extern crate blit;
extern crate direct_gui;
extern crate minifb;

use blit::Color;
use direct_gui::controls::*;
use direct_gui::*;
use minifb::*;

use std::str::FromStr;

const WIDTH: usize = 400;
const HEIGHT: usize = 160;

fn main() {
    let mut buffer: Vec<u32> = vec![0x22_22_22; WIDTH * HEIGHT];

    let mut window = Window::new(
        "direct-gui label example - ESC to exit",
        WIDTH,
        HEIGHT,
        WindowOptions::default(),
    )
    .expect("Unable to open window");

    let mut gui = Gui::new((WIDTH as i32, HEIGHT as i32));

    let default_font = gui.default_font();
    gui.register(
        Label::new(default_font)
            .with_pos(10, 10)
            .with_text("This is a label with a default font\nand a line break."),
    );

    let font = gui
        .load_font_sprite_from_file(
            "assets/TorusSans.png",
            FontSettings {
                start: '!',
                char_size: (9, 9),
                leading_offset: 2,
                mask_color: Color::from_u32(0xFF_00_FF),
            },
        )
        .unwrap();
    gui.register(
        Label::new(font)
            .with_pos(10, 40)
            .with_text("This is a label with a custom font."),
    );

    let font = gui
        .load_font_sprite_from_file(
            "assets/TorusSansGradient.png",
            FontSettings {
                start: '!',
                char_size: (9, 9),
                leading_offset: 2,
                mask_color: Color::from_u32(0xFF_00_FF),
            },
        )
        .unwrap();
    gui.register(
        Label::new(font)
            .with_pos(10, 60)
            .with_text("This is a label with a custom font\nand fancy colors."),
    );

    let label_ref = gui.register(
        Label::new(default_font)
            .with_pos(10, 100)
            .with_text("This label will be updated."),
    );
    {
        let label = gui.get_mut::<Label>(label_ref).unwrap();

        label.set_text("This label has been updated.");
    }

    while window.is_open() && !window.is_key_down(Key::Escape) {
        gui.draw_to_buffer(&mut buffer);

        gui.draw_label(
            &mut buffer,
            font,
            &String::from_str("This label is not registered and\nis drawn directly every frame.")
                .unwrap(),
            (10, 120),
        );

        window.update_with_buffer(&buffer, WIDTH, HEIGHT).unwrap();
    }
}