kopia lustrzana https://github.com/inkstitch/inkstitch
152 wiersze
4.8 KiB
Python
152 wiersze
4.8 KiB
Python
# Authors: see git history
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#
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# Copyright (c) 2010 Authors
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# Licensed under the GNU GPL version 3.0 or later. See the file LICENSE for details.
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import colorsys
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import re
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import tinycss2.color3
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from pyembroidery.EmbThread import EmbThread
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from inkex import Color
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class ThreadColor(object):
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hex_str_re = re.compile('#([0-9a-z]{3}|[0-9a-z]{6})', re.I)
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def __init__(self, color, name=None, number=None, manufacturer=None, description=None, chart=None):
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# set colors with a gradient to black (avoiding an error message)
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if type(color) == str and color.startswith('url'):
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color = None
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if color is None:
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self.rgb = (0, 0, 0)
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elif isinstance(color, EmbThread):
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self.name = color.description
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self.number = color.catalog_number
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self.manufacturer = color.brand
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self.description = color.description
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self.chart = color.chart
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self.rgb = (color.get_red(), color.get_green(), color.get_blue())
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return
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elif isinstance(color, str):
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self.rgb = tinycss2.color3.parse_color(color)
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# remove alpha channel and multiply with 255
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self.rgb = tuple(channel * 255.0 for channel in list(self.rgb)[:-1])
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elif isinstance(color, (list, tuple)):
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self.rgb = tuple(color)
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elif self.hex_str_re.match(color):
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self.rgb = Color.parse_str(color)[1]
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else:
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raise ValueError("Invalid color: " + repr(color))
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self.name = name
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self.number = number
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self.manufacturer = manufacturer
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self.description = description
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self.chart = chart
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def __json__(self):
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jsonified = self._as_dict()
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jsonified["visible_on_white"] = self.visible_on_white._as_dict()
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return jsonified
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def _as_dict(self):
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return dict(name=self.name,
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number=self.number,
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manufacturer=self.manufacturer,
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description=self.description,
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chart=self.chart,
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rgb=self.rgb,
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hex=self.to_hex_str(),
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)
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def __eq__(self, other):
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if isinstance(other, ThreadColor):
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return self.rgb == other.rgb
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else:
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return self == ThreadColor(other)
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def __hash__(self):
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return hash(self.rgb)
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def __ne__(self, other):
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return not (self == other)
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def __repr__(self):
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return "ThreadColor" + repr(self.rgb)
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def to_hex_str(self):
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return "#%s" % self.hex_digits
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@property
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def pyembroidery_thread(self):
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return {
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"name": self.name,
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"id": self.number,
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"manufacturer": self.manufacturer,
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"description": self.description,
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"chart": self.chart,
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"rgb": int(self.hex_digits, 16),
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}
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@property
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def hex_digits(self):
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return "%02X%02X%02X" % tuple([int(x) for x in self.rgb])
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@property
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def rgb_normalized(self):
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return tuple(channel / 255.0 for channel in self.rgb)
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@property
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def font_color(self):
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"""Pick a color that will allow text to show up on a swatch in the printout."""
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hls = colorsys.rgb_to_hls(*self.rgb_normalized)
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# We'll use white text unless the swatch color is too light.
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if hls[1] > 0.7:
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return (1, 1, 1)
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else:
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return (254, 254, 254)
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@property
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def visible_on_white(self):
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"""A ThreadColor similar to this one but visible on white.
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If the thread color is white, we don't want to try to draw white in the
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simulation view or print white in the print-out. Choose a color that's
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as close as possible to the actual thread color but is still at least
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somewhat visible on a white background.
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"""
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hls = list(colorsys.rgb_to_hls(*self.rgb_normalized))
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# Capping lightness should make the color visible without changing it
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# too much.
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if hls[1] > 0.85:
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hls[1] = 0.85
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color = colorsys.hls_to_rgb(*hls)
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# convert back to values in the range of 0-255
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color = tuple(value * 255 for value in color)
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return ThreadColor(color, name=self.name, number=self.number, manufacturer=self.manufacturer, description=self.description, chart=self.chart)
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@property
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def darker(self):
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hls = list(colorsys.rgb_to_hls(*self.rgb_normalized))
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# Capping lightness should make the color visible without changing it
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# too much.
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hls[1] *= 0.75
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color = colorsys.hls_to_rgb(*hls)
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# convert back to values in the range of 0-255
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color = tuple(value * 255 for value in color)
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return ThreadColor(color, name=self.name, number=self.number, manufacturer=self.manufacturer, description=self.description, chart=self.chart)
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