453 lines
15 KiB
Python
453 lines
15 KiB
Python
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from collections import namedtuple
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import io
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import numpy as np
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from numpy.testing import assert_allclose
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import pytest
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from matplotlib.testing.decorators import check_figures_equal, image_comparison
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import matplotlib.pyplot as plt
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import matplotlib.patches as mpatches
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import matplotlib.lines as mlines
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from matplotlib.backend_bases import MouseButton, MouseEvent
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from matplotlib.offsetbox import (
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AnchoredOffsetbox, AnnotationBbox, AnchoredText, DrawingArea, HPacker,
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OffsetBox, OffsetImage, PaddedBox, TextArea, VPacker, _get_packed_offsets)
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@image_comparison(['offsetbox_clipping'], remove_text=True)
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def test_offsetbox_clipping():
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# - create a plot
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# - put an AnchoredOffsetbox with a child DrawingArea
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# at the center of the axes
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# - give the DrawingArea a gray background
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# - put a black line across the bounds of the DrawingArea
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# - see that the black line is clipped to the edges of
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# the DrawingArea.
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fig, ax = plt.subplots()
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size = 100
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da = DrawingArea(size, size, clip=True)
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assert da.clip_children
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bg = mpatches.Rectangle((0, 0), size, size,
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facecolor='#CCCCCC',
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edgecolor='None',
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linewidth=0)
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line = mlines.Line2D([-size*.5, size*1.5], [size/2, size/2],
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color='black',
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linewidth=10)
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anchored_box = AnchoredOffsetbox(
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loc='center',
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child=da,
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pad=0.,
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frameon=False,
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bbox_to_anchor=(.5, .5),
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bbox_transform=ax.transAxes,
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borderpad=0.)
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da.add_artist(bg)
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da.add_artist(line)
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ax.add_artist(anchored_box)
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ax.set_xlim((0, 1))
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ax.set_ylim((0, 1))
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def test_offsetbox_clip_children():
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# - create a plot
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# - put an AnchoredOffsetbox with a child DrawingArea
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# at the center of the axes
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# - give the DrawingArea a gray background
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# - put a black line across the bounds of the DrawingArea
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# - see that the black line is clipped to the edges of
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# the DrawingArea.
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fig, ax = plt.subplots()
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size = 100
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da = DrawingArea(size, size, clip=True)
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bg = mpatches.Rectangle((0, 0), size, size,
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facecolor='#CCCCCC',
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edgecolor='None',
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linewidth=0)
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line = mlines.Line2D([-size*.5, size*1.5], [size/2, size/2],
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color='black',
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linewidth=10)
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anchored_box = AnchoredOffsetbox(
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loc='center',
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child=da,
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pad=0.,
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frameon=False,
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bbox_to_anchor=(.5, .5),
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bbox_transform=ax.transAxes,
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borderpad=0.)
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da.add_artist(bg)
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da.add_artist(line)
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ax.add_artist(anchored_box)
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fig.canvas.draw()
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assert not fig.stale
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da.clip_children = True
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assert fig.stale
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def test_offsetbox_loc_codes():
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# Check that valid string location codes all work with an AnchoredOffsetbox
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codes = {'upper right': 1,
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'upper left': 2,
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'lower left': 3,
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'lower right': 4,
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'right': 5,
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'center left': 6,
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'center right': 7,
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'lower center': 8,
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'upper center': 9,
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'center': 10,
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}
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fig, ax = plt.subplots()
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da = DrawingArea(100, 100)
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for code in codes:
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anchored_box = AnchoredOffsetbox(loc=code, child=da)
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ax.add_artist(anchored_box)
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fig.canvas.draw()
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def test_expand_with_tight_layout():
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# Check issue reported in #10476, and updated due to #10784
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fig, ax = plt.subplots()
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d1 = [1, 2]
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d2 = [2, 1]
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ax.plot(d1, label='series 1')
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ax.plot(d2, label='series 2')
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ax.legend(ncols=2, mode='expand')
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fig.tight_layout() # where the crash used to happen
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@pytest.mark.parametrize('widths',
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([150], [150, 150, 150], [0.1], [0.1, 0.1]))
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@pytest.mark.parametrize('total', (250, 100, 0, -1, None))
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@pytest.mark.parametrize('sep', (250, 1, 0, -1))
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@pytest.mark.parametrize('mode', ("expand", "fixed", "equal"))
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def test_get_packed_offsets(widths, total, sep, mode):
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# Check a (rather arbitrary) set of parameters due to successive similar
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# issue tickets (at least #10476 and #10784) related to corner cases
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# triggered inside this function when calling higher-level functions
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# (e.g. `Axes.legend`).
