280 lines
7.7 KiB
JavaScript
280 lines
7.7 KiB
JavaScript
// Pulled a bunch of functions out of the guac source code to get a keysym
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// and then a wrapper
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// shitty but it works so /shrug
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export function GetKeysym(keyCode, keyIdentifier, key, location) {
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var keysym = keysym_from_key_identifier(key, location)
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|| keysym_from_keycode(keyCode, location);
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if (!keysym && key_identifier_sane(keyCode, keyIdentifier))
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keysym = keysym_from_key_identifier(keyIdentifier, location);
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return keysym;
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}
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function keysym_from_key_identifier(identifier, location) {
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if (!identifier)
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return null;
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var typedCharacter;
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// If identifier is U+xxxx, decode Unicode character
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var unicodePrefixLocation = identifier.indexOf("U+");
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if (unicodePrefixLocation >= 0) {
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var hex = identifier.substring(unicodePrefixLocation+2);
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typedCharacter = String.fromCharCode(parseInt(hex, 16));
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}
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// If single character, use that as typed character
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else if (identifier.length === 1)
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typedCharacter = identifier;
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// Otherwise, look up corresponding keysym
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else
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return get_keysym(keyidentifier_keysym[identifier], location);
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// Get codepoint
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var codepoint = typedCharacter.charCodeAt(0);
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return keysym_from_charcode(codepoint);
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}
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function get_keysym(keysyms, location) {
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if (!keysyms)
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return null;
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return keysyms[location] || keysyms[0];
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}
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function keysym_from_charcode(codepoint) {
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// Keysyms for control characters
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if (isControlCharacter(codepoint)) return 0xFF00 | codepoint;
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// Keysyms for ASCII chars
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if (codepoint >= 0x0000 && codepoint <= 0x00FF)
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return codepoint;
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// Keysyms for Unicode
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if (codepoint >= 0x0100 && codepoint <= 0x10FFFF)
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return 0x01000000 | codepoint;
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return null;
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}
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function isControlCharacter(codepoint) {
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return codepoint <= 0x1F || (codepoint >= 0x7F && codepoint <= 0x9F);
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}
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function keysym_from_keycode(keyCode, location) {
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return get_keysym(keycodeKeysyms[keyCode], location);
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}
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function key_identifier_sane(keyCode, keyIdentifier) {
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// Missing identifier is not sane
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if (!keyIdentifier)
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return false;
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// Assume non-Unicode keyIdentifier values are sane
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var unicodePrefixLocation = keyIdentifier.indexOf("U+");
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if (unicodePrefixLocation === -1)
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return true;
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// If the Unicode codepoint isn't identical to the keyCode,
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// then the identifier is likely correct
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var codepoint = parseInt(keyIdentifier.substring(unicodePrefixLocation+2), 16);
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if (keyCode !== codepoint)
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return true;
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// The keyCodes for A-Z and 0-9 are actually identical to their
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// Unicode codepoints
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if ((keyCode >= 65 && keyCode <= 90) || (keyCode >= 48 && keyCode <= 57))
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return true;
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// The keyIdentifier does NOT appear sane
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return false;
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}
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var keycodeKeysyms = {
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8: [0xFF08], // backspace
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9: [0xFF09], // tab
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12: [0xFF0B, 0xFF0B, 0xFF0B, 0xFFB5], // clear / KP 5
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13: [0xFF0D], // enter
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16: [0xFFE1, 0xFFE1, 0xFFE2], // shift
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17: [0xFFE3, 0xFFE3, 0xFFE4], // ctrl
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18: [0xFFE9, 0xFFE9, 0xFE03], // alt
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19: [0xFF13], // pause/break
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20: [0xFFE5], // caps lock
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27: [0xFF1B], // escape
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32: [0x0020], // space
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33: [0xFF55, 0xFF55, 0xFF55, 0xFFB9], // page up / KP 9
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34: [0xFF56, 0xFF56, 0xFF56, 0xFFB3], // page down / KP 3
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35: [0xFF57, 0xFF57, 0xFF57, 0xFFB1], // end / KP 1
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36: [0xFF50, 0xFF50, 0xFF50, 0xFFB7], // home / KP 7
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37: [0xFF51, 0xFF51, 0xFF51, 0xFFB4], // left arrow / KP 4
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38: [0xFF52, 0xFF52, 0xFF52, 0xFFB8], // up arrow / KP 8
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39: [0xFF53, 0xFF53, 0xFF53, 0xFFB6], // right arrow / KP 6
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40: [0xFF54, 0xFF54, 0xFF54, 0xFFB2], // down arrow / KP 2
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45: [0xFF63, 0xFF63, 0xFF63, 0xFFB0], // insert / KP 0
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46: [0xFFFF, 0xFFFF, 0xFFFF, 0xFFAE], // delete / KP decimal
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91: [0xFFEB], // left window key (hyper_l)
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92: [0xFF67], // right window key (menu key?)
