useMask

useMask() provides headless state and actions for mask controls in a property panel.

Usage

ts

import { useMask } from '@open-pencil/vue'

const { active, maskType, setMaskType } = useMask()

active is true when exactly one selected node is being used as a mask.
maskType is the selected node's ALPHA, VECTOR, or LUMINANCE mask type.
setMaskType(type) updates the active mask with undo support.

Use the selection.toggleMask editor command to turn masking on or off so toolbar, context-menu, and keyboard behavior stays consistent.