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terminal: forward evdev RESYNC events to linked devices

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Whenever we resync an evdev device (or disable it), we should send RESYNC
events to the linked upper layers. This allows to disable key-repeat and
assume some events got dropped.
This commit is contained in:
David Herrmann 2014-09-20 12:39:59 +02:00
parent 6022343476
commit 89febb631a
1 changed files with 18 additions and 4 deletions
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22
src/libsystemd-terminal/idev-evdev.c
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@ -102,7 +102,16 @@ static void idev_evdev_name(char *out, dev_t devnum) {
sprintf(out, "evdev/%u:%u", major(devnum), minor(devnum));
}
static int idev_evdev_raise(idev_evdev *evdev, struct input_event *event) {
static int idev_evdev_feed_resync(idev_evdev *evdev) {
idev_data data = {
.type = IDEV_DATA_RESYNC,
.resync = evdev->resync,
};
return idev_element_feed(&evdev->element, &data);
}
static int idev_evdev_feed_evdev(idev_evdev *evdev, struct input_event *event) {
idev_data data = {
.type = IDEV_DATA_EVDEV,
.resync = evdev->resync,
@ -156,7 +165,6 @@ static int idev_evdev_io(idev_evdev *evdev) {
* case we cannot keep up with the kernel.
* TODO: Make sure libevdev always reports SYN_DROPPED to us, regardless
* whether any event was synced afterwards.
* TODO: Forward SYN_DROPPED to attached devices.
*/
flags = LIBEVDEV_READ_FLAG_NORMAL;
@ -191,7 +199,7 @@ static int idev_evdev_io(idev_evdev *evdev) {
} else if (r == LIBEVDEV_READ_STATUS_SYNC) {
if (evdev->resync) {
/* sync-event */
r = idev_evdev_raise(evdev, &ev);
r = idev_evdev_feed_evdev(evdev, &ev);
if (r != 0) {
error = r;
break;
@ -200,10 +208,15 @@ static int idev_evdev_io(idev_evdev *evdev) {
/* start of sync */
evdev->resync = true;
flags = LIBEVDEV_READ_FLAG_SYNC;
r = idev_evdev_feed_resync(evdev);
if (r != 0) {
error = r;
break;
}
}
} else {
/* normal event */
r = idev_evdev_raise(evdev, &ev);
r = idev_evdev_feed_evdev(evdev, &ev);
if (r != 0) {
error = r;
break;
@ -288,6 +301,7 @@ static void idev_evdev_disable(idev_evdev *evdev) {
return;
evdev->running = false;
idev_evdev_feed_resync(evdev);
sd_event_source_set_enabled(evdev->fd_src, SD_EVENT_OFF);
sd_event_source_set_enabled(evdev->idle_src, SD_EVENT_OFF);
}