mirror of
https://github.com/Snigdha-OS/snigdhaos-kernel-switcher.git
synced 2025-09-07 23:54:57 +02:00
114 lines
4.4 KiB
Python
114 lines
4.4 KiB
Python
#!/usr/bin/env python3
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import os
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import gi
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import libs.functions as fn
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from ui.ManagerGUI import ManagerGUI
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gi.require_version("Gtk", "4.0")
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from gi.repository import Gtk, Gio, GLib, Gdk
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base_dir = fn.os.path.dirname(fn.os.path.realpath(__file__))
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app_name = "Snigdha OS Kernel Manager"
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app_version = "${app_version}"
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app_name_dir = "snigdhaos-kernel-manager"
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app_id = "org.snigdhaos.kernelmanager"
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lock_file = "/tmp/skm.lock"
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pid_file = "/tmp/skm.pid"
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class Main(Gtk.Application):
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def __init__(self):
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super().__init__(application_id=app_id, flags=Gio.ApplicationFlags.FLAGS_NONE)
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def do_activate(self):
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# retrieves the default GLib MainContext, which represents the main event loop
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# GLib is a low-level core library that forms the basis of GTK and GNOME.
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default_context = GLib.MainContext.default()
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# tries to access the active_window property of the object (self) invoking this method
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win = self.props.active_window
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# checks if win is None (which would mean there's no active window)
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# if there's no active window, it creates a new instance of ManagerGUI
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if not win:
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win = ManagerGUI(
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application=self,
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app_name=app_name,
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default_context=default_context,
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app_version=app_version,
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)
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# retrieves the display associated with the window win. Gtk.Widget.get_display()
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# returns the display that win is on.
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display = Gtk.Widget.get_display(win)
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# sets the icon for the window win to "snigdhaos-kernel-manager-tux"
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win.set_icon_name("snigdhaos-kernel-manager-tux")
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# creates a new instance of Gtk.CssProvider
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# which is used to load CSS stylesheets to style GTK widgets.
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provider = Gtk.CssProvider.new()
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# creates a new Gio.File object representing the CSS file at the path base_dir + "/snigdhaos-kernel-manager.css"
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css_file = Gio.file_new_for_path(base_dir + "/snigdhaos-kernel-manager.css")
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# loads the CSS styles from the file specified by css_file into the provider
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provider.load_from_file(css_file)
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# adds the CSS provider (provider) to the display (display) with a priority of Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION
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# styles provided by this CSS provider will take precedence over other styles for the application
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Gtk.StyleContext.add_provider_for_display(
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display,
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provider,
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Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION,
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)
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# makes the window win visible to the user
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# typically called after setting up the window and its contents to ensure it appears on the screen
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win.present()
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def do_startup(self):
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Gtk.Application.do_startup(self)
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def do_shutdown(self):
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Gtk.Application.do_shutdown(self)
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if os.path.exists(lock_file):
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os.remove(lock_file)
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if os.path.exists(pid_file):
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os.remove(pid_file)
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def signal_handler(sig, frame):
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Gtk.main_quit(0)
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if __name__ == "__main__":
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try:
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# signal.signal(signal.SIGINT, signal_handler)
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if not fn.os.path.isfile(lock_file):
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with open(pid_file, "w") as f:
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f.write(str(fn.os.getpid()))
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# splash = SplashScreen()
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app = Main()
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app.run(None)
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else:
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md = Gtk.MessageDialog(
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parent=Main(),
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flags=0,
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message_type=Gtk.MessageType.INFO,
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buttons=Gtk.ButtonsType.YES_NO,
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text="%s Lock File Found" % app_name,
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)
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md.format_secondary_markup(
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"A %s lock file has been found. This indicates there is already an instance of <b>%s</b> running.\n\
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Click 'Yes' to remove the lock file and try running again"
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% (lock_file, app_name)
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) # noqa
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result = md.run()
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md.destroy()
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if result in (Gtk.ResponseType.OK, Gtk.ResponseType.YES):
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pid = ""
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if fn.os.path.exists(pid_file):
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with open(pid_file, "r") as f:
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line = f.read()
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pid = line.rstrip().lstrip()
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else:
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fn.os.unlink(lock_file)
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fn.sys.exit(1)
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else:
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fn.sys.exit(1)
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except Exception as e:
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print("Exception in __main__: %s" % e) |