feat(RunningApp): add suspend/resume of running games

core/systems/launcher/reaper.gd

@@ -4,6 +4,8 @@ class_name Reaper
 enum SIG {
 	KILL = 9,
 	TERM = 15,
+	CONT = 18,
+	STOP = 19,
 }
 
 
@@ -35,7 +37,12 @@ static func reap(pid: int, sig: SIG = SIG.TERM) -> void:
 		logger.info(cmd + " " + " ".join(args))
 		OS.execute(cmd, args)
 
-	logger.info("Reaped pids: " + ",".join(pids))
+	var verb := "Reaped"
+	if sig == SIG.STOP:
+		verb = "Suspended"
+	if sig == SIG.CONT:
+		verb = "Resumed"
+	logger.info(verb + " pids: " + ",".join(pids))
 
 
 # Returns an array of child PIDs that are in the given process group

core/systems/launcher/running_app.gd

@@ -20,6 +20,8 @@ signal window_ids_changed(from: PackedInt32Array, to: PackedInt32Array)
 signal app_id_changed
 ## Emitted when the app's state has changed
 signal state_changed(from: STATE, to: STATE)
+## Emitted when an app is suspended
+signal suspended(enabled: bool)
 ## Emitted when the app is focused
 signal focus_entered
 ## Emitted when the app is unfocused
@@ -51,6 +53,13 @@ var state: STATE = STATE.STARTED:
 		state = v
 		if old_state != state:
 			state_changed.emit(old_state, state)
+## Whether or not the running app is suspended
+var is_suspended := false:
+	set(v):
+		var old_value := is_suspended
+		is_suspended = v
+		if old_value != is_suspended:
+			suspended.emit(is_suspended)
 ## Time in milliseconds when the app started
 var start_time := Time.get_ticks_msec()
 ## The currently detected window ID of the application
@@ -164,6 +173,15 @@ func update() -> void:
 			OS.execute("kill", ["-15", str(steam_pid)])
 
 
+## Pauses/Resumes the running app by running 'kill -STOP' or 'kill -CONT'
+func suspend(enable: bool) -> void:
+	if enable:
+		Reaper.reap(pid, Reaper.SIG.STOP)
+	else:
+		Reaper.reap(pid, Reaper.SIG.CONT)
+	is_suspended = enable
+
+
 ## Returns the window title of the given window. If the window ID does not belong to this app,
 ## it will return an empty string.
 func get_window_title(win_id: int) -> String:

core/ui/card_ui/navigation/running_game_card.gd

@@ -32,8 +32,9 @@ var button_scene := load("res://core/ui/components/card_button.tscn") as PackedS
 @onready var content_container := $%ContentContainer
 @onready var game_logo := $%GameLogo
 @onready var game_label := $%GameLabel
-@onready var resume_button := $%ResumeButton
-@onready var exit_button := $%ExitButton
+@onready var resume_button := $%ResumeButton as CardButton
+@onready var suspend_button := $%SuspendButton as CardButton
+@onready var exit_button := $%ExitButton as CardButton
 @onready var highlight := $%HighlightTexture 
 @onready var highlight_rect := $%HighlightTextureRect
 @onready var inside_panel := $%InsidePanel
@@ -65,6 +66,13 @@ func _ready() -> void:
 		launch_manager.stop(running_app)
 		state_machine.pop_state()
 	exit_button.pressed.connect(on_exit_game)
+	var on_suspend := func():
+		running_app.suspend(not running_app.is_suspended)
+		if running_app.is_suspended:
+			suspend_button.text = "Continue"
+		else:
+			suspend_button.text = "Suspend"
+	suspend_button.pressed.connect(on_suspend)
 
 
 func _on_theme_changed() -> void:

core/ui/card_ui/navigation/running_game_card.tscn

@@ -1,18 +1,29 @@
-[gd_scene load_steps=13 format=3 uid="uid://dlouq0b0bnm41"]
+[gd_scene load_steps=14 format=3 uid="uid://dlouq0b0bnm41"]
 
