324 lines
11 KiB
Python
324 lines
11 KiB
Python
|
from collections import namedtuple
|
||
|
|
import io
|
||
|
|
|
||
|
|
import numpy as np
|
||
|
|
from numpy.testing import assert_allclose
|
||
|
|
import pytest
|
||
|
|
|
||
|
|
from matplotlib.testing.decorators import image_comparison
|
||
|
|
import matplotlib.pyplot as plt
|
||
|
|
import matplotlib.patches as mpatches
|
||
|
|
import matplotlib.lines as mlines
|
||
|
|
from matplotlib.backend_bases import MouseButton
|
||
|
|
|
||
|
|
from matplotlib.offsetbox import (
|
||
|
|
AnchoredOffsetbox, AnnotationBbox, AnchoredText, DrawingArea,
|
||
|
|
OffsetImage, TextArea, _get_packed_offsets)
|
||
|
|
|
||
|
|
|
||
|
|
@image_comparison(['offsetbox_clipping'], remove_text=True)
|
||
|
|
def test_offsetbox_clipping():
|
||
|
|
# - create a plot
|
||
|
|
# - put an AnchoredOffsetbox with a child DrawingArea
|
||
|
|
# at the center of the axes
|
||
|
|
# - give the DrawingArea a gray background
|
||
|
|
# - put a black line across the bounds of the DrawingArea
|
||
|
|
# - see that the black line is clipped to the edges of
|
||
|
|
# the DrawingArea.
|
||
|
|
fig, ax = plt.subplots()
|
||
|
|
size = 100
|
||
|
|
da = DrawingArea(size, size, clip=True)
|
||
|
|
bg = mpatches.Rectangle((0, 0), size, size,
|
||
|
|
facecolor='#CCCCCC',
|
||
|
|
edgecolor='None',
|
||
|
|
linewidth=0)
|
||
|
|
line = mlines.Line2D([-size*.5, size*1.5], [size/2, size/2],
|
||
|
|
color='black',
|
||
|
|
linewidth=10)
|
||
|
|
anchored_box = AnchoredOffsetbox(
|
||
|
|
loc='center',
|
||
|
|
child=da,
|
||
|
|
pad=0.,
|
||
|
|
frameon=False,
|
||
|
|
bbox_to_anchor=(.5, .5),
|
||
|
|
bbox_transform=ax.transAxes,
|
||
|
|
borderpad=0.)
|
||
|
|
|
||
|
|
da.add_artist(bg)
|
||
|
|
da.add_artist(line)
|
||
|
|
ax.add_artist(anchored_box)
|
||
|
|
ax.set_xlim((0, 1))
|
||
|
|
ax.set_ylim((0, 1))
|
||
|
|
|
||
|
|
|
||
|
|
def test_offsetbox_clip_children():
|
||
|
|
# - create a plot
|
||
|
|
# - put an AnchoredOffsetbox with a child DrawingArea
|
||
|
|
# at the center of the axes
|
||
|
|
# - give the DrawingArea a gray background
|
||
|
|
# - put a black line across the bounds of the DrawingArea
|
||
|
|
# - see that the black line is clipped to the edges of
|
||
|
|
# the DrawingArea.
|
||
|
|
fig, ax = plt.subplots()
|
||
|
|
size = 100
|
||
|
|
da = DrawingArea(size, size, clip=True)
|
||
|
|
bg = mpatches.Rectangle((0, 0), size, size,
|
||
|
|
facecolor='#CCCCCC',
|
||
|
|
edgecolor='None',
|
||
|
|
linewidth=0)
|
||
|
|
line = mlines.Line2D([-size*.5, size*1.5], [size/2, size/2],
|
||
|
|
color='black',
|
||
|
|
linewidth=10)
|
||
|
|
anchored_box = AnchoredOffsetbox(
|
||
|
|
loc='center',
|
||
|
|
child=da,
|
||
|
|
pad=0.,
|
||
|
|
frameon=False,
|
||
|
|
bbox_to_anchor=(.5, .5),
|
||
|
|
bbox_transform=ax.transAxes,
|
||
|
|
borderpad=0.)
