CHANGES.txt

================
Enable CHANGELOG
================

Enable 6.0.0
============

This is a major version update to add support for Python 3.11, PySide 6.4+, and
TraitsUI 8.  As part of this update, a number of backwards-incompatible changes
were made.  Perhaps the most significant of these was the removal of the
partially implemented and buggy OpenGL Kiva backend, but it also included
removing support for legacy Numeric APIs, changing modules with "qt4" in their
name to use "qt" instead, some changes to make the various Kiva APIs more
consistent, and some changes to the mapping of font families to bring them in
line with documentation and other libraries.

Building Enable, with its complex dependencies has sometimes been challenging
for users, so this release includes Github actions that use cibuildwheel to
automatically build binary wheels across a wide variety of Python versions,
operating systems and architectures and upload them to PyPI.  This should make
pip-based installs of Enable significantly easier.

Finally, as is usual for a release, there are a number of smaller bugfixes and
minor improvements, such as bringing the PyCairo and Quartz backends back into
a working state.

Thanks to:

* Mark Dickinson
* Chengyu Liu
* Didrik Pinte
* Corran Webster
* John Wiggins

Enhancements
------------

* Move `kiva.image` to `kiva.oldagg` and make `kiva.image` a stub (#1054)
* Map `MODERN` fonts to monospace and `TELETYPE` to typewriter (#977)
* Normalize setting of colors across backends (#1052)
* Support for PySide 6.4+ (#1045, #1053)
* Remove support for old Numeric APIs (#1011)
* Python 3.11 support (#1042)
* Remove OpenGL backend (#1029)
* Code modernization (#933, #1015)

Fixes
-----

* Fix `draw_path_at_points` for the Quartz Kiva backend (#1051)
* Do explicit type conversions for PyQt5 on Python 3.10+ (#1041)
* Handle namespace changes for Pyface 8 and TraitsUI 8 (#1025, #1028, #1033, #1043)
* Better feedback for constraints examples if kiwisolver unavailable (#1019)

Testing and CI
--------------

* Automated wheel building (#1039)
* Maintenance of CI and tests (#1007, #1035, #1044)

Enable 5.3.1
============

This is a bugfix release that aims to improve compatibility and completeness
of the various Kiva backends.  In particular, there are improvements for font
selection and rendering, and some fixes for path and curve rendering
(particularly for arcs).  There are still some discrepancies in how things are
drawn, but it is more likely that something reasonable will be produced on all
backends.

This also includes some fixes provided by Brecht Machiels to return the
wxPython backend to a working condition.

On the build and CI front, we have added SWIG to the pyproject.toml, and no
longer ship any Cython-generated C++ files.  With these changes it should be
possible to pip install Enable in an environment with the appropriate C/C++
compilers.

Thanks to:

* Mark Dickinson
* Brecht Machiels
* Rahul Poruri
* Corran Webster
* John Wiggins

Fixes
-----

* Fix the SCRIPT font family (#975)
* Improve font rendering (#973, #978, #980, #990)
* Fix curve and path rendering (#970, #987, #988)
* Correct Quartz backend string encoding (#966)
* Restore the WxPython backends to working order (#950)

Documentation
-------------

* Sphinx copy button support in documentation (#948)

Build and Continuous Integration
--------------------------------

* add a github workflow for publishing releases to PyPI (#967)
* don't ship Cython-generated C++ files (#958)
* add SWIG to pyproject.toml dependencies (#954)

Enable 5.3.0
============

This release focused on support for PySide6, modernization of Traits code,
and improving font handling.

