mirror of
https://github.com/MikaylaFischler/cc-mek-scada.git
synced 2024-08-30 18:22:34 +00:00
109 lines
3.6 KiB
Lua
109 lines
3.6 KiB
Lua
-- Radio Button Graphics Element
|
|
|
|
local element = require("graphics.element")
|
|
|
|
---@class radio_button_args
|
|
---@field options table button options
|
|
---@field callback function function to call on touch
|
|
---@field radio_colors cpair colors for radio button center dot when active (a) or inactive (b)
|
|
---@field radio_bg color background color of radio button
|
|
---@field default? integer default state, defaults to options[1]
|
|
---@field min_width? integer text length + 2 if omitted
|
|
---@field parent graphics_element
|
|
---@field id? string element id
|
|
---@field x? integer 1 if omitted
|
|
---@field y? integer 1 if omitted
|
|
---@field fg_bg? cpair foreground/background colors
|
|
|
|
-- new radio button list (latch selection, exclusively one button at a time)
|
|
---@param args radio_button_args
|
|
---@return graphics_element element, element_id id
|
|
local function radio_button(args)
|
|
assert(type(args.options) == "table", "graphics.elements.controls.radio_button: options is a required field")
|
|
assert(#args.options > 0, "graphics.elements.controls.radio_button: at least one option is required")
|
|
assert(type(args.callback) == "function", "graphics.elements.controls.radio_button: callback is a required field")
|
|
assert(type(args.default) == "nil" or (type(args.default) == "number" and args.default > 0),
|
|
"graphics.elements.controls.radio_button: default must be nil or a number > 0")
|
|
assert(type(args.min_width) == "nil" or (type(args.min_width) == "number" and args.min_width > 0),
|
|
"graphics.elements.controls.radio_button: min_width must be nil or a number > 0")
|
|
|
|
-- one line per option
|
|
args.height = #args.options
|
|
|
|
-- determine widths
|
|
local max_width = 1
|
|
for i = 1, #args.options do
|
|
local opt = args.options[i] ---@type string
|
|
if string.len(opt) > max_width then
|
|
max_width = string.len(opt)
|
|
end
|
|
end
|
|
|
|
local button_text_width = math.max(max_width, args.min_width or 0)
|
|
|
|
args.width = button_text_width + 2
|
|
|
|
-- create new graphics element base object
|
|
local e = element.new(args)
|
|
|
|
-- button state (convert nil to 1 if missing)
|
|
e.value = args.default or 1
|
|
|
|
-- show the button state
|
|
local function draw()
|
|
for i = 1, #args.options do
|
|
local opt = args.options[i] ---@type string
|
|
|
|
e.window.setCursorPos(1, i)
|
|
|
|
if e.value == i then
|
|
-- show as selected
|
|
e.window.setTextColor(args.radio_colors.color_a)
|
|
e.window.setBackgroundColor(args.radio_bg)
|
|
else
|
|
-- show as unselected
|
|
e.window.setTextColor(args.radio_colors.color_b)
|
|
e.window.setBackgroundColor(args.radio_bg)
|
|
end
|
|
|
|
e.window.write("\x88")
|
|
|
|
e.window.setTextColor(args.radio_bg)
|
|
e.window.setBackgroundColor(e.fg_bg.bkg)
|
|
e.window.write("\x95")
|
|
|
|
-- write button text
|
|
e.window.setTextColor(e.fg_bg.fgd)
|
|
e.window.setBackgroundColor(e.fg_bg.bkg)
|
|
e.window.write(opt)
|
|
end
|
|
end
|
|
|
|
-- handle mouse interaction
|
|
---@param event mouse_interaction mouse event
|
|
function e.handle_mouse(event)
|
|
-- determine what was pressed
|
|
if e.enabled then
|
|
if args.options[event.y] ~= nil then
|
|
e.value = event.y
|
|
draw()
|
|
args.callback(e.value)
|
|
end
|
|
end
|
|
end
|
|
|
|
-- set the value
|
|
---@param val integer new value
|
|
function e.set_value(val)
|
|
e.value = val
|
|
draw()
|
|
end
|
|
|
|
-- initial draw
|
|
draw()
|
|
|
|
return e.get()
|
|
end
|
|
|
|
return radio_button
|