2 * Copyright © 2010 Intel Corporation
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.
26 #include <linux/input.h>
31 #include "compositor.h"
33 #include "evdev-private.h"
34 #include "launcher-util.h"
37 evdev_process_key(struct evdev_input_device *device,
38 struct input_event *e, int time)
48 case BTN_TOOL_AIRBRUSH:
52 if (device->is_touchpad)
54 device->abs.reset_x = 1;
55 device->abs.reset_y = 1;
59 /* Multitouch touchscreen devices might not send individually
60 * button events each time a new finger is down. So we don't
61 * send notification for such devices and we solve the button
62 * case emulating on compositor side. */
66 /* Treat BTN_TOUCH from devices that only have BTN_TOUCH as
69 /* Intentional fallthrough! */
78 notify_button(&device->master->base.seat,
79 time, e->code, e->value);
83 notify_key(&device->master->base.seat,
84 time, e->code, e->value);
90 evdev_process_touch(struct evdev_input_device *device,
91 struct input_event *e)
93 const int screen_width = device->output->current->width;
94 const int screen_height = device->output->current->height;
98 device->mt.slot = e->value;
100 case ABS_MT_TRACKING_ID:
102 device->type |= EVDEV_ABSOLUTE_MT_DOWN;
104 device->type |= EVDEV_ABSOLUTE_MT_UP;
106 case ABS_MT_POSITION_X:
107 device->mt.x[device->mt.slot] =
108 (e->value - device->abs.min_x) * screen_width /
109 (device->abs.max_x - device->abs.min_x) +
111 device->type |= EVDEV_ABSOLUTE_MT_MOTION;
113 case ABS_MT_POSITION_Y:
114 device->mt.y[device->mt.slot] =
115 (e->value - device->abs.min_y) * screen_height /
116 (device->abs.max_y - device->abs.min_y) +
118 device->type |= EVDEV_ABSOLUTE_MT_MOTION;
124 evdev_process_absolute_motion(struct evdev_input_device *device,
125 struct input_event *e)
127 const int screen_width = device->output->current->width;
128 const int screen_height = device->output->current->height;
133 (e->value - device->abs.min_x) * screen_width /
134 (device->abs.max_x - device->abs.min_x) +
136 device->type |= EVDEV_ABSOLUTE_MOTION;
140 (e->value - device->abs.min_y) * screen_height /
141 (device->abs.max_y - device->abs.min_y) +
143 device->type |= EVDEV_ABSOLUTE_MOTION;
149 evdev_process_absolute_motion_touchpad(struct evdev_input_device *device,
150 struct input_event *e)
152 /* FIXME: Make this configurable somehow. */
153 const int touchpad_speed = 700;
158 e->value -= device->abs.min_x;
159 if (device->abs.reset_x)
160 device->abs.reset_x = 0;
163 (e->value - device->abs.old_x) *
165 (device->abs.max_x - device->abs.min_x);
166 device->rel.dx = wl_fixed_from_int(dx);
168 device->abs.old_x = e->value;
169 device->type |= EVDEV_RELATIVE_MOTION;
172 e->value -= device->abs.min_y;
173 if (device->abs.reset_y)
174 device->abs.reset_y = 0;
177 (e->value - device->abs.old_y) *
179 /* maybe use x size here to have the same scale? */
180 (device->abs.max_y - device->abs.min_y);
181 device->rel.dy = wl_fixed_from_int(dy);
183 device->abs.old_y = e->value;
184 device->type |= EVDEV_RELATIVE_MOTION;
190 evdev_process_relative(struct evdev_input_device *device,
191 struct input_event *e, uint32_t time)
195 device->rel.dx += wl_fixed_from_int(e->value);
196 device->type |= EVDEV_RELATIVE_MOTION;
199 device->rel.dy += wl_fixed_from_int(e->value);
200 device->type |= EVDEV_RELATIVE_MOTION;
203 notify_axis(&device->master->base.seat,
205 WL_POINTER_AXIS_VERTICAL_SCROLL, e->value);
208 notify_axis(&device->master->base.seat,
210 WL_POINTER_AXIS_HORIZONTAL_SCROLL, e->value);
216 evdev_process_absolute(struct evdev_input_device *device,
217 struct input_event *e)
219 if (device->is_touchpad) {
220 evdev_process_absolute_motion_touchpad(device, e);
221 } else if (device->is_mt) {
222 evdev_process_touch(device, e);
224 evdev_process_absolute_motion(device, e);
229 is_motion_event(struct input_event *e)
242 case ABS_MT_POSITION_X:
