safeParseOffset function

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

Safely parses a Map representation of a point to an Offset object.

This function attempts to convert the provided map to an Offset object. If the map is null, missing required keys (dx and dy), or contains invalid values, a fallback offset is returned instead.

• Parameters:

  • map: A Map that is expected to contain dx and dy keys (or the short forms x and y), where their values can be converted to double.
  • fallback: An Offset value to return if parsing fails or if map is null. Defaults to Offset.zero if not provided.

• Returns: An Offset object constructed from the map if parsing succeeds, or the fallback offset if it fails.

• Example:

safeParseOffset({'dx': 200, 'dy': 100}); // returns Offset(200.0, 100.0)
safeParseOffset(null);                   // returns Offset.zero (fallback)
safeParseOffset({'dx': 'abc', 'dy': 50}, fallback: Offset(10, 10));
                                         // returns Offset(10.0, 50.0)

Implementation

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

  return Offset(
    safeParseDouble(map['dx'] ?? map['x'], fallback: fallback.dx),
    safeParseDouble(map['dy'] ?? map['y'], fallback: fallback.dy),
  );
}