Unexpected-Keyboard/srcs/juloo.keyboard2/KeyModifier.java
Jules Aguillon 0f62b3044c Option to switch to the previous input method
A new option changes the "change_method" into the new
"change_method_prev". It switch to the previously used input method.

A long press on "change_method_prev" sends "change_method".

A new section is added in the settings and existing options are moved.
2023-02-12 23:20:11 +01:00

661 lines
20 KiB
Java
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

package juloo.keyboard2;
import android.view.KeyCharacterMap;
import android.view.KeyEvent;
import java.util.HashMap;
class KeyModifier
{
/** Cache key is KeyValue's name */
private static HashMap<KeyValue, HashMap<Pointers.Modifiers, KeyValue>> _cache =
new HashMap<KeyValue, HashMap<Pointers.Modifiers, KeyValue>>();
/** Modify a key according to modifiers. */
public static KeyValue modify(KeyValue k, Pointers.Modifiers mods)
{
if (k == null)
return null;
int n_mods = mods.size();
HashMap<Pointers.Modifiers, KeyValue> ks = cacheEntry(k);
KeyValue r = ks.get(mods);
if (r == null)
{
r = k;
/* Order: Fn, Shift, accents */
for (int i = 0; i < n_mods; i++)
r = modify(r, mods.get(i));
ks.put(mods, r);
}
/* Keys with an empty string are placeholder keys. */
return (r.getString().length() == 0) ? null : r;
}
public static KeyValue modify(KeyValue k, KeyValue.Modifier mod)
{
switch (mod)
{
case CTRL:
case ALT:
case META: return turn_into_keyevent(k);
case FN: return apply_fn(k);
case SHIFT: return apply_shift(k);
case GRAVE: return apply_dead_char(k, '\u02CB');
case AIGU: return apply_dead_char(k, '\u00B4');
case CIRCONFLEXE: return apply_dead_char(k, '\u02C6');
case TILDE: return apply_dead_char(k, '\u02DC');
case CEDILLE: return apply_dead_char(k, '\u00B8');
case TREMA: return apply_dead_char(k, '\u00A8');
case CARON: return apply_dead_char(k, '\u02C7');
case RING: return apply_dead_char(k, '\u02DA');
case MACRON: return apply_dead_char(k, '\u00AF');
case OGONEK: return apply_dead_char(k, '\u02DB');
case DOT_ABOVE: return apply_dead_char(k, '\u02D9');
case BREVE: return apply_dead_char(k, '\u02D8');
case DOUBLE_AIGU: return apply_map_char(k, map_char_double_aigu);
case ORDINAL: return apply_map_char(k, map_char_ordinal);
case SUPERSCRIPT: return apply_map_char(k, map_char_superscript);
case SUBSCRIPT: return apply_map_char(k, map_char_subscript);
case ARROWS: return apply_map_char(k, map_char_arrows);
case BOX: return apply_map_char(k, map_char_box);
case SLASH: return apply_map_char(k, map_char_slash);
case BAR: return apply_map_char(k, map_char_bar);
case ARROW_RIGHT: return apply_combining(k, "\u20D7");
case DOT_BELOW: return apply_map_char(k, map_char_dot_below);
case HORN: return apply_map_char(k, map_char_horn);
case HOOK_ABOVE: return apply_map_char(k, map_char_hook_above);
default: return k;
}
}
/** Modify a key after a long press. */
public static KeyValue modify_long_press(KeyValue k)
{
switch (k.getKind())
{
case Event:
switch (k.getEvent())
{
case CHANGE_METHOD_PREV:
return KeyValue.getKeyByName("change_method");
}
break;
}
return k;
}
private static KeyValue apply_map_char(KeyValue k, Map_char map)
{
