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https://github.com/MikaylaFischler/cc-mek-scada.git
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81 lines
2.3 KiB
Lua
81 lines
2.3 KiB
Lua
-- Icon Indicator Graphics Element
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local element = require("graphics.element")
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---@class icon_sym_color
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---@field color cpair
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---@field symbol string
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---@class icon_indicator_args
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---@field label string indicator label
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---@field states table state color and symbol table
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---@field value? integer|boolean default state, defaults to 1 (true = 2, false = 1)
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---@field min_label_width? integer label length if omitted
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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
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---@field hidden? boolean true to hide on initial draw
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-- new icon indicator
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---@nodiscard
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---@param args icon_indicator_args
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---@return graphics_element element, element_id id
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local function icon(args)
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element.assert(type(args.label) == "string", "label is a required field")
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element.assert(type(args.states) == "table", "states is a required field")
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args.height = 1
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args.width = math.max(args.min_label_width or 1, string.len(args.label)) + 4
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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 = args.value or 1
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if e.value == true then e.value = 2 end
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-- state blit strings
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local state_blit_cmds = {}
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for i = 1, #args.states do
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local sym_color = args.states[i] ---@type icon_sym_color
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table.insert(state_blit_cmds, {
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text = " " .. sym_color.symbol .. " ",
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fgd = string.rep(sym_color.color.blit_fgd, 3),
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bkg = string.rep(sym_color.color.blit_bkg, 3)
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})
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end
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-- on state change
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---@param new_state integer|boolean indicator state
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function e.on_update(new_state)
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new_state = new_state or 1
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if new_state == true then new_state = 2 end
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local blit_cmd = state_blit_cmds[new_state]
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e.value = new_state
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e.w_set_cur(1, 1)
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e.w_blit(blit_cmd.text, blit_cmd.fgd, blit_cmd.bkg)
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end
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-- set indicator state
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---@param val integer|boolean indicator state
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function e.set_value(val) e.on_update(val) end
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-- element redraw
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function e.redraw()
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e.w_set_cur(5, 1)
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e.w_write(args.label)
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e.on_update(e.value)
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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 icon
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