Merge pull request #53 from imarkoff/unstable

Ability to install GDM theming on Ubuntu
This commit is contained in:
Vladyslav Hroshev
2025-04-04 20:55:43 +03:00
committed by GitHub
8 changed files with 361 additions and 200 deletions

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@@ -14,7 +14,8 @@ Shell theme for GNOME DE. Based on https://www.pling.com/p/1939902/.
<details><summary>Click me 🐈</summary>
Icon theme: https://github.com/vinceliuice/Colloid-icon-theme
#### Overview [[Blur My Shell](https://extensions.gnome.org/extension/3193/blur-my-shell/) / Light / Dark] ([Neon Gas Station](https://www.heroscreen.cc/2025/03/neon-gas-station-4k-wallpaper.html))
#### Overview [[Blur My Shell](https://extensions.gnome.org/extension/3193/blur-my-shell/) / Light / Dark] ([Neon Gas Station](https://www.heroscreen.cc/2025/03/neon-gas-station-4k-wallpaper.html) - AI Generated)
![Overview with Blur My Shell](./readme-images/overview_blur-my-shell.png?raw=true "Overview with Blur My Shell")
![Overview in light mode](./readme-images/overview_light.png?raw=true "Overview in light mode")
![Overview in dark mode](./readme-images/overview_dark.png?raw=true "Overview in dark mode")
@@ -26,7 +27,7 @@ Icon theme: https://github.com/vinceliuice/Colloid-icon-theme
#### Modal dialog ([Wide Angle Photography of Mountain](https://www.pexels.com/photo/wide-angle-photography-of-mountain-1612559/))
![Modal dialog look](./readme-images/modal.png?raw=true "Modal dialog look")
#### Calendar & notifications ([Neon Gas Station](https://www.heroscreen.cc/2025/03/neon-gas-station-4k-wallpaper.html))
#### Calendar & notifications
![Calendar & notifications look](./readme-images/datemenu.png?raw=true)
#### Dash ([Dash To Dock](https://extensions.gnome.org/extension/307/dash-to-dock/ "Dash To Dock"))
@@ -43,7 +44,7 @@ Icon theme: https://github.com/vinceliuice/Colloid-icon-theme
## 🚧 Requirements
- GNOME 42-48. Correct functionality on other versions is not guaranteed.
- [User Themes](https://extensions.gnome.org/extension/19/user-themes/ "User Themes") extension.
- Python 3.9+.
- Python 3.10 or higher.
## 💡 Installation
@@ -56,7 +57,7 @@ Icon theme: https://github.com/vinceliuice/Colloid-icon-theme
git clone https://github.com/imarkoff/Marble-shell-theme.git
cd Marble-shell-theme
```
3. Run the program (install all accent colors, light & dark mode):
3. Run the program (install all accent colors, light and dark mode):
```shell
python install.py -a
```
@@ -86,9 +87,6 @@ If you want to remove the theme, see the [uninstallation](#%EF%B8%8F-uninstallat
>
> **Config:** `sudo python install.py --gdm --blue --filled --gdm-image /path/to/image.jpg --gdm-blur=40 --gdm-darken=30`
> [!NOTE]
> This theme only supports GNOME Display Manager. Ubuntu Display Manager is currently not supported.
> [!WARNING]
> I am not responsible for any damage caused by the installation of the theme. If you have any problems, please open an issue.

