Add keep_screen_on editor setting

core/config/project_settings.cpp

@@ -1472,10 +1472,6 @@ ProjectSettings::ProjectSettings() {
 	GLOBAL_DEF(PropertyInfo(Variant::INT, "display/window/size/window_height_override", PROPERTY_HINT_RANGE, "0,4320,1,or_greater"), 0); // 8K resolution
 
 	GLOBAL_DEF("display/window/energy_saving/keep_screen_on", true);
-#ifdef TOOLS_ENABLED
-	GLOBAL_DEF("display/window/energy_saving/keep_screen_on.editor_hint", false);
-#endif
-
 	GLOBAL_DEF("animation/warnings/check_invalid_track_paths", true);
 	GLOBAL_DEF("animation/warnings/check_angle_interpolation_type_conflicting", true);
 

doc/classes/EditorSettings.xml

@@ -675,6 +675,9 @@
 		<member name="interface/editor/import_resources_when_unfocused" type="bool" setter="" getter="">
 			If [code]true[/code], (re)imports resources even if the editor window is unfocused or minimized. If [code]false[/code], resources are only (re)imported when the editor window is focused. This can be set to [code]true[/code] to speed up iteration by starting the import process earlier when saving files in the project folder. This also allows getting visual feedback on changes without having to click the editor window, which is useful with multi-monitor setups. The downside of setting this to [code]true[/code] is that it increases idle CPU usage and may steal CPU time from other applications when importing resources.
 		</member>
+		<member name="interface/editor/keep_screen_on" type="bool" setter="" getter="">
+			If [code]true[/code], keeps the screen on (even in case of inactivity), so the screensaver does not take over. Works on desktop and mobile platforms.
+		</member>
 		<member name="interface/editor/localize_settings" type="bool" setter="" getter="">
 			If [code]true[/code], setting names in the editor are localized when possible.
 			[b]Note:[/b] This setting affects most [EditorInspector]s in the editor UI, primarily Project Settings and Editor Settings. To control names displayed in the Inspector dock, use [member interface/inspector/default_property_name_style] instead.

doc/classes/ProjectSettings.xml

@@ -814,9 +814,6 @@
 		<member name="display/window/energy_saving/keep_screen_on" type="bool" setter="" getter="" default="true">
 			If [code]true[/code], keeps the screen on (even in case of inactivity), so the screensaver does not take over. Works on desktop and mobile platforms.
 		</member>
-		<member name="display/window/energy_saving/keep_screen_on.editor_hint" type="bool" setter="" getter="" default="false">
-			Editor-only override for [member display/window/energy_saving/keep_screen_on]. Does not affect running project.
-		</member>
 		<member name="display/window/handheld/orientation" type="int" setter="" getter="" default="0">
 			The default screen orientation to use on mobile devices. See [enum DisplayServer.ScreenOrientation] for possible values.
 			[b]Note:[/b] When set to a portrait orientation, this project setting does not flip the project resolution's width and height automatically. Instead, you have to set [member display/window/size/viewport_width] and [member display/window/size/viewport_height] accordingly.

editor/editor_node.cpp

@@ -707,6 +707,7 @@ void EditorNode::_notification(int p_what) {
 
 			RenderingServer::get_singleton()->viewport_set_disable_2d(get_scene_root()->get_viewport_rid(), true);
 			RenderingServer::get_singleton()->viewport_set_environment_mode(get_viewport()->get_viewport_rid(), RenderingServer::VIEWPORT_ENVIRONMENT_DISABLED);
+			DisplayServer::get_singleton()->screen_set_keep_on(EDITOR_GET("interface/editor/keep_screen_on"));
 
 			feature_profile_manager->notify_changed();
 
@@ -805,6 +806,7 @@ void EditorNode::_notification(int p_what) {
 			if (EditorSettings::get_singleton()->check_changed_settings_in_group("interface/editor")) {
 				_update_update_spinner();
 				_update_vsync_mode();
+				DisplayServer::get_singleton()->screen_set_keep_on(EDITOR_GET("interface/editor/keep_screen_on"));
 			}
 
 #if defined(MODULE_GDSCRIPT_ENABLED) || defined(MODULE_MONO_ENABLED)

editor/editor_settings.cpp

@@ -461,6 +461,7 @@ void EditorSettings::_load_defaults(Ref<ConfigFile> p_extra_config) {
 	EDITOR_SETTING(Variant::INT, PROPERTY_HINT_ENUM, "interface/editor/show_update_spinner", 0, "Auto (Disabled),Enabled,Disabled")
 #endif
 
+	_initial_set("interface/editor/keep_screen_on", false);
 	EDITOR_SETTING_USAGE(Variant::INT, PROPERTY_HINT_RANGE, "interface/editor/low_processor_mode_sleep_usec", 6900, "1,100000,1", PROPERTY_USAGE_DEFAULT | PROPERTY_USAGE_RESTART_IF_CHANGED)
 	// Default unfocused usec sleep is for 10 FPS. Allow an unfocused FPS limit
 	// as low as 1 FPS for those who really need low power usage (but don't need

editor/project_manager.cpp

@@ -93,6 +93,7 @@ void ProjectManager::_notification(int p_what) {
 		} break;
 
 		case NOTIFICATION_READY: {
+			DisplayServer::get_singleton()->screen_set_keep_on(EDITOR_GET("interface/editor/keep_screen_on"));
 			const int default_sorting = (int)EDITOR_GET("project_manager/sorting_order");
 			filter_option->select(default_sorting);
 			project_list->set_order_option(default_sorting);