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#![deny(missing_docs)]
use sylasteven as engine;
use glutin::{EventsLoop, GlContext, GlWindow};
pub use glutin::{ModifiersState as Modifiers, MouseButton, VirtualKeyCode as KeyCode};
pub enum InputEvent {
Resize {
width: u32,
height: u32,
},
Key {
keycode: KeyCode,
modifiers: Modifiers,
down: bool,
},
TextInput(char),
MouseClick {
button: MouseButton,
modifiers: Modifiers,
down: bool,
},
MouseMove {
x: f32,
y: f32,
},
MouseWheel(f32),
File {
dropped: bool,
path: std::path::PathBuf,
},
Quit,
}
pub struct Input {
events_loop: EventsLoop,
}
impl Input {
pub fn new(name: &str, w: u32, h: u32) -> (Self, GlWindow) {
let events_loop = glutin::EventsLoop::new();
let window = glutin::WindowBuilder::new()
.with_title(name)
.with_dimensions(w, h);
let context = glutin::ContextBuilder::new()
.with_vsync(true)
.with_multisampling(4)
.with_srgb(false);
let gl_window = GlWindow::new(window, context, &events_loop).unwrap();
unsafe {
gl_window.make_current().unwrap();
gl::load_with(|symbol| gl_window.get_proc_address(symbol) as *const _);
gl::ClearColor(0.0, 0.0, 0.0, 1.0);
}
(Self { events_loop }, gl_window)
}
}
use crate::engine::{Handler, System};
impl<H: Handler> System<H> for Input
where
H::Event: From<InputEvent>,
{
fn process(&mut self, handler: &mut H) {
let Self { events_loop } = self;
events_loop.poll_events(|event| {
if let Some(event) = match event {
glutin::Event::WindowEvent { event, .. } => match event {
glutin::WindowEvent::CloseRequested => Some(InputEvent::Quit),
glutin::WindowEvent::Resized(width, height) => {
Some(InputEvent::Resize { width, height })
}
glutin::WindowEvent::KeyboardInput {
input:
glutin::KeyboardInput {
state,
virtual_keycode: Some(keycode),
modifiers,
..
},
..
} => {
use glutin::ElementState::*;
let down = match state {
Pressed => true,
Released => false,
};
Some(InputEvent::Key {
keycode,
down,
modifiers,
})
}
glutin::WindowEvent::ReceivedCharacter(char) => {
Some(InputEvent::TextInput(char))
}
glutin::WindowEvent::DroppedFile(path) => Some(InputEvent::File {
dropped: true,
path,
}),
glutin::WindowEvent::HoveredFile(path) => Some(InputEvent::File {
dropped: false,
path,
}),
glutin::WindowEvent::MouseInput {
state,
button,
modifiers,
..
} => {
use glutin::ElementState::*;
let down = match state {
Pressed => true,
Released => false,
};
Some(InputEvent::MouseClick {
button,
down,
modifiers,
})
}
glutin::WindowEvent::MouseWheel { delta, .. } => {
use glutin::MouseScrollDelta::*;
let delta = match delta {
LineDelta(_, delta) => delta,
PixelDelta(_, delta) => delta,
};
Some(InputEvent::MouseWheel(delta))
}
glutin::WindowEvent::CursorMoved { position, .. } => {
Some(InputEvent::MouseMove {
x: position.0 as f32,
y: position.1 as f32,
})
}
_ => None,
},
_ => None,
} {
handler.handle(event.into());
}
});
}
}