Mercurial > libervia-backend
annotate libervia/frontends/tools/css_color.py @ 4306:94e0968987cd
plugin XEP-0033: code modernisation, improve delivery, data validation:
- Code has been rewritten using Pydantic models and `async` coroutines for data validation
and cleaner element parsing/generation.
- Delivery has been completely rewritten. It now works even if server doesn't support
multicast, and send to local multicast service first. Delivering to local multicast
service first is due to bad support of XEP-0033 in server (notably Prosody which has an
incomplete implementation), and the current impossibility to detect if a sub-domain
service handles fully multicast or only for local domains. This is a workaround to have
a good balance between backward compatilibity and use of bandwith, and to make it work
with the incoming email gateway implementation (the gateway will only deliver to
entities of its own domain).
- disco feature checking now uses `async` corountines. `host` implementation still use
Deferred return values for compatibility with legacy code.
rel 450
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Thu, 26 Sep 2024 16:12:01 +0200 |
| parents | 26b7ed2817da |
| children |
| rev | line source |
|---|---|
| 3137 | 1 #!/usr/bin/env python3 |
| 2 | |
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3 |
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4 # CSS color parsing |
| 3479 | 5 # Copyright (C) 2009-2021 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 libervia.backend.core.log import getLogger |
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21 |
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22 log = getLogger(__name__) |
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23 |
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24 |
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25 CSS_COLORS = { |
| 3028 | 26 "black": "000000", |
| 27 "silver": "c0c0c0", | |
| 28 "gray": "808080", | |
| 29 "white": "ffffff", | |
| 30 "maroon": "800000", | |
| 31 "red": "ff0000", | |
| 32 "purple": "800080", | |
| 33 "fuchsia": "ff00ff", | |
| 34 "green": "008000", | |
| 35 "lime": "00ff00", | |
| 36 "olive": "808000", | |
| 37 "yellow": "ffff00", | |
| 38 "navy": "000080", | |
| 39 "blue": "0000ff", | |
| 40 "teal": "008080", | |
| 41 "aqua": "00ffff", | |
| 42 "orange": "ffa500", | |
| 43 "aliceblue": "f0f8ff", | |
| 44 "antiquewhite": "faebd7", | |
| 45 "aquamarine": "7fffd4", | |
| 46 "azure": "f0ffff", | |
| 47 "beige": "f5f5dc", | |
| 48 "bisque": "ffe4c4", | |
| 49 "blanchedalmond": "ffebcd", | |
| 50 "blueviolet": "8a2be2", | |
| 51 "brown": "a52a2a", | |
| 52 "burlywood": "deb887", | |
| 53 "cadetblue": "5f9ea0", | |
| 54 "chartreuse": "7fff00", | |
| 55 "chocolate": "d2691e", | |
| 56 "coral": "ff7f50", | |
| 57 "cornflowerblue": "6495ed", | |
| 58 "cornsilk": "fff8dc", | |
| 59 "crimson": "dc143c", | |
| 60 "darkblue": "00008b", | |
| 61 "darkcyan": "008b8b", | |
| 62 "darkgoldenrod": "b8860b", | |
| 63 "darkgray": "a9a9a9", | |
| 64 "darkgreen": "006400", | |
| 65 "darkgrey": "a9a9a9", | |
| 66 "darkkhaki": "bdb76b", | |
| 67 "darkmagenta": "8b008b", | |
| 68 "darkolivegreen": "556b2f", | |
| 69 "darkorange": "ff8c00", | |
| 70 "darkorchid": "9932cc", | |
| 71 "darkred": "8b0000", | |
| 72 "darksalmon": "e9967a", | |
| 73 "darkseagreen": "8fbc8f", | |
| 74 "darkslateblue": "483d8b", | |
| 75 "darkslategray": "2f4f4f", | |
| 76 "darkslategrey": "2f4f4f", | |
| 77 "darkturquoise": "00ced1", | |
| 78 "darkviolet": "9400d3", | |
| 79 "deeppink": "ff1493", | |
| 80 "deepskyblue": "00bfff", | |
| 81 "dimgray": "696969", | |
| 82 "dimgrey": "696969", | |
| 83 "dodgerblue": "1e90ff", | |
| 84 "firebrick": "b22222", | |
| 85 "floralwhite": "fffaf0", | |
| 86 "forestgreen": "228b22", | |
| 87 "gainsboro": "dcdcdc", | |
| 88 "ghostwhite": "f8f8ff", | |
| 89 "gold": "ffd700", | |
| 90 "goldenrod": "daa520", | |
| 91 "greenyellow": "adff2f", | |
| 92 "grey": "808080", | |
| 93 "honeydew": "f0fff0", | |
| 94 "hotpink": "ff69b4", | |
| 95 "indianred": "cd5c5c", | |
