feat(Bazzite): add new os

Author: Lumaeris

core/global/platform.gd

@@ -45,6 +45,7 @@ enum PLATFORM {
 	MANJARO,
 	ARCH_LIKE,
 	NIXOS,
+	BAZZITE,
 }
 
 var hardware_manager := load("res://core/systems/hardware/hardware_manager.tres") as HardwareManager
@@ -130,6 +131,8 @@ func _init() -> void:
 		os = load("res://core/platform/os/manjaro.tres")
 	if PLATFORM.NIXOS in flags:
 		os = load("res://core/platform/os/nixos.tres")
+	if PLATFORM.BAZZITE in flags:
+		os = load("res://core/platform/os/bazzite.tres")
 
 	if os:
 		for action in os.startup_actions:
@@ -291,6 +294,8 @@ func _read_os() -> Array[PLATFORM]:
 		flags.append(PLATFORM.ARCH_LIKE)
 	if os_info.id == "nixos":
 		flags.append(PLATFORM.NIXOS)
+	if os_info.id == "bazzite":
+		flags.append(PLATFORM.BAZZITE)
 
 	return flags
 

core/platform/os/bazzite.gd

@@ -0,0 +1,55 @@
+extends OSPlatform
+class_name PlatformBazzite
+
+const SESSION_SELECT_PATH := "/usr/bin/steamos-session-select"
+
+
+func _init() -> void:
+	logger.set_name("PlatformBazzite")
+	logger.set_level(Log.LEVEL.INFO)
+
+
+func ready(root: Window) -> void:
+	if not _has_session_switcher():
+		logger.info("No session switcher script detected")
+		return
+	_add_session_switcher(root)
+
+
+## Add a button to the power menu to allow session switching
+func _add_session_switcher(root: Window) -> void:
+	# Get the power menu
+	var power_menu := root.get_tree().get_first_node_in_group("power_menu")
+	if not power_menu:
+		logger.warn("No power menu was found. Unable to add session switcher.")
+		return
+
+	# Create a button that will perform the session switching
+	var button_scene := load("res://core/ui/components/card_button.tscn") as PackedScene
+	var switch_to_desktop := button_scene.instantiate() as CardButton
+	switch_to_desktop.click_focuses = false
+	switch_to_desktop.text = "Switch to Desktop"
+	switch_to_desktop.pressed.connect(_switch_session.bind("desktop"))
+
+	# Add the buttons just above the exit button
+	var exit_button := power_menu.exit_button as Control
+	var container := exit_button.get_parent()
+	container.add_child(switch_to_desktop)
+	container.move_child(switch_to_desktop, exit_button.get_index())
+
+	# Coerce the focus group to recalculate the focus neighbors
+	var focus_group := power_menu.focus_group as FocusGroup
+	focus_group.recalculate_focus()
+
+
+## Returns true if we detect the session switching script
+func _has_session_switcher() -> bool:
+	return FileAccess.file_exists(SESSION_SELECT_PATH)
+
+
+## Switch to the given session
+func _switch_session(name: String) -> void:
+	var out: Array = []
+	var code := OS.execute(SESSION_SELECT_PATH, [name], out)
+	if code != OK:
+		logger.error("Unable to switch sessions: " + out[0])

core/platform/os/bazzite.gd.uid

@@ -0,0 +1 @@
+uid://b0vn3jn36wcrh

core/platform/os/bazzite.tres

@@ -0,0 +1,10 @@
+[gd_resource type="Resource" script_class="PlatformBazzite" load_steps=3 format=3 uid="uid://b31wnwiw1qui4"]
+
+[ext_resource type="Script" uid="uid://b0vn3jn36wcrh" path="res://core/platform/os/bazzite.gd" id="1_a1d0f"]
+[ext_resource type="Script" uid="uid://7cj1ct3adwrg" path="res://core/platform/actions/platform_action.gd" id="2_7ctbn"]
+
+[resource]
+script = ExtResource("1_a1d0f")
+name = ""
+startup_actions = Array[ExtResource("2_7ctbn")]([])
+shutdown_actions = Array[ExtResource("2_7ctbn")]([])