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79 lines
2.1 KiB
Python
79 lines
2.1 KiB
Python
"""
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Generate a colorscheme using imagemagick.
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"""
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import logging
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import re
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import shutil
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import subprocess
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import sys
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from .. import util
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def imagemagick(color_count, img, magick_command):
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"""Call Imagemagick to generate a scheme."""
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flags = ["-resize", "25%", "-colors", str(color_count),
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"-unique-colors", "txt:-"]
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img += "[0]"
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return subprocess.check_output([*magick_command, img, *flags]).splitlines()
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def has_im():
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"""Check to see if the user has im installed."""
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if shutil.which("magick"):
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return ["magick", "convert"]
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elif shutil.which("convert"):
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return ["convert"]
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logging.error("Imagemagick wasn't found on your system.")
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logging.error("Try another backend. (wal --backend)")
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sys.exit(1)
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def gen_colors(img):
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"""Format the output from imagemagick into a list
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of hex colors."""
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raw_colors = imagemagick(20, img, has_im())
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if len(raw_colors) < 16:
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logging.error("Imagemagick couldn't generate a palette.")
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logging.error("Try a different image or backend.")
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sys.exit(1)
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return [re.search("#.{6}", str(col)).group(0) for col in raw_colors[1:]]
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def adjust(colors, light):
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"""Adjust the generated colors and store them in a dict that
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we will later save in json format."""
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raw_colors = colors[:1] + colors[8:16] + colors[8:-1]
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# Manually adjust colors.
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if light:
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for color in raw_colors:
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color = util.saturate_color(color, 0.5)
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raw_colors[0] = util.lighten_color(colors[-1], 0.85)
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raw_colors[7] = colors[0]
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raw_colors[8] = util.darken_color(colors[-1], 0.4)
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raw_colors[15] = colors[0]
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else:
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# Darken the background color slightly.
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if raw_colors[0][1] != "0":
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raw_colors[0] = util.darken_color(raw_colors[0], 0.40)
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raw_colors[7] = util.blend_color(raw_colors[7], "#EEEEEE")
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raw_colors[8] = util.darken_color(raw_colors[7], 0.30)
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raw_colors[15] = util.blend_color(raw_colors[15], "#EEEEEE")
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return raw_colors
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def get(img, light=False):
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"""Get colorscheme."""
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colors = gen_colors(img)
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return adjust(colors, light)
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