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93: null, // select key
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96: [0xFFB0], // KP 0
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97: [0xFFB1], // KP 1
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98: [0xFFB2], // KP 2
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99: [0xFFB3], // KP 3
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100: [0xFFB4], // KP 4
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101: [0xFFB5], // KP 5
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102: [0xFFB6], // KP 6
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103: [0xFFB7], // KP 7
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104: [0xFFB8], // KP 8
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105: [0xFFB9], // KP 9
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106: [0xFFAA], // KP multiply
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107: [0xFFAB], // KP add
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109: [0xFFAD], // KP subtract
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110: [0xFFAE], // KP decimal
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111: [0xFFAF], // KP divide
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112: [0xFFBE], // f1
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113: [0xFFBF], // f2
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114: [0xFFC0], // f3
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115: [0xFFC1], // f4
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116: [0xFFC2], // f5
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117: [0xFFC3], // f6
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118: [0xFFC4], // f7
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119: [0xFFC5], // f8
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120: [0xFFC6], // f9
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121: [0xFFC7], // f10
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122: [0xFFC8], // f11
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123: [0xFFC9], // f12
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144: [0xFF7F], // num lock
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145: [0xFF14], // scroll lock
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225: [0xFE03] // altgraph (iso_level3_shift)
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};
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var keyidentifier_keysym = {
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"Again": [0xFF66],
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"AllCandidates": [0xFF3D],
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"Alphanumeric": [0xFF30],
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"Alt": [0xFFE9, 0xFFE9, 0xFE03],
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"Attn": [0xFD0E],
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"AltGraph": [0xFE03],
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"ArrowDown": [0xFF54],
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"ArrowLeft": [0xFF51],
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"ArrowRight": [0xFF53],
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"ArrowUp": [0xFF52],
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"Backspace": [0xFF08],
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"CapsLock": [0xFFE5],
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"Cancel": [0xFF69],
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"Clear": [0xFF0B],
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"Convert": [0xFF21],
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"Copy": [0xFD15],
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"Crsel": [0xFD1C],
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"CrSel": [0xFD1C],
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"CodeInput": [0xFF37],
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"Compose": [0xFF20],
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"Control": [0xFFE3, 0xFFE3, 0xFFE4],
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"ContextMenu": [0xFF67],
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"DeadGrave": [0xFE50],
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"DeadAcute": [0xFE51],
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"DeadCircumflex": [0xFE52],
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"DeadTilde": [0xFE53],
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"DeadMacron": [0xFE54],
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"DeadBreve": [0xFE55],
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"DeadAboveDot": [0xFE56],
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"DeadUmlaut": [0xFE57],
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"DeadAboveRing": [0xFE58],
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"DeadDoubleacute": [0xFE59],
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"DeadCaron": [0xFE5A],
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"DeadCedilla": [0xFE5B],
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"DeadOgonek": [0xFE5C],
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"DeadIota": [0xFE5D],
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"DeadVoicedSound": [0xFE5E],
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"DeadSemivoicedSound": [0xFE5F],
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"Delete": [0xFFFF],
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"Down": [0xFF54],
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"End": [0xFF57],
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"Enter": [0xFF0D],
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"EraseEof": [0xFD06],
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"Escape": [0xFF1B],
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"Execute": [0xFF62],
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"Exsel": [0xFD1D],
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"ExSel": [0xFD1D],
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"F1": [0xFFBE],
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"F2": [0xFFBF],
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"F3": [0xFFC0],
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"F4": [0xFFC1],
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"F5": [0xFFC2],
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"F6": [0xFFC3],
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"F7": [0xFFC4],
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"F8": [0xFFC5],
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"F9": [0xFFC6],
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"F10": [0xFFC7],
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"F11": [0xFFC8],
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"F12": [0xFFC9],
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"F13": [0xFFCA],
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"F14": [0xFFCB],
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"F15": [0xFFCC],
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"F16": [0xFFCD],
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"F17": [0xFFCE],
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"F18": [0xFFCF],
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"F19": [0xFFD0],
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"F20": [0xFFD1],
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"F21": [0xFFD2],
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"F22": [0xFFD3],
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"F23": [0xFFD4],
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"F24": [0xFFD5],
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"Find": [0xFF68],
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"GroupFirst": [0xFE0C],
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"GroupLast": [0xFE0E],
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"GroupNext": [0xFE08],
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"GroupPrevious": [0xFE0A],
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"FullWidth": null,
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"HalfWidth": null,
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"HangulMode": [0xFF31],
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"Hankaku": [0xFF29],
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"HanjaMode": [0xFF34],
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"Help": [0xFF6A],
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"Hiragana": [0xFF25],
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"HiraganaKatakana": [0xFF27],
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"Home": [0xFF50],
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"Hyper": [0xFFED, 0xFFED, 0xFFEE],
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"Insert": [0xFF63],
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"JapaneseHiragana": [0xFF25],
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"JapaneseKatakana": [0xFF26],
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"JapaneseRomaji": [0xFF24],
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"JunjaMode": [0xFF38],
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"KanaMode": [0xFF2D],
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"KanjiMode": [0xFF21],
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"Katakana": [0xFF26],
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"Left": [0xFF51],
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"Meta": [0xFFE7, 0xFFE7, 0xFFE8],
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"ModeChange": [0xFF7E],
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"NumLock": [0xFF7F],
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"PageDown": [0xFF56],
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"PageUp": [0xFF55],
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"Pause": [0xFF13],
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"Play": [0xFD16],
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"PreviousCandidate": [0xFF3E],
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"PrintScreen": [0xFD1D],
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"Redo": [0xFF66],
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"Right": [0xFF53],
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"RomanCharacters": null,
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"Scroll": [0xFF14],
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"Select": [0xFF60],
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"Separator": [0xFFAC],
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"Shift": [0xFFE1, 0xFFE1, 0xFFE2],
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"SingleCandidate": [0xFF3C],
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"Super": [0xFFEB, 0xFFEB, 0xFFEC],
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"Tab": [0xFF09],
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"Up": [0xFF52],
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"Undo": [0xFF65],
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"Win": [0xFFEB],
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"Zenkaku": [0xFF28],
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"ZenkakuHankaku": [0xFF2A]
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}; |