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backend/libinput: ignore multiple events for same pointer button

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If the same button is pressed on two devices on the same seat,
ignore the second event.

This is also what Mutter does.

Closes: https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/3665
This commit is contained in:
Simon Ser 2023-06-08 17:04:20 +02:00
parent 670915eeea
commit e1c6801b65
1 changed files with 10 additions and 0 deletions
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10
backend/libinput/pointer.c
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@ -63,12 +63,22 @@ void handle_pointer_button(struct libinput_event *event,
wlr_event.time_msec =
usec_to_msec(libinput_event_pointer_get_time_usec(pevent));
wlr_event.button = libinput_event_pointer_get_button(pevent);
// Ignore events which aren't a seat-wide state change. For instance, if
// the same button is pressed twice on the same seat, ignore the second
// press.
uint32_t seat_count = libinput_event_pointer_get_seat_button_count(pevent);
switch (libinput_event_pointer_get_button_state(pevent)) {
case LIBINPUT_BUTTON_STATE_PRESSED:
wlr_event.state = WLR_BUTTON_PRESSED;
if (seat_count != 1) {
return;
}
break;
case LIBINPUT_BUTTON_STATE_RELEASED:
wlr_event.state = WLR_BUTTON_RELEASED;
if (seat_count != 0) {
return;
}
break;
}
wl_signal_emit_mutable(&pointer->events.button, &wlr_event);