|
||
|
|
|
||
|
|
da.add_artist(bg)
|
||
|
|
da.add_artist(line)
|
||
|
|
ax.add_artist(anchored_box)
|
||
|
|
|
||
|
|
fig.canvas.draw()
|
||
|
|
assert not fig.stale
|
||
|
|
da.clip_children = True
|
||
|
|
assert fig.stale
|
||
|
|
|
||
|
|
|
||
|
|
def test_offsetbox_loc_codes():
|
||
|
|
# Check that valid string location codes all work with an AnchoredOffsetbox
|
||
|
|
codes = {'upper right': 1,
|
||
|
|
'upper left': 2,
|
||
|
|
'lower left': 3,
|
||
|
|
'lower right': 4,
|
||
|
|
'right': 5,
|
||
|
|
'center left': 6,
|
||
|
|
'center right': 7,
|
||
|
|
'lower center': 8,
|
||
|
|
'upper center': 9,
|
||
|
|
'center': 10,
|
||
|
|
}
|
||
|
|
fig, ax = plt.subplots()
|
||
|
|
da = DrawingArea(100, 100)
|
||
|
|
for code in codes:
|
||
|
|
anchored_box = AnchoredOffsetbox(loc=code, child=da)
|
||
|
|
ax.add_artist(anchored_box)
|
||
|
|
fig.canvas.draw()
|
||
|
|
|
||
|
|
|
||
|
|
def test_expand_with_tight_layout():
|
||
|
|
# Check issue reported in #10476, and updated due to #10784
|
||
|
|
fig, ax = plt.subplots()
|
||
|
|
|
||
|
|
d1 = [1, 2]
|
||
|
|
d2 = [2, 1]
|
||
|
|
ax.plot(d1, label='series 1')
|
||
|
|
ax.plot(d2, label='series 2')
|
||
|
|
ax.legend(ncol=2, mode='expand')
|
||
|
|
|
||
|
|
fig.tight_layout() # where the crash used to happen
|
||
|
|
|
||
|
|
|
||
|
|
@pytest.mark.parametrize('wd_list',
|
||
|
|
([(150, 1)], [(150, 1)]*3, [(0.1, 1)], [(0.1, 1)]*2))
|
||
|
|
@pytest.mark.parametrize('total', (250, 100, 0, -1, None))
|
||
|
|
@pytest.mark.parametrize('sep', (250, 1, 0, -1))
|
||
|
|
@pytest.mark.parametrize('mode', ("expand", "fixed", "equal"))
|
||
|
|
def test_get_packed_offsets(wd_list, total, sep, mode):
|
||
|
|
# Check a (rather arbitrary) set of parameters due to successive similar
|
||
|
|
# issue tickets (at least #10476 and #10784) related to corner cases
|
||
|
|
# triggered inside this function when calling higher-level functions
|
||
|
|
# (e.g. `Axes.legend`).
|
||
|
|
# These are just some additional smoke tests. The output is untested.
|
||
|
|
_get_packed_offsets(wd_list, total, sep, mode=mode)
|
||
|
|
|
||
|
|
|
||
|
|
_Params = namedtuple('_params', 'wd_list, total, sep, expected')
|
||
|
|
|
||
|
|
|
||
|
|
@pytest.mark.parametrize('wd_list, total, sep, expected', [
|
||
|
|
_Params( # total=None
|
||
|
|
[(3, 0), (1, 0), (2, 0)], total=None, sep=1, expected=(8, [0, 4, 6])),
|
||
|
|
_Params( # total larger than required
|
||
|
|
[(3, 0), (1, 0), (2, 0)], total=10, sep=1, expected=(10, [0, 4, 6])),
|
||
|
|
_Params( # total smaller than required
|
||
|
|
[(3, 0), (1, 0), (2, 0)], total=5, sep=1, expected=(5, [0, 4, 6])),
|
||
|
|
])
|
||
|
|
def test_get_packed_offsets_fixed(wd_list, total, sep, expected):
|
||
|
|
result = _get_packed_offsets(wd_list, total, sep, mode='fixed')
|
||
|
|
assert result[0] == expected[0]
|
||
|
|
assert_allclose(result[1], expected[1])
|
||
|
|
|
||
|
|
|
||
|
|
@pytest.mark.parametrize('wd_list, total, sep, expected', [
|
||
|
|
_Params( # total=None (implicit 1)
|
||
|
|
[(.1, 0)] * 3, total=None, sep=None, expected=(1, [0, .45, .9])),
|
||
|
|
_Params( # total larger than sum of widths
|
||
|
|
