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Gradience/gradience/backend/theming/preset_utils.py
tfuxu 527a9dc90f
backend: seperate JSON encoding in Preset module to a new function 
* add more checks in new_preset_from_monet function
* return full Preset object instead of dict data
* remove some unused code
2022-12-10 15:21:13 +01:00

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# preset_utils.py
#
# Change the look of Adwaita, with ease
# Copyright (C) 2022 Gradience Team
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
import os
import json
from gi.repository import GLib, Gio
from gradience.backend.theming.monet import Monet
from gradience.backend.models.preset import Preset
from gradience.backend.utils.colors import rgba_from_argb
from gradience.backend.globals import get_gtk_theme_dir
from gradience.backend.logger import Logger
logging = Logger()
class PresetUtils:
def __init__(self):
self.preset = Preset()
def generate_gtk_css(self, app_type: str, preset: Preset) -> str:
variables = preset.variables
palette = preset.palette
custom_css = preset.custom_css
final_css = ""
for key in variables.keys():
final_css += f"@define-color {key} {variables[key]};\n"
for prefix_key in palette.keys():
for key in palette[prefix_key].keys():
final_css += f"@define-color {prefix_key + key} {palette[prefix_key][key]};\n"
final_css += custom_css.get(app_type, "")
return final_css
def new_preset_from_monet(self, name=None, monet_palette=None, props=None, obj_only=False) -> Preset or None:
if props:
tone = props[0]
theme = props[1]
else:
raise Exception("Properties 'tone' and/or 'theme' missing")
if not monet_palette:
raise Exception("Property 'monet_palette' missing")
if theme == "dark":
dark_theme = monet_palette["schemes"]["dark"]
variable = {
"accent_color": rgba_from_argb(dark_theme.primary),
"accent_bg_color": rgba_from_argb(dark_theme.primaryContainer),
"accent_fg_color": rgba_from_argb(dark_theme.onPrimaryContainer),
"destructive_color": rgba_from_argb(dark_theme.error),
"destructive_bg_color": rgba_from_argb(dark_theme.errorContainer),
"destructive_fg_color": rgba_from_argb(
dark_theme.onErrorContainer
),
"success_color": rgba_from_argb(dark_theme.tertiary),
"success_bg_color": rgba_from_argb(dark_theme.onTertiary),
"success_fg_color": rgba_from_argb(dark_theme.onTertiaryContainer),
"warning_color": rgba_from_argb(dark_theme.secondary),
"warning_bg_color": rgba_from_argb(dark_theme.onSecondary),
"warning_fg_color": rgba_from_argb(dark_theme.primary, "0.8"),
"error_color": rgba_from_argb(dark_theme.error),
"error_bg_color": rgba_from_argb(dark_theme.errorContainer),
"error_fg_color": rgba_from_argb(dark_theme.onError),
"window_bg_color": rgba_from_argb(dark_theme.surface),
"window_fg_color": rgba_from_argb(dark_theme.onSurface),
"view_bg_color": rgba_from_argb(dark_theme.surface),
"view_fg_color": rgba_from_argb(dark_theme.onSurface),
"headerbar_bg_color": rgba_from_argb(dark_theme.surface),
"headerbar_fg_color": rgba_from_argb(dark_theme.onSurface),
"headerbar_border_color": rgba_from_argb(
dark_theme.primary, "0.8"
),
"headerbar_backdrop_color": "@headerbar_bg_color",
"headerbar_shade_color": rgba_from_argb(dark_theme.shadow),
"card_bg_color": rgba_from_argb(dark_theme.primary, "0.05"),
"card_fg_color": rgba_from_argb(dark_theme.onSecondaryContainer),
"card_shade_color": rgba_from_argb(dark_theme.shadow),
"dialog_bg_color": rgba_from_argb(dark_theme.secondaryContainer),
"dialog_fg_color": rgba_from_argb(dark_theme.onSecondaryContainer),
"popover_bg_color": rgba_from_argb(dark_theme.secondaryContainer),
"popover_fg_color": rgba_from_argb(
dark_theme.onSecondaryContainer
),
"shade_color": rgba_from_argb(dark_theme.shadow),
"scrollbar_outline_color": rgba_from_argb(dark_theme.outline),
}
elif theme == "light":
light_theme = monet_palette["schemes"]["light"]
variable = {
"accent_color": rgba_from_argb(light_theme.primary),
"accent_bg_color": rgba_from_argb(light_theme.primary),
"accent_fg_color": rgba_from_argb(light_theme.onPrimary),
"destructive_color": rgba_from_argb(light_theme.error),
"destructive_bg_color": rgba_from_argb(light_theme.errorContainer),
"destructive_fg_color": rgba_from_argb(
light_theme.onErrorContainer
),
"success_color": rgba_from_argb(light_theme.tertiary),
"success_bg_color": rgba_from_argb(light_theme.tertiaryContainer),
"success_fg_color": rgba_from_argb(
light_theme.onTertiaryContainer
),
"warning_color": rgba_from_argb(light_theme.secondary),
