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https://github.com/dylanaraps/pywal.git
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578 lines
15 KiB
Python
Executable File
578 lines
15 KiB
Python
Executable File
#!/usr/bin/env python
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"""
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wal - Generate and change colorschemes on the fly.
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Created by Dylan Araps.
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"""
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import argparse
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import os
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import pathlib
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import random
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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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# Internal variables.
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VERSION = "0.1"
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COLOR_COUNT = 16
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CACHE_DIR = pathlib.Path.home() / ".cache/wal/"
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# pylint: disable=too-few-public-methods
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class ColorType(object):
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"""Store colors in various formats."""
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plain = []
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xrdb = []
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sequences = []
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shell = []
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scss = []
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css = [":root {"]
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putty = [
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"Windows Registry Editor Version 5.00",
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"[HKEY_CURRENT_USER\\Software\\SimonTatham\\PuTTY\\Sessions\\Wal]",
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]
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# pylint: disable=too-few-public-methods
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class Args(object):
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"""Store args."""
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notify = True
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# ARGS {{{
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def get_args():
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"""Get the script arguments."""
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description = "wal - Generate colorschemes on the fly"
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arg = argparse.ArgumentParser(description=description)
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# Add the args.
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arg.add_argument("-c", action="store_true",
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help="Delete all cached colorschemes.")
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arg.add_argument("-i", metavar="\"/path/to/img.jpg\"",
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help="Which image or directory to use.")
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arg.add_argument("-n", action="store_true",
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help="Skip setting the wallpaper.")
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arg.add_argument("-o", metavar="\"script_name\"",
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help="External script to run after \"wal\".")
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arg.add_argument("-q", action="store_true",
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help="Quiet mode, don\"t print anything and \
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don't display notifications.")
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arg.add_argument("-r", action="store_true",
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help="Reload current colorscheme.")
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arg.add_argument("-t", action="store_true",
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help="Fix artifacts in VTE Terminals. \
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(Termite, xfce4-terminal)")
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arg.add_argument("-v", action="store_true",
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help="Print \"wal\" version.")
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return arg.parse_args()
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def process_args(args):
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"""Process args."""
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# If no args were passed.
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if not len(sys.argv) > 1:
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print("error: wal needs to be given arguments to run.\n"
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" Refer to \"wal -h\" for more info.")
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exit(1)
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# -q
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if args.q:
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sys.stdout = sys.stderr = open(os.devnull, "w")
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Args.notify = False
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# -c
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if args.c:
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shutil.rmtree(CACHE_DIR / "schemes")
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create_cache_dir()
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# -r
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if args.r:
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reload_colors(args.t)
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# -v
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if args.v:
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print(f"wal {VERSION}")
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exit(0)
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# -i
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if args.i:
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image = get_image(args.i)
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ColorType.plain = get_colors(image)
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if not args.n:
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set_wallpaper(image)
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# Set the colors.
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send_sequences(ColorType.plain, args.t)
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export_colors(ColorType.plain)
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# -o
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if args.o:
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disown(args.o)
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# }}}
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# COLORSCHEME GENERATION {{{
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def get_image(img):
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"""Validate image input."""
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# Check if the user has Imagemagick installed.
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if not shutil.which("convert"):
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print("error: imagemagick not found, exiting...\n"
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"error: wal requires imagemagick to function.")
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exit(1)
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image = pathlib.Path(img)
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if image.is_file():
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wal_img = image
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# Pick a random image from the directory.
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elif image.is_dir():
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file_types = (".png", ".jpg", ".jpeg", ".jpe", ".gif")
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# Get the filename of the current wallpaper.
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current_img = pathlib.Path(CACHE_DIR / "wal")
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if current_img.is_file():
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current_img = read_file(current_img)
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current_img = os.path.basename(current_img[0])
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# Get a list of images.
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images = [img for img in os.listdir(image)
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if img.endswith(file_types) and
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img != current_img]
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wal_img = random.choice(images)
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wal_img = pathlib.Path(image / wal_img)
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else:
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print("error: No valid image file found.")
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exit(1)
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print("image: Using image", wal_img)
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return str(wal_img)
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def imagemagick(color_count, img):
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"""Call Imagemagick to generate a scheme."""
