#63 new indicators and fixed up old ones

graphics/elements/indicator_light.lua

@@ -5,20 +5,19 @@ local util    = require("scada-common.util")
 local element = require("graphics.element")
 
 ---@class indicator_light_args
----@field text string indicator text
+---@field label string indicator label
 ---@field colors cpair on/off colors (a/b respectively)
----@field min_text_width? integer text length if omitted
+---@field min_label_width? integer label length if omitted
 ---@field parent graphics_element
 ---@field x? integer 1 if omitted
 ---@field y? integer 1 if omitted
----@field height? integer parent height if omitted
 ---@field fg_bg cpair foreground/background colors
 
 -- new indicator light
 ---@param args indicator_light_args
 local function indicator_light(args)
     -- determine width
-    args.width = (args.min_text_width or string.len(args.text)) + 3
+    args.width = math.max(args.min_label_width or 1, string.len(args.label)) + 3
 
     -- create new graphics element base object
     local e = element.new(args)
@@ -27,10 +26,10 @@ local function indicator_light(args)
     local on_blit = util.strrep(args.colors.blit_a, 2)
     local off_blit = util.strrep(args.colors.blit_b, 2)
 
-    -- write text and initial indicator light
+    -- write label and initial indicator light
     e.setCursorPos(1, 1)
     e.window.blit("   ", "000", off_blit .. e.fg_bg.blit_bkg)
-    e.window.write(args.text)
+    e.window.write(args.label)
 
     -- on state change
     ---@param new_state boolean indicator state