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https://github.com/MikaylaFischler/cc-mek-scada.git
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73 lines
2.2 KiB
Lua
73 lines
2.2 KiB
Lua
-- Signal Bars Graphics Element
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local util = require("scada-common.util")
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local element = require("graphics.element")
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---@class signal_bar_args
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---@field colors_low_med? cpair color a for low signal quality, color b for medium signal quality
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---@field disconnect_color? color color for the 'x' on disconnect
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---@field parent graphics_element
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---@field id? string element id
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---@field x? integer 1 if omitted
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---@field y? integer auto incremented if omitted
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---@field fg_bg? cpair foreground/background colors (foreground is used for high signal quality)
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---@field hidden? boolean true to hide on initial draw
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-- new signal bar
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---@nodiscard
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---@param args signal_bar_args
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---@return graphics_element element, element_id id
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local function signal_bar(args)
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args.height = 1
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args.width = 2
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-- create new graphics element base object
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local e = element.new(args)
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e.value = 0
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local blit_bkg = args.fg_bg.blit_bkg
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local blit_0, blit_1, blit_2, blit_3 = args.fg_bg.blit_fgd, args.fg_bg.blit_fgd, args.fg_bg.blit_fgd, args.fg_bg.blit_fgd
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if type(args.colors_low_med) == "table" then
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blit_1 = args.colors_low_med.blit_a or blit_1
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blit_2 = args.colors_low_med.blit_b or blit_2
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end
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if util.is_int(args.disconnect_color) then blit_0 = colors.toBlit(args.disconnect_color) end
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-- on state change (0 = offline, 1 through 3 = low to high signal)
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---@param new_state integer signal state
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function e.on_update(new_state)
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e.value = new_state
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e.redraw()
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end
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-- set signal state (0 = offline, 1 through 3 = low to high signal)
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---@param val integer signal state
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function e.set_value(val) e.on_update(val) end
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-- draw label and signal bar
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function e.redraw()
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e.w_set_cur(1, 1)
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if e.value == 1 then
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e.w_blit("\x9f ", blit_bkg .. blit_bkg, blit_1 .. blit_bkg)
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elseif e.value == 2 then
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e.w_blit("\x9f\x94", blit_bkg .. blit_2, blit_2 .. blit_bkg)
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elseif e.value == 3 then
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e.w_blit("\x9f\x81", blit_bkg .. blit_bkg, blit_3 .. blit_3)
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else
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e.w_blit(" x", blit_0 .. blit_0, blit_bkg .. blit_bkg)
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end
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end
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-- initial draw
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e.redraw()
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return e.complete()
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end
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return signal_bar
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