243 case ABS_MT_POSITION_Y:
252 evdev_flush_motion(struct evdev_input_device *device, uint32_t time)
254 struct weston_seat *master = &device->master->base;
259 if (device->type & EVDEV_RELATIVE_MOTION) {
260 notify_motion(&master->seat, time,
261 master->seat.pointer->x + device->rel.dx,
262 master->seat.pointer->y + device->rel.dy);
263 device->type &= ~EVDEV_RELATIVE_MOTION;
267 if (device->type & EVDEV_ABSOLUTE_MT_DOWN) {
268 notify_touch(&master->seat, time,
270 wl_fixed_from_int(device->mt.x[device->mt.slot]),
271 wl_fixed_from_int(device->mt.y[device->mt.slot]),
273 device->type &= ~EVDEV_ABSOLUTE_MT_DOWN;
274 device->type &= ~EVDEV_ABSOLUTE_MT_MOTION;
276 if (device->type & EVDEV_ABSOLUTE_MT_MOTION) {
277 notify_touch(&master->seat, time,
279 wl_fixed_from_int(device->mt.x[device->mt.slot]),
280 wl_fixed_from_int(device->mt.y[device->mt.slot]),
282 device->type &= ~EVDEV_ABSOLUTE_MT_DOWN;
283 device->type &= ~EVDEV_ABSOLUTE_MT_MOTION;
285 if (device->type & EVDEV_ABSOLUTE_MT_UP) {
286 notify_touch(&master->seat, time, device->mt.slot, 0, 0,
288 device->type &= ~EVDEV_ABSOLUTE_MT_UP;
290 if (device->type & EVDEV_ABSOLUTE_MOTION) {
291 notify_motion(&master->seat, time,
292 wl_fixed_from_int(device->abs.x),
293 wl_fixed_from_int(device->abs.y));
294 device->type &= ~EVDEV_ABSOLUTE_MOTION;
299 fallback_process(struct evdev_dispatch *dispatch,
300 struct evdev_input_device *device,
301 struct input_event *event,
304 switch (event->type) {
306 evdev_process_relative(device, event, time);
309 evdev_process_absolute(device, event);
312 evdev_process_key(device, event, time);
318 fallback_destroy(struct evdev_dispatch *dispatch)
323 struct evdev_dispatch_interface fallback_interface = {
328 static struct evdev_dispatch *
329 fallback_dispatch_create(void)
331 struct evdev_dispatch *dispatch = malloc(sizeof *dispatch);
332 if (dispatch == NULL)
335 dispatch->interface = &fallback_interface;
341 evdev_process_events(struct evdev_input_device *device,
342 struct input_event *ev, int count)
344 struct evdev_dispatch *dispatch = device->dispatch;
345 struct input_event *e, *end;
352 for (e = ev; e < end; e++) {
353 time = e->time.tv_sec * 1000 + e->time.tv_usec / 1000;
355 /* we try to minimize the amount of notifications to be
356 * forwarded to the compositor, so we accumulate motion
357 * events and send as a bunch */
358 if (!is_motion_event(e))
359 evdev_flush_motion(device, time);
361 dispatch->interface->process(dispatch, device, e, time);
364 evdev_flush_motion(device, time);
368 evdev_input_device_data(int fd, uint32_t mask, void *data)
370 struct weston_compositor *ec;
371 struct evdev_input_device *device = data;
372 struct input_event ev[32];
375 ec = device->master->base.compositor;
379 /* If the compositor is repainting, this function is called only once
380 * per frame and we have to process all the events available on the
381 * fd, otherwise there will be input lag. */
384 len = mtdev_get(device->mtdev, fd, ev,
386 sizeof (struct input_event);
388 len = read(fd, &ev, sizeof ev);
390 if (len < 0 || len % sizeof ev[0] != 0) {
391 /* FIXME: call device_removed when errno is ENODEV. */
395 evdev_process_events(device, ev, len / sizeof ev[0]);
403 evdev_configure_device(struct evdev_input_device *device)
405 struct input_absinfo absinfo;
406 unsigned long ev_bits[NBITS(EV_MAX)];
407 unsigned long abs_bits[NBITS(ABS_MAX)];
408 unsigned long key_bits[NBITS(KEY_MAX)];
409 int has_key, has_abs;
414 ioctl(device->fd, EVIOCGBIT(0, sizeof(ev_bits)), ev_bits);
415 if (TEST_BIT(ev_bits, EV_ABS)) {
418 ioctl(device->fd, EVIOCGBIT(EV_ABS, sizeof(abs_bits)),
420 if (TEST_BIT(abs_bits, ABS_X)) {
421 ioctl(device->fd, EVIOCGABS(ABS_X), &absinfo);
422 device->abs.min_x = absinfo.minimum;
423 device->abs.max_x = absinfo.maximum;
425 if (TEST_BIT(abs_bits, ABS_Y)) {
