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author | S. Solomon Darnell | 2025-03-28 21:52:21 -0500 |
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committer | S. Solomon Darnell | 2025-03-28 21:52:21 -0500 |
commit | 4a52a71956a8d46fcb7294ac71734504bb09bcc2 (patch) | |
tree | ee3dc5af3b6313e921cd920906356f5d4febc4ed /.venv/lib/python3.12/site-packages/pydantic/v1/color.py | |
parent | cc961e04ba734dd72309fb548a2f97d67d578813 (diff) | |
download | gn-ai-master.tar.gz |
Diffstat (limited to '.venv/lib/python3.12/site-packages/pydantic/v1/color.py')
-rw-r--r-- | .venv/lib/python3.12/site-packages/pydantic/v1/color.py | 494 |
1 files changed, 494 insertions, 0 deletions
diff --git a/.venv/lib/python3.12/site-packages/pydantic/v1/color.py b/.venv/lib/python3.12/site-packages/pydantic/v1/color.py new file mode 100644 index 00000000..b0bbf78f --- /dev/null +++ b/.venv/lib/python3.12/site-packages/pydantic/v1/color.py @@ -0,0 +1,494 @@ +""" +Color definitions are used as per CSS3 specification: +http://www.w3.org/TR/css3-color/#svg-color + +A few colors have multiple names referring to the sames colors, eg. `grey` and `gray` or `aqua` and `cyan`. + +In these cases the LAST color when sorted alphabetically takes preferences, +eg. Color((0, 255, 255)).as_named() == 'cyan' because "cyan" comes after "aqua". +""" +import math +import re +from colorsys import hls_to_rgb, rgb_to_hls +from typing import TYPE_CHECKING, Any, Dict, Optional, Tuple, Union, cast + +from pydantic.v1.errors import ColorError +from pydantic.v1.utils import Representation, almost_equal_floats + +if TYPE_CHECKING: + from pydantic.v1.typing import CallableGenerator, ReprArgs + +ColorTuple = Union[Tuple[int, int, int], Tuple[int, int, int, float]] +ColorType = Union[ColorTuple, str] +HslColorTuple = Union[Tuple[float, float, float], Tuple[float, float, float, float]] + + +class RGBA: + """ + Internal use only as a representation of a color. + """ + + __slots__ = 'r', 'g', 'b', 'alpha', '_tuple' + + def __init__(self, r: float, g: float, b: float, alpha: Optional[float]): + self.r = r + self.g = g + self.b = b + self.alpha = alpha + + self._tuple: Tuple[float, float, float, Optional[float]] = (r, g, b, alpha) + + def __getitem__(self, item: Any) -> Any: + return self._tuple[item] + + +# these are not compiled here to avoid import slowdown, they'll be compiled the first time they're used, then cached +r_hex_short = r'\s*(?:#|0x)?([0-9a-f])([0-9a-f])([0-9a-f])([0-9a-f])?\s*' +r_hex_long = r'\s*(?:#|0x)?([0-9a-f]{2})([0-9a-f]{2})([0-9a-f]{2})([0-9a-f]{2})?\s*' +_r_255 = r'(\d{1,3}(?:\.\d+)?)' +_r_comma = r'\s*,\s*' +r_rgb = fr'\s*rgb\(\s*{_r_255}{_r_comma}{_r_255}{_r_comma}{_r_255}\)\s*' +_r_alpha = r'(\d(?:\.\d+)?|\.\d+|\d{1,2}%)' +r_rgba = fr'\s*rgba\(\s*{_r_255}{_r_comma}{_r_255}{_r_comma}{_r_255}{_r_comma}{_r_alpha}\s*\)\s*' +_r_h = r'(-?\d+(?:\.\d+)?|-?\.\d+)(deg|rad|turn)?' +_r_sl = r'(\d{1,3}(?:\.\d+)?)