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# (C) Copyright 2004-2023 Enthought, Inc., Austin, TX
# All rights reserved.
#
# This software is provided without warranty under the terms of the BSD
# license included in LICENSE.txt and may be redistributed only under
# the conditions described in the aforementioned license. The license
# is also available online at http://www.enthought.com/licenses/BSD.txt
#
# Thanks for using Enthought open source!
""" Table column object for RGBColor traits.
"""
from traitsui.table_column import ObjectColumn
class ColorColumn(ObjectColumn):
"""Table column object for RGBColor traits."""
#: For display by default.
style = "readonly"
# -- ObjectColumn Overrides -----------------------------------------------
def get_cell_color(self, object):
"""Returns the cell background color for the column for a specified
object.
"""
color_values = getattr(object, self.name + "_", None)
if color_values is None:
tk_color = super().get_cell_color(object)
elif isinstance(color_values, tuple):
tk_color = self._as_int_rgb_tuple(color_values)
else:
tk_color = color_values
return tk_color
def get_value(self, object):
"""Gets the value of the column for a specified object."""
value = getattr(self.get_object(object), self.name, "")
if isinstance(value, tuple):
value = self._float_rgb_tuple_to_str(value)
elif not isinstance(value, str):
value = ""
return value
# -- Private Methods ------------------------------------------------------
def _as_int_rgb_tuple(self, color_values):
"""Returns object color as RGB integers."""
return tuple(int(255 * v + 0.5) for v in color_values)
def _float_rgb_tuple_to_str(self, color_values):
"""Returns object color as RGB floats."""
csv = ", ".join("{:5.3f}".format(x) for x in color_values)
return "({})".format(csv)
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