Hi,

I released rcairo(*1) 1.8.3 that supports Ruby 1.9.2:
  http://raa.ruby-lang.org/project/rcairo/

(*1) A library to use cairo(*2) from Ruby.

(*2) A 2D graphics library that is used by
     GTK+/Firefox/WebKit/... as rendering backend and worked
     on multi-platform. cairo can output PDF, PNG, SVG and
     so on too.

  http://cairographics.org/rcairo/

  http://cairographics.org/releases/rcairo-1.8.3.tar.gz

  http://cairographics.org/releases/rcairo-1.8.3.tar.gz.md5
  ddc6470c59c3a2adcda836544b4dc5bd  rcairo-1.8.3.tar.gz

  http://cairographics.org/releases/rcairo-1.8.3.tar.gz.sha1
  0b4bbfcb3080feb7afef6f6b12e634eff35f3a80  rcairo-1.8.0.tar.gz

  For Windows user:
    % gem install cairo

NOTE: The rcairo repository had been movoed to GitHub.
  http://github.com/rcairo/rcairo

New Features
------------
  * Support cairo 1.8.10.
  * Support Ruby 1.9.2. (reported by Tasuku SUENAGA and kimura wataru)
  * Fix RGV -> HSV conversion. (patch by Yuta Taniguchi)
  * Support Cairo::Color as Hash key.

Thanks
------
  * Yuta Taniguchi
  * Tasuku SUENAGA
  * kimura wataru

Thanks,
--
kou