fr/fr_env/lib/python3.8/site-packages/matplotlib/tests/test_patheffects.py

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2021-02-17 12:26:31 +05:30
import numpy as np
from matplotlib.testing.decorators import image_comparison
import matplotlib.pyplot as plt
import matplotlib.patheffects as path_effects
@image_comparison(['patheffect1'], remove_text=True)
def test_patheffect1():
ax1 = plt.subplot(111)
ax1.imshow([[1, 2], [2, 3]])
txt = ax1.annotate("test", (1., 1.), (0., 0),
arrowprops=dict(arrowstyle="->",
connectionstyle="angle3", lw=2),
size=20, ha="center",
path_effects=[path_effects.withStroke(linewidth=3,
foreground="w")])
txt.arrow_patch.set_path_effects([path_effects.Stroke(linewidth=5,
foreground="w"),
path_effects.Normal()])
pe = [path_effects.withStroke(linewidth=3, foreground="w")]
ax1.grid(True, linestyle="-", path_effects=pe)
@image_comparison(['patheffect2'], remove_text=True, style='mpl20')
def test_patheffect2():
ax2 = plt.subplot(111)
arr = np.arange(25).reshape((5, 5))
ax2.imshow(arr, interpolation='nearest')
cntr = ax2.contour(arr, colors="k")
plt.setp(cntr.collections,
path_effects=[path_effects.withStroke(linewidth=3,
foreground="w")])
clbls = ax2.clabel(cntr, fmt="%2.0f", use_clabeltext=True)
plt.setp(clbls,
path_effects=[path_effects.withStroke(linewidth=3,
foreground="w")])
@image_comparison(['patheffect3'])
def test_patheffect3():
p1, = plt.plot([1, 3, 5, 4, 3], 'o-b', lw=4)
p1.set_path_effects([path_effects.SimpleLineShadow(),
path_effects.Normal()])
plt.title(
r'testing$^{123}$',
path_effects=[path_effects.withStroke(linewidth=1, foreground="r")])
leg = plt.legend([p1], [r'Line 1$^2$'], fancybox=True, loc='upper left')
leg.legendPatch.set_path_effects([path_effects.withSimplePatchShadow()])
text = plt.text(2, 3, 'Drop test', color='white',
bbox={'boxstyle': 'circle,pad=0.1', 'color': 'red'})
pe = [path_effects.Stroke(linewidth=3.75, foreground='k'),
path_effects.withSimplePatchShadow((6, -3), shadow_rgbFace='blue')]
text.set_path_effects(pe)
text.get_bbox_patch().set_path_effects(pe)
pe = [path_effects.PathPatchEffect(offset=(4, -4), hatch='xxxx',
facecolor='gray'),
path_effects.PathPatchEffect(edgecolor='white', facecolor='black',
lw=1.1)]
t = plt.gcf().text(0.02, 0.1, 'Hatch shadow', fontsize=75, weight=1000,
va='center')
t.set_path_effects(pe)
@image_comparison(['stroked_text.png'])
def test_patheffects_stroked_text():
text_chunks = [
'A B C D E F G H I J K L',
'M N O P Q R S T U V W',
'X Y Z a b c d e f g h i j',
'k l m n o p q r s t u v',
'w x y z 0123456789',
r"!@#$%^&*()-=_+[]\;'",
',./{}|:"<>?'
]
font_size = 50
ax = plt.axes([0, 0, 1, 1])
for i, chunk in enumerate(text_chunks):
text = ax.text(x=0.01, y=(0.9 - i * 0.13), s=chunk,
fontdict={'ha': 'left', 'va': 'center',
'size': font_size, 'color': 'white'})
text.set_path_effects([path_effects.Stroke(linewidth=font_size / 10,
foreground='black'),
path_effects.Normal()])
ax.set_xlim(0, 1)
ax.set_ylim(0, 1)
ax.axis('off')
def test_PathEffect_points_to_pixels():
fig = plt.figure(dpi=150)
p1, = plt.plot(range(10))
p1.set_path_effects([path_effects.SimpleLineShadow(),
path_effects.Normal()])
renderer = fig.canvas.get_renderer()
pe_renderer = path_effects.PathEffectRenderer(
p1.get_path_effects(), renderer)
# Confirm that using a path effects renderer maintains point sizes
# appropriately. Otherwise rendered font would be the wrong size.
assert renderer.points_to_pixels(15) == pe_renderer.points_to_pixels(15)
def test_SimplePatchShadow_offset():
pe = path_effects.SimplePatchShadow(offset=(4, 5))
assert pe._offset == (4, 5)
@image_comparison(['collection'], tol=0.03, style='mpl20')
def test_collection():
x, y = np.meshgrid(np.linspace(0, 10, 150), np.linspace(-5, 5, 100))
data = np.sin(x) + np.cos(y)
cs = plt.contour(data)
pe = [path_effects.PathPatchEffect(edgecolor='black', facecolor='none',
linewidth=12),
path_effects.Stroke(linewidth=5)]
for collection in cs.collections:
collection.set_path_effects(pe)
for text in plt.clabel(cs, colors='white'):
text.set_path_effects([path_effects.withStroke(foreground='k',
linewidth=3)])
text.set_bbox({'boxstyle': 'sawtooth', 'facecolor': 'none',
'edgecolor': 'blue'})