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# Copyright (c) 2011 John Stowers
# SPDX-License-Identifier: GPL-3.0+
# License-Filename: LICENSES/GPL-3.0
import os
import os.path
import logging
import zipfile
import tempfile
import json
import pprint
import configparser
from gi.repository import Gtk
from gi.repository import GLib
import gtweak
from gtweak.utils import walk_directories, make_combo_list_with_default, extract_zip_file, get_resource_dirs
from gtweak.tweakmodel import Tweak
from gtweak.gshellwrapper import GnomeShellFactory
from gtweak.gsettings import GSettingsSetting
from gtweak.gtksettings import GtkSettingsManager
from gtweak.widgets import ListBoxTweakGroup, GSettingsSwitchTweak, GSettingsComboTweak, GSettingsComboEnumTweak, Title, build_combo_box_text,build_label_beside_widget, FileChooserButton, GSettingsFileChooserButtonTweak
_shell = GnomeShellFactory().get_shell()
_shell_loaded = _shell is not None
def get_theme_name(index_path):
"""Given an index file path, gets the relevant sound theme's name."""
config = configparser.ConfigParser()
config.read(index_path)
return config["Sound Theme"]["Name"]
def get_sound_themes():
"""Gets the available sound themes as a (theme_directory_name, theme_display_name) tuple list."""
themes = []
seen = set()
for location in get_resource_dirs("sounds"):
for item in os.listdir(location):
candidate = os.path.join(location, item)
index_file = os.path.join(candidate, "index.theme")
if os.path.isdir(candidate) and os.path.exists(index_file):
theme_info = (os.path.basename(candidate), get_theme_name(index_file))
if theme_info[1] not in seen:
themes.append(theme_info)
seen.add(theme_info[1])
return themes
class GtkThemeSwitcher(GSettingsComboTweak):
def __init__(self, **options):
GSettingsComboTweak.__init__(self,
_("Legacy Applications"),
"org.gnome.desktop.interface",
"gtk-theme",
make_combo_list_with_default(self._get_valid_themes(), "Adwaita"),
**options)
self._gtksettings3 = GtkSettingsManager('3.0')
self._gtksettings4 = GtkSettingsManager('4.0')
def _get_valid_themes(self):
""" Only shows themes that have variations for gtk3"""
gtk_ver = Gtk.MINOR_VERSION
if gtk_ver % 2: # Want even number
gtk_ver += 1
valid = ['Adwaita', 'HighContrast', 'HighContrastInverse']
valid += walk_directories(get_resource_dirs("themes"), lambda d:
os.path.exists(os.path.join(d, "gtk-3.0", "gtk.css")) or \
os.path.exists(os.path.join(d, "gtk-3.{}".format(gtk_ver))))
return set(valid)
def _on_combo_changed(self, combo):
_iter = combo.get_active_iter()
if _iter:
value = combo.get_model().get_value(_iter, 0)
self.settings.set_string(self.key_name, value)
# Turn off Global Dark Theme when theme is changed.
# https://bugzilla.gnome.org/783666
try:
self._gtksettings3.set_integer("gtk-application-prefer-dark-theme",
0)
self._gtksettings4.set_integer("gtk-application-prefer-dark-theme",
0)
except:
self.notify_information(_("Error writing setting"))
class IconThemeSwitcher(GSettingsComboTweak):
def __init__(self, **options):
GSettingsComboTweak.__init__(self,
_("Icons"),
"org.gnome.desktop.interface",
"icon-theme",
make_combo_list_with_default(self._get_valid_icon_themes(), "Adwaita"),
**options)
def _get_valid_icon_themes(self):
valid = walk_directories(get_resource_dirs("icons"), lambda d:
os.path.isdir(d) and \
os.path.exists(os.path.join(d, "index.theme")))
return set(valid)
class CursorThemeSwitcher(GSettingsComboTweak):
def __init__(self, **options):
GSettingsComboTweak.__init__(self,
_("Cursor"),
"org.gnome.desktop.interface",
"cursor-theme",
make_combo_list_with_default(self._get_valid_cursor_themes(), "Adwaita"),
**options)
def _get_valid_cursor_themes(self):
valid = walk_directories(get_resource_dirs("icons"), lambda d:
os.path.isdir(d) and \
os.path.exists(os.path.join(d, "cursors")))
return set(valid)
class ShellThemeTweak(Gtk.Box, Tweak):
THEME_EXT_NAME = "user-theme@gnome-shell-extensions.gcampax.github.com"
THEME_GSETTINGS_SCHEMA = "org.gnome.shell.extensions.user-theme"
THEME_GSETTINGS_NAME = "name"
THEME_GSETTINGS_DIR = os.path.join(GLib.get_user_data_dir(), "gnome-shell", "extensions",
THEME_EXT_NAME, "schemas")
LEGACY_THEME_DIR = os.path.join(GLib.get_home_dir(), ".themes")
THEME_DIR = os.path.join(GLib.get_user_data_dir(), "themes")
def __init__(self, **options):
Gtk.Box.__init__(self, orientation=Gtk.Orientation.HORIZONTAL)
Tweak.__init__(self, _("Shell"), _("Install custom or user themes for gnome-shell"), **options)
#check the shell is running and the usertheme extension is present
error = _("Unknown error")
self._shell = _shell
if self._shell is None:
logging.warning("Shell not running", exc_info=True)
error = _("Shell not running")
else:
try:
extensions = self._shell.list_extensions()
if ShellThemeTweak.THEME_EXT_NAME in extensions and extensions[ShellThemeTweak.THEME_EXT_NAME]["state"] == 1:
#check the correct gsettings key is present
try:
if os.path.exists(ShellThemeTweak.THEME_GSETTINGS_DIR):
self._settings = GSettingsSetting(ShellThemeTweak.THEME_GSETTINGS_SCHEMA,
