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Fix RangeSlider for same init values #22686 #22926

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Merged
timhoffm merged 18 commits into from
May 8, 2022
Merged

Fix RangeSlider for same init values #22686 #22926

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4ec62cb
Change creation of vertical polygon for rangeSlider widget
NickolasGiannatos Apr 28, 2022
0024a67
Change creation of horizontal polygon for RangeSlider widget
AnnaMastori Apr 28, 2022
9aa50bf
Fix spaces
NickolasGiannatos Apr 28, 2022
b667cca
Change method that transforms vertical polygon
NickolasGiannatos Apr 29, 2022
4d75927
Refactor RangeSlider __init__ method
NickolasGiannatos May 3, 2022
88e846a
Create method _fill_verts
AnnaMastori May 3, 2022
e1c23d5
Refactor init method of RangeSlider
AnnaMastori May 4, 2022
0c59df8
Change documentation of method _fill_verts
NickolasGiannatos May 4, 2022
7172144
Fix docstring in method _fill_verts
NickolasGiannatos May 4, 2022
2fa1304
Fix docstring indentation in _fill_verts method
NickolasGiannatos May 5, 2022
a830b29
Refactor method set_val
NickolasGiannatos May 5, 2022
bf1346c
Refactor method set_val in RangeSlider
AnnaMastori May 5, 2022
3285c5c
Change method _fill_verts to _update_selection_poly in RangeSlider
AnnaMastori May 6, 2022
1130948
Refactor method set_val in RangeSlider
NickolasGiannatos May 6, 2022
8774b1b
Add case of same init values in test_range_slider
NickolasGiannatos May 6, 2022
306237c
Fix indentation
NickolasGiannatos May 6, 2022
382aed2
Remove test case for same init values from test_range_slider method
AnnaMastori May 7, 2022
4cc82f1
Add test method test_range_slider_same_init_values
AnnaMastori May 7, 2022
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17 changes: 17 additions & 0 deletions lib/matplotlib/tests/test_widgets.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1161,6 +1161,23 @@ def handle_positions(slider):
assert_allclose(handle_positions(slider), (0.1, 0.34))


@pytest.mark.parametrize("orientation", ["horizontal", "vertical"])
def test_range_slider_same_init_values(orientation):
if orientation == "vertical":
idx = [1, 0, 3, 2]
else:
idx = [0, 1, 2, 3]

fig, ax = plt.subplots()

slider = widgets.RangeSlider(
ax=ax, label="", valmin=0.0, valmax=1.0, orientation=orientation,
valinit=[0, 0]
)
box = slider.poly.get_extents().transformed(ax.transAxes.inverted())
assert_allclose(box.get_points().flatten()[idx], [0, 0.25, 0, 0.75])


def check_polygon_selector(event_sequence, expected_result, selections_count,
**kwargs):
"""
Expand Down
67 changes: 41 additions & 26 deletions lib/matplotlib/widgets.py
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Original file line number Diff line number Diff line change
Expand Up @@ -19,7 +19,7 @@
from . import (_api, _docstring, backend_tools, cbook, colors, ticker,
transforms)
from .lines import Line2D
from .patches import Circle, Rectangle, Ellipse
from .patches import Circle, Rectangle, Ellipse, Polygon
from .transforms import TransformedPatchPath, Affine2D


Expand Down Expand Up @@ -709,7 +709,7 @@ def __init__(
facecolor=track_color
)
ax.add_patch(self.track)
self.poly = ax.axhspan(valinit[0], valinit[1], 0, 1, **kwargs)
poly_transform = self.ax.get_yaxis_transform(which="grid")
handleXY_1 = [.5, valinit[0]]
handleXY_2 = [.5, valinit[1]]
else:
Expand All @@ -719,9 +719,15 @@ def __init__(
facecolor=track_color
)
ax.add_patch(self.track)
self.poly = ax.axvspan(valinit[0], valinit[1], 0, 1, **kwargs)
poly_transform = self.ax.get_xaxis_transform(which="grid")
handleXY_1 = [valinit[0], .5]
handleXY_2 = [valinit[1], .5]
self.poly = Polygon(np.zeros([5, 2]), **kwargs)
self._update_selection_poly(*valinit)
self.poly.set_transform(poly_transform)
self.poly.get_path()._interpolation_steps = 100
self.ax.add_patch(self.poly)
self.ax._request_autoscale_view()
self._handles = [
ax.plot(
*handleXY_1,
Expand Down Expand Up @@ -777,6 +783,27 @@ def __init__(
self._active_handle = None
self.set_val(valinit)

def _update_selection_poly(self, vmin, vmax):
"""
Update the vertices of the *self.poly* slider in-place
to cover the data range *vmin*, *vmax*.
"""
# The vertices are positioned
# 1 ------ 2
# | |
# 0, 4 ---- 3
verts = self.poly.xy
if self.orientation == "vertical":
verts[0] = verts[4] = .25, vmin
verts[1] = .25, vmax
verts[2] = .75, vmax
verts[3] = .75, vmin
else:
verts[0] = verts[4] = vmin, .25
verts[1] = vmin, .75
verts[2] = vmax, .75
verts[3] = vmax, .25

def _min_in_bounds(self, min):
"""Ensure the new min value is between valmin and self.val[1]."""
if min <= self.valmin:
Expand Down Expand Up @@ -903,36 +930,24 @@ def set_val(self, val):
"""
val = np.sort(val)
_api.check_shape((2,), val=val)
val[0] = self._min_in_bounds(val[0])
val[1] = self._max_in_bounds(val[1])
xy = self.poly.xy
vmin, vmax = val
vmin = self._min_in_bounds(vmin)
vmax = self._max_in_bounds(vmax)
self._update_selection_poly(vmin, vmax)
if self.orientation == "vertical":
xy[0] = .25, val[0]
xy[1] = .25, val[1]
xy[2] = .75, val[1]
xy[3] = .75, val[0]
xy[4] = .25, val[0]

self._handles[0].set_ydata([val[0]])
self._handles[1].set_ydata([val[1]])
self._handles[0].set_ydata([vmin])
self._handles[1].set_ydata([vmax])
else:
xy[0] = val[0], .25
xy[1] = val[0], .75
xy[2] = val[1], .75
xy[3] = val[1], .25
xy[4] = val[0], .25
self._handles[0].set_xdata([vmin])
self._handles[1].set_xdata([vmax])

self._handles[0].set_xdata([val[0]])
self._handles[1].set_xdata([val[1]])

self.poly.xy = xy
self.valtext.set_text(self._format(val))
self.valtext.set_text(self._format((vmin, vmax)))

if self.drawon:
self.ax.figure.canvas.draw_idle()
self.val = val
self.val = (vmin, vmax)
if self.eventson:
self._observers.process("changed", val)
self._observers.process("changed", (vmin, vmax))

def on_changed(self, func):
"""
Expand Down