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colors = subprocess.Popen(["convert", img, "+dither", "-colors",
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str(color_count), "-unique-colors", "txt:-"],
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stdout=subprocess.PIPE)
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return colors.stdout.readlines()
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def gen_colors(img):
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"""Generate a color palette using imagemagick."""
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# Generate initial scheme.
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raw_colors = imagemagick(COLOR_COUNT, img)
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# If imagemagick finds less than 16 colors, use a larger source number
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# of colors.
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index = 0
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while len(raw_colors) - 1 < COLOR_COUNT:
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index += 1
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raw_colors = imagemagick(COLOR_COUNT + index, img)
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print("colors: Imagemagick couldn't generate a", COLOR_COUNT,
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"color palette, trying a larger palette size",
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COLOR_COUNT + index)
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# Remove the first element, which isn't a color.
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del raw_colors[0]
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# Create a list of hex colors.
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return [re.search("#.{6}", str(col)).group(0) for col in raw_colors]
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def get_colors(img):
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"""Generate a colorscheme using imagemagick."""
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# Cache the wallpaper name.
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save_file(img, CACHE_DIR / "wal")
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# Cache the sequences file.
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cache_file = pathlib.Path(CACHE_DIR / "schemes" / img.replace("/", "_"))
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if cache_file.is_file():
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colors = read_file(cache_file)
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print("colors: Found cached colorscheme.")
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else:
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print("colors: Generating a colorscheme...")
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notify("wal: Generating a colorscheme...")
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# Generate the colors.
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colors = gen_colors(img)
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colors = sort_colors(colors)
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# Cache the colorscheme.
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save_file("\n".join(colors), cache_file)
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print("colors: Generated colorscheme")
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notify("wal: Generation complete.")
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return colors
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def sort_colors(colors):
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"""Sort the generated colors."""
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sorted_colors = []
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sorted_colors.append(colors[0])
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sorted_colors.append(colors[9])
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sorted_colors.append(colors[10])
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sorted_colors.append(colors[11])
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sorted_colors.append(colors[12])
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sorted_colors.append(colors[13])
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sorted_colors.append(colors[14])
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sorted_colors.append(colors[15])
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sorted_colors.append(set_grey(colors))
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sorted_colors.append(colors[9])
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sorted_colors.append(colors[10])
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sorted_colors.append(colors[11])
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sorted_colors.append(colors[12])
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sorted_colors.append(colors[13])
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sorted_colors.append(colors[14])
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sorted_colors.append(colors[15])
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return sorted_colors
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# }}}
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# SEND SEQUENCES {{{
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def set_special(index, color):
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"""Build the escape sequence for special colors."""
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ColorType.sequences.append(f"\\033]{index};{color}\\007")
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if index == 10:
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ColorType.xrdb.append(f"URxvt*foreground: {color}")
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ColorType.xrdb.append(f"XTerm*foreground: {color}")
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elif index == 11:
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ColorType.xrdb.append(f"URxvt*background: {color}")
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ColorType.xrdb.append(f"XTerm*background: {color}")
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elif index == 12:
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ColorType.xrdb.append(f"URxvt*cursorColor: {color}")
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ColorType.xrdb.append(f"XTerm*cursorColor: {color}")
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def set_color(index, color):
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"""Build the escape sequence we need for each color."""
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ColorType.xrdb.append(f"*.color{index}: {color}")
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ColorType.xrdb.append(f"*color{index}: {color}")
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ColorType.sequences.append(f"\\033]4;{index};{color}\\007")
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ColorType.shell.append(f"color{index}='{color}'")
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ColorType.css.append(f"\t--color{index}: {color};")
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ColorType.scss.append(f"$color{index}: {color};")
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rgb = hex_to_rgb(color)
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ColorType.putty.append(f"\"Colour{index}\"=\"{rgb}\"")
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def set_grey(colors):
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"""Set a grey color based on brightness of color0."""
