fix: fallback warnings

andrzejnovak · andrzejnovak · commit b7a320960b4e · 2020-02-20T09:50:23.000+01:00
diff --git a/lib/matplotlib/mathtext.py b/lib/matplotlib/mathtext.py
@@ -660,6 +660,7 @@ class BakomaFonts(TruetypeFonts):
 
     def __init__(self, *args, **kwargs):
         self._stix_fallback = StixFonts(*args, **kwargs)
+        self.name = "Computer Modern"
 
         TruetypeFonts.__init__(self, *args, **kwargs)
         self.fontmap = {}
@@ -769,18 +770,19 @@ class UnicodeFonts(TruetypeFonts):
 
     def __init__(self, *args, **kwargs):
         # This must come first so the backend's owner is set correctly
-        _fallback_rc = rcParams['mathtext.fallback']
+        fallback_rc = rcParams['mathtext.fallback']
         if rcParams['mathtext.fallback_to_cm'] is not None:
             if rcParams['mathtext.fallback_to_cm']:
-                _fallback_rc = 'cm'
+                fallback_rc = 'cm'
             else:
-                _fallback_rc = None
+                fallback_rc = None
 
-        if _fallback_rc == 'stix':
+        
+        if fallback_rc == 'stix':
             self.cm_fallback = StixFonts(*args, **kwargs)
-        elif _fallback_rc == 'stixsans':
+        elif fallback_rc == 'stixsans':
             self.cm_fallback = StixSansFonts(*args, **kwargs)
-        elif _fallback_rc == 'cm':
+        elif fallback_rc == 'cm':
             self.cm_fallback = BakomaFonts(*args, **kwargs)
         else:
             self.cm_fallback = None
@@ -856,13 +858,9 @@ def _get_glyph(self, fontname, font_class, sym, fontsize, math=True):
 
         if not found_symbol:
             if self.cm_fallback:
-                if type(self.cm_fallback) is BakomaFonts:
-                    _log.warning("Substituting with a symbol from Computer "
-                                 "Modern.")
-                elif type(self.cm_fallback) is StixFonts:
-                    _log.warning("Substituting with a symbol from STIX.")
-                elif type(self.cm_fallback) is StixSansFonts:
-                    _log.warning("Substituting with a symbol from STIX Sans.")
+                _log.warning("Substituting with a symbol from {}".format( 
+                             self.cm_fallback.name))
+                                 
                 if (fontname in ('it', 'regular')
                         and isinstance(self.cm_fallback, StixFonts)):
                     fontname = 'rm'
@@ -1004,6 +1002,7 @@ class StixFonts(UnicodeFonts):
     def __init__(self, *args, **kwargs):
         TruetypeFonts.__init__(self, *args, **kwargs)
         self.fontmap = {}
+        self.name = "STIX"
         for key, name in self._fontmap.items():
             fullpath = findfont(name)
             self.fontmap[key] = fullpath
@@ -1080,6 +1079,9 @@ class StixSansFonts(StixFonts):
     A font handling class for the STIX fonts (that uses sans-serif
     characters by default).
     """
+    def __init__(self, *args, **kwargs):
+        StixFonts.__init__(self, *args, **kwargs)
+        self.name = "STIXSans"
     _sans = True
 
 
