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test_widgets.py
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1759 lines (1439 loc) · 64.8 KB
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import functools
import io
import operator
from unittest import mock
from matplotlib.backend_bases import MouseEvent
import matplotlib.colors as mcolors
import matplotlib.widgets as widgets
import matplotlib.pyplot as plt
from matplotlib.testing.decorators import check_figures_equal, image_comparison
from matplotlib.testing.widgets import (click_and_drag, do_event, get_ax,
mock_event, noop)
import numpy as np
from numpy.testing import assert_allclose
import pytest
@pytest.fixture
def ax():
return get_ax()
def test_save_blitted_widget_as_pdf():
from matplotlib.widgets import CheckButtons, RadioButtons
from matplotlib.cbook import _get_running_interactive_framework
if _get_running_interactive_framework() not in ['headless', None]:
pytest.xfail("Callback exceptions are not raised otherwise.")
fig, ax = plt.subplots(
nrows=2, ncols=2, figsize=(5, 2), width_ratios=[1, 2]
)
default_rb = RadioButtons(ax[0, 0], ['Apples', 'Oranges'])
styled_rb = RadioButtons(
ax[0, 1], ['Apples', 'Oranges'],
label_props={'color': ['red', 'orange'],
'fontsize': [16, 20]},
radio_props={'edgecolor': ['red', 'orange'],
'facecolor': ['mistyrose', 'peachpuff']}
)
default_cb = CheckButtons(ax[1, 0], ['Apples', 'Oranges'],
actives=[True, True])
styled_cb = CheckButtons(
ax[1, 1], ['Apples', 'Oranges'],
actives=[True, True],
label_props={'color': ['red', 'orange'],
'fontsize': [16, 20]},
frame_props={'edgecolor': ['red', 'orange'],
'facecolor': ['mistyrose', 'peachpuff']},
check_props={'color': ['darkred', 'darkorange']}
)
ax[0, 0].set_title('Default')
ax[0, 1].set_title('Stylized')
# force an Agg render
fig.canvas.draw()
# force a pdf save
with io.BytesIO() as result_after:
fig.savefig(result_after, format='pdf')
@pytest.mark.parametrize('kwargs', [
dict(),
dict(useblit=True, button=1),
dict(minspanx=10, minspany=10, spancoords='pixels'),
dict(props=dict(fill=True)),
])
def test_rectangle_selector(ax, kwargs):
onselect = mock.Mock(spec=noop, return_value=None)
tool = widgets.RectangleSelector(ax, onselect=onselect, **kwargs)
do_event(tool, 'press', xdata=100, ydata=100, button=1)
do_event(tool, 'onmove', xdata=199, ydata=199, button=1)
# purposely drag outside of axis for release
do_event(tool, 'release', xdata=250, ydata=250, button=1)
if kwargs.get('drawtype', None) not in ['line', 'none']:
assert_allclose(tool.geometry,
[[100., 100, 199, 199, 100],
[100, 199, 199, 100, 100]],
err_msg=tool.geometry)
onselect.assert_called_once()
(epress, erelease), kwargs = onselect.call_args
assert epress.xdata == 100
assert epress.ydata == 100
assert erelease.xdata == 199
assert erelease.ydata == 199
assert kwargs == {}
@pytest.mark.parametrize('spancoords', ['data', 'pixels'])
@pytest.mark.parametrize('minspanx, x1', [[0, 10], [1, 10.5], [1, 11]])
@pytest.mark.parametrize('minspany, y1', [[0, 10], [1, 10.5], [1, 11]])
def test_rectangle_minspan(ax, spancoords, minspanx, x1, minspany, y1):
onselect = mock.Mock(spec=noop, return_value=None)
x0, y0 = (10, 10)
if spancoords == 'pixels':
minspanx, minspany = (ax.transData.transform((x1, y1)) -
ax.transData.transform((x0, y0)))
tool = widgets.RectangleSelector(ax, onselect=onselect, interactive=True,
spancoords=spancoords,
minspanx=minspanx, minspany=minspany)
# Too small to create a selector
click_and_drag(tool, start=(x0, x1), end=(y0, y1))
assert not tool._selection_completed
onselect.assert_not_called()
click_and_drag(tool, start=(20, 20), end=(30, 30))
assert tool._selection_completed
onselect.assert_called_once()
# Too small to create a selector. Should clear existing selector, and
# trigger onselect because there was a preexisting selector
onselect.reset_mock()
