mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2025-01-24 18:24:45 -05:00
4fef895eda
The system can finally idle without burning CPU. :^) There are some issues with scheduling making the mouse cursor sloppy and unresponsive that need to be dealt with.
145 lines
3.5 KiB
C++
145 lines
3.5 KiB
C++
#include "types.h"
|
|
#include "i386.h"
|
|
#include "IO.h"
|
|
#include "PIC.h"
|
|
#include "Keyboard.h"
|
|
#include "VirtualConsole.h"
|
|
#include <AK/Assertions.h>
|
|
|
|
#define IRQ_KEYBOARD 1
|
|
|
|
#define I8042_BUFFER 0x60
|
|
#define I8042_STATUS 0x64
|
|
|
|
#define SET_LEDS 0xED
|
|
#define DATA_AVAILABLE 0x01
|
|
#define I8042_ACK 0xFA
|
|
|
|
#define MOD_ALT 1
|
|
#define MOD_CTRL 2
|
|
#define MOD_SHIFT 4
|
|
|
|
static char map[0x100] =
|
|
{
|
|
0, 0, '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=', 0x08, 0,
|
|
'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']', 0, 0,
|
|
'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', '\'', '`', 0, '\\',
|
|
'z', 'x', 'c', 'v', 'b', 'n', 'm', ',', '.', '/',
|
|
0, 0, 0, ' '
|
|
};
|
|
|
|
static char shift_map[0x100] =
|
|
{
|
|
0, 0, '!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '_', '+', 0, 0,
|
|
'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', '{', '}', 0, 0,
|
|
'A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', '"', '~', 0, '|',
|
|
'Z', 'X', 'C', 'V', 'B', 'N', 'M', '<', '>', '?',
|
|
0, 0, 0, ' '
|
|
};
|
|
|
|
void Keyboard::emit(byte ch)
|
|
{
|
|
Key key;
|
|
key.character = ch;
|
|
key.modifiers = m_modifiers;
|
|
if (m_client)
|
|
m_client->on_key_pressed(key);
|
|
m_queue.enqueue(key);
|
|
}
|
|
|
|
void Keyboard::handle_irq()
|
|
{
|
|
while (IO::in8(0x64) & 1) {
|
|
byte ch = IO::in8(0x60);
|
|
switch (ch) {
|
|
case 0x38: m_modifiers |= Mod_Alt; break;
|
|
case 0xB8: m_modifiers &= ~Mod_Alt; break;
|
|
case 0x1D: m_modifiers |= Mod_Ctrl; break;
|
|
case 0x9D: m_modifiers &= ~Mod_Ctrl; break;
|
|
case 0x2A: m_modifiers |= Mod_Shift; break;
|
|
case 0xAA: m_modifiers &= ~Mod_Shift; break;
|
|
case 0x1C: /* enter */ emit('\n'); break;
|
|
case 0xFA: /* i8042 ack */ break;
|
|
default:
|
|
if (ch & 0x80) {
|
|
// key has been depressed
|
|
break;
|
|
}
|
|
if (m_modifiers & MOD_ALT) {
|
|
switch (map[ch]) {
|
|
case '1':
|
|
case '2':
|
|
case '3':
|
|
case '4':
|
|
VirtualConsole::switch_to(map[ch] - '0' - 1);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
if (!m_modifiers)
|
|
emit(map[ch]);
|
|
else if (m_modifiers & Mod_Shift)
|
|
emit(shift_map[ch]);
|
|
else if (m_modifiers & Mod_Ctrl)
|
|
emit(map[ch]);
|
|
}
|
|
//break;
|
|
}
|
|
}
|
|
|
|
static Keyboard* s_the;
|
|
|
|
Keyboard& Keyboard::the()
|
|
{
|
|
ASSERT(s_the);
|
|
return *s_the;
|
|
}
|
|
|
|
Keyboard::Keyboard()
|
|
: IRQHandler(IRQ_KEYBOARD)
|
|
, CharacterDevice(85, 1)
|
|
{
|
|
s_the = this;
|
|
|
|
// Empty the buffer of any pending data.
|
|
// I don't care what you've been pressing until now!
|
|
while (IO::in8(I8042_STATUS ) & DATA_AVAILABLE)
|
|
IO::in8(I8042_BUFFER);
|
|
|
|
enable_irq();
|
|
}
|
|
|
|
Keyboard::~Keyboard()
|
|
{
|
|
}
|
|
|
|
bool Keyboard::can_read(Process&) const
|
|
{
|
|
return !m_queue.is_empty();
|
|
}
|
|
|
|
ssize_t Keyboard::read(Process&, byte* buffer, size_t size)
|
|
{
|
|
ssize_t nread = 0;
|
|
while ((size_t)nread < size) {
|
|
if (m_queue.is_empty())
|
|
break;
|
|
// Don't return partial data frames.
|
|
if ((size - nread) < 2)
|
|
break;
|
|
auto key = m_queue.dequeue();
|
|
buffer[nread++] = key.character;
|
|
buffer[nread++] = key.modifiers;
|
|
}
|
|
return nread;
|
|
}
|
|
|
|
ssize_t Keyboard::write(Process&, const byte*, size_t)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
KeyboardClient::~KeyboardClient()
|
|
{
|
|
}
|