478 lines
17 KiB
Python
478 lines
17 KiB
Python
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from types import SimpleNamespace
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import matplotlib.widgets as widgets
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import matplotlib.pyplot as plt
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from matplotlib.testing.decorators import image_comparison
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from numpy.testing import assert_allclose
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import pytest
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def get_ax():
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fig, ax = plt.subplots(1, 1)
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ax.plot([0, 200], [0, 200])
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ax.set_aspect(1.0)
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ax.figure.canvas.draw()
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return ax
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def do_event(tool, etype, button=1, xdata=0, ydata=0, key=None, step=1):
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"""
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*name*
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the event name
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*canvas*
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the FigureCanvas instance generating the event
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*guiEvent*
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the GUI event that triggered the matplotlib event
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*x*
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x position - pixels from left of canvas
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*y*
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y position - pixels from bottom of canvas
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*inaxes*
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the :class:`~matplotlib.axes.Axes` instance if mouse is over axes
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*xdata*
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x coord of mouse in data coords
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*ydata*
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y coord of mouse in data coords
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*button*
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button pressed None, 1, 2, 3, 'up', 'down' (up and down are used
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for scroll events)
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*key*
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the key depressed when the mouse event triggered (see
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:class:`KeyEvent`)
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*step*
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number of scroll steps (positive for 'up', negative for 'down')
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"""
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event = SimpleNamespace()
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event.button = button
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ax = tool.ax
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event.x, event.y = ax.transData.transform([(xdata, ydata),
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(xdata, ydata)])[00]
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event.xdata, event.ydata = xdata, ydata
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event.inaxes = ax
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event.canvas = ax.figure.canvas
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event.key = key
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event.step = step
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event.guiEvent = None
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event.name = 'Custom'
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func = getattr(tool, etype)
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func(event)
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def check_rectangle(**kwargs):
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ax = get_ax()
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def onselect(epress, erelease):
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ax._got_onselect = True
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assert epress.xdata == 100
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assert epress.ydata == 100
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assert erelease.xdata == 199
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assert erelease.ydata == 199
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tool = widgets.RectangleSelector(ax, onselect, **kwargs)
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do_event(tool, 'press', xdata=100, ydata=100, button=1)
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do_event(tool, 'onmove', xdata=199, ydata=199, button=1)
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# purposely drag outside of axis for release
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do_event(tool, 'release', xdata=250, ydata=250, button=1)
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if kwargs.get('drawtype', None) not in ['line', 'none']:
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assert_allclose(tool.geometry,
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[[100., 100, 199, 199, 100],
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[100, 199, 199, 100, 100]],
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err_msg=tool.geometry)
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assert ax._got_onselect
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def test_rectangle_selector():
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check_rectangle()
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check_rectangle(drawtype='line', useblit=False)
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check_rectangle(useblit=True, button=1)
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check_rectangle(drawtype='none', minspanx=10, minspany=10)
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check_rectangle(minspanx=10, minspany=10, spancoords='pixels')
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check_rectangle(rectprops=dict(fill=True))
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def test_ellipse():
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"""For ellipse, test out the key modifiers"""
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ax = get_ax()
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def onselect(epress, erelease):
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pass
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tool = widgets.EllipseSelector(ax, onselect=onselect,
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maxdist=10, interactive=True)
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tool.extents = (100, 150, 100, 150)
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# drag the rectangle
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do_event(tool, 'press', xdata=10, ydata=10, button=1,
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key=' ')
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do_event(tool, 'onmove', xdata=30, ydata=30, button=1)
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do_event(tool, 'release', xdata=30, ydata=30, button=1)
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assert tool.extents == (120, 170, 120, 170)
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# create from center
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do_event(tool, 'on_key_press', xdata=100, ydata=100, button=1,
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key='control')
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do_event(tool, 'press', xdata=100, ydata=100, button=1)
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do_event(tool, 'onmove', xdata=125, ydata=125, button=1)
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do_event(tool, 'release', xdata=125, ydata=125, button=1)
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do_event(tool, 'on_key_release', xdata=100, ydata=100, button=1,
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key='control')
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assert tool.extents == (75, 125, 75, 125)
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# create a square
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do_event(tool, 'on_key_press', xdata=10, ydata=10, button=1,
