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apple2js/js/ui/keyboard.ts
Will Scullin 66f3e04d8e
Preact mass storage (#125) 
The major impetus for rewriting in UI, at least. Still some ironing to do, but much nicer than my attempt to do this using the old UI "framework".
2022-06-05 10:57:04 -07:00

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TypeScript
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import { byte, DeepMemberOf, KnownKeys } from '../types';
import Apple2IO from '../apple2io';
import CPU6502 from '../cpu6502';
import { debug, toHex } from '../util';
// keycode: [plain, cntl, shift]
const keymap = {
// Most of these won't happen
0x00: [0x00, 0x00, 0x00], //
0x01: [0x01, 0x01, 0x01], //
0x02: [0x02, 0x02, 0x02], //
0x03: [0x03, 0x03, 0x03], //
0x04: [0x04, 0x04, 0x04], //
0x05: [0x05, 0x05, 0x05], //
0x06: [0x06, 0x06, 0x06], //
0x07: [0x07, 0x07, 0x07], //
0x08: [0x7F, 0x7F, 0x7F], // BS/DELETE
0x09: [0x09, 0x09, 0x09], // TAB
0x0A: [0x0A, 0x0A, 0x0A], //
0x0B: [0x0B, 0x0B, 0x0B], //
0x0C: [0x0C, 0x0C, 0x0C], //
0x0D: [0x0D, 0x0D, 0x0D], // CR
0x0E: [0x0E, 0x0E, 0x0E], //
0x0F: [0x0F, 0x0F, 0x0F], //
0x10: [0xff, 0xff, 0xff], // SHIFT
0x11: [0xff, 0xff, 0xff], // CTRL
0x12: [0xff, 0xff, 0xff], // ALT/OPTION
0x13: [0x13, 0x13, 0x13], //
0x14: [0x14, 0x14, 0x14], //
0x15: [0x15, 0x15, 0x15], //
0x16: [0x16, 0x16, 0x16], //
0x17: [0x17, 0x17, 0x18], //
0x18: [0x18, 0x18, 0x18], //
0x19: [0x19, 0x19, 0x19], //
0x1A: [0x1A, 0x1A, 0x1A], //
0x1B: [0x1B, 0x1B, 0x1B], // ESC
0x1C: [0x1C, 0x1C, 0x1C], //
0x1D: [0x1D, 0x1D, 0x1D], //
0x1E: [0x1E, 0x1E, 0x1E], //
0x1F: [0x1F, 0x1F, 0x1F], //
// Most of these besides space won't happen
0x20: [0x20, 0x20, 0x20], //
0x21: [0x21, 0x21, 0x21], //
0x22: [0x22, 0x22, 0x22], //
0x23: [0x23, 0x23, 0x23], //
0x24: [0x24, 0x24, 0x24], //
0x25: [0x08, 0x08, 0x08], // <- left
0x26: [0x0B, 0x0B, 0x0B], // ^ up
0x27: [0x15, 0x15, 0x15], // -> right
0x28: [0x0A, 0x0A, 0x0A], // v down
0x29: [0x29, 0x29, 0x29], // )
0x2A: [0x2A, 0x2A, 0x2A], // *
0x2B: [0x2B, 0x2B, 0x2B], // +
0x2C: [0x2C, 0x2C, 0x3C], // , - <
0x2D: [0x2D, 0x2D, 0x5F], // - - _
0x2E: [0x2E, 0x2E, 0x3E], // . - >
0x2F: [0x2F, 0x2F, 0x3F], // / - ?
0x30: [0x30, 0x30, 0x29], // 0 - )
0x31: [0x31, 0x31, 0x21], // 1 - !
