninit::zeroed()) };
+    pub static CO2_ICON: UnsafeCell<MaybeUninit<Bmp<'static, Rgb565>>> = const { UnsafeCell::new(MaybeUninit::zeroed()) };
+}
+
+macro_rules! load_image {
+    ($stat:expr, $path:expr) => {
+        $stat
+            .with(|x| *x.get() = MaybeUninit::new(Bmp::from_slice(include_bytes!($path)).unwrap()));
+    };
+}
+
+#[macro_export]
+macro_rules! get_image {
+    ($image:expr) => {
+        unsafe {
+            &*std::mem::transmute::<*mut MaybeUninit<Bmp<Rgb565>>, *mut Bmp<Rgb565>>(
+                $image.with(|g| g.get()),
+            )
+        }
+    };
+}
+
+pub fn prepare_images()
+{
+    unsafe {
+        load_image!(HUMIDITY_ICON, "../assets/humidity-icon.bmp");
+        load_image!(TEMPERATURE_ICON, "../assets/temperature-icon.bmp");
+        load_image!(VOC_ICON, "../assets/voc-icon.bmp");
+        load_image!(CO2_ICON, "../assets/co2-icon.bmp");
+    }
+}