def test_change_properties_updates_node_strings():
points = np.random.rand(3, 2)
properties = {'class': np.array(['A', 'B', 'C'])}
layer = Points(points, properties=properties, text='class')
vispy_layer = VispyPointsLayer(layer)
text_node = vispy_layer._get_text_node()
np.testing.assert_array_equal(text_node.text, ['A', 'B', 'C'])
layer.properties = {'class': np.array(['D', 'E', 'F'])}
np.testing.assert_array_equal(text_node.text, ['D', 'E', 'F'])
def test_text_with_non_empty_constant_string():
points = np.random.rand(3, 2)
layer = Points(points, text={'string': {'constant': 'a'}})
vispy_layer = VispyPointsLayer(layer)
text_node = vispy_layer._get_text_node()
# Vispy cannot broadcast a constant string and assert_array_equal
# automatically broadcasts, so explicitly check length.
assert len(text_node.text) == 3
np.testing.assert_array_equal(text_node.text, ['a', 'a', 'a'])
def test_update_property_value_then_refresh_text_updates_node_strings():
points = np.random.rand(3, 2)
properties = {'class': np.array(['A', 'B', 'C'])}
layer = Points(points, properties=properties, text='class')
vispy_layer = VispyPointsLayer(layer)
text_node = vispy_layer._get_text_node()
np.testing.assert_array_equal(text_node.text, ['A', 'B', 'C'])
layer.properties['class'][1] = 'D'
layer.refresh_text()
np.testing.assert_array_equal(text_node.text, ['A', 'D', 'C'])
def test_change_text_color_updates_node_color():
points = np.random.rand(3, 2)
properties = {'class': np.array(['A', 'B', 'C'])}
text = {'text': 'class', 'color': [1, 0, 0]}
layer = Points(points, text=text, properties=properties)
vispy_layer = VispyPointsLayer(layer)
text_node = vispy_layer._get_text_node()
np.testing.assert_array_equal(text_node.color.rgb, [[1, 0, 0]])
layer.text.color = [0, 0, 1]
np.testing.assert_array_equal(text_node.color.rgb, [[0, 0, 1]])
def test_remove_selected_with_derived_text():
"""See https://github.com/napari/napari/issues/3504"""
points = np.random.rand(3, 2)
properties = {'class': np.array(['A', 'B', 'C'])}
layer = Points(points, text='class', properties=properties)
vispy_layer = VispyPointsLayer(layer)
text_node = vispy_layer._get_text_node()
np.testing.assert_array_equal(text_node.text, ['A', 'B', 'C'])
layer.selected_data = {1}
layer.remove_selected()
np.testing.assert_array_equal(text_node.text, ['A', 'C'])
def test_change_canvas_size_limits():
points = np.random.rand(3, 2)
layer = Points(points)
vispy_layer = VispyPointsLayer(layer)
filter = vispy_layer.node.clamp_filter
assert filter.min_size == 0
assert filter.max_size == 10000
layer.experimental_canvas_size_limits = (20, 80)
assert filter.min_size == 20
assert filter.max_size == 80
def test_VispyPointsLayer(opacity):
points = np.array([[100, 100], [200, 200], [300, 100]])
layer = Points(points, size=30, opacity=opacity)
visual = VispyPointsLayer(layer)
assert visual.node.opacity == opacity