dstOut constant
The destination that does not overlap the source replaces the source.
Implementation
static const BlendMode dstOut = PorterDuff(
  PorterDuff.zero,
  PorterDuff.oneMinusSrc,
);
The destination that does not overlap the source replaces the source.
static const BlendMode dstOut = PorterDuff(
  PorterDuff.zero,
  PorterDuff.oneMinusSrc,
);