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Remove font warning when legend is added while using Tex #17521

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Merged
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Sep 20, 2020
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Remove font warning when legend is added while using Tex #17521

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5037eef
Fix warning when legend is added while using TeX.
Struan-Murray May 27, 2020
bb0786b
Add test that legend doesn't warn with TeX enabled.
QuLogic Aug 27, 2020
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3 changes: 2 additions & 1 deletion lib/matplotlib/offsetbox.py
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Original file line number Diff line number Diff line change
Expand Up @@ -881,7 +881,8 @@ def get_window_extent(self, renderer):

def get_extent(self, renderer):
_, h_, d_ = renderer.get_text_width_height_descent(
"lp", self._text._fontproperties, ismath=False)
"lp", self._text._fontproperties,
ismath="TeX" if self._text.get_usetex() else False)

bbox, info, d = self._text._get_layout(renderer)
w, h = bbox.width, bbox.height
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16 changes: 16 additions & 0 deletions lib/matplotlib/tests/test_legend.py
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Expand Up @@ -637,6 +637,22 @@ def test_alpha_handles():
assert lh.get_edgecolor()[:-1] == hh[1].get_edgecolor()[:-1]


@pytest.mark.skipif(
not mpl.checkdep_usetex(True),
reason="This test needs a TeX installation")
def test_usetex_no_warn(caplog):
mpl.rcParams['font.family'] = 'serif'
mpl.rcParams['font.serif'] = 'Computer Modern'
mpl.rcParams['text.usetex'] = True

fig, ax = plt.subplots()
ax.plot(0, 0, label='input')
ax.legend(title="My legend")

fig.canvas.draw()
assert "Font family ['serif'] not found." not in caplog.text


def test_warn_big_data_best_loc():
fig, ax = plt.subplots()
fig.canvas.draw() # So that we can call draw_artist later.
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