handheld t-rays have cable/pipe/blueprint toggles and unique ability icons

code/WorkInProgress/AbilityItem.dm

@@ -389,14 +389,13 @@
 ////////////////////////////////////////////////////////////
 
 /obj/ability_button/tscanner_toggle
-	name = "Toggle T-Scanner"
+	name = "Toggle T-Ray Scanner"
 	icon_state = "lightoff" //TODO: make bespoke sprites for this I guess
 
 	execute_ability()
 		var/obj/item/device/t_scanner/J = the_item
-		J.AttackSelf(the_mob)
-		if(J.on) icon_state = "lighton"
-		else  icon_state = "lightoff"
+		J.set_on(!J.on, the_mob) // only turns on/off
+		icon_state = J.on ? "lighton" : "lightoff"
 		..()
 
 ////////////////////////////////////////////////////////////

code/modules/interface/multiContext/context_actions.dm

@@ -1289,3 +1289,45 @@
 		return robospray in user
 	execute(var/obj/item/robospray/robospray, var/mob/user)
 		robospray.change_reagent(src.reagent_id, user)
+
+/datum/contextAction/t_scanner
+	icon = 'icons/ui/context16x16.dmi'
+	close_clicked = TRUE
+	close_moved = FALSE
+	desc = ""
+
+	checkRequirements(var/obj/item/device/t_scanner/t_scanner, mob/user)
+		return t_scanner in user
+
+	active
+		name = "Turn on/off"
+		icon_state = "bulb"
+
+		execute(var/obj/item/device/t_scanner/t_scanner, mob/user)
+			t_scanner.set_on(!t_scanner.on)
+			var/obj/ability_button/tscanner_toggle/tscanner_button = locate(/obj/ability_button/tscanner_toggle) in t_scanner.ability_buttons
+			tscanner_button.icon_state = t_scanner.on ? "lighton" : "lightoff"
+
+	underfloor_cables
+		name = "Underfloor Power Cables"
+		desc = "Toggle showing power cables located under the floor."
+		icon_state = "cut"
+
+		execute(obj/item/device/t_scanner/t_scanner, mob/user)
+			t_scanner.set_underfloor_cables(!t_scanner.show_underfloor_cables, user)
+
+	underfloor_disposal_pipes
+		name = "Underfloor Disposal Pipes"
+		desc = "Toggle showing disposal pipes located under the floor."
+		icon_state = "weld"
+
+		execute(obj/item/device/t_scanner/t_scanner, mob/user)
+			t_scanner.set_underfloor_disposal_pipes(!t_scanner.show_underfloor_disposal_pipes, user)
+
+	blueprint_disposal_pipes
+		name = "Disposal Pipe Blueprints"
+		desc = "Toggle showing the original blueprints for disposal pipes."
+		icon_state = "cog"
+
+		execute(obj/item/device/t_scanner/t_scanner, mob/user)
+			t_scanner.set_blueprint_disposal_pipes(!t_scanner.show_blueprint_disposal_pipes, user)

code/obj/item/device/scanners.dm

@@ -16,9 +16,9 @@ TYPEINFO(/obj/item/device/t_scanner)
 
 /obj/item/device/t_scanner
 	name = "T-ray scanner"
-	desc = "A terahertz-ray emitter and scanner used to detect underfloor objects such as cables and pipes."
+	desc = "A tuneable terahertz-ray emitter and scanner used to detect underfloor objects such as cables and pipes."
 	icon_state = "t-ray0"
-	var/on = 0
+	var/on = FALSE
 	flags = FPRINT | TABLEPASS
 	c_flags = ONBELT
 	w_class = W_CLASS_SMALL
@@ -29,6 +29,18 @@ TYPEINFO(/obj/item/device/t_scanner)
 	var/client/last_client = null
 	var/image/last_display = null
 	var/find_interesting = TRUE
+	var/list/setting_context_actions
+	contextLayout = new /datum/contextLayout/experimentalcircle
+	var/show_underfloor_cables = TRUE
+	var/show_underfloor_disposal_pipes = TRUE
+	var/show_blueprint_disposal_pipes = TRUE
+
+	New()
+		..()
+		setting_context_actions = list()
+		for(var/actionType in childrentypesof(/datum/contextAction/t_scanner)) //see context_actions.dm for those
+			var/datum/contextAction/t_scanner/action = new actionType(src)
+			setting_context_actions += action
 
 	proc/set_on(new_on, mob/user=null)
 		on = new_on
@@ -40,8 +52,23 @@ TYPEINFO(/obj/item/device/t_scanner)
 		else
 			processing_items |= src
 
+	proc/set_underfloor_cables(state, mob/user=null)
+		show_underfloor_cables = state
+		if(user)
+			boutput(user, "You switch [src] to [show_underfloor_cables ? "show" : "hide"] underfloor cables.")
+
+	proc/set_underfloor_disposal_pipes(state, mob/user=null)
+		show_underfloor_disposal_pipes = state
+		if(user)
+			boutput(user, "You switch [src] to [show_underfloor_disposal_pipes ? "show" : "hide"] underfloor disposal pipes.")
+
+	proc/set_blueprint_disposal_pipes(state, mob/user=null)
+		show_blueprint_disposal_pipes = state
+		if(user)
+			boutput(user, "You switch [src] to [show_blueprint_disposal_pipes ? "show" : "hide"] disposal pipe blueprints.")
+
 	attack_self(mob/user)
-		set_on(!on, user)
+		user.showContextActions(setting_context_actions, src, contextLayout)
 
 	afterattack(atom/A as mob|obj|turf|area, mob/user as mob)
 		if (istype(A, /turf))
@@ -100,7 +127,11 @@ TYPEINFO(/obj/item/device/t_scanner)
 						continue
 				else if(isobj(A))
 					var/obj/O = A
-					if(O.level == OVERFLOOR && !istype(O, /obj/disposalpipe)) // disposal pipes handled below
+					if (O.level == OVERFLOOR && !istype(O, /obj/disposalpipe))
+						continue // show unsecured pipes behind walls
+					if (!show_underfloor_cables && istype(O, /obj/cable))
+						continue
+					if (!show_underfloor_disposal_pipes && istype(O, /obj/disposalpipe))
 						continue
 				var/image/img = image(A.icon, icon_state=A.icon_state, dir=A.dir)
 				img.plane = PLANE_SCREEN_OVERLAYS
@@ -110,10 +141,10 @@ TYPEINFO(/obj/item/device/t_scanner)
 				img.appearance_flags = RESET_ALPHA | RESET_COLOR | PIXEL_SCALE
 				display.overlays += img
 
-			if (T.disposal_image)
+			if (show_blueprint_disposal_pipes && T.disposal_image)
 				display.overlays += T.disposal_image
 
-			if( length(display.overlays))
+			if(length(display.overlays))
 				display.plane = PLANE_SCREEN_OVERLAYS
 				display.pixel_x = (T.x - center.x) * 32
 				display.pixel_y = (T.y - center.y) * 32
@@ -134,6 +165,7 @@ TYPEINFO(/obj/item/device/t_scanner)
 
 /obj/item/device/t_scanner/pda
 	name = "PDA T-ray scanner"
+	desc = "A terahertz-ray emitter and scanner used to detect underfloor objects such as cables and pipes."
 	find_interesting = FALSE
 
 /*