document how to extend length of labels

Original title: selectionrangeslider: too short, cuts off labels

import pandas as pd
import datetime
import ipywidgets as widgets

start = datetime.datetime(2017,1,1)
end = datetime.datetime(2017,12,31)

dates = list(pd.date_range(start, end, freq='D'))
options = [(i.strftime('%d.%m.%Y'), i) for i in dates]
index = (0, len(dates)-1)
widgets.SelectionRangeSlider(
    options = options,
    index = index,
    description = 'Test',
    orientation = 'horizontal'
)

The widget is displayed as

The last part of the end date is incorrectly cut off.

Same problem if slider is oriented vertical.

ipywidgets.__version__ is 7.0.1 and jupyter-notebook --version is 5.2.0.

Is there some workaraound? Thanks!

[alfredo-gimenez]

Unfortunately this fix doesn’t work for me–looks like the width of the slider occupies a fixed percentage of the layout width, so with a long enough string it still gets cut off.

Alternatively, is there a way to put the range values below the slider?

[pbugnion]

Thanks for raising this.

A workaround for this would be to specify an absolute width for the slider:

widgets.SelectionRangeSlider(
    options=options,
    index=index,
    description='Test',
    orientation='horizontal',
    layout={'width': '500px'}
)

Beyond workarounds, I am not sure if expanding the label size depending on the options was part of the design. I could see that getting very tricky if the label strings have very different lengths.