switch (k.getKind())
{
case Char:
char kc = k.getChar();
char c = map.apply(kc);
return (kc == c) ? k : k.withChar(c);
default: return k;
}
}
private static KeyValue apply_dead_char(KeyValue k, char dead_char)
{
switch (k.getKind())
{
case Char:
char kc = k.getChar();
char c = (char)KeyCharacterMap.getDeadChar(dead_char, kc);
return (c == 0 || kc == c) ? k : k.withChar(c);
default: return k;
}
}
private static KeyValue apply_combining(KeyValue k, String combining)
{
switch (k.getKind())
{
case Char:
return k.withString(String.valueOf(k.getChar()) + combining);
default: return k;
}
}
private static KeyValue apply_shift(KeyValue k)
{
switch (k.getKind())
{
case Char:
char kc = k.getChar();
char c = map_char_shift(kc);
if (kc == c)
c = Character.toUpperCase(kc);
return (kc == c) ? k : k.withChar(c);
case String:
return k.withString(k.getString().toUpperCase());
default: return k;
}
}
private static KeyValue apply_fn(KeyValue k)
{
String name = null;
switch (k.getKind())
{
case Char: name = apply_fn_char(k.getChar()); break;
case Keyevent: name = apply_fn_keyevent(k.getKeyevent()); break;
case Event: name = apply_fn_event(k.getEvent()); break;
case Placeholder: name = apply_fn_placeholder(k.getPlaceholder()); break;
}
return (name == null) ? k : KeyValue.getKeyByName(name);
}
private static String apply_fn_keyevent(int code)
{
switch (code)
{
case KeyEvent.KEYCODE_DPAD_UP: return "page_up";
case KeyEvent.KEYCODE_DPAD_DOWN: return "page_down";
case KeyEvent.KEYCODE_DPAD_LEFT: return "home";
case KeyEvent.KEYCODE_DPAD_RIGHT: return "end";
case KeyEvent.KEYCODE_ESCAPE: return "insert";
case KeyEvent.KEYCODE_TAB: return "\\t";
default: return null;
}
}
private static String apply_fn_event(KeyValue.Event ev)
{
switch (ev)
{
case SWITCH_NUMERIC: return "switch_greekmath";
default: return null;
}
}
private static String apply_fn_placeholder(KeyValue.Placeholder p)
{
switch (p)
{
case F11: return "f11";
case F12: return "f12";
case SHINDOT: return "shindot";
case SINDOT: return "sindot";
case OLE: return "ole";
case METEG: return "meteg";
default: return null;
}
}
/** Return the name of modified key, or [null]. */
private static String apply_fn_char(char c)
{
switch (c)
{
case '1': return "f1";
case '2': return "f2";
case '3': return "f3";
case '4': return "f4";
case '5': return "f5";
case '6': return "f6";
case '7': return "f7";
case '8': return "f8";
case '9': return "f9";
case '0': return "f10";
case '<': return "«";
case '>': return "»";
case '{': return "";
case '}': return "";
case '[': return "";
case ']': return "";
case '(': return "";
case ')': return "";
case '\'': return "";
case '"': return "";
case '-': return "";
case '_': return "";
case '^': return "¬";
case '%': return "";
case '=': return "";
case 'u': return "µ";
case 'a': return "æ";
case 'o': return "œ";
case '*': return "°";
case '.': return "";
case ',': return "·";
case '!': return "¡";
case '?': return "¿";
case '|': return "¦";
// arrows
case '↖': return "";
case '↑': return "";
case '↗': return "";
case '←': return "";
case '→': return "";
case '↙': return "";
case '↓': return "";
case '↘': return "";
case '↔': return "";
