/// Minimal example
use pel::{
    input::{KeyboardInput, ModifierKeys, MouseInput},
    Context, Events,
};

struct EventHandler;
impl Events for EventHandler {
    fn init(&mut self, _ctx: &mut Context) {
        println!("Event loop started.");
    }

    fn window_focus(&mut self, _ctx: &mut Context, focus: bool) {
        println!("Window is now {}.", if focus { "focused" } else { "unfocused" });
    }

    fn window_resized(&mut self, _ctx: &mut Context, size: (usize, usize)) {
        println!("Window resized; new size: {:?}.", size);
    }

    fn cursor_focus(&mut self, _ctx: &mut Context, focus: bool) {
        println!("Cursor has {} client area.", if focus { "entered" } else { "left" });
    }

    fn text_input(&mut self, _ctx: &mut Context, codepoint: char) {
        println!("Received text input: char='{}'.", codepoint);
    }

    fn key_input(&mut self, _ctx: &mut Context, input: KeyboardInput) {
        println!("Received raw key input: scancode={:?}.", input);
    }

    fn mouse_moved(&mut self, _ctx: &mut Context, pos: (usize, usize)) {
        println!("Mouse moved; new position: {:?}.", pos);
    }

    fn mouse_click(&mut self, _ctx: &mut Context, click: MouseInput) {
        println!("Mouse button state changed: {:?}.", click);
    }

    fn mouse_scroll(&mut self, _ctx: &mut Context, delta: f32) {
        println!("Mouse scrolled: {}.", delta);
    }

    fn keyboard_modifiers(&mut self, _ctx: &mut Context, modifiers: ModifierKeys) {
        println!("Modifier key state changed: {:?}", modifiers);
    }

    fn exit_requested(&mut self, _ctx: &mut Context) -> bool {
        println!("Window got request to close; accepting.");
        true
    }

    fn exit(&mut self) {
        println!("Event loop shutting down.");
    }
}

fn main() {
    pel::new()
    // it is mandatory to set desired texture size
    .texture_size(1, 1)
    // event loop requires user type that implements pel::Events
    .run(EventHandler);
}