use glam::{UVec2, Vec2}; use glium::{Surface, backend::glutin::SimpleWindowBuilder}; use winit::{ event::{Event, WindowEvent}, event_loop::{EventLoopBuilder, ControlFlow} }; use hui::UiInstance; use hui_glium::GliumUiRenderer; /// Generates a `main` function that initializes glium renderer, `UiInstance`, and runs the event loop. macro_rules! ui_main { ($name:literal, init: $closure0:expr, run: $closure1:expr) => { fn main() { $crate::boilerplate::ui($closure0, $closure1, $name); } }; (init: $closure0:expr, run: $closure1:expr) => { fn main() { $crate::boilerplate::ui($closure0, $closure1, "hUI example"); } }; ($closure: expr) => { fn main() { $crate::boilerplate::ui(|_|(), $closure, "hUI example"); } }; } /// Initializes glium renderer, `UiInstance`, and runs the event loop. pub fn ui( mut init: impl FnMut(&mut UiInstance) -> T, mut draw: impl FnMut(&mut UiInstance, Vec2, &mut T), name: &'static str ) { kubi_logging::init(); let event_loop = EventLoopBuilder::new().build().unwrap(); let (window, display) = SimpleWindowBuilder::new() .with_title(name) .build(&event_loop); let mut hui = UiInstance::new(); let mut backend = GliumUiRenderer::new(&display); let mut result = init(&mut hui); event_loop.run(|event, window_target| { window.request_redraw(); window_target.set_control_flow(ControlFlow::Poll); hui_winit::handle_winit_event(&mut hui, &event); match event { Event::WindowEvent { event, .. } => match event { WindowEvent::CloseRequested => { window_target.exit(); }, WindowEvent::Resized(size) => { display.resize((size.width, size.height)); }, WindowEvent::RedrawRequested => { let mut frame = display.draw(); frame.clear_color_srgb(0.5, 0.5, 0.5, 1.); hui.begin(); let size = UVec2::from(display.get_framebuffer_dimensions()).as_vec2(); draw(&mut hui, size, &mut result); hui.end(); backend.update(&hui); backend.draw(&mut frame, size); frame.finish().unwrap(); }, _ => (), }, Event::Suspended => { #[cfg(target_os = "android")] window_target.exit(); }, _ => (), } }).unwrap(); }