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"""
Generate a palette using various backends.
"""
import re
import os
from . import backends
from . import util
from .settings import CACHE_DIR, __cache_version__
def get(backend_type="wal"):
"""Get backend function name from name."""
return {
"colorthief": backends.colorthief.get,
"colorz": backends.colorz.get,
"wal": backends.wal.get,
}.get(backend_type, backends.wal.get)
def list_backends():
"""List color backends."""
# TODO: Dynamically generate this.
return "colorthief, colorz, wal"
def gen(img, light=False, backend="wal", cache_dir=CACHE_DIR):
"""Generate a palette."""
# home_dylan_img_jpg_backend_1.2.2.json
color_type = "light" if light else "dark"
cache_file = re.sub("[/|\\|.]", "_", img)
cache_file = os.path.join(cache_dir, "schemes", "%s_%s_%s_%s.json"
% (cache_file, color_type,
backend, __cache_version__))
if os.path.isfile(cache_file):
colors = file(cache_file)
util.Color.alpha_num = colors["alpha"]
print("colors: Found cached colorscheme.")
else:
print("wal: Generating a colorscheme...")
colors = get(backend)(img, light)
util.save_file_json(colors, cache_file)
print("wal: Generation complete.")
return colors
def file(input_file):
"""Import colorscheme from json file."""
data = util.read_file_json(input_file)
if "wallpaper" not in data:
data["wallpaper"] = "None"
if "alpha" not in data:
data["alpha"] = "100"
return data
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