426 ioctl(device->fd, EVIOCGABS(ABS_Y), &absinfo);
427 device->abs.min_y = absinfo.minimum;
428 device->abs.max_y = absinfo.maximum;
430 if (TEST_BIT(abs_bits, ABS_MT_SLOT)) {
435 if (TEST_BIT(ev_bits, EV_KEY)) {
437 ioctl(device->fd, EVIOCGBIT(EV_KEY, sizeof(key_bits)),
439 if (TEST_BIT(key_bits, BTN_TOOL_FINGER) &&
440 !TEST_BIT(key_bits, BTN_TOOL_PEN))
441 device->is_touchpad = 1;
444 /* This rule tries to catch accelerometer devices and opt out. We may
445 * want to adjust the protocol later adding a proper event for dealing
446 * with accelerometers and implement here accordingly */
447 if (has_abs && !has_key)
453 static struct evdev_input_device *
454 evdev_input_device_create(struct evdev_seat *master,
455 struct wl_display *display, const char *path)
457 struct evdev_input_device *device;
458 struct weston_compositor *ec;
460 device = malloc(sizeof *device);
464 ec = master->base.compositor;
466 container_of(ec->output_list.next, struct weston_output, link);
468 device->master = master;
469 device->is_touchpad = 0;
471 device->mtdev = NULL;
472 device->devnode = strdup(path);
473 device->mt.slot = -1;
476 device->dispatch = NULL;
478 /* Use non-blocking mode so that we can loop on read on
479 * evdev_input_device_data() until all events on the fd are
480 * read. mtdev_get() also expects this. */
481 device->fd = weston_launcher_open(ec, path, O_RDONLY | O_NONBLOCK);
485 if (evdev_configure_device(device) == -1)
488 /* If the dispatch was not set up use the fallback. */
489 if (device->dispatch == NULL)
490 device->dispatch = fallback_dispatch_create();
491 if (device->dispatch == NULL)
496 device->mtdev = mtdev_new_open(device->fd);
498 fprintf(stderr, "mtdev failed to open for %s\n", path);
501 device->source = wl_event_loop_add_fd(ec->input_loop, device->fd,
503 evdev_input_device_data, device);
504 if (device->source == NULL)
507 wl_list_insert(master->devices_list.prev, &device->link);
512 device->dispatch->interface->destroy(device->dispatch);
516 free(device->devnode);
521 static const char default_seat[] = "seat0";
524 device_added(struct udev_device *udev_device, struct evdev_seat *master)
526 struct weston_compositor *c;
528 const char *device_seat;
530 device_seat = udev_device_get_property_value(udev_device, "ID_SEAT");
532 device_seat = default_seat;
534 if (strcmp(device_seat, master->seat_id))
537 c = master->base.compositor;
538 devnode = udev_device_get_devnode(udev_device);
539 evdev_input_device_create(master, c->wl_display, devnode);
543 device_removed(struct evdev_input_device *device)
545 struct evdev_dispatch *dispatch;
547 dispatch = device->dispatch;
549 dispatch->interface->destroy(dispatch);
551 wl_event_source_remove(device->source);
552 wl_list_remove(&device->link);
554 mtdev_close_delete(device->mtdev);
556 free(device->devnode);
561 evdev_notify_keyboard_focus(struct evdev_seat *seat)
563 struct evdev_input_device *device;
564 struct wl_array keys;
566 char evdev_keys[(KEY_CNT + 7) / 8], all_keys[(KEY_CNT + 7) / 8];
570 memset(all_keys, 0, sizeof all_keys);
571 wl_list_for_each(device, &seat->devices_list, link) {
572 memset(evdev_keys, 0, sizeof evdev_keys);
573 ret = ioctl(device->fd,
574 EVIOCGKEY(sizeof evdev_keys), evdev_keys);
576 fprintf(stderr, "failed to get keys for device %s\n",
580 for (i = 0; i < ARRAY_LENGTH(evdev_keys); i++)
581 all_keys[i] |= evdev_keys[i];
584 wl_array_init(&keys);
585 for (i = 0; i < KEY_CNT; i++) {
586 set = all_keys[i >> 3] & (1 << (i & 7));
588 k = wl_array_add(&keys, sizeof *k);
593 notify_keyboard_focus(&seat->base.seat, &keys);
595 wl_array_release(&keys);
599 evdev_add_devices(struct udev *udev, struct weston_seat *seat_base)
601 struct evdev_seat *seat = (struct evdev_seat *) seat_base;
602 struct udev_enumerate *e;
603 struct udev_list_entry *entry;