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# These are just some additional smoke tests. The output is untested.
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_get_packed_offsets(widths, total, sep, mode=mode)
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_Params = namedtuple('_Params', 'wd_list, total, sep, expected')
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@pytest.mark.parametrize('widths, total, sep, expected', [
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_Params( # total=None
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[3, 1, 2], total=None, sep=1, expected=(8, [0, 4, 6])),
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_Params( # total larger than required
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[3, 1, 2], total=10, sep=1, expected=(10, [0, 4, 6])),
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_Params( # total smaller than required
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[3, 1, 2], total=5, sep=1, expected=(5, [0, 4, 6])),
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])
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def test_get_packed_offsets_fixed(widths, total, sep, expected):
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result = _get_packed_offsets(widths, total, sep, mode='fixed')
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assert result[0] == expected[0]
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assert_allclose(result[1], expected[1])
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@pytest.mark.parametrize('widths, total, sep, expected', [
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_Params( # total=None (implicit 1)
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[.1, .1, .1], total=None, sep=None, expected=(1, [0, .45, .9])),
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_Params( # total larger than sum of widths
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[3, 1, 2], total=10, sep=1, expected=(10, [0, 5, 8])),
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_Params( # total smaller sum of widths: overlapping boxes
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[3, 1, 2], total=5, sep=1, expected=(5, [0, 2.5, 3])),
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])
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def test_get_packed_offsets_expand(widths, total, sep, expected):
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result = _get_packed_offsets(widths, total, sep, mode='expand')
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assert result[0] == expected[0]
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assert_allclose(result[1], expected[1])
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@pytest.mark.parametrize('widths, total, sep, expected', [
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_Params( # total larger than required
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[3, 2, 1], total=6, sep=None, expected=(6, [0, 2, 4])),
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_Params( # total smaller sum of widths: overlapping boxes
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[3, 2, 1, .5], total=2, sep=None, expected=(2, [0, 0.5, 1, 1.5])),
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_Params( # total larger than required
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[.5, 1, .2], total=None, sep=1, expected=(6, [0, 2, 4])),
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# the case total=None, sep=None is tested separately below
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])
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def test_get_packed_offsets_equal(widths, total, sep, expected):
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result = _get_packed_offsets(widths, total, sep, mode='equal')
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assert result[0] == expected[0]
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assert_allclose(result[1], expected[1])
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def test_get_packed_offsets_equal_total_none_sep_none():
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with pytest.raises(ValueError):
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_get_packed_offsets([1, 1, 1], total=None, sep=None, mode='equal')
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@pytest.mark.parametrize('child_type', ['draw', 'image', 'text'])
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@pytest.mark.parametrize('boxcoords',
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['axes fraction', 'axes pixels', 'axes points',
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'data'])
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def test_picking(child_type, boxcoords):
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# These all take up approximately the same area.
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if child_type == 'draw':
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picking_child = DrawingArea(5, 5)
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picking_child.add_artist(mpatches.Rectangle((0, 0), 5, 5, linewidth=0))
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elif child_type == 'image':
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im = np.ones((5, 5))
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im[2, 2] = 0
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picking_child = OffsetImage(im)
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elif child_type == 'text':
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picking_child = TextArea('\N{Black Square}', textprops={'fontsize': 5})
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else:
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assert False, f'Unknown picking child type {child_type}'
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fig, ax = plt.subplots()
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ab = AnnotationBbox(picking_child, (0.5, 0.5), boxcoords=boxcoords)
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ab.set_picker(True)
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ax.add_artist(ab)
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calls = []
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fig.canvas.mpl_connect('pick_event', lambda event: calls.append(event))
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# Annotation should be picked by an event occurring at its center.