"warning_bg_color": rgba_from_argb(light_theme.secondaryContainer),
"warning_fg_color": rgba_from_argb(
light_theme.onSecondaryContainer
),
"error_color": rgba_from_argb(light_theme.error),
"error_bg_color": rgba_from_argb(light_theme.errorContainer),
"error_fg_color": rgba_from_argb(light_theme.onError),
"window_bg_color": rgba_from_argb(light_theme.secondaryContainer),
"window_fg_color": rgba_from_argb(light_theme.onSurface),
"view_bg_color": rgba_from_argb(light_theme.secondaryContainer),
"view_fg_color": rgba_from_argb(light_theme.onSurface),
"headerbar_bg_color": rgba_from_argb(
light_theme.secondaryContainer
),
"headerbar_fg_color": rgba_from_argb(light_theme.onSurface),
"headerbar_border_color": rgba_from_argb(
light_theme.primary, "0.8"
),
"headerbar_backdrop_color": "@headerbar_bg_color",
"headerbar_shade_color": rgba_from_argb(
light_theme.secondaryContainer
),
"card_bg_color": rgba_from_argb(light_theme.primary, "0.05"),
"card_fg_color": rgba_from_argb(light_theme.onSecondaryContainer),
"card_shade_color": rgba_from_argb(light_theme.shadow),
"dialog_bg_color": rgba_from_argb(light_theme.secondaryContainer),
"dialog_fg_color": rgba_from_argb(
light_theme.onSecondaryContainer
),
"popover_bg_color": rgba_from_argb(light_theme.secondaryContainer),
"popover_fg_color": rgba_from_argb(
light_theme.onSecondaryContainer
),
"shade_color": rgba_from_argb(light_theme.shadow),
"scrollbar_outline_color": rgba_from_argb(light_theme.outline),
}
if obj_only == False and not name:
raise Exception("You either need to set 'obj_only' property to True, or add value to 'name' property")
if obj_only:
if name:
print("with name, obj_only")
self.preset.new(variables=variable, display_name=name)
else:
print("no name, obj_only")
self.preset.new(variables=variable)
return self.preset
if obj_only == False:
print("no obj_only, name")
self.preset.new(variables=variable, display_name=name)
try:
self.preset.save_to_file()
except Exception as e:
# TODO: Move exception handling to model/preset module
logging.error(f"Unexpected file error while trying to generate preset from Monet palette. Exc: {e}")
raise
def apply_preset(self, app_type: str, preset: Preset) -> None:
if app_type == "gtk4":
theme_dir = get_gtk_theme_dir(app_type)
if not os.path.exists(theme_dir):
os.makedirs(theme_dir)
gtk4_css = self.generate_gtk_css("gtk4", preset)
contents = ""
try:
with open(
os.path.join(theme_dir, "gtk.css"), "r", encoding="utf-8"
) as file:
contents = file.read()
except FileNotFoundError: # first run
pass
else:
with open(
os.path.join(theme_dir, "gtk.css.bak"), "w", encoding="utf-8"
) as file:
file.write(contents)
finally:
with open(
os.path.join(theme_dir, "gtk.css"), "w", encoding="utf-8"
) as file:
file.write(gtk4_css)
elif app_type == "gtk3":
theme_dir = get_gtk_theme_dir(app_type)
if not os.path.exists(theme_dir):
os.makedirs(theme_dir)
gtk3_css = self.generate_gtk_css("gtk3", preset)
contents = ""
try:
with open(
os.path.join(theme_dir, "gtk.css"), "r", encoding="utf-8"
) as file:
contents = file.read()
except FileNotFoundError: # first run
pass
else:
with open(
os.path.join(theme_dir, "gtk.css.bak"), "w", encoding="utf-8"
) as file:
file.write(contents)
finally:
with open(
os.path.join(theme_dir, "gtk.css"), "w", encoding="utf-8"
) as file:
file.write(gtk3_css)
def restore_gtk4_preset(self):
try:
with open(
os.path.join(
os.environ.get(
"XDG_CONFIG_HOME", os.environ["HOME"] +
"/.config"
),
"gtk-4.0/gtk.css.bak",
),
"r",
encoding="utf-8",
) as backup:
contents = backup.read()
backup.close()
with open(
os.path.join(
os.environ.get(
"XDG_CONFIG_HOME", os.environ["HOME"] +
"/.config"
),
"gtk-4.0/gtk.css",
),
"w",
encoding="utf-8",
) as gtk4css:
gtk4css.write(contents)
gtk4css.close()
except OSError as e:
logging.error(f"Unable to restore Gtk4 backup. Exc: {e}")
raise
def reset_preset(self, app_type: str) -> None:
if app_type == "gtk4":
file = Gio.File.new_for_path(
os.path.join(
os.environ.get(
"XDG_CONFIG_HOME", os.environ["HOME"] + "/.config"
),
"gtk-4.0/gtk.css",
)
)
try:
file.delete()
except GLib.GError as e:
logging.error(f"Unable to delete current preset. Exc: {e}")
raise
elif app_type == "gtk3":
file = Gio.File.new_for_path(
os.path.join(
os.environ.get(
"XDG_CONFIG_HOME", os.environ["HOME"] + "/.config"
),
"gtk-3.0/gtk.css",
)
)
try:
file.delete()
except GLib.GError as e:
logging.error(f"Unable to delete current preset. Exc: {e}")
raise
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