* Switch to @open-pencil/yoga-layout with CSS Grid support
Use our fork (open-pencil/yoga, grid branch) which cherry-picks the
upstream CSS Grid PRs (#1893–#1898) onto current main. The JS bindings
are ported from the old embind approach to the new wasm_bridge.c API.
npm:@open-pencil/yoga-layout alias keeps all imports as 'yoga-layout'.
Also handle FinalizationRegistry change (upstream #1908) — node.free()
no longer exists, nodes are garbage collected automatically.
* Add CSS Grid layout mode
Scene graph:
- LayoutMode gains 'GRID' option alongside HORIZONTAL/VERTICAL
- GridTrack type (sizing: FIXED/FR/AUTO, value) for track definitions
- GridPosition type (column, row, columnSpan, rowSpan) for children
- New node props: gridTemplateColumns/Rows, gridColumnGap, gridRowGap,
gridPosition
Layout engine:
- buildGridTree() sets Display.Grid and maps GridTrack[] to Yoga's
setGridTemplateColumns/Rows API with FR/Points/Auto track types
- Grid children use gridPosition for column/row placement with span
- Flex layout path unchanged
Store:
- setLayoutMode('GRID') auto-creates NxM track grid based on child
count (sqrt heuristic), defaults to 1fr tracks
UI (LayoutSection.vue):
- Grid button (grid-2x2 icon) added to flow direction row
- Columns/Rows track editors: ScrubInput for value + AppSelect for
sizing mode (Fill fr / Fixed px / Auto), add/remove buttons
- Separate column gap and row gap ScrubInputs
- Wrap button hidden when grid is active
- Flex alignment grid hidden when grid is active
Kiwi serialization skips GRID mode for now (no .fig codec support).
* Add grid layout integration tests
12 new test scenarios covering:
- Basic 2x2 grid, fixed columns, mixed fr/fixed, unequal fr weights
- Column gap, row gap, both gaps combined
- Padding offsets
- Explicit gridPosition placement, column span, row span
- Absolute children skipped
- Hidden children collapsed
- Nested grid inside flex parent (computeAllLayouts)
Also fix: grid frames as children of flex parents now correctly use
Display.Grid via configureChildAsGrid() instead of falling through
to configureChildAsAutoLayout() which set FlexDirection.
* Deduplicate grid yoga configuration
Extract configureAsGrid() and createGridChildNode() shared by
buildGridTree (root-level grid) and configureChildAsGrid (grid
nested inside flex parent).
* Add grid layout to changelog
* Add grid support to JSX and Tailwind CSS export
OpenPencil format: grid → columns/rows/columnGap/rowGap props,
child colStart/rowStart/colSpan/rowSpan.
Tailwind format: grid grid-cols-N grid-rows-N gap-x-* gap-y-*,
mixed tracks use arbitrary values (grid-cols-[200px_1fr_auto]),
child col-start-*/row-start-*/col-span-*/row-span-*.
Both formats: padding emitted for grid frames (shared with flex),
flex-only props (justify/items/wrap/gap) scoped to isFlex.
* Remove duplicate gridTrackToTw, use shared formatTrack
Also drop unused GridTrackSizing import from LayoutSection.vue.
* Fix grid icon: use layout-grid instead of grid-2x2
unplugin-icons can't resolve icon names with digits after hyphens
(grid-2x2 → grid2x2 which doesn't exist).
* Polish layout UI and fix auto-layout behavior
- Replace text labels with compact icons: ↔/↕ for gap, ☐ for uniform padding, T/R/B/L for per-side padding
- Direction-aware gap icon: ↕ for vertical, ↔ for horizontal
- Pin +/− padding toggle button right of gap input
- Fix alignment grid axes for vertical layout (transpose primary/counter)
- Fix grid switch: set FIXED sizing, compute frame size from children
- Remove hardcoded white fill from Shift+A wrap
- Auto-detect horizontal vs vertical from selection bounds
* Add flex-to-grid switch integration test
Verify HUG frame expands and children are placed in 2x2 grid
when switching from vertical flex to grid layout.
