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annotate frontends/src/tools/css_color.py @ 2307:8fa7edd0da24

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plugin Pubsub Hook: first draft: This new plugin allow to attach an external action to a Pubsub event (i.e. notification). Hook can be persitent accross restarts, or temporary (will be deleted on profile disconnection). Only Python files are handled for now. In the future, it may make sense to move hooks in a generic plugin which could be used by ad-hoc commands, messages, pubsub, etc.
author Goffi <goffi@goffi.org>
date Wed, 05 Jul 2017 15:05:47 +0200
parents 95ad70ad815c
children 8b37a62336c3
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1 #!/usr/bin/env python2
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2 # -*- coding: utf-8 -*-
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3
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4 # CSS color parsing
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5 # Copyright (C) 2009-2016 Jérome-Poisson
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6
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7 # This program is free software: you can redistribute it and/or modify
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8 # it under the terms of the GNU Affero General Public License as published by
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9 # the Free Software Foundation, either version 3 of the License, or
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10 # (at your option) any later version.
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11
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12 # This program is distributed in the hope that it will be useful,
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 # GNU Affero General Public License for more details.
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16
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17 # You should have received a copy of the GNU Affero General Public License
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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19
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20 from sat.core.log import getLogger
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21 log = getLogger(__name__)
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22
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23
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24 CSS_COLORS = {
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25 u"black": u"000000",
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26 u"silver": u"c0c0c0",
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27 u"gray": u"808080",
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28 u"white": u"ffffff",
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29 u"maroon": u"800000",
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30 u"red": u"ff0000",
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31 u"purple": u"800080",
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32 u"fuchsia": u"ff00ff",
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33 u"green": u"008000",
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34 u"lime": u"00ff00",
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35 u"olive": u"808000",
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36 u"yellow": u"ffff00",
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37 u"navy": u"000080",
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38 u"blue": u"0000ff",
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39 u"teal": u"008080",
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40 u"aqua": u"00ffff",
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41 u"orange": u"ffa500",
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42 u"aliceblue": u"f0f8ff",
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43 u"antiquewhite": u"faebd7",
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44 u"aquamarine": u"7fffd4",
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45 u"azure": u"f0ffff",
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46 u"beige": u"f5f5dc",
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47 u"bisque": u"ffe4c4",
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48 u"blanchedalmond": u"ffebcd",
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49 u"blueviolet": u"8a2be2",
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50 u"brown": u"a52a2a",
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51 u"burlywood": u"deb887",
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52 u"cadetblue": u"5f9ea0",
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53 u"chartreuse": u"7fff00",
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54 u"chocolate": u"d2691e",
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55 u"coral": u"ff7f50",
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56 u"cornflowerblue": u"6495ed",
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57 u"cornsilk": u"fff8dc",
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58 u"crimson": u"dc143c",
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59 u"darkblue": u"00008b",
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60 u"darkcyan": u"008b8b",
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61 u"darkgoldenrod": u"b8860b",
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62 u"darkgray": u"a9a9a9",
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63 u"darkgreen": u"006400",
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64 u"darkgrey": u"a9a9a9",
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65 u"darkkhaki": u"bdb76b",
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66 u"darkmagenta": u"8b008b",
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67 u"darkolivegreen": u"556b2f",
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68 u"darkorange": u"ff8c00",
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69 u"darkorchid": u"9932cc",
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70 u"darkred": u"8b0000",
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71 u"darksalmon": u"e9967a",
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72 u"darkseagreen": u"8fbc8f",
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73 u"darkslateblue": u"483d8b",
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74 u"darkslategray": u"2f4f4f",
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75 u"darkslategrey": u"2f4f4f",
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76 u"darkturquoise": u"00ced1",