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@@ -1,3 +1,4 @@
import os.path
from tempfile import gettempdir
# folder definitions
@@ -13,6 +14,7 @@ scripts_folder = "scripts"
# GDM definitions
global_gnome_shell_theme = "/usr/share/gnome-shell"
gnome_shell_gresource = "gnome-shell-theme.gresource"
ubuntu_gresource_link = "gtk-theme.gresource"
extracted_gdm_folder = "theme"
# files definitions

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@@ -1,239 +1,149 @@
import os
import subprocess
from typing import Optional
from .install.colors_definer import ColorsDefiner
from .theme import Theme
from .utils import remove_properties, remove_keywords, gnome
from .utils import remove_properties, remove_keywords
from . import config
from .utils.alternatives_updater import AlternativesUpdater
from .utils.console import Console, Color, Format
from .utils.files_labeler import FilesLabeler
class ThemePrepare:
"""
Theme object prepared for installation
"""
def __init__(self, theme: Theme, theme_file, should_label=False):
self.theme = theme
self.theme_file = theme_file
self.should_label = should_label
from .utils.gresource import Gresource, GresourceBackupNotFoundError
class GlobalTheme:
def __init__(self, colors_json, theme_folder, destination_folder, destination_file, temp_folder,
mode=None, is_filled=False):
"""Class to install global theme for GDM"""
def __init__(self,
colors_json: ColorsDefiner, theme_folder: str,
destination_folder: str, destination_file: str, temp_folder: str,
mode: Optional[str] = None, is_filled = False
):
"""
Initialize GlobalTheme class
:param colors_json: location of a json file with colors
:param colors_json: location of a JSON file with color values
:param theme_folder: raw theme location
:param destination_folder: folder where themes will be installed
:param temp_folder: folder where files will be collected
:param mode: theme mode (light or dark). applied only for gnome-shell < 44
:param is_filled: if True, theme will be filled
:param mode: theme mode (light or dark)
:param is_filled: if True, the theme will be filled
"""
self.colors_json = colors_json
self.theme_folder = theme_folder
self.destination_folder = destination_folder
self.destination_file = destination_file
self.temp_folder = temp_folder
self.backup_file = f"{self.destination_file}.backup"
self.backup_trigger = "\n/* Marble theme */\n" # trigger to check if theme is installed
self.extracted_theme: str = os.path.join(self.temp_folder, config.extracted_gdm_folder)
self.gst = os.path.join(self.destination_folder, self.destination_file) # use backup file if theme is installed
self.themes: list[ThemePrepare] = []
self.is_filled = is_filled
self.mode = mode
self.themes: list[ThemePrepare] = []
def __create_theme(self, theme_type: str, mode=None, should_label=False, is_filled=False):
self.__is_installed_trigger = "\n/* Marble theme */\n"
self.__gresource_file = os.path.join(self.destination_folder, self.destination_file)
self.__gresource_temp_folder = os.path.join(self.temp_folder, config.extracted_gdm_folder)
self.__gresource = Gresource(self.destination_file, self.__gresource_temp_folder, self.destination_folder)
def prepare(self):
if self.__is_installed():
Console.Line().info("Theme is installed. Reinstalling...")
self.__gresource.use_backup_gresource()
self.__gresource.extract()
self.__find_themes()
def __is_installed(self) -> bool:
if not hasattr(self, '__is_installed_cached'):
with open(self.__gresource_file, "rb") as f:
self.__is_installed_cached = self.__is_installed_trigger.encode() in f.read()
return self.__is_installed_cached
def __find_themes(self):
extracted_theme_files = os.listdir(self.__gresource_temp_folder)
allowed_modes = ("dark", "light")
allowed_css = ("gnome-shell-dark", "gnome-shell-light", "gnome-shell")
for style_name in allowed_css:
style_file = style_name + ".css"
if style_file in extracted_theme_files:
last_mode = style_name.split("-")[-1]
mode = last_mode if last_mode in allowed_modes else None
self.__append_theme(style_name, mode=mode or self.mode, label=mode)
def __append_theme(self, theme_type: str, mode = None, label: Optional[str] = None):
"""Helper to create theme objects"""
theme = Theme(theme_type, self.colors_json, self.theme_folder,
self.extracted_theme, self.temp_folder,
mode=mode, is_filled=is_filled)
self.__gresource_temp_folder, self.temp_folder,
mode=mode, is_filled=self.is_filled)
theme.prepare()
theme_file = os.path.join(self.extracted_theme, f"{theme_type}.css")
return ThemePrepare(theme=theme, theme_file=theme_file, should_label=should_label)
theme_file = os.path.join(self.__gresource_temp_folder, f"{theme_type}.css")
self.themes.append(ThemePrepare(theme=theme, theme_file=theme_file, label=label))
def __is_installed(self):
"""
Check if theme is installed
:return: True if theme is installed, False otherwise
"""
def install(self, hue, sat=None):
"""Install theme globally"""
if os.geteuid() != 0:
raise Exception("Root privileges required to install GDM theme")
with open(self.gst, "rb") as f:
return self.backup_trigger.encode() in f.read()
self.__generate_themes(hue, 'Marble', sat)
def __extract(self):
"""
Extract gresource files to temp folder
"""
extract_line = Console.Line()
extract_line.update("Extracting gresource files...")