[(3, 0), (1, 0), (2, 0)], total=10, sep=1, expected=(10, [0, 5, 8])),
|
||
|
|
_Params( # total smaller sum of widths: overlapping boxes
|
||
|
|
[(3, 0), (1, 0), (2, 0)], total=5, sep=1, expected=(5, [0, 2.5, 3])),
|
||
|
|
])
|
||
|
|
def test_get_packed_offsets_expand(wd_list, total, sep, expected):
|
||
|
|
result = _get_packed_offsets(wd_list, total, sep, mode='expand')
|
||
|
|
assert result[0] == expected[0]
|
||
|
|
assert_allclose(result[1], expected[1])
|
||
|
|
|
||
|
|
|
||
|
|
@pytest.mark.parametrize('wd_list, total, sep, expected', [
|
||
|
|
_Params( # total larger than required
|
||
|
|
[(3, 0), (2, 0), (1, 0)], total=6, sep=None, expected=(6, [0, 2, 4])),
|
||
|
|
_Params( # total smaller sum of widths: overlapping boxes
|
||
|
|
[(3, 0), (2, 0), (1, 0), (.5, 0)], total=2, sep=None,
|
||
|
|
expected=(2, [0, 0.5, 1, 1.5])),
|
||
|
|
_Params( # total larger than required
|
||
|
|
[(.5, 0), (1, 0), (.2, 0)], total=None, sep=1,
|
||
|
|
expected=(6, [0, 2, 4])),
|
||
|
|
# the case total=None, sep=None is tested separately below
|
||
|
|
])
|
||
|
|
def test_get_packed_offsets_equal(wd_list, total, sep, expected):
|
||
|
|
result = _get_packed_offsets(wd_list, total, sep, mode='equal')
|
||
|
|
assert result[0] == expected[0]
|
||
|
|
assert_allclose(result[1], expected[1])
|
||
|
|
|
||
|
|
|
||
|
|
def test_get_packed_offsets_equal_total_none_sep_none():
|
||
|
|
with pytest.raises(ValueError):
|
||
|
|
_get_packed_offsets([(1, 0)] * 3, total=None, sep=None, mode='equal')
|
||
|
|
|
||
|
|
|
||
|
|
@pytest.mark.parametrize('child_type', ['draw', 'image', 'text'])
|
||
|
|
@pytest.mark.parametrize('boxcoords',
|
||
|
|
['axes fraction', 'axes pixels', 'axes points',
|
||
|
|
'data'])
|
||
|
|
def test_picking(child_type, boxcoords):
|
||
|
|
# These all take up approximately the same area.
|
||
|
|
if child_type == 'draw':
|
||
|
|
picking_child = DrawingArea(5, 5)
|
||
|
|
picking_child.add_artist(mpatches.Rectangle((0, 0), 5, 5, linewidth=0))
|
||
|
|
elif child_type == 'image':
|
||
|
|
im = np.ones((5, 5))
|
||
|
|
im[2, 2] = 0
|
||
|
|
picking_child = OffsetImage(im)
|
||
|
|
elif child_type == 'text':
|
||
|
|
picking_child = TextArea('\N{Black Square}', textprops={'fontsize': 5})
|
||
|
|
else:
|
||
|
|
assert False, f'Unknown picking child type {child_type}'
|
||
|
|
|
||
|
|
fig, ax = plt.subplots()
|
||
|
|
ab = AnnotationBbox(picking_child, (0.5, 0.5), boxcoords=boxcoords)
|
||
|
|
ab.set_picker(True)
|
||
|
|
ax.add_artist(ab)
|
||
|
|
|
||
|
|
calls = []
|
||
|
|
fig.canvas.mpl_connect('pick_event', lambda event: calls.append(event))
|
||
|
|
|
||
|
|
# Annotation should be picked by an event occurring at its center.
|
||
|
|
if boxcoords == 'axes points':
|
||
|
|
x, y = ax.transAxes.transform_point((0, 0))
|
||
|
|
x += 0.5 * fig.dpi / 72
|
||
|
|
y += 0.5 * fig.dpi / 72
|
||
|
|
elif boxcoords == 'axes pixels':
|
||
|
|
x, y = ax.transAxes.transform_point((0, 0))
|
||
|
|
x += 0.5
|
||
|
|
y += 0.5
|
||
|
|
else:
|
||
|
|
x, y = ax.transAxes.transform_point((0.5, 0.5))
|
||
|
|
fig.canvas.draw()
|
||
|
|
calls.clear()
|
||
|
|
fig.canvas.button_press_event(x, y, MouseButton.LEFT)