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77 u"darkviolet": u"9400d3",
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78 u"deeppink": u"ff1493",
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79 u"deepskyblue": u"00bfff",
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80 u"dimgray": u"696969",
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81 u"dimgrey": u"696969",
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82 u"dodgerblue": u"1e90ff",
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83 u"firebrick": u"b22222",
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84 u"floralwhite": u"fffaf0",
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85 u"forestgreen": u"228b22",
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86 u"gainsboro": u"dcdcdc",
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87 u"ghostwhite": u"f8f8ff",
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88 u"gold": u"ffd700",
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89 u"goldenrod": u"daa520",
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90 u"greenyellow": u"adff2f",
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91 u"grey": u"808080",
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92 u"honeydew": u"f0fff0",
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93 u"hotpink": u"ff69b4",
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94 u"indianred": u"cd5c5c",
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95 u"indigo": u"4b0082",
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96 u"ivory": u"fffff0",
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97 u"khaki": u"f0e68c",
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98 u"lavender": u"e6e6fa",
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99 u"lavenderblush": u"fff0f5",
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100 u"lawngreen": u"7cfc00",
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101 u"lemonchiffon": u"fffacd",
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102 u"lightblue": u"add8e6",
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103 u"lightcoral": u"f08080",
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104 u"lightcyan": u"e0ffff",
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105 u"lightgoldenrodyellow": u"fafad2",
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106 u"lightgray": u"d3d3d3",
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107 u"lightgreen": u"90ee90",
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108 u"lightgrey": u"d3d3d3",
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109 u"lightpink": u"ffb6c1",
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110 u"lightsalmon": u"ffa07a",
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111 u"lightseagreen": u"20b2aa",
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112 u"lightskyblue": u"87cefa",
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113 u"lightslategray": u"778899",
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114 u"lightslategrey": u"778899",
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115 u"lightsteelblue": u"b0c4de",
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116 u"lightyellow": u"ffffe0",
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117 u"limegreen": u"32cd32",
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118 u"linen": u"faf0e6",
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119 u"mediumaquamarine": u"66cdaa",
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120 u"mediumblue": u"0000cd",
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121 u"mediumorchid": u"ba55d3",
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122 u"mediumpurple": u"9370db",
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123 u"mediumseagreen": u"3cb371",
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124 u"mediumslateblue": u"7b68ee",
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125 u"mediumspringgreen": u"00fa9a",
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126 u"mediumturquoise": u"48d1cc",
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127 u"mediumvioletred": u"c71585",
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128 u"midnightblue": u"191970",
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129 u"mintcream": u"f5fffa",
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130 u"mistyrose": u"ffe4e1",
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131 u"moccasin": u"ffe4b5",
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132 u"navajowhite": u"ffdead",
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133 u"oldlace": u"fdf5e6",
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134 u"olivedrab": u"6b8e23",
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135 u"orangered": u"ff4500",
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136 u"orchid": u"da70d6",
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Goffi <goffi@goffi.org>
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137 u"palegoldenrod": u"eee8aa",
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Goffi <goffi@goffi.org>
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138 u"palegreen": u"98fb98",
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Goffi <goffi@goffi.org>
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139 u"paleturquoise": u"afeeee",
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Goffi <goffi@goffi.org>
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140 u"palevioletred": u"db7093",
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Goffi <goffi@goffi.org>
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141 u"papayawhip": u"ffefd5",
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Goffi <goffi@goffi.org>
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142 u"peachpuff": u"ffdab9",
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Goffi <goffi@goffi.org>
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143 u"peru": u"cd853f",
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Goffi <goffi@goffi.org>
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144 u"pink": u"ffc0cb",
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Goffi <goffi@goffi.org>
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145 u"plum": u"dda0dd",
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Goffi <goffi@goffi.org>
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146 u"powderblue": u"b0e0e6",
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Goffi <goffi@goffi.org>
