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sigil-cairo

Cairo 2D graphics FFI bindings for Sigil.

Features

Image surface creation and management
Drawing context lifecycle (create, save, restore, destroy)
Path operations (rectangle, arc, curve-to, line-to)
Fill and stroke rendering
Source color (RGB/RGBA) and pattern support
Linear and radial gradients
Text rendering and extents
Transforms (translate, scale, rotate)
PNG output
Compositing operators
Matrix operations
Dash patterns
Convenience macros (with-cairo-context)

Usage

(import (sigil ffi)
        (cairo))

(let ((surface (cairo-image-surface-create CAIRO_FORMAT_ARGB32 200 200)))
  (with-cairo-context surface
    (lambda (cr)
      (cairo-set-source-rgb cr 0.2 0.3 0.8)
      (cairo-rectangle cr 10.0 10.0 180.0 180.0)
      (cairo-fill cr)))
  (cairo-surface-write-to-png surface "output.png")
  (cairo-surface-destroy surface))

Dependencies

sigil-stdlib
sigil-ffi

Requires Cairo system library (libcairo).

System Prerequisites

Cairo (libcairo)

Development

sigil deps install
sigil build
sigil test

License

BSD-3-Clause