1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
use crate::constants::*;
use crate::events::*;
use crate::input::events::InputEvent;
use crate::mapping::actions::*;
use crate::mapping::thresholds::*;
use serde::{Deserialize, Serialize};
use std::collections::HashMap;
pub type ModifierMapInput = Vec<(ModifierInput, Action)>;
#[derive(Copy, Clone, Debug, Eq, PartialEq, Hash, Serialize, Deserialize)]
pub enum ModifierInput {
Key(KeyCode),
Axis(ThresholdedAxis),
}
pub struct ModifierMap {
modifier_mapping: HashMap<ModifierInput, Action>,
axis_thresholds: AllAxisThresholds,
axis_states: HashMap<AbsAxisCode, Option<ThresholdType>>,
}
impl ModifierMap {
fn handle_key(&mut self, ev: &KeyEvent) -> Option<(Action, Option<Action>)> {
self.modifier_mapping
.get(&ModifierInput::Key(ev.key()))
.cloned()
.map(|act| (act, None))
}
fn handle_axis(&mut self, ev: &AbsAxisEvent) -> Option<(Action, Option<Action>)> {
let prev_state = self.axis_states.get(&ev.axis()).copied().unwrap_or(None);
match self.axis_thresholds.get_passing(ev) {
Some(thresholded_axis) => match prev_state {
Some(prev_threshold) => {
if prev_threshold == thresholded_axis.threshold() {
None
} else {
let prev_act = self
.modifier_mapping
.get(&ModifierInput::Axis((ev.axis(), prev_threshold).into()))
.cloned();
let new_act = self.modifier_mapping.get(&thresholded_axis.into()).cloned();
self.axis_states
.insert(ev.axis(), Some(thresholded_axis.threshold()));
match new_act {
Some(new_act) => Some((new_act, prev_act)),
None => prev_act.map(|act| (act, None)),
}
}
}
None => {
self.axis_states
.insert(ev.axis(), Some(thresholded_axis.threshold()));
self.modifier_mapping
.get(&thresholded_axis.into())
.cloned()
.map(|act| (act, None))
}
},
None => match prev_state {
Some(threshold_type) => {
self.axis_states.insert(ev.axis(), None);
self.modifier_mapping
.get(&ModifierInput::Axis((ev.axis(), threshold_type).into()))
.cloned()
.map(|act| (act, None))
}
None => None,
},
}
}
pub fn handle_event(&mut self, ev: &InputEvent) -> Option<(Action, Option<Action>)> {
match ev {
InputEvent::KeyEvent(kev) => self.handle_key(kev),
InputEvent::AbsAxisEvent(aev) => self.handle_axis(aev),
InputEvent::RelAxisEvent(_) => None,
}
}
pub fn peek_actions_mut(&mut self) -> impl Iterator<Item = &mut Action> {
self.modifier_mapping.values_mut()
}
pub fn init(modifier_map: ModifierMapInput, all_a_t: AllAxisThresholds) -> Self {
let mut modifier_mapping =
HashMap::<ModifierInput, Action>::with_capacity(modifier_map.len());
let mut axis_states = HashMap::<AbsAxisCode, Option<ThresholdType>>::new();
for (input, output) in modifier_map {
modifier_mapping.insert(input, output);
if let ModifierInput::Axis(ta) = input {
axis_states.insert(ta.code(), None);
}
}
Self {
modifier_mapping: modifier_mapping,
axis_thresholds: all_a_t,
axis_states: axis_states,
}
}
}
impl From<KeyCode> for ModifierInput {
fn from(key: KeyCode) -> Self {
Self::Key(key)
}
}
impl From<ThresholdedAxis> for ModifierInput {
fn from(t_a: ThresholdedAxis) -> Self {
Self::Axis(t_a)
}
}
impl From<(AbsAxisCode, ThresholdType)> for ModifierInput {
fn from(data: (AbsAxisCode, ThresholdType)) -> Self {
Self::Axis(data.into())
}
}