case '↕': return "";
// Currency symbols
case 'e': return "";
case 'l': return "£";
case 'r': return "";
case 'y': return "¥";
case 'c': return "¢";
case 'p': return "";
case '€': case '£': return "removed"; // Avoid showing these twice
// alternating greek letters
case 'π': return "ϖ";
case 'θ': return "ϑ";
case 'Θ': return "ϴ";
case 'ε': return "ϵ";
case 'β': return "ϐ";
case 'ρ': return "ϱ";
case 'σ': return "ς";
case 'γ': return "ɣ";
case 'φ': return "ϕ";
case 'υ': return "ϒ";
case 'κ': return "ϰ";
// alternating math characters
case '': return "";
case '∩': return "";
case '∃': return "";
case '∈': return "";
case '∫': return "";
case 'Π': return "";
case 'Σ': return "";
case '': return "";
case '∧': return "";
case '⊷': return "";
case '⊂': return "";
case '⊃': return "";
case '±': return "";
// hebrew niqqud
case 'ק': return "qamats"; // kamatz
case 'ר': return "hataf_qamats"; // reduced kamatz
case 'ו': return "holam";
case 'ם': return "rafe";
case 'פ': return "patah"; // patach
case 'ש': return "sheva";
case 'ד': return "dagesh"; // or mapiq
case 'ח': return "hiriq";
case 'ף': return "hataf_patah"; // reduced patach
case 'ז': return "qubuts"; // kubuts
case 'ס': return "segol";
case 'ב': return "hataf_segol"; // reduced segol
case 'צ': return "tsere";
// other
case ' ': return "nbsp";
default: return null;
}
}
private static KeyValue turn_into_keyevent(KeyValue k)
{
if (k.getKind() != KeyValue.Kind.Char)
return k;
int e;
switch (k.getChar())
{
case 'a': e = KeyEvent.KEYCODE_A; break;
case 'b': e = KeyEvent.KEYCODE_B; break;
case 'c': e = KeyEvent.KEYCODE_C; break;
case 'd': e = KeyEvent.KEYCODE_D; break;
case 'e': e = KeyEvent.KEYCODE_E; break;
case 'f': e = KeyEvent.KEYCODE_F; break;
case 'g': e = KeyEvent.KEYCODE_G; break;
case 'h': e = KeyEvent.KEYCODE_H; break;
case 'i': e = KeyEvent.KEYCODE_I; break;
case 'j': e = KeyEvent.KEYCODE_J; break;
case 'k': e = KeyEvent.KEYCODE_K; break;
case 'l': e = KeyEvent.KEYCODE_L; break;
case 'm': e = KeyEvent.KEYCODE_M; break;
case 'n': e = KeyEvent.KEYCODE_N; break;
case 'o': e = KeyEvent.KEYCODE_O; break;
case 'p': e = KeyEvent.KEYCODE_P; break;
case 'q': e = KeyEvent.KEYCODE_Q; break;
case 'r': e = KeyEvent.KEYCODE_R; break;
case 's': e = KeyEvent.KEYCODE_S; break;
case 't': e = KeyEvent.KEYCODE_T; break;
case 'u': e = KeyEvent.KEYCODE_U; break;
case 'v': e = KeyEvent.KEYCODE_V; break;
case 'w': e = KeyEvent.KEYCODE_W; break;
case 'x': e = KeyEvent.KEYCODE_X; break;
case 'y': e = KeyEvent.KEYCODE_Y; break;
case 'z': e = KeyEvent.KEYCODE_Z; break;
case '0': e = KeyEvent.KEYCODE_0; break;
case '1': e = KeyEvent.KEYCODE_1; break;
case '2': e = KeyEvent.KEYCODE_2; break;
case '3': e = KeyEvent.KEYCODE_3; break;
case '4': e = KeyEvent.KEYCODE_4; break;
case '5': e = KeyEvent.KEYCODE_5; break;
case '6': e = KeyEvent.KEYCODE_6; break;
case '7': e = KeyEvent.KEYCODE_7; break;
case '8': e = KeyEvent.KEYCODE_8; break;
case '9': e = KeyEvent.KEYCODE_9; break;
case '`': e = KeyEvent.KEYCODE_GRAVE; break;
case '-': e = KeyEvent.KEYCODE_MINUS; break;
case '=': e = KeyEvent.KEYCODE_EQUALS; break;
case '[': e = KeyEvent.KEYCODE_LEFT_BRACKET; break;
