games/minimal/mods/default/textures/default_tool_steelaxe.png

--Minetest
--Copyright (C) 2014 sapier
--
--This program is free software; you can redistribute it and/or modify
--it under the terms of the GNU Lesser General Public License as published by
--the Free Software Foundation; either version 2.1 of the License, or
--(at your option) any later version.
--
--This program is distributed in the hope that it will be useful,
--but WITHOUT ANY WARRANTY; without even the implied warranty of
--MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
--GNU Lesser General Public License for more details.
--
--You should have received a copy of the GNU Lesser General Public License along
--with this program; if not, write to the Free Software Foundation, Inc.,
--51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

ui = {}
ui.childlist = {}
ui.default = nil

--------------------------------------------------------------------------------
function ui.add(child)
	--TODO check child
	ui.childlist[child.name] = child

	return child.name
end

--------------------------------------------------------------------------------
function ui.delete(child)

	if ui.childlist[child.name] == nil then
		return false
	end

	ui.childlist[child.name] = nil
	return true
end

--------------------------------------------------------------------------------
function ui.set_default(name)
	ui.default = name
end

--------------------------------------------------------------------------------
function ui.find_by_name(name)
	return ui.childlist[name]
end

--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
-- Internal functions not to be called from user
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------

local function wordwrap_quickhack(str)
	local res = ""
	local ar = str:split("\n")
	for i = 1, #ar do
		local text = ar[i]
		-- Hack to add word wrapping.
		-- TODO: Add engine support for wrapping in formspecs
		while #text > 80 do
			if res ~= "" then
				res = res .. ","
			end
			res = res .. core.formspec_escape(string.sub(text, 1, 79))
			text = string.sub(text, 80, #text)
		end
		if res ~= "" then
			res = res .. ","
		end
		res = res .. core.formspec_escape(text)
	end
	return res
end

--------------------------------------------------------------------------------
function ui.update()
	local formspec = ""

	-- handle errors
	if gamedata ~= nil and gamedata.reconnect_requested then
		formspec = wordwrap_quickhack(gamedata.errormessage or "")
		formspec = "size[12,5]" ..
ofs	hex dump	ascii
0000	89 50 4e 47 0d 0a 1a 0a 00 00 00 0d 49 48 44 52 00 00 00 10 00 00 00 10 08 03 00 00 00 28 2d 0f	.PNG........IHDR.............(-.
0020	53 00 00 00 12 50 4c 54 45 00 00 00 42 22 09 5d 3d 24 9c 9c 9c c0 c0 c0 e6 e6 e6 30 21 30 00 00	S....PLTE...B".]=$.........0!0..
0040	00 00 01 74 52 4e 53 00 40 e6 d8 66 00 00 00 28 49 44 41 54 78 da bd c8 31 02 00 20 08 80 40 4b	...tRNS.@..f...(IDATx...1.....@K
0060	fc ff 97 9b c5 c5 29 b6 23 f6 95 4d c9 e8 30 4e 42 b6 71 8f 1d 5f ed 1e 43 01 00 68 f9 ea 3b 70	......).#..M..0NB.q.._..C..h..;p
0080	00 00 00 00 49 45 4e 44 ae 42 60 82	....IEND.B`.