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#![deny(missing_docs)]
extern crate winit;
use winit::Window;
pub use winit::VirtualKeyCode as Key;
pub use winit::MouseButton;
use winit::MouseScrollDelta;
use winit::KeyboardInput;
use winit::EventsLoop;
use winit::WindowEvent::{MouseInput, MouseWheel, ReceivedCharacter, CursorMoved};
use winit::WindowEvent::KeyboardInput as WKeyboardInput;
use winit::DeviceEvent::MouseMotion;
use winit::Event::{WindowEvent, DeviceEvent};
use winit::ElementState::{Pressed, Released};
use winit::CursorState::{Normal, Hide};
pub struct Input {
pub mouse_pos: (f32, f32),
pub mouse_delta: (f32, f32),
pub mouse_wheel_delta: (f32, f32),
pub keys_down: Vec<Key>,
pub keys_pressed: Vec<Key>,
pub keys_released: Vec<Key>,
pub characters_down: Vec<char>,
pub mouse_btns_down: Vec<MouseButton>,
pub mouse_btns_pressed: Vec<MouseButton>,
pub mouse_btns_released: Vec<MouseButton>,
pub hide_mouse: bool,
cursor_grabbed: bool,
events_loop: EventsLoop,
}
impl Input {
pub fn new() -> Input {
let events_loop = EventsLoop::new();
Input {
mouse_pos: (0f32, 0f32),
mouse_delta: (0f32, 0f32),
mouse_wheel_delta: (0f32, 0f32),
keys_down: Vec::new(),
keys_pressed: Vec::new(),
keys_released: Vec::new(),
characters_down: Vec::new(),
mouse_btns_down: Vec::new(),
mouse_btns_pressed: Vec::new(),
mouse_btns_released: Vec::new(),
hide_mouse: true,
cursor_grabbed: false,
events_loop: events_loop,
}
}
pub fn from_existing(events_loop: EventsLoop) -> Input {
Input {
mouse_pos: (0f32, 0f32),
mouse_delta: (0f32, 0f32),
mouse_wheel_delta: (0f32, 0f32),
keys_down: Vec::new(),
keys_pressed: Vec::new(),
keys_released: Vec::new(),
characters_down: Vec::new(),
mouse_btns_down: Vec::new(),
mouse_btns_pressed: Vec::new(),
mouse_btns_released: Vec::new(),
hide_mouse: true,
cursor_grabbed: false,
events_loop: events_loop,
}
}
pub fn update_inputs(&mut self, window: &Window) {
let (width, height) = window.get_outer_size().unwrap();
{
self.mouse_delta = (0f32, 0f32);
self.mouse_wheel_delta = (0f32, 0f32);
self.keys_pressed.clear();
self.keys_released.clear();
self.mouse_btns_pressed.clear();
self.mouse_btns_released.clear();
self.characters_down.clear();
}
let keys_down = &mut self.keys_down;
let keys_pressed = &mut self.keys_pressed;
let keys_released = &mut self.keys_released;
let mouse_delta = &mut self.mouse_delta;
let mouse_pos = &mut self.mouse_pos;
let mouse_btns_down = &mut self.mouse_btns_down;
let mouse_btns_pressed = &mut self.mouse_btns_pressed;
let mouse_btns_released = &mut self.mouse_btns_released;
let mouse_wheel_delta = &mut self.mouse_wheel_delta;
let characters_down = &mut self.characters_down;
self.events_loop.poll_events(|event| match event {
WindowEvent { event, .. } => {
match event {
WKeyboardInput {
input: KeyboardInput {
state: Pressed,
virtual_keycode: vkey,
..
},
..
} => {
if let Some(key) = vkey {
keys_down.push(key);
keys_pressed.push(key);
}
}
WKeyboardInput {
input: KeyboardInput {
state: Released,
virtual_keycode: vkey,
..
},
..
} => {
if let Some(key) = vkey {
keys_down.retain(|&k| k != key);
keys_released.push(key);
}
}
CursorMoved { position: (x, y), .. } => {
(*mouse_pos) = (x as f32, y as f32);
}
MouseInput {
state: Pressed,
button: btn,
..
} => {
mouse_btns_down.push(btn);
mouse_btns_pressed.push(btn);
}
MouseInput {
state: Released,
button: btn,
..
} => {
mouse_btns_down.retain(|&mb| mb != btn);
mouse_btns_released.push(btn);
}
MouseWheel { delta, .. } => {
(*mouse_wheel_delta) = match delta {
MouseScrollDelta::LineDelta(x, y) => (x, y),
MouseScrollDelta::PixelDelta(x, y) => (x, y),
};
}
ReceivedCharacter(c) => characters_down.push(c),
_ => (),
}
}
DeviceEvent { event, .. } => {
match event {
MouseMotion { delta } => {
(*mouse_delta) = (delta.0 as f32, delta.1 as f32);
}
_ => (),
}
}
_ => (),
});
if self.hide_mouse {
if self.cursor_grabbed {
window.set_cursor_state(Hide).ok();
self.cursor_grabbed = false;
}
let _ = window.set_cursor_position((width / 2) as i32, (height / 2) as i32);
} else {
if !self.cursor_grabbed {
window.set_cursor_state(Normal).ok();
self.cursor_grabbed = true;
}
}
}
}