|
|
"""Float class.
|
|
|
|
|
|
Represents an unbounded float using a widget.
|
|
|
"""
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Copyright (c) 2013, the IPython Development Team.
|
|
|
#
|
|
|
# Distributed under the terms of the Modified BSD License.
|
|
|
#
|
|
|
# The full license is in the file COPYING.txt, distributed with this software.
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Imports
|
|
|
#-----------------------------------------------------------------------------
|
|
|
from .widget import DOMWidget, register
|
|
|
from IPython.utils.traitlets import Unicode, CFloat, Bool, CaselessStrEnum, Tuple
|
|
|
from IPython.utils.warn import DeprecatedClass
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Classes
|
|
|
#-----------------------------------------------------------------------------
|
|
|
class _Float(DOMWidget):
|
|
|
value = CFloat(0.0, help="Float value", sync=True)
|
|
|
disabled = Bool(False, help="Enable or disable user changes", sync=True)
|
|
|
description = Unicode(help="Description of the value this widget represents", sync=True)
|
|
|
|
|
|
def __init__(self, value=None, **kwargs):
|
|
|
if value is not None:
|
|
|
kwargs['value'] = value
|
|
|
super(_Float, self).__init__(**kwargs)
|
|
|
|
|
|
class _BoundedFloat(_Float):
|
|
|
max = CFloat(100.0, help="Max value", sync=True)
|
|
|
min = CFloat(0.0, help="Min value", sync=True)
|
|
|
step = CFloat(0.1, help="Minimum step that the value can take (ignored by some views)", sync=True)
|
|
|
|
|
|
def __init__(self, *pargs, **kwargs):
|
|
|
"""Constructor"""
|
|
|
super(_BoundedFloat, self).__init__(*pargs, **kwargs)
|
|
|
self._validate('value', None, self.value)
|
|
|
self.on_trait_change(self._validate, ['value', 'min', 'max'])
|
|
|
|
|
|
def _validate(self, name, old, new):
|
|
|
"""Validate value, max, min."""
|
|
|
if self.min > new or new > self.max:
|
|
|
self.value = min(max(new, self.min), self.max)
|
|
|
|
|
|
|
|
|
@register('IPython.FloatText')
|
|
|
class FloatText(_Float):
|
|
|
""" Displays a float value within a textbox. For a textbox in
|
|
|
which the value must be within a specific range, use BoundedFloatText.
|
|
|
|
|
|
Parameters
|
|
|
----------
|
|
|
value : float
|
|
|
value displayed
|
|
|
description : str
|
|
|
description displayed next to the textbox
|
|
|
color : str Unicode color code (eg. '#C13535'), optional
|
|
|
color of the value displayed
|
|
|
"""
|
|
|
_view_name = Unicode('FloatTextView', sync=True)
|
|
|
|
|
|
|
|
|
@register('IPython.BoundedFloatText')
|
|
|
class BoundedFloatText(_BoundedFloat):
|
|
|
""" Displays a float value within a textbox. Value must be within the range specified.
|
|
|
For a textbox in which the value doesn't need to be within a specific range, use FloatText.
|
|
|
|
|
|
Parameters
|
|
|
----------
|
|
|
value : float
|
|
|
value displayed
|
|
|
min : float
|
|
|
minimal value of the range of possible values displayed
|
|
|
max : float
|
|
|
maximal value of the range of possible values displayed
|
|
|
description : str
|
|
|
description displayed next to the textbox
|
|
|
color : str Unicode color code (eg. '#C13535'), optional
|
|
|
color of the value displayed
|
|
|
"""
|
|
|
_view_name = Unicode('FloatTextView', sync=True)
|
|
|
|
|
|
|
|
|
@register('IPython.FloatSlider')
|
|
|
class FloatSlider(_BoundedFloat):
|
|
|
""" Slider/trackbar of floating values with the specified range.
