113 lines
3.7 KiB
Rust
113 lines
3.7 KiB
Rust
#![deny(warnings)]
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#![warn(clippy::all)]
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use std::time::{Duration, Instant};
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use {
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emigui::{example_app::ExampleApp, widgets::*, *},
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glium::glutin,
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};
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fn main() {
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let mut events_loop = glutin::EventsLoop::new();
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let window = glutin::WindowBuilder::new().with_title("Emigui example");
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let context = glutin::ContextBuilder::new();
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let display = glium::Display::new(window, context, &events_loop).unwrap();
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// TODO: persist position/size
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display
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.gl_window()
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.set_inner_size(glutin::dpi::LogicalSize {
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width: 1024.0,
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height: 800.0,
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});
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display.gl_window().set_position((0, 24).into()); // Useful when ddeveloping and constantly restarting it
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let pixels_per_point = display.gl_window().get_hidpi_factor() as f32;
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let mut ctx = Context::new(pixels_per_point);
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let mut painter = emigui_glium::Painter::new(&display);
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let mut raw_input = emigui::RawInput {
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screen_size: {
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let (width, height) = display.get_framebuffer_dimensions();
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vec2(width as f32, height as f32) / pixels_per_point
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},
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pixels_per_point,
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..Default::default()
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};
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// used to keep track of time for animations
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let start_time = Instant::now();
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let mut running = true;
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let mut frame_start = Instant::now();
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let mut frame_times = emigui::MovementTracker::new(1000, 1.0);
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let mut example_app = ExampleApp::default();
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let mut clipboard = emigui_glium::init_clipboard();
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let memory_path = "emigui.json";
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emigui_glium::read_memory(&ctx, memory_path);
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while running {
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{
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// Keep smooth frame rate. TODO: proper vsync
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let frame_duration = frame_start.elapsed();
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if frame_duration < Duration::from_millis(33) {
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std::thread::sleep(Duration::from_millis(33) - frame_duration);
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}
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frame_start = Instant::now();
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}
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{
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raw_input.time = start_time.elapsed().as_nanos() as f64 * 1e-9;
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raw_input.scroll_delta = vec2(0.0, 0.0);
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raw_input.dropped_files.clear();
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raw_input.hovered_files.clear();
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raw_input.events.clear();
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events_loop.poll_events(|event| {
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emigui_glium::input_event(event, clipboard.as_mut(), &mut raw_input, &mut running)
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});
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}
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let emigui_start = Instant::now();
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ctx.begin_frame(raw_input.clone()); // TODO: avoid clone
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let mut ui = ctx.fullscreen_ui();
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let mut ui = ui.centered_column(ui.available_width().min(480.0));
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ui.set_align(Align::Min);
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ui.add(label!("Emigui running inside of Glium").text_style(emigui::TextStyle::Heading));
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if ui.add(Button::new("Quit")).clicked {
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running = false;
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}
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ui.add(
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label!(
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"CPU usage: {:.2} ms (excludes painting)",
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1e3 * frame_times.average().unwrap_or_default()
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)
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.text_style(TextStyle::Monospace),
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);
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ui.add(
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label!(
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"FPS: {:.1}",
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1.0 / frame_times.mean_time_interval().unwrap_or_default()
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)
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.text_style(TextStyle::Monospace),
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);
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example_app.ui(&ctx);
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let (output, paint_batches) = ctx.end_frame();
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frame_times.add(
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raw_input.time,
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(Instant::now() - emigui_start).as_secs_f64() as f32,
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);
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painter.paint_batches(&display, paint_batches, ctx.texture());
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emigui_glium::handle_output(output, &display, clipboard.as_mut());
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}
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if let Err(err) = emigui_glium::write_memory(&ctx, memory_path) {
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eprintln!("ERROR: Failed to save emigui state: {}", err);
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}
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}
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