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return {
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0: "#666666",
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1: "#666666",
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2: "#757575",
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3: "#999999",
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4: "#999999",
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5: "#8a8a8a",
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6: "#a1a1a1",
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7: "#a1a1a1",
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8: "#a1a1a1",
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9: "#a1a1a1",
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}.get(int(colors[0][1]), colors[7])
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def send_sequences(colors, vte):
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"""Send colors to all open terminals."""
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set_special(10, colors[15])
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set_special(11, colors[0])
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set_special(12, colors[15])
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set_special(13, colors[15])
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set_special(14, colors[0])
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# This escape sequence doesn"t work in VTE terminals.
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if not vte:
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set_special(708, colors[0])
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# Create the sequences.
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# pylint: disable=W0106
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[set_color(num, color) for num, color in enumerate(colors)]
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# Set a blank color that isn"t affected by bold highlighting.
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set_color(66, colors[0])
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# Make the terminal interpret escape sequences.
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sequences = fix_escape("".join(ColorType.sequences))
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# Get a list of terminals.
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terminals = [f"/dev/pts/{term}" for term in os.listdir("/dev/pts/")
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if len(term) < 4]
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terminals.append(CACHE_DIR / "sequences")
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# Send the sequences to all open terminals.
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# pylint: disable=W0106
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[save_file(sequences, term) for term in terminals]
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print("colors: Set terminal colors")
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# }}}
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# WALLPAPER SETTING {{{
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def get_desktop_env():
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"""Identify the current running desktop environment."""
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desktop = os.getenv("XDG_CURRENT_DESKTOP")
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if desktop:
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return desktop
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desktop = os.getenv("DESKTOP_SESSION")
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if desktop:
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return desktop
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desktop = os.getenv("GNOME_DESKTOP_SESSION_ID")
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if desktop:
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return "GNOME"
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desktop = os.getenv("MATE_DESKTOP_SESSION_ID")
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if desktop:
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return "MATE"
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def xfconf(path, img):
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"""Call xfconf to set the wallpaper on XFCE."""
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subprocess.Popen(["xfconf-query", "--channel", "xfce4-desktop",
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"--property", path, "--set", img])
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def set_desktop_wallpaper(desktop, img):
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"""Set the wallpaper for the desktop environment."""
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desktop = str(desktop).lower()
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if "xfce" in desktop or "xubuntu" in desktop:
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# XFCE requires two commands since they differ between versions.
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xfconf("/backdrop/screen0/monitor0/image-path", img)
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xfconf("/backdrop/screen0/monitor0/workspace0/last-image", img)
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elif "muffin" in desktop or "cinnamon" in desktop:
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subprocess.Popen(["gsettings", "set",
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"org.cinnamon.desktop.background",
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"picture-uri", "file:///" + img])
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elif "gnome" in desktop:
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subprocess.Popen(["gsettings", "set",
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"org.gnome.desktop.background",
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"picture-uri", "file:///" + img])
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elif "mate" in desktop:
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subprocess.Popen(["gsettings", "set", "org.mate.background",
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"picture-filename", img])
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def set_wallpaper(img):
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"""Set the wallpaper."""
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desktop = get_desktop_env()
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if desktop:
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set_desktop_wallpaper(desktop, img)
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else:
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if shutil.which("feh"):
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subprocess.Popen(["feh", "--bg-fill", img])
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elif shutil.which("nitrogen"):
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subprocess.Popen(["nitrogen", "--set-zoom-fill", img])
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elif shutil.which("bgs"):
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subprocess.Popen(["bgs", img])
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elif shutil.which("hsetroot"):
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subprocess.Popen(["hsetroot", "-fill", img])
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elif shutil.which("habak"):
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subprocess.Popen(["habak", "-mS", img])
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else:
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print("error: No wallpaper setter found.")
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return
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print("wallpaper: Set the new wallpaper")
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return 0
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# }}}
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# EXPORT COLORS {{{
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def save_colors(colors, export_file, message):
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"""Export colors to var format."""
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colors = "\n".join(colors)
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save_file(f"{colors}\n", CACHE_DIR / export_file)
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print(f"export: exported {message}.")
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def export_rofi(colors):
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"""Append rofi colors to the x_colors list."""