0x32: [0x32, 0x00, 0x40], // 2 - @
0x33: [0x33, 0x33, 0x23], // 3 - #
0x34: [0x34, 0x34, 0x24], // 4 - $
0x35: [0x35, 0x35, 0x25], // 5 - %
0x36: [0x36, 0x36, 0x5E], // 6 - ^
0x37: [0x37, 0x37, 0x26], // 7 - &
0x38: [0x38, 0x38, 0x2A], // 8 - *
0x39: [0x39, 0x39, 0x28], // 9 - (
0x3A: [0x3A, 0x3A, 0x3A], // :
0x3B: [0x3B, 0x3B, 0x3A], // ; - :
0x3C: [0x3C, 0x3C, 0x3C], // <
0x3D: [0x3D, 0x3D, 0x2B], // = - +
0x3E: [0x3E, 0x3E, 0x3E], // >
0x3F: [0x3F, 0x3F, 0x3F], // ?
// Alpha and control
0x40: [0x40, 0x00, 0x40], // @
0x41: [0x61, 0x01, 0x41], // A
0x42: [0x62, 0x02, 0x42], // B
0x43: [0x63, 0x03, 0x43], // C - BRK
0x44: [0x64, 0x04, 0x44], // D
0x45: [0x65, 0x05, 0x45], // E
0x46: [0x66, 0x06, 0x46], // F
0x47: [0x67, 0x07, 0x47], // G - BELL
0x48: [0x68, 0x08, 0x48], // H
0x49: [0x69, 0x09, 0x49], // I - TAB
0x4A: [0x6A, 0x0A, 0x4A], // J - NL
0x4B: [0x6B, 0x0B, 0x4B], // K - VT
0x4C: [0x6C, 0x0C, 0x4C], // L
0x4D: [0x6D, 0x0D, 0x4D], // M - CR
0x4E: [0x6E, 0x0E, 0x4E], // N
0x4F: [0x6F, 0x0F, 0x4F], // O
0x50: [0x70, 0x10, 0x50], // P
0x51: [0x71, 0x11, 0x51], // Q
0x52: [0x72, 0x12, 0x52], // R
0x53: [0x73, 0x13, 0x53], // S
0x54: [0x74, 0x14, 0x54], // T
0x55: [0x75, 0x15, 0x55], // U
0x56: [0x76, 0x16, 0x56], // V
0x57: [0x77, 0x17, 0x57], // W
0x58: [0x78, 0x18, 0x58], // X
0x59: [0x79, 0x19, 0x59], // Y
0x5A: [0x7A, 0x1A, 0x5A], // Z
0x5B: [0xFF, 0xFF, 0xFF], // Left window
0x5C: [0xFF, 0xFF, 0xFF], // Right window
0x5D: [0xFF, 0xFF, 0xFF], // Select
0x5E: [0x5E, 0x1E, 0x5E], //
0x5F: [0x5F, 0x1F, 0x5F], // _
// Numeric pad
0x60: [0x30, 0x30, 0x30], // 0
0x61: [0x31, 0x31, 0x31], // 1
0x62: [0x32, 0x32, 0x32], // 2
0x63: [0x33, 0x33, 0x33], // 3
0x64: [0x34, 0x34, 0x34], // 4
0x65: [0x35, 0x35, 0x35], // 5
0x66: [0x36, 0x36, 0x36], // 6
0x67: [0x37, 0x37, 0x37], // 7
0x68: [0x38, 0x38, 0x38], // 8
0x69: [0x39, 0x39, 0x39], // 9
0x6A: [0x2A, 0x2A, 0x2A], // *
0x6B: [0x2B, 0x2B, 0x2B], // +
0x6D: [0x2D, 0x2D, 0x2D], // -
0x6E: [0x2E, 0x2E, 0x2E], // .
0x6F: [0x2F, 0x2F, 0x39], // /
// Stray keys
0xAD: [0x2D, 0x2D, 0x5F], // - - _
0xBA: [0x3B, 0x3B, 0x3A], // ; - :
0xBB: [0x3D, 0x3D, 0x2B], // = - +
0xBC: [0x2C, 0x2C, 0x3C], // , - <
0xBD: [0x2D, 0x2D, 0x5F], // - - _
0xBE: [0x2E, 0x2E, 0x3E], // . - >
0xBF: [0x2F, 0x2F, 0x3F], // / - ?