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147 u"rosybrown": u"bc8f8f",
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Goffi <goffi@goffi.org>
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148 u"royalblue": u"4169e1",
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Goffi <goffi@goffi.org>
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149 u"saddlebrown": u"8b4513",
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Goffi <goffi@goffi.org>
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150 u"salmon": u"fa8072",
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Goffi <goffi@goffi.org>
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151 u"sandybrown": u"f4a460",
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Goffi <goffi@goffi.org>
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152 u"seagreen": u"2e8b57",
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Goffi <goffi@goffi.org>
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153 u"seashell": u"fff5ee",
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Goffi <goffi@goffi.org>
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154 u"sienna": u"a0522d",
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Goffi <goffi@goffi.org>
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155 u"skyblue": u"87ceeb",
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Goffi <goffi@goffi.org>
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156 u"slateblue": u"6a5acd",
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Goffi <goffi@goffi.org>
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157 u"slategray": u"708090",
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Goffi <goffi@goffi.org>
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158 u"slategrey": u"708090",
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Goffi <goffi@goffi.org>
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159 u"snow": u"fffafa",
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Goffi <goffi@goffi.org>
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160 u"springgreen": u"00ff7f",
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Goffi <goffi@goffi.org>
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161 u"steelblue": u"4682b4",
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Goffi <goffi@goffi.org>
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162 u"tan": u"d2b48c",
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Goffi <goffi@goffi.org>
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163 u"thistle": u"d8bfd8",
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Goffi <goffi@goffi.org>
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164 u"tomato": u"ff6347",
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Goffi <goffi@goffi.org>
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165 u"turquoise": u"40e0d0",
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Goffi <goffi@goffi.org>
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166 u"violet": u"ee82ee",
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Goffi <goffi@goffi.org>
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167 u"wheat": u"f5deb3",
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Goffi <goffi@goffi.org>
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168 u"whitesmoke": u"f5f5f5",
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Goffi <goffi@goffi.org>
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169 u"yellowgreen": u"9acd32",
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Goffi <goffi@goffi.org>
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170 u"rebeccapurple": u"663399"
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Goffi <goffi@goffi.org>
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171 }
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172 DEFAULT = u"000000"
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Goffi <goffi@goffi.org>
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173
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Goffi <goffi@goffi.org>
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174
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Goffi <goffi@goffi.org>
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175 def parse(raw_value, as_string=True):
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Goffi <goffi@goffi.org>
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176 """parse CSS color value and return normalised value
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177
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178 @param raw_value(unicode): CSS value
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179 @param as_string(bool): if True return a string,
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180 else return a tuple of int
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181 @return (unicode, tuple): normalised value
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182 if as_string is True, value is 3 or 4 hex words (e.g. u"ff00aabb")
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183 else value is a 3 or 4 tuple of int (e.g.: (255, 0, 170, 187)).
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184 If present, the 4th value is the alpha channel
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185 If value can't be parsed, a warning message is logged, and DEFAULT is returned
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186 """
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187 raw_value = raw_value.strip().lower()
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Goffi <goffi@goffi.org>
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diff changeset
188 if raw_value.startswith(u'#'):
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Goffi <goffi@goffi.org>
parents:
diff changeset
189 # we have a hexadecimal value
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Goffi <goffi@goffi.org>
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190 str_value = raw_value[1:]
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Goffi <goffi@goffi.org>
parents:
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191 if len(raw_value) in (3,4):
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Goffi <goffi@goffi.org>
parents:
diff changeset
192 str_value = u''.join([2*v for v in str_value])
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Goffi <goffi@goffi.org>
parents:
diff changeset
193 elif raw_value.startswith(u'rgb'):
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Goffi <goffi@goffi.org>
parents:
