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"""Color handling.
Utilities for handle color data and conversions.
"""
# XOColor from Sugar Toolkit:
# Copyright (C) 2006-2007 Red Hat, Inc.
#
# Adaptation and more:
# Copyright (C) 2012-2013 Daniel Francis
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
# MA 02110-1301, USA.
import logging
logger = logging.getLogger('colors')
# Part from Sugar Toolkit with very few adaptations.
def _parse_string(color_string):
if not isinstance(color_string, (str, unicode)):
logging.error('Invalid color string: %r', color_string)
return None
if color_string == 'white':
return ['#ffffff', '#414141']
elif color_string == 'insensitive':
return ['#ffffff', '#e2e2e2']
splitted = color_string.split(',')
if len(splitted) == 2:
return [splitted[0], splitted[1]]
else:
return None
def is_valid(color_string):
return (_parse_string(color_string) != None)
class XoColor:
def __init__(self, color_string):
if not is_valid(color_string):
logger.debug('Color string is not valid: %s, '
'fallback to default', color_string)
raise Exception
[self.stroke, self.fill] = _parse_string(color_string)
def __cmp__(self, other):
if isinstance(other, XoColor):
if self.stroke == other.stroke and self.fill == other.fill:
return 0
return -1
def get_stroke_color(self):
return self.stroke
def get_fill_color(self):
return self.fill
def to_string(self):
return '%s,%s' % (self.stroke, self.fill)
# Added in Sweetener
def color2string(color):
"""Converts a GdkColor to a RGB string
color -- Gdk.Color
"""
color_string = ["#"]
color_string.append("%02x" % (color.red / 256))
color_string.append("%02x" % (color.green / 256))
color_string.append("%02x" % (color.blue / 256))
string = "".join(color_string)
#logger.debug(str(color) + ' ' + string)
return string
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