click_and_drag(tool, start=(x0, y0), end=(x1, y1))
assert not tool._selection_completed
onselect.assert_called_once()
(epress, erelease), kwargs = onselect.call_args
assert epress.xdata == x0
assert epress.ydata == y0
assert erelease.xdata == x1
assert erelease.ydata == y1
assert kwargs == {}
@pytest.mark.parametrize('drag_from_anywhere, new_center',
[[True, (60, 75)],
[False, (30, 20)]])
def test_rectangle_drag(ax, drag_from_anywhere, new_center):
tool = widgets.RectangleSelector(ax, interactive=True,
drag_from_anywhere=drag_from_anywhere)
# Create rectangle
click_and_drag(tool, start=(0, 10), end=(100, 120))
assert tool.center == (50, 65)
# Drag inside rectangle, but away from centre handle
#
# If drag_from_anywhere == True, this will move the rectangle by (10, 10),
# giving it a new center of (60, 75)
#
# If drag_from_anywhere == False, this will create a new rectangle with
# center (30, 20)
click_and_drag(tool, start=(25, 15), end=(35, 25))
assert tool.center == new_center
# Check that in both cases, dragging outside the rectangle draws a new
# rectangle
click_and_drag(tool, start=(175, 185), end=(185, 195))
assert tool.center == (180, 190)
def test_rectangle_selector_set_props_handle_props(ax):
tool = widgets.RectangleSelector(ax, interactive=True,
props=dict(facecolor='b', alpha=0.2),
handle_props=dict(alpha=0.5))
# Create rectangle
click_and_drag(tool, start=(0, 10), end=(100, 120))
artist = tool._selection_artist
assert artist.get_facecolor() == mcolors.to_rgba('b', alpha=0.2)
tool.set_props(facecolor='r', alpha=0.3)
assert artist.get_facecolor() == mcolors.to_rgba('r', alpha=0.3)
for artist in tool._handles_artists:
assert artist.get_markeredgecolor() == 'black'
assert artist.get_alpha() == 0.5
tool.set_handle_props(markeredgecolor='r', alpha=0.3)
for artist in tool._handles_artists:
assert artist.get_markeredgecolor() == 'r'
assert artist.get_alpha() == 0.3
def test_rectangle_resize(ax):
tool = widgets.RectangleSelector(ax, interactive=True)
# Create rectangle
click_and_drag(tool, start=(0, 10), end=(100, 120))
assert tool.extents == (0.0, 100.0, 10.0, 120.0)
# resize NE handle
extents = tool.extents
xdata, ydata = extents[1], extents[3]
xdata_new, ydata_new = xdata + 10, ydata + 5
click_and_drag(tool, start=(xdata, ydata), end=(xdata_new, ydata_new))
assert tool.extents == (extents[0], xdata_new, extents[2], ydata_new)
# resize E handle
extents = tool.extents
xdata, ydata = extents[1], extents[2] + (extents[3] - extents[2]) / 2
xdata_new, ydata_new = xdata + 10, ydata
click_and_drag(tool, start=(xdata, ydata), end=(xdata_new, ydata_new))
assert tool.extents == (extents[0], xdata_new, extents[2], extents[3])
# resize W handle
extents = tool.extents
xdata, ydata = extents[0], extents[2] + (extents[3] - extents[2]) / 2
xdata_new, ydata_new = xdata + 15, ydata
click_and_drag(tool, start=(xdata, ydata), end=(xdata_new, ydata_new))
assert tool.extents == (xdata_new, extents[1], extents[2], extents[3])
# resize SW handle
extents = tool.extents
xdata, ydata = extents[0], extents[2]
xdata_new, ydata_new = xdata + 20, ydata + 25
click_and_drag(tool, start=(xdata, ydata), end=(xdata_new, ydata_new))
assert tool.extents == (xdata_new, extents[1], ydata_new, extents[3])
def test_rectangle_add_state(ax):
tool = widgets.RectangleSelector(ax, interactive=True)
# Create rectangle
click_and_drag(tool, start=(70, 65), end=(125, 130))
with pytest.raises(ValueError):
tool.add_state('unsupported_state')
with pytest.raises(ValueError):
tool.add_state('clear')
tool.add_state('move')
tool.add_state('square')
tool.add_state('center')
@pytest.mark.parametrize('add_state', [True, False])
def test_rectangle_resize_center(ax, add_state):
tool = widgets.RectangleSelector(ax, interactive=True)