Thanks to:

* Aaron Ayres
* Mark Dickinson
* Frank Fishburn
* Rahul Poruri
* Joris Vankerschaver
* Corran Webster
* John Wiggins

Enhancements
------------

* A new font trait, including support for Pyface Font objects, including
  support for more font weights (#929)
* A new cross-toolkit Font editor that uses Enable internally (#928)
* Unification of the various color traits (#917, #924)
* Support for PySide6 (#897, #900)

Fixes
-----

* Fix incorrect fallback font path (#931)
* Ensure toolkits are initialized before they are used (#921)
* Fix incorrect trait definitions for mouse pointer traits (#911)
* Validate line dash arguments (#910)
* Fixes for font file parsing and discovery (#906, #918, #919)
* Support pyparsing >= 3 for SVG parsing (#888)

Documentation
-------------

* Improvements to Kiva documentation (#914)

Maintenance
-----------

* Modernization of trait definitions (#925)

Build and Continuous Integration
--------------------------------

* CI is now run on Python 3.8 and PySide 6 (#927)
* Replace use of Hypothesis by unittest subTest (#912)
* Use Ubuntu 18.04 for CI (#889)
* Some tests were not being run in CI (#929, #937)

Enable 5.2.1
============

Fixes
-----

* Fix FontManager bug when no fonts are available (#871)
* Fix the dpi rounding issues with newer versions of pillow (#875)

Enable 5.2.0
============

Thanks to:

* Aaron Ayres
* Rahul Poruri
* John Wiggins

Enhancements
------------

* Provide better support for mixed writing systems (#763, #764 #767, #768)

Fixes
-----

* Fix listeners hooked up using observe but unhooked using on_trait_change (#766)
* Handle preferred size computation when container isnt resizable (#778)
* Fix alignment trait on "HStackedContainer" (#780)
* Update custom marker as scale_ctm expects floats (#782)

Documentation
-------------

* Convert # to #: to improve docstrings in markers (#784)
* Document EnableTestAssistant (#800)

Maintenance
-----------

* Remove "use_draw_order" code path (#777)
* Add useful objects to "enable.api" (#779, #788)
* Remove Python 2 or 3 only conditionals (#785, #810)
* Remove dead code (#786)
* Remove deprecated "str_to_font" and "points_in_polygon" functions. (#787)
* Update super usage (#789, #790)
* Remove deprecated intercept_events trait on Container (#801)
* Use non deprecated font families styles etc (#806)
* Replace use of deprecated GetItemPyData with its new replacement GetItemData (#807)
* Remove unused tk related drawing methods (#809)
* Remove old deprecated drawing methods (#814)
* Remove AbstractWindow.bg_color trait (#816)
* Remove unused enable/trait_defs/ui/wx/enable_rgba_color_editor.py module (#817)
* Deal with __getstate__ methods (#804, #841)

Build and Continuous Integration
--------------------------------

* Skip markers tests if not using agg (#799)
* Add pyproject.toml to specify cython and numpy as build deps (#808, #836, #847)
* Verify swig version in setup.py (#811)

Enable 5.1.1
============

Thanks to:

* Kit Yan Choi

Fixes
-----

* Fix artefact in Qt caused by a wrong QRectF size. (#820)

Enable 5.1.0
============

Thanks to:

* Aaron Ayres
* Rahul Poruri
* Corran Webster
* John Wiggins

Enhancements
------------
* Create an independent renderer for draw_marker_at_points (#724)
* Add IPython display support (#389)
* Add a way for applications to supply custom fonts (#711)
* Add Brush classes (#689)
* Add a benchmark program for comparing Kiva backends (#647, #653, #659, #661, #666, #667, #668, #671, #673, #677)
* Add a celiagg Kiva backend for Wx (#608)

Changes
-------
* Add new on_drag_leave Enum trait to DragTool (#712)
* Refactor Font management and selection (#693, #695, #700, #701, #702, #704, #707, #714, #723, #726)
* Accept PIL Image instances in kiva.agg draw_image() (#682)
* Supply DPI when saving images (#678)
* Add face_index support to celiagg and kiva.agg backends. (#605)

Fixes
-----
* Catch the exception thrown by AGG (#751)
* Don't create a ref cycle in AbstractWindow.cleanup() (#749)
* Set encoding when saving svg file (#735)
* Reorder the preferred fonts list (#698)
* Extract a better property dict from TTF fonts (#697)
* Get the Qt Quartz backend working again (#679)
* Fix set_font() for PDF and SVG backends (#674)
* Fix QPainter fill_path (#660)
* Fix save() in the quartz backend (#645)
* Fix font selection in the QPainter backend (#641)

