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Add text.parse_math rcParams #22556

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Merged
merged 1 commit into from
Mar 29, 2022
+20 −2
Merged

Add text.parse_math rcParams #22556

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2 changes: 2 additions & 0 deletions lib/matplotlib/mpl-data/matplotlibrc
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Original file line number Diff line number Diff line change
Expand Up @@ -301,6 +301,8 @@
# Values other than 0 or 6 have no defined meaning.
#text.antialiased: True # If True (default), the text will be antialiased.
# This only affects raster outputs.
#text.parse_math: True # Use mathtext if there is an even number of unescaped
# dollar signs.


## ***************************************************************************
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1 change: 1 addition & 0 deletions lib/matplotlib/rcsetup.py
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Expand Up @@ -932,6 +932,7 @@ def _convert_validator_spec(key, conv):
"text.hinting_factor": validate_int,
"text.kerning_factor": validate_int,
"text.antialiased": validate_bool,
"text.parse_math": validate_bool,

"mathtext.cal": validate_font_properties,
"mathtext.rm": validate_font_properties,
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14 changes: 14 additions & 0 deletions lib/matplotlib/tests/test_text.py
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Expand Up @@ -755,6 +755,20 @@ def test_parse_math():
fig.canvas.draw()


def test_parse_math_rcparams():
# Default is True
fig, ax = plt.subplots()
ax.text(0, 0, r"$ \wrong{math} $")
with pytest.raises(ValueError, match='Unknown symbol'):
fig.canvas.draw()

# Setting rcParams to False
with mpl.rc_context({'text.parse_math': False}):
fig, ax = plt.subplots()
ax.text(0, 0, r"$ \wrong{math} $")
fig.canvas.draw()


@image_comparison(['text_pdf_font42_kerning.pdf'], style='mpl20')
def test_pdf_font42_kerning():
plt.rcParams['pdf.fonttype'] = 42
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5 changes: 3 additions & 2 deletions lib/matplotlib/text.py
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Expand Up @@ -142,7 +142,7 @@ def __init__(self,
wrap=False,
transform_rotates_text=False,
*,
parse_math=True,
parse_math=None, # defaults to rcParams['text.parse_math']
**kwargs
):
"""
Expand All @@ -163,7 +163,8 @@ def __init__(self,
color if color is not None else mpl.rcParams["text.color"])
self.set_fontproperties(fontproperties)
self.set_usetex(usetex)
self.set_parse_math(parse_math)
self.set_parse_math(parse_math if parse_math is not None else
mpl.rcParams['text.parse_math'])
self.set_wrap(wrap)
self.set_verticalalignment(verticalalignment)
self.set_horizontalalignment(horizontalalignment)
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