Source code for openpyxl.styles.colors

# Copyright (c) 2010-2020 openpyxl

import re
from openpyxl.compat import safe_string
from openpyxl.descriptors import (
    String,
    Bool,
    MinMax,
    Integer,
    Typed,
)
from openpyxl.descriptors.sequence import NestedSequence
from openpyxl.descriptors.serialisable import Serialisable

# Default Color Index as per 18.8.27 of ECMA Part 4
COLOR_INDEX = (
    '00000000', '00FFFFFF', '00FF0000', '0000FF00', '000000FF', #0-4
    '00FFFF00', '00FF00FF', '0000FFFF', '00000000', '00FFFFFF', #5-9
    '00FF0000', '0000FF00', '000000FF', '00FFFF00', '00FF00FF', #10-14
    '0000FFFF', '00800000', '00008000', '00000080', '00808000', #15-19
    '00800080', '00008080', '00C0C0C0', '00808080', '009999FF', #20-24
    '00993366', '00FFFFCC', '00CCFFFF', '00660066', '00FF8080', #25-29
    '000066CC', '00CCCCFF', '00000080', '00FF00FF', '00FFFF00', #30-34
    '0000FFFF', '00800080', '00800000', '00008080', '000000FF', #35-39
    '0000CCFF', '00CCFFFF', '00CCFFCC', '00FFFF99', '0099CCFF', #40-44
    '00FF99CC', '00CC99FF', '00FFCC99', '003366FF', '0033CCCC', #45-49
    '0099CC00', '00FFCC00', '00FF9900', '00FF6600', '00666699', #50-54
    '00969696', '00003366', '00339966', '00003300', '00333300', #55-59
    '00993300', '00993366', '00333399', '00333333',  #60-63
)
# indices 64 and 65 are reserved for the system foreground and background colours respectively

# Will remove these definitions in a future release
BLACK = COLOR_INDEX[0]
WHITE = COLOR_INDEX[1]
#RED = COLOR_INDEX[2]
#DARKRED = COLOR_INDEX[8]
BLUE = COLOR_INDEX[4]
#DARKBLUE = COLOR_INDEX[12]
#GREEN = COLOR_INDEX[3]
#DARKGREEN = COLOR_INDEX[9]
#YELLOW = COLOR_INDEX[5]
#DARKYELLOW = COLOR_INDEX[19]


aRGB_REGEX = re.compile("^([A-Fa-f0-9]{8}|[A-Fa-f0-9]{6})$")


[docs]class RGB(Typed): """ Descriptor for aRGB values If not supplied alpha is 00 """ expected_type = str def __set__(self, instance, value): if not self.allow_none: m = aRGB_REGEX.match(value) if m is None: raise ValueError("Colors must be aRGB hex values") if len(value) == 6: value = "00" + value super(RGB, self).__set__(instance, value)
[docs]class Color(Serialisable): """Named colors for use in styles.""" tagname = "color" rgb = RGB() indexed = Integer() auto = Bool() theme = Integer() tint = MinMax(min=-1, max=1, expected_type=float) type = String() def __init__(self, rgb=BLACK, indexed=None, auto=None, theme=None, tint=0.0, index=None, type='rgb'): if index is not None: indexed = index if indexed is not None: self.type = 'indexed' self.indexed = indexed elif theme is not None: self.type = 'theme' self.theme = theme elif auto is not None: self.type = 'auto' self.auto = auto else: self.rgb = rgb self.type = 'rgb' self.tint = tint @property def value(self): return getattr(self, self.type) @value.setter def value(self, value): setattr(self, self.type, value) def __iter__(self): attrs = [(self.type, self.value)] if self.tint != 0: attrs.append(('tint', self.tint)) for k, v in attrs: yield k, safe_string(v) @property def index(self): # legacy return self.value def __add__(self, other): """ Adding colours is undefined behaviour best do nothing """ if not isinstance(other, Color): return super(Color, self).__add__(other) return self
[docs]class ColorDescriptor(Typed): expected_type = Color def __set__(self, instance, value): if isinstance(value, str): value = Color(rgb=value) super(ColorDescriptor, self).__set__(instance, value)
[docs]class RgbColor(Serialisable): tagname = "rgbColor" rgb = RGB() def __init__(self, rgb=None, ): self.rgb = rgb
[docs]class ColorList(Serialisable): tagname = "colors" indexedColors = NestedSequence(expected_type=RgbColor) mruColors = NestedSequence(expected_type=Color) __elements__ = ('indexedColors', 'mruColors') def __init__(self, indexedColors=(), mruColors=(), ): self.indexedColors = indexedColors self.mruColors = mruColors def __bool__(self): return bool(self.indexedColors) or bool(self.mruColors) @property def index(self): return [val.rgb for val in self.indexedColors]