self.__gresource.compile()
if not self.__is_installed():
self.__gresource.backup()
self.__gresource.move()
resources = subprocess.getoutput(f"gresource list {self.gst}").split("\n")
prefix = "/org/gnome/shell/"
try:
for resource in resources:
resource_path = resource.replace(prefix, "")
dir_path = os.path.join(self.temp_folder, os.path.dirname(resource_path))
output_path = os.path.join(self.temp_folder, resource_path)
os.makedirs(dir_path, exist_ok=True)
with open(output_path, 'wb') as f:
subprocess.run(["gresource", "extract", self.gst, resource], stdout=f, check=True)
extract_line.success("Extracted gresource files.")
except FileNotFoundError as e:
if "gresource" in str(e):
print("Error: 'gresource' command not found.")
print("Please install the glib2-devel package:")
print(" - For Fedora/RHEL: sudo dnf install glib2-devel")
print(" - For Ubuntu/Debian: sudo apt install libglib2.0-dev")
print(" - For Arch: sudo pacman -S glib2-devel")
raise Exception("Missing required dependency: glib2-devel") from e
raise
def __add_gnome_styles(self, theme):
"""
Add gnome styles to the start of the file
:param theme: Theme object
"""
with open(f"{self.extracted_theme}/{theme.theme_type}.css", 'r') as gnome_theme:
gnome_styles = gnome_theme.read() + self.backup_trigger
theme.add_to_start(gnome_styles)
def __generate_themes(self, hue, color, sat=None):
"""
Generate theme files for gnome-shell-theme.gresource.xml
:param hue: color hue
:param color: color name
:param sat: color saturation
"""
self.__update_alternatives()
def __generate_themes(self, hue: int, color: str, sat: Optional[int] = None):
"""Generate theme files for gnome-shell-theme.gresource.xml"""
for theme_prepare in self.themes:
if theme_prepare.should_label:
if theme_prepare.label is not None:
temp_folder = theme_prepare.theme.temp_folder
main_styles = theme_prepare.theme.main_styles
FilesLabeler(temp_folder, main_styles).append_label("light")
FilesLabeler(temp_folder, main_styles).append_label(theme_prepare.label)
remove_keywords(theme_prepare.theme_file, "!important")
remove_properties(theme_prepare.theme_file, "background-color", "color", "box-shadow", "border-radius")
self.__add_gnome_styles(theme_prepare.theme)
theme_prepare.theme.install(hue, color, sat, destination=self.extracted_theme)
theme_prepare.theme.install(hue, color, sat, destination=self.__gresource_temp_folder)
def __add_gnome_styles(self, theme: Theme):
"""Add gnome styles to the start of the file"""
with open(f"{theme.destination_folder}/{theme.theme_type}.css", 'r') as gnome_theme:
gnome_styles = gnome_theme.read() + self.__is_installed_trigger
theme.add_to_start(gnome_styles)
def __backup(self):
if self.__is_installed():
return
backup_line = Console.Line()
backup_line.update("Backing up default theme...")
subprocess.run(["cp", "-aT", self.gst, f"{self.gst}.backup"], cwd=self.destination_folder, check=True)
backup_line.success("Backed up default theme.")
def __generate_gresource_xml(self):
# list of files to add to gnome-shell-theme.gresource.xml
files = [f"<file>{file}</file>" for file in os.listdir(self.extracted_theme)]
nl = "\n" # fstring doesn't support newline character
return f"""<?xml version="1.0" encoding="UTF-8"?>
<gresources>
<gresource prefix="/org/gnome/shell/theme">
{nl.join(files)}
</gresource>
</gresources>"""
def prepare(self):
try:
gnome_version = gnome.gnome_version()
gnome_major = gnome_version.split(".")[0]
if int(gnome_major) >= 44:
self.themes += [
self.__create_theme("gnome-shell-light", mode='light', should_label=True, is_filled=self.is_filled),
self.__create_theme("gnome-shell-dark", mode='dark', is_filled=self.is_filled)
]
except Exception as e:
print(f"Error: {e}")
print("Using single theme.")
