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Deprecate LocationEvent.lastevent. - #25101

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ksunden merged 1 commit into
matplotlib:mainfrom
anntzer:le
Feb 8, 2023
Merged

ksunden merged 1 commit into
matplotlib:mainfrom
anntzer:le

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@anntzer anntzer commented Jan 27, 2023

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Keeping around lastevent can delay garbage collection of a torn-down axes, and can also keep around an actual GUI event object (guiEvent) associated with a long-torn down widget, which can be problematic for some GUI toolkits.

Instead, only keep track of the last inaxes attribute.

Unfortunately there are no tests for axes_enter_event/axes_leave_event, but this can be manually tested by running the
event_handling/figure_axes_enter_leave.py example.

See #24820, #22211 (comment).

PR Summary

PR Checklist

Documentation and Tests

  • Has pytest style unit tests (and pytest passes)
  • Documentation is sphinx and numpydoc compliant (the docs should build without error).
  • New plotting related features are documented with examples.

Release Notes

  • New features are marked with a .. versionadded:: directive in the docstring and documented in doc/users/next_whats_new/
  • API changes are marked with a .. versionchanged:: directive in the docstring and documented in doc/api/next_api_changes/
  • Release notes conform with instructions in next_whats_new/README.rst or next_api_changes/README.rst

@anntzer
anntzer force-pushed the le branch 2 times, most recently from b9fc4e5 to 6b7e181 Compare January 27, 2023 22:00
Keeping around lastevent can delay garbage collection of a torn-down
axes, and can also keep around an actual GUI event object (guiEvent)
associated with a long-torn down widget, which can be problematic for
some GUI toolkits.

Instead, only keep track of the last inaxes attribute.

Unfortunately there are no tests for axes_enter_event/axes_leave_event,
but this can be manually tested by running the
event_handling/figure_axes_enter_leave.py example.
@ksunden ksunden added this to the v3.8.0 milestone Feb 8, 2023
@ksunden
ksunden merged commit 2b938cd into matplotlib:main Feb 8, 2023
@anntzer
anntzer deleted the le branch February 8, 2023 06:55
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3 participants