notan_input/
keyboard.rs

1use hashbrown::{HashMap, HashSet};
2use notan_core::events::Event;
3
4pub use notan_core::keyboard::KeyCode;
5
6/// Represent the keyboard data
7#[derive(Default)]
8#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
9pub struct Keyboard {
10    /// pressed keys
11    pub pressed: HashSet<KeyCode>,
12    /// down keys
13    pub down: HashMap<KeyCode, f32>,
14    /// released keys
15    pub released: HashSet<KeyCode>,
16    /// last key release
17    pub last_key_released: Option<KeyCode>,
18}
19
20impl Keyboard {
21    /// returns the last key released
22    pub fn last_key_released(&self) -> Option<KeyCode> {
23        self.last_key_released
24    }
25
26    /// returns true if the key was released on the last frame
27    pub fn was_released(&self, key: KeyCode) -> bool {
28        self.released.contains(&key)
29    }
30
31    /// returns true if the key is still down
32    pub fn is_down(&self, key: KeyCode) -> bool {
33        self.down.contains_key(&key)
34    }
35
36    /// returns the total time that this key is down
37    pub fn down_delta(&self, key: KeyCode) -> f32 {
38        *self.down.get(&key).unwrap_or(&0.0)
39    }
40
41    /// returns true if the key was pressed on the last frame
42    pub fn was_pressed(&self, key: KeyCode) -> bool {
43        self.pressed.contains(&key)
44    }
45
46    #[inline]
47    /// returns true if any control key is down
48    pub fn ctrl(&self) -> bool {
49        self.is_down(KeyCode::ControlRight) || self.is_down(KeyCode::ControlLeft)
50    }
51
52    #[inline]
53    /// returns true if any alt key is down
54    pub fn alt(&self) -> bool {
55        self.is_down(KeyCode::AltRight) || self.is_down(KeyCode::AltLeft)
56    }
57
58    #[inline]
59    /// returns true if any shift key is down
60    pub fn shift(&self) -> bool {
61        self.is_down(KeyCode::ShiftRight) || self.is_down(KeyCode::ShiftLeft)
62    }
63
64    #[inline]
65    /// returns true if any logo (win or command) key is down
66    pub fn logo(&self) -> bool {
67        self.is_down(KeyCode::SuperRight) || self.is_down(KeyCode::SuperLeft)
68    }
69
70    pub(crate) fn clear(&mut self) {
71        self.pressed.clear();
72        self.released.clear();
73    }
74
75    #[inline]
76    pub(crate) fn process_events(&mut self, evt: &Event, delta: f32) {
77        match evt {
78            Event::KeyUp { key } => {
79                self.down.remove(key);
80                self.pressed.remove(key);
81                self.released.insert(*key);
82                self.last_key_released = Some(*key);
83            }
84
85            Event::KeyDown { key } => {
86                if let Some(t) = self.down.get_mut(key) {
87                    *t += delta;
88                } else {
89                    self.down.insert(*key, 0.0);
90                    self.pressed.insert(*key);
91                }
92            }
93            _ => {}
94        }
95    }
96}
notan_input/keyboard.rs

notan_input/
keyboard.rs