0xC0: [0x60, 0x60, 0x7E], // ` - ~
0xDB: [0x5B, 0x1B, 0x7B], // [ - {
0xDC: [0x5C, 0x1C, 0x7C], // \ - |
0xDD: [0x5D, 0x1D, 0x7D], // ] - }
0xDE: [0x27, 0x22, 0x22], // ' - '
0xFF: [0xFF, 0xFF, 0xFF] // No comma line
} as const;
function isKeyboardCode(code: number): code is KnownKeys<typeof keymap> {
return code in keymap;
}
const uiKitMap = {
'Dead': 0xFF,
'UIKeyInputLeftArrow': 0x08,
'UIKeyInputRightArrow': 0x15,
'UIKeyInputUpArrow': 0x0B,
'UIKeyInputDownArrow': 0x0A,
'UIKeyInputEscape': 0x1B
} as const;
function isUiKitKey(k: string): k is KnownKeys<typeof uiKitMap> {
return k in uiKitMap;
}
const keys2 = [
[
['1', '2', '3', '4', '5', '6', '7', '8', '9', '0', ':', '-', 'RESET'],
['ESC', 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', 'REPT', 'RETURN'],
['CTRL', 'A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L', ';', '&larr;', '&rarr;'],
['SHIFT', 'Z', 'X', 'C', 'V', 'B', 'N', 'M', ',', '.', '/', 'SHIFT'],
['POWER', '&nbsp;']
], [
['!', '"', '#', '$', '%', '&', '\'', '(', ')', '0', '*', '=', 'RESET'],
['ESC', 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', '@', 'REPT', 'RETURN'],
['CTRL', 'A', 'S', 'D', 'F', 'BELL', 'H', 'J', 'K', 'L', '+', '&larr;', '&rarr;'],
['SHIFT', 'Z', 'X', 'C', 'V', 'B', '^', ']', '<', '>', '?', 'SHIFT'],
['POWER', '&nbsp;']
]
] as const;
type Key2 = DeepMemberOf<typeof keys2>;
const keys2e = [
[
['ESC', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=', 'DELETE'],
['TAB', 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', '[', ']', '\\'],
['CTRL', 'A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L', ';', '"', 'RETURN'],
['SHIFT', 'Z', 'X', 'C', 'V', 'B', 'N', 'M', ',', '.', '/', 'SHIFT'],
['LOCK', '`', 'POW', 'OPEN_APPLE', '&nbsp;', 'CLOSED_APPLE', '&larr;', '&rarr;', '&darr;', '&uarr;']
], [
['ESC', '!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '_', '+', 'DELETE'],
['TAB', 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', '{', '}', '|'],
['CTRL', 'A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', '\'', 'RETURN'],
['SHIFT', 'Z', 'X', 'C', 'V', 'B', 'N', 'M', '<', '>', '?', 'SHIFT'],
['CAPS', '~', 'POW', 'OPEN_APPLE', '&nbsp;', 'CLOSED_APPLE', '&larr;', '&rarr;', '&darr;', '&uarr;']
]
] as const;
type Key2e = DeepMemberOf<typeof keys2e>;
type Key = Key2 | Key2e;
type KeyFunction = (key: KeyboardEvent) => void;
export default class KeyBoard {
private kb: HTMLElement;
private keys;
private shifted = false;
private controlled = false;
private capslocked = true;
// Initially caps lock on physical keyboard is assumed to be off,
// but on emulated keyboard it is on.