# Create rectangle
click_and_drag(tool, start=(70, 65), end=(125, 130))
assert tool.extents == (70.0, 125.0, 65.0, 130.0)
if add_state:
tool.add_state('center')
use_key = None
else:
use_key = 'control'
# resize NE handle
extents = tool.extents
xdata, ydata = extents[1], extents[3]
xdiff, ydiff = 10, 5
xdata_new, ydata_new = xdata + xdiff, ydata + ydiff
click_and_drag(tool, start=(xdata, ydata), end=(xdata_new, ydata_new),
key=use_key)
assert tool.extents == (extents[0] - xdiff, xdata_new,
extents[2] - ydiff, ydata_new)
# resize E handle
extents = tool.extents
xdata, ydata = extents[1], extents[2] + (extents[3] - extents[2]) / 2
xdiff = 10
xdata_new, ydata_new = xdata + xdiff, ydata
click_and_drag(tool, start=(xdata, ydata), end=(xdata_new, ydata_new),
key=use_key)
assert tool.extents == (extents[0] - xdiff, xdata_new,
extents[2], extents[3])
# resize E handle negative diff
extents = tool.extents
xdata, ydata = extents[1], extents[2] + (extents[3] - extents[2]) / 2
xdiff = -20
xdata_new, ydata_new = xdata + xdiff, ydata
click_and_drag(tool, start=(xdata, ydata), end=(xdata_new, ydata_new),
key=use_key)
assert tool.extents == (extents[0] - xdiff, xdata_new,
extents[2], extents[3])
# resize W handle
extents = tool.extents
xdata, ydata = extents[0], extents[2] + (extents[3] - extents[2]) / 2
xdiff = 15
xdata_new, ydata_new = xdata + xdiff, ydata
click_and_drag(tool, start=(xdata, ydata), end=(xdata_new, ydata_new),
key=use_key)
assert tool.extents == (xdata_new, extents[1] - xdiff,
extents[2], extents[3])
# resize W handle negative diff
extents = tool.extents
xdata, ydata = extents[0], extents[2] + (extents[3] - extents[2]) / 2
xdiff = -25
xdata_new, ydata_new = xdata + xdiff, ydata
click_and_drag(tool, start=(xdata, ydata), end=(xdata_new, ydata_new),
key=use_key)
assert tool.extents == (xdata_new, extents[1] - xdiff,
extents[2], extents[3])
# resize SW handle
extents = tool.extents
xdata, ydata = extents[0], extents[2]
xdiff, ydiff = 20, 25
xdata_new, ydata_new = xdata + xdiff, ydata + ydiff
click_and_drag(tool, start=(xdata, ydata), end=(xdata_new, ydata_new),
key=use_key)
assert tool.extents == (xdata_new, extents[1] - xdiff,
ydata_new, extents[3] - ydiff)
@pytest.mark.parametrize('add_state', [True, False])
def test_rectangle_resize_square(ax, add_state):
tool = widgets.RectangleSelector(ax, interactive=True)
# Create rectangle
click_and_drag(tool, start=(70, 65), end=(120, 115))
assert tool.extents == (70.0, 120.0, 65.0, 115.0)
if add_state:
tool.add_state('square')
use_key = None
else:
use_key = 'shift'
# resize NE handle
extents = tool.extents
xdata, ydata = extents[1], extents[3]
xdiff, ydiff = 10, 5
xdata_new, ydata_new = xdata + xdiff, ydata + ydiff
click_and_drag(tool, start=(xdata, ydata), end=(xdata_new, ydata_new),
key=use_key)
assert tool.extents == (extents[0], xdata_new,
extents[2], extents[3] + xdiff)
# resize E handle
extents = tool.extents
xdata, ydata = extents[1], extents[2] + (extents[3] - extents[2]) / 2
xdiff = 10
xdata_new, ydata_new = xdata + xdiff, ydata
click_and_drag(tool, start=(xdata, ydata), end=(xdata_new, ydata_new),
key=use_key)
assert tool.extents == (extents[0], xdata_new,
extents[2], extents[3] + xdiff)
# resize E handle negative diff
extents = tool.extents
xdata, ydata = extents[1], extents[2] + (extents[3] - extents[2]) / 2
xdiff = -20
xdata_new, ydata_new = xdata + xdiff, ydata
click_and_drag(tool, start=(xdata, ydata), end=(xdata_new, ydata_new),
key=use_key)
assert tool.extents == (extents[0], xdata_new,
extents[2], extents[3] + xdiff)
# resize W handle
extents = tool.extents
xdata, ydata = extents[0], extents[2] + (extents[3] - extents[2]) / 2
xdiff = 15
xdata_new, ydata_new = xdata + xdiff, ydata
click_and_drag(tool, start=(xdata, ydata), end=(xdata_new, ydata_new),
key=use_key)
