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Miguel Ángel
0150a0a1b4
- Zoom anchors to cursor position instead of always zooming toward center. The resolvePreviewWheelZoom function now accepts cursorX/cursorY (offset from viewport center) and uses the standard zoom-to-point formula to adjust pan so the content point under the cursor stays fixed. - Add visible "Reset" button (bottom-right) showing current zoom % when not at fit zoom. Driven by settledZoom state that updates after the 200ms settle debounce, so no re-renders during active zoom gestures. - Fix border-expands-inward bug: scaleIframeToFit in the player now uses offsetWidth/offsetHeight instead of getBoundingClientRect. The latter returns values inflated by ancestor CSS zoom, causing double-scaling that made the iframe appear smaller than its container. - Fix zoom HUD appearing during pan: split applyZoom (shows HUD) from applyPan (silent) so trackpad/middle-mouse panning no longer flashes the zoom percentage overlay. - Fix stale closure performance regression: replace stageSize in effect dependency arrays with stageSizeRef pattern. The old deps caused wheel and pointer handlers to re-register on every viewport resize. - Widen pan clamp range (Math.abs instead of Math.max(0,...)) so content can float within the viewport when zoomed below fit — required for zoom-to-cursor to work correctly at any zoom level. Closes #900
@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
Related packages
@hyperframes/core— types and parsers used by the editorhyperframes— CLI that serves the studio viahyperframes preview