@@ -42,8 +42,10 @@ def _get_documentclass():
4242else :
4343return _DOCUMENTCLASS
4444
45- def _get_preamble ():
45+ def _get_preamble (commands = None ):
4646"""Prepare a LaTeX preamble based on the rcParams configuration."""
47+ if commands is None :
48+ commands = []
4749font_size_pt = FontProperties (
4850size = mpl .rcParams ["font.size" ]
4951 ).get_size_in_points ()
@@ -68,6 +70,7 @@ def _get_preamble():
6870for family in ["serif" ,"sans\\ -serif" ,"monospace" ]]
6971 )
7072 ]+ [r"\fi" ]if mpl .rcParams ["pgf.rcfonts" ]else []),
73+ * commands ,
7174# Documented as "must come last".
7275mpl .texmanager ._usepackage_if_not_loaded ("underscore" ,option = "strings" ),
7376 ])
@@ -201,12 +204,13 @@ class LatexManager:
201204@staticmethod
202205def _build_latex_header ():
203206latex_header = [
204- _get_preamble (),
205- # Include TeX program name as a comment for cache invalidation.
206- # TeX does not allow this to be the first line.
207- rf"% !TeX program ={ mpl .rcParams ['pgf.texsystem' ]} ,
208- # Test whether \includegraphics supports interpolate option.
209- r"\usepackage{graphicx}" ,
207+ _get_preamble (commands = [
208+ # Include TeX program name as a comment for cache invalidation.
209+ # TeX does not allow this to be the first line.
210+ rf"% !TeX program ={ mpl .rcParams ['pgf.texsystem' ]} ,
211+ # Test whether \includegraphics supports interpolate option.
212+ r"\usepackage{graphicx}" ,
213+ ]),
210214r"\begin{document}" ,
211215r"\typeout{pgf_backend_query_start}" ,
212216 ]
@@ -832,11 +836,12 @@ def print_pdf(self, fname_or_fh, *, metadata=None, **kwargs):
832836"\n " .join ([
833837r"\PassOptionsToPackage{pdfinfo={%s}}{hyperref}" % pdfinfo ,
834838r"\PassOptionsToPackage{%s}{geometry}" % geometry_options ,
835- _get_preamble (),
836- r"\usepackage{hyperref}" ,
837- r"\usepackage{geometry}" ,
838- r"\geometry{reset, %s}" % geometry_options ,
839- r"\usepackage{pgf}" ,
839+ _get_preamble (inserted_lines = [
840+ r"\usepackage{hyperref}" ,
841+ r"\usepackage{geometry}" ,
842+ r"\geometry{reset, %s}" % geometry_options ,
843+ r"\usepackage{pgf}" ,
844+ ]),
840845r"\begin{document}" ,
841846r"\centering" ,
842847r"\input{figure.pgf}" ,
@@ -945,11 +950,12 @@ def _write_header(self, width_inches, height_inches):
945950latex_header = "\n " .join ([
946951r"\PassOptionsToPackage{pdfinfo={%s}}{hyperref}" % pdfinfo ,
947952r"\PassOptionsToPackage{%s}{geometry}" % geometry_options ,
948- _get_preamble (),
949- r"\usepackage{hyperref}" ,
950- r"\usepackage{geometry}" ,
951- r"\geometry{reset, %s}" % geometry_options ,
952- r"\usepackage{pgf}" ,
953+ _get_preamble (inserted_lines = [
954+ r"\usepackage{hyperref}" ,
955+ r"\usepackage{geometry}" ,
956+ r"\geometry{reset, %s}" % geometry_options ,
957+ r"\usepackage{pgf}" ,
958+ ]),
953959r"\setlength{\parindent}{0pt}" ,
954960r"\begin{document}%" ,
955961 ])