assert tool.extents == (xdata_new, extents[1],
extents[2], extents[3] - xdiff)
# resize W handle negative diff
extents = tool.extents
xdata, ydata = extents[0], extents[2] + (extents[3] - extents[2]) / 2
xdiff = -25
xdata_new, ydata_new = xdata + xdiff, ydata
click_and_drag(tool, start=(xdata, ydata), end=(xdata_new, ydata_new),
key=use_key)
assert tool.extents == (xdata_new, extents[1],
extents[2], extents[3] - xdiff)
# resize SW handle
extents = tool.extents
xdata, ydata = extents[0], extents[2]
xdiff, ydiff = 20, 25
xdata_new, ydata_new = xdata + xdiff, ydata + ydiff
click_and_drag(tool, start=(xdata, ydata), end=(xdata_new, ydata_new),
key=use_key)
assert tool.extents == (extents[0] + ydiff, extents[1],
ydata_new, extents[3])
def test_rectangle_resize_square_center(ax):
tool = widgets.RectangleSelector(ax, interactive=True)
# Create rectangle
click_and_drag(tool, start=(70, 65), end=(120, 115))
tool.add_state('square')
tool.add_state('center')
assert_allclose(tool.extents, (70.0, 120.0, 65.0, 115.0))
# resize NE handle
extents = tool.extents
xdata, ydata = extents[1], extents[3]
xdiff, ydiff = 10, 5
xdata_new, ydata_new = xdata + xdiff, ydata + ydiff
click_and_drag(tool, start=(xdata, ydata), end=(xdata_new, ydata_new))
assert_allclose(tool.extents, (extents[0] - xdiff, xdata_new,
extents[2] - xdiff, extents[3] + xdiff))
# resize E handle
extents = tool.extents
xdata, ydata = extents[1], extents[2] + (extents[3] - extents[2]) / 2
xdiff = 10
xdata_new, ydata_new = xdata + xdiff, ydata
click_and_drag(tool, start=(xdata, ydata), end=(xdata_new, ydata_new))
assert_allclose(tool.extents, (extents[0] - xdiff, xdata_new,
extents[2] - xdiff, extents[3] + xdiff))
# resize E handle negative diff
extents = tool.extents
xdata, ydata = extents[1], extents[2] + (extents[3] - extents[2]) / 2
xdiff = -20
xdata_new, ydata_new = xdata + xdiff, ydata
click_and_drag(tool, start=(xdata, ydata), end=(xdata_new, ydata_new))
assert_allclose(tool.extents, (extents[0] - xdiff, xdata_new,
extents[2] - xdiff, extents[3] + xdiff))
# resize W handle
extents = tool.extents
xdata, ydata = extents[0], extents[2] + (extents[3] - extents[2]) / 2
xdiff = 5
xdata_new, ydata_new = xdata + xdiff, ydata
click_and_drag(tool, start=(xdata, ydata), end=(xdata_new, ydata_new))
assert_allclose(tool.extents, (xdata_new, extents[1] - xdiff,
extents[2] + xdiff, extents[3] - xdiff))
# resize W handle negative diff
extents = tool.extents
xdata, ydata = extents[0], extents[2] + (extents[3] - extents[2]) / 2
xdiff = -25
xdata_new, ydata_new = xdata + xdiff, ydata
click_and_drag(tool, start=(xdata, ydata), end=(xdata_new, ydata_new))
assert_allclose(tool.extents, (xdata_new, extents[1] - xdiff,
extents[2] + xdiff, extents[3] - xdiff))
# resize SW handle
extents = tool.extents
xdata, ydata = extents[0], extents[2]
xdiff, ydiff = 20, 25
xdata_new, ydata_new = xdata + xdiff, ydata + ydiff
click_and_drag(tool, start=(xdata, ydata), end=(xdata_new, ydata_new))
assert_allclose(tool.extents, (extents[0] + ydiff, extents[1] - ydiff,
ydata_new, extents[3] - ydiff))
@pytest.mark.parametrize('selector_class',
[widgets.RectangleSelector, widgets.EllipseSelector])
def test_rectangle_rotate(ax, selector_class):
tool = selector_class(ax, interactive=True)
# Draw rectangle
click_and_drag(tool, start=(100, 100), end=(130, 140))
assert tool.extents == (100, 130, 100, 140)
assert len(tool._state) == 0
# Rotate anticlockwise using top-right corner
do_event(tool, 'on_key_press', key='r')
assert tool._state == {'rotate'}
assert len(tool._state) == 1
click_and_drag(tool, start=(130, 140), end=(120, 145))
do_event(tool, 'on_key_press', key='r')
assert len(tool._state) == 0
# Extents shouldn't change (as shape of rectangle hasn't changed)
assert tool.extents == (100, 130, 100, 140)
