extern crate glium;
extern crate glium_brush;

use glium::{glutin, Surface};
use glium::glutin::{Api, GlProfile, GlRequest};

use glium_brush::GlyphBrush;
use glium_brush::glyph_brush::{
	rusttype::Font, Section,
};

pub fn main() {
	let mut events_loop = glutin::EventsLoop::new();
	let window = glutin::WindowBuilder::new();
	let context = glutin::ContextBuilder::new().with_gl_profile(GlProfile::Core)
			.with_gl(GlRequest::Specific(Api::OpenGl, (3, 2)))
			.with_srgb(true);
	let display = glium::Display::new(window, context, &events_loop).unwrap();

	let dejavu: &[u8] = include_bytes!("../fonts/DejaVuSans-2.37.ttf");
	let fonts = vec![Font::from_bytes(dejavu).unwrap()];

	let mut glyph_brush = GlyphBrush::new(&display, fonts);

	loop {
		let screen_dims = display.get_framebuffer_dimensions();

		glyph_brush.queue(Section {
			text : "Hello, World!",
			bounds : (screen_dims.0 as f32, screen_dims.1 as f32 / 2.0),
			..Section::default()
		});
		glyph_brush.queue(Section {
			text : "This is in the middle of the screen",
			bounds : (screen_dims.0 as f32, screen_dims.1 as f32 / 2.0),
			screen_position : (0.0, screen_dims.1 as f32 / 2.0),
			scale : glyph_brush::rusttype::Scale::uniform(16.0),
			..Section::default()
		});

		let mut target = display.draw();
		target.clear_color_and_depth((1.0, 1.0, 1.0, 0.0), 1.0);
		glyph_brush.draw_queued(&display, &mut target);
		target.finish().unwrap();

		let mut exit = false;
		events_loop.poll_events(|event| {
			match event {
				glutin::Event::WindowEvent { event, .. } => match event {
					glutin::WindowEvent::CloseRequested => exit = true,
					_ => (),
				},
				_ => (),
			}
		});
		if exit {
			break;
		}
	}
}