def test_auto_contrast_buttons(qtbot):
layer = Image(np.arange(8**3).reshape(8, 8, 8), contrast_limits=(0, 1))
qtctrl = QtImageControls(layer)
qtbot.addWidget(qtctrl)
assert layer.contrast_limits == [0, 1]
qtctrl.autoScaleBar._once_btn.click()
assert layer.contrast_limits == [0, 63]
# change slice
layer._slice_dims((1, 8, 8))
# hasn't changed yet
assert layer.contrast_limits == [0, 63]
# with auto_btn, it should always change
qtctrl.autoScaleBar._auto_btn.click()
assert layer.contrast_limits == [64, 127]
layer._slice_dims((2, 8, 8))
assert layer.contrast_limits == [128, 191]
layer._slice_dims((3, 8, 8))
assert layer.contrast_limits == [192, 255]
# once button turns off continuous
qtctrl.autoScaleBar._once_btn.click()
layer._slice_dims((4, 8, 8))
assert layer.contrast_limits == [192, 255]
def test_plane_slider_value_change(qtbot):
"""Changing the model should update the view."""
layer = Image(np.random.rand(10, 15, 20))
qtctrl = QtImageControls(layer)
qtbot.addWidget(qtctrl)
layer.plane.thickness *= 2
assert qtctrl.planeThicknessSlider.value() == layer.plane.thickness
def test_interpolation_combobox(qtbot):
"""Changing the model attribute should update the view"""
layer = Image(np.random.rand(8, 8))
qtctrl = QtImageControls(layer)
qtbot.addWidget(qtctrl)
combo = qtctrl.interpComboBox
opts = {combo.itemText(i) for i in range(combo.count())}
assert opts == {'bicubic', 'bilinear', 'kaiser', 'nearest', 'spline36'}
# programmatically adding approved interpolation works
layer.interpolation = 'lanczos'
assert combo.findText('lanczos') == 5
def test_plane_controls_show_hide_on_ndisplay_change(qtbot):
"""Changing ndisplay should show/hide plane controls if depicting a plane."""
layer = Image(np.random.rand(10, 15, 20))
qtctrl = QtImageControls(layer)
qtbot.addWidget(qtctrl)
layer._slice_dims(ndisplay=3)
layer.depiction = 'plane'
assert not qtctrl.planeControls.isHidden() # isVisible() != not isHidden()
layer._slice_dims(ndisplay=2)
assert qtctrl.planeControls.isHidden()
def test_depiction_combobox_changes(qtbot):
"""Changing the model attribute should update the view."""
layer = Image(np.random.rand(10, 15, 20))
layer._slice_dims(ndisplay=3)
qtctrl = QtImageControls(layer)
qtbot.addWidget(qtctrl)
combo_box = qtctrl.depictionComboBox
opts = {combo_box.itemText(i) for i in range(combo_box.count())}
depiction_options = {
'volume',
'plane',
}
assert opts == depiction_options
layer.depiction = 'plane'
assert combo_box.findText('plane') == combo_box.currentIndex()
layer.depiction = 'volume'
assert combo_box.findText('volume') == combo_box.currentIndex()
def test_plane_controls_show_hide_on_ndisplay_change(qtbot):
"""Changing ndisplay should show/hide plane controls if depicting a plane."""
layer = Image(np.random.rand(10, 15, 20))
qtctrl = QtImageControls(layer)
qtbot.addWidget(qtctrl)
layer._slice_dims(ndisplay=3)
layer.depiction = 'plane'
assert not qtctrl.planeThicknessSlider.isHidden()
assert not qtctrl.planeThicknessLabel.isHidden()
assert not qtctrl.planeNormalButtons.isHidden()
assert not qtctrl.planeNormalLabel.isHidden()
layer._slice_dims(ndisplay=2)
assert qtctrl.planeThicknessSlider.isHidden()
assert qtctrl.planeThicknessLabel.isHidden()
assert qtctrl.planeNormalButtons.isHidden()
assert qtctrl.planeNormalLabel.isHidden()
def test_rendering_combobox(qtbot):
"""Changing the model attribute should update the view"""
layer = Image(np.random.rand(8, 8))
qtctrl = QtImageControls(layer)
qtbot.addWidget(qtctrl)
combo = qtctrl.renderComboBox
opts = {combo.itemText(i) for i in range(combo.count())}
rendering_options = {
'translucent',
'additive',
'iso',
'mip',
'minip',
'attenuated_mip',
'average',
}
assert opts == rendering_options
# programmatically updating rendering mode updates the combobox
layer.rendering = 'iso'
assert combo.findText('iso') == combo.currentIndex()
