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Correctly read the 'style' argument while processing 'genfrac'. by tfpf · Pull Request #23034 · matplotlib/matplotlib · GitHub

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Correctly read the 'style' argument while processing 'genfrac'. #23034

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Merged
oscargus merged 7 commits into from
Jun 16, 2022
Conversation 17 Commits 7 Checks 0 Files changed
Merged

Correctly read the 'style' argument while processing 'genfrac'. #23034

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ab331b0
Correctly read the 'style' argument while processing 'genfrac'.
tfpf May 11, 2022
825aa6c
Default to text style if style not specified.
tfpf May 11, 2022
96f7f9a
Hard-coded enumerations. Support script_stype and script_script_style.
tfpf May 12, 2022
f13788b
Automatically convert style number to enumerated type.
tfpf May 12, 2022
0ad1392
Used double quotes for strings.
tfpf May 12, 2022
2fccd62
Verify that genfrac's displaystyle == dfrac.
tfpf May 21, 2022
ab37e84
Use rcParams instead of rcParamsDefault in the test.
tfpf May 22, 2022
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20 changes: 13 additions & 7 deletions lib/matplotlib/_mathtext.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1634,10 +1634,10 @@ class Parser:
"""

class _MathStyle(enum.Enum):
DISPLAYSTYLE = enum.auto()
TEXTSTYLE = enum.auto()
SCRIPTSTYLE = enum.auto()
SCRIPTSCRIPTSTYLE = enum.auto()
DISPLAYSTYLE = 0
TEXTSTYLE = 1
SCRIPTSTYLE = 2
SCRIPTSCRIPTSTYLE = 3

_binary_operators = set(
'+ * - \N{MINUS SIGN}'
Expand Down Expand Up @@ -1725,6 +1725,9 @@ def set_names_and_parse_actions():
p.float_literal = Regex(r"[-+]?([0-9]+\.?[0-9]*|\.[0-9]+)")
p.space = oneOf(self._space_widths)("space")

p.style_literal = oneOf(
[str(e.value) for e in self._MathStyle])("style_literal")

p.single_symbol = Regex(
r"([a-zA-Z0-9 +\-*/<>=:,.;!\?&'@()\[\]|%s])|(\\[%%${}\[\]_|])" %
"\U00000080-\U0001ffff" # unicode range
Expand Down Expand Up @@ -1799,7 +1802,7 @@ def set_names_and_parse_actions():
"{" + Optional(p.delim)("ldelim") + "}"
+ "{" + Optional(p.delim)("rdelim") + "}"
+ "{" + p.float_literal("rulesize") + "}"
+ p.optional_group("style")
+ "{" + Optional(p.style_literal)("style") + "}"
+ p.required_group("num")
+ p.required_group("den"))

Expand Down Expand Up @@ -2324,7 +2327,7 @@ def _genfrac(self, ldelim, rdelim, rule, style, num, den):
state = self.get_state()
thickness = state.get_current_underline_thickness()

if style is not self._MathStyle.DISPLAYSTYLE:
for _ in range(style.value):
num.shrink()
den.shrink()
cnum = HCentered([num])
Expand Down Expand Up @@ -2358,10 +2361,13 @@ def _genfrac(self, ldelim, rdelim, rule, style, num, den):
return self._auto_sized_delimiter(ldelim, result, rdelim)
return result

def style_literal(self, s, loc, toks):
return self._MathStyle(int(toks["style_literal"]))

def genfrac(self, s, loc, toks):
return self._genfrac(
toks.get("ldelim", ""), toks.get("rdelim", ""),
toks["rulesize"], toks["style"],
toks["rulesize"], toks.get("style", self._MathStyle.TEXTSTYLE),
toks["num"], toks["den"])

def frac(self, s, loc, toks):
Expand Down
10 changes: 10 additions & 0 deletions lib/matplotlib/tests/test_mathtext.py
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Expand Up @@ -367,6 +367,16 @@ def test_inverted_delimiters(fig_test, fig_ref):
fig_ref.text(.5, .5, r"$)($", math_fontfamily="dejavusans")


@check_figures_equal(extensions=["png"])
def test_genfrac_displaystyle(fig_test, fig_ref):
fig_test.text(0.1, 0.1, r"$\dfrac{2x}{3y}$")

thickness = _mathtext.TruetypeFonts.get_underline_thickness(
None, None, fontsize=mpl.rcParams["font.size"],
dpi=mpl.rcParams["savefig.dpi"])
fig_ref.text(0.1, 0.1, r"$\genfrac{}{}{%f}{0}{2x}{3y}$" % thickness)


def test_mathtext_fallback_valid():
for fallback in ['cm', 'stix', 'stixsans', 'None']:
mpl.rcParams['mathtext.fallback'] = fallback
Expand Down
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