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test_widgets.py
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import matplotlib.widgets as widgets import matplotlib.pyplot as plt from matplotlib.testing.decorators import image_comparison from matplotlib.testing.widgets import do_event, get_ax from numpy.testing import assert_allclose import pytest def check_rectangle(**kwargs): ax = get_ax() def onselect(epress, erelease): ax._got_onselect = True assert epress.xdata == 100 assert epress.ydata == 100 assert erelease.xdata == 199 assert erelease.ydata == 199 tool = widgets.RectangleSelector(ax, onselect, **kwargs) do_event(tool, 'press', xdata=100, ydata=100, button=1) do_event(tool, 'onmove', xdata=199, ydata=199, button=1) # purposely drag outside of axis for release do_event(tool, 'release', xdata=250, ydata=250, button=1) if kwargs.get('drawtype', None) not in ['line', 'none']: assert_allclose(tool.geometry, [[100., 100, 199, 199, 100], [100, 199, 199, 100, 100]], err_msg=tool.geometry) assert ax._got_onselect def test_rectangle_selector(): check_rectangle() check_rectangle(drawtype='line', useblit=False) check_rectangle(useblit=True, button=1) check_rectangle(drawtype='none', minspanx=10, minspany=10) check_rectangle(minspanx=10, minspany=10, spancoords='pixels') check_rectangle(rectprops=dict(fill=True)) def test_ellipse(): """For ellipse, test out the key modifiers""" ax = get_ax() def onselect(epress, erelease): pass tool = widgets.EllipseSelector(ax, onselect=onselect, maxdist=10, interactive=True) tool.extents = (100, 150, 100, 150) # drag the rectangle do_event(tool, 'press', xdata=10, ydata=10, button=1, key=' ') do_event(tool, 'onmove', xdata=30, ydata=30, button=1) do_event(tool, 'release', xdata=30, ydata=30, button=1) assert tool.extents == (120, 170, 120, 170) # create from center do_event(tool, 'on_key_press', xdata=100, ydata=100, button=1, key='control') do_event(tool, 'press', xdata=100, ydata=100, button=1) do_event(tool, 'onmove', xdata=125, ydata=125, button=1) do_event(tool, 'release', xdata=125, ydata=125, button=1) do_event(tool, 'on_key_release', xdata=100, ydata=100, button=1, key='control') assert tool.extents == (75, 125, 75, 125) # create a square do_event(tool, 'on_key_press', xdata=10, ydata=10, button=1, key='shift') do_event(tool, 'press', xdata=10, ydata=10, button=1) do_event(tool, 'onmove', xdata=35, ydata=30, button=1) do_event(tool, 'release', xdata=35, ydata=30, button=1) do_event(tool, 'on_key_release', xdata=10, ydata=10, button=1, key='shift') extents = [int(e) for e in tool.extents] assert extents == [10, 35, 10, 34] # create a square from center do_event(tool, 'on_key_press', xdata=100, ydata=100, button=1, key='ctrl+shift') do_event(tool, 'press', xdata=100, ydata=100, button=1) do_event(tool, 'onmove', xdata=125, ydata=130, button=1) do_event(tool, 'release', xdata=125, ydata=130, button=1) do_event(tool, 'on_key_release', xdata=100, ydata=100, button=1, key='ctrl+shift') extents = [int(e) for e in tool.extents] assert extents == [70, 129, 70, 130] assert tool.geometry.shape == (2, 73) assert_allclose(tool.geometry[:, 0], [70., 100]) def test_rectangle_handles(): ax = get_ax() def onselect(epress, erelease): pass tool = widgets.RectangleSelector(ax, onselect=onselect, maxdist=10, interactive=True) tool.extents = (100, 150, 100, 150) assert tool.corners == ( (100, 150, 150, 100), (100, 100, 150, 150)) assert tool.extents == (100, 150, 100, 150) assert tool.edge_centers == ( (100, 125.0, 150, 125.0), (125.0, 100, 125.0, 150)) assert tool.extents == (100, 150, 100, 150) # grab a corner and move it do_event(tool, 'press', xdata=100, ydata=100) do_event(tool, 'onmove', xdata=120, ydata=120) do_event(tool, 'release', xdata=120, ydata=120) assert tool.extents == (120, 150, 120, 150) # grab the center and move it do_event(tool, 'press', xdata=132, ydata=132) do_event(tool, 'onmove', xdata=120, ydata=120) do_event(tool, 'release', xdata=120, ydata=120) assert tool.extents == (108, 138, 108, 138) # create a new rectangle do_event(tool, 'press', xdata=10, ydata=10) do_event(tool, 'onmove', xdata=100, ydata=100) do_event(tool, 'release', xdata=100, ydata=100) assert tool.extents == (10, 100, 10, 100) def check_span(*args, **kwargs): ax = get_ax() def onselect(vmin, vmax): ax._got_onselect = True assert vmin == 100 assert vmax == 150 def onmove(vmin, vmax): assert vmin == 100 assert vmax == 125 