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key='shift')
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do_event(tool, 'press', xdata=10, ydata=10, button=1)
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do_event(tool, 'onmove', xdata=35, ydata=30, button=1)
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do_event(tool, 'release', xdata=35, ydata=30, button=1)
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do_event(tool, 'on_key_release', xdata=10, ydata=10, button=1,
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key='shift')
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extents = [int(e) for e in tool.extents]
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assert extents == [10, 35, 10, 34]
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# create a square from center
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do_event(tool, 'on_key_press', xdata=100, ydata=100, button=1,
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key='ctrl+shift')
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do_event(tool, 'press', xdata=100, ydata=100, button=1)
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do_event(tool, 'onmove', xdata=125, ydata=130, button=1)
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do_event(tool, 'release', xdata=125, ydata=130, button=1)
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do_event(tool, 'on_key_release', xdata=100, ydata=100, button=1,
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key='ctrl+shift')
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extents = [int(e) for e in tool.extents]
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assert extents == [70, 129, 70, 130]
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assert tool.geometry.shape == (2, 73)
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assert_allclose(tool.geometry[:, 0], [70., 100])
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def test_rectangle_handles():
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ax = get_ax()
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def onselect(epress, erelease):
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pass
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tool = widgets.RectangleSelector(ax, onselect=onselect,
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maxdist=10, interactive=True)
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tool.extents = (100, 150, 100, 150)
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assert tool.corners == (
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(100, 150, 150, 100), (100, 100, 150, 150))
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assert tool.extents == (100, 150, 100, 150)
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assert tool.edge_centers == (
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(100, 125.0, 150, 125.0), (125.0, 100, 125.0, 150))
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assert tool.extents == (100, 150, 100, 150)
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# grab a corner and move it
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do_event(tool, 'press', xdata=100, ydata=100)
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do_event(tool, 'onmove', xdata=120, ydata=120)
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do_event(tool, 'release', xdata=120, ydata=120)
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assert tool.extents == (120, 150, 120, 150)
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# grab the center and move it
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do_event(tool, 'press', xdata=132, ydata=132)
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do_event(tool, 'onmove', xdata=120, ydata=120)
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do_event(tool, 'release', xdata=120, ydata=120)
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assert tool.extents == (108, 138, 108, 138)
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# create a new rectangle
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do_event(tool, 'press', xdata=10, ydata=10)
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do_event(tool, 'onmove', xdata=100, ydata=100)
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do_event(tool, 'release', xdata=100, ydata=100)
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assert tool.extents == (10, 100, 10, 100)
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def check_span(*args, **kwargs):
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ax = get_ax()
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def onselect(vmin, vmax):
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ax._got_onselect = True
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assert vmin == 100
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assert vmax == 150
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def onmove(vmin, vmax):
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assert vmin == 100
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assert vmax == 125
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ax._got_on_move = True
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if 'onmove_callback' in kwargs:
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kwargs['onmove_callback'] = onmove
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tool = widgets.SpanSelector(ax, onselect, *args, **kwargs)
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do_event(tool, 'press', xdata=100, ydata=100, button=1)
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do_event(tool, 'onmove', xdata=125, ydata=125, button=1)
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do_event(tool, 'release', xdata=150, ydata=150, button=1)
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assert ax._got_onselect
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if 'onmove_callback' in kwargs:
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assert ax._got_on_move
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def test_span_selector():
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check_span('horizontal', minspan=10, useblit=True)
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check_span('vertical', onmove_callback=True, button=1)
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check_span('horizontal', rectprops=dict(fill=True))
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def check_lasso_selector(**kwargs):
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ax = get_ax()
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def onselect(verts):
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ax._got_onselect = True
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assert verts == [(100, 100), (125, 125), (150, 150)]
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tool = widgets.LassoSelector(ax, onselect, **kwargs)
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do_event(tool, 'press', xdata=100, ydata=100, button=1)
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do_event(tool, 'onmove', xdata=125, ydata=125, button=1)
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do_event(tool, 'release', xdata=150, ydata=150, button=1)
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assert ax._got_onselect
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def test_lasso_selector():
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check_lasso_selector()
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check_lasso_selector(useblit=False, lineprops=dict(color='red'))
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check_lasso_selector(useblit=True, button=1)
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def test_CheckButtons():
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ax = get_ax()
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check = widgets.CheckButtons(ax, ('a', 'b', 'c'), (True, False, True))
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assert check.get_status() == [True, False, True]
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check.set_active(0)
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assert check.get_status() == [False, False, True]
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cid = check.on_clicked(lambda: None)
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check.disconnect(cid)
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@image_comparison(['check_radio_buttons.png'], style='mpl20', remove_text=True)
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def test_check_radio_buttons_image():
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# Remove this line when this test image is regenerated.
