Files
hyperframes/packages/studio
Miguel Ángel 7a0cb085bb feat(studio): draggable layer reorder with z-index persistence (#1216)
* feat(studio): add drag-to-reorder in layers panel with z-index persistence

Layers panel now sorts siblings by computed z-index (descending) to
reflect visual stacking order. Users can drag layer rows to reorder
them within a sibling group — on drop, sequential z-index values are
assigned and persisted via the existing inline-style patch pipeline
with a single preview reload.

- sortLayersByZIndex: recursive sibling-group sort by computed z-index
- useLayerDrag: pointer-capture drag gesture with 4px threshold,
  insertion indicator line, and depth-constrained sibling reorder
- handleDomZIndexReorderCommit: batch z-index commit with coalesced
  undo entry and single skipRefresh=false on the final patch

* fix(studio): harden layer drag-to-reorder edge cases

- Guard drag initiation against locked compositions by checking
  data-timeline-locked ancestors in isLayerDraggable
- Show not-allowed cursor and reduced opacity on non-draggable layer rows
- Fire toast when attempting to drag a layer with no same-depth siblings
- Preserve z-index spacing on reorder by redistributing existing values
  instead of flattening to sequential integers
- Auto-set position:relative on unpositioned elements when z-index is
  applied so the stacking order actually takes visual effect
- Add tests for isLayerDraggable (anonymous, id, selector, locked, free)

* fix(studio): handle z-index ties in layer reorder + trim file sizes

- Fall back to sequential z-index when any duplicates exist in the
  sibling set, not just when all values are identical — fixes silent
  no-op reorder when tied values preserve DOM-order stacking
- Trim useDomEditSession.ts from 602 to 600 lines (CI file-size gate)

* test(studio): add duplicate z-index tiebreak test for layer sorting

Cover the [2, 1, 2] case where tied z-index values fall back to
reverse DOM order — locks the hasDupes fix against regressions.

* style(studio): fix oxfmt formatting in LayersPanel
2026-06-05 20:08:22 -04:00
..
2026-06-05 18:41:55 -04:00
2026-03-21 22:43:56 -07:00

@hyperframes/studio

Browser-based composition editor UI for Hyperframes. Provides a visual timeline, code editor, and live preview for building video compositions.

Install

npm install @hyperframes/studio

What it does

The studio is a React application with:

  • Visual timeline — drag, resize, and arrange elements on tracks
  • Code editor — edit HTML and GSAP scripts with CodeMirror (syntax highlighting, autocomplete)
  • Live preview — see changes in real time as you edit
  • Composition inspector — view and modify element properties

Development

The studio is embedded in the hyperframes preview command. To develop the studio UI itself:

cd packages/studio
bun run dev        # Start Vite dev server
bun run build      # Build for production
bun run typecheck  # Type-check

Tech stack

  • React 18/19, Zustand (state management)
  • CodeMirror 6 (editor)
  • Tailwind CSS (styling)
  • Vite (bundler)
  • Phosphor Icons

Documentation

Full documentation: hyperframes.heygen.com/packages/studio