mirror of
https://github.com/MikaylaFischler/cc-mek-scada.git
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110 lines
3.7 KiB
Lua
110 lines
3.7 KiB
Lua
-- App Page Multi-Pane Display Graphics Element
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local util = require("scada-common.util")
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local core = require("graphics.core")
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local element = require("graphics.element")
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local events = require("graphics.events")
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local MOUSE_CLICK = core.events.MOUSE_CLICK
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---@class app_multipane_args
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---@field panes table panes to swap between
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---@field nav_colors cpair on/off colors (a/b respectively) for page navigator
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---@field scroll_nav boolean? true to allow scrolling to change the active pane
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---@field drag_nav boolean? true to allow mouse dragging to change the active pane (on mouse up)
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---@field callback function? function to call when pane is changed by mouse interaction
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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 width? integer parent width if omitted
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---@field height? integer parent height if omitted
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---@field gframe? graphics_frame frame instead of x/y/width/height
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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 app multipane element
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---@nodiscard
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---@param args app_multipane_args
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---@return graphics_element element, element_id id
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local function multipane(args)
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element.assert(type(args.panes) == "table", "panes is a required field")
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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 = 1
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local nav_x_start = math.floor((e.frame.w / 2) - (#args.panes / 2)) + 1
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local nav_x_end = math.floor((e.frame.w / 2) - (#args.panes / 2)) + #args.panes
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-- show the selected pane
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function e.redraw()
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for i = 1, #args.panes do args.panes[i].hide() end
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args.panes[e.value].show()
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-- draw page indicator dots
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for i = 1, #args.panes do
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e.w_set_cur(nav_x_start + (i - 1), e.frame.h)
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e.w_set_fgd(util.trinary(i == e.value, args.nav_colors.color_a, args.nav_colors.color_b))
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e.w_write("\x07")
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end
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end
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-- handle mouse interaction
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---@param event mouse_interaction mouse event
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function e.handle_mouse(event)
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local initial = e.value
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if e.enabled then
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if event.current.y == e.frame.h and event.current.x >= nav_x_start and event.current.x <= nav_x_end then
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local id = event.current.x - nav_x_start + 1
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if event.type == MOUSE_CLICK.TAP then
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e.set_value(id)
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elseif event.type == MOUSE_CLICK.UP then
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e.set_value(id)
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end
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end
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end
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if args.scroll_nav then
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if event.type == events.MOUSE_CLICK.SCROLL_DOWN then
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e.set_value(e.value + 1)
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elseif event.type == events.MOUSE_CLICK.SCROLL_UP then
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e.set_value(e.value - 1)
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end
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end
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if args.drag_nav then
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local x1, x2 = event.initial.x, event.current.x
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if event.type == events.MOUSE_CLICK.UP and e.in_frame_bounds(x1, event.initial.y) and e.in_frame_bounds(x1, event.current.y) then
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if x2 > x1 then
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e.set_value(e.value - 1)
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elseif x2 < x1 then
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e.set_value(e.value + 1)
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end
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end
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end
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if e.value ~= initial and type(args.callback) == "function" then args.callback(e.value) end
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end
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-- select which pane is shown
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---@param value integer pane to show
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function e.set_value(value)
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if (e.value ~= value) and (value > 0) and (value <= #args.panes) then
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e.value = value
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e.redraw()
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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 multipane
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