Reengineer font and resource loading 🏞

1 files changed, 40 insertions, 0 deletions

diff --git a/src/env/image.rs b/src/env/image.rs
new file mode 100644
index 00000000..4bdb5483
--- /dev/null
+++ b/src/env/image.rs
@@ -0,0 +1,40 @@
+use std::fmt::{self, Debug, Formatter};
+use std::io::Cursor;
+
+use image::io::Reader as ImageReader;
+use image::{DynamicImage, GenericImageView, ImageFormat};
+
+use super::Buffer;
+
+/// A loaded image resource.
+pub struct ImageResource {
+    /// The original format the image was encoded in.
+    pub format: ImageFormat,
+    /// The decoded image.
+    pub buf: DynamicImage,
+}
+
+impl ImageResource {
+    /// Parse an image resource from raw data in a supported format.
+    ///
+    /// The image format is determined automatically.
+    pub fn parse(data: Buffer) -> Option<Self> {
+        let cursor = Cursor::new(data.as_ref());
+        let reader = ImageReader::new(cursor).with_guessed_format().ok()?;
+        let format = reader.format()?;
+        let buf = reader.decode().ok()?;
+        Some(Self { format, buf })
+    }
+}
+
+impl Debug for ImageResource {
+    fn fmt(&self, f: &mut Formatter) -> fmt::Result {
+        let (width, height) = self.buf.dimensions();
+        f.debug_struct("ImageResource")
+            .field("format", &self.format)
+            .field("color", &self.buf.color())
+            .field("width", &width)
+            .field("height", &height)
+            .finish()
+    }
+}