ax._got_on_move = True if 'onmove_callback' in kwargs: kwargs['onmove_callback'] = onmove tool = widgets.SpanSelector(ax, onselect, *args, **kwargs) do_event(tool, 'press', xdata=100, ydata=100, button=1) do_event(tool, 'onmove', xdata=125, ydata=125, button=1) do_event(tool, 'release', xdata=150, ydata=150, button=1) assert ax._got_onselect if 'onmove_callback' in kwargs: assert ax._got_on_move def test_span_selector(): check_span('horizontal', minspan=10, useblit=True) check_span('vertical', onmove_callback=True, button=1) check_span('horizontal', rectprops=dict(fill=True)) def check_lasso_selector(**kwargs): ax = get_ax() def onselect(verts): ax._got_onselect = True assert verts == [(100, 100), (125, 125), (150, 150)] tool = widgets.LassoSelector(ax, onselect, **kwargs) do_event(tool, 'press', xdata=100, ydata=100, button=1) do_event(tool, 'onmove', xdata=125, ydata=125, button=1) do_event(tool, 'release', xdata=150, ydata=150, button=1) assert ax._got_onselect def test_lasso_selector(): check_lasso_selector() check_lasso_selector(useblit=False, lineprops=dict(color='red')) check_lasso_selector(useblit=True, button=1) def test_CheckButtons(): ax = get_ax() check = widgets.CheckButtons(ax, ('a', 'b', 'c'), (True, False, True)) assert check.get_status() == [True, False, True] check.set_active(0) assert check.get_status() == [False, False, True] cid = check.on_clicked(lambda: None) check.disconnect(cid) @image_comparison(['check_radio_buttons.png'], style='mpl20', remove_text=True) def test_check_radio_buttons_image(): # Remove this line when this test image is regenerated. plt.rcParams['text.kerning_factor'] = 6 get_ax() plt.subplots_adjust(left=0.3) rax1 = plt.axes([0.05, 0.7, 0.15, 0.15]) rax2 = plt.axes([0.05, 0.2, 0.15, 0.15]) widgets.RadioButtons(rax1, ('Radio 1', 'Radio 2', 'Radio 3')) widgets.CheckButtons(rax2, ('Check 1', 'Check 2', 'Check 3'), (False, True, True)) @image_comparison(['check_bunch_of_radio_buttons.png'], style='mpl20', remove_text=True) def test_check_bunch_of_radio_buttons(): rax = plt.axes([0.05, 0.1, 0.15, 0.7]) widgets.RadioButtons(rax, ('B1', 'B2', 'B3', 'B4', 'B5', 'B6', 'B7', 'B8', 'B9', 'B10', 'B11', 'B12', 'B13', 'B14', 'B15')) def test_slider_slidermin_slidermax_invalid(): fig, ax = plt.subplots() # test min/max with floats with pytest.raises(ValueError): widgets.Slider(ax=ax, label='', valmin=0.0, valmax=24.0, slidermin=10.0) with pytest.raises(ValueError): widgets.Slider(ax=ax, label='', valmin=0.0, valmax=24.0, slidermax=10.0) def test_slider_slidermin_slidermax(): fig, ax = plt.subplots() slider_ = widgets.Slider(ax=ax, label='', valmin=0.0, valmax=24.0, valinit=5.0) slider = widgets.Slider(ax=ax, label='', valmin=0.0, valmax=24.0, valinit=1.0, slidermin=slider_) assert slider.val == slider_.val slider = widgets.Slider(ax=ax, label='', valmin=0.0, valmax=24.0, valinit=10.0, slidermax=slider_) assert slider.val == slider_.val def test_slider_valmin_valmax(): fig, ax = plt.subplots() slider = widgets.Slider(ax=ax, label='', valmin=0.0, valmax=24.0, valinit=-10.0) assert slider.val == slider.valmin slider = widgets.Slider(ax=ax, label='', valmin=0.0, valmax=24.0, valinit=25.0) assert slider.val == slider.valmax def test_slider_horizontal_vertical(): fig, ax = plt.subplots() slider = widgets.Slider(ax=ax, label='', valmin=0, valmax=24, valinit=12, orientation='horizontal') slider.set_val(10) assert slider.val == 10 # check the dimension of the slider patch in axes units box = slider.poly.get_extents().transformed(ax.transAxes.inverted()) assert_allclose(box.bounds, [0, 0, 10/24, 1]) fig, ax = plt.subplots() slider = widgets.Slider(ax=ax, label='', valmin=0, valmax=24, valinit=12, orientation='vertical') slider.set_val(10) assert slider.val == 10 # check the dimension of the slider patch in axes units box = slider.poly.get_extents().transformed(ax.transAxes.inverted()) assert_allclose(box.bounds, [0, 0, 1, 10/24]) def check_polygon_selector(event_sequence, expected_result, selections_count): """ Helper function to test Polygon Selector. Parameters ---------- event_sequence : list of tuples (etype, dict()) A sequence of events to perform. The sequence is a list of tuples where the first element of the tuple is an etype (e.g., 'onmove', 'press', etc.), and the second element of the tuple is a dictionary of the arguments for the event (e.g., xdata=5, key='shift', etc.). expected_result : list of vertices (xdata, ydata) The list of vertices that are expected to result from the event sequence. selections_count : int Wait for the tool to call its `onselect` function `selections_count` times, before comparing the result to the `expected_result` """ ax = get_ax() ax._selections_count = 0 def onselect(vertices): ax._selections_count += 1 ax._current_result = vertices tool = widgets.PolygonSelector(ax, onselect) for (etype, event_args) in event_sequence: do_event(tool, etype, **event_args) assert ax._selections_count == selections_count assert ax._current_result == expected_result def polygon_place_vertex(xdata, ydata): return [('onmove', dict(xdata=xdata, ydata=ydata)), ('press', dict(xdata=xdata, ydata=ydata)), ('release', dict(xdata=xdata, ydata=ydata))] def test_polygon_selector(): # Simple polygon expected_result = [(50, 50), (150, 50), (50, 150)] event_sequence = (polygon_place_vertex(50, 50) + polygon_place_vertex(150, 50) + polygon_place_vertex(50, 150) + polygon_place_vertex(50, 50)) check_polygon_selector(event_sequence, expected_result, 1) # Move first vertex before completing the polygon. expected_result = [(75, 50), (150, 50), (50, 150)] event_sequence = (polygon_place_vertex(50, 50) + polygon_place_vertex(150, 50) + [('on_key_press', dict(key='control')), ('onmove', dict(xdata=50, ydata=50)), ('press', dict(xdata=50, ydata=50)), ('onmove', dict(xdata=75, ydata=50)), ('release', dict(xdata=75, ydata=50)), ('on_key_release', dict(key='control'))] + polygon_place_vertex(50, 150) + polygon_place_vertex(75, 50)) check_polygon_selector(event_sequence, expected_result, 1) # Move first two vertices at once before completing the polygon. expected_result = [(50, 75), (150, 75), (50, 150)] event_sequence = (polygon_place_vertex(50, 50) + polygon_place_vertex(150, 50) + [('on_key_press', dict(key='shift')), ('onmove', dict(xdata=100, ydata=100)), ('press', dict(xdata=100, ydata=100)), ('onmove', dict(xdata=100, ydata=125)), ('release', dict(xdata=100, ydata=125)), ('on_key_release', dict(key='shift'))] + polygon_place_vertex(50, 150) + polygon_place_vertex(50, 75)) check_polygon_selector(event_sequence, expected_result, 1) # Move first vertex after completing the polygon. expected_result = [(75, 50), (150, 50), (50, 150)] event_sequence = (polygon_place_vertex(50, 50) + polygon_place_vertex(150, 50) + polygon_place_vertex(50, 150) + polygon_place_vertex(50, 50) + [('onmove', dict(xdata=50, ydata=50)), ('press', dict(xdata=50, ydata=50)), ('onmove', dict(xdata=75, ydata=50)), ('release', dict(xdata=75, ydata=50))]) check_polygon_selector(event_sequence, expected_result, 2) # Move all vertices after completing the polygon. expected_result = [(75, 75), (175, 75), (75, 175)] event_sequence = (polygon_place_vertex(50, 50) + polygon_place_vertex(150, 50) + polygon_place_vertex(50, 150) + polygon_place_vertex(50, 50) + [('on_key_press', dict(key='shift')), ('onmove', dict(xdata=100, ydata=100)), ('press', dict(xdata=100, ydata=100)), ('onmove', dict(xdata=125, ydata=125)), ('release', dict(xdata=125, ydata=125)), ('on_key_release', dict(key='shift'))]) check_polygon_selector(event_sequence, expected_result, 2) # Try to move a vertex and move all before placing any vertices. expected_result = [(50, 50), (150, 50), (50, 150)] event_sequence = ([('on_key_press', dict(key='control')), ('onmove', dict(xdata=100, ydata=100)), ('press', dict(xdata=100, ydata=100)), ('onmove', dict(xdata=125, ydata=125)), ('release', dict(xdata=125, ydata=125)), ('on_key_release', dict(key='control')), ('on_key_press', dict(key='shift')), ('onmove', dict(xdata=100, ydata=100)), ('press', dict(xdata=100, ydata=100)), ('onmove', dict(xdata=125, ydata=125)), ('release', dict(xdata=125, ydata=125)), ('on_key_release', dict(key='shift'))] + polygon_place_vertex(50, 50) + polygon_place_vertex(150, 50) + polygon_place_vertex(50, 150) + polygon_place_vertex(50, 50)) check_polygon_selector(event_sequence, expected_result, 1) # Try to place vertex out-of-bounds, then reset, and start a new polygon. expected_result = [(50, 50), (150, 50), (50, 150)] event_sequence = (polygon_place_vertex(50, 50) + polygon_place_vertex(250, 50) + [('on_key_press', dict(key='escape')), ('on_key_release', dict(key='escape'))] + polygon_place_vertex(50, 50) + polygon_place_vertex(150, 50) + polygon_place_vertex(50, 150) + polygon_place_vertex(50, 50)) check_polygon_selector(event_sequence, expected_result, 1)