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/*
* This work is licensed under the terms of the GNU GPL, version 2 or
* (at your option) any later version. See the COPYING file in the
* top-level directory.
*/
#include "qemu/osdep.h"
#include "qemu/bitmap.h"
#include "qemu/queue.h"
#include "ui/console.h"
#include "ui/input.h"
#include "ui/kbd-state.h"
struct QKbdState {
QemuConsole *con;
int key_delay_ms;
DECLARE_BITMAP(keys, Q_KEY_CODE__MAX);
DECLARE_BITMAP(mods, QKBD_MOD__MAX);
};
static void qkbd_state_modifier_update(QKbdState *kbd,
QKeyCode qcode1, QKeyCode qcode2,
QKbdModifier mod)
{
if (test_bit(qcode1, kbd->keys) || test_bit(qcode2, kbd->keys)) {
set_bit(mod, kbd->mods);
} else {
clear_bit(mod, kbd->mods);
}
}
bool qkbd_state_modifier_get(QKbdState *kbd, QKbdModifier mod)
{
return test_bit(mod, kbd->mods);
}
bool qkbd_state_key_get(QKbdState *kbd, QKeyCode qcode)
{
return test_bit(qcode, kbd->keys);
}
void qkbd_state_key_event(QKbdState *kbd, QKeyCode qcode, bool down)
{
bool state = test_bit(qcode, kbd->keys);
if (down == false /* got key-up event */ &&
state == false /* key is not pressed */) {
/*
* Filter out suspicious key-up events.
*
* This allows simply sending along all key-up events, and
* this function will filter out everything where the
* corresponding key-down event wasn't sent to the guest, for
* example due to being a host hotkey.
*
* Note that key-down events on already pressed keys are *not*
* suspicious, those are keyboard autorepeat events.
*/
return;
}
/* update key and modifier state */
if (down) {
set_bit(qcode, kbd->keys);
} else {
clear_bit(qcode, kbd->keys);
}
switch (qcode) {
case Q_KEY_CODE_SHIFT:
case Q_KEY_CODE_SHIFT_R:
qkbd_state_modifier_update(kbd, Q_KEY_CODE_SHIFT, Q_KEY_CODE_SHIFT_R,
QKBD_MOD_SHIFT);
break;
case Q_KEY_CODE_CTRL:
case Q_KEY_CODE_CTRL_R:
qkbd_state_modifier_update(kbd, Q_KEY_CODE_CTRL, Q_KEY_CODE_CTRL_R,
QKBD_MOD_CTRL);
break;
case Q_KEY_CODE_ALT:
qkbd_state_modifier_update(kbd, Q_KEY_CODE_ALT, Q_KEY_CODE_ALT,
QKBD_MOD_ALT);
break;
case Q_KEY_CODE_ALT_R:
qkbd_state_modifier_update(kbd, Q_KEY_CODE_ALT_R, Q_KEY_CODE_ALT_R,
QKBD_MOD_ALTGR);
break;
case Q_KEY_CODE_CAPS_LOCK:
if (down) {
change_bit(QKBD_MOD_CAPSLOCK, kbd->mods);
}
break;
case Q_KEY_CODE_NUM_LOCK:
if (down) {
change_bit(QKBD_MOD_NUMLOCK, kbd->mods);
}
break;
default:
/* keep gcc happy */
break;
}
/* send to guest */
if (qemu_console_is_graphic(kbd->con)) {
qemu_input_event_send_key_qcode(kbd->con, qcode, down);
if (kbd->key_delay_ms) {
qemu_input_event_send_key_delay(kbd->key_delay_ms);
}
}
}
void qkbd_state_lift_all_keys(QKbdState *kbd)
{
int qcode;
for (qcode = 0; qcode < Q_KEY_CODE__MAX; qcode++) {
if (test_bit(qcode, kbd->keys)) {
qkbd_state_key_event(kbd, qcode, false);
}
}
}
void qkbd_state_set_delay(QKbdState *kbd, int delay_ms)
{
kbd->key_delay_ms = delay_ms;
}
void qkbd_state_free(QKbdState *kbd)
{
g_free(kbd);
}
QKbdState *qkbd_state_init(QemuConsole *con)
{
QKbdState *kbd = g_new0(QKbdState, 1);
kbd->con = con;
return kbd;
}
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