Documentation
-------------
* Mention return value for draw_marker_at_points (#754)
* Update constrained layout documentation (#746)
* Rearrange the documentation (#732)
* Add documentation for ComponentEditor (#730)
* Add some developer docs for Kiva's FontManager (#725)
* Document Enable trait types (#721)
* Add documentation for mouse events (#717)
* Add documentation for AbstractWindow (#718)
* Ignore Kiva backends in the API docs (#703)
* Add a Kiva tutorial (#676)
* Document how colors work in Kiva (#684)
* Document image drawing in Kiva (#680)
* Place Kiva docs before Enable docs (#675)
* Document GraphicsContext state (#672)
* Add documentation for CompiledPath (#662)
* Add an intro section for Enable docs (#658)
* Update the Kiva GraphicsContext documentation (#644)
* Document the available Kiva backends (#646)
* Reorg docs and document Kiva text rendering (#639)

Testing
-------
* Allow sending "mouse move" with left/right down with EnableTestAssistant (#715)
* Add tests for str_to_font (#705)

Maintenance
-----------
* Deprecate the str_to_font in enable.base (#748)
* Use BGRA32 for celiagg's default pixel format (#729)
* Require a minimum of Traits 6.2.0 (#755)
* Don't test drawing on Qt4 [due to lack of Pillow support] (#745)
* Remove kiva.fonttools.sstruct (#699)
* Remove old/broken code (#692)
* Add an 'oldagg' backend pointing to kiva.agg (#669)
* Replace uses of on_trait_change with observe (#656, #663, #665, #654)
* Normalize some signatures of Kiva methods (#691)
* Add ContextMenuTool to enable.tools.pyface.api (#690)
* Update celiagg backend to use 2.0.0 API (#633)

Build and Continuous Integration
--------------------------------
* fix edmtool test-all command (#655)
* Install cron job dependencies correctly (#637)
* Add Cython and SWIG to cron job build deps (#607)

Enable 5.0.1
============

Fixes
-----

* Fix KeySpec.from_string (#638)
* Don't mess up the component bounds in HiDPI mode (#635)

Enable 5.0.0
============

Thanks to:

* Aaron Ayres
* Per A. Brodtkorb (@pbrod)
* Alexandre Chabot-Leclerc
* Kit Yan Choi
* Jim Corson
* Mark Dickinson
* Matt Hancock
* Hugo van Kemenade (@hugovk)
* Robert Kern
* Midhun Madhusoodanan (@midhun-pm)
* Shoeb Mohammed
* Zach Pope
* Rahul Poruri
* Jonathan Rocher (@jonathanrocher)
* Corran Webster
* John Wiggins

Enhancements
------------

* Contribute examples to ``etsdemo``. (#494)
* Add ``Container.components`` setter. (#387)

Changes
-------

* Add HiDPI support (#591, #595)
* Accept a PIL Image as input to ``draw_image`` (#590)
* Use Pyface-style toolkit selection. (#571)
* Remove the old and outdated pyglet and vtk backends. (#570)
* Remove the PIL/pillow kiva compatibility wrapper code. (#569)
* Remove quartz ``CGGLContext``. (#515)
* Make kiva explorer a popup. (#510)
* Remove import time side effect of creating the font cache in the
  ``font_manager``. (#488)
* Drop support for Python <= 3.6 from the codebase. (#384, #461, #462, #463,
  #464, #465, #479, #506)
* Split out the GL backend. (#392)
* Add opacity to null-toolkit-defined rgba_color_trait. (#374)
* Don't use a ``GraphicsContext`` for storage in the ``Image`` component. (#251)

