2 * Copyright © 2013 Jonas Ådahl
4 * Permission to use, copy, modify, distribute, and sell this software and
5 * its documentation for any purpose is hereby granted without fee, provided
6 * that the above copyright notice appear in all copies and that both that
7 * copyright notice and this permission notice appear in supporting
8 * documentation, and that the name of the copyright holders not be used in
9 * advertising or publicity pertaining to distribution of the software
10 * without specific, written prior permission. The copyright holders make
11 * no representations about the suitability of this software for any
12 * purpose. It is provided "as is" without express or implied warranty.
14 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
15 * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
16 * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
17 * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
18 * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
19 * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
20 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
29 #include <sys/epoll.h>
34 #include "libinput-private.h"
36 #include "udev-seat.h"
38 enum libinput_event_class {
39 LIBINPUT_EVENT_CLASS_BASE,
40 LIBINPUT_EVENT_CLASS_SEAT,
41 LIBINPUT_EVENT_CLASS_DEVICE,
44 struct libinput_source {
45 libinput_source_dispatch_t dispatch;
51 struct libinput_event {
52 enum libinput_event_type type;
53 union libinput_event_target target;
56 struct libinput_event_added_seat {
57 struct libinput_event base;
58 struct libinput_seat *seat;
61 struct libinput_event_removed_seat {
62 struct libinput_event base;
63 struct libinput_seat *seat;
66 struct libinput_event_added_device {
67 struct libinput_event base;
68 struct libinput_device *device;
71 struct libinput_event_removed_device {
72 struct libinput_event base;
73 struct libinput_device *device;
76 struct libinput_event_device_register_capability {
77 struct libinput_event base;
78 enum libinput_device_capability capability;
81 struct libinput_event_device_unregister_capability {
82 struct libinput_event base;
83 enum libinput_device_capability capability;
86 struct libinput_event_keyboard_key {
87 struct libinput_event base;
90 enum libinput_keyboard_key_state state;
93 struct libinput_event_pointer_motion {
94 struct libinput_event base;
100 struct libinput_event_pointer_motion_absolute {
101 struct libinput_event base;
107 struct libinput_event_pointer_button {
108 struct libinput_event base;
111 enum libinput_pointer_button_state state;
114 struct libinput_event_pointer_axis {
115 struct libinput_event base;
117 enum libinput_pointer_axis axis;
121 struct libinput_event_touch_touch {
122 struct libinput_event base;
127 enum libinput_touch_type touch_type;
131 libinput_post_event(struct libinput *libinput,
132 struct libinput_event *event);
134 LIBINPUT_EXPORT enum libinput_event_type
135 libinput_event_get_type(struct libinput_event *event)
140 LIBINPUT_EXPORT union libinput_event_target
141 libinput_event_get_target(struct libinput_event *event)
143 return event->target;
146 LIBINPUT_EXPORT struct libinput_seat *
147 libinput_event_added_seat_get_seat(struct libinput_event_added_seat *event)
152 LIBINPUT_EXPORT struct libinput_seat *
153 libinput_event_removed_seat_get_seat(struct libinput_event_removed_seat *event)
158 LIBINPUT_EXPORT struct libinput_device *
159 libinput_event_added_device_get_device(
160 struct libinput_event_added_device *event)
162 return event->device;
165 LIBINPUT_EXPORT struct libinput_device *
166 libinput_event_removed_device_get_device(
167 struct libinput_event_removed_device *event)
169 return event->device;
172 LIBINPUT_EXPORT enum libinput_device_capability
173 libinput_event_device_register_capability_get_capability(
