safeParseSize function

Size safeParseSize(Map<String, dynamic>? map, { Size fallback = Size.zero, })

Safely parses a Map representation of a size to a Size object.

This function attempts to convert the provided map to a Size object. If the map is null, missing required keys (width and height), or contains invalid values, a fallback size is returned instead.

• Parameters:

  • map: A Map that is expected to contain width and height keys, where their values can be converted to double.
  • fallback: A Size value to return if parsing fails or if map is null. Defaults to Size.zero if not provided.

• Returns: A Size object constructed from the map if parsing succeeds, or the fallback size if it fails.

• Example:

safeParseSize({'width': 200, 'height': 100}); // returns Size(200.0, 100.0)
safeParseSize(null);                          // returns Size.zero (fallback)
safeParseSize({'width': 'abc', 'height': 50}, fallback: Size(10, 10));
                                              // returns Size(10.0, 10.0) (fallback)

Implementation

Size safeParseSize(Map<String, dynamic>? map, {Size fallback = Size.zero}) {
  if (map == null) return fallback;

  return Size(
    safeParseDouble(map['width'], fallback: fallback.width),
    safeParseDouble(map['height'], fallback: fallback.height),
  );
}