Jose Falanga
769285f28a
Fixes broken input after returning from an exclusive OpenGamepadUI session: the OGPU session leaves InputPlumber intercepting the gamepad in Block mode, so Steam cannot read it. Restart InputPlumber before switching, and return to the session recorded by os-session-select instead of hardcoding 'steam' so the autologin config is preserved.
124 lines
4.1 KiB
GDScript
124 lines
4.1 KiB
GDScript
extends Plugin
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## Adds a "Switch to Steam" button to the power menu on ChimeraOS and SteamOS.
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##
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## OpenGamepadUI's built-in ChimeraOS platform support adds a "Switch to
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## Desktop" button but has no way to return to Steam game mode. This plugin
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## adds that missing button so users can round-trip between an exclusive
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## OpenGamepadUI session and Steam.
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const SESSION_SELECT_PATH := "/usr/lib/os-session-select"
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const POWER_MENU_GROUP := "power_menu"
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const BUTTON_NAME := "SwitchToSteamButton"
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const MAX_ATTEMPTS := 600
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# ChimeraOS records the session that was active before OpenGamepadUI took over
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# in this file when the OpenGamepadUI session is entered. We return to that
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# session instead of hardcoding a name so the autologin config is not mangled.
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const RETURN_SESSION_FILE := "/.config/chimeraos-session-return"
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const DEFAULT_RETURN_SESSION := "gamescope-session-steam-plus"
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# Sessions os-session-select can be told to return to (matching the values it
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# writes to the return-session file).
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const RETURN_SESSIONS := [
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"gamescope-session-steam-plus",
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"gamescope-session-steam",
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"gamescope-session-opengamepadui",
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]
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func _ready() -> void:
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logger = Log.get_logger("SessionSwitch", Log.LEVEL.INFO)
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if not _has_session_switcher():
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logger.info("No session switcher script detected: " + SESSION_SELECT_PATH)
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return
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_add_button_when_ready()
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func _add_button_when_ready() -> void:
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for i in MAX_ATTEMPTS:
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if _try_add_button():
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return
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await get_tree().process_frame
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logger.info("Power menu never became available. Skipping 'Switch to Steam' button.")
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func _try_add_button() -> bool:
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var power_menu := get_tree().get_first_node_in_group(POWER_MENU_GROUP)
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if not power_menu:
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return false
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var exit_button = power_menu.get("exit_button")
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if not exit_button:
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return false
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var container = exit_button.get_parent()
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if not container:
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return false
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if container.has_node(BUTTON_NAME):
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return true
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var button_scene := load("res://core/ui/components/card_button.tscn") as PackedScene
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if not button_scene:
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logger.error("Unable to load card_button scene.")
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return true
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var button := button_scene.instantiate()
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button.name = BUTTON_NAME
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button.set("click_focuses", false)
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button.set("text", "Switch to Steam")
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button.pressed.connect(_switch_session)
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container.add_child(button)
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container.move_child(button, exit_button.get_index())
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var focus_group = power_menu.get("focus_group")
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if focus_group and focus_group.has_method("recalculate_focus"):
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focus_group.recalculate_focus()
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logger.info("Added 'Switch to Steam' button to the power menu.")
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return true
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## Returns true if the session switcher script is present.
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func _has_session_switcher() -> bool:
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return FileAccess.file_exists(SESSION_SELECT_PATH)
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## Switches back to the session that was active before OpenGamepadUI took
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## over, using the OS session switcher.
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func _switch_session() -> void:
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_restart_inputplumber()
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var target := _get_return_session()
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var out: Array = []
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var code := OS.execute(SESSION_SELECT_PATH, [target], out)
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if code != OK:
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logger.error("Unable to switch sessions: " + _result_text(out))
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## Restarts InputPlumber before switching back so the exclusive OpenGamepadUI
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## session does not leave the gamepad intercepted (blocked) for Steam.
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## ChimeraOS ships passwordless sudo for exactly this command in its default
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## sudoers, so the switch itself remains non-interactive.
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func _restart_inputplumber() -> void:
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var out: Array = []
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var code := OS.execute("sudo", ["-n", "systemctl", "restart", "inputplumber"], out)
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if code != OK:
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logger.warning("Unable to restart InputPlumber: " + _result_text(out))
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## Returns the session recorded by os-session-select before OpenGamepadUI was
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## entered, falling back to the ChimeraOS default Steam session.
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func _get_return_session() -> String:
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var home := OS.get_environment("HOME")
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if home.is_empty():
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return DEFAULT_RETURN_SESSION
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var file := FileAccess.open(home + RETURN_SESSION_FILE, FileAccess.READ)
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if file:
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var session := file.get_as_text().strip_edges()
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if session in RETURN_SESSIONS:
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return session
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return DEFAULT_RETURN_SESSION
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func _result_text(out: Array) -> String:
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return out[0] if not out.is_empty() else ""
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