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->events_len = 4;
376 libinput->events = zalloc(libinput->events_len * sizeof(*libinput->events));
377 if (!libinput->events) {
378 close(libinput->epoll_fd);
382 libinput->interface = interface;
383 libinput->user_data = user_data;
384 list_init(&libinput->source_destroy_list);
385 list_init(&libinput->seat_list);
391 libinput_device_destroy(struct libinput_device *device);
394 libinput_seat_destroy(struct libinput_seat *seat);
397 libinput_destroy(struct libinput *libinput)
399 struct libinput_event *event;
400 struct libinput_device *device, *next_device;
401 struct libinput_seat *seat, *next_seat;
403 while ((event = libinput_get_event(libinput)))
404 libinput_event_destroy(event);
405 free(libinput->events);
407 list_for_each_safe(seat, next_seat, &libinput->seat_list, link) {
408 list_for_each_safe(device, next_device,
411 libinput_device_destroy(device);
413 libinput_seat_destroy(seat);
416 close(libinput->epoll_fd);
420 static enum libinput_event_class
421 libinput_event_get_class(struct libinput_event *event)
423 switch (event->type) {
424 case LIBINPUT_EVENT_ADDED_SEAT:
425 case LIBINPUT_EVENT_REMOVED_SEAT:
426 case LIBINPUT_EVENT_ADDED_DEVICE:
427 case LIBINPUT_EVENT_REMOVED_DEVICE:
428 return LIBINPUT_EVENT_CLASS_BASE;
430 case LIBINPUT_EVENT_DEVICE_REGISTER_CAPABILITY:
431 case LIBINPUT_EVENT_DEVICE_UNREGISTER_CAPABILITY:
432 case LIBINPUT_EVENT_KEYBOARD_KEY:
433 case LIBINPUT_EVENT_POINTER_MOTION:
434 case LIBINPUT_EVENT_POINTER_MOTION_ABSOLUTE:
435 case LIBINPUT_EVENT_POINTER_BUTTON:
436 case LIBINPUT_EVENT_POINTER_AXIS:
437 case LIBINPUT_EVENT_TOUCH_TOUCH:
438 return LIBINPUT_EVENT_CLASS_DEVICE;
441 /* We should never end up here. */
446 libinput_event_destroy(struct libinput_event *event)
451 switch (libinput_event_get_class(event)) {
452 case LIBINPUT_EVENT_CLASS_BASE:
454 case LIBINPUT_EVENT_CLASS_SEAT:
455 libinput_seat_unref(event->target.seat);
457 case LIBINPUT_EVENT_CLASS_DEVICE:
458 libinput_device_unref(event->target.device);
466 open_restricted(struct libinput *libinput,
467 const char *path, int flags)
469 return libinput->interface->open_restricted(path,
471 libinput->user_data);
475 close_restricted(struct libinput *libinput, int fd)
477 return libinput->interface->close_restricted(fd, libinput->user_data);
481 libinput_seat_init(struct libinput_seat *seat,
482 struct libinput *libinput,
486 seat->libinput = libinput;
487 seat->name = strdup(name);
488 list_init(&seat->devices_list);
492 libinput_seat_ref(struct libinput_seat *seat)
498 libinput_seat_destroy(struct libinput_seat *seat)
501 udev_seat_destroy((struct udev_seat *) seat);
505 libinput_seat_unref(struct libinput_seat *seat)
507 assert(seat->refcount > 0);
509 if (seat->refcount == 0)
510 libinput_seat_destroy(seat);
514 libinput_seat_set_user_data(struct libinput_seat *seat, void *user_data)
516 seat->user_data = user_data;
519 LIBINPUT_EXPORT void *
520 libinput_seat_get_user_data(struct libinput_seat *seat)
522 return seat->user_data;
525 LIBINPUT_EXPORT const char *
526 libinput_seat_get_name(struct libinput_seat *seat)
532 libinput_device_init(struct libinput_device *device,
533 struct libinput_seat *seat)
536 device->refcount = 1;
540 libinput_device_ref(struct libinput_device *device)
546 libinput_device_destroy(struct libinput_device *device)
548 evdev_device_destroy((struct evdev_device *) device);
552 libinput_device_unref(struct libinput_device *device)
554 assert(device->refcount > 0);
556 if (device->refcount == 0)
557 libinput_device_destroy(device);
561 libinput_get_fd(struct libinput *libinput)
563 return libinput->epoll_fd;
567 libinput_dispatch(struct libinput *libinput)
569 struct libinput_source *source, *next;
570 struct epoll_event ep[32];
573 count = epoll_wait(libinput->epoll_fd, ep, ARRAY_LENGTH(ep), 0);
577 for (i = 0; i < count; ++i) {
578 source = ep[i].data.ptr;
579 if (source->fd == -1)
582 source->dispatch(source->user_data);
585 list_for_each_safe(source, next, &libinput->source_destroy_list, link)
587 list_init(&libinput->source_destroy_list);
593 init_event_base(struct libinput_event *event,
594 enum libinput_event_type type,