604 struct udev_device *device;
605 const char *path, *sysname;
607 e = udev_enumerate_new(udev);
608 udev_enumerate_add_match_subsystem(e, "input");
609 udev_enumerate_scan_devices(e);
610 udev_list_entry_foreach(entry, udev_enumerate_get_list_entry(e)) {
611 path = udev_list_entry_get_name(entry);
612 device = udev_device_new_from_syspath(udev, path);
614 sysname = udev_device_get_sysname(device);
615 if (strncmp("event", sysname, 5) != 0) {
616 udev_device_unref(device);
620 device_added(device, seat);
622 udev_device_unref(device);
624 udev_enumerate_unref(e);
626 evdev_notify_keyboard_focus(seat);
628 if (wl_list_empty(&seat->devices_list)) {
630 "warning: no input devices on entering Weston. "
632 "\t- no permissions to read /dev/input/event*\n"
633 "\t- seats misconfigured "
634 "(Weston backend option 'seat', "
635 "udev device property ID_SEAT)\n");
640 evdev_udev_handler(int fd, uint32_t mask, void *data)
642 struct evdev_seat *master = data;
643 struct udev_device *udev_device;
644 struct evdev_input_device *device, *next;
648 udev_device = udev_monitor_receive_device(master->udev_monitor);
652 action = udev_device_get_action(udev_device);
654 if (strncmp("event", udev_device_get_sysname(udev_device), 5) != 0)
657 if (!strcmp(action, "add")) {
658 device_added(udev_device, master);
660 else if (!strcmp(action, "remove")) {
661 devnode = udev_device_get_devnode(udev_device);
662 wl_list_for_each_safe(device, next,
663 &master->devices_list, link)
664 if (!strcmp(device->devnode, devnode)) {
665 device_removed(device);
670 udev_device_unref(udev_device);
676 evdev_enable_udev_monitor(struct udev *udev, struct weston_seat *seat_base)
678 struct evdev_seat *master = (struct evdev_seat *) seat_base;
679 struct wl_event_loop *loop;
680 struct weston_compositor *c = master->base.compositor;
683 master->udev_monitor = udev_monitor_new_from_netlink(udev, "udev");
684 if (!master->udev_monitor) {
685 fprintf(stderr, "udev: failed to create the udev monitor\n");
689 udev_monitor_filter_add_match_subsystem_devtype(master->udev_monitor,
692 if (udev_monitor_enable_receiving(master->udev_monitor)) {
693 fprintf(stderr, "udev: failed to bind the udev monitor\n");
694 udev_monitor_unref(master->udev_monitor);
698 loop = wl_display_get_event_loop(c->wl_display);
699 fd = udev_monitor_get_fd(master->udev_monitor);
700 master->udev_monitor_source =
701 wl_event_loop_add_fd(loop, fd, WL_EVENT_READABLE,
702 evdev_udev_handler, master);
703 if (!master->udev_monitor_source) {
704 udev_monitor_unref(master->udev_monitor);
712 evdev_disable_udev_monitor(struct weston_seat *seat_base)
714 struct evdev_seat *seat = (struct evdev_seat *) seat_base;
716 if (!seat->udev_monitor)
719 udev_monitor_unref(seat->udev_monitor);
720 seat->udev_monitor = NULL;
721 wl_event_source_remove(seat->udev_monitor_source);
722 seat->udev_monitor_source = NULL;
726 evdev_input_create(struct weston_compositor *c, struct udev *udev,
729 struct evdev_seat *seat;
731 seat = malloc(sizeof *seat);
735 memset(seat, 0, sizeof *seat);
736 weston_seat_init(&seat->base, c);
738 wl_list_init(&seat->devices_list);
739 seat->seat_id = strdup(seat_id);
740 if (!evdev_enable_udev_monitor(udev, &seat->base)) {
746 evdev_add_devices(udev, &seat->base);
748 c->seat = &seat->base;
752 evdev_remove_devices(struct weston_seat *seat_base)
754 struct evdev_seat *seat = (struct evdev_seat *) seat_base;
755 struct evdev_input_device *device, *next;
757 wl_list_for_each_safe(device, next, &seat->devices_list, link)
758 device_removed(device);
760 notify_keyboard_focus(&seat->base.seat, NULL);
764 evdev_input_destroy(struct weston_seat *seat_base)
766 struct evdev_seat *seat = (struct evdev_seat *) seat_base;
768 evdev_remove_devices(seat_base);
769 evdev_disable_udev_monitor(&seat->base);
771 wl_list_remove(&seat->base.link);