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#define _POSIX_C_SOURCE 200809L
#include <assert.h>
#include <string.h>
#include <libinput.h>
#include <stdlib.h>
#include <wlr/interfaces/wlr_tablet_pad.h>
#include <wlr/util/log.h>
#include "backend/libinput.h"
const struct wlr_tablet_pad_impl libinput_tablet_pad_impl = {
.name = "libinput-tablet-pad",
};
static void group_destroy(struct wlr_tablet_pad_group *group) {
free(group->buttons);
free(group->strips);
free(group->rings);
free(group);
}
static void add_pad_group_from_libinput(struct wlr_tablet_pad *pad,
struct libinput_device *device, unsigned int index) {
struct libinput_tablet_pad_mode_group *li_group =
libinput_device_tablet_pad_get_mode_group(device, index);
struct wlr_tablet_pad_group *group =
calloc(1, sizeof(struct wlr_tablet_pad_group));
if (!group) {
wlr_log_errno(WLR_ERROR, "failed to allocate wlr_tablet_pad_group");
return;
}
for (size_t i = 0; i < pad->ring_count; ++i) {
if (libinput_tablet_pad_mode_group_has_ring(li_group, i)) {
++group->ring_count;
}
}
group->rings = calloc(sizeof(unsigned int), group->ring_count);
if (group->rings == NULL) {
goto group_fail;
}
size_t ring = 0;
for (size_t i = 0; i < pad->ring_count; ++i) {
if (libinput_tablet_pad_mode_group_has_ring(li_group, i)) {
group->rings[ring++] = i;
}
}
for (size_t i = 0; i < pad->strip_count; ++i) {
if (libinput_tablet_pad_mode_group_has_strip(li_group, i)) {
++group->strip_count;
}
}
group->strips = calloc(sizeof(unsigned int), group->strip_count);
if (group->strips == NULL) {
goto group_fail;
}
size_t strip = 0;
for (size_t i = 0; i < pad->strip_count; ++i) {
if (libinput_tablet_pad_mode_group_has_strip(li_group, i)) {
group->strips[strip++] = i;
}
}
for (size_t i = 0; i < pad->button_count; ++i) {
if (libinput_tablet_pad_mode_group_has_button(li_group, i)) {
++group->button_count;
}
}
group->buttons = calloc(sizeof(unsigned int), group->button_count);
if (group->buttons == NULL) {
goto group_fail;
}
size_t button = 0;
for (size_t i = 0; i < pad->button_count; ++i) {
if (libinput_tablet_pad_mode_group_has_button(li_group, i)) {
group->buttons[button++] = i;
}
}
group->mode_count = libinput_tablet_pad_mode_group_get_num_modes(li_group);
libinput_tablet_pad_mode_group_ref(li_group);
wl_list_insert(&pad->groups, &group->link);
return;
group_fail:
wlr_log(WLR_ERROR, "failed to configure wlr_tablet_pad_group");
group_destroy(group);
}
void init_device_tablet_pad(struct wlr_libinput_input_device *dev) {
struct libinput_device *handle = dev->handle;
const char *name = libinput_device_get_name(handle);
struct wlr_tablet_pad *wlr_tablet_pad = &dev->tablet_pad;
wlr_tablet_pad_init(wlr_tablet_pad, &libinput_tablet_pad_impl, name);
wlr_tablet_pad->base.vendor = libinput_device_get_id_vendor(handle);
wlr_tablet_pad->base.product = libinput_device_get_id_product(handle);
wlr_tablet_pad->button_count =
libinput_device_tablet_pad_get_num_buttons(handle);
wlr_tablet_pad->ring_count =
libinput_device_tablet_pad_get_num_rings(handle);
wlr_tablet_pad->strip_count =
libinput_device_tablet_pad_get_num_strips(handle);
struct udev_device *udev = libinput_device_get_udev_device(handle);
char **dst = wl_array_add(&wlr_tablet_pad->paths, sizeof(char *));
*dst = strdup(udev_device_get_syspath(udev));
int groups = libinput_device_tablet_pad_get_num_mode_groups(handle);
for (int i = 0; i < groups; ++i) {
