Standard rendering contexts for the VMPrint layout engine.

Rendering contexts are the output surface for VMPrint. The engine produces a Page[] — a stream of absolute layout data — and a context is what those pages are painted onto. This architecture ensures that the same document can be rendered to PDF, SVG, or an HTML Canvas with identical typesetting.

This repository is a monorepo using npm workspaces.

npm install

Build all contexts in dual-mode (ESM and CJS):

npm run build

The output artifacts will be placed in the dist/ directory of each package.

Every context implements the standard Context interface defined in @vmprint/contracts. A context should contain zero layout logic; its only responsibility is to execute drawing commands (lines, shapes, text, images) against its target medium.

The @vmprint/context-pdf implementation includes built-in metrics and encoding logic for the 14 standard PDF fonts (Helvetica, Times, Courier, etc.), making it fully independent of external font managers for standard text rendering.

Apache-2.0