mtimer/system/formspec_creation.lua

local m = mtimer
local S = m.translator


local build_frame = function (width, height, title)
    local formspec_frame = [[
    size[+width,+height] label[0,-0.125;+title]
    container[0,+position]
    button_exit[+exitpos,0;+bwidth,1;exit;]]..S('Exit')..[[]
    button[+mainpos,0;+bwidth,1;main_menu;]]..S('Main Menu')..[[]
    button[+defaultpos,0;+bwidth,1;default;]]..S('Default')..[[]
    container_end[]
    ]]

    return formspec_frame:gsub('%+%a+', {
        ['+width'] = width,
        ['+height'] = height,
        ['+title'] = title,
        ['+position'] = height-0.6,
        ['+bwidth'] = width/3,
        ['+exitpos'] = 0,
        ['+mainpos'] = width/3,
        ['+defaultpos'] = (width/3)*2
    })
end


mtimer.show_formspec.main_menu = function (player_name)
    minetest.show_formspec(player_name, 'mtimer:main_menu', [[
    size[4,8.25]
    label[0,-0.125;]]..S('mTimer Configuration')..[[]

    button[0,0.5;4,1;set_visibility;]]..S('Set Visibility')..[[]
    button[0,1.5;4,1;set_position;]]..S('Set Position')..[[]
    button[0,2.5;4,1;set_color;]]..S('Set Color')..[[]
    button[0,3.5;4,1;timezone_offset;]]..S('Timezone Offset')..[[]
    button[0,4.5;4,1;ingame_time;]]..S('Ingame Time Representation')..[[]
    button[0,5.5;4,1;real_time;]]..S('Real World Time Representation')..[[]
    button[0,6.5;4,1;timer_text;]]..S('Set Timer Text')..[[]
    button_exit[0,7.5;4,1;exit;]]..S('Exit')..[[]
    ]])
end


mtimer.show_formspec.set_visibility = function (player_name)
    minetest.show_formspec(player_name, 'mtimer:set_visibility',
    build_frame(6, 2.25, S('mTimer Visibility'))..[[
    button[0,0.5;3,1;visible;]]..S('Visible')..[[]
    button[3,0.5;3,1;invisible;]]..S('Invisible')..[[]
    ]])
end


mtimer.show_formspec.set_position = function (player_name)
    minetest.show_formspec(player_name, 'mtimer:set_position',
    build_frame(8, 6.125, S('mTimer Position'))..[[

    image_button[0,0.5;8,4.5 ;mtimer_positions_orientation.png;pos_xx;;;false]

    image_button[0,0.5;2.67,1.5;mtimer_transparent.png;pos_tl;;;false]
    image_button[2.67,0.5;2.67,1.5;mtimer_transparent.png;pos_tc;;;false]
    image_button[5.34,0.5;2.67,1.5;mtimer_transparent.png;pos_tr;;;false]

    image_button[0,2;2.67,1.5;mtimer_transparent.png;pos_ml;;;false]
    image_button[2.67,2;2.67,1.5;mtimer_transparent.png;pos_mc;;;false]
    image_button[5.34,2;2.67,1.5;mtimer_transparent.png;pos_mr;;;false]

    image_button[0,3.5;2.67,1.5;mtimer_transparent.png;pos_bl;;;false]
    image_button[2.67,3.5;2.67,1.5;mtimer_transparent.png;pos_bc;;;false]
    image_button[5.34,3.5;2.67,1.5;mtimer_transparent.png;pos_br;;;false]

    label[0,5;]]..S('Click the position you want to place the timer at.')..[[]
    ]])
end


mtimer.show_formspec.set_color = function (player_name)
    local player = minetest.get_player_by_name(player_name)
    local color = player:get_meta():get_string(m.meta.color.key)

    local hexcolor = table.concat({
        '#',
        minetest.colorize('#ce5c00', 'rr'),
        minetest.colorize('#4e9a06', 'gg'),
        minetest.colorize('#729fcf', 'bb'),
        'AA'
    })

    minetest.show_formspec(player_name, 'mtimer:set_color',
    build_frame(6, 2.7, S('mTimer Color'))..[[
    field_close_on_enter[color;false]
    field[0.25,0.75;3,1;color;;]]..color..[[]
    box[3,0.55;0.65,0.65;]]..color..[[]
    label[-0.05,1.45;]]..S('Use `@1` format only!', hexcolor)..[[]
    ]])
end