|
|
|
|
|
|
Parameters
|
|
|
----------
|
|
|
value : float
|
|
|
position of the slider
|
|
|
min : float
|
|
|
minimal position of the slider
|
|
|
max : float
|
|
|
maximal position of the slider
|
|
|
step : float
|
|
|
step of the trackbar
|
|
|
description : str
|
|
|
name of the slider
|
|
|
orientation : {'vertical', 'horizontal}, optional
|
|
|
default is horizontal
|
|
|
readout : {True, False}, optional
|
|
|
default is True, display the current value of the slider next to it
|
|
|
slider_color : str Unicode color code (eg. '#C13535'), optional
|
|
|
color of the slider
|
|
|
color : str Unicode color code (eg. '#C13535'), optional
|
|
|
color of the value displayed (if readout == True)
|
|
|
"""
|
|
|
_view_name = Unicode('FloatSliderView', sync=True)
|
|
|
orientation = CaselessStrEnum(values=['horizontal', 'vertical'],
|
|
|
default_value='horizontal',
|
|
|
help="Vertical or horizontal.", allow_none=False, sync=True)
|
|
|
_range = Bool(False, help="Display a range selector", sync=True)
|
|
|
readout = Bool(True, help="Display the current value of the slider next to it.", sync=True)
|
|
|
slider_color = Unicode(sync=True)
|
|
|
|
|
|
|
|
|
@register('IPython.FloatProgress')
|
|
|
class FloatProgress(_BoundedFloat):
|
|
|
""" Displays a progress bar.
|
|
|
|
|
|
Parameters
|
|
|
-----------
|
|
|
value : float
|
|
|
position within the range of the progress bar
|
|
|
min : float
|
|
|
minimal position of the slider
|
|
|
max : float
|
|
|
maximal position of the slider
|
|
|
step : float
|
|
|
step of the progress bar
|
|
|
description : str
|
|
|
name of the progress bar
|
|
|
bar_style: {'success', 'info', 'warning', 'danger', ''}, optional
|
|
|
color of the progress bar, default is '' (blue)
|
|
|
colors are: 'success'-green, 'info'-light blue, 'warning'-orange, 'danger'-red
|
|
|
"""
|
|
|
_view_name = Unicode('ProgressView', sync=True)
|
|
|
|
|
|
bar_style = CaselessStrEnum(
|
|
|
values=['success', 'info', 'warning', 'danger', ''],
|
|
|
default_value='', allow_none=True, sync=True, help="""Use a
|
|
|
predefined styling for the progess bar.""")
|
|
|
|
|
|
class _FloatRange(_Float):
|
|
|
value = Tuple(CFloat, CFloat, default_value=(0.0, 1.0), help="Tuple of (lower, upper) bounds", sync=True)
|
|
|
lower = CFloat(0.0, help="Lower bound", sync=False)
|
|
|
upper = CFloat(1.0, help="Upper bound", sync=False)
|
|
|
|
|
|
def __init__(self, *pargs, **kwargs):
|
|
|
value_given = 'value' in kwargs
|
|
|
lower_given = 'lower' in kwargs
|
|
|
upper_given = 'upper' in kwargs
|
|
|
if value_given and (lower_given or upper_given):
|
|
|
raise ValueError("Cannot specify both 'value' and 'lower'/'upper' for range widget")
|
|
|
if lower_given != upper_given:
|
|
|
raise ValueError("Must specify both 'lower' and 'upper' for range widget")
|
|
|
|
|
|
DOMWidget.__init__(self, *pargs, **kwargs)
|
|
|
|
|
|
# ensure the traits match, preferring whichever (if any) was given in kwargs
|
|
|
if value_given:
|
|
|
self.lower, self.upper = self.value
|
|
|
else:
|
|
|
self.value = (self.lower, self.upper)
|
|
|
|
|
|
self.on_trait_change(self._validate, ['value', 'upper', 'lower'])
|
|
|
|
|
|
def _validate(self, name, old, new):
|
|
|
if name == 'value':
|
|
|
self.lower, self.upper = min(new), max(new)
|
|
|
elif name == 'lower':
|
|
|
self.value = (new, self.value[1])
|
|
|
elif name == 'upper':
|
|
|
self.value = (self.value[0], new)
|
|
|
|
|
|
class _BoundedFloatRange(_FloatRange):
|
|
|
step = CFloat(1.0, help="Minimum step that the value can take (ignored by some views)", sync=True)
|
|
|
max = CFloat(100.0, help="Max value", sync=True)