assert_allclose(tool.rotation, 25.56, atol=0.01)
tool.rotation = 45
assert tool.rotation == 45
# Corners should move
assert_allclose(tool.corners,
np.array([[118.53, 139.75, 111.46, 90.25],
[95.25, 116.46, 144.75, 123.54]]), atol=0.01)
# Scale using top-right corner
click_and_drag(tool, start=(110, 145), end=(110, 160))
assert_allclose(tool.extents, (100, 139.75, 100, 151.82), atol=0.01)
if selector_class == widgets.RectangleSelector:
with pytest.raises(ValueError):
tool._selection_artist.rotation_point = 'unvalid_value'
def test_rectangle_add_remove_set(ax):
tool = widgets.RectangleSelector(ax, interactive=True)
# Draw rectangle
click_and_drag(tool, start=(100, 100), end=(130, 140))
assert tool.extents == (100, 130, 100, 140)
assert len(tool._state) == 0
for state in ['rotate', 'square', 'center']:
tool.add_state(state)
assert len(tool._state) == 1
tool.remove_state(state)
assert len(tool._state) == 0
@pytest.mark.parametrize('use_data_coordinates', [False, True])
def test_rectangle_resize_square_center_aspect(ax, use_data_coordinates):
ax.set_aspect(0.8)
tool = widgets.RectangleSelector(ax, interactive=True,
use_data_coordinates=use_data_coordinates)
# Create rectangle
click_and_drag(tool, start=(70, 65), end=(120, 115))
assert tool.extents == (70.0, 120.0, 65.0, 115.0)
tool.add_state('square')
tool.add_state('center')
if use_data_coordinates:
# resize E handle
extents = tool.extents
xdata, ydata, width = extents[1], extents[3], extents[1] - extents[0]
xdiff, ycenter = 10, extents[2] + (extents[3] - extents[2]) / 2
xdata_new, ydata_new = xdata + xdiff, ydata
ychange = width / 2 + xdiff
click_and_drag(tool, start=(xdata, ydata), end=(xdata_new, ydata_new))
assert_allclose(tool.extents, [extents[0] - xdiff, xdata_new,
ycenter - ychange, ycenter + ychange])
else:
# resize E handle
extents = tool.extents
xdata, ydata = extents[1], extents[3]
xdiff = 10
xdata_new, ydata_new = xdata + xdiff, ydata
ychange = xdiff * 1 / tool._aspect_ratio_correction
click_and_drag(tool, start=(xdata, ydata), end=(xdata_new, ydata_new))
assert_allclose(tool.extents, [extents[0] - xdiff, xdata_new,
46.25, 133.75])
def test_ellipse(ax):
"""For ellipse, test out the key modifiers"""
tool = widgets.EllipseSelector(ax, grab_range=10, interactive=True)
tool.extents = (100, 150, 100, 150)
# drag the rectangle
click_and_drag(tool, start=(125, 125), end=(145, 145))
assert tool.extents == (120, 170, 120, 170)
# create from center
click_and_drag(tool, start=(100, 100), end=(125, 125), key='control')
assert tool.extents == (75, 125, 75, 125)
# create a square
click_and_drag(tool, start=(10, 10), end=(35, 30), key='shift')
extents = [int(e) for e in tool.extents]
assert extents == [10, 35, 10, 35]
# create a square from center
click_and_drag(tool, start=(100, 100), end=(125, 130), key='ctrl+shift')
extents = [int(e) for e in tool.extents]
assert extents == [70, 130, 70, 130]
assert tool.geometry.shape == (2, 73)
assert_allclose(tool.geometry[:, 0], [70., 100])
def test_rectangle_handles(ax):
tool = widgets.RectangleSelector(ax, grab_range=10, interactive=True,
handle_props={'markerfacecolor': 'r',
'markeredgecolor': 'b'})
tool.extents = (100, 150, 100, 150)
assert_allclose(tool.corners, ((100, 150, 150, 100), (100, 100, 150, 150)))
assert tool.extents == (100, 150, 100, 150)
assert_allclose(tool.edge_centers,
((100, 125.0, 150, 125.0), (125.0, 100, 125.0, 150)))
assert tool.extents == (100, 150, 100, 150)
# grab a corner and move it
click_and_drag(tool, start=(100, 100), end=(120, 120))
assert tool.extents == (120, 150, 120, 150)
# grab the center and move it
click_and_drag(tool, start=(132, 132), end=(120, 120))
assert tool.extents == (108, 138, 108, 138)
# create a new rectangle
click_and_drag(tool, start=(10, 10), end=(100, 100))
assert tool.extents == (10, 100, 10, 100)