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if boxcoords == 'axes points':
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x, y = ax.transAxes.transform_point((0, 0))
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x += 0.5 * fig.dpi / 72
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y += 0.5 * fig.dpi / 72
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elif boxcoords == 'axes pixels':
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x, y = ax.transAxes.transform_point((0, 0))
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x += 0.5
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y += 0.5
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else:
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x, y = ax.transAxes.transform_point((0.5, 0.5))
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fig.canvas.draw()
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calls.clear()
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MouseEvent(
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"button_press_event", fig.canvas, x, y, MouseButton.LEFT)._process()
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assert len(calls) == 1 and calls[0].artist == ab
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# Annotation should *not* be picked by an event at its original center
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# point when the limits have changed enough to hide the *xy* point.
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ax.set_xlim(-1, 0)
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ax.set_ylim(-1, 0)
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fig.canvas.draw()
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calls.clear()
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MouseEvent(
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"button_press_event", fig.canvas, x, y, MouseButton.LEFT)._process()
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assert len(calls) == 0
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@image_comparison(['anchoredtext_align.png'], remove_text=True, style='mpl20')
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def test_anchoredtext_horizontal_alignment():
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fig, ax = plt.subplots()
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text0 = AnchoredText("test\ntest long text", loc="center left",
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pad=0.2, prop={"ha": "left"})
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ax.add_artist(text0)
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text1 = AnchoredText("test\ntest long text", loc="center",
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pad=0.2, prop={"ha": "center"})
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ax.add_artist(text1)
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text2 = AnchoredText("test\ntest long text", loc="center right",
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pad=0.2, prop={"ha": "right"})
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ax.add_artist(text2)
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@pytest.mark.parametrize("extent_kind", ["window_extent", "tightbbox"])
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def test_annotationbbox_extents(extent_kind):
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plt.rcParams.update(plt.rcParamsDefault)
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fig, ax = plt.subplots(figsize=(4, 3), dpi=100)
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ax.axis([0, 1, 0, 1])
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an1 = ax.annotate("Annotation", xy=(.9, .9), xytext=(1.1, 1.1),
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arrowprops=dict(arrowstyle="->"), clip_on=False,
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va="baseline", ha="left")
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da = DrawingArea(20, 20, 0, 0, clip=True)
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p = mpatches.Circle((-10, 30), 32)
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da.add_artist(p)
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ab3 = AnnotationBbox(da, [.5, .5], xybox=(-0.2, 0.5), xycoords='data',
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boxcoords="axes fraction", box_alignment=(0., .5),
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arrowprops=dict(arrowstyle="->"))
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ax.add_artist(ab3)
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im = OffsetImage(np.random.rand(10, 10), zoom=3)
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im.image.axes = ax
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ab6 = AnnotationBbox(im, (0.5, -.3), xybox=(0, 75),
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xycoords='axes fraction',
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boxcoords="offset points", pad=0.3,
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arrowprops=dict(arrowstyle="->"))
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ax.add_artist(ab6)
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# Test Annotation
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bb1 = getattr(an1, f"get_{extent_kind}")()
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target1 = [332.9, 242.8, 467.0, 298.9]
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assert_allclose(bb1.extents, target1, atol=2)
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# Test AnnotationBbox
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bb3 = getattr(ab3, f"get_{extent_kind}")()
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target3 = [-17.6, 129.0, 200.7, 167.9]
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assert_allclose(bb3.extents, target3, atol=2)
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bb6 = getattr(ab6, f"get_{extent_kind}")()
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target6 = [180.0, -32.0, 230.0, 92.9]
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assert_allclose(bb6.extents, target6, atol=2)
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# Test bbox_inches='tight'
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buf = io.BytesIO()
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fig.savefig(buf, bbox_inches='tight')
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buf.seek(0)
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shape = plt.imread(buf).shape
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targetshape = (350, 504, 4)
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assert_allclose(shape, targetshape, atol=2)
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# Simple smoke test for tight_layout, to make sure it does not error out.