595 union libinput_event_target target)
598 event->target = target;
602 post_base_event(struct libinput *libinput,
603 enum libinput_event_type type,
604 struct libinput_event *event)
606 init_event_base(event, type,
607 (union libinput_event_target) { .libinput = libinput });
608 libinput_post_event(libinput, event);
612 post_device_event(struct libinput_device *device,
613 enum libinput_event_type type,
614 struct libinput_event *event)
616 init_event_base(event, type,
617 (union libinput_event_target) { .device = device });
618 libinput_post_event(device->seat->libinput, event);
622 notify_added_seat(struct libinput_seat *seat)
624 struct libinput_event_added_seat *added_seat_event;
626 added_seat_event = malloc(sizeof *added_seat_event);
627 if (!added_seat_event)
630 *added_seat_event = (struct libinput_event_added_seat) {
634 post_base_event(seat->libinput,
635 LIBINPUT_EVENT_ADDED_SEAT,
636 &added_seat_event->base);
640 notify_removed_seat(struct libinput_seat *seat)
642 struct libinput_event_removed_seat *removed_seat_event;
644 removed_seat_event = malloc(sizeof *removed_seat_event);
645 if (!removed_seat_event)
648 *removed_seat_event = (struct libinput_event_removed_seat) {
652 post_base_event(seat->libinput,
653 LIBINPUT_EVENT_REMOVED_SEAT,
654 &removed_seat_event->base);
658 notify_added_device(struct libinput_device *device)
660 struct libinput_event_added_device *added_device_event;
662 added_device_event = malloc(sizeof *added_device_event);
663 if (!added_device_event)
666 *added_device_event = (struct libinput_event_added_device) {
670 post_base_event(device->seat->libinput,
671 LIBINPUT_EVENT_ADDED_DEVICE,
672 &added_device_event->base);
676 notify_removed_device(struct libinput_device *device)
678 struct libinput_event_removed_device *removed_device_event;
680 removed_device_event = malloc(sizeof *removed_device_event);
681 if (!removed_device_event)
684 *removed_device_event = (struct libinput_event_removed_device) {
688 post_base_event(device->seat->libinput,
689 LIBINPUT_EVENT_REMOVED_DEVICE,
690 &removed_device_event->base);
694 device_register_capability(struct libinput_device *device,
695 enum libinput_device_capability capability)
697 struct libinput_event_device_register_capability *capability_event;
699 capability_event = malloc(sizeof *capability_event);
701 *capability_event = (struct libinput_event_device_register_capability) {
702 .capability = capability,
705 post_device_event(device,
706 LIBINPUT_EVENT_DEVICE_REGISTER_CAPABILITY,
707 &capability_event->base);
711 device_unregister_capability(struct libinput_device *device,
712 enum libinput_device_capability capability)
714 struct libinput_event_device_unregister_capability *capability_event;
716 capability_event = malloc(sizeof *capability_event);
718 *capability_event = (struct libinput_event_device_unregister_capability) {
719 .capability = capability,
722 post_device_event(device,
723 LIBINPUT_EVENT_DEVICE_UNREGISTER_CAPABILITY,
724 &capability_event->base);
728 keyboard_notify_key(struct libinput_device *device,
731 enum libinput_keyboard_key_state state)
733 struct libinput_event_keyboard_key *key_event;
735 key_event = malloc(sizeof *key_event);
739 *key_event = (struct libinput_event_keyboard_key) {
745 post_device_event(device,
746 LIBINPUT_EVENT_KEYBOARD_KEY,
751 pointer_notify_motion(struct libinput_device *device,
756 struct libinput_event_pointer_motion *motion_event;
758 motion_event = malloc(sizeof *motion_event);
762 *motion_event = (struct libinput_event_pointer_motion) {
768 post_device_event(device,
769 LIBINPUT_EVENT_POINTER_MOTION,
770 &motion_event->base);
774 pointer_notify_motion_absolute(struct libinput_device *device,
779 struct libinput_event_pointer_motion_absolute *motion_absolute_event;
781 motion_absolute_event = malloc(sizeof *motion_absolute_event);
782 if (!motion_absolute_event)
785 *motion_absolute_event = (struct libinput_event_pointer_motion_absolute) {
791 post_device_event(device,
792 LIBINPUT_EVENT_POINTER_MOTION_ABSOLUTE,
793 &motion_absolute_event->base);
797 pointer_notify_button(struct libinput_device *device,
800 enum libinput_pointer_button_state state)
802 struct libinput_event_pointer_button *button_event;