# Check that marker_props worked.
assert mcolors.same_color(
tool._corner_handles.artists[0].get_markerfacecolor(), 'r')
assert mcolors.same_color(
tool._corner_handles.artists[0].get_markeredgecolor(), 'b')
@pytest.mark.parametrize('interactive', [True, False])
def test_rectangle_selector_onselect(ax, interactive):
# check when press and release events take place at the same position
onselect = mock.Mock(spec=noop, return_value=None)
tool = widgets.RectangleSelector(ax, onselect=onselect, interactive=interactive)
# move outside of axis
click_and_drag(tool, start=(100, 110), end=(150, 120))
onselect.assert_called_once()
assert tool.extents == (100.0, 150.0, 110.0, 120.0)
onselect.reset_mock()
click_and_drag(tool, start=(10, 100), end=(10, 100))
onselect.assert_called_once()
@pytest.mark.parametrize('ignore_event_outside', [True, False])
def test_rectangle_selector_ignore_outside(ax, ignore_event_outside):
onselect = mock.Mock(spec=noop, return_value=None)
tool = widgets.RectangleSelector(ax, onselect=onselect,
ignore_event_outside=ignore_event_outside)
click_and_drag(tool, start=(100, 110), end=(150, 120))
onselect.assert_called_once()
assert tool.extents == (100.0, 150.0, 110.0, 120.0)
onselect.reset_mock()
# Trigger event outside of span
click_and_drag(tool, start=(150, 150), end=(160, 160))
if ignore_event_outside:
# event have been ignored and span haven't changed.
onselect.assert_not_called()
assert tool.extents == (100.0, 150.0, 110.0, 120.0)
else:
# A new shape is created
onselect.assert_called_once()
assert tool.extents == (150.0, 160.0, 150.0, 160.0)
@pytest.mark.parametrize('orientation, onmove_callback, kwargs', [
('horizontal', False, dict(minspan=10, useblit=True)),
('vertical', True, dict(button=1)),
('horizontal', False, dict(props=dict(fill=True))),
('horizontal', False, dict(interactive=True)),
])
def test_span_selector(ax, orientation, onmove_callback, kwargs):
onselect = mock.Mock(spec=noop, return_value=None)
onmove = mock.Mock(spec=noop, return_value=None)
if onmove_callback:
kwargs['onmove_callback'] = onmove
# While at it, also test that span selectors work in the presence of twin axes on
# top of the axes that contain the selector. Note that we need to unforce the axes
# aspect here, otherwise the twin axes forces the original axes' limits (to respect
# aspect=1) which makes some of the values below go out of bounds.
ax.set_aspect("auto")
tax = ax.twinx()
tool = widgets.SpanSelector(ax, onselect, orientation, **kwargs)
do_event(tool, 'press', xdata=100, ydata=100, button=1)
# move outside of axis
do_event(tool, 'onmove', xdata=199, ydata=199, button=1)
do_event(tool, 'release', xdata=250, ydata=250, button=1)
onselect.assert_called_once_with(100, 199)
if onmove_callback:
onmove.assert_called_once_with(100, 199)
@pytest.mark.parametrize('interactive', [True, False])
def test_span_selector_onselect(ax, interactive):
onselect = mock.Mock(spec=noop, return_value=None)
tool = widgets.SpanSelector(ax, onselect, 'horizontal',
interactive=interactive)
# move outside of axis
click_and_drag(tool, start=(100, 100), end=(150, 100))
onselect.assert_called_once()
assert tool.extents == (100, 150)
onselect.reset_mock()
click_and_drag(tool, start=(10, 100), end=(10, 100))
onselect.assert_called_once()
@pytest.mark.parametrize('ignore_event_outside', [True, False])
def test_span_selector_ignore_outside(ax, ignore_event_outside):
onselect = mock.Mock(spec=noop, return_value=None)
onmove = mock.Mock(spec=noop, return_value=None)
tool = widgets.SpanSelector(ax, onselect, 'horizontal',
onmove_callback=onmove,
ignore_event_outside=ignore_event_outside)
click_and_drag(tool, start=(100, 100), end=(125, 125))
onselect.assert_called_once()
onmove.assert_called_once()
assert tool.extents == (100, 125)
onselect.reset_mock()
onmove.reset_mock()
# Trigger event outside of span
click_and_drag(tool, start=(150, 150), end=(160, 160))
if ignore_event_outside:
# event have been ignored and span haven't changed.
onselect.assert_not_called()
onmove.assert_not_called()
assert tool.extents == (100, 125)
else:
# A new shape is created
onselect.assert_called_once()
onmove.assert_called_once()
assert tool.extents == (150, 160)
@pytest.mark.parametrize('drag_from_anywhere', [True, False])
def test_span_selector_drag(ax, drag_from_anywhere):
# Create span
tool = widgets.SpanSelector(ax, onselect=noop, direction='horizontal',
interactive=True,
drag_from_anywhere=drag_from_anywhere)
click_and_drag(tool, start=(10, 10), end=(100, 120))
assert tool.extents == (10, 100)
# Drag inside span
#
# If drag_from_anywhere == True, this will move the span by 10,
# giving new value extents = 20, 110
#
# If drag_from_anywhere == False, this will create a new span with
# value extents = 25, 35
click_and_drag(tool, start=(25, 15), end=(35, 25))
if drag_from_anywhere:
assert tool.extents == (20, 110)
else:
assert tool.extents == (25, 35)
# Check that in both cases, dragging outside the span draws a new span
click_and_drag(tool, start=(175, 185), end=(185, 195))
assert tool.extents == (175, 185)
def test_span_selector_direction(ax):
tool = widgets.SpanSelector(ax, onselect=noop, direction='horizontal',
interactive=True)
assert tool.direction == 'horizontal'
assert tool._edge_handles.direction == 'horizontal'
with pytest.raises(ValueError):
tool = widgets.SpanSelector(ax, onselect=noop,
direction='invalid_direction')
tool.direction = 'vertical'
assert tool.direction == 'vertical'
assert tool._edge_handles.direction == 'vertical'
with pytest.raises(ValueError):
tool.direction = 'invalid_string'
def test_span_selector_set_props_handle_props(ax):
tool = widgets.SpanSelector(ax, onselect=noop, direction='horizontal',
interactive=True,
props=dict(facecolor='b', alpha=0.2),
handle_props=dict(alpha=0.5))
# Create rectangle
click_and_drag(tool, start=(0, 10), end=(100, 120))
artist = tool._selection_artist
assert artist.get_facecolor() == mcolors.to_rgba('b', alpha=0.2)
tool.set_props(facecolor='r', alpha=0.3)
assert artist.get_facecolor() == mcolors.to_rgba('r', alpha=0.3)
for artist in tool._handles_artists:
assert artist.get_color() == 'b'
assert artist.get_alpha() == 0.5
tool.set_handle_props(color='r', alpha=0.3)
for artist in tool._handles_artists:
assert artist.get_color() == 'r'
assert artist.get_alpha() == 0.3
@pytest.mark.parametrize('selector', ['span', 'rectangle'])
def test_selector_clear(ax, selector):
kwargs = dict(ax=ax, interactive=True)
if selector == 'span':
Selector = widgets.SpanSelector
kwargs['direction'] = 'horizontal'
kwargs['onselect'] = noop
else:
Selector = widgets.RectangleSelector
tool = Selector(**kwargs)
click_and_drag(tool, start=(10, 10), end=(100, 120))
# press-release event outside the selector to clear the selector
click_and_drag(tool, start=(130, 130), end=(130, 130))
assert not tool._selection_completed
kwargs['ignore_event_outside'] = True
tool = Selector(**kwargs)
assert tool.ignore_event_outside
click_and_drag(tool, start=(10, 10), end=(100, 120))
# press-release event outside the selector ignored
click_and_drag(tool, start=(130, 130), end=(130, 130))
assert tool._selection_completed
do_event(tool, 'on_key_press', key='escape')
assert not tool._selection_completed
@pytest.mark.parametrize('selector', ['span', 'rectangle'])
def test_selector_clear_method(ax, selector):
if selector == 'span':
tool = widgets.SpanSelector(ax, onselect=noop, direction='horizontal',
interactive=True,
ignore_event_outside=True)
else:
tool = widgets.RectangleSelector(ax, interactive=True)
click_and_drag(tool, start=(10, 10), end=(100, 120))
assert tool._selection_completed
assert tool.get_visible()
if selector == 'span':
assert tool.extents == (10, 100)
tool.clear()
assert not tool._selection_completed
assert not tool.get_visible()
# Do another cycle of events to make sure we can
click_and_drag(tool, start=(10, 10), end=(50, 120))
assert tool._selection_completed
assert tool.get_visible()
if selector == 'span':
assert tool.extents == (10, 50)
def test_span_selector_add_state(ax):
tool = widgets.SpanSelector(ax, noop, 'horizontal',
interactive=True)
with pytest.raises(ValueError):
tool.add_state('unsupported_state')
with pytest.raises(ValueError):
tool.add_state('center')
with pytest.raises(ValueError):
tool.add_state('square')
tool.add_state('move')
def test_tool_line_handle(ax):
positions = [20, 30, 50]
tool_line_handle = widgets.ToolLineHandles(ax, positions, 'horizontal',
useblit=False)
for artist in tool_line_handle.artists:
assert not artist.get_animated()
assert not artist.get_visible()
tool_line_handle.set_visible(True)
tool_line_handle.set_animated(True)
for artist in tool_line_handle.artists:
assert artist.get_animated()
assert artist.get_visible()
assert tool_line_handle.positions == positions
@pytest.mark.parametrize('direction', ("horizontal", "vertical"))
def test_span_selector_bound(direction):
fig, ax = plt.subplots(1, 1)
ax.plot([10, 20], [10, 30])
fig.canvas.draw()
x_bound = ax.get_xbound()
y_bound = ax.get_ybound()
tool = widgets.SpanSelector(ax, print, direction, interactive=True)
assert ax.get_xbound() == x_bound
assert ax.get_ybound() == y_bound
bound = x_bound if direction == 'horizontal' else y_bound
assert tool._edge_handles.positions == list(bound)
press_data = (10.5, 11.5)
move_data = (11, 13) # Updating selector is done in onmove
release_data = move_data
click_and_drag(tool, start=press_data, end=move_data)
assert ax.get_xbound() == x_bound
assert ax.get_ybound() == y_bound
index = 0 if direction == 'horizontal' else 1
handle_positions = [press_data[index], release_data[index]]
assert tool._edge_handles.positions == handle_positions
@pytest.mark.backend('QtAgg', skip_on_importerror=True)
def test_span_selector_animated_artists_callback():
"""Check that the animated artists changed in callbacks are updated."""