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plt.rcParams['text.kerning_factor'] = 6
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get_ax()
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plt.subplots_adjust(left=0.3)
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rax1 = plt.axes([0.05, 0.7, 0.15, 0.15])
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rax2 = plt.axes([0.05, 0.2, 0.15, 0.15])
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widgets.RadioButtons(rax1, ('Radio 1', 'Radio 2', 'Radio 3'))
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widgets.CheckButtons(rax2, ('Check 1', 'Check 2', 'Check 3'),
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(False, True, True))
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@image_comparison(['check_bunch_of_radio_buttons.png'],
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style='mpl20', remove_text=True)
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def test_check_bunch_of_radio_buttons():
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rax = plt.axes([0.05, 0.1, 0.15, 0.7])
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widgets.RadioButtons(rax, ('B1', 'B2', 'B3', 'B4', 'B5', 'B6',
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'B7', 'B8', 'B9', 'B10', 'B11', 'B12',
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'B13', 'B14', 'B15'))
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def test_slider_slidermin_slidermax_invalid():
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fig, ax = plt.subplots()
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# test min/max with floats
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with pytest.raises(ValueError):
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widgets.Slider(ax=ax, label='', valmin=0.0, valmax=24.0,
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slidermin=10.0)
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with pytest.raises(ValueError):
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widgets.Slider(ax=ax, label='', valmin=0.0, valmax=24.0,
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slidermax=10.0)
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def test_slider_slidermin_slidermax():
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fig, ax = plt.subplots()
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slider_ = widgets.Slider(ax=ax, label='', valmin=0.0, valmax=24.0,
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valinit=5.0)
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slider = widgets.Slider(ax=ax, label='', valmin=0.0, valmax=24.0,
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valinit=1.0, slidermin=slider_)
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assert slider.val == slider_.val
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slider = widgets.Slider(ax=ax, label='', valmin=0.0, valmax=24.0,
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valinit=10.0, slidermax=slider_)
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assert slider.val == slider_.val
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def test_slider_valmin_valmax():
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fig, ax = plt.subplots()
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slider = widgets.Slider(ax=ax, label='', valmin=0.0, valmax=24.0,
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valinit=-10.0)
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assert slider.val == slider.valmin
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slider = widgets.Slider(ax=ax, label='', valmin=0.0, valmax=24.0,
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valinit=25.0)
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assert slider.val == slider.valmax
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def test_slider_horizontal_vertical():
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fig, ax = plt.subplots()
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slider = widgets.Slider(ax=ax, label='', valmin=0, valmax=24,
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valinit=12, orientation='horizontal')
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slider.set_val(10)
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assert slider.val == 10
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# check the dimension of the slider patch in axes units
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box = slider.poly.get_extents().transformed(ax.transAxes.inverted())
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assert_allclose(box.bounds, [0, 0, 10/24, 1])
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fig, ax = plt.subplots()
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slider = widgets.Slider(ax=ax, label='', valmin=0, valmax=24,
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valinit=12, orientation='vertical')
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slider.set_val(10)
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assert slider.val == 10
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# check the dimension of the slider patch in axes units
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box = slider.poly.get_extents().transformed(ax.transAxes.inverted())
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assert_allclose(box.bounds, [0, 0, 1, 10/24])
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def check_polygon_selector(event_sequence, expected_result, selections_count):
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"""Helper function to test Polygon Selector
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Parameters
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----------
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event_sequence : list of tuples (etype, dict())
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A sequence of events to perform. The sequence is a list of tuples
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where the first element of the tuple is an etype (e.g., 'onmove',
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'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)
|