%' +r_hsl = fr'\s*hsl\(\s*{_r_h}{_r_comma}{_r_sl}{_r_comma}{_r_sl}\s*\)\s*' +r_hsla = fr'\s*hsl\(\s*{_r_h}{_r_comma}{_r_sl}{_r_comma}{_r_sl}{_r_comma}{_r_alpha}\s*\)\s*' + +# colors where the two hex characters are the same, if all colors match this the short version of hex colors can be used +repeat_colors = {int(c * 2, 16) for c in '0123456789abcdef'} +rads = 2 * math.pi + + +class Color(Representation): + __slots__ = '_original', '_rgba' + + def __init__(self, value: ColorType) -> None: + self._rgba: RGBA + self._original: ColorType + if isinstance(value, (tuple, list)): + self._rgba = parse_tuple(value) + elif isinstance(value, str): + self._rgba = parse_str(value) + elif isinstance(value, Color): + self._rgba = value._rgba + value = value._original + else: + raise ColorError(reason='value must be a tuple, list or string') + + # if we've got here value must be a valid color + self._original = value + + @classmethod + def __modify_schema__(cls, field_schema: Dict[str, Any]) -> None: + field_schema.update(type='string', format='color') + + def original(self) -> ColorType: + """ + Original value passed to Color + """ + return self._original + + def as_named(self, *, fallback: bool = False) -> str: + if self._rgba.alpha is None: + rgb = cast(Tuple[int, int, int], self.as_rgb_tuple()) + try: + return COLORS_BY_VALUE[rgb] + except KeyError as e: + if fallback: + return self.as_hex() + else: + raise ValueError('no named color found, use fallback=True, as_hex() or as_rgb()') from e + else: + return self.as_hex() + + def as_hex(self) -> str: + """ + Hex string representing the color can be 3, 4, 6 or 8 characters depending on whether the string + a "short" representation of the color is possible and whether there's an alpha channel. + """ + values = [float_to_255(c) for c in self._rgba[:3]] + if self._rgba.alpha is not None: + values.append(float_to_255(self._rgba.alpha)) + + as_hex = ''.join(f'{v:02x}' for v in values) + if all(c in repeat_colors for c in values): + as_hex = ''.join(as_hex[c] for c in range(0, len(as_hex), 2)) + return '#' + as_hex + + def as_rgb(self) -> str: + """ + Color as an rgb(<r>, <g>, <b>) or rgba(<r>, <g>, <b>, <a>) string. + """ + if self._rgba.alpha is None: + return f'rgb({float_to_255(self._rgba.r)}, {float_to_255(self._rgba.g)}, {float_to_255(self._rgba.b)})' + else: + return ( + f'rgba({float_to_255(self._rgba.r)}, {float_to_255(self._rgba.g)}, {float_to_255(self._rgba.b)}, ' + f'{round(self._alpha_float(), 2)})' + ) + + def as_rgb_tuple(self, *, alpha: Optional[bool] = None) -> ColorTuple: + """ + Color as an RGB or RGBA tuple; red, green and blue are in the range 0 to 255, alpha if included is + in the range 0 to 1. + + :param alpha: whether to include the alpha channel, options are + None - (default) include alpha only if it's set (e.g. not None) + True - always include alpha, + False - always omit alpha, + """ + r, g, b = (float_to_255(c) for c in self._rgba[:3]) + if alpha is None: + if self._rgba.alpha is None: + return r, g, b + else: + return r, g, b, self._alpha_float() + elif alpha: + return r, g, b, self._alpha_float() + else: + # alpha is False + return r, g, b + + def as_hsl(self) -> str: + """ + Color as an hsl(<h>, <s>, <l>) or hsl(<h>, <s>, <l>, <a>) string. + """ + if self._rgba.alpha is None: + h, s, li = self.as_hsl_tuple(alpha=False) # type: ignore + return f'hsl({h * 360:0.0f}, {s:0.0%}, {li:0.0%})' + else: + h, s, li, a = self.as_hsl_tuple(alpha=True) # type: ignore + return f'hsl({h * 360:0.0f}, {s:0.0%}, {li:0.0%}, {round(a, 2)})' + + def as_hsl_tuple(self, *, alpha: Optional[bool] = None) -> HslColorTuple: + """ + Color as an HSL or HSLA tuple, e.g. hue, saturation, lightness and optionally alpha; all elements are in + the range 0 to 1. + + NOTE: this is HSL as used in HTML and most other places, not HLS as used in python's colorsys. + + :param alpha: whether to include the alpha channel, options are + None - (default) include alpha only if it's set (e.g. not None) + True - always include alpha, + False - always omit alpha, + """ + h, l, s = rgb_to_hls(self._rgba.r, self._rgba.g, self._rgba.b) + if alpha is None: + if self._rgba.alpha is None: + return h, s, l + else: + return h, s, l, self._alpha_float() + if alpha: + return h, s, l, self._alpha_float() + else: + # alpha is False + return h, s, l + + def _alpha_float(self) -> float: + return 1 if self._rgba.alpha is None else self._rgba.alpha + + @classmethod + def __get_validators__(cls) -> 'CallableGenerator': + yield cls + + def __str__(self) -> str: + return self.as_named(fallback=True) + + def __repr_args__(self) -> 'ReprArgs': + return [(None, self.as_named(fallback=True))] + [('rgb', self.as_rgb_tuple())] # type: ignore + + def __eq__(self, other: Any) -> bool: + return isinstance(other, Color) and self.as_rgb_tuple() == other.as_rgb_tuple() + + def __hash__(self) -> int: + return hash(self.as_rgb_tuple()) + + +def parse_tuple(value: Tuple[Any, ...]) -> RGBA: + """ + Parse a tuple or list as a color. + """ + if len(value) == 3: + r, g, b = (parse_color_value(v) for v in value) + return RGBA(r, g, b, None) + elif len(value) == 4: + r, g, b = (parse_color_value(v) for v in value[:3]) + return RGBA(r, g, b, parse_float_alpha(value[3])) + else: + raise ColorError(reason='tuples must have length 3 or 4') + + +def parse_str(value: str) -> RGBA: + """ + Parse a string to an RGBA tuple, trying the following formats (in this order): + * named color, see COLORS_BY_NAME below + * hex short eg. `<prefix>fff` (prefix can be `#`, `0x` or nothing) + * hex long eg. `<prefix>ffffff` (prefix can be `#`, `0x` or nothing) + * `rgb(<r>, <g>, <b>) ` + * `rgba(<r>, <g>, <b>, <a>)` + """ + value_lower = value.lower() + try: + r, g, b = COLORS_BY_NAME[value_lower] + except KeyError: + pass + else: + return ints_to_rgba(r, g, b, None) + + m = re.fullmatch(r_hex_short, value_lower) + if m: + *rgb, a = m.groups() + r, g, b = (int(v * 2, 16) for v in rgb) + if a: + alpha: Optional[float] = int(a * 2, 16) / 255 + else: + alpha = None + return ints_to_rgba(r, g, b, alpha) + + m = re.fullmatch(r_hex_long, value_lower) + if m: + *rgb, a = m.groups() + r, g, b = (int(v, 16) for v in rgb) + if a: + alpha = int(a, 16) / 255 + else: + alpha = None + return ints_to_rgba(r, g, b, alpha) + + m = re.fullmatch(r_rgb, value_lower) + if m: + return ints_to_rgba(*m.groups(), None) # type: ignore + + m = re.fullmatch(r_rgba, value_lower) + if m: + return ints_to_rgba(*m.groups()) # type: ignore + + m = re.fullmatch(r_hsl, value_lower) + if m: + h, h_units, s, l_ = m.groups() + return parse_hsl(h, h_units, s, l_) + + m = re.fullmatch(r_hsla, value_lower) + if m: + h, h_units, s, l_, a = m.groups() + return parse_hsl(h, h_units, s, l_, parse_float_alpha(a)) + + raise ColorError(reason='string not recognised as a valid color') + + +def