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VNC: Support for ExtendedKeyEvent client message 

This patch adds support for the ExtendedKeyEvent client message.  This message
allows a client to send raw scan codes directly to the server.  If the client
and server are using the same keymap, then it's unnecessary to use the '-k'
option with QEMU when this extension is supported.

This is extension is currently only implemented by gtk-vnc based clients
(gvncviewer, virt-manager, vinagre, etc.).

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5076 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aliguori 2008-08-23 23:27:37 +00:00
parent 492b239197
commit 9ca313aa08
1 changed files with 50 additions and 9 deletions
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59
vnc.c
View File

@ -939,12 +939,8 @@ static void press_key(VncState *vs, int keysym)
kbd_put_keycode(keysym2scancode(vs->kbd_layout, keysym) | 0x80);
}
static void do_key_event(VncState *vs, int down, uint32_t sym)
static void do_key_event(VncState *vs, int down, int keycode, int sym)
{
int keycode;
keycode = keysym2scancode(vs->kbd_layout, sym & 0xFFFF);
/* QEMU console switch */
switch(keycode) {
case 0x2a: /* Left Shift */
@ -1046,9 +1042,23 @@ static void do_key_event(VncState *vs, int down, uint32_t sym)
static void key_event(VncState *vs, int down, uint32_t sym)
{
int keycode;
if (sym >= 'A' && sym <= 'Z' && is_graphic_console())
sym = sym - 'A' + 'a';
do_key_event(vs, down, sym);
keycode = keysym2scancode(vs->kbd_layout, sym & 0xFFFF);
do_key_event(vs, down, keycode, sym);
}
static void ext_key_event(VncState *vs, int down,
uint32_t sym, uint16_t keycode)
{
/* if the user specifies a keyboard layout, always use it */
if (keyboard_layout)
key_event(vs, down, sym);
else
do_key_event(vs, down, keycode, sym);
}
static void framebuffer_update_request(VncState *vs, int incremental,
@ -1078,6 +1088,15 @@ static void framebuffer_update_request(VncState *vs, int incremental,
}
}
static void send_ext_key_event_ack(VncState *vs)
{
vnc_write_u8(vs, 0);
vnc_write_u8(vs, 0);
vnc_write_u16(vs, 1);
vnc_framebuffer_update(vs, 0, 0, vs->ds->width, vs->ds->height, -258);
vnc_flush(vs);
}
static void set_encodings(VncState *vs, int32_t *encodings, size_t n_encodings)
{
int i;
@ -1105,6 +1124,9 @@ static void set_encodings(VncState *vs, int32_t *encodings, size_t n_encodings)
case -257:
vs->has_pointer_type_change = 1;
break;
case -258:
send_ext_key_event_ack(vs);
break;
default:
break;
}
@ -1256,6 +1278,24 @@ static int protocol_client_msg(VncState *vs, uint8_t *data, size_t len)
client_cut_text(vs, read_u32(data, 4), data + 8);
break;
case 255:
if (len == 1)
return 2;
switch (read_u8(data, 1)) {
case 0:
if (len == 2)
return 12;
ext_key_event(vs, read_u16(data, 2),
read_u32(data, 4), read_u32(data, 8));
break;
default:
printf("Msg: %d\n", read_u16(data, 0));
vnc_client_error(vs);
break;
}
break;
default:
printf("Msg: %d\n", data[0]);
vnc_client_error(vs);
@ -1974,10 +2014,11 @@ void vnc_display_init(DisplayState *ds)
vs->ds = ds;
if (!keyboard_layout)
keyboard_layout = "en-us";
if (keyboard_layout)
vs->kbd_layout = init_keyboard_layout(keyboard_layout);
else
vs->kbd_layout = init_keyboard_layout("en-us");
vs->kbd_layout = init_keyboard_layout(keyboard_layout);
if (!vs->kbd_layout)
exit(1);