schema_dir=ShellThemeTweak.THEME_GSETTINGS_DIR)
else:
self._settings = GSettingsSetting(ShellThemeTweak.THEME_GSETTINGS_SCHEMA)
name = self._settings.get_string(ShellThemeTweak.THEME_GSETTINGS_NAME)
ext = extensions[ShellThemeTweak.THEME_EXT_NAME]
logging.debug("Shell user-theme extension\n%s" % pprint.pformat(ext))
error = None
except:
logging.warning(
"Could not find user-theme extension in %s" % ','.join(list(extensions.keys())),
exc_info=True)
error = _("Shell user-theme extension incorrectly installed")
else:
error = _("Shell user-theme extension not enabled")
except Exception as e:
logging.warning("Could not list shell extensions", exc_info=True)
error = _("Could not list shell extensions")
if error:
cb = build_combo_box_text(None)
build_label_beside_widget(self.name, cb,
warning=error,
hbox=self)
self.widget_for_size_group = cb
else:
#include both system, and user themes
#note: the default theme lives in /system/data/dir/gnome-shell/theme
# and not themes/, so add it manually later
dirs = [os.path.join(d, "themes") for d in GLib.get_system_data_dirs()]
dirs += [ShellThemeTweak.THEME_DIR]
dirs += [ShellThemeTweak.LEGACY_THEME_DIR]
valid = walk_directories(dirs, lambda d:
os.path.exists(os.path.join(d, "gnome-shell")) and \
os.path.exists(os.path.join(d, "gnome-shell", "gnome-shell.css")))
#the default value to reset the shell is an empty string
valid.extend( ("",) )
valid = set(valid)
#build a combo box with all the valid theme options
#manually add Adwaita to represent the default
cb = build_combo_box_text(
self._settings.get_string(ShellThemeTweak.THEME_GSETTINGS_NAME),
*make_combo_list_with_default(
valid,
"",
default_text=_("<i>Default</i>")))
cb.connect('changed', self._on_combo_changed)
self._combo = cb
#a filechooser to install new themes
chooser = FileChooserButton(
_("Select a theme"),
True,
["application/zip"])
chooser.connect("file-set", self._on_file_set)
build_label_beside_widget(self.name, chooser, cb, hbox=self)
self.widget_for_size_group = cb
def _on_file_set(self, chooser):
f = chooser.get_filename()
with zipfile.ZipFile(f, 'r') as z:
try:
fragment = ()
theme_name = None
for n in z.namelist():
if n.endswith("gnome-shell.css"):
fragment = n.split("/")[0:-1]
if n.endswith("gnome-shell/theme.json"):
logging.info("New style theme detected (theme.json)")
#new style theme - extract the name from the json file
tmp = tempfile.mkdtemp()
z.extract(n, tmp)
with open(os.path.join(tmp,n)) as f:
try:
theme_name = json.load(f)["shell-theme"]["name"]
except:
logging.warning("Invalid theme format", exc_info=True)
if not fragment:
raise Exception("Could not find gnome-shell.css")
if not theme_name:
logging.info("Old style theme detected (missing theme.json)")
#old style themes name was taken from the zip name
if fragment[0] == "theme" and len(fragment) == 1:
theme_name = os.path.basename(f)
else:
theme_name = fragment[0]
theme_members_path = "/".join(fragment)
ok, updated = extract_zip_file(
z,
theme_members_path,
os.path.join(ShellThemeTweak.THEME_DIR, theme_name, "gnome-shell"))
if ok:
if updated:
self.notify_information(_("%s theme updated successfully") % theme_name)
else:
self.notify_information(_("%s theme installed successfully") % theme_name)
#I suppose I could rely on updated as indicating whether to add the theme
#name to the combo, but just check to see if it is already there
model = self._combo.get_model()
if theme_name not in [r[0] for r in model]:
model.append( (theme_name, theme_name) )
else:
self.notify_information(_("Error installing theme"))
except:
#does not look like a valid theme
self.notify_information(_("Invalid theme"))
logging.warning("Error parsing theme zip", exc_info=True)
#set button back to default state
chooser.unselect_all()
def _on_combo_changed(self, combo):
val = combo.get_model().get_value(combo.get_active_iter(), 0)
self._settings.set_string(ShellThemeTweak.THEME_GSETTINGS_NAME, val)
TWEAK_GROUPS = [
ListBoxTweakGroup(_("Appearance"),
#GSettingsSwitchTweak("Buttons Icons","org.gnome.desktop.interface", "buttons-have-icons"),
#GSettingsSwitchTweak("Menu Icons","org.gnome.desktop.interface", "menus-have-icons"),
Title(_("Themes"), "", uid="title-theme"),
CursorThemeSwitcher(),
IconThemeSwitcher(),
ShellThemeTweak(loaded=_shell_loaded),
GSettingsComboTweak(_("Sound"), "org.gnome.desktop.sound", "theme-name", get_sound_themes(),
desc=_("Specifies which sound theme to use for sound events.")),
GtkThemeSwitcher(),
Title(_("Background"), "", uid="title-theme"),
GSettingsFileChooserButtonTweak(_("Image"),"org.gnome.desktop.background", "picture-uri",
local_only=True, mimetypes=["application/xml","image/png","image/jpeg"]),
GSettingsComboEnumTweak(_("Adjustment"),"org.gnome.desktop.background", "picture-options"),
# Title(_("Files"), ""),
# GSettingsSwitchTweak(_("Use location entry"), "org.gnome.nautilus.preferences",
# "always-use-location-entry",schema_filename="org.gnome.nautilus.gschema.xml"),
),
]
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