Add LIBEVENT_EVENT_NONE

This event type is needed to notify callers that there is currently no
event waiting (in a follow-up patch). Also, it it avoids true/false
inconsistencies on event types (LIBINPUT_EVENT_ADDED_SEAT would otherwise be
the only FALSE event). While that's not technically necessary, it may prevent
the odd bug further down the road.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

diff --git a/src/libinput.c b/src/libinput.c
index d3aca8b95980247ca8088c48719e7d43dc6c3e8b..713593e4e9fde95b8832a3762cddef687e46bd7d 100644 (file)
--- a/src/libinput.c
+++ b/src/libinput.c
@@ -35,6 +35,7 @@
 #include "evdev.h"
 
 enum libinput_event_class {
+       LIBINPUT_EVENT_CLASS_NONE,
        LIBINPUT_EVENT_CLASS_BASE,
        LIBINPUT_EVENT_CLASS_SEAT,
        LIBINPUT_EVENT_CLASS_DEVICE,
@@ -418,6 +419,9 @@ static enum libinput_event_class
 libinput_event_get_class(struct libinput_event *event)
 {
        switch (event->type) {
+       case LIBINPUT_EVENT_NONE:
+               return LIBINPUT_EVENT_CLASS_NONE;
+
        case LIBINPUT_EVENT_ADDED_SEAT:
        case LIBINPUT_EVENT_REMOVED_SEAT:
        case LIBINPUT_EVENT_ADDED_DEVICE:
@@ -444,6 +448,7 @@ libinput_event_destroy(struct libinput_event *event)
                return;
 
        switch (libinput_event_get_class(event)) {
+       case LIBINPUT_EVENT_CLASS_NONE:
        case LIBINPUT_EVENT_CLASS_BASE:
                break;
        case LIBINPUT_EVENT_CLASS_SEAT:
@@ -873,6 +878,7 @@ libinput_post_event(struct libinput *libinput,
        }
 
        switch (libinput_event_get_class(event)) {
+       case LIBINPUT_EVENT_CLASS_NONE:
        case LIBINPUT_EVENT_CLASS_BASE:
                break;
        case LIBINPUT_EVENT_CLASS_SEAT:

diff --git a/src/libinput.h b/src/libinput.h
index bb4f950c3213a3345e0b22e909fd82bc20eb685e..586d0f487c38a4c9bd758795e1e9b002b321f4d8 100644 (file)
--- a/src/libinput.h
+++ b/src/libinput.h
@@ -123,7 +123,8 @@ enum libinput_touch_type {
  * Event type for events returned by libinput_get_event().
  */
 enum libinput_event_type {
-       LIBINPUT_EVENT_ADDED_SEAT = 0,
+       LIBINPUT_EVENT_NONE = 0,
+       LIBINPUT_EVENT_ADDED_SEAT,
        LIBINPUT_EVENT_REMOVED_SEAT,
        LIBINPUT_EVENT_ADDED_DEVICE,
        LIBINPUT_EVENT_REMOVED_DEVICE,