def test_adding_layers(qtbot):
"""
Test adding layers.
"""
layers = LayerList()
view = QtLayerList(layers)
qtbot.addWidget(view)
# Check that new layer and divider get added to vbox_layout
layer_a = Image(np.random.random((10, 10)))
layers.append(layer_a)
assert view.vbox_layout.count() == 2 * (len(layers) + 1)
assert check_layout_layers(view.vbox_layout, layers)
assert check_layout_dividers(view.vbox_layout, len(layers))
# Check that new layers and dividers get added to vbox_layout
layer_b = Image(np.random.random((15, 15)))
layer_c = Image(np.random.random((15, 15)))
layer_d = Image(np.random.random((15, 15)))
layers.append(layer_b)
layers.append(layer_c)
layers.append(layer_d)
assert view.vbox_layout.count() == 2 * (len(layers) + 1)
assert check_layout_layers(view.vbox_layout, layers)
assert check_layout_dividers(view.vbox_layout, len(layers))
def test_reordering_layers(qtbot):
"""
Test reordering layers.
"""
layers = LayerList()
view = QtLayerList(layers)
qtbot.addWidget(view)
layer_a = Image(np.random.random((10, 10)), name='image_a')
layer_b = Image(np.random.random((15, 15)), name='image_b')
layer_c = Image(np.random.random((15, 15)), name='image_c')
layer_d = Image(np.random.random((15, 15)), name='image_d')
layers.append(layer_a)
layers.append(layer_b)
layers.append(layer_c)
layers.append(layer_d)
# Check layout and layers list match after rearranging layers
layers[:] = [layers[i] for i in (1, 0, 3, 2)]
assert view.vbox_layout.count() == 2 * (len(layers) + 1)
assert check_layout_layers(view.vbox_layout, layers)
assert check_layout_dividers(view.vbox_layout, len(layers))
# Do another reorder and check layout and layers list match
# after swapping layers again
layers[:] = [layers[i] for i in (1, 0, 3, 2)]
assert view.vbox_layout.count() == 2 * (len(layers) + 1)
assert check_layout_layers(view.vbox_layout, layers)
assert check_layout_dividers(view.vbox_layout, len(layers))
# Check layout and layers list match after reversing list
layers.reverse()
assert view.vbox_layout.count() == 2 * (len(layers) + 1)
assert check_layout_layers(view.vbox_layout, layers)
assert check_layout_dividers(view.vbox_layout, len(layers))
# Check layout and layers list match after rearranging selected layers
layer_e = Image(np.random.random((15, 15)))
layer_f = Image(np.random.random((15, 15)))
layers.append(layer_e)
layers.append(layer_f)
for layer, s in zip(layers, [False, True, False, False, True, False]):
layer.selected = s
layers.move_selected(1, 2)
assert view.vbox_layout.count() == 2 * (len(layers) + 1)
assert check_layout_layers(view.vbox_layout, layers)
assert check_layout_dividers(view.vbox_layout, len(layers))
def test_creating_empty_view(qtbot):
"""
Test creating LayerList view.
"""
layers = LayerList()
view = QtLayerList(layers)
qtbot.addWidget(view)
# Check that the layers model has been appended to the layers view
assert view.layers == layers
# Check that vbox_layout only contains one QtDivider and one spacer
assert view.vbox_layout.count() == 2
assert check_layout_layers(view.vbox_layout, layers)
assert check_layout_dividers(view.vbox_layout, 0)
def test_clearing_layerlist(qtbot):
"""Test clearing layer list."""
layers = LayerList()
view = QtLayerList(layers)
qtbot.addWidget(view)
layers.extend([Image(np.random.random((15, 15))) for _ in range(4)])
assert view.vbox_layout.count() == 2 * (len(layers) + 1)
assert check_layout_layers(view.vbox_layout, layers)
assert check_layout_dividers(view.vbox_layout, len(layers))
layers.clear()
assert len(layers) == 0
assert view.vbox_layout.count() == 2 * (len(layers) + 1)
assert check_layout_layers(view.vbox_layout, layers)
assert check_layout_dividers(view.vbox_layout, len(layers))
def test_removing_layers(qtbot):
"""
Test removing layers.
"""
layers = LayerList()
view = QtLayerList(layers)
qtbot.addWidget(view)
layer_a = Image(np.random.random((10, 10)))
layer_b = Image(np.random.random((15, 15)))
layer_c = Image(np.random.random((15, 15)))
layer_d = Image(np.random.random((15, 15)))
layers.append(layer_a)
layers.append(layer_b)
layers.append(layer_c)
layers.append(layer_d)
# Check layout and layers list match after removing a layer
layers.remove(layer_b)
assert view.vbox_layout.count() == 2 * (len(layers) + 1)
assert check_layout_layers(view.vbox_layout, layers)
assert check_layout_dividers(view.vbox_layout, len(layers))
# Check layout and layers list match after removing a layer
layers.remove(layer_d)
assert view.vbox_layout.count() == 2 * (len(layers) + 1)
assert check_layout_layers(view.vbox_layout, layers)
assert check_layout_dividers(view.vbox_layout, len(layers))
layers.append(layer_b)
layers.append(layer_d)
# Select first and third layers
for layer, s in zip(layers, [True, True, False, False]):
layer.selected = s
layers.remove_selected()
assert view.vbox_layout.count() == 2 * (len(layers) + 1)
assert check_layout_layers(view.vbox_layout, layers)
assert check_layout_dividers(view.vbox_layout, len(layers))