feat: load cursor from data

Log:

wayland-cursor/src/lib.rs

@@ -177,6 +177,14 @@ impl CursorTheme {
  }
  }
 
+ /// Allow load cursor from data, this allow program to set a fallback image, it finally cannot
+ /// find any usable cursor
+ pub fn load_cursor_from_data(&mut self, name: &str, size: u32, data: &[u8]) -> Option<Cursor> {
+ let conn = Connection::from_backend(self.backend.upgrade()?);
+ let images = xparser::parse_xcursor(data)?;
+ Some(Cursor::new(&conn, name, self, &images, size))
+ }
+
  /// This function loads a cursor, parses it and pushes the images onto the shm pool.
  ///
  /// Keep in mind that if the cursor is already loaded, the function will make a duplicate.