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Enable: low-level drawing and interaction
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Latest commit c685c44 May 20, 2016 @corranwebster corranwebster Merge pull request #230 from enthought/fix/setup-build
Fix for build issues
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docs Read the docs version directly from enable._version Oct 1, 2015
enable Start to fold in pyface qt4 test helpers. May 17, 2016
examples Merge branch 'master' into feature/python3 Apr 29, 2016
kiva Just skip broken test. May 20, 2016
.coveragerc add coverall to the travis ci builds Feb 4, 2014
.gitignore Add the auto-generated enable/ to .gitignore May 5, 2015
.travis.yml Remove cd to integration tests from .travis.yml; run tests from subdir. May 19, 2016
CHANGES.txt Start development of version 4.6.0 Mar 24, 2015
LICENSE.txt * Egg-building infrastructure improvements (adding README.txt, LICENS… Aug 13, 2007 Add docs and examples to the source distribution Sep 29, 2015
README.rst add six as a depedency Sep 12, 2015
TODO.txt Update TODO.txt Apr 9, 2015 Make build wheel script executable. Sep 11, 2015
codecov.yml Create codecov.yml May 11, 2016
image_LICENSE.txt fixed imports to new locations Apr 21, 2011
image_LICENSE_CP.txt Updating license files to match the format of the other projects. Jul 30, 2008
image_LICENSE_Eclipse.txt converting to unix line endings and removing excess whitespace Jan 28, 2011
image_LICENSE_Nuvola.txt converting to unix line endings and removing excess whitespace Jan 28, 2011
image_LICENSE_OOo.txt converting to unix line endings and removing excess whitespace Jan 28, 2011 Create custom build_py based on Numpy's version, but using 2to3. May 20, 2016
travis-ci-requirements Merge branch 'master' into feature/python3 Apr 29, 2016


enable: low-level drawing and interaction

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The Enable project provides two related multi-platform packages for drawing GUI objects.

  • Enable: An object drawing library that supports containment and event notification.
  • Kiva: A multi-platform DisplayPDF vector drawing engine.


The Enable package is a multi-platform object drawing library built on top of Kiva. The core of Enable is a container/component model for drawing and event notification. The core concepts of Enable are:

  • Component
  • Container
  • Events (mouse, drag, and key events)

Enable provides a high-level interface for creating GUI objects, while enabling a high level of control over user interaction. Enable is a supporting technology for the Chaco and BlockCanvas projects.


Kiva is a multi-platform DisplayPDF vector drawing engine that supports multiple output backends, including Windows, GTK, and Macintosh native windowing systems, a variety of raster image formats, PDF, and Postscript.

DisplayPDF is more of a convention than an actual specification. It is a path-based drawing API based on a subset of the Adobe PDF specification. Besides basic vector drawing concepts such as paths, rects, line sytles, and the graphics state stack, it also supports pattern fills, antialiasing, and transparency. Perhaps the most popular implementation of DisplayPDF is Apple's Quartz 2-D graphics API in Mac OS X.

Kiva Features

Kiva currently implements the following features:

  • paths and compiled paths; arcs, bezier curves, rectangles
  • graphics state stack
  • clip stack, disjoint rectangular clip regions
  • raster image blitting
  • arbitrary affine transforms of the graphics context
  • bevelled and mitered joins
  • line width, line dash
  • Freetype or native fonts
  • RGB, RGBA, or grayscale color depths
  • transparency


You must have the following libraries installed before building the Enable/Kiva project:

Enable/Kiva also have the following requirements:



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