* Update changelog for grid layout
Bridge now uses Hono for the HTTP server and ws for WebSocket —
works on both Bun and Node.js. Uses @hono/node-server as fallback
when Bun runtime is not available.
- / shows empty canvas
- /demo loads demo content (for app.openpencil.dev landing link)
- Title template: '{page} — OpenPencil' via useHead
- 'Try it online' links in README and docs point to /demo
Upgrade reka-ui 2.8.2 → 2.9.0 and replace the hand-rolled HSV color
area, hue slider, alpha slider, and hex input with reka-ui's new
ColorArea, ColorSlider, and ColorField primitives.
- ColorAreaRoot + ColorAreaArea handle the 2D saturation/brightness
picker with proper gradient backgrounds and keyboard navigation
- ColorSliderRoot + ColorSliderTrack for hue and alpha channels with
automatic gradient rendering
- ColorFieldRoot + ColorFieldInput for hex color text input with
arrow key increment/decrement support
- Bridge between our Color type (0–1 range) and reka-ui's Color
(0–255 RGB) via hex string serialization
Removes ~110 lines of custom HSV↔RGB conversion math, pointer capture
handling, and CSS gradient computation.
- Add destroyed flag to SkiaRenderer.destroy() to prevent double-free
- Check destroyed flag in renderNow() to skip rendering after unmount
(loadFonts promise could resolve after component unmounts)
13 tests using InMemoryTransport from @modelcontextprotocol/sdk:
- Tool registration (all 76 tools listed with descriptions)
- new_document, open_file, save_file lifecycle
- Tool execution through MCP protocol (create, fill, delete, query)
- Error paths: no document loaded, nonexistent node, invalid file path
- Full workflow: new → create → nest → query → delete
Fix @open-pencil/core dep in MCP package: workspace:* for local dev
(pnpm publish resolves this to the actual version at publish time).
- Cloudflare Worker + Durable Object server (packages/collab/)
- One DO per room with WebSocket Hibernation for near-zero idle cost
- Yjs sync protocol for document state (CRDT merge)
- Yjs awareness protocol for cursors, selection, presence
- Persists doc state to DO storage
- CORS headers for cross-origin WebSocket upgrade
- Client composable (src/composables/use-collab.ts)
- Y.Doc ↔ SceneGraph bidirectional binding
- Awareness: broadcasts cursor position, selection, name, color
- Auto-join from /share/:roomId URL
- Suppresses echo loops between Yjs and graph updates
- CollabPanel component (src/components/CollabPanel.vue)
- Share button generates room link, copies to clipboard
- Join flow: paste link or room ID
- Avatar stack with colored initials and tooltips
- Name input persisted to localStorage
- Remote cursor rendering in CanvasKit
- Colored arrow cursor + name label pill per remote peer
- Remote selection outlines in peer's color
- Only shows cursors on the same page
- SPA redirect for /share/* routes (Cloudflare Pages _redirects)
- sceneNodeToJsx() in @open-pencil/core: converts SceneNode subtree to JSX
- CodePanel.vue with Prism.js highlighting, line numbers, copy button
- Third tab in properties panel: Design | Code | AI
- 14 new tests covering shapes, text, layout, effects, multi-selection
Use markRaw to prevent Vue from deep-proxying the Chat class
instance, which broke its internal Vue refs. Add dedent for
multiline prompts.
Tests use mock transport by default. Set TEST_REAL_LLM=1 and
OPENROUTER_API_KEY to run against real OpenRouter.
Move engine (scene-graph, renderer, layout, codec, kiwi) into
packages/core/ as a Bun workspace package. The app's src/engine/
files become thin re-export shims so all existing imports still work.
- Bun workspace with packages/core
- Zero DOM dependencies in core
- Headless-friendly CanvasKit init (locateFile option)
- Constants split: engine constants in core, UI constants in app
- All 76 unit tests pass, lint + typecheck clean, vite build works
- Replace deflate with Zstd compression via zstd-wasm for .fig export
(Figma expects Zstd, not zlib deflate)
- Extract IS_TAURI constant from repeated window check
- Fix Tauri fs permissions: use allow-write-file / allow-read-file
with glob scope instead of bare allow-write / allow-read