Fixes
-----

* Allow scaling in ``kiva.agg`` ``draw_marker_at_points`` (#594)
* Celiagg's ``clip_to_rect`` should respect the transform matrix (#592)
* Handle ``ETSConfig.toolkit == 'qt'`` (#587)
* Undo removal of get_mac_context import (#586)
* Allow unhandled key and mouse-wheel events to bubble up. (#552)
* Fix ``Font.findfontname`` ``AttributeError`` when the default font manager
  has not been initialized. (#531)
* Fix ``AttributeError`` on Python 3.9 due to the use of removed API in
  ``xml``. (#492)
* Make font style- and stretch- check case insensitive. (#405)
* Add a missing ``self`` argument to a method. (#468)
* WxPython4 fixes. (#403)
* Pass file object into ``TTCollection`` and close when done. (#378)
* Fix ``DeprecationWarning``\s due to escape characters. (#371)
* Don't mess with logging configuration. (#370)
* Fix KeyError while parsing ttfFontProperty. (#365)

Documentation
-------------

* Add documentation for toolkit/backend selection (#597)
* Add an example of controlling HiDPI usage (#596)
* Add an Image Explorer demo (#589)
* Improve module docstrings in kiva and enable api modules. (#518, #564)
* Mention in the README ``libglu1-mesa-dev`` is a build dependency on Linux. (#546)
* Use templates when generating api docs for ``enable`` and ``kiva``. (#526)
* Ignore toolkit-specific modules in api documentation. (#522, #527)
* Cleanup and fix errors in demos and examples. (#388, #402, #508, #511)
* Add a click command to build docs. (#499)
* Fix failing documentation build on Python 3. (#478)
* Expand ``DragTool`` comments. (#452)
* Add a demo runner for enable. (#383)

Testing
-------

* Clean up some of the agg tests. (#573)
* Add a unit test for drawing images. (#572)
* Unskip most of the ``TestGLDrawing`` tests on OSX. (#540)
* Address resource warnings because of open file handles. (#529)
* Rename test module so it gets discovered by unittest. (#528)
* Fix tests for PySide2 and add PySide2 to the testing matrix. (#484)
* Make tests for font manager quieter. (#487)
* Use unittest as the test runner instead of nose. (#475)
* Switch on default warnings flag for CI test command. (#469)
* Replace use of ``tempfile.mktemp`` with ``tempfile.NamedTemporaryFile``. (#456)
* Add ``dclick`` option to test assistant. (#444)

Maintenance
-----------

* Remove files that are not used or needed. (#578)
* Use a standard copyright header. (#577)
* Remove ``is_string_like``. (#568)
* Stop using deprecated trait handlers. (#567)
* Use kiva api modules where possible. (#565)
* Use ``traits.api``, ``traitsui.api`` and ``pyface.api`` where possible. (#566)
* Remove outdated/broken debugging constructs. (#560)
* Cleanup non-standard use of ``traitsui.api`` imports. (#561)
* Add ``tox.ini`` for flake8 control. (#559)
* Run black on enable and kiva. (#557, #558)
* Remove outdated/unnecessary files. (#521)
* Remove ``TODO.txt`` file from the manifest. (#523)
* Use ``pyface.undo`` instead of ``apptools.undo``. (#507)
* Remove module-level ``findfont`` in ``font_manager``. (#505)
* Remove ``USE_FONTCONFIG`` in ``font_manager``. (#498)
* Warn if attempted ``pyface`` and ``traitsui`` imports fail. (#481)
* Remove todo files in the repository. (#474)
* Add disclaimer in complaince with FreeType License. (#477)
* Add or update README files to mention what are vendored code. (#476)
* Remove unnecessary empty return statements. (#455)
* Replace default list argument with None. (#467)
* Use ``is`` instead of ``==`` when comparing to ``None``. (#457)
* Remove dead/commented out code. (#466)
* Remove EOF markers from files. (#453)
* Fix test failures when testing against TraitsUI 7.1.0. (#446)
* Update badges and links in README. (#420)
* Regenerate ``_cython_speedups.cpp`` for compatibility with Python 3.8. (#376)
* Defer imports from ``font_manager`` in ``font`` module. (#368)

