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authorGerd Hoffmann <kraxel@redhat.com>2016-06-01 08:22:30 +0200
committerGerd Hoffmann <kraxel@redhat.com>2016-06-03 08:23:26 +0200
commitc5ce83334465ee5acb6789a2f22d125273761c9e (patch)
tree398c399d2da0ca42a4478e3778ea55a466d29d49 /ui
parent8efa5f29f83816ae34f428143de49acbaacccb24 (diff)
vnc: add configurable keyboard delay
Limits the rate kbd events from the vnc server are forwarded to the guest, so input devices which are typically low-bandwidth can keep up even on bulky input. v2: update documentation too. v3: spell fixes. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Tested-by: Yang Hongyang <hongyang.yang@easystack.cn> Message-id: 1464762150-25817-1-git-send-email-kraxel@redhat.com
Diffstat (limited to 'ui')
-rw-r--r--ui/vnc.c13
-rw-r--r--ui/vnc.h1
2 files changed, 12 insertions, 2 deletions
diff --git a/ui/vnc.c b/ui/vnc.c
index ddd01fdce6..c862fdcc9d 100644
--- a/ui/vnc.c
+++ b/ui/vnc.c
@@ -1629,6 +1629,7 @@ static void reset_keys(VncState *vs)
for(i = 0; i < 256; i++) {
if (vs->modifiers_state[i]) {
qemu_input_event_send_key_number(vs->vd->dcl.con, i, false);
+ qemu_input_event_send_key_delay(vs->vd->key_delay_ms);
vs->modifiers_state[i] = 0;
}
}
@@ -1638,9 +1639,9 @@ static void press_key(VncState *vs, int keysym)
{
int keycode = keysym2scancode(vs->vd->kbd_layout, keysym) & SCANCODE_KEYMASK;
qemu_input_event_send_key_number(vs->vd->dcl.con, keycode, true);
- qemu_input_event_send_key_delay(0);
+ qemu_input_event_send_key_delay(vs->vd->key_delay_ms);
qemu_input_event_send_key_number(vs->vd->dcl.con, keycode, false);
- qemu_input_event_send_key_delay(0);
+ qemu_input_event_send_key_delay(vs->vd->key_delay_ms);
}
static int current_led_state(VncState *vs)
@@ -1792,6 +1793,7 @@ static void do_key_event(VncState *vs, int down, int keycode, int sym)
if (qemu_console_is_graphic(NULL)) {
qemu_input_event_send_key_number(vs->vd->dcl.con, keycode, down);
+ qemu_input_event_send_key_delay(vs->vd->key_delay_ms);
} else {
bool numlock = vs->modifiers_state[0x45];
bool control = (vs->modifiers_state[0x1d] ||
@@ -1913,6 +1915,7 @@ static void vnc_release_modifiers(VncState *vs)
continue;
}
qemu_input_event_send_key_number(vs->vd->dcl.con, keycode, false);
+ qemu_input_event_send_key_delay(vs->vd->key_delay_ms);
}
}
@@ -3278,6 +3281,9 @@ static QemuOptsList qemu_vnc_opts = {
.name = "lock-key-sync",
.type = QEMU_OPT_BOOL,
},{
+ .name = "key-delay-ms",
+ .type = QEMU_OPT_NUMBER,
+ },{
.name = "sasl",
.type = QEMU_OPT_BOOL,
},{
@@ -3515,6 +3521,7 @@ void vnc_display_open(const char *id, Error **errp)
#endif
int acl = 0;
int lock_key_sync = 1;
+ int key_delay_ms;
if (!vs) {
error_setg(errp, "VNC display not active");
@@ -3633,6 +3640,7 @@ void vnc_display_open(const char *id, Error **errp)
reverse = qemu_opt_get_bool(opts, "reverse", false);
lock_key_sync = qemu_opt_get_bool(opts, "lock-key-sync", true);
+ key_delay_ms = qemu_opt_get_number(opts, "key-delay-ms", 1);
sasl = qemu_opt_get_bool(opts, "sasl", false);
#ifndef CONFIG_VNC_SASL
if (sasl) {
@@ -3764,6 +3772,7 @@ void vnc_display_open(const char *id, Error **errp)
}
#endif
vs->lock_key_sync = lock_key_sync;
+ vs->key_delay_ms = key_delay_ms;
device_id = qemu_opt_get(opts, "display");
if (device_id) {
diff --git a/ui/vnc.h b/ui/vnc.h
index 81a326116b..6568bca520 100644
--- a/ui/vnc.h
+++ b/ui/vnc.h
@@ -155,6 +155,7 @@ struct VncDisplay
DisplayChangeListener dcl;
kbd_layout_t *kbd_layout;
int lock_key_sync;
+ int key_delay_ms;
QemuMutex mutex;
QEMUCursor *cursor;