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"""
Generate a colorscheme using ColorThief.
"""
import logging
import sys
try:
from colorthief import ColorThief
except ImportError:
logging.error("ColorThief wasn't found on your system.")
logging.error("Try another backend. (wal --backend)")
sys.exit(1)
from .. import util
def gen_colors(img):
"""Loop until 16 colors are generated."""
color_cmd = ColorThief(img).get_palette
for i in range(0, 10, 1):
raw_colors = color_cmd(color_count=8 + i)
if len(raw_colors) >= 8:
break
if i == 10:
logging.error("ColorThief couldn't generate a suitable palette.")
sys.exit(1)
else:
logging.warning("ColorThief couldn't generate a palette.")
logging.warning("Trying a larger palette size %s", 8 + i)
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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