Expose the underlying reality of signed fields in the Rust API

Author: Shnatsel

src/rust_api.rs

@@ -372,13 +372,13 @@ impl Picture {
     }
 
     /// Width of the frame.
-    pub fn width(&self) -> u32 {
-        self.inner.p.w.try_into().unwrap()
+    pub fn width(&self) -> i32 {
+        self.inner.p.w
     }
 
     /// Height of the frame.
-    pub fn height(&self) -> u32 {
-        self.inner.p.h.try_into().unwrap()
+    pub fn height(&self) -> i32 {
+        self.inner.p.h
     }
 
     /// Pixel layout of the frame.