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ColorType.xrdb.append(f"rofi.color-window: {colors[0]}, "
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f"{colors[0]}, {colors[10]}")
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ColorType.xrdb.append(f"rofi.color-normal: {colors[0]}, "
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f"{colors[15]}, {colors[0]}, "
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f"{colors[10]}, {colors[0]}")
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ColorType.xrdb.append(f"rofi.color-active: {colors[0]}, "
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f"{colors[15]}, {colors[0]}, "
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f"{colors[10]}, {colors[0]}")
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ColorType.xrdb.append(f"rofi.color-urgent: {colors[0]}, "
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f"{colors[9]}, {colors[0]}, "
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f"{colors[9]}, {colors[15]}")
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def export_emacs(colors):
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"""Set emacs colors."""
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ColorType.xrdb.append(f"emacs*background: {colors[0]}")
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ColorType.xrdb.append(f"emacs*foreground: {colors[15]}")
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def reload_xrdb(export_file):
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"""Merge the colors into the X db so new terminals use them."""
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if shutil.which("xrdb"):
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subprocess.call(["xrdb", "-merge", CACHE_DIR / export_file])
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def reload_i3():
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"""Reload i3 colors."""
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if shutil.which("i3-msg"):
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disown("i3-msg", "reload")
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def export_colors(colors):
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"""Export colors in various formats."""
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save_colors(ColorType.plain, "colors", "plain hex colors")
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save_colors(ColorType.shell, "colors.sh", "shell variables")
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# Web based colors.
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ColorType.css.append("}")
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save_colors(ColorType.css, "colors.css", "css variables")
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save_colors(ColorType.scss, "colors.scss", "scss variables")
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# Text editor based colors.
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save_colors(ColorType.putty, "colors-putty.reg", "putty theme")
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# X based colors.
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export_rofi(colors)
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export_emacs(colors)
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save_colors(ColorType.xrdb, "xcolors", "xrdb colors")
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# i3 colors.
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reload_xrdb("xcolors")
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reload_i3()
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# }}}
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# OTHER FUNCTIONS {{{
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def reload_colors(vte):
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"""Reload colors."""
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sequence_file = pathlib.Path(CACHE_DIR / "sequences")
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if sequence_file.is_file():
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sequences = "".join(read_file(sequence_file))
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# If vte mode was used, remove the problem sequence.
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if vte:
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sequences = re.sub(r"\]708;\#.{6}", "", sequences)
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# Make the terminal interpret escape sequences.
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print(fix_escape(sequences), end="")
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exit(0)
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def read_file(input_file):
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"""Read colors from a file."""
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return open(input_file).read().splitlines()
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def save_file(colors, export_file):
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"""Write the colors to the file."""
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with open(export_file, "w") as file:
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file.write(colors)
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def create_cache_dir():
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"""Alias to create the cache dir."""
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pathlib.Path(CACHE_DIR / "schemes").mkdir(parents=True, exist_ok=True)
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def hex_to_rgb(color):
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"""Convert a hex color to rgb."""
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red, green, blue = list(bytes.fromhex(color.strip("#")))
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return f"{red},{green},{blue}"
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def fix_escape(string):
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"""Decode a string."""
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return bytes(string, "utf-8").decode("unicode_escape")
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def notify(msg):
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"""Send arguements to notify-send."""
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if shutil.which("notify-send") and Args.notify:
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subprocess.Popen(["notify-send", msg],
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stdout=subprocess.DEVNULL,
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stderr=subprocess.DEVNULL,
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preexec_fn=os.setpgrp)
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def disown(*cmd):
|
||
"""Call a system command in the background,
|
||
disown it and hide it's output."""
|
||
subprocess.Popen(["nohup"] + list(cmd),
|
||
stdout=subprocess.DEVNULL,
|
||
stderr=subprocess.DEVNULL,
|
||
preexec_fn=os.setpgrp)
|
||
|
||
|
||
# }}}
|
||
|
||
|
||
def main():
|
||
"""Main script function."""
|
||
create_cache_dir()
|
||
args = get_args()
|
||
process_args(args)
|
||
|
||
# This saves 10ms.
|
||
# pylint: disable=W0212
|
||
# os._exit(0)
|
||
|
||
|
||
main()
|