if not self.themes:
self.themes.append(
self.__create_theme(
"gnome-shell", mode=self.mode if self.mode else 'dark', is_filled=self.is_filled))
def install(self, hue, sat=None):
"""
Install theme globally
:param hue: color hue
:param sat: color saturation
"""
if os.geteuid() != 0:
raise Exception("Root privileges required to install GDM theme")
if self.__is_installed():
print("Theme is installed. Reinstalling...")
self.gst += ".backup"
self.__extract()
# generate theme files for global theme
self.__generate_themes(hue, 'Marble', sat)
# generate gnome-shell-theme.gresource.xml
with open(f"{self.extracted_theme}/{self.destination_file}.xml", 'w') as gresource_xml:
generated_xml = self.__generate_gresource_xml()
gresource_xml.write(generated_xml)
# compile gnome-shell-theme.gresource.xml
compile_line = Console.Line()
compile_line.update("Compiling gnome-shell theme...")
subprocess.run(["glib-compile-resources" , f"{self.destination_file}.xml"],
cwd=self.extracted_theme, check=True)
compile_line.success("Theme compiled.")
# backup installed theme
self.__backup()
# install theme
install_line = Console.Line()
install_line.update("Moving compiled theme to system folder...")
subprocess.run(["sudo", "cp", "-f",
f"{self.extracted_theme}/{self.destination_file}",
f"{self.destination_folder}/{self.destination_file}"],
check=True)
install_line.success("Theme moved to system folder.")
def __update_alternatives(self):
link = os.path.join(self.destination_folder, config.ubuntu_gresource_link)
name = config.ubuntu_gresource_link
path = os.path.join(self.destination_folder, self.destination_file)
AlternativesUpdater.install_and_set(link, name, path)
def remove(self):
"""
Remove installed theme
"""
# use backup file if theme is installed
if self.__is_installed():
removing_line = Console.Line()
removing_line.update("Theme is installed. Removing...")
backup_path = os.path.join(self.destination_folder, self.backup_file)
dest_path = os.path.join(self.destination_folder, self.destination_file)
if os.path.isfile(backup_path):
subprocess.run(["sudo", "mv", backup_path, dest_path], check=True)
try:
self.__gresource.restore()
removing_line.success("Global theme removed successfully. Restart GDM to apply changes.")
else:
except GresourceBackupNotFoundError:
formatted_shell = Console.format("gnome-shell", color=Color.BLUE, format_type=Format.BOLD)
removing_line.error(f"Backup file not found. Try reinstalling {formatted_shell} package.")
else:
Console.Line().error("Theme is not installed. Nothing to remove.")
Console.Line().update("If theme is still installed globally, try reinstalling gnome-shell package.", icon="⚠️")
Console.Line().warn("If theme is still installed globally, try reinstalling gnome-shell package.")
def __remove_alternatives(self):
name = config.ubuntu_gresource_link
path = os.path.join(self.destination_folder, self.destination_file)
AlternativesUpdater.remove(name, path)
class ThemePrepare:
"""Theme data class prepared for installation"""
def __init__(self, theme: Theme, theme_file, label: Optional[str] = None):
self.theme = theme
self.theme_file = theme_file
self.label = label

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@@ -14,7 +14,6 @@ class ThemeInstaller(ABC):
def __init__(self, args: argparse.Namespace, colors: ColorsDefiner):
self.args = args
self.colors = colors
self.stop_after_first_installed_color = False
self._define_theme()
@abstractmethod
@@ -84,9 +83,6 @@ class ThemeInstaller(ABC):
sat = values.get('s', args.sat)
colors_to_install.append((hue, color, sat))
if self.stop_after_first_installed_color:
break
if not colors_to_install:
return False
self._run_concurrent_installation(colors_to_install)
@@ -96,4 +92,6 @@ class ThemeInstaller(ABC):
with concurrent.futures.ThreadPoolExecutor() as executor:
futures = [executor.submit(self._install_theme, hue, color, sat)
for hue, color, sat in colors_to_install]
concurrent.futures.wait(futures)
for future in concurrent.futures.as_completed(futures):
future.result()

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@@ -0,0 +1,86 @@
import functools
import subprocess
from typing import TypeAlias
from scripts.utils.console import Console
PathString: TypeAlias = str | bytes
class AlternativesUpdater:
"""
Manages update-alternatives for Ubuntu.