diff changeset
194 left_p = raw_value.find(u'(')
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Goffi <goffi@goffi.org>
parents:
diff changeset
195 right_p = raw_value.find(u')')
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Goffi <goffi@goffi.org>
parents:
diff changeset
196 rgb_values = [v.strip() for v in raw_value[left_p+1:right_p].split(',')]
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Goffi <goffi@goffi.org>
parents:
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197 expected_len = 4 if raw_value.startswith(u'rgba') else 3
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Goffi <goffi@goffi.org>
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198 if len(rgb_values) != expected_len:
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199 log.warning(u"incorrect value: {}".format(raw_value))
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200 str_value = DEFAULT
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Goffi <goffi@goffi.org>
parents:
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201 else:
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Goffi <goffi@goffi.org>
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202 int_values = []
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Goffi <goffi@goffi.org>
parents:
diff changeset
203 for rgb_v in rgb_values:
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Goffi <goffi@goffi.org>
parents:
diff changeset
204 p_idx = rgb_v.find(u'%')
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Goffi <goffi@goffi.org>
parents:
diff changeset
205 if p_idx == -1:
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Goffi <goffi@goffi.org>
parents:
diff changeset
206 # base 10 value
95ad70ad815c frontends (tools): added a module to parse CSS colors
Goffi <goffi@goffi.org>
parents:
diff changeset
207 try:
95ad70ad815c frontends (tools): added a module to parse CSS colors
Goffi <goffi@goffi.org>
parents:
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208 int_v = int(rgb_v)
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Goffi <goffi@goffi.org>
parents:
diff changeset
209 if int_v > 255:
95ad70ad815c frontends (tools): added a module to parse CSS colors
Goffi <goffi@goffi.org>
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210 raise ValueError(u"value exceed 255")
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Goffi <goffi@goffi.org>
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211 int_values.append(int_v)
95ad70ad815c frontends (tools): added a module to parse CSS colors
Goffi <goffi@goffi.org>
parents:
diff changeset
212 except ValueError:
95ad70ad815c frontends (tools): added a module to parse CSS colors
Goffi <goffi@goffi.org>
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213 log.warning(u"invalid int: {}".format(rgb_v))
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Goffi <goffi@goffi.org>
parents:
diff changeset
214 int_values.append(0)
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Goffi <goffi@goffi.org>
parents:
diff changeset
215 else:
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Goffi <goffi@goffi.org>
parents:
diff changeset
216 # percentage
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Goffi <goffi@goffi.org>
parents:
diff changeset
217 try:
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Goffi <goffi@goffi.org>
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diff changeset
218 int_v = int(int(rgb_v[:p_idx]) / 100.0 * 255)
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Goffi <goffi@goffi.org>
parents:
diff changeset
219 if int_v > 255:
95ad70ad815c frontends (tools): added a module to parse CSS colors
Goffi <goffi@goffi.org>
parents:
diff changeset
220 raise ValueError(u"value exceed 255")
95ad70ad815c frontends (tools): added a module to parse CSS colors
Goffi <goffi@goffi.org>
parents:
diff changeset
221 int_values.append(int_v)
95ad70ad815c frontends (tools): added a module to parse CSS colors
Goffi <goffi@goffi.org>
parents:
diff changeset
222 except ValueError:
95ad70ad815c frontends (tools): added a module to parse CSS colors
Goffi <goffi@goffi.org>
parents:
diff changeset
223 log.warning(u"invalid percent value: {}".format(rgb_v))
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Goffi <goffi@goffi.org>
parents:
diff changeset
224 int_values.append(0)
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Goffi <goffi@goffi.org>
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diff changeset
225 str_value = u''.join([u"{:02x}".format(v) for v in int_values])
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Goffi <goffi@goffi.org>
parents:
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226 elif raw_value.startswith(u'hsl'):
95ad70ad815c frontends (tools): added a module to parse CSS colors
Goffi <goffi@goffi.org>
parents:
diff changeset
227 log.warning(u"hue-saturation-lightness not handled yet") # TODO
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Goffi <goffi@goffi.org>
parents:
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228 str_value = DEFAULT
95ad70ad815c frontends (tools): added a module to parse CSS colors
Goffi <goffi@goffi.org>
parents:
diff changeset
229 else:
95ad70ad815c frontends (tools): added a module to parse CSS colors
Goffi <goffi@goffi.org>
parents:
diff changeset
230 try:
95ad70ad815c frontends (tools): added a module to parse CSS colors
Goffi <goffi@goffi.org>
parents:
diff changeset
231 str_value = CSS_COLORS[raw_value]
95ad70ad815c frontends (tools): added a module to parse CSS colors
Goffi <goffi@goffi.org>
parents:
diff changeset
232 except KeyError:
95ad70ad815c frontends (tools): added a module to parse CSS colors
Goffi <goffi@goffi.org>
parents:
diff changeset
233 log.warning(u"unrecognised format: {}".format(raw_value))
95ad70ad815c frontends (tools): added a module to parse CSS colors
Goffi <goffi@goffi.org>
parents:
diff changeset
234 str_value = DEFAULT
95ad70ad815c frontends (tools): added a module to parse CSS colors
Goffi <goffi@goffi.org>
parents:
diff changeset
235
95ad70ad815c frontends (tools): added a module to parse CSS colors
Goffi <goffi@goffi.org>
parents:
diff changeset
236 if as_string:
95ad70ad815c frontends (tools): added a module to parse CSS colors
Goffi <goffi@goffi.org>
parents:
diff changeset
237 return str_value
95ad70ad815c frontends (tools): added a module to parse CSS colors
Goffi <goffi@goffi.org>
parents:
diff changeset
238 else:
95ad70ad815c frontends (tools): added a module to parse CSS colors
Goffi <goffi@goffi.org>
parents:
diff changeset
239 return tuple([int(str_value[i]+str_value[i+1], 16) for i in xrange(0, len(str_value), 2)])