x = np.linspace(0, 2 * np.pi, 100)
values = np.sin(x)
fig, ax = plt.subplots()
ln, = ax.plot(x, values, animated=True)
ln2, = ax.plot([], animated=True)
# spin the event loop to let the backend process any pending operations
# before drawing artists
# See blitting tutorial
plt.pause(0.1)
ax.draw_artist(ln)
fig.canvas.blit(fig.bbox)
def mean(vmin, vmax):
# Return mean of values in x between *vmin* and *vmax*
indmin, indmax = np.searchsorted(x, (vmin, vmax))
v = values[indmin:indmax].mean()
ln2.set_data(x, np.full_like(x, v))
span = widgets.SpanSelector(ax, mean, direction='horizontal',
onmove_callback=mean,
interactive=True,
drag_from_anywhere=True,
useblit=True)
# Add span selector and check that the line is draw after it was updated
# by the callback
press_data = [1, 2]
move_data = [2, 2]
do_event(span, 'press', xdata=press_data[0], ydata=press_data[1], button=1)
do_event(span, 'onmove', xdata=move_data[0], ydata=move_data[1], button=1)
assert span._get_animated_artists() == (ln, ln2)
assert ln.stale is False
assert ln2.stale
assert_allclose(ln2.get_ydata(), 0.9547335049088455)
span.update()
assert ln2.stale is False
# Change span selector and check that the line is drawn/updated after its
# value was updated by the callback
press_data = [4, 0]
move_data = [5, 2]
release_data = [5, 2]
do_event(span, 'press', xdata=press_data[0], ydata=press_data[1], button=1)
do_event(span, 'onmove', xdata=move_data[0], ydata=move_data[1], button=1)
assert ln.stale is False
assert ln2.stale
assert_allclose(ln2.get_ydata(), -0.9424150707548072)
do_event(span, 'release', xdata=release_data[0],
ydata=release_data[1], button=1)
assert ln2.stale is False
def test_snapping_values_span_selector(ax):
def onselect(*args):
pass
tool = widgets.SpanSelector(ax, onselect, direction='horizontal',)
snap_function = tool._snap
snap_values = np.linspace(0, 5, 11)
values = np.array([-0.1, 0.1, 0.2, 0.5, 0.6, 0.7, 0.9, 4.76, 5.0, 5.5])
expect = np.array([00.0, 0.0, 0.0, 0.5, 0.5, 0.5, 1.0, 5.00, 5.0, 5.0])
values = snap_function(values, snap_values)
assert_allclose(values, expect)
def test_span_selector_snap(ax):
def onselect(vmin, vmax):
ax._got_onselect = True
snap_values = np.arange(50) * 4
tool = widgets.SpanSelector(ax, onselect, direction='horizontal',
snap_values=snap_values)
tool.extents = (17, 35)
assert tool.extents == (16, 36)
tool.snap_values = None
assert tool.snap_values is None
tool.extents = (17, 35)
assert tool.extents == (17, 35)
def test_span_selector_extents(ax):
tool = widgets.SpanSelector(
ax, lambda a, b: None, "horizontal", ignore_event_outside=True
)
tool.extents = (5, 10)
assert tool.extents == (5, 10)
assert tool._selection_completed
# Since `ignore_event_outside=True`, this event should be ignored
press_data = (12, 14)
release_data = (20, 14)
click_and_drag(tool, start=press_data, end=release_data)
assert tool.extents == (5, 10)
@pytest.mark.parametrize('kwargs', [
dict(),
dict(useblit=False, props=dict(color='red')),
dict(useblit=True, button=1),
])
def test_lasso_selector(ax, kwargs):
onselect = mock.Mock(spec=noop, return_value=None)
tool = widgets.LassoSelector(ax, onselect=onselect, **kwargs)
do_event(tool, 'press', xdata=100, ydata=100, button=1)
do_event(tool, 'onmove', xdata=125, ydata=125, button=1)
do_event(tool, 'release', xdata=150, ydata=150, button=1)
onselect.assert_called_once_with([(100, 100), (125, 125), (150, 150)])
def test_lasso_selector_set_props(ax):
onselect = mock.Mock(spec=noop, return_value=None)