Difference between revisions of "Updating your Extension for 1.0"

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This is a preliminary and incomplete list of actions to take for updating Python extensions for Inkscape 1.0:
This was a preliminary and incomplete list of actions to take for updating Python extensions for Inkscape 1.0. It has been moved to the [https://inkscape.gitlab.io/extensions/documentation/authors/update1.0.html extensions repository documentation].
 
[[Category:Extensions]]
== Updating *.inx files ==
 
=== Remove dependency listings ===
 
Remove the dependency listings for the following modules:
 
* bezmisc.py
* coloreffect.py
* cspsubdiv.py
* cubicsuperpath.py
* ffgeom.py
* inkex.py (removal not strictly required)
* pathmodifier.py
* simplepath.py
* simplestyle.py
* simpletransform.py
* more?
 
This change is backwards compatible (as long as the user has a fully functioning Inkscape installation).
 
== Updating *.py files ==
 
=== Collecting the options of the extension ===
 
# Instead of <code>inkex.Effect.OptionParser.add_option</code>, your extension should now use <code>inkex.Effect.arg_parser.add_argument</code>.
# The 'type' option now works with variables instead of strings. Use <code>int</code> instead of <code>"int"</code> (same for float,...).
# The 'inkbool' type is now <code>inkex.inkbool</code>.
# <code>action="store"</code> can be removed.
 
These changes are not backwards compatible. The old options will still work, but are deprecated and should no longer be used when you develop your extension for Inkscape 1.0 or higher.
 
=== Replace specific functions ===
 
# <code>pathmodifier</code> is now <code>TODO (see https://gitlab.com/inkscape/extensions/issues/24)</code>.
 
=== Test run your extension ===
 
Many functions, when run, will still work, but they will give you a deprecation warning, with instructions what to replace them by.
 
E.g. <code>inkex.Effect.selected</code> is replaced by <code>inkex.Effect.svg.selected</code> - however, most replacements do not follow this naming scheme translation.
 
These changes are not backwards compatible.
 
=== Writing Tests ===
 
Previously Inkscape didn't require any unit testing for code, you should now write test code. If you expect your module to be included into the Inkscape extensions repository and included in the shipped Inkscape release, then a test suite file should be made in the tests directory for your extension. It should test each aspect of your extention and exercise all assumptions.
 
If you are writing a stand alone extension that users will install themselves, there is no strict requirement for tests. But having them will greatly improve your code and your ability to upgrade the code later. You can have tests in your own folders and use the extensions setup.py as a harness to run them (a setup.py file is also useful for installing your python code as a non-inkscape related python module, which might be useful too) See python documentation for creating packages.
 
=== Python 3 / Python 2 compatibility ===
 
Test your extension with both Python 2 and Python 3. With the updated extensions, Inkscape does no longer require Python 2, so some users will probably be using Python 3, and may no longer have Python 2 installed on their system. See [[Extension_Interpreters]] for how to set the Python version for your extension (for testing).

Latest revision as of 19:02, 3 March 2022

This was a preliminary and incomplete list of actions to take for updating Python extensions for Inkscape 1.0. It has been moved to the extensions repository documentation.

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