Show HN: A backend agnostic Ruby framework for building reactive desktop apps

Summary

Hokusai A Ruby library for authoring GUI applications Getting started In your Gemfile gem "hokusai-zero", "0.1.7" In order to run an application, you will need to install a backend Raylib Install raylib >= 5.0 Write your app Run app with RAYLIB_PATH=/libpath/for/libraylib.(so|dylib) ruby <your app>.rb SDL2 Example counter application require "hokusai" require "hokusai/backends/raylib" class Counter < Hokusai::Block template <<-EOF [template] vblock hblock label { :content="count" size="130" :color="count_color" } hblock vblock label { content="Add" @click="increment" } vblock label { content="Subtract" @click="decrement" } EOF uses( vblock: Hokusai::Blocks::Vblock, hblock: Hokusai::Blocks::Hblock, label: Hokusai::Blocks::Label, ) attr_accessor :count def increment(event) self.count += 1 end def decrement(event) self.count -= 1 end def count_color self.count > 0 ? [0,0,255] : [255,0,0] end def initialize(**args) @count = 0 super(**args) end end Hokusai::Backends::RaylibBackend.run(Counter) do |config| config.width = 500 config.height = 500 config.title = "Counter application" end Development The build tooling of this project is xmake. You will need it to compile dependencies and run demos. Hokusai contains a tree-sitter grammar to parse templates, and uses md4c to parse markdown. When compiling the C portion of hokusai, tree-sitter will be statically linked. Requirements: xmake to build dependencies Ruby to run applications Steps: Download project Install dependencies bundle install xmake q hoku-tree-sitter xmake q hoku-md4c For Raylib For SDL2 xmake q libsdl xmake q libsdl_gfx xmake q lbsdl_ttf xmake q libsdl_image Build grammar and ast code Run specs Run a demo License Hokusai is released under the Peer Production License