private capslockKeyUsed = false;
private optioned = false;
private commanded = false;
private functions: Record<string, KeyFunction> = {};
constructor(private cpu: CPU6502, private io: Apple2IO, private e: boolean) {
this.keys = e ? keys2e : keys2;
window.addEventListener('keydown', this.keydown);
window.addEventListener('keyup', this.keyup);
}
setFunction(key: string, fn: KeyFunction) {
this.functions[key] = fn;
}
mapKeyEvent(evt: KeyboardEvent) {
const code = evt.keyCode;
let key: byte = 0xff;
if (isUiKitKey(evt.key)) {
key = uiKitMap[evt.key];
} else if (isKeyboardCode(code)) {
key = keymap[code][evt.shiftKey ? 2 : (evt.ctrlKey ? 1 : 0)];
if (code !== 20 && this.capslockKeyUsed) {
this.capslockKey(evt.getModifierState('CapsLock'));
}
if (this.capslocked && key >= 0x61 && key <= 0x7A) {
key -= 0x20;
}
} else {
debug('Unhandled key = ' + toHex(code));
}
if (key === 0x7F && evt.shiftKey && evt.ctrlKey) {
this.cpu.reset();
key = 0xff;
}
return key;
}
shiftKey(down: boolean) {
const shiftKeys = this.kb.querySelectorAll('.key-SHIFT');
this.shifted = down;
if (down) {
this.io.buttonUp(2);
shiftKeys.forEach((key) => { key.classList.add('active'); });
} else {
this.io.buttonDown(2);
shiftKeys.forEach((key) => { key.classList.remove('active'); });
}
}
controlKey(down: boolean) {
const ctrlKey = this.kb.querySelector('.key-CTRL');
this.controlled = down;
if (down) {
ctrlKey!.classList.add('active');
} else {
ctrlKey!.classList.remove('active');
}
}
commandKey(down: boolean) {
const commandKey = this.kb.querySelector('.key-OPEN_APPLE');
if (!commandKey) {
return;
}
this.commanded = down;
if (down) {
this.io.buttonDown(0);
commandKey.classList.add('active');
} else {
this.io.buttonUp(0);
commandKey.classList.remove('active');
}
}
optionKey(down: boolean) {
const optionKey = this.kb.querySelector('.key-CLOSED_APPLE');
if (!optionKey) {
return;
}
this.optioned = down;
if (down) {
this.io.buttonDown(1);
optionKey.classList.add('active');
} else {
this.io.buttonUp(1);
optionKey.classList.remove('active');
}
}
/**
* Sets the state of the Caps Lock key. It is very complicated.
* @param down if `true`, Caps Lock is pressed; if `false` Caps Lock is not pressed;
* if `undefined`, Caps Lock is toggled and its "used" state is set to false;
* if called with no arguments, the state is toggled _if_ it has been used before,
* otherwise the used state is set to true.
*/
capslockKey(down?: boolean | undefined) {
const capsLock = this.kb.querySelector('.key-LOCK');
if (arguments.length === 0) {
if (this.capslockKeyUsed) {
this.capslocked = !this.capslocked;
} else {
this.capslockKeyUsed = true;
}
} else if (down === undefined) {
this.capslocked = !this.capslocked;
this.capslockKeyUsed = false;
} else {
this.capslocked = down;
}
if (this.capslocked) {
capsLock!.classList.add('active');
} else {
capsLock!.classList.remove('active');
}
}
reset(event: Event) {
event.preventDefault();
event.stopPropagation();
this.cpu.reset();
}
create(el: string) {
this.kb = document.querySelector(el)!;
let x, y, row, key, label, label1, label2;
const buildLabel = (k: string) => {
const span = document.createElement('span');
span.innerHTML = k;
if (k.length > 1 && k.slice(0, 1) !== '&')
span.classList.add('small');
return span;
};
for (y = 0; y < 5; y++) {
row = document.createElement('div');
row.classList.add('row');
row.classList.add(`row${y}`);
this.kb.append(row);
for (x = 0; x < this.keys[0][y].length; x++) {
const key1 = this.keys[0][y][x];
const key2 = this.keys[1][y][x];
label = document.createElement('div');
label1 = buildLabel(key1);
label2 = buildLabel(key2);