|
||
|
|
assert len(calls) == 1 and calls[0].artist == ab
|
||
|
|
|
||
|
|
# Annotation should *not* be picked by an event at its original center
|
||
|
|
# point when the limits have changed enough to hide the *xy* point.
|
||
|
|
ax.set_xlim(-1, 0)
|
||
|
|
ax.set_ylim(-1, 0)
|
||
|
|
fig.canvas.draw()
|
||
|
|
calls.clear()
|
||
|
|
fig.canvas.button_press_event(x, y, MouseButton.LEFT)
|
||
|
|
assert len(calls) == 0
|
||
|
|
|
||
|
|
|
||
|
|
@image_comparison(['anchoredtext_align.png'], remove_text=True, style='mpl20')
|
||
|
|
def test_anchoredtext_horizontal_alignment():
|
||
|
|
fig, ax = plt.subplots()
|
||
|
|
|
||
|
|
text0 = AnchoredText("test\ntest long text", loc="center left",
|
||
|
|
pad=0.2, prop={"ha": "left"})
|
||
|
|
ax.add_artist(text0)
|
||
|
|
text1 = AnchoredText("test\ntest long text", loc="center",
|
||
|
|
pad=0.2, prop={"ha": "center"})
|
||
|
|
ax.add_artist(text1)
|
||
|
|
text2 = AnchoredText("test\ntest long text", loc="center right",
|
||
|
|
pad=0.2, prop={"ha": "right"})
|
||
|
|
ax.add_artist(text2)
|
||
|
|
|
||
|
|
|
||
|
|
def test_annotationbbox_extents():
|
||
|
|
plt.rcParams.update(plt.rcParamsDefault)
|
||
|
|
fig, ax = plt.subplots(figsize=(4, 3), dpi=100)
|
||
|
|
|
||
|
|
ax.axis([0, 1, 0, 1])
|
||
|
|
|
||
|
|
an1 = ax.annotate("Annotation", xy=(.9, .9), xytext=(1.1, 1.1),
|
||
|
|
arrowprops=dict(arrowstyle="->"), clip_on=False,
|
||
|
|
va="baseline", ha="left")
|
||
|
|
|
||
|
|
da = DrawingArea(20, 20, 0, 0, clip=True)
|
||
|
|
p = mpatches.Circle((-10, 30), 32)
|
||
|
|
da.add_artist(p)
|
||
|
|
|
||
|
|
ab3 = AnnotationBbox(da, [.5, .5], xybox=(-0.2, 0.5), xycoords='data',
|
||
|
|
boxcoords="axes fraction", box_alignment=(0., .5),
|
||
|
|
arrowprops=dict(arrowstyle="->"))
|
||
|
|
ax.add_artist(ab3)
|
||
|
|
|
||
|
|
im = OffsetImage(np.random.rand(10, 10), zoom=3)
|
||
|
|
im.image.axes = ax
|
||
|
|
ab6 = AnnotationBbox(im, (0.5, -.3), xybox=(0, 75),
|
||
|
|
xycoords='axes fraction',
|
||
|
|
boxcoords="offset points", pad=0.3,
|
||
|
|
arrowprops=dict(arrowstyle="->"))
|
||
|
|
ax.add_artist(ab6)
|
||
|
|
|
||
|
|
fig.canvas.draw()
|
||
|
|
renderer = fig.canvas.get_renderer()
|
||
|
|
|
||
|
|
# Test Annotation
|
||
|
|
bb1w = an1.get_window_extent(renderer)
|
||
|
|
bb1e = an1.get_tightbbox(renderer)
|
||
|
|
|
||
|
|
target1 = [332.9, 242.8, 467.0, 298.9]
|
||
|
|
assert_allclose(bb1w.extents, target1, atol=2)
|
||
|
|
assert_allclose(bb1e.extents, target1, atol=2)
|
||
|
|
|
||
|
|
# Test AnnotationBbox
|
||
|
|
bb3w = ab3.get_window_extent(renderer)
|
||
|
|
bb3e = ab3.get_tightbbox(renderer)
|
||
|
|
|
||
|
|
target3 = [-17.6, 129.0, 200.7, 167.9]
|
||
|
|
assert_allclose(bb3w.extents, target3, atol=2)
|
||
|
|
assert_allclose(bb3e.extents, target3, atol=2)
|
||
|
|
|
||
|
|
bb6w = ab6.get_window_extent(renderer)
|
||
|
|
bb6e = ab6.get_tightbbox(renderer)
|
||
|
|
|
||
|
|
target6 = [180.0, -32.0, 230.0, 92.9]
|
||
|
|
assert_allclose(bb6w.extents, target6, atol=2)
|
||
|
|
assert_allclose(bb6e.extents, target6, atol=2)
|
||
|
|
|
||
|
|
# Test bbox_inches='tight'
|
||
|
|
buf = io.BytesIO()
|
||
|
|
fig.savefig(buf, bbox_inches='tight')
|
||
|
|
buf.seek(0)
|
||
|
|
shape = plt.imread(buf).shape
|
||
|
|
targetshape = (350, 504, 4)
|
||
|
|
assert_allclose(shape, targetshape, atol=2)
|
||
|
|
|
||
|
|
# Simple smoke test for tight_layout, to make sure it does not error out.
|
||
|
|
fig.canvas.draw()
|
||
|
|
fig.tight_layout()
|
||
|
|
fig.canvas.draw()
|