1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
|
from importlib.metadata import version
import pytest
import pyqtgraph as pg
from pyqtgraph.exporters import MatplotlibExporter
pytest.importorskip("matplotlib")
import matplotlib
app = pg.mkQApp()
skip_qt6 = pytest.mark.skipif(
# availability of QtAgg signifies Qt6 support
pg.Qt.QT_LIB in ["PySide6", "PyQt6"] and "QtAgg" not in matplotlib.rcsetup.interactive_bk,
reason= (
"installed version of Matplotlib does not support Qt6, "
"see https://github.com/matplotlib/matplotlib/pull/19255"
)
)
# see https://github.com/matplotlib/matplotlib/pull/24172
if (
pg.Qt.QT_LIB == "PySide6"
and tuple(map(int, pg.Qt.PySide6.__version__.split("."))) > (6, 4)
and tuple(map(int, version("matplotlib").split("."))) < (3, 6, 2)
):
pytest.skip(
"matplotlib + PySide6 6.4 bug",
allow_module_level=True
)
@skip_qt6
def test_MatplotlibExporter():
plt = pg.PlotWidget()
plt.show()
# curve item
plt.plot([0, 1, 2], [0, 1, 2])
# scatter item
plt.plot([0, 1, 2], [1, 2, 3], pen=None, symbolBrush='r')
# curve + scatter
plt.plot([0, 1, 2], [2, 3, 4], pen='k', symbolBrush='r')
exp = MatplotlibExporter(plt.getPlotItem())
exp.export()
@skip_qt6
def test_MatplotlibExporter_nonplotitem():
# attempting to export something other than a PlotItem raises an exception
plt = pg.PlotWidget()
plt.show()
plt.plot([0, 1, 2], [2, 3, 4])
exp = MatplotlibExporter(plt.getPlotItem().getViewBox())
with pytest.raises(Exception):
exp.export()
@skip_qt6
@pytest.mark.parametrize('scale', [1e10, 1e-9])
def test_MatplotlibExporter_siscale(scale):
# coarse test to verify that plot data is scaled before export when
# autoSIPrefix is in effect (so mpl doesn't add its own multiplier label)
plt = pg.PlotWidget()
plt.show()
plt.plot([0, 1, 2], [(i+1)*scale for i in range(3)])
# set the label so autoSIPrefix works
plt.setLabel('left', 'magnitude')
exp = MatplotlibExporter(plt.getPlotItem())
exp.export()
mpw = MatplotlibExporter.windows[-1]
fig = mpw.getFigure()
ymin, ymax = fig.axes[0].get_ylim()
if scale < 1:
assert ymax > scale
else:
assert ymax < scale
|
