add constants

crates/servicepoint_binding_uniffi/src/constants.rs

@@ -0,0 +1,21 @@
+#[derive(Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Hash, Debug, uniffi::Record)]
+pub struct Constants {
+    pub tile_size: u64,
+    pub tile_width: u64,
+    pub tile_height: u64,
+    pub pixel_width: u64,
+    pub pixel_height: u64,
+    pub pixel_count: u64,
+}
+
+#[uniffi::export]
+fn get_constants() -> Constants {
+Constants {
+        tile_size: servicepoint::TILE_SIZE as u64,
+        tile_width: servicepoint::TILE_WIDTH as u64,
+        tile_height: servicepoint::TILE_HEIGHT as u64,
+        pixel_width: servicepoint::PIXEL_WIDTH as u64,
+        pixel_height: servicepoint::PIXEL_HEIGHT as u64,
+        pixel_count: servicepoint::PIXEL_COUNT as u64,
+    }
+}

crates/servicepoint_binding_uniffi/src/lib.rs

@@ -9,3 +9,4 @@ mod compression_code;
 mod connection;
 mod cp437_grid;
 mod errors;
+mod constants;