Gimp.AddMaskType

Modes of initialising a layer mask.

AddMaskType.WHITE

White (full opacity)

AddMaskType.BLACK

Black (full transparency)

AddMaskType.ALPHA

Layer's alpha channel

AddMaskType.ALPHA_TRANSFER

Transfer layer's alpha channel

AddMaskType.SELECTION

Selection

AddMaskType.COPY

Grayscale copy of layer

AddMaskType.CHANNEL

Channel