added underdeveloped but working image support (no freeing or samplers)

src/core/image.rs

@@ -0,0 +1,63 @@
+use image::DynamicImage;
+
+use crate::{Color, TextureHandle, Widget, WidgetFnRet, render::RectPrimitive};
+
+pub struct Image {
+    handle: Option<TextureHandle>,
+}
+
+impl<Ctx> Widget<Ctx> for Image {
+    fn draw(&self, painter: &mut crate::Painter<Ctx>) {
+        if let Some(handle) = &self.handle {
+            painter.draw_texture(handle);
+        } else {
+            painter.write(RectPrimitive {
+                color: Color::MAGENTA,
+                inner_radius: 0.0,
+                radius: 0.0,
+                thickness: 0.0,
+            });
+        }
+    }
+}
+
+pub fn image<Ctx>(image: impl LoadableImage) -> WidgetFnRet!(Image, Ctx) {
+    let image = match image.get_image() {
+        Ok(image) => Some(image),
+        Err(e) => {
+            println!("Failed to load image: {e}");
+            None
+        }
+    };
+    move |ui| Image {
+        handle: image.map(|image| ui.add_texture(image)),
+    }
+}
+
+pub trait LoadableImage {
+    fn get_image(self) -> Result<DynamicImage, String>;
+}
+
+impl LoadableImage for &str {
+    fn get_image(self) -> Result<DynamicImage, String> {
+        image::open(self).map_err(|e| format!("{e:?}"))
+    }
+}
+
+impl LoadableImage for String {
+    fn get_image(self) -> Result<DynamicImage, String> {
+        image::open(self).map_err(|e| format!("{e:?}"))
+    }
+}
+
+impl<const LEN: usize> LoadableImage for &[u8; LEN] {
+    fn get_image(self) -> Result<DynamicImage, String> {
+        image::load_from_memory(self).map_err(|e| format!("{e:?}"))
+    }
+}
+
+impl LoadableImage for DynamicImage {
+    fn get_image(self) -> Result<DynamicImage, String> {
+        Ok(self)
+    }
+}