key = document.createElement('div');
key.classList.add('key');
key.classList.add('key-' + key1.replace(/[&#;]/g, ''));
if (key1.length > 1) {
if (key1 === 'LOCK')
key.classList.add('v-center2');
else
key.classList.add('v-center');
}
if (key1 !== key2) {
key.classList.add('key-' + key2.replace(/[&;]/g, ''));
label.append(label2);
label.append(document.createElement('br'));
}
if (key1 === 'LOCK') {
key.classList.add('active');
}
label.append(label1);
key.append(label);
key.dataset.key1 = key1;
key.dataset.key2 = key2;
const mouseDown = this.genMouseDown(key, key1, key2);
const mouseUp = this.genMouseUp(key);
if (window.ontouchstart === undefined) {
key.addEventListener('mousedown', mouseDown);
key.addEventListener('mouseup', mouseUp);
key.addEventListener('mouseleave', mouseUp);
} else {
key.addEventListener('touchstart', mouseDown);
key.addEventListener('touchend', mouseUp);
key.addEventListener('touchleave', mouseUp);
}
row.append(key);
}
}
}
private genMouseDown(target: HTMLElement, key1: Key, key2: Key) {
return (ev: MouseEvent) => {
ev.preventDefault();
target.classList.add('pressed');
let key: string = this.shifted ? key2 : key1;
switch (key) {
case 'BELL':
key = 'G';
break;
case 'RETURN':
key = '\r';
break;
case 'TAB':
key = '\t';
break;
case 'DELETE':
key = '\x7F';
break;
case '&larr;':
key = '\x08';
break;
case '&rarr;':
key = '\x15';
break;
case '&darr;':
key = '\x0A';
break;
case '&uarr;':
key = '\x0B';
break;
case '&nbsp;':
key = ' ';
break;
case 'ESC':
key = '\x1B';
break;
default:
break;
}
if (key.length > 1) {
switch (key) {
case 'SHIFT':
this.shiftKey(!this.shifted);
break;
case 'CTRL':
this.controlKey(!this.controlled);
break;
case 'CAPS':
case 'LOCK':
this.capslockKey(undefined);
break;
case 'POW':
case 'POWER':
if (window.confirm('Power Cycle?'))
window.location.reload();
break;
case 'RESET':
this.cpu.reset();
break;
case 'OPEN_APPLE':
this.commandKey(!this.commanded);
break;
case 'CLOSED_APPLE':
this.optionKey(!this.optioned);
break;
default:
break;
}
} else {
if (this.controlled && key >= '@' && key <= '_') {
this.io.keyDown(key.charCodeAt(0) - 0x40);
} else if (this.e && !this.shifted && !this.capslocked &&
key >= 'A' && key <= 'Z') {
this.io.keyDown(key.charCodeAt(0) + 0x20);
} else {
this.io.keyDown(key.charCodeAt(0));
}
}
};
}
private dialogOpen() {
return !!document.querySelector('.modal.is-open');
}
private genMouseUp(target: HTMLElement) {
return () => target.classList.remove('pressed');
}
private keydown = (evt: KeyboardEvent) => {
if (!this.dialogOpen() && (!evt.metaKey || evt.ctrlKey || this.e)) {
evt.preventDefault();
const key = this.mapKeyEvent(evt);
if (key !== 0xff) {
this.io.keyDown(key);
return;
}
}
if (evt.key === 'Shift') {
this.shiftKey(true);
} else if (evt.key === 'CapsLock') {
this.capslockKey();
} else if (evt.key === 'Control') {
this.controlKey(true);
} else if (evt.key === 'Meta') { // AKA Command
this.commandKey(true);
} else if (evt.key === 'Alt') {
if (evt.location === 1) {
this.commandKey(true);
} else {
this.optionKey(true);
}
} else {
if (evt.key in this.functions) {
this.functions[evt.key](evt);
evt.preventDefault();
}
}
};
private keyup = (evt: KeyboardEvent) => {
if (!this.dialogOpen()) {
this.io.keyUp();
}
if (evt.key === 'Shift') { // Shift
this.shiftKey(false);
} else if (evt.key === 'Control') { // Control
this.controlKey(false);
} else if (evt.key === 'Meta') { // AKA Command
this.commandKey(false);
} else if (evt.key === 'Alt') { // Alt
if (evt.location === 1) {
this.commandKey(false);
} else {
this.optionKey(false);
}
}
};
}
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