reorganize more

src/device/editor/piano.rs

@@ -156,7 +156,7 @@ impl PianoHorizontal {
                     }
                 }
             }
-            Ok(xywh)
+            Ok(Some(xywh))
         })
     }
 
@@ -190,7 +190,7 @@ impl PianoHorizontal {
                     break
                 }
             }
-            Ok(xywh)
+            Ok(Some(xywh))
         })
     }
 
@@ -217,7 +217,7 @@ impl PianoHorizontal {
                     to.blit(&note_pitch_to_name(note), x, screen_y, off_style)
                 };
             }
-            Ok(xywh)
+            Ok(Some(xywh))
         })))
     }
 
@@ -233,7 +233,7 @@ impl PianoHorizontal {
                     to.blit(&"|", screen_x, y, style);
                 }
             }
-            Ok(xywh)
+            Ok(Some(xywh))
         })))
     }
 }