174 struct libinput_event_device_register_capability *event)
176 return event->capability;
179 LIBINPUT_EXPORT enum libinput_device_capability
180 libinput_event_device_unregister_capability_get_capability(
181 struct libinput_event_device_unregister_capability *event)
183 return event->capability;
186 LIBINPUT_EXPORT uint32_t
187 libinput_event_keyboard_key_get_time(
188 struct libinput_event_keyboard_key *event)
193 LIBINPUT_EXPORT uint32_t
194 libinput_event_keyboard_key_get_key(
195 struct libinput_event_keyboard_key *event)
200 LIBINPUT_EXPORT enum libinput_keyboard_key_state
201 libinput_event_keyboard_key_get_state(
202 struct libinput_event_keyboard_key *event)
207 LIBINPUT_EXPORT uint32_t
208 libinput_event_pointer_motion_get_time(
209 struct libinput_event_pointer_motion *event)
214 LIBINPUT_EXPORT li_fixed_t
215 libinput_event_pointer_motion_get_dx(
216 struct libinput_event_pointer_motion *event)
221 LIBINPUT_EXPORT li_fixed_t
222 libinput_event_pointer_motion_get_dy(
223 struct libinput_event_pointer_motion *event)
228 LIBINPUT_EXPORT uint32_t
229 libinput_event_pointer_motion_absolute_get_time(
230 struct libinput_event_pointer_motion_absolute *event)
235 LIBINPUT_EXPORT li_fixed_t
236 libinput_event_pointer_motion_absolute_get_x(
237 struct libinput_event_pointer_motion_absolute *event)
242 LIBINPUT_EXPORT li_fixed_t
243 libinput_event_pointer_motion_absolute_get_y(
244 struct libinput_event_pointer_motion_absolute *event)
249 LIBINPUT_EXPORT uint32_t
250 libinput_event_pointer_button_get_time(
251 struct libinput_event_pointer_button *event)
256 LIBINPUT_EXPORT uint32_t
257 libinput_event_pointer_button_get_button(
258 struct libinput_event_pointer_button *event)
260 return event->button;
263 LIBINPUT_EXPORT enum libinput_pointer_button_state
264 libinput_event_pointer_button_get_state(
265 struct libinput_event_pointer_button *event)
270 LIBINPUT_EXPORT uint32_t
271 libinput_event_pointer_axis_get_time(
272 struct libinput_event_pointer_axis *event)
277 LIBINPUT_EXPORT enum libinput_pointer_axis
278 libinput_event_pointer_axis_get_axis(
279 struct libinput_event_pointer_axis *event)
284 LIBINPUT_EXPORT li_fixed_t
285 libinput_event_pointer_axis_get_value(
286 struct libinput_event_pointer_axis *event)
291 LIBINPUT_EXPORT uint32_t
292 libinput_event_touch_touch_get_time(
293 struct libinput_event_touch_touch *event)
298 LIBINPUT_EXPORT uint32_t
299 libinput_event_touch_touch_get_slot(
300 struct libinput_event_touch_touch *event)
305 LIBINPUT_EXPORT li_fixed_t
306 libinput_event_touch_touch_get_x(
307 struct libinput_event_touch_touch *event)
312 LIBINPUT_EXPORT li_fixed_t
313 libinput_event_touch_touch_get_y(
314 struct libinput_event_touch_touch *event)
319 LIBINPUT_EXPORT enum libinput_touch_type
320 libinput_event_touch_touch_get_touch_type(
321 struct libinput_event_touch_touch *event)
323 return event->touch_type;
326 struct libinput_source *
327 libinput_add_fd(struct libinput *libinput,
329 libinput_source_dispatch_t dispatch,
332 struct libinput_source *source;
333 struct epoll_event ep;
335 source = malloc(sizeof *source);
339 source->dispatch = dispatch;
340 source->user_data = user_data;
343 memset(&ep, 0, sizeof ep);
345 ep.data.ptr = source;
347 if (epoll_ctl(libinput->epoll_fd, EPOLL_CTL_ADD, fd, &ep) < 0) {
357 libinput_remove_source(struct libinput *libinput,
358 struct libinput_source *source)
360 epoll_ctl(libinput->epoll_fd, EPOLL_CTL_DEL, source->fd, NULL);
363 list_insert(&libinput->source_destroy_list, &source->link);
367 libinput_init(struct libinput *libinput,
368 const struct libinput_interface *interface,
371 libinput->epoll_fd = epoll_create1(EPOLL_CLOEXEC);;
372 if (libinput->epoll_fd < 0)
375 libinput->interface = interface;
376 libinput->user_data = user_data;
377 list_init(&libinput->source_destroy_list);
