[PATCH] Added offsets to GenericImageView to compensate for the now-d…

…eprecated bounds call.

Fixes #2118

src/image.rs

@@ -1026,6 +1026,11 @@ pub trait GenericImageView {
         h
     }
 
+    /// The offsets of this image view relative to the underlying image buffer.
+    fn offsets(&self) -> (u32, u32) {
+        (0, 0)
+    }
+
     /// The bounding rectangle of this image.
     #[deprecated = "This method has inconsistent behavior between implementations (#1829). Use `dimensions` instead"]
     fn bounds(&self) -> (u32, u32, u32, u32);
@@ -1420,6 +1425,10 @@ where
         (self.xstride, self.ystride)
     }
 
+    fn offsets(&self) -> (u32, u32) {
+        (self.xoffset, self.yoffset)
+    }
+
     fn bounds(&self) -> (u32, u32, u32, u32) {
         (self.xoffset, self.yoffset, self.xstride, self.ystride)
     }