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Fix hatch linewidth in PGF #24263

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Fix hatch linewidth in PGF #24263

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3c83748
Fix hatch linewidth in PGF
oscargus Oct 24, 2022
6b8c2fd
Try restoring linewidth
oscargus Nov 6, 2022
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9 changes: 9 additions & 0 deletions lib/matplotlib/backends/backend_pgf.py
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Original file line number Diff line number Diff line change
Expand Up @@ -453,8 +453,17 @@ def draw_path(self, gc, path, transform, rgbFace=None):
r"{\pgfqpoint{0in}{0in}}{\pgfqpoint{1in}{1in}}")
_writeln(self.fh, r"\pgfusepath{clip}")
scale = mpl.transforms.Affine2D().scale(self.dpi)
# Store default PGF line width
_writeln(self.fh, r"\newlength{\defaultpgflinewidth}")
_writeln(self.fh,
r"\setlength{\defaultpgflinewidth}{\pgflinewidth}")
lw = (mpl.rcParams["hatch.linewidth"]
* mpl_pt_to_in * latex_in_to_pt)
_writeln(self.fh, r"\pgfsetlinewidth{%fpt}" % lw)
self._print_pgf_path(None, gc.get_hatch_path(), scale)
self._pgf_path_draw(stroke=True)
# Restore default PGF line width
_writeln(self.fh, r"\pgfsetlinewidth{\defaultpgflinewidth}")
_writeln(self.fh, r"\end{pgfscope}")
_writeln(self.fh, r"}")
# repeat pattern, filling the bounding rect of the path
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Binary file added lib/matplotlib/tests/baseline_images/test_backend_pgf/hatch_linewidth.pdf
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14 changes: 12 additions & 2 deletions lib/matplotlib/tests/test_backend_pgf.py
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Expand Up @@ -10,9 +10,9 @@
import matplotlib as mpl
import matplotlib.pyplot as plt
from matplotlib.testing import _has_tex_package, _check_for_pgf
from matplotlib.testing.exceptions import ImageComparisonFailure
from matplotlib.testing.compare import compare_images
from matplotlib.backends.backend_pgf import PdfPages
from matplotlib.testing.exceptions import ImageComparisonFailure
from matplotlib.backends.backend_pgf import FigureCanvasPgf, PdfPages
from matplotlib.testing.decorators import (
_image_directories, check_figures_equal, image_comparison)
from matplotlib.testing._markers import (
Expand Down Expand Up @@ -400,3 +400,13 @@ def test_document_font_size():
label=r'\normalsize the document font size is \the\fontdimen6\font'
)
plt.legend()


@needs_pgf_xelatex
@pytest.mark.backend('pgf')
@image_comparison(['hatch_linewidth'], extensions=['pdf'])
def test_pgf_hatch_linewidth():
mpl.backend_bases.register_backend('pdf', FigureCanvasPgf)
mpl.rcParams['hatch.linewidth'] = 0.1

plt.bar(1, 1, color='white', edgecolor='black', hatch='/')
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