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fig.canvas.draw()
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fig.tight_layout()
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fig.canvas.draw()
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def test_zorder():
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assert OffsetBox(zorder=42).zorder == 42
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def test_arrowprops_copied():
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da = DrawingArea(20, 20, 0, 0, clip=True)
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arrowprops = {"arrowstyle": "->", "relpos": (.3, .7)}
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ab = AnnotationBbox(da, [.5, .5], xybox=(-0.2, 0.5), xycoords='data',
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boxcoords="axes fraction", box_alignment=(0., .5),
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arrowprops=arrowprops)
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assert ab.arrowprops is not ab
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assert arrowprops["relpos"] == (.3, .7)
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@pytest.mark.parametrize("align", ["baseline", "bottom", "top",
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"left", "right", "center"])
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def test_packers(align):
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# set the DPI to match points to make the math easier below
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fig = plt.figure(dpi=72)
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renderer = fig.canvas.get_renderer()
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|
|
x1, y1 = 10, 30
|
||
|
|
x2, y2 = 20, 60
|
||
|
|
r1 = DrawingArea(x1, y1)
|
||
|
|
r2 = DrawingArea(x2, y2)
|
||
|
|
|
||
|
|
# HPacker
|
||
|
|
hpacker = HPacker(children=[r1, r2], align=align)
|
||
|
|
hpacker.draw(renderer)
|
||
|
|
bbox = hpacker.get_bbox(renderer)
|
||
|
|
px, py = hpacker.get_offset(bbox, renderer)
|
||
|
|
# width, height, xdescent, ydescent
|
||
|
|
assert_allclose(bbox.bounds, (0, 0, x1 + x2, max(y1, y2)))
|
||
|
|
# internal element placement
|
||
|
|
if align in ("baseline", "left", "bottom"):
|
||
|
|
y_height = 0
|
||
|
|
elif align in ("right", "top"):
|
||
|
|
y_height = y2 - y1
|
||
|
|
elif align == "center":
|
||
|
|
y_height = (y2 - y1) / 2
|
||
|
|
# x-offsets, y-offsets
|
||
|
|
assert_allclose([child.get_offset() for child in hpacker.get_children()],
|
||
|
|
[(px, py + y_height), (px + x1, py)])
|
||
|
|
|
||
|
|
# VPacker
|
||
|
|
vpacker = VPacker(children=[r1, r2], align=align)
|
||
|
|
vpacker.draw(renderer)
|
||
|
|
bbox = vpacker.get_bbox(renderer)
|
||
|
|
px, py = vpacker.get_offset(bbox, renderer)
|
||
|
|
# width, height, xdescent, ydescent
|
||
|
|
assert_allclose(bbox.bounds, (0, -max(y1, y2), max(x1, x2), y1 + y2))
|
||
|
|
# internal element placement
|
||
|
|
if align in ("baseline", "left", "bottom"):
