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use crate::config::*;
use rand::prelude::*;
use std::fmt;
#[derive(Copy, Clone)]
pub struct Layout {
keys: [char; NUM_KEYS],
// index in KEY_CHAR -> index in layout
translate_index: [usize; NUM_KEYS],
}
impl Layout {
pub fn get_key(&self, index: usize) -> char {
self.keys[index]
}
pub fn translate_index(&self, i: usize) -> usize {
self.translate_index[i]
}
fn keys_to_layout(layout: [char; NUM_KEYS]) -> Layout {
let mut translate_index: [usize; NUM_KEYS] = [0; NUM_KEYS];
for (i, seek) in KEY_CHARS.iter().enumerate() {
for (j, found) in layout.iter().enumerate() {
if seek == found {
translate_index[i] = j;
}
}
}
return Layout {
keys: layout,
translate_index,
};
}
pub fn from_verbose(inp: &str) -> Option<Layout> {
let mut layout: [char; NUM_KEYS] = ['x'; NUM_KEYS];
let mut k: usize = 0;
for c in inp.chars() {
let valid = (c.is_uppercase() && c.is_alphabetic())
|| c == '.'
|| c == '/'
|| c == ','
|| c == '\'';
if valid {
layout[k] = c;
k += 1;
}
if k > NUM_KEYS {
return None;
}
}
return Some(Layout::keys_to_layout(layout));
}
pub fn new_random_from<R: RngCore>(kbd: &Layout, rng: &mut R) -> Layout {
let mut layout = kbd.keys;
layout.shuffle(rng);
Layout::keys_to_layout(layout)
}
}
impl fmt::Display for Layout {
fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
formatter.write_str(&format_block_output(self.keys.into_iter()))
}
}
#[derive(Copy, Clone)]
pub struct Evaluation {
keypress: [u32; NUM_KEYS],
total_keypress: u32,
sfb: [u32; 8],
}
impl Evaluation {
pub fn new(keypress: [u32; NUM_KEYS], total_keypress: u32, sfb: [u32; 8]) -> Evaluation {
Evaluation {
keypress,
sfb,
total_keypress,
}
}
fn output_eval(&self) -> String {
let mut result = String::new();
let tot = self.total_keypress as f32;
result += &format!(
"Total keypresses: {}\nPercent per key:\n",
self.total_keypress
);
result += &format_block_output(self.keypress.into_iter().map(|k| 100.0 * k as f32 / tot));
let mut finger_usages = [0; 8];
for (i, &c) in self.keypress.iter().enumerate() {
finger_usages[KEY_TO_FINGER[i]] += c;
}
result += "finger usage: ";
for (i, &u) in finger_usages.iter().enumerate() {
result += &format!(
"{:>5.2}%{}",
u as f32 / tot * 100.0,
if i < 7 { ", " } else { "" }
);
}
result += "\nsame finger bigrams: ";
for (i, &u) in self.sfb.iter().enumerate() {
result += &format!(
"{:>6.3}%{}",
u as f32 / tot * 100.0,
if i < 7 { ", " } else { "" }
);
}
result += &format!(
"\ntotal sfb: {:.2}%",
self.sfb.iter().sum::<u32>() as f32 / tot * 100.0
);
return result;
}
// TODO
// pub fn fitness(&self) -> f32 {
// let mut finger_usages = [0; 8];
// let tot = self.total_keypress as f32;
// for (i, &c) in self.keypress.iter().enumerate() {
// finger_usages[KEY_TO_FINGER[i]] += c;
// }
// const MAX_FINGER_USAGES: [f32; 8] = [8.0, 11.0, 21.0, 21.0, 21.0, 21.0, 11.0, 8.0];
// const MAX_FINGER_USAGES: [f32; 8] =
// [100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0];
// if finger_usages
// .iter()
// .enumerate()
// .any(|(i, &c)| c as f32 / tot * 100.00 > MAX_FINGER_USAGES[i])
// {
// std::u32::MAX
// } else {
// self.sfb
// .iter()
// .enumerate()
// .map(|(i, &s)| s as f32 / finger_usages[i] as f32 * 50.0)
// .sum()
// }
// self.sfb.iter().sum::<u32>() as f32
// }
}
impl fmt::Display for Evaluation {
fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
formatter.write_str(&self.output_eval())
}
}
// This is a silly amount of work to genericise the below...
trait ToMyString {
const BLANK_STRING: &'static str;
fn to_my_string(&self) -> String;
}
impl ToMyString for char {
const BLANK_STRING: &'static str = " ";
fn to_my_string(&self) -> String {
self.to_string()
}
}
impl ToMyString for u32 {
const BLANK_STRING: &'static str = " ";
fn to_my_string(&self) -> String {
format!("{:5}", *self)
}
}
impl ToMyString for f32 {
const BLANK_STRING: &'static str = " ";
fn to_my_string(&self) -> String {
format!("{:>4.1}", *self)
}
}
fn format_block_output<T: Iterator<Item = S>, S: ToMyString>(things: T) -> String {
let mut result = String::new();
for (i, t) in things.enumerate() {
result += &t.to_my_string();
if i < NUM_KEYS - 1 {
result.push(' ');
}
if (i + 1) % 10 == 0 {
result.push('\n');
if NUM_KEYS < 30 && i == 19 {
result += S::BLANK_STRING;
result.push(' ')
}
} else if (i < 20 && (i + 1) % 5 == 0) || (i == (NUM_KEYS - 20) / 2 + 19) {
result.push(' ');
}
if i + 1 >= NUM_KEYS {
break;
}
}
return result;
}
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