Ignores errors if update-alternatives not found.
"""
@staticmethod
def ubuntu_specific(func):
@functools.wraps(func)
def wrapper(*args, **kwargs):
try:
result = func(*args, **kwargs)
return result
except FileNotFoundError as e:
if not "update-alternatives" in str(e):
raise
return None
return wrapper
@staticmethod
@ubuntu_specific
def install_and_set(link: str, name: str, path: PathString, priority: int = 0):
AlternativesUpdater.install(link, name, path, priority)
AlternativesUpdater.set(name, path)
@staticmethod
@ubuntu_specific
def install(link: str, name: str, path: PathString, priority: int = 0):
"""
Add an alternative to the system
:param link: Absolute path with file name where the link will be created
:param name: Name of the alternative
:param path: An absolute path to the file that will be linked
:param priority: Priority of the alternative; Higher number means higher priority
Example:
install(/usr/share/gnome-shell/gdm-theme.gresource,
gdm-theme.gresource, /usr/share/gnome-shell/gnome-shell-theme.gresource)
"""
subprocess.run([
"update-alternatives", "--quiet", "--install",
link, name, str(path), str(priority)
], check=True)
Console.Line().success(f"Installed {name} alternative.")
@staticmethod
@ubuntu_specific
def set(name: str, path: PathString):
"""
Set path as alternative to name in system
:param name: Name of the alternative
:param path: An absolute path to the file that will be linked
Example:
set(gdm-theme.gresource, /usr/share/gnome-shell/gnome-shell-theme.gresource)
"""
subprocess.run([
"update-alternatives", "--quiet", "--set",
name, str(path)
], check=True)
@staticmethod
@ubuntu_specific
def remove(name: str, path: PathString):
"""
Remove alternative from system
:param name: Name of the alternative
:param path: An absolute path to the file that will be linked
Example:
remove(gdm-theme.gresource, /usr/share/gnome-shell/gnome-shell-theme.gresource)
"""
subprocess.run([
"update-alternatives", "--quiet", "--remove",
name, str(path)
], check=True)
Console.Line().success(f"Removed {name} alternative.")

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@@ -43,6 +43,9 @@ class Console:
def warn(self, message):
self.update(message, "⚠️")
def info(self, message):
self.update(message, " ")
def _reserve_line(self):
"""Reserve a line for future updates"""
with Console._print_lock:

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@@ -1,7 +1,7 @@
import os
from typing import Tuple
from typing import Tuple, TypeAlias
type LabeledFileGroup = Tuple[str, str]
LabeledFileGroup: TypeAlias = Tuple[str, str]
class FilesLabeler:
def __init__(self, directory: str, *args: str):

164
scripts/utils/gresource.py Normal file
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@@ -0,0 +1,164 @@
import os
import subprocess
import textwrap
from pathlib import Path
from scripts.utils.console import Console
class GresourceBackupNotFoundError(FileNotFoundError):
def __init__(self, location: str = None):
if location:
super().__init__(f"Gresource backup file not found: {location}")
else:
super().__init__("Gresource backup file not found.")
class Gresource:
"""Handles the extraction and compilation of gresource files for GNOME Shell themes."""
def __init__(self, gresource_file: str, temp_folder: str, destination: str):
"""
:param gresource_file: The name of the gresource file to be processed.
:param temp_folder: The temporary folder where resources will be extracted.
:param destination: The destination folder where the compiled gresource file will be saved.