Build and Continuous Integration
--------------------------------

* Update ``setup.py`` to allow creation of release candidates. (#575)
* Provide the right path to the version file on windows. (#563)
* Unconditionally list ``pillow`` as a runtime dependency. (#562)
* Move to a single ``setup.py`` file. (#535)
* Declare ``setuptools`` as a test dependency. (#547)
* Move from Travis, Appveyor CI to GitHub Actions CI. (#538, #539. #542, #544,
  #548, #549, #579)
* Remove code coverage reporting on PRs. (#536)
* Unset and remove ``use_2to3`` from ``setup.py``. (#520)
* Update CI requirements. (#513)
* Require wx toolkit CI job to pass. (#459)
* Use config when bootstrapping an edm environment. (#489)
* Remove install requirement version numbers from README. (#470)
* Make improvements to ``edmtool`` utility. (#454)
* Fix missing new dependencies in cron job. (#448)
* Use PyQt5 from EDM instead of PyPI. (#437)
* Re-add Wx as a supported toolkit. (#432)
* Update cron job to install dependencies from git source. (#428)
* Use Python 3.6 as the default runtime in edmtool. (#430)
* Make CI green again and remove Python 3.5 from CI. (#424)
* Add optional demo dependencies to ``setup.py``. (#386)
* Upgrade to EDM 2.0.0. (#373)
* Prevent nose from capturing logs. (#367)
* Fix the environment name used in CI. (#366)

Enable 4.8.0
============

Enhancements
------------

* PR #302: Qt5 Support
* PR #330: Add support for ttc fonts
* PR #345: Add more Qt mouse button names

Fixes
-----

* PR #312: Ensure contiguity for memoryview arrays in points_in_polygon
* PR #317: Fix rect drawing with celiagg
* PR #321: Kiva PDF backend: Don't clobber a passed-in font object
* PR #331: Prevent context menus in Enable Qt widgets.
* PR #346: Fix TypeError when passing unicode args to agg gradient methods
* PR #350: Don't fail when empty arrays are passed to points_in_polygon
* PR #354: Fix typo in MANIFEST.in
* PR #358: Fix paths to static files.

Maintenance
-----------

* PR #322: Remove `sudo: false` from Travis config
* PR #343: Fix code which triggered DeprecationWarnings
* PR #347: Setup Appveyor
* PR #348: Update EDM version for CI script
* PR #349: Update `unittest` imports
* PR #352: Quick and Dirty Documentation Improvements
* PR #353: Update Travis CI configuration to be compatible with Ubuntu Xenial.
* PR #356: CI failures on wx, python 2.7, win expected
* PR #357: Remove unnecessary Ubuntu package.

Enable 4.7.2
============

Fixes
-----

* PR #310: Remove locale-dependence in Agg text rendering
* PR #309: FIX: Ensure contiguous transposed arrays
* PR #305: Ignore X11 fonts on macOS
* PR #299: BUG: Remove use of C API not available in Python 3

Maintenance
-----------

* PR #308: Update to the most recent release of fonttools

Enable 4.7.1
============

Fixes
-----

* PR #295: Use uint8_t from numpy instead of stdint

Enable 4.7.0
============

This is a maintenance release, with the most significant change being an
upgrade to the vendorized Agg code. This should resolve issues with hard
crashes in (packages that use) Kiva.

Maintenance
-----------

* PR #288: Upgrade to a newer Agg version
* PR #287: Improve mouse wheel support
* PR #285: Add Python 3.5, 3.6 to CI
* PR #284, #289, #290: Support Python 3 without 2to3
* PR #281: Use EDM for CI testing
* PR #280: Clean up circular import in test

Enable 4.6.1
============

Fixes
-----

* PR #257: Fix a problem encountered when installing from pip


Enable 4.6.0
============

Enhancements
------------

* PR #246: Kiva explorer demo
* PR #222: New markers: 2 triangles, star, cross-plus, 2 hexagons, and pentagon
* PR #209: Python 3 Support
* PR #207: Viewport resizing

Fixes
-----

* PR #243: Make savage compatible with newer PyParsing versions.
* PR #241: Fixed the trs_factor function
* PR #238: points_in_polygon now returns a bool array
* PR #234: allow multiple gradient stops with wx toolkit
* PR #231: Be deterministic about initial state of viewport position and bounds
* PRs #215 & 217: Support for Pillow 3.0
* PR #205: Fix scrolling problem with Qt native scrollbar
* PR #203: numpy.rank() is deprecated


