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-- Load fonts first, since they're parsed asynchronously and we can do much of
-- the other UI setup in parallel.
local font = require("font")
-- require() everything else needed for the main menu + global bindings. Do
-- this now instead of in init_ui because loading and parsing the scripts can
-- take a while.
local vol = require("volume")
local theme = require("theme")
local controls = require("controls")
local time = require("time")
local sd_card = require("sd_card")
local backstack = require("backstack")
local main_menu = require("main_menu")
local function init_ui()
-- Theme is set within init_ui because the theme needs fonts to be ready.
-- Set the theme to the saved theme if available
local saved_theme = theme.theme_filename()
local res = theme.load_theme(saved_theme)
if not res then
-- Set a default theme (in case the saved theme does not load)
local default_theme = require("theme_light")
theme.set(default_theme)
end
local lock_time = time.ticks()
-- Set up property bindings that are used across every screen.
GLOBAL_BINDINGS = {
-- Show an alert with the current volume whenever the volume changes
vol.current_pct:bind(function(pct)
require("alerts").show(function()
local container = lvgl.Object(nil, {
w = lvgl.PCT(80),
h = lvgl.SIZE_CONTENT,
flex = {
flex_direction = "column",
justify_content = "center",
align_items = "center",
align_content = "center",
},
radius = 8,
pad_all = 2,
})
theme.set_subject(container, "pop_up")
container:Label {
text = string.format("Volume %i%%", pct),
text_font = font.fusion_10
}
container:Bar {
w = lvgl.PCT(100),
h = 8,
range = { min = 0, max = 100 },
value = pct,
}
container:center()
end)
end),
-- When the device has been locked for a while, default to showing the now
-- playing screen after unlocking.
controls.lock_switch:bind(function(locked)
if locked then
lock_time = time.ticks()
collectgarbage()
elseif time.ticks() - lock_time > 8000 then
local queue = require("queue")
if queue.size:get() > 0 then
require("playing"):push_if_not_shown()
end
end
end),
controls.scheme:bind(function()
-- Set up a shortcut for jumping straight to the 'now playing' screen.
-- Implemented as a binding so that the shortcut is still applied even if
-- the control scheme is changed at runtime.
local hooks = controls.hooks()
local input_method = hooks.wheel or hooks.dpad
if input_method and input_method.right then
input_method.right.long_press = function()
require("playing"):push_if_not_shown()
end
end
end),
sd_card.mounted:bind(function(mounted)
backstack.reset(main_menu:new())
end),
}
end
-- Wait for fonts to finish, then show the main menu.
-- We could show an intermediary Lua-controlled splash/loading UI whilst we
-- wait, but in practice loading the fonts takes only a few hundred ms longer
-- than all the other UI init.
font.on_loaded(function()
init_ui()
end)
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