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ui/vnc: Do not use console_select()

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console_select() is shared by other displays and a console_select() call
from one of them triggers console switching also in ui/curses,
circumventing key state reinitialization that needs to be performed in
preparation and resulting in stuck keys.

Use its internal state to track the current active console to prevent
such a surprise console switch.

Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20240319-console-v2-2-3fd6feef321a@daynix.com>
This commit is contained in:
Akihiko Odaki 2024-03-19 12:08:40 +09:00 committed by Marc-André Lureau
parent 271a197425
commit d4c199566f
5 changed files with 39 additions and 5 deletions
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1
include/ui/console.h
View file

@ -413,6 +413,7 @@ void qemu_console_early_init(void);
void qemu_console_set_display_gl_ctx(QemuConsole *con, DisplayGLCtx *ctx);
QemuConsole *qemu_console_lookup_default(void);
QemuConsole *qemu_console_lookup_by_index(unsigned int index);
QemuConsole *qemu_console_lookup_by_device(DeviceState *dev, uint32_t head);
QemuConsole *qemu_console_lookup_by_device_name(const char *device_id,

11
include/ui/kbd-state.h
View file

@ -99,4 +99,15 @@ bool qkbd_state_modifier_get(QKbdState *kbd, QKbdModifier mod);
*/
void qkbd_state_lift_all_keys(QKbdState *kbd);
/**
* qkbd_state_switch_console: Switch console.
*
* This sends key up events to the previous console for all keys which are in
* down state to prevent keys being stuck, and remembers the new console.
*
* @kbd: state tracker state.
* @con: new QemuConsole for this state tracker.
*/
void qkbd_state_switch_console(QKbdState *kbd, QemuConsole *con);
#endif /* QEMU_UI_KBD_STATE_H */

12
ui/console.c
View file

@ -1325,6 +1325,18 @@ void graphic_console_close(QemuConsole *con)
dpy_gfx_replace_surface(con, surface);
}
QemuConsole *qemu_console_lookup_default(void)
{
QemuConsole *con;
QTAILQ_FOREACH(con, &consoles, next) {
if (QEMU_IS_GRAPHIC_CONSOLE(con)) {
return con;
}
}
return QTAILQ_FIRST(&consoles);
}
QemuConsole *qemu_console_lookup_by_index(unsigned int index)
{
QemuConsole *con;

6
ui/kbd-state.c
View file

@ -117,6 +117,12 @@ void qkbd_state_lift_all_keys(QKbdState *kbd)
}
}
void qkbd_state_switch_console(QKbdState *kbd, QemuConsole *con)
{
qkbd_state_lift_all_keys(kbd);
kbd->con = con;
}
void qkbd_state_set_delay(QKbdState *kbd, int delay_ms)
{
kbd->key_delay_ms = delay_ms;

14
ui/vnc.c
View file

@ -1872,12 +1872,16 @@ static void do_key_event(VncState *vs, int down, int keycode, int sym)
/* QEMU console switch */
switch (qcode) {
case Q_KEY_CODE_1 ... Q_KEY_CODE_9: /* '1' to '9' keys */
if (vs->vd->dcl.con == NULL && down &&
if (down &&
qkbd_state_modifier_get(vs->vd->kbd, QKBD_MOD_CTRL) &&
qkbd_state_modifier_get(vs->vd->kbd, QKBD_MOD_ALT)) {
/* Reset the modifiers sent to the current console */
qkbd_state_lift_all_keys(vs->vd->kbd);
console_select(qcode - Q_KEY_CODE_1);
QemuConsole *con = qemu_console_lookup_by_index(qcode - Q_KEY_CODE_1);
if (con) {
unregister_displaychangelistener(&vs->vd->dcl);
qkbd_state_switch_console(vs->vd->kbd, con);
vs->vd->dcl.con = con;
register_displaychangelistener(&vs->vd->dcl);
}
return;
}
default:
@ -4206,7 +4210,7 @@ void vnc_display_open(const char *id, Error **errp)
goto fail;
}
} else {
con = NULL;
con = qemu_console_lookup_default();
}
if (con != vd->dcl.con) {