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# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
# DEALINGS IN THE SOFTWARE.
"""
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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