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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!
""" Defines 'theme' related classes.
"""
from traits.api import HasPrivateTraits, Property, cached_property
from traits.etsconfig.api import ETSConfig
from .ui_traits import Image, HasBorder, HasMargin, Alignment
class Theme(HasPrivateTraits):
# -- Public Traits --------------------------------------------------------
#: The background image to use for the theme:
image = Image
#: The border inset:
border = HasBorder
#: The margin to use around the content:
content = HasMargin
#: The margin to use around the label:
label = HasMargin
#: The alignment to use for positioning the label:
alignment = Alignment(cols=4)
#: The color to use for content text (Wx only)
content_color = Property()
#: The color to use for label text (Wx only)
label_color = Property()
#: The image slice used to draw the theme (Wx only)
image_slice = Property(observe="image")
# -- Constructor ----------------------------------------------------------
def __init__(self, image=None, **traits):
"""Initializes the object."""
if image is not None:
self.image = image
super().__init__(**traits)
# -- Property Implementations ---------------------------------------------
def _get_content_color(self):
if ETSConfig.toolkit == "wx":
import wx
if self._content_color is None:
color = wx.BLACK
islice = self.image_slice
if islice is not None:
color = islice.content_color
self._content_color = color
return self._content_color
def _set_content_color(self, color):
self._content_color = color
def _get_label_color(self):
if ETSConfig.toolkit == "wx":
import wx
if self._label_color is None:
color = wx.BLACK
islice = self.image_slice
if islice is not None:
color = islice.label_color
self._label_color = color
return self._label_color
def _set_label_color(self, color):
self._label_color = color
@cached_property
def _get_image_slice(self):
if self.image is None:
return None
if ETSConfig.toolkit == "wx":
from traitsui.wx.image_slice import image_slice_for
return image_slice_for(self.image)
#: The default theme:
default_theme = Theme()
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