Deprecate backend_pgf.get_texcommand.

anntzer · anntzer · commit a0313ecf8a6d · 2018-02-26T12:13:29.000-08:00
The rcparam system already handles validation.
diff --git a/lib/matplotlib/backends/backend_pgf.py b/lib/matplotlib/backends/backend_pgf.py
@@ -17,7 +17,7 @@
 import weakref
 
 import matplotlib as mpl
-from matplotlib import _png, font_manager as fm, rcParams
+from matplotlib import _png, cbook, font_manager as fm, rcParams
 from matplotlib.backend_bases import (
     _Backend, FigureCanvasBase, FigureManagerBase, GraphicsContextBase,
     RendererBase)
@@ -29,6 +29,7 @@
 ###############################################################################
 
 
+@cbook.deprecated
 def get_texcommand():
     """Get chosen TeX system from rc."""
     texsystem_options = ["xelatex", "lualatex", "pdflatex"]
@@ -39,7 +40,7 @@ def get_texcommand():
 def get_fontspec():
     """Build fontspec preamble from rc."""
     latex_fontspec = []
-    texcommand = get_texcommand()
+    texcommand = rcParams["pgf.texsystem"]
 
     if texcommand != "pdflatex":
         latex_fontspec.append("\\usepackage{fontspec}")
@@ -125,7 +126,7 @@ def _font_properties_str(prop):
     family = prop.get_family()[0]
     if family in families:
         commands.append(families[family])
-    elif family in system_fonts and get_texcommand() != "pdflatex":
+    elif family in system_fonts and rcParams["pgf.texsystem"] != "pdflatex":
         commands.append(r"\setmainfont{%s}\rmfamily" % family)
     else:
         pass  # print warning?
@@ -195,7 +196,7 @@ class LatexManagerFactory(object):
 
     @staticmethod
     def get_latex_manager():
-        texcommand = get_texcommand()
+        texcommand = rcParams["pgf.texsystem"]
         latex_header = LatexManager._build_latex_header()
         prev = LatexManagerFactory.previous_instance
 
@@ -273,7 +274,7 @@ def __init__(self):
         LatexManager._unclean_instances.add(self)
 
         # test the LaTeX setup to ensure a clean startup of the subprocess
-        self.texcommand = get_texcommand()
+        self.texcommand = rcParams["pgf.texsystem"]
         self.latex_header = LatexManager._build_latex_header()
         latex_end = "\n\\makeatletter\n\\@@end\n"
         try:
@@ -877,7 +878,7 @@ def _print_pdf_to_fh(self, fh, *args, **kwargs):
             with codecs.open(fname_tex, "w", "utf-8") as fh_tex:
                 fh_tex.write(latexcode)
 
-            texcommand = get_texcommand()
+            texcommand = rcParams["pgf.texsystem"]
             cmdargs = [str(texcommand), "-interaction=nonstopmode",
                        "-halt-on-error", "figure.tex"]
             try:
