Function Input_EventHandler

src/input/input.c:174–220

Receive the keyboard scancodes from the AT keyboard */

/* Receive the keyboard scancodes from the AT keyboard */
void Input_EventHandler(uint8 key)
{
	uint8 state;
	uint8 i;

	state = 0;

	/* escape code for escaped scancodes */
	if (key == 0xE0) {
		s_input_extendedKey = true;
		return;
	}

	/* Key up */
	if ((key & 0x80) != 0) {
		key &= 0x7F;
		state |= 0x08;	/* KEYUP */
	}

	if (s_input_extendedKey) {
		s_input_extendedKey = false;

		for (i = 0; i < lengthof(s_translateExtendedMap); i++) {
			if (s_translateExtendedMap[i] == key) {
				key = s_translateMap[i];
				break;
			}
		}
		if (i == 16) return;
	} else if (key == 0x7A) {
		key = 0x80;
	} else {
		key = s_keyTranslate[key & 0x7F];
	}

	if ((s_activeInputMap[7] & 0x4) != 0) return;	/* 0x3a : LCTRL */
	if ((s_activeInputMap[7] & 0x50) != 0) state |= 0x04;	/* 0x3c 0x3e : LALT RALT => ALT */

	key = Input_Keyboard_Translate(key) & 0xFF;

	if ((s_activeInputMap[7] & 0x2) != 0) state |= 0x01;	/* 0x39 : RSHIFT */

	if (state == 0x06 && key == 0x68) return;	/* state == ALT+??? && key == KP DEL */
	if (state == 0x06 && key == 0x4C) return;	/* state == ALT+??? && key == DELETE */

	Input_HandleInput((state << 8) | key);
}

/**
 * Clears the given bits in input flags.