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Deprecate the unneeded Fonts.destroy. #18003

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Merged
merged 1 commit into from
Jul 21, 2020
Merged

Deprecate the unneeded Fonts.destroy. #18003

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3 changes: 3 additions & 0 deletions doc/api/next_api_changes/deprecations/18003-AL.rst
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Original file line number Diff line number Diff line change
@@ -0,0 +1,3 @@
mathtext.Fonts.destroy
~~~~~~~~~~~~~~~~~~~~~~
... is deprecated, because Fonts do not create reference loops anyways.
8 changes: 7 additions & 1 deletion lib/matplotlib/mathtext.py
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Original file line number Diff line number Diff line change
Expand Up @@ -398,6 +398,7 @@ def __init__(self, default_font_prop, mathtext_backend):
self.mathtext_backend = mathtext_backend
self.used_characters = {}

@cbook.deprecated("3.4")
def destroy(self):
"""
Fix any cyclical references before the object is about
Expand Down Expand Up @@ -519,7 +520,11 @@ def get_results(self, box):
"""
result = self.mathtext_backend.get_results(
box, self.get_used_characters())
self.destroy()
if self.destroy != TruetypeFonts.destroy.__get__(self):
destroy = cbook._deprecate_method_override(
__class__.destroy, self, since="3.4")
if destroy:
destroy()
return result

def get_sized_alternatives_for_symbol(self, fontname, sym):
Expand Down Expand Up @@ -547,6 +552,7 @@ def __init__(self, default_font_prop, mathtext_backend):
self._fonts['default'] = default_font
self._fonts['regular'] = default_font

@cbook.deprecated("3.4")
def destroy(self):
self.glyphd = None
Fonts.destroy(self)
Expand Down