ints_to_rgba(r: Union[int, str], g: Union[int, str], b: Union[int, str], alpha: Optional[float]) -> RGBA: + return RGBA(parse_color_value(r), parse_color_value(g), parse_color_value(b), parse_float_alpha(alpha)) + + +def parse_color_value(value: Union[int, str], max_val: int = 255) -> float: + """ + Parse a value checking it's a valid int in the range 0 to max_val and divide by max_val to give a number + in the range 0 to 1 + """ + try: + color = float(value) + except ValueError: + raise ColorError(reason='color values must be a valid number') + if 0 <= color <= max_val: + return color / max_val + else: + raise ColorError(reason=f'color values must be in the range 0 to {max_val}') + + +def parse_float_alpha(value: Union[None, str, float, int]) -> Optional[float]: + """ + Parse a value checking it's a valid float in the range 0 to 1 + """ + if value is None: + return None + try: + if isinstance(value, str) and value.endswith('%'): + alpha = float(value[:-1]) / 100 + else: + alpha = float(value) + except ValueError: + raise ColorError(reason='alpha values must be a valid float') + + if almost_equal_floats(alpha, 1): + return None + elif 0 <= alpha <= 1: + return alpha + else: + raise ColorError(reason='alpha values must be in the range 0 to 1') + + +def parse_hsl(h: str, h_units: str, sat: str, light: str, alpha: Optional[float] = None) -> RGBA: + """ + Parse raw hue, saturation, lightness and alpha values and convert to RGBA. + """ + s_value, l_value = parse_color_value(sat, 100), parse_color_value(light, 100) + + h_value = float(h) + if h_units in {None, 'deg'}: + h_value = h_value % 360 / 360 + elif h_units == 'rad': + h_value = h_value % rads / rads + else: + # turns + h_value = h_value % 1 + + r, g, b = hls_to_rgb(h_value, l_value, s_value) + return RGBA(r, g, b, alpha) + + +def float_to_255(c: float) -> int: + return int(round(c * 255)) + + +COLORS_BY_NAME = { + 'aliceblue': (240, 248, 255), + 'antiquewhite': (250, 235, 215), + 'aqua': (0, 255, 255), + 'aquamarine': (127, 255, 212), + 'azure': (240, 255, 255), + 'beige': (245, 245, 220), + 'bisque': (255, 228, 196), + 'black': (0, 0, 0), + 'blanchedalmond': (255, 235, 205), + 'blue': (0, 0, 255), + 'blueviolet': (138, 43, 226), + 'brown': (165, 42, 42), + 'burlywood': (222, 184, 135), + 'cadetblue': (95, 158, 160), + 'chartreuse': (127, 255, 0), + 'chocolate': (210, 105, 30), + 'coral': (255, 127, 80), + 'cornflowerblue': (100, 149, 237), + 'cornsilk': (255, 248, 220), + 'crimson': (220, 20, 60), + 'cyan': (0, 255, 255), + 'darkblue': (0, 0, 139), + 'darkcyan': (0, 139, 139), + 'darkgoldenrod': (184, 134, 11), + 'darkgray': (169, 169, 169), + 'darkgreen': (0, 100, 0), + 'darkgrey': (169, 169, 169), + 'darkkhaki': (189, 183, 107), + 'darkmagenta': (139, 0, 139), + 'darkolivegreen': (85, 107, 47), + 'darkorange': (255, 140, 0), + 'darkorchid': (153, 50, 204), + 'darkred': (139, 0, 0), + 'darksalmon': (233, 150, 122), + 'darkseagreen': (143, 188, 143), + 'darkslateblue': (72, 61, 139), + 'darkslategray': (47, 79, 79), + 'darkslategrey': (47, 79, 79), + 'darkturquoise': (0, 206, 209), + 'darkviolet': (148, 0, 211), + 'deeppink': (255, 20, 147), + 'deepskyblue': (0, 191, 255), + 'dimgray': (105, 105, 105), + 'dimgrey': (105, 105, 105), + 