Maintenance
-----------

* PR #244: Remove support for Mac font suitcases.
* PR #240: add quartz to MANIFEST file
* PR #232: Don't assume window is MockWindow when dealing with pointer position
* PR #230: Fix for build issues
* PR #227: Create codecov.yml
* PRs #226 & #201: Fix g++ version string parsing
* PR #223: Fix SVG Tests
* PR #214: Add docs and examples to the source distribution
* PR #206: Containerize Travis CI Builds
* PR #195: Multiple build environments
* PR #177: fixes for recent swig
* PR #192: Add the auto-generated enable/_version.py to .gitignore
* PR #191: fix missing framework when building kiva.quartz.
* PR #180: fix minor errors in sphinx build



Enable 4.5.0 (March 23, 2015)
=============================

Enhancements
------------

 * PR #138: Optional constraints-based layout.
 * PR #140: Add a base class for drag and drop tools, example and test support.
 * PR #150: Add a very basic Image component
 * PR #160: Basic testing for kiva backends.
 * PR #168: Simple push-button and checkbox tool.
 * PR #167: Add tools that support Apptools Undo/Redo.

Fixes
-----

 * PR#139 Significant code clean-up, modernization, test improvement and
   documentation for Kiva.
 * Multiple fixes for breaks to Travis-CI builds.

Enable 4.4.0 (May 1, 2014)
==========================

Enhancements
------------

 * Added a test assistant to aid in writing unit tests for Enable/Chaco code (3cb6d22 & a5b8cb9)
 * Added Drag & Drop support for Qt (4196bc8)
 * Added a context menu tool (0c27475)

Fixes
-----

 * PR #92: Fixed the example support code to allow Chaco demos to run on Qt
 * PR #94: Fixed the examples so that they would run on Qt
 * PR #102: Fixed a transparency drawing bug in the Qt image backend
 * Fixed various bugs which caused test failures in Enable and Chaco (PRs #103,
    #105, #110, #113)
 * PR #107: Fixed a memory leak in the QPainter kiva backend
 * PR #116: Fixed the incomplete implementation of the resize tool
 * PR #118: Fixed a gradient rendering bug that sometimes caused segfaults


Enable 3.4.1 (March 3, 2011)
============================

Fixes
-----

* Removed OnPaint method from KivaRenderPanel in savage. On Windows there
  were competing handlers for the paint event. The OnPaint method expected a
  certain order, which varied by Platform
* QImage constructor args were changed to use QByteArray to match changes to
  PySide API changes in PySide RC1


Enable 3.4.0 (Jan 26, 2011)
===========================

Enhancements
------------

* Major refactor of kiva backends to make setting the desired backend more resilient and flexible.
* Added support for PySide
* Qt backend no longer uses Agg internally, instead it uses QPainter.
* Improved gradient support in Quartz backend
* Improved cairo backend
* Updated to use variation of rev 8713 of matplotlib font_manager.py

Fixes
-----
* Fixed cubic spline rendering in OpenGl backend
* Fixed gradients using relative coordinates
* Fixed object-space gradients


Enable 3.3.2 (October 15, 2010)
===============================

Enhancements
------------

* Context manager methods were added to the Kiva GraphicsContext class, so
  now, instead of this common pattern for a GraphicsContext gc:

      gc.save_state()
      try:
          # Do stuff with gc...
      except:
          gc.restore_state()

  one can do this::

      with gc:
          # Do stuff with gc...

* Stacked layout containers were added.
* qt4_backend: Added Tony Yu's patch to better handling keypresses in Qt4 when modifier keys are pressed (r25644).
* vtk_backend: Added John Wiggins patch which adds key bindings to EnableVTKWindow (r25796).
* The Kiva backend for the Mac, implemented in ABCGI.pyx, is now processed with cython instead of pyrex.


