Blending topic

The BlendMode interface generates a function that blends two pixel values together:

// Combine non-overlapping regions of colors.
final xor = BlendMode.xor.getBlend(abgr8888, abgr8888);
print(xor(0x00000000, 0xFFFFFFFF)); // 0xFFFFFFFF

Default blend modes are provided using the PorterDuff constructor:

const BlendMode srcIn = PorterDuff(
  PorterDuff.dst,
  PorterDuff.zero,
);

Blend Mode	Description
clear	Sets pixels to zero.
src	Copies the source pixel.
dst	Copies the destination pixel.
srcIn	The source that overlaps the destination replaces the destination.
dstIn	The destination that overlaps the source replaces the source.
srcOut	The source that does not overlap the destination replaces the destination.
dstOut	The destination that does not overlap the source replaces the source.
srcAtop	The source that overlaps the destination is blended with the destination.
dstAtop	The destination that overlaps the source is blended with the source.
xor	The source and destination are combined where they do not overlap.
plus	The source and destination are added together.

Classes

BlendMode

Algorithms to use when painting on the canvas.

BlendMode

Algorithms to use when painting on the canvas.

Pixels<T>

A 2-dimensional buffer of pixel data in memory.

Pixels<T>

A 2-dimensional buffer of pixel data in memory.

PorterDuff

A BlendMode that uses Porter-Duff coefficients to blend colors.

PorterDuff

A BlendMode that uses Porter-Duff coefficients to blend colors.