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Commit6c7b9d0

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Fix kerning of mathtext
The `FontInfo.num` value returned by `TruetypeFonts._get_info` is acharacter code, but `FT2Font.get_kerning` takes *glyph indices*, meaningthat kerning was likely off in most cases.
1 parent00e3834 commit6c7b9d0

21 files changed

+3032
-2769
lines changed

‎lib/matplotlib/_mathtext.py

Lines changed: 3 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -423,7 +423,9 @@ def get_kern(self, font1: str, fontclass1: str, sym1: str, fontsize1: float,
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info1=self._get_info(font1,fontclass1,sym1,fontsize1,dpi)
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info2=self._get_info(font2,fontclass2,sym2,fontsize2,dpi)
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font=info1.font
426-
returnfont.get_kerning(info1.num,info2.num,Kerning.DEFAULT)/64
426+
returnfont.get_kerning(font.get_char_index(info1.num),
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font.get_char_index(info2.num),
428+
Kerning.DEFAULT)/64
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returnsuper().get_kern(font1,fontclass1,sym1,fontsize1,
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font2,fontclass2,sym2,fontsize2,dpi)
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