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Improve font weight guessing. #14483

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Merged
merged 1 commit into from
Jun 8, 2019
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anntzer
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@anntzer anntzer commented Jun 7, 2019

Previously, we would guess that "Times New Roman Bold" is a regular
weight font because its name contains the substring "Roman", even though
the font correctly sets the BOLD flag (FT_STYLE_FLAG_BOLD). Invert the
logic to give priority to the flag, as its presence is clearly more
robust than a substring check.

s.find(w) >= 0 is just an obfuscated way to write w in s, so change
that.

Obviously font properties extraction could be improved in a lot of ways, but this should close #5574.

PR Summary

PR Checklist

  • Has Pytest style unit tests
  • Code is Flake 8 compliant
  • New features are documented, with examples if plot related
  • Documentation is sphinx and numpydoc compliant
  • Added an entry to doc/users/next_whats_new/ if major new feature (follow instructions in README.rst there)
  • Documented in doc/api/api_changes.rst if API changed in a backward-incompatible way

@dstansby
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dstansby commented Jun 7, 2019

Should probably get a short API change note.

Previously, we would guess that "Times New Roman Bold" is a regular
weight font because its name contains the substring "Roman", even though
the font correctly sets the BOLD flag (FT_STYLE_FLAG_BOLD).  Invert the
logic to give priority to the flag, as its presence is clearly more
robust than a substring check.

`s.find(w) >= 0` is just an obfuscated way to write `w in s`, so change
that.
@anntzer
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anntzer commented Jun 7, 2019

sure, done

@dstansby dstansby added this to the v3.2.0 milestone Jun 7, 2019
@QuLogic QuLogic merged commit 0e53685 into matplotlib:master Jun 8, 2019
@anntzer anntzer deleted the timesnewroman branch June 8, 2019 08:56
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Incorrect selection of Times New Roman Bold
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