'dodgerblue': (30, 144, 255), + 'firebrick': (178, 34, 34), + 'floralwhite': (255, 250, 240), + 'forestgreen': (34, 139, 34), + 'fuchsia': (255, 0, 255), + 'gainsboro': (220, 220, 220), + 'ghostwhite': (248, 248, 255), + 'gold': (255, 215, 0), + 'goldenrod': (218, 165, 32), + 'gray': (128, 128, 128), + 'green': (0, 128, 0), + 'greenyellow': (173, 255, 47), + 'grey': (128, 128, 128), + 'honeydew': (240, 255, 240), + 'hotpink': (255, 105, 180), + 'indianred': (205, 92, 92), + 'indigo': (75, 0, 130), + 'ivory': (255, 255, 240), + 'khaki': (240, 230, 140), + 'lavender': (230, 230, 250), + 'lavenderblush': (255, 240, 245), + 'lawngreen': (124, 252, 0), + 'lemonchiffon': (255, 250, 205), + 'lightblue': (173, 216, 230), + 'lightcoral': (240, 128, 128), + 'lightcyan': (224, 255, 255), + 'lightgoldenrodyellow': (250, 250, 210), + 'lightgray': (211, 211, 211), + 'lightgreen': (144, 238, 144), + 'lightgrey': (211, 211, 211), + 'lightpink': (255, 182, 193), + 'lightsalmon': (255, 160, 122), + 'lightseagreen': (32, 178, 170), + 'lightskyblue': (135, 206, 250), + 'lightslategray': (119, 136, 153), + 'lightslategrey': (119, 136, 153), + 'lightsteelblue': (176, 196, 222), + 'lightyellow': (255, 255, 224), + 'lime': (0, 255, 0), + 'limegreen': (50, 205, 50), + 'linen': (250, 240, 230), + 'magenta': (255, 0, 255), + 'maroon': (128, 0, 0), + 'mediumaquamarine': (102, 205, 170), + 'mediumblue': (0, 0, 205), + 'mediumorchid': (186, 85, 211), + 'mediumpurple': (147, 112, 219), + 'mediumseagreen': (60, 179, 113), + 'mediumslateblue': (123, 104, 238), + 'mediumspringgreen': (0, 250, 154), + 'mediumturquoise': (72, 209, 204), + 'mediumvioletred': (199, 21, 133), + 'midnightblue': (25, 25, 112), + 'mintcream': (245, 255, 250), + 'mistyrose': (255, 228, 225), + 'moccasin': (255, 228, 181), + 'navajowhite': (255, 222, 173), + 'navy': (0, 0, 128), + 'oldlace': (253, 245, 230), + 'olive': (128, 128, 0), + 'olivedrab': (107, 142, 35), + 'orange': (255, 165, 0), + 'orangered': (255, 69, 0), + 'orchid': (218, 112, 214), + 'palegoldenrod': (238, 232, 170), + 'palegreen': (152, 251, 152), + 'paleturquoise': (175, 238, 238), + 'palevioletred': (219, 112, 147), + 'papayawhip': (255, 239, 213), + 'peachpuff': (255, 218, 185), + 'peru': (205, 133, 63), + 'pink': (255, 192, 203), + 'plum': (221, 160, 221), + 'powderblue': (176, 224, 230), + 'purple': (128, 0, 128), + 'red': (255, 0, 0), + 'rosybrown': (188, 143, 143), + 'royalblue': (65, 105, 225), + 'saddlebrown': (139, 69, 19), + 'salmon': (250, 128, 114), + 'sandybrown': (244, 164, 96), + 'seagreen': (46, 139, 87), + 'seashell': (255, 245, 238), + 'sienna': (160, 82, 45), + 'silver': (192, 192, 192), + 'skyblue': (135, 206, 235), + 'slateblue': (106, 90, 205), + 'slategray': (112, 128, 144), + 'slategrey': (112, 128, 144), + 'snow': (255, 250, 250), + 'springgreen': (0, 255, 127), + 'steelblue': (70, 130, 180), + 'tan': (210, 180, 140), + 'teal': (0, 128, 128), + 'thistle': (216, 191, 216), + 'tomato': (255, 99, 71), + 'turquoise': (64, 224, 208), + 'violet': (238, 130, 238), + 'wheat': (245, 222, 179), + 'white': (255, 255, 255), + 'whitesmoke': (245, 245, 245), + 'yellow': (255, 255, 0), + 'yellowgreen': (154, 205, 50), +} + +COLORS_BY_VALUE = {v: k for k, v in COLORS_BY_NAME.items()} |