add width and height macro

src/bitmap.rs

@@ -1,8 +1,9 @@
 use servicepoint::{DataRef, Grid};
 use std::sync::{Arc};
-use crate::macros::wrap_uniffi_object;
+use crate::macros::{wrap_width_height, wrap_uniffi_object};
 
 wrap_uniffi_object!(Bitmap);
+wrap_width_height!(Bitmap);
 
 #[uniffi::export]
 impl Bitmap {
@@ -42,14 +43,7 @@ impl Bitmap {
     pub fn fill(&self, value: bool) {
         self.actual.write().unwrap().fill(value)
     }
-    pub fn width(&self) -> u64 {
-        self.actual.read().unwrap().width() as u64
-    }
-
-    pub fn height(&self) -> u64 {
-        self.actual.read().unwrap().height() as u64
-    }
-
+    
     pub fn equals(&self, other: &Bitmap) -> bool {
         let a = self.actual.read().unwrap();
         let b = other.actual.read().unwrap();