| 96 "indigo": "4b0082", | |
| 97 "ivory": "fffff0", | |
| 98 "khaki": "f0e68c", | |
| 99 "lavender": "e6e6fa", | |
| 100 "lavenderblush": "fff0f5", | |
| 101 "lawngreen": "7cfc00", | |
| 102 "lemonchiffon": "fffacd", | |
| 103 "lightblue": "add8e6", | |
| 104 "lightcoral": "f08080", | |
| 105 "lightcyan": "e0ffff", | |
| 106 "lightgoldenrodyellow": "fafad2", | |
| 107 "lightgray": "d3d3d3", | |
| 108 "lightgreen": "90ee90", | |
| 109 "lightgrey": "d3d3d3", | |
| 110 "lightpink": "ffb6c1", | |
| 111 "lightsalmon": "ffa07a", | |
| 112 "lightseagreen": "20b2aa", | |
| 113 "lightskyblue": "87cefa", | |
| 114 "lightslategray": "778899", | |
| 115 "lightslategrey": "778899", | |
| 116 "lightsteelblue": "b0c4de", | |
| 117 "lightyellow": "ffffe0", | |
| 118 "limegreen": "32cd32", | |
| 119 "linen": "faf0e6", | |
| 120 "mediumaquamarine": "66cdaa", | |
| 121 "mediumblue": "0000cd", | |
| 122 "mediumorchid": "ba55d3", | |
| 123 "mediumpurple": "9370db", | |
| 124 "mediumseagreen": "3cb371", | |
| 125 "mediumslateblue": "7b68ee", | |
| 126 "mediumspringgreen": "00fa9a", | |
| 127 "mediumturquoise": "48d1cc", | |
| 128 "mediumvioletred": "c71585", | |
| 129 "midnightblue": "191970", | |
| 130 "mintcream": "f5fffa", | |
| 131 "mistyrose": "ffe4e1", | |
| 132 "moccasin": "ffe4b5", | |
| 133 "navajowhite": "ffdead", | |
| 134 "oldlace": "fdf5e6", | |
| 135 "olivedrab": "6b8e23", | |
| 136 "orangered": "ff4500", | |
| 137 "orchid": "da70d6", | |
| 138 "palegoldenrod": "eee8aa", | |
| 139 "palegreen": "98fb98", | |
| 140 "paleturquoise": "afeeee", | |
| 141 "palevioletred": "db7093", | |
| 142 "papayawhip": "ffefd5", | |
| 143 "peachpuff": "ffdab9", | |
| 144 "peru": "cd853f", | |
| 145 "pink": "ffc0cb", | |
| 146 "plum": "dda0dd", | |
| 147 "powderblue": "b0e0e6", | |
| 148 "rosybrown": "bc8f8f", | |
| 149 "royalblue": "4169e1", | |
| 150 "saddlebrown": "8b4513", | |
| 151 "salmon": "fa8072", | |
| 152 "sandybrown": "f4a460", | |
| 153 "seagreen": "2e8b57", | |
| 154 "seashell": "fff5ee", | |
| 155 "sienna": "a0522d", | |
| 156 "skyblue": "87ceeb", | |
| 157 "slateblue": "6a5acd", | |
| 158 "slategray": "708090", | |
| 159 "slategrey": "708090", | |
| 160 "snow": "fffafa", | |
| 161 "springgreen": "00ff7f", | |
| 162 "steelblue": "4682b4", | |
| 163 "tan": "d2b48c", | |
| 164 "thistle": "d8bfd8", | |
| 165 "tomato": "ff6347", | |
| 166 "turquoise": "40e0d0", | |
| 167 "violet": "ee82ee", | |
| 168 "wheat": "f5deb3", | |
| 169 "whitesmoke": "f5f5f5", | |
| 170 "yellowgreen": "9acd32", | |
| 171 "rebeccapurple": "663399", | |
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172 } |
| 3028 | 173 DEFAULT = "000000" |
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174 |
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175 |
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176 def parse(raw_value, as_string=True): |
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177 """parse CSS color value and return normalised value |
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178 |
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179 @param raw_value(unicode): CSS value |
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180 @param as_string(bool): if True return a string, |
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181 else return a tuple of int |
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182 @return (unicode, tuple): normalised value |
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183 if as_string is True, value is 3 or 4 hex words (e.g. u"ff00aabb") |
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184 else value is a 3 or 4 tuple of int (e.g.: (255, 0, 170, 187)). |
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185 If present, the 4th value is the alpha channel |
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186 If value can't be parsed, a warning message is logged, and DEFAULT is returned |
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187 """ |
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188 raw_value = raw_value.strip().lower() |