|
|
|
min = CFloat(0.0, help="Min value", sync=True)
|
|
|
|
|
|
def __init__(self, *pargs, **kwargs):
|
|
|
any_value_given = 'value' in kwargs or 'upper' in kwargs or 'lower' in kwargs
|
|
|
_FloatRange.__init__(self, *pargs, **kwargs)
|
|
|
|
|
|
# ensure a minimal amount of sanity
|
|
|
if self.min > self.max:
|
|
|
raise ValueError("min must be <= max")
|
|
|
|
|
|
if any_value_given:
|
|
|
# if a value was given, clamp it within (min, max)
|
|
|
self._validate("value", None, self.value)
|
|
|
else:
|
|
|
# otherwise, set it to 25-75% to avoid the handles overlapping
|
|
|
self.value = (0.75*self.min + 0.25*self.max,
|
|
|
0.25*self.min + 0.75*self.max)
|
|
|
# callback already set for 'value', 'lower', 'upper'
|
|
|
self.on_trait_change(self._validate, ['min', 'max'])
|
|
|
|
|
|
|
|
|
def _validate(self, name, old, new):
|
|
|
if name == "min":
|
|
|
if new > self.max:
|
|
|
raise ValueError("setting min > max")
|
|
|
self.min = new
|
|
|
elif name == "max":
|
|
|
if new < self.min:
|
|
|
raise ValueError("setting max < min")
|
|
|
self.max = new
|
|
|
|
|
|
low, high = self.value
|
|
|
if name == "value":
|
|
|
low, high = min(new), max(new)
|
|
|
elif name == "upper":
|
|
|
if new < self.lower:
|
|
|
raise ValueError("setting upper < lower")
|
|
|
high = new
|
|
|
elif name == "lower":
|
|
|
if new > self.upper:
|
|
|
raise ValueError("setting lower > upper")
|
|
|
low = new
|
|
|
|
|
|
low = max(self.min, min(low, self.max))
|
|
|
high = min(self.max, max(high, self.min))
|
|
|
|
|
|
# determine the order in which we should update the
|
|
|
# lower, upper traits to avoid a temporary inverted overlap
|
|
|
lower_first = high < self.lower
|
|
|
|
|
|
self.value = (low, high)
|
|
|
if lower_first:
|
|
|
self.lower = low
|
|
|
self.upper = high
|
|
|
else:
|
|
|
self.upper = high
|
|
|
self.lower = low
|
|
|
|
|
|
|
|
|
@register('IPython.FloatRangeSlider')
|
|
|
class FloatRangeSlider(_BoundedFloatRange):
|
|
|
""" Slider/trackbar for displaying a floating value range (within the specified range of values).
|
|
|
|
|
|
Parameters
|
|
|
----------
|
|
|
value : float tuple
|
|
|
range of the slider displayed
|
|
|
min : float
|
|
|
minimal position of the slider
|
|
|
max : float
|
|
|
maximal position of the slider
|
|
|
step : float
|
|
|
step of the trackbar
|
|
|
description : str
|
|
|
name of the slider
|
|
|
orientation : {'vertical', 'horizontal}, optional
|
|
|
default is horizontal
|
|
|
readout : {True, False}, optional
|
|
|
default is True, display the current value of the slider next to it
|
|
|
slider_color : str Unicode color code (eg. '#C13535'), optional
|
|
|
color of the slider
|
|
|
color : str Unicode color code (eg. '#C13535'), optional
|
|
|
color of the value displayed (if readout == True)
|
|
|
"""
|
|
|
_view_name = Unicode('FloatSliderView', sync=True)
|
|
|
orientation = CaselessStrEnum(values=['horizontal', 'vertical'],
|
|
|
default_value='horizontal', allow_none=False,
|
|
|
help="Vertical or horizontal.", sync=True)
|
|
|
_range = Bool(True, help="Display a range selector", sync=True)
|
|
|
readout = Bool(True, help="Display the current value of the slider next to it.", sync=True)
|
|
|
slider_color = Unicode(sync=True)
|
|
|
|
|
|
# Remove in IPython 4.0
|
|
|
FloatTextWidget = DeprecatedClass(FloatText, 'FloatTextWidget')
|
|
|
BoundedFloatTextWidget = DeprecatedClass(BoundedFloatText, 'BoundedFloatTextWidget')
|
|
|
FloatSliderWidget = DeprecatedClass(FloatSlider, 'FloatSliderWidget')
|
|
|
FloatProgressWidget = DeprecatedClass(FloatProgress, 'FloatProgressWidget')
|
|
|
|