 [ext_resource type="Texture2D" uid="uid://d2ipfga47yjju" path="res://assets/images/empty-grid-logo.png" id="1_4m4go"]
 [ext_resource type="Script" path="res://core/ui/card_ui/navigation/running_game_card.gd" id="1_vgpef"]
 [ext_resource type="PackedScene" uid="uid://uljtdvmuol3l" path="res://core/systems/input/focus_group_setter.tscn" id="2_ao14v"]
 [ext_resource type="PackedScene" uid="uid://d0u3rsa5qpj57" path="res://core/ui/components/subsection_label.tscn" id="2_w7u51"]
 [ext_resource type="PackedScene" uid="uid://dithv38oqgy58" path="res://core/ui/components/section_label.tscn" id="3_4x3oi"]
-[ext_resource type="Texture2D" uid="uid://cj14g5onuca3o" path="res://assets/styles/dracula/highlight.tres" id="3_o7ylm"]
 [ext_resource type="PackedScene" uid="uid://8m20p2s0v5gb" path="res://core/systems/input/focus_group.tscn" id="5_smmwr"]
 [ext_resource type="PackedScene" uid="uid://b76dvfuouhlwd" path="res://core/systems/state/state_updater.tscn" id="6_s452c"]
 [ext_resource type="Resource" uid="uid://bytra6gw0dr4c" path="res://core/ui/card_ui/main-menu/main_menu_focus.tres" id="6_xmlue"]
 [ext_resource type="Resource" uid="uid://cr544el0cqjlm" path="res://assets/state/state_machines/global_state_machine.tres" id="7_yrgt0"]
 [ext_resource type="PackedScene" uid="uid://c71ayw7pcw6u6" path="res://core/ui/components/card_button.tscn" id="8_ixs6g"]
 [ext_resource type="Resource" uid="uid://cx8u1y5j7vyss" path="res://assets/state/states/gamepad_settings.tres" id="8_nyd1y"]
 
+[sub_resource type="Image" id="Image_hqab3"]
+data = {
+"data": PackedByteArray(255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 255, 255, 0, 255, 94, 94, 127, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 255, 255, 0, 255, 93, 93, 255, 255, 94, 94, 127, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 255, 255, 0, 255, 93, 93, 255, 255, 93, 93, 255, 255, 94, 94, 127, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 255, 255, 0, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 94, 94, 127, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 93, 93, 231, 255, 94, 94, 54, 255, 94, 94, 57, 255, 93, 93, 233, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 231, 255, 94, 94, 54, 255, 94, 94, 57, 255, 93, 93, 233, 255, 93, 93, 255, 255, 93, 93, 255, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 97, 97, 42, 255, 255, 255, 0, 255, 255, 255, 0, 255, 97, 97, 42, 255, 93, 93, 233, 255, 93, 93, 232, 255, 93, 93, 41, 255, 255, 255, 0, 255, 255, 255, 0, 255, 97, 97, 42, 255, 93, 93, 233, 255, 93, 93, 232, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 96, 96, 45, 255, 93, 93, 44, 255, 255, 255, 0, 255, 97, 97, 42, 255, 97, 97, 42, 255, 255, 255, 0, 255, 96, 96, 45, 255, 93, 93, 44, 255, 255, 255, 0, 255, 97, 97, 42, 255, 97, 97, 42, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 96, 96, 45, 255, 93, 93, 235, 255, 94, 94, 234, 255, 95, 95, 43, 255, 255, 255, 0, 255, 255, 255, 0, 255, 96, 96, 45, 255, 93, 93, 235, 255, 94, 94, 234, 255, 95, 95, 43, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 93, 93, 235, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 233, 255, 95, 95, 59, 255, 96, 96, 61, 255, 93, 93, 235, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 233, 255, 95, 95, 59, 255, 96, 96, 61, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0),
+"format": "RGBA8",
+"height": 16,
+"mipmaps": false,
+"width": 16
+}
+
+[sub_resource type="ImageTexture" id="ImageTexture_ocbm3"]
+image = SubResource("Image_hqab3")
+
 [node name="RunningGameCard" type="PanelContainer"]
 anchors_preset = 10
 anchor_right = 1.0
@@ -44,7 +55,7 @@ anchor_right = 1.0
 anchor_bottom = 1.0
 grow_horizontal = 2
 grow_vertical = 2
-texture = ExtResource("3_o7ylm")
+texture = SubResource("ImageTexture_ocbm3")
 expand_mode = 1
 stretch_mode = 6
 
@@ -115,6 +126,11 @@ unique_name_in_owner = true
 layout_mode = 2
 text = "Resume"
 
+[node name="SuspendButton" parent="MarginContainer/VBoxContainer/ContentContainer" instance=ExtResource("8_ixs6g")]
+unique_name_in_owner = true
+layout_mode = 2
+text = "Suspend"
+
 [node name="GamepadButton" parent="MarginContainer/VBoxContainer/ContentContainer" instance=ExtResource("8_ixs6g")]
 layout_mode = 2
 text = "Gamepad"