"""
self.gresource_file = gresource_file
self.temp_folder = temp_folder
self.destination = destination
self.__temp_gresource = os.path.join(temp_folder, gresource_file)
self.__destination_gresource = os.path.join(destination, gresource_file)
self.__active_source_gresource = self.__destination_gresource
self.__backup_gresource = os.path.join(destination, f"{gresource_file}.backup")
self.__gresource_xml = os.path.join(temp_folder, f"{gresource_file}.xml")
def use_backup_gresource(self):
if not os.path.exists(self.__backup_gresource):
raise GresourceBackupNotFoundError(self.__backup_gresource)
self.__active_source_gresource = self.__backup_gresource
def extract(self):
extract_line = Console.Line()
extract_line.update("Extracting gresource files...")
resources = self.__get_resources_list()
self.__extract_resources(resources)
extract_line.success("Extracted gresource files.")
def __get_resources_list(self):
resources_list_response = subprocess.run(
["gresource", "list", self.__active_source_gresource],
capture_output=True, text=True, check=False
)
if resources_list_response.stderr:
raise Exception(f"gresource could not process the theme file: {self.__active_source_gresource}")
return resources_list_response.stdout.strip().split("\n")
def __extract_resources(self, resources: list[str]):
prefix = "/org/gnome/shell/theme/"
try:
for resource in resources:
resource_path = resource.replace(prefix, "")
output_path = os.path.join(self.temp_folder, resource_path)
os.makedirs(os.path.dirname(output_path), exist_ok=True)
with open(output_path, 'wb') as f:
subprocess.run(
["gresource", "extract", self.__active_source_gresource, resource],
stdout=f, check=True
)
except FileNotFoundError as e:
if "gresource" in str(e):
self.__raise_gresource_error(e)
raise
@staticmethod
def __raise_gresource_error(e: Exception):
print("Error: 'gresource' command not found.")
print("Please install the glib2-devel package:")
print(" - For Fedora/RHEL: sudo dnf install glib2-devel")
print(" - For Ubuntu/Debian: sudo apt install libglib2.0-dev")
print(" - For Arch: sudo pacman -S glib2-devel")
raise Exception("Missing required dependency: glib2-devel") from e
def compile(self):
compile_line = Console.Line()
compile_line.update("Compiling gnome-shell theme...")
self.__create_gresource_xml()
self.__compile_resources()
compile_line.success("Theme compiled.")
def __create_gresource_xml(self):
with open(self.__gresource_xml, 'w') as gresource_xml:
gresource_xml.write(self.__generate_gresource_xml())
def __generate_gresource_xml(self):
files_to_include = self.__get_files_to_include()
nl = "\n" # fstring doesn't support newline character
return textwrap.dedent(f"""
<?xml version="1.0" encoding="UTF-8"?>
<gresources>
<gresource prefix="/org/gnome/shell/theme">
{nl.join(files_to_include)}
</gresource>
</gresources>
""")
def __get_files_to_include(self):
temp_path = Path(self.temp_folder)
return [
f"<file>{file.relative_to(temp_path)}</file>"
for file in temp_path.glob('**/*')
if file.is_file()
]
def __compile_resources(self):
try:
subprocess.run(["glib-compile-resources",
"--sourcedir", self.temp_folder,
"--target", self.__temp_gresource,
self.__gresource_xml
],
cwd=self.temp_folder, check=True)
except FileNotFoundError as e:
if "glib-compile-resources" in str(e):
self.__raise_gresource_error(e)
raise
def backup(self):
backup_line = Console.Line()
backup_line.update("Backing up gresource files...")
subprocess.run(["cp", "-aT",
self.__destination_gresource,
self.__backup_gresource],
check=True)
backup_line.success("Backed up gresource files.")
def restore(self):
if not os.path.exists(self.__backup_gresource):
raise GresourceBackupNotFoundError(self.__backup_gresource)
subprocess.run(["sudo", "mv", "-f",
self.__backup_gresource,
self.__destination_gresource],
check=True)
def move(self):
move_line = Console.Line()
move_line.update("Moving gresource files...")
subprocess.run(["sudo", "cp", "-f",
self.__temp_gresource,
self.__destination_gresource],
check=True)
move_line.success("Moved gresource files.")