100 lines
3.9 KiB
Python
100 lines
3.9 KiB
Python
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#!/usr/bin/env python3
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#
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# Copyright (C) [2021] [Matt Cottam], [mpcottam@raincloud.co.uk]
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#
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##############################################################################
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# Grey To Mono Alpha *** Convert Greys to Monochrome with varying Opacity
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##############################################################################
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import math
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import inkex
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from inkex import Color
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# Python Standard Libary
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from statistics import mean
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def get_attributes(self):
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for att in dir(self):
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inkex.errormsg((att, getattr(self, att)))
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def rgba_to_bw_rgba(self, my_objects):
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apply_to = self.options.apply_to_type_radio
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mono_color = self.options.color_picker_mono.to_rgba()
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opacity_lower_threshold = self.options.opacity_lower_threshold
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opacity_upper_threshold = self.options.opacity_upper_threshold
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opacity_range = opacity_upper_threshold - opacity_lower_threshold
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for my_object in my_objects:
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if 'fill' in apply_to and ('fill:none' not in str(my_object.style)):
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my_fill_color = my_object.style.get_color(name='fill').to_rgba()
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my_fill_color_red = my_fill_color[0]
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my_fill_color_green = my_fill_color[1]
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my_fill_color_blue = my_fill_color[2]
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mean_fill_component_value = mean([my_fill_color_red, my_fill_color_blue, my_fill_color_green])
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if mean_fill_component_value > 0:
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mono_opacity = (1 - (mean_fill_component_value / 256)) * opacity_range
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mono_opacity = mono_opacity + opacity_lower_threshold
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else:
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mono_opacity = opacity_upper_threshold
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my_object.style['fill'] = str(mono_color)
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my_object.style['fill-opacity'] = str(mono_opacity)
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if 'stroke' in apply_to and (';stroke:none' not in str(my_object.style)) and ('stroke:' in str(my_object.style)):
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my_stroke_color = my_object.style.get_color(name='stroke').to_rgba()
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my_stroke_color_red = my_stroke_color[0]
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my_stroke_color_green = my_stroke_color[1]
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my_stroke_color_blue = my_stroke_color[2]
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mean_stroke_component_value = mean([my_stroke_color_red, my_stroke_color_blue, my_stroke_color_green])
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if mean_stroke_component_value > 0:
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mono_opacity = (1 - (mean_stroke_component_value / 256)) * opacity_range
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mono_opacity = mono_opacity + opacity_lower_threshold
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else:
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mono_opacity = opacity_upper_threshold
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my_object.style['stroke'] = str(mono_color)
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my_object.style['stroke-opacity'] = str(mono_opacity)
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class GreyToMonoAlpha(inkex.EffectExtension):
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def add_arguments(self, pars):
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pars.add_argument("--tab")
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pars.add_argument("--color_picker_mono", type=inkex.colors.Color, default=0)
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pars.add_argument("--apply_to_type_radio", default=None)
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pars.add_argument("--opacity_lower_threshold", type=float, default=0)
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pars.add_argument("--opacity_upper_threshold", type=float, default=1)
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def effect(self):
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my_objects = self.svg.selected
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if len(my_objects) < 1:
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self.msg('Please select some paths first.')
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return
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rgba_to_bw_rgba(self, my_objects)
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if __name__ == '__main__':
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GreyToMonoAlpha().run()
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