804 button_event = malloc(sizeof *button_event);
808 *button_event = (struct libinput_event_pointer_button) {
814 post_device_event(device,
815 LIBINPUT_EVENT_POINTER_BUTTON,
816 &button_event->base);
820 pointer_notify_axis(struct libinput_device *device,
822 enum libinput_pointer_axis axis,
825 struct libinput_event_pointer_axis *axis_event;
827 axis_event = malloc(sizeof *axis_event);
831 *axis_event = (struct libinput_event_pointer_axis) {
837 post_device_event(device,
838 LIBINPUT_EVENT_POINTER_AXIS,
843 touch_notify_touch(struct libinput_device *device,
848 enum libinput_touch_type touch_type)
850 struct libinput_event_touch_touch *touch_event;
852 touch_event = malloc(sizeof *touch_event);
856 *touch_event = (struct libinput_event_touch_touch) {
861 .touch_type = touch_type,
864 post_device_event(device,
865 LIBINPUT_EVENT_TOUCH_TOUCH,
870 libinput_post_event(struct libinput *libinput,
871 struct libinput_event *event)
873 struct libinput_event **events = libinput->events;
874 size_t events_len = libinput->events_len;
875 size_t events_count = libinput->events_count;
880 if (events_count > events_len) {
882 events = realloc(events, events_len * sizeof *events);
884 fprintf(stderr, "Failed to reallocate event ring "
889 if (libinput->events_count > 0 && libinput->events_in == 0) {
890 libinput->events_in = libinput->events_len;
891 } else if (libinput->events_count > 0 &&
892 libinput->events_out >= libinput->events_in) {
893 move_len = libinput->events_len - libinput->events_out;
894 new_out = events_len - move_len;
895 memmove(events + new_out,
896 events + libinput->events_out,
897 move_len * sizeof *events);
898 libinput->events_out = new_out;
901 libinput->events = events;
902 libinput->events_len = events_len;
905 switch (libinput_event_get_class(event)) {
906 case LIBINPUT_EVENT_CLASS_BASE:
908 case LIBINPUT_EVENT_CLASS_SEAT:
909 libinput_seat_ref(event->target.seat);
911 case LIBINPUT_EVENT_CLASS_DEVICE:
912 libinput_device_ref(event->target.device);
916 libinput->events_count = events_count;
917 events[libinput->events_in] = event;
918 libinput->events_in = (libinput->events_in + 1) % libinput->events_len;
921 LIBINPUT_EXPORT struct libinput_event *
922 libinput_get_event(struct libinput *libinput)
924 struct libinput_event *event;
926 if (libinput->events_count == 0)
929 event = libinput->events[libinput->events_out];
930 libinput->events_out =
931 (libinput->events_out + 1) % libinput->events_len;
932 libinput->events_count--;
937 LIBINPUT_EXPORT void *
938 libinput_get_user_data(struct libinput *libinput)
940 return libinput->user_data;
944 libinput_resume(struct libinput *libinput)
946 return udev_input_enable((struct udev_input *) libinput);
950 libinput_suspend(struct libinput *libinput)
952 udev_input_disable((struct udev_input *) libinput);
956 libinput_device_set_user_data(struct libinput_device *device, void *user_data)
958 device->user_data = user_data;
961 LIBINPUT_EXPORT void *
962 libinput_device_get_user_data(struct libinput_device *device)
964 return device->user_data;
967 LIBINPUT_EXPORT const char *
968 libinput_device_get_sysname(struct libinput_device *device)
970 return evdev_device_get_sysname((struct evdev_device *) device);
973 LIBINPUT_EXPORT const char *
974 libinput_device_get_output_name(struct libinput_device *device)
976 return evdev_device_get_output((struct evdev_device *) device);
979 LIBINPUT_EXPORT struct libinput_seat *
980 libinput_device_get_seat(struct libinput_device *device)
986 libinput_device_led_update(struct libinput_device *device,
987 enum libinput_led leds)
989 evdev_device_led_update((struct evdev_device *) device, leds);
993 libinput_device_get_keys(struct libinput_device *device,
994 char *keys, size_t size)
996 return evdev_device_get_keys((struct evdev_device *) device,
1001 LIBINPUT_EXPORT void
1002 libinput_device_calibrate(struct libinput_device *device,
1003 float calibration[6])
1005 evdev_device_calibrate((struct evdev_device *) device, calibration);
1009 libinput_device_has_capability(struct libinput_device *device,
1010 enum libinput_device_capability capability)
1012 return evdev_device_has_capability((struct evdev_device *) device,