PR Summary

Adding on to the changes from the original PDF PR:#20804, this PR modifies the layout of PS backend to allow embedding multiple fonts.

Currently, Type3 multi-font embedding works fine,however, Type42 fails to display the glyphs from other font,even after the font is embedded (and subsetted).

UPDATE: Using a different font seems to output a good Type42 embedding.

Type3_converted_from_ps.pdf
Type42_converted_from_ps.pdf

^^ Type 3

importmatplotlib.pyplotaspltFONTTYPE=42# or 3plt.rcParams['font.family']= ['Authentic','SimHei']plt.rcParams['ps.fonttype']=FONTTYPEplt.rcParams['font.size']=30plt.figtext(0.18,0.45,"There are 多个汉字 in between!")plt.savefig(f"type{FONTTYPE}_fallback.ps")

PR Checklist

• Has pytest style unit tests (andpytest passes).
• IsFlake 8 compliant (runflake8 on changed files to check).
• New features are documented, with examples if plot related.
• Documentation is sphinx and numpydoc compliant (the docs shouldbuild without error).
• Conforms to Matplotlib style conventions (installflake8-docstrings and runflake8 --docstring-convention=all).
• New features have an entry indoc/users/next_whats_new/ (follow instructions in README.rst there).
• API changes documented indoc/api/next_api_changes/ (follow instructions in README.rst there).