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-- a dropdown on top left
local dd = lvgl.Dropdown(nil, {
-- note there are two "Orange"
options = "Apple\nBanana\nOrange\nCherry\nGrape\nRaspberry\nMelon\nOrange\nLemon\nNuts",
symbol = "\xEF\x81\x94",
dir = lvgl.DIR.RIGHT,
highlight = false,
text = nil,
align = {
type = lvgl.ALIGN.TOP_LEFT,
x_ofs = 20,
y_ofs = 20,
}
})
local list = dd:get("list")
print("get dropdown list: ", list)
list:set { text_font = lvgl.BUILTIN_FONT.MONTSERRAT_20 }
print("available options:", dd:get("options"))
local cnt = 0
dd:onevent(lvgl.EVENT.VALUE_CHANGED,
---comment
---@param obj Dropdown
---@param code ObjEventCode
function(obj, code)
obj:add_option(string.format("Option:%d", cnt), dd:get("option_cnt"))
cnt = cnt + 1
print(obj:get("selected_str"), "option_cnt" .. obj:get("option_cnt"))
end
)
-- another dropdown on top left
local dd = lvgl.Dropdown(nil, {
options = "Apple\nBanana\nOrange\nCherry\nGrape\nRaspberry\nMelon\nOrange\nLemon\nNuts",
symbol = "\xEF\x81\xB7",
dir = lvgl.DIR.BOTTOM,
text = "SetText",
selected = 5,
text_font = lvgl.BUILTIN_FONT.MONTSERRAT_20,
align = {
type = lvgl.ALIGN.BOTTOM_MID,
x_ofs = 0,
y_ofs = -20,
}
})
dd:get("list"):set { text_font = lvgl.Font("montserrat", 24) }
dd:onevent(lvgl.EVENT.VALUE_CHANGED, function(obj, code)
print(obj:get("selected_str") .. ":" .. obj:get("selected"),
"dir:" .. obj:get("dir"),
"option_index" .. dd:get("option_index", obj:get("selected_str")))
end)
lvgl.Timer {
period = 1000,
cb = function(t)
t:delete()
dd:open()
print("now dd should be opened: " .. (dd:is_open() and "open" or "closed"))
end
}
lvgl.Timer {
period = 2000,
cb = function(t)
t:delete()
dd:close()
print("now dd should be closed: " .. (dd:is_open() and "open" or "closed"))
end
}
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