xor constant
The non-overlapping regions of the source and destination are combined.
Implementation
static const BlendMode xor = PorterDuff(
  PorterDuff.oneMinusDst,
  PorterDuff.oneMinusSrc,
);
The non-overlapping regions of the source and destination are combined.
static const BlendMode xor = PorterDuff(
  PorterDuff.oneMinusDst,
  PorterDuff.oneMinusSrc,
);