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Fold _rgbacache into _imcache.#21910

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QuLogic merged 1 commit intomatplotlib:mainfrom
anntzer:rgbacache
Dec 14, 2021
Merged

Fold _rgbacache into _imcache.#21910
QuLogic merged 1 commit intomatplotlib:mainfrom
anntzer:rgbacache

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@anntzer anntzer commented Dec 10, 2021

Both caches are used when converting images to rgba; the only difference
is that rgbacache was specifically used for PcolorImage (via
PcolorImage.make_image) whereas imcache covered the rest (via
_ImageBase._make_image). One can instead use a single attribute (also
avoiding to duplicate their invalidation).

Also update the comment, and a bit the implementation, on
__getstate__: a long time ago imcache was (probably?) a non-picklable
custom subclass; now it is picklable but it still makes sense not to
pickle it.

PR Summary

PR Checklist

Tests and Styling

  • Has pytest style unit tests (and pytest passes).
  • Is Flake 8 compliant (install flake8-docstrings and run flake8 --docstring-convention=all).

Documentation

  • New features are documented, with examples if plot related.
  • New features have an entry in doc/users/next_whats_new/ (follow instructions in README.rst there).
  • API changes documented in doc/api/next_api_changes/ (follow instructions in README.rst there).
  • Documentation is sphinx and numpydoc compliant (the docs should build without error).

Both caches are used when converting images to rgba; the only difference
is that rgbacache was specifically used for PcolorImage (via
PcolorImage.make_image) whereas imcache covered the rest (via
_ImageBase._make_image).  One can instead use a single attribute (also
avoiding to duplicate their invalidation).

Also update the comment, and a bit the implementation, on
`__getstate__`: a long time ago imcache was (probably?) a non-picklable
custom subclass; now it is picklable but it still makes sense not to
pickle it.
@QuLogic QuLogic added this to the v3.6.0 milestone Dec 14, 2021
@QuLogic QuLogic merged commit e9958e1 into matplotlib:main Dec 14, 2021
@anntzer anntzer deleted the rgbacache branch December 14, 2021 08:18
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3 participants