mabox-colorizer/bin/gtkcolors.py

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2023-09-09 09:18:19 +02:00
#!/usr/bin/env python3
"""
Based on labwc-gtktheme.py:
Create labwc theme based on the current Gtk theme
SPDX-License-Identifier: GPL-2.0-only
Copyright (C) @Misko_2083 2019
Copyright (C) Johan Malm 2019-2022
"""
import os
import errno
from tokenize import tokenize, NUMBER, NAME, OP
from io import BytesIO
import gi
gi.require_version("Gtk", "3.0")
from gi.repository import Gtk
def parse(tokens):
"""
Parse css color expression token list and return red/green/blue values
Valid name-tokens include 'rgb' and 'rgba', whereas 'alpha', 'shade' and
'mix' are ignored. @other-color references are still to be implemented.
"""
nr_colors_to_parse = 0
in_label = False
color = []
for toknum, tokval, _, _, _ in tokens:
if '@' in tokval:
in_label = True
continue
if toknum == NAME and in_label:
color.clear()
color.append(f"@{tokval}")
return color
if nr_colors_to_parse > 0:
if toknum == OP and tokval in ')':
print("warn: still parsing numbers; did not expect ')'")
if toknum == NUMBER:
color.append(tokval)
nr_colors_to_parse -= 1
continue
if toknum == NAME and tokval in 'rgb':
nr_colors_to_parse = 3
elif toknum == NAME and tokval in 'rgba':
nr_colors_to_parse = 4
return color
def color_hex(color):
""" return rrggbb color hex from list [r, g, b,...] """
if not color:
return "None"
elif len(color) < 3:
return f"{color[0]}"
return '{:02x}{:02x}{:02x}'.format(*(int(x) for x in color[:3]))
def hex_from_expr(line):
""" parse color expression to return hex style rrggbb """
tokens = tokenize(BytesIO(line.encode('utf-8')).readline)
color = parse(tokens)
return color_hex(color)
def parse_section(lines, name):
theme = {}
inside = False
for line in lines:
if f"{name} {{" in line:
inside = True
continue
if inside:
if "}" in line or "{" in line:
inside = False
break
if 'color' not in line:
continue
key, value = line.strip().split(":", maxsplit=1)
theme[f'{name}.{key.replace(" ", "")}'] = hex_from_expr(value)
return theme
def resolve_labels(theme):
for key, label in theme.items():
if '@' in label:
for tmp, value in theme.items():
if tmp == label[1:]:
theme[key] = value
return resolve_labels(theme)
return theme
def main():
""" main """
gset = Gtk.Settings.get_default()
themename = gset.get_property("gtk-theme-name")
css = Gtk.CssProvider.get_named(themename).to_string()
lines = css.split("\n")
theme = {}
# Parse @define-color lines using syntax "@define-color <key> <value>"
for line in lines:
if "@define-color" not in line:
continue
x = line.split(" ", maxsplit=2)
theme[x[1]] = hex_from_expr(x[2])
# Add the color definitions in the headerbar{} and menu{} sections
theme |= parse_section(lines, "headerbar")
theme |= parse_section(lines, "menu")
theme = resolve_labels(theme)
for key, value in theme.items():
print(f"{key}: {value}")
return
if __name__ == '__main__':
main()