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"""
Generate a colorscheme using fast_colorthief.
"""
import logging
import sys
try:
import fast_colorthief
except ImportError:
logging.error("fast_colorthief wasn't found on your system.")
logging.error("Try another backend. (wal --backend)")
sys.exit(1)
from .. import util
def gen_colors(img):
""" Ask backend to generate 16 colors. """
raw_colors = fast_colorthief.get_palette(img, 16)
return [util.rgb_to_hex(color) for color in raw_colors]
def adjust(cols, light):
"""Create palette."""
cols.sort(key=util.rgb_to_yiq)
raw_colors = [*cols, *cols]
if light:
raw_colors[0] = util.lighten_color(cols[0], 0.90)
raw_colors[7] = util.darken_color(cols[0], 0.75)
else:
for color in raw_colors:
color = util.lighten_color(color, 0.40)
raw_colors[0] = util.darken_color(cols[0], 0.80)
raw_colors[7] = util.lighten_color(cols[0], 0.60)
raw_colors[8] = util.lighten_color(cols[0], 0.20)
raw_colors[15] = raw_colors[7]
return raw_colors
def get(img, light=False):
"""Get colorscheme."""
cols = gen_colors(img)
return adjust(cols, light)
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