MoonNuklear is a Lua binding library for Mitcha Mettke's Nuklear immediate mode GUI toolkit.
It runs on GNU/Linux, on MacOS, and on Windows (MSYS2/MinGW) and requires Lua (>=5.3).
Author: Stefano Trettel
MIT/X11 license (same as Lua). See LICENSE.
See the Reference Manual.
Setup the build environment as described here, then:
$ git clone https://github.com/stetre/moonnuklear
$ cd moonnuklear
moonnuklear$ make
moonnuklear$ make install # or 'sudo make install' (Ubuntu and MacOS)The example below shows the front-end implementation of a simple GUI.
The backend and other examples can be found in the examples/ directory contained in the release package.
local nk = require("moonnuklear")
local backend = require("backend")
local op = 'easy'
local value = 0.6
local window_flags = nk.WINDOW_BORDER|nk.WINDOW_MOVABLE|nk.WINDOW_CLOSABLE
local function hellogui(ctx)
if nk.window_begin(ctx, "Show", {50, 50, 220, 220}, window_flags) then
-- fixed widget pixel width
nk.layout_row_static(ctx, 30, 80, 1)
if nk.button(ctx, nil, "button") then
-- ... event handling ...
print("button pressed")
end
-- fixed widget window ratio width
nk.layout_row_dynamic(ctx, 30, 2)
if nk.option(ctx, 'easy', op == 'easy') then op = 'easy' end
if nk.option(ctx, 'hard', op == 'hard') then op = 'hard' end
-- custom widget pixel width
nk.layout_row_begin(ctx, 'static', 30, 2)
nk.layout_row_push(ctx, 50)
nk.label(ctx, "Volume:", nk.TEXT_LEFT)
nk.layout_row_push(ctx, 110)
value = nk.slider(ctx, 0, value, 1.0, 0.1)
nk.layout_row_end(ctx)
end
nk.window_end(ctx)
end
-- Init the backend and enter the event loop:
backend.init(640, 380, "Hello", true, nil)
backend.loop(hellogui, {.13, .29, .53, 1}, 30)
The script can be executed at the shell prompt with the standard Lua interpreter:
$ lua hello.lua