bastd.keyboard.englishkeyboard

 1# Released under the MIT License. See LICENSE for details.
 2#
 3"""Defines a default keyboards."""
 4
 5# ba_meta require api 7
 6# (see https://ballistica.net/wiki/meta-tag-system)
 7
 8from __future__ import annotations
 9
10from typing import TYPE_CHECKING
11
12import ba
13
14if TYPE_CHECKING:
15    from typing import Iterable
16
17
18def split(chars: Iterable[str], maxlen: int) -> list[list[str]]:
19    """Returns char groups with a fixed number of elements"""
20    result = []
21    shatter: list[str] = []
22    for i in chars:
23        if len(shatter) < maxlen:
24            shatter.append(i)
25        else:
26            result.append(shatter)
27            shatter = [i]
28    if shatter:
29        while len(shatter) < maxlen:
30            shatter.append('')
31        result.append(shatter)
32    return result
33
34
35def generate_emojis(maxlen: int) -> list[list[str]]:
36    """Generates a lot of UTF8 emojis prepared for ba.Keyboard pages"""
37    all_emojis = split([chr(i) for i in range(0x1F601, 0x1F650)], maxlen)
38    all_emojis += split([chr(i) for i in range(0x2702, 0x27B1)], maxlen)
39    all_emojis += split([chr(i) for i in range(0x1F680, 0x1F6C1)], maxlen)
40    return all_emojis
41
42
43# ba_meta export keyboard
44class EnglishKeyboard(ba.Keyboard):
45    """Default English keyboard."""
46    name = 'English'
47    chars = [('q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p'),
48             ('a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l'),
49             ('z', 'x', 'c', 'v', 'b', 'n', 'm')]
50    nums = ('1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '/', ':',
51            ';', '(', ')', '$', '&', '@', '"', '.', ',', '?', '!', '\'', '_')
52    pages: dict[str, tuple[str, ...]] = {
53        f'emoji{i}': tuple(page)
54        for i, page in enumerate(generate_emojis(len(nums)))
55    }