add_pad_group_from_libinput(wlr_tablet_pad, handle, i);
}
}
void finish_device_tablet_pad(struct wlr_libinput_input_device *dev) {
struct wlr_tablet_pad_group *group, *tmp;
wl_list_for_each_safe(group, tmp, &dev->tablet_pad.groups, link) {
group_destroy(group);
}
wlr_tablet_pad_finish(&dev->tablet_pad);
int groups = libinput_device_tablet_pad_get_num_mode_groups(dev->handle);
for (int i = 0; i < groups; ++i) {
struct libinput_tablet_pad_mode_group *li_group =
libinput_device_tablet_pad_get_mode_group(dev->handle, i);
libinput_tablet_pad_mode_group_unref(li_group);
}
}
struct wlr_libinput_input_device *device_from_tablet_pad(
struct wlr_tablet_pad *wlr_tablet_pad) {
assert(wlr_tablet_pad->impl == &libinput_tablet_pad_impl);
struct wlr_libinput_input_device *dev =
wl_container_of(wlr_tablet_pad, dev, tablet_pad);
return dev;
}
void handle_tablet_pad_button(struct libinput_event *event,
struct wlr_tablet_pad *tablet_pad) {
struct libinput_event_tablet_pad *pevent =
libinput_event_get_tablet_pad_event(event);
struct wlr_tablet_pad_button_event wlr_event = {
.time_msec = usec_to_msec(libinput_event_tablet_pad_get_time_usec(pevent)),
.button = libinput_event_tablet_pad_get_button_number(pevent),
.mode = libinput_event_tablet_pad_get_mode(pevent),
.group = libinput_tablet_pad_mode_group_get_index(
libinput_event_tablet_pad_get_mode_group(pevent)),
};
switch (libinput_event_tablet_pad_get_button_state(pevent)) {
case LIBINPUT_BUTTON_STATE_PRESSED:
wlr_event.state = WLR_BUTTON_PRESSED;
break;
case LIBINPUT_BUTTON_STATE_RELEASED:
wlr_event.state = WLR_BUTTON_RELEASED;
break;
}
wl_signal_emit_mutable(&tablet_pad->events.button, &wlr_event);
}
void handle_tablet_pad_ring(struct libinput_event *event,
struct wlr_tablet_pad *tablet_pad) {
struct libinput_event_tablet_pad *pevent =
libinput_event_get_tablet_pad_event(event);
struct wlr_tablet_pad_ring_event wlr_event = {
.time_msec = usec_to_msec(libinput_event_tablet_pad_get_time_usec(pevent)),
.ring = libinput_event_tablet_pad_get_ring_number(pevent),
.position = libinput_event_tablet_pad_get_ring_position(pevent),
.mode = libinput_event_tablet_pad_get_mode(pevent),
};
switch (libinput_event_tablet_pad_get_ring_source(pevent)) {
case LIBINPUT_TABLET_PAD_RING_SOURCE_UNKNOWN:
wlr_event.source = WLR_TABLET_PAD_RING_SOURCE_UNKNOWN;
break;
case LIBINPUT_TABLET_PAD_RING_SOURCE_FINGER:
wlr_event.source = WLR_TABLET_PAD_RING_SOURCE_FINGER;
break;
}
wl_signal_emit_mutable(&tablet_pad->events.ring, &wlr_event);
}
void handle_tablet_pad_strip(struct libinput_event *event,
struct wlr_tablet_pad *tablet_pad) {
struct libinput_event_tablet_pad *pevent =
libinput_event_get_tablet_pad_event(event);
struct wlr_tablet_pad_strip_event wlr_event = {
.time_msec = usec_to_msec(libinput_event_tablet_pad_get_time_usec(pevent)),
.strip = libinput_event_tablet_pad_get_strip_number(pevent),
.position = libinput_event_tablet_pad_get_strip_position(pevent),
.mode = libinput_event_tablet_pad_get_mode(pevent),
};
switch (libinput_event_tablet_pad_get_strip_source(pevent)) {
case LIBINPUT_TABLET_PAD_STRIP_SOURCE_UNKNOWN:
wlr_event.source = WLR_TABLET_PAD_STRIP_SOURCE_UNKNOWN;
break;
case LIBINPUT_TABLET_PAD_STRIP_SOURCE_FINGER:
wlr_event.source = WLR_TABLET_PAD_STRIP_SOURCE_FINGER;
break;
}
wl_signal_emit_mutable(&tablet_pad->events.strip, &wlr_event);
}
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