Fixes
-----

* vtk_backend: Got rid of timer that was causing performance problems on
  the Mac by looking for the "StartEvent" on the RenderWindow to determine
  when we are about to do a vtk render. (r25605)
* savage:  Avoid the wx-specific FileInspector in Sike and use the
  CodeEditor directly. (r25742)
* Exceptions were updated to use the new Exception classes in several places.


Enable 3.3.1 (Feb 24, 2010)
===============================

Enhancements
------------

* Added dimming mask to disabled buttons when using wx backend (r25405).
* Added toggle_label and toggle_tooltip from Brad Buran's patch (r25414).
* vtk_backend: Made _redraw call _paint to force an immediate draw.
  Added a request_render callable slot that will be called instead of
  self.control.render if set. This allows renders to be coordinated to
  avoid duplicate renders. (r25423)
* Added option of making center section of compass clickable by setting
  "enable_center" to True. (r25492)
* kiva agg backend: fixed minor issues causing compiler warnings (r25498)

Fixes
-----

* Fixed hover_tool so it imports correctly under the 'null' toolkit, as
  reported on mailing list (r25407).


Enable 3.3.0 (Feb 24, 2010)
===========================

Enhancements
------------

 * Updated freetype to 2.3.12.  This makes our text look prettier, and also fixes some compatibility issues with OS X 10.6.
 * Moved Shape from examples into enable.primitives
 * Improved ability to find the Qt SVG IconEngine for the SVGButtonEditor
 * Improved painting in Wx by as much as 30%
 * Added repeat and reflect gradient fill methods

Fixes
-----

 * Fixed diamond marker to use the native Agg marker
 * Fixed drawing elliptical curves on OS X
 * Fixed scaling transforms affecting gradients
 * Fixed the "window" property on Enable components to recurse up their container hierarchy to return the default window associated with a component.
 * Viewports now correctly implement is_in() and components_at(), taking their own boundaries into account.
 * Removed explicit dependency on TraitsBackendWx in Enable
 * Fixing logic in enable.example_support, so that it no longer just uses wx if wxPython is installed, but rather looks at ETSConfig.toolkit.
 * Fixing some math in the computation of setting outer_x2 and outer_y2 attributes of components.

One final note is that the "enable2" legacy backwards compatibility package will
be removed by the next release.  If you have any code that imports from
"enable2" and the DeprecationWarnings haven't been sufficiently
motivating thus far, please heed them and change your imports to use
"enable"!


Enable 3.2.0 (July 15th, 2009)
==============================

enable Enhancements
-----------------------------

 * Added Slider and Compass widgets
 * Added an OverlayContainer (almost identical to the one in Chaco)
 * Added ImageGraphicsContextEnable class so that one can always import a Kiva Image backend-based GraphicsContextEnable
 * renaming marker_trait to MarkerTrait (the old name is still permitted forbackwards compatibility, but should be avoided)
 * Moved the scatter_markers module from Chaco to Enable, so that Enable components can use MarkerTrait
 * Added an experimental VTK backend for Enable, along with an example
 * Changed SVGButtonEditor toggle to draw a SVG under the button SVG instead of drawing a plain box
 * Added labels for SVGButton
 * Improving backbuffering performance on the Mac by creating the layer context from the window context instead of from a bitmap.
 * Adding a "fixed_preferred_size" trait to Components, so that relative size preferences can be expressed amongst different components in a container


enable Fixes
----------------------

 * Improved the backend selection to match the Traits UI backend unless ETSConfig.enable_toolkit is explicitly set
 * Fixed demo_main() in example_support.py so that it doesn't crash IPython
 * Fixed RGBAColorTrait so it can be used with the null toolkit
 * Changed the "sys_window" color to be the same as the Traits UI "WindowColor" constant
 * Fixed backend_cairo's get_text_extent() implementation to match other backends


kiva Enhancements
---------------------------

 * Added basic gradients to Kiva

kiva Fixes
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 * Fixed Python 2.6 datatype errors
 * Fixed memory leak as reported in ticket 1815
 * The macport test is only run on Darwin systems
 * Removed deprecated calls to old numpy APIs