import sys import gi gi.require_version ( "Gtk", "4.0" ) gi.require_version( "Adw", "1" ) from gi.repository import Gtk, Adw, GLib class MainWindow (Adw.ApplicationWindow): def __init__ (self, *args, **kwargs): super ().__init__ ( *args, **kwargs ) GLib.set_prgname ( 'Adwaita Examples by Afacanc38' ) GLib.set_application_name ( 'Adwaita ViewSwitcher' ) self.set_name ( 'ViewSwitcherDemo' ) self.set_default_size (600, 300) self.box_main = Gtk.Box ( orientation = Gtk.Orientation.VERTICAL, halign = Gtk.Align.FILL, valign = Gtk.Align.FILL, hexpand = True, vexpand = True ) self.set_content ( self.box_main ) self.hb = Adw.HeaderBar () self.box_main.append (self.hb) self.stack = Adw.ViewStack () self.box_main.append ( self.stack ) # Squieezer self.sq_viewswitcher = Adw.Squeezer () self.sq_viewswitcher.set_switch_threshold_policy ( Adw.FoldThresholdPolicy.NATURAL ) self.sq_viewswitcher.set_transition_type ( Adw.SqueezerTransitionType.CROSSFADE ) self.sq_viewswitcher.set_xalign (1) self.sq_viewswitcher.set_homogeneous (True) self.hb.set_title_widget ( self.sq_viewswitcher ) # ViewSwitcher (wide) self.viewswitcher_wide = Adw.ViewSwitcher () self.viewswitcher_wide.set_policy( Adw.ViewSwitcherPolicy.WIDE ) self.viewswitcher_wide.set_stack ( self.stack ) self.sq_viewswitcher.add ( self.viewswitcher_wide ) # ViewSwitcher (narrow) self.viewswitcher_narrow = Adw.ViewSwitcher () self.viewswitcher_narrow.set_policy( Adw.ViewSwitcherPolicy.NARROW ) self.viewswitcher_narrow.set_stack ( self.stack ) self.sq_viewswitcher.add ( self.viewswitcher_narrow ) # ViewSwitcherBar (bottom viewswitcher) self.viewswitcherbar = Adw.ViewSwitcherBar ( vexpand = True, valign = Gtk.Align.END ) self.viewswitcherbar.set_stack ( self.stack ) self.viewswitcherbar.set_reveal (False) self.box_main.append ( self.viewswitcherbar ) # Window Title self.wintitle = Adw.WindowTitle ( title = 'Adwaita ViewSwitcher' ) self.sq_viewswitcher.add (self.wintitle) # Connect signals self.sq_viewswitcher.connect ( 'notify::visible-child', self.on_sq_get_visible_child ) # Page 1 self.page1 = Adw.StatusPage ( title = 'Apps', icon_name = 'view-grid-symbolic', valign = Gtk.Align.CENTER, vexpand = True ) self.stack.add_titled ( self.page1, 'page0', 'Apps' ) self.stack.get_page (self.page1).set_icon_name ( 'view-grid-symbolic' ) # Page 2 self.page2 = Adw.StatusPage ( title = 'Installed', icon_name = 'system-software-install-symbolic', valign = Gtk.Align.CENTER, vexpand = True ) self.stack.add_titled ( self.page2, 'page1', 'Installed' ) self.stack.get_page (self.page2).set_icon_name ( 'system-software-install-symbolic' ) # Page 3 self.page3 = Adw.StatusPage ( title = 'Updates', icon_name = 'view-refresh-symbolic', valign = Gtk.Align.CENTER, vexpand = True ) self.stack.add_titled ( self.page3, 'page2', 'Updates' ) self.stack.get_page (self.page3).set_icon_name ( 'view-refresh-symbolic' ) def on_sq_get_visible_child (self, widget, event): if self.sq_viewswitcher.get_visible_child() == self.wintitle: self.viewswitcherbar.set_reveal (True) else: self.viewswitcherbar.set_reveal (False) class MyApp (Adw.Application): def __init__ (self, **kwargs): super ().__init__ (**kwargs) self.connect ( 'activate', self.on_activate ) def on_activate (self, app): self.win = MainWindow ( application = app ) self.win.present () app = MyApp ( application_id = 'io.github.afacanc38.adw-viewswitcher' ) app.run (sys.argv)