|
||
|
|
x_height = 0
|
||
|
|
elif align in ("right", "top"):
|
||
|
|
x_height = x2 - x1
|
||
|
|
elif align == "center":
|
||
|
|
x_height = (x2 - x1) / 2
|
||
|
|
# x-offsets, y-offsets
|
||
|
|
assert_allclose([child.get_offset() for child in vpacker.get_children()],
|
||
|
|
[(px + x_height, py), (px, py - y2)])
|
||
|
|
|
||
|
|
|
||
|
|
def test_paddedbox_default_values():
|
||
|
|
# smoke test paddedbox for correct default value
|
||
|
|
fig, ax = plt.subplots()
|
||
|
|
at = AnchoredText("foo", 'upper left')
|
||
|
|
pb = PaddedBox(at, patch_attrs={'facecolor': 'r'}, draw_frame=True)
|
||
|
|
ax.add_artist(pb)
|
||
|
|
fig.draw_without_rendering()
|
||
|
|
|
||
|
|
|
||
|
|
def test_annotationbbox_properties():
|
||
|
|
ab = AnnotationBbox(DrawingArea(20, 20, 0, 0, clip=True), (0.5, 0.5),
|
||
|
|
xycoords='data')
|
||
|
|
assert ab.xyann == (0.5, 0.5) # xy if xybox not given
|
||
|
|
assert ab.anncoords == 'data' # xycoords if boxcoords not given
|
||
|
|
|
||
|
|
ab = AnnotationBbox(DrawingArea(20, 20, 0, 0, clip=True), (0.5, 0.5),
|
||
|
|
xybox=(-0.2, 0.4), xycoords='data',
|
||
|
|
boxcoords='axes fraction')
|
||
|
|
assert ab.xyann == (-0.2, 0.4) # xybox if given
|
||
|
|
assert ab.anncoords == 'axes fraction' # boxcoords if given
|
||
|
|
|
||
|
|
|
||
|
|
def test_textarea_properties():
|
||
|
|
ta = TextArea('Foo')
|
||
|
|
assert ta.get_text() == 'Foo'
|
||
|
|
assert not ta.get_multilinebaseline()
|
||
|
|
|
||
|
|
ta.set_text('Bar')
|
||
|
|
ta.set_multilinebaseline(True)
|
||
|
|
assert ta.get_text() == 'Bar'
|
||
|
|
assert ta.get_multilinebaseline()
|
||
|
|
|
||
|
|
|
||
|
|
@check_figures_equal()
|
||
|
|
def test_textarea_set_text(fig_test, fig_ref):
|
||
|
|
ax_ref = fig_ref.add_subplot()
|
||
|
|
text0 = AnchoredText("Foo", "upper left")
|
||
|
|
ax_ref.add_artist(text0)
|
||
|
|
|
||
|
|
ax_test = fig_test.add_subplot()
|
||
|
|
text1 = AnchoredText("Bar", "upper left")
|
||
|
|
ax_test.add_artist(text1)
|
||
|
|
text1.txt.set_text("Foo")
|
||
|
|
|
||
|
|
|
||
|
|
@image_comparison(['paddedbox.png'], remove_text=True, style='mpl20')
|
||
|
|
def test_paddedbox():
|
||
|
|
fig, ax = plt.subplots()
|
||
|
|
|
||
|
|
ta = TextArea("foo")
|
||
|
|
pb = PaddedBox(ta, pad=5, patch_attrs={'facecolor': 'r'}, draw_frame=True)
|
||
|
|
ab = AnchoredOffsetbox('upper left', child=pb)
|
||
|
|
ax.add_artist(ab)
|
||
|
|
|
||
|
|
ta = TextArea("bar")
|
||
|
|
pb = PaddedBox(ta, pad=10, patch_attrs={'facecolor': 'b'})
|
||
|
|
ab = AnchoredOffsetbox('upper right', child=pb)
|
||
|
|
ax.add_artist(ab)
|
||
|
|
|
||
|
|
ta = TextArea("foobar")
|
||
|
|
pb = PaddedBox(ta, pad=15, draw_frame=True)
|
||
|
|
ab = AnchoredOffsetbox('lower right', child=pb)
|
||
|
|
ax.add_artist(ab)
|
||
|
|
|
||
|
|
|
||
|
|
def test_remove_draggable():
|
||
|
|
fig, ax = plt.subplots()
|
||
|
|
an = ax.annotate("foo", (.5, .5))
|
||
|
|
an.draggable(True)
|
||
|
|
an.remove()
|
||
|
|
MouseEvent("button_release_event", fig.canvas, 1, 1)._process()
|