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pub use self::keys::Keys;
pub use self::mouse::Mouse;
pub use self::time::Time;
pub use self::window::Window;
pub mod window {
use geom;
use window;
use math::{BaseFloat, Vector2};
pub type DefaultScalar = geom::DefaultScalar;
#[derive(Copy, Clone, Debug, PartialEq)]
pub struct Window<S = DefaultScalar> {
pub id: Option<window::Id>,
pub width: S,
pub height: S,
pub hidpi_factor: S,
}
impl<S> Window<S>
where
S: BaseFloat,
{
pub fn new() -> Self {
Window {
id: None,
width: S::zero(),
height: S::zero(),
hidpi_factor: S::one(),
}
}
pub fn x_range(&self) -> geom::Range<S> {
let half_w = self.width / (S::one() + S::one());
geom::Range { start: -half_w, end: half_w }
}
pub fn y_range(&self) -> geom::Range<S> {
let half_h = self.height / (S::one() + S::one());
geom::Range { start: -half_h, end: half_h }
}
pub fn rect(&self) -> geom::Rect<S> {
let x = self.x_range();
let y = self.y_range();
geom::Rect { x, y }
}
pub fn id(&self) -> window::Id {
self.id.unwrap()
}
pub fn size(&self) -> Vector2<S> {
Vector2 { x: self.width, y: self.height }
}
}
}
pub mod keys {
use event::{Key, ModifiersState};
use std::collections::HashSet;
use std::ops::Deref;
#[derive(Clone, Debug, Default)]
pub struct Keys {
pub mods: ModifiersState,
pub down: Down,
}
#[derive(Clone, Debug, Default)]
pub struct Down {
pub(crate) keys: HashSet<Key>,
}
impl Deref for Down {
type Target = HashSet<Key>;
fn deref(&self) -> &Self::Target {
&self.keys
}
}
}
pub mod mouse {
use geom;
use math::{BaseFloat, Point2};
use std;
use window;
pub type DefaultScalar = geom::DefaultScalar;
#[doc(inline)]
pub use event::MouseButton as Button;
pub const NUM_BUTTONS: usize = 9;
#[derive(Copy, Clone, Debug, PartialEq)]
pub struct Mouse<S = DefaultScalar> {
pub window: Option<window::Id>,
pub x: S,
pub y: S,
pub buttons: ButtonMap,
}
#[derive(Copy, Clone, Debug, PartialEq)]
pub enum ButtonPosition<S = DefaultScalar> {
Up,
Down(Point2<S>),
}
#[derive(Copy, Clone, Debug, PartialEq)]
pub struct ButtonMap<S = DefaultScalar> {
buttons: [ButtonPosition<S>; NUM_BUTTONS],
}
#[derive(Clone)]
pub struct PressedButtons<'a, S: 'a = DefaultScalar> {
buttons: std::iter::Enumerate<std::slice::Iter<'a, ButtonPosition<S>>>,
}
impl<S> Mouse<S>
where
S: BaseFloat,
{
pub fn new() -> Self {
Mouse {
window: None,
buttons: ButtonMap::new(),
x: S::zero(),
y: S::zero(),
}
}
pub fn position(&self) -> Point2<S> {
Point2 { x: self.x, y: self.y }
}
}
impl<S> ButtonPosition<S>
where
S: BaseFloat,
{
pub fn relative_to(self, xy: Point2<S>) -> Self {
match self {
ButtonPosition::Down(pos) => {
let rel_p = pos - xy;
ButtonPosition::Down(Point2 { x: rel_p.x, y: rel_p.y })
}
button_pos => button_pos,
}
}
pub fn is_down(&self) -> bool {
match *self {
ButtonPosition::Down(_) => true,
_ => false,
}
}
pub fn is_up(&self) -> bool {
match *self {
ButtonPosition::Up => true,
_ => false,
}
}
pub fn if_down(&self) -> Option<Point2<S>> {
match *self {
ButtonPosition::Down(xy) => Some(xy),
_ => None,
}
}
}
impl<S> ButtonMap<S>
where
S: BaseFloat,
{
pub fn new() -> Self {
ButtonMap { buttons: [ButtonPosition::Up; NUM_BUTTONS] }
}
pub fn relative_to(self, xy: Point2<S>) -> Self {
self.buttons.iter().enumerate().fold(
ButtonMap::new(),
|mut map,
(idx, button_pos)| {
map.buttons[idx] = button_pos.relative_to(xy);
map
},
)
}
pub fn left(&self) -> &ButtonPosition<S> {
&self[Button::Left]
}
pub fn middle(&self) -> &ButtonPosition<S> {
&self[Button::Middle]
}
pub fn right(&self) -> &ButtonPosition<S> {
&self[Button::Right]
}
pub fn press(&mut self, button: Button, xy: Point2<S>) {
self.buttons[button_to_idx(button)] = ButtonPosition::Down(xy);
}
pub fn release(&mut self, button: Button) {
self.buttons[button_to_idx(button)] = ButtonPosition::Up;
}
pub fn pressed(&self) -> PressedButtons<S> {
PressedButtons { buttons: self.buttons.iter().enumerate() }
}
}
impl<S> std::ops::Index<Button> for ButtonMap<S> {
type Output = ButtonPosition<S>;
fn index(&self, button: Button) -> &Self::Output {
&self.buttons[button_to_idx(button)]
}
}
impl<'a, S> Iterator for PressedButtons<'a, S>
where
S: BaseFloat,
{
type Item = (Button, Point2<S>);
fn next(&mut self) -> Option<Self::Item> {
while let Some((idx, button_pos)) = self.buttons.next() {
if let ButtonPosition::Down(xy) = *button_pos {
return Some((idx_to_button(idx), xy));
}
}
None
}
}
fn idx_to_button(i: usize) -> Button {
match i {
n @ 0...5 => Button::Other(n as u8),
6 => Button::Left,
7 => Button::Right,
8 => Button::Middle,
_ => Button::Other(std::u8::MAX),
}
}
fn button_to_idx(button: Button) -> usize {
match button {
Button::Other(n) => n as usize,
Button::Left => 6,
Button::Right => 7,
Button::Middle => 8,
}
}
}
pub mod time {
use std::{ops, time};
#[derive(Copy, Clone, Debug, Default, Eq, PartialEq, Hash)]
pub struct Time {
pub since_start: Duration,
pub since_prev_update: Duration,
}
#[derive(Copy, Clone, Debug, Default, Eq, PartialEq, Hash, Ord, PartialOrd)]
pub struct Duration {
pub duration: time::Duration,
}
impl From<time::Duration> for Duration {
fn from(duration: time::Duration) -> Self {
Duration { duration }
}
}
impl Into<time::Duration> for Duration {
fn into(self) -> time::Duration {
self.duration
}
}
impl ops::Deref for Duration {
type Target = time::Duration;
fn deref(&self) -> &Self::Target {
&self.duration
}
}
impl ops::DerefMut for Duration {
fn deref_mut(&mut self) -> &mut Self::Target {
&mut self.duration
}
}
impl Duration {
pub fn weeks(&self) -> f64 {
self.days() / 7.0
}
pub fn days(&self) -> f64 {
self.hrs() / 24.0
}
pub fn hrs(&self) -> f64 {
self.mins() / 60.0
}
pub fn mins(&self) -> f64 {
self.secs() / 60.0
}
pub fn secs(&self) -> f64 {
self.as_secs() as f64 + self.subsec_nanos() as f64 * 1e-9
}
pub fn ms(&self) -> f64 {
self.secs() * 1_000.0
}
}
}