/usr/lib/python2.7/dist-packages/matplotlib/tests/test_text.py is in python-matplotlib 1.4.2-3.1.
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unicode_literals)
import six
import numpy as np
import matplotlib
from matplotlib.testing.decorators import image_comparison, knownfailureif, cleanup
import matplotlib.pyplot as plt
import warnings
from nose.tools import with_setup
@image_comparison(baseline_images=['font_styles'])
def test_font_styles():
from matplotlib import _get_data_path
data_path = _get_data_path()
def find_matplotlib_font(**kw):
prop = FontProperties(**kw)
path = findfont(prop, directory=data_path)
return FontProperties(fname=path)
from matplotlib.font_manager import FontProperties, findfont
warnings.filterwarnings('ignore', ('findfont: Font family \[u?\'Foo\'\] '+
'not found. Falling back to .'),
UserWarning,
module='matplotlib.font_manager')
fig = plt.figure()
ax = plt.subplot(1, 1, 1)
normalFont = find_matplotlib_font(family="sans-serif",
style="normal",
variant="normal",
size=14,
)
ax.annotate("Normal Font", (0.1, 0.1), xycoords='axes fraction',
fontproperties=normalFont)
boldFont = find_matplotlib_font(family="Foo",
style="normal",
variant="normal",
weight="bold",
stretch=500,
size=14,
)
ax.annotate("Bold Font", (0.1, 0.2), xycoords='axes fraction',
fontproperties=boldFont)
boldItemFont = find_matplotlib_font(family="sans serif",
style="italic",
variant="normal",
weight=750,
stretch=500,
size=14,
)
ax.annotate("Bold Italic Font", (0.1, 0.3), xycoords='axes fraction',
fontproperties=boldItemFont)
lightFont = find_matplotlib_font(family="sans-serif",
style="normal",
variant="normal",
weight=200,
stretch=500,
size=14,
)
ax.annotate("Light Font", (0.1, 0.4), xycoords='axes fraction',
fontproperties=lightFont)
condensedFont = find_matplotlib_font(family="sans-serif",
style="normal",
variant="normal",
weight=500,
stretch=100,
size=14,
)
ax.annotate("Condensed Font", (0.1, 0.5), xycoords='axes fraction',
fontproperties=condensedFont)
ax.set_xticks([])
ax.set_yticks([])
@image_comparison(baseline_images=['multiline'])
def test_multiline():
fig = plt.figure()
ax = plt.subplot(1, 1, 1)
ax.set_title("multiline\ntext alignment")
plt.text(0.2, 0.5, "TpTpTp\n$M$\nTpTpTp", size=20,
ha="center", va="top")
plt.text(0.5, 0.5, "TpTpTp\n$M^{M^{M^{M}}}$\nTpTpTp", size=20,
ha="center", va="top")
plt.text(0.8, 0.5, "TpTpTp\n$M_{q_{q_{q}}}$\nTpTpTp", size=20,
ha="center", va="top")
plt.xlim(0, 1)
plt.ylim(0, 0.8)
ax.set_xticks([])
ax.set_yticks([])
@image_comparison(baseline_images=['antialiased'], extensions=['png'])
def test_antialiasing():
matplotlib.rcParams['text.antialiased'] = True
fig = plt.figure(figsize=(5.25, 0.75))
fig.text(0.5, 0.75, "antialiased", horizontalalignment='center',
verticalalignment='center')
fig.text(0.5, 0.25, "$\sqrt{x}$", horizontalalignment='center',
verticalalignment='center')
# NOTE: We don't need to restore the rcParams here, because the
# test cleanup will do it for us. In fact, if we do it here, it
# will turn antialiasing back off before the images are actually
# rendered.
def test_afm_kerning():
from matplotlib.afm import AFM
from matplotlib.font_manager import findfont
fn = findfont("Helvetica", fontext="afm")
with open(fn, 'rb') as fh:
afm = AFM(fh)
assert afm.string_width_height('VAVAVAVAVAVA') == (7174.0, 718)
@image_comparison(baseline_images=['text_contains'], extensions=['png'])
def test_contains():
import matplotlib.backend_bases as mbackend
fig = plt.figure()
ax = plt.axes()
mevent = mbackend.MouseEvent('button_press_event', fig.canvas, 0.5,
0.5, 1, None)
xs = np.linspace(0.25, 0.75, 30)
ys = np.linspace(0.25, 0.75, 30)
xs, ys = np.meshgrid(xs, ys)
txt = plt.text(0.48, 0.52, 'hello world', ha='center', fontsize=30,
rotation=30)
# uncomment to draw the text's bounding box
# txt.set_bbox(dict(edgecolor='black', facecolor='none'))
# draw the text. This is important, as the contains method can only work
# when a renderer exists.
plt.draw()
for x, y in zip(xs.flat, ys.flat):
mevent.x, mevent.y = plt.gca().transAxes.transform_point([x, y])
contains, _ = txt.contains(mevent)
color = 'yellow' if contains else 'red'
# capture the viewLim, plot a point, and reset the viewLim
vl = ax.viewLim.frozen()
ax.plot(x, y, 'o', color=color)
ax.viewLim.set(vl)
@image_comparison(baseline_images=['titles'])
def test_titles():
# left and right side titles
fig = plt.figure()
ax = plt.subplot(1, 1, 1)
ax.set_title("left title", loc="left")
ax.set_title("right title", loc="right")
ax.set_xticks([])
ax.set_yticks([])
@image_comparison(baseline_images=['text_alignment'])
def test_alignment():
fig = plt.figure()
ax = plt.subplot(1, 1, 1)
x = 0.1
for rotation in (0, 30):
for alignment in ('top', 'bottom', 'baseline', 'center'):
ax.text(x, 0.5, alignment + " Tj", va=alignment, rotation=rotation,
bbox=dict(boxstyle='round', facecolor='wheat', alpha=0.5))
ax.text(x, 1.0, r'$\sum_{i=0}^{j}$', va=alignment, rotation=rotation)
x += 0.1
ax.plot([0, 1], [0.5, 0.5])
ax.plot([0, 1], [1.0, 1.0])
ax.set_xlim([0, 1])
ax.set_ylim([0, 1.5])
ax.set_xticks([])
ax.set_yticks([])
@image_comparison(baseline_images=['axes_titles'], extensions=['png'])
def test_axes_titles():
# Related to issue #3327
fig = plt.figure()
ax = plt.subplot(1,1,1)
ax.set_title('center', loc='center', fontsize=20, fontweight=700)
ax.set_title('left', loc='left', fontsize=12, fontweight=400)
ax.set_title('right', loc='right', fontsize=12, fontweight=400)
@cleanup
def test_set_position():
fig, ax = plt.subplots()
# test set_position
ann = ax.annotate('test', (0, 0), xytext=(0, 0), textcoords='figure pixels')
plt.draw()
init_pos = ann.get_window_extent(fig.canvas.renderer)
shift_val = 15
ann.set_position((shift_val, shift_val))
plt.draw()
post_pos = ann.get_window_extent(fig.canvas.renderer)
for a, b in zip(init_pos.min, post_pos.min):
assert a + shift_val == b
# test xyann
ann = ax.annotate('test', (0, 0), xytext=(0, 0), textcoords='figure pixels')
plt.draw()
init_pos = ann.get_window_extent(fig.canvas.renderer)
shift_val = 15
ann.xyann = (shift_val, shift_val)
plt.draw()
post_pos = ann.get_window_extent(fig.canvas.renderer)
for a, b in zip(init_pos.min, post_pos.min):
assert a + shift_val == b
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