⚠️ Repository Moved to Monorepo

This repository is now deprecated and is no longer maintained here. All development, issues, and pull requests have been moved to the primary monorepo:

👉 vmprint

Please update your bookmarks and direct any contributions or issues there. Thank you!

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VMPrint Contexts

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.

Context Packages

Package	Purpose	Technology
@vmprint/context-pdf	Production PDF	PDFKit
@vmprint/context-canvas	Browser Preview	SVG-backed Canvas
@vmprint/context-pdf-lite	Lightweight PDF	jsPDF

Development

This repository is a monorepo using npm workspaces.

Installation

npm install

Building

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.

Architecture

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.

Standard PDF Fonts

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.

License

Apache-2.0