Cairo is a vector graphics library with
cross-device output support. It currently
supports the X Window System and in-memory image
buffers as output targets. It is designed to
produce identical output on all output media
while taking advantage of display hardware
acceleration when available (eg. through the X
Render Extension). It provides a stateful
user-level API with capabilities similar to the
PDF 1.4 imaging model and provides operations
including stroking and filling Bezier cubic
splines, transforming and compositing
translucent images, and antialiased text
rendering.