case ']': e = KeyEvent.KEYCODE_RIGHT_BRACKET; break;
case '\\': e = KeyEvent.KEYCODE_BACKSLASH; break;
case ';': e = KeyEvent.KEYCODE_SEMICOLON; break;
case '\'': e = KeyEvent.KEYCODE_APOSTROPHE; break;
case '/': e = KeyEvent.KEYCODE_SLASH; break;
case '@': e = KeyEvent.KEYCODE_AT; break;
case '+': e = KeyEvent.KEYCODE_PLUS; break;
case ',': e = KeyEvent.KEYCODE_COMMA; break;
case '.': e = KeyEvent.KEYCODE_PERIOD; break;
case '*': e = KeyEvent.KEYCODE_STAR; break;
case '#': e = KeyEvent.KEYCODE_POUND; break;
case '(': e = KeyEvent.KEYCODE_NUMPAD_LEFT_PAREN; break;
case ')': e = KeyEvent.KEYCODE_NUMPAD_RIGHT_PAREN; break;
case ' ': e = KeyEvent.KEYCODE_SPACE; break;
default: return k;
}
return k.withKeyevent(e);
}
/* Lookup the cache entry for a key. Create it needed. */
private static HashMap<Pointers.Modifiers, KeyValue> cacheEntry(KeyValue k)
{
HashMap<Pointers.Modifiers, KeyValue> ks = _cache.get(k);
if (ks == null)
{
ks = new HashMap<Pointers.Modifiers, KeyValue>();
_cache.put(k, ks);
}
return ks;
}
private static abstract class Map_char
{
public abstract char apply(char c);
}
private static char map_char_shift(char c)
{
switch (c)
{
case '↙': return '⇙';
case '↓': return '⇓';
case '↘': return '⇘';
case '←': return '⇐';
case '→': return '⇒';
case '↖': return '⇖';
case '↑': return '⇑';
case '↗': return '⇗';
case '└': return '╚';
case '┴': return '╩';
case '┘': return '╝';
case '├': return '╠';
case '┼': return '╬';
case '┤': return '╣';
case '┌': return '╔';
case '┬': return '╦';
case '┐': return '╗';
case '─': return '═';
case '│': return '║';
case 'ß': return 'ẞ';
/* In Turkish, upper case of 'iı' is 'İI' but Java's toUpperCase will
return 'II'. To make 'İ' accessible, make it the shift of 'ı'. This
has the inconvenient of swapping i and ı on the keyboard. */
case 'ı': return 'İ';
case '₹': return '₨';
default: return c;
}
}
private static final Map_char map_char_double_aigu =
new Map_char() {
public char apply(char c)
{
switch (c)
{
// Composite characters: a̋ e̋ i̋ m̋ ӳ
case 'o': return 'ő';
case 'u': return 'ű';
case ' ': return '˝';
default: return c;
}
}
};
private static final Map_char map_char_ordinal =
new Map_char() {
public char apply(char c)
{
switch (c)
{
case 'a': return 'ª';
case 'o': return 'º';
case '1': return 'ª';
case '2': return 'º';
case '3': return 'ⁿ';
case '4': return 'ᵈ';
case '5': return 'ᵉ';
case '6': return 'ʳ';
case '7': return 'ˢ';
case '8': return 'ᵗ';
case '9': return 'ʰ';
case '*': return '°';
default: return c;
}
}
};
private static final Map_char map_char_superscript =
new Map_char() {
public char apply(char c)
{
switch (c)
{
case '1': return '¹';
case '2': return '²';
case '3': return '³';
case '4': return '⁴';
case '5': return '⁵';
case '6': return '⁶';
case '7': return '⁷';
case '8': return '⁸';
case '9': return '⁹';
case '0': return '⁰';
case 'i': return 'ⁱ';
case '+': return '⁺';
case '-': return '⁻';
case '=': return '⁼';
case '(': return '⁽';
case ')': return '⁾';
case 'n': return 'ⁿ';
default: return c;
}
}
};
private static final Map_char map_char_subscript =
new Map_char() {
public char apply(char c)
{
switch (c)
{
case '1': return '₁';
case '2': return '₂';
