Fix a type checker error

This commit is contained in:
Isaiah Odhner 2023-04-24 20:52:49 -04:00
parent 1523e960bb
commit e62064a307

View File

@ -184,7 +184,7 @@ class Window(Container):
def on_mouse_move(self, event: events.MouseMove) -> None:
"""Called when the user moves the mouse."""
if self.mouse_at_drag_start:
if self.mouse_at_drag_start and self.offset_at_drag_start:
self.styles.offset = (
self.offset_at_drag_start.x + event.screen_x - self.mouse_at_drag_start.x,
self.offset_at_drag_start.y + event.screen_y - self.mouse_at_drag_start.y,