| 3028 | 189 if raw_value.startswith("#"): |
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190 # we have a hexadecimal value |
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191 str_value = raw_value[1:] |
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192 if len(raw_value) in (3, 4): |
| 3028 | 193 str_value = "".join([2 * v for v in str_value]) |
| 194 elif raw_value.startswith("rgb"): | |
| 195 left_p = raw_value.find("(") | |
| 196 right_p = raw_value.find(")") | |
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197 rgb_values = [v.strip() for v in raw_value[left_p + 1 : right_p].split(",")] |
| 3028 | 198 expected_len = 4 if raw_value.startswith("rgba") else 3 |
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199 if len(rgb_values) != expected_len: |
| 3028 | 200 log.warning("incorrect value: {}".format(raw_value)) |
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201 str_value = DEFAULT |
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202 else: |
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203 int_values = [] |
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204 for rgb_v in rgb_values: |
| 3028 | 205 p_idx = rgb_v.find("%") |
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206 if p_idx == -1: |
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207 # base 10 value |
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208 try: |
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209 int_v = int(rgb_v) |
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210 if int_v > 255: |
| 3028 | 211 raise ValueError("value exceed 255") |
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212 int_values.append(int_v) |
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213 except ValueError: |
| 3028 | 214 log.warning("invalid int: {}".format(rgb_v)) |
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215 int_values.append(0) |
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216 else: |
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217 # percentage |
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218 try: |
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219 int_v = int(int(rgb_v[:p_idx]) / 100.0 * 255) |
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220 if int_v > 255: |
| 3028 | 221 raise ValueError("value exceed 255") |
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222 int_values.append(int_v) |
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223 except ValueError: |
| 3028 | 224 log.warning("invalid percent value: {}".format(rgb_v)) |
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225 int_values.append(0) |
| 3028 | 226 str_value = "".join(["{:02x}".format(v) for v in int_values]) |
| 227 elif raw_value.startswith("hsl"): | |
| 228 log.warning("hue-saturation-lightness not handled yet") # TODO | |
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229 str_value = DEFAULT |
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230 else: |
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231 try: |
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232 str_value = CSS_COLORS[raw_value] |
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233 except KeyError: |
| 3028 | 234 log.warning("unrecognised format: {}".format(raw_value)) |
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235 str_value = DEFAULT |
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236 |
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237 if as_string: |
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238 return str_value |
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239 else: |
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240 return tuple( |
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241 [ |
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242 int(str_value[i] + str_value[i + 1], 16) |
| 3028 | 243 for i in range(0, len(str_value), 2) |
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244 ] |
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245 ) |