378 list_init(&libinput->seat_list);
384 libinput_destroy(struct libinput *libinput)
386 struct libinput_event *event;
388 while ((event = libinput_get_event(libinput)))
390 free(libinput->events);
392 close(libinput->epoll_fd);
396 static enum libinput_event_class
397 libinput_event_get_class(struct libinput_event *event)
399 switch (event->type) {
400 case LIBINPUT_EVENT_ADDED_SEAT:
401 case LIBINPUT_EVENT_REMOVED_SEAT:
402 case LIBINPUT_EVENT_ADDED_DEVICE:
403 case LIBINPUT_EVENT_REMOVED_DEVICE:
404 return LIBINPUT_EVENT_CLASS_BASE;
406 case LIBINPUT_EVENT_DEVICE_REGISTER_CAPABILITY:
407 case LIBINPUT_EVENT_DEVICE_UNREGISTER_CAPABILITY:
408 case LIBINPUT_EVENT_KEYBOARD_KEY:
409 case LIBINPUT_EVENT_POINTER_MOTION:
410 case LIBINPUT_EVENT_POINTER_MOTION_ABSOLUTE:
411 case LIBINPUT_EVENT_POINTER_BUTTON:
412 case LIBINPUT_EVENT_POINTER_AXIS:
413 case LIBINPUT_EVENT_TOUCH_TOUCH:
414 return LIBINPUT_EVENT_CLASS_DEVICE;
417 /* We should never end up here. */
422 libinput_event_destroy(struct libinput_event *event)
424 switch (libinput_event_get_class(event)) {
425 case LIBINPUT_EVENT_CLASS_BASE:
427 case LIBINPUT_EVENT_CLASS_SEAT:
428 libinput_seat_unref(event->target.seat);
430 case LIBINPUT_EVENT_CLASS_DEVICE:
431 libinput_device_unref(event->target.device);
439 open_restricted(struct libinput *libinput,
440 const char *path, int flags)
442 return libinput->interface->open_restricted(path,
444 libinput->user_data);
448 close_restricted(struct libinput *libinput, int fd)
450 return libinput->interface->close_restricted(fd, libinput->user_data);
454 libinput_seat_init(struct libinput_seat *seat,
455 struct libinput *libinput,
459 seat->libinput = libinput;
460 seat->name = strdup(name);
461 list_init(&seat->devices_list);
465 libinput_seat_ref(struct libinput_seat *seat)
471 libinput_seat_unref(struct libinput_seat *seat)
474 if (seat->refcount == 0) {
476 udev_seat_destroy((struct udev_seat *) seat);
481 libinput_seat_set_user_data(struct libinput_seat *seat, void *user_data)
483 seat->user_data = user_data;
486 LIBINPUT_EXPORT void *
487 libinput_seat_get_user_data(struct libinput_seat *seat)
489 return seat->user_data;
492 LIBINPUT_EXPORT const char *
493 libinput_seat_get_name(struct libinput_seat *seat)
499 libinput_device_init(struct libinput_device *device,
500 struct libinput_seat *seat)
503 device->refcount = 1;
507 libinput_device_ref(struct libinput_device *device)
513 libinput_device_unref(struct libinput_device *device)
516 if (device->refcount == 0)
517 evdev_device_destroy((struct evdev_device *) device);
521 libinput_get_fd(struct libinput *libinput)
523 return libinput->epoll_fd;
527 libinput_dispatch(struct libinput *libinput)
529 struct libinput_source *source, *next;
530 struct epoll_event ep[32];
533 count = epoll_wait(libinput->epoll_fd, ep, ARRAY_LENGTH(ep), 0);
537 for (i = 0; i < count; ++i) {
538 source = ep[i].data.ptr;
539 if (source->fd == -1)
542 source->dispatch(source->user_data);
545 list_for_each_safe(source, next, &libinput->source_destroy_list, link)
547 list_init(&libinput->source_destroy_list);
549 return libinput->events_count > 0 ? 0 : -EAGAIN;
553 init_event_base(struct libinput_event *event,
554 enum libinput_event_type type,
555 union libinput_event_target target)
558 event->target = target;
562 post_base_event(struct libinput *libinput,
563 enum libinput_event_type type,
564 struct libinput_event *event)
566 init_event_base(event, type,
567 (union libinput_event_target) { .libinput = libinput });
568 libinput_post_event(libinput, event);
572 post_device_event(struct libinput_device *device,
573 enum libinput_event_type type,
574 struct libinput_event *event)
576 init_event_base(event, type,
577 (union libinput_event_target) { .device = device });
578 libinput_post_event(device->seat->libinput, event);