case '3': return '₃';
case '4': return '₄';
case '5': return '₅';
case '6': return '₆';
case '7': return '₇';
case '8': return '₈';
case '9': return '₉';
case '0': return '₀';
case '+': return '₊';
case '-': return '₋';
case '=': return '₌';
case '(': return '₍';
case ')': return '₎';
case 'e': return 'ₑ';
case 'a': return 'ₐ';
case 'x': return 'ₓ';
case 'o': return 'ₒ';
default: return c;
}
}
};
private static final Map_char map_char_arrows =
new Map_char() {
public char apply(char c)
{
switch (c)
{
case '1': return '↙';
case '2': return '↓';
case '3': return '↘';
case '4': return '←';
case '6': return '→';
case '7': return '↖';
case '8': return '↑';
case '9': return '↗';
default: return c;
}
}
};
private static final Map_char map_char_box =
new Map_char() {
public char apply(char c)
{
switch (c)
{
case '1': return '└';
case '2': return '┴';
case '3': return '┘';
case '4': return '├';
case '5': return '┼';
case '6': return '┤';
case '7': return '┌';
case '8': return '┬';
case '9': return '┐';
case '0': return '─';
case '.': return '│';
default: return c;
}
}
};
private static final Map_char map_char_slash =
new Map_char() {
public char apply(char c)
{
switch (c)
{
case 'a': return 'ⱥ';
case 'b': return '␢';
case 'c': return 'ȼ';
case 'e': return 'ɇ';
case 'g': return 'ꞡ';
case 'k': return 'ꝃ';
case 'l': return 'ł';
case 'n': return 'ꞥ';
case 'o': return 'ø';
case 'r': return 'ꞧ';
case 's': return 'ꞩ';
case 't': return 'ⱦ';
default: return c;
}
}
};
private static final Map_char map_char_bar =
new Map_char() {
public char apply(char c)
{
switch (c)
{
case 'b': return 'ƀ';
case 'c': return 'ꞓ';
case 'd': return 'đ';
case 'g': return 'ǥ';
case 'i': return 'ɨ';
case 'j': return 'ɉ';
case 'k': return 'ꝁ';
case 'l': return 'ƚ';
case 'o': return 'ɵ';
case 'p': return 'ᵽ';
case 'q': return 'ꝗ';
case 'r': return 'ɍ';
case 't': return 'ŧ';
case 'u': return 'ʉ';
case 'y': return 'ɏ';
case 'z': return 'ƶ';
default: return c;
}
}
};
private static final Map_char map_char_dot_below =
new Map_char() {
public char apply(char c)
{
switch (c)
{
case 'a': return 'ạ';
case 'ă': return 'ặ';
case 'â': return 'ậ';
case 'e': return 'ẹ';
case 'ê': return 'ệ';
case 'i': return 'ị';
case 'o': return 'ọ';
case 'ô': return 'ộ';
case 'ơ': return 'ợ';
case 'u': return 'ụ';
case 'ư': return 'ự';
case 'y': return 'ỵ';
default: return c;
}
}
};
private static final Map_char map_char_horn =
new Map_char() {
public char apply(char c)
{
switch (c)
{
case 'o': return 'ơ';
case 'ó': return 'ớ';
case 'ò': return 'ờ';
case 'ỏ': return 'ở';
case 'õ': return 'ỡ';
case 'ọ': return 'ợ';
case 'u': return 'ư';
case 'ú': return 'ứ';
case 'ù': return 'ừ';
case 'ủ': return 'ử';
case 'ũ': return 'ữ';
case 'ụ': return 'ự';
default: return c;
}
}
};
private static final Map_char map_char_hook_above =
new Map_char() {
public char apply(char c)
{
switch (c)
{
case 'a': return 'ả';
case 'ă': return 'ẳ';
case 'â': return 'ẩ';
case 'e': return 'ẻ';
case 'ê': return 'ể';
case 'i': return 'ỉ';
case 'o': return 'ỏ';
case 'ô': return 'ổ';
case 'ơ': return 'ở';
case 'u': return 'ủ';
case 'ư': return 'ử';
case 'y': return 'ỷ';
default: return c;
}
}
};
}