288 lines
8.1 KiB
C
288 lines
8.1 KiB
C
#include <e.h>
|
|
#include <Eina.h>
|
|
#include <libinput.h>
|
|
#include <grp.h>
|
|
#include <sys/types.h>
|
|
#include <pwd.h>
|
|
|
|
E_API E_Module_Api e_modapi =
|
|
{
|
|
E_MODULE_API_VERSION,
|
|
"Gesture Recognition"
|
|
};
|
|
|
|
static struct libinput *gesture_recognition_ctx;
|
|
static Ecore_Fd_Handler *fd_listener;
|
|
static Eina_Hash *active_gestures;
|
|
|
|
typedef struct {
|
|
Eina_Vector2 pos;
|
|
unsigned int fingers;
|
|
struct {
|
|
Evas_Object *visuals, *win;
|
|
} visuals;
|
|
} Swipe_Stats;
|
|
|
|
static int
|
|
open_restricted(const char *path, int flags, void *user_data EINA_UNUSED)
|
|
{
|
|
int fd = open(path, flags);
|
|
return fd < 0 ? -errno : fd;
|
|
}
|
|
|
|
static void
|
|
close_restricted(int fd, void *user_data EINA_UNUSED)
|
|
{
|
|
close(fd);
|
|
}
|
|
|
|
static const struct libinput_interface interface = {
|
|
.open_restricted = open_restricted,
|
|
.close_restricted = close_restricted,
|
|
};
|
|
|