582 notify_added_seat(struct libinput_seat *seat)
584 struct libinput_event_added_seat *added_seat_event;
586 added_seat_event = malloc(sizeof *added_seat_event);
587 if (!added_seat_event)
590 *added_seat_event = (struct libinput_event_added_seat) {
594 post_base_event(seat->libinput,
595 LIBINPUT_EVENT_ADDED_SEAT,
596 &added_seat_event->base);
600 notify_removed_seat(struct libinput_seat *seat)
602 struct libinput_event_removed_seat *removed_seat_event;
604 removed_seat_event = malloc(sizeof *removed_seat_event);
605 if (!removed_seat_event)
608 *removed_seat_event = (struct libinput_event_removed_seat) {
612 post_base_event(seat->libinput,
613 LIBINPUT_EVENT_REMOVED_SEAT,
614 &removed_seat_event->base);
618 notify_added_device(struct libinput_device *device)
620 struct libinput_event_added_device *added_device_event;
622 added_device_event = malloc(sizeof *added_device_event);
623 if (!added_device_event)
626 *added_device_event = (struct libinput_event_added_device) {
630 post_base_event(device->seat->libinput,
631 LIBINPUT_EVENT_ADDED_DEVICE,
632 &added_device_event->base);
636 notify_removed_device(struct libinput_device *device)
638 struct libinput_event_removed_device *removed_device_event;
640 removed_device_event = malloc(sizeof *removed_device_event);
641 if (!removed_device_event)
644 *removed_device_event = (struct libinput_event_removed_device) {
648 post_base_event(device->seat->libinput,
649 LIBINPUT_EVENT_REMOVED_DEVICE,
650 &removed_device_event->base);
654 device_register_capability(struct libinput_device *device,
655 enum libinput_device_capability capability)
657 struct libinput_event_device_register_capability *capability_event;
659 capability_event = malloc(sizeof *capability_event);
661 *capability_event = (struct libinput_event_device_register_capability) {
662 .capability = capability,
665 post_device_event(device,
666 LIBINPUT_EVENT_DEVICE_REGISTER_CAPABILITY,
667 &capability_event->base);
671 device_unregister_capability(struct libinput_device *device,
672 enum libinput_device_capability capability)
674 struct libinput_event_device_unregister_capability *capability_event;
676 capability_event = malloc(sizeof *capability_event);
678 *capability_event = (struct libinput_event_device_unregister_capability) {
679 .capability = capability,
682 post_device_event(device,
683 LIBINPUT_EVENT_DEVICE_UNREGISTER_CAPABILITY,
684 &capability_event->base);
688 keyboard_notify_key(struct libinput_device *device,
691 enum libinput_keyboard_key_state state)
693 struct libinput_event_keyboard_key *key_event;
695 key_event = malloc(sizeof *key_event);
699 *key_event = (struct libinput_event_keyboard_key) {
705 post_device_event(device,
706 LIBINPUT_EVENT_KEYBOARD_KEY,
711 pointer_notify_motion(struct libinput_device *device,
716 struct libinput_event_pointer_motion *motion_event;
718 motion_event = malloc(sizeof *motion_event);
722 *motion_event = (struct libinput_event_pointer_motion) {
728 post_device_event(device,
729 LIBINPUT_EVENT_POINTER_MOTION,
730 &motion_event->base);
734 pointer_notify_motion_absolute(struct libinput_device *device,
739 struct libinput_event_pointer_motion_absolute *motion_absolute_event;
741 motion_absolute_event = malloc(sizeof *motion_absolute_event);
742 if (!motion_absolute_event)
745 *motion_absolute_event = (struct libinput_event_pointer_motion_absolute) {
751 post_device_event(device,
752 LIBINPUT_EVENT_POINTER_MOTION_ABSOLUTE,
753 &motion_absolute_event->base);
757 pointer_notify_button(struct libinput_device *device,
760 enum libinput_pointer_button_state state)
762 struct libinput_event_pointer_button *button_event;
764 button_event = malloc(sizeof *button_event);
768 *button_event = (struct libinput_event_pointer_button) {
774 post_device_event(device,
775 LIBINPUT_EVENT_POINTER_BUTTON,
776 &button_event->base);
780 pointer_notify_axis(struct libinput_device *device,
782 enum libinput_pointer_axis axis,
785 struct libinput_event_pointer_axis *axis_event;
787 axis_event = malloc(sizeof *axis_event);
791 *axis_event = (struct libinput_event_pointer_axis) {
797 post_device_event(device,
798 LIBINPUT_EVENT_POINTER_AXIS,
803 touch_notify_touch(struct libinput_device *device,
808 enum libinput_touch_type touch_type)
810 struct libinput_event_touch_touch *touch_event;
812 touch_event = malloc(sizeof *touch_event);
816 *touch_event = (struct libinput_event_touch_touch) {
821 .touch_type = touch_type,
824 post_device_event(device,
825 LIBINPUT_EVENT_TOUCH_TOUCH,
830 libinput_post_event(struct libinput *libinput,
831 struct libinput_event *event)
833 struct libinput_event **events = libinput->events;
834 size_t events_len = libinput->events_len;
835 size_t events_count = libinput->events_count;
840 if (events_count > events_len) {
845 events = realloc(events, events_len * sizeof *events);
847 fprintf(stderr, "Failed to reallocate event ring "
852 if (libinput->events_count > 0 && libinput->events_in == 0) {
853 libinput->events_in = libinput->events_len;
854 } else if (libinput->events_count > 0 &&
855 libinput->events_out >= libinput->events_in) {
856 move_len = libinput->events_len - libinput->events_out;
857 new_out = events_len - move_len;
858 memmove(events + new_out,
859 libinput->events + libinput->events_out,
860 move_len * sizeof *events);
861 libinput->events_out = new_out;
864 libinput->events = events;
865 libinput->events_len = events_len;
868 switch (libinput_event_get_class(event)) {
869 case LIBINPUT_EVENT_CLASS_BASE:
871 case LIBINPUT_EVENT_CLASS_SEAT:
872 libinput_seat_ref(event->target.seat);
874 case LIBINPUT_EVENT_CLASS_DEVICE:
875 libinput_device_ref(event->target.device);
879 libinput->events_count = events_count;
880 events[libinput->events_in] = event;
881 libinput->events_in = (libinput->events_in + 1) % libinput->events_len;
884 LIBINPUT_EXPORT struct libinput_event *
885 libinput_get_event(struct libinput *libinput)
887 struct libinput_event *event;
889 if (libinput->events_count == 0)
892 event = libinput->events[libinput->events_out];
893 libinput->events_out =
894 (libinput->events_out + 1) % libinput->events_len;
895 libinput->events_count--;
900 LIBINPUT_EXPORT void *
901 libinput_get_user_data(struct libinput *libinput)
903 return libinput->user_data;
907 libinput_resume(struct libinput *libinput)
909 return udev_input_enable((struct udev_input *) libinput);
913 libinput_suspend(struct libinput *libinput)
915 udev_input_disable((struct udev_input *) libinput);
919 libinput_device_set_user_data(struct libinput_device *device, void *user_data)
921 device->user_data = user_data;
924 LIBINPUT_EXPORT void *
925 libinput_device_get_user_data(struct libinput_device *device)
927 return device->user_data;
930 LIBINPUT_EXPORT const char *
931 libinput_device_get_output_name(struct libinput_device *device)
933 return evdev_device_get_output((struct evdev_device *) device);
936 LIBINPUT_EXPORT struct libinput_seat *
937 libinput_device_get_seat(struct libinput_device *device)
943 libinput_device_led_update(struct libinput_device *device,
944 enum libinput_led leds)
946 evdev_device_led_update((struct evdev_device *) device, leds);
950 libinput_device_get_keys(struct libinput_device *device,
951 char *keys, size_t size)
953 return evdev_device_get_keys((struct evdev_device *) device,
959 libinput_device_calibrate(struct libinput_device *device,
960 float calibration[6])
962 evdev_device_calibrate((struct evdev_device *) device, calibration);
966 libinput_device_has_capability(struct libinput_device *device,
967 enum libinput_device_capability capability)
969 return evdev_device_has_capability((struct evdev_device *) device,