## Summary
This PR refactors the mask editor from a vanilla JavaScript
implementation to Vue 3 + Composition API, aligning it with the ComfyUI
frontend's modern architecture. This is a structural refactor without UI
changes - all visual appearances and user interactions remain identical.
Net change: +1,700 lines (mostly tests)
## Changes
- Converted from class-based managers to Vue 3 Composition API
- Migrated state management to Pinia stores (maskEditorStore,
maskEditorDataStore)
- Split monolithic managers into focused composables:
- useBrushDrawing - Brush rendering and drawing logic
- useCanvasManager - Canvas lifecycle and operations
- useCanvasTools - Tool-specific canvas operations
- usePanAndZoom - Pan and zoom functionality
- useToolManager - Tool selection and coordination
- useKeyboard - Keyboard shortcuts
- useMaskEditorLoader/Saver - Data loading and saving
- useCoordinateTransform - Coordinate system transformations
- Replaced imperative DOM manipulation with Vue components
- Added comprehensive test coverage
## What This PR Does NOT Change
Preserved Original Styling:
- Original CSS retained in packages/design-system/src/css/style.css
- Some generic controls (DropdownControl, SliderControl, ToggleControl)
preserved as-is
- Future migration to Tailwind and PrimeVue components is planned but
out of scope for this PR
Preserved Core Functionality:
- Drawing algorithms and brush rendering logic remain unchanged
- Pan/zoom calculations preserved
- Canvas operations (composite modes, image processing) unchanged
- Tool behaviors (brush, color select, paint bucket) identical
- No changes to mask generation or export logic
DO NOT Review:
- CSS styling choices (preserved from original)
- Drawing algorithm implementations (unchanged)
- Canvas rendering logic (ported as-is)
- UI/UX changes (none exist)
- Component library choices (future work)
┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-6629-fully-refactor-mask-editor-into-vue-based-2a46d73d36508114ab8bd2984b4b54e4)
by [Unito](https://www.unito.io)
## Summary
Split mask editor structure into smaller files
## Changes
This PR is a prerequisite step for [the issue - refactoring the mask
editor using
Vue](https://github.com/Comfy-Org/ComfyUI_frontend/issues/5956). It
splits the current monolithic maskeditor.ts (about 5700 lines) into
separate files; otherwise, the original single file would be very
difficult to analyze or maintain.
This PR itself does not introduce any Vue, nor should it have any
functional changes or modifications. It's purely a code-level split,
with all related files placed in the maskeditor folder.
The original maskeditor.ts has been renamed to maskeditor.ts.backup for
future reference.
## Review Focus
Since this PR is only for splitting purposes, all logic remains
consistent with the original. Therefore, for any reviewer: any code
logic improvements should happen in the subsequent Vue-based
refactoring, not in this PR.
Following this PR, I will perform a Vue-based refactoring of the mask
editor to align with the frontend's overall Vue architecture and provide
better cloud-related support.
┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-6308-refactor-Split-mask-editor-into-smaller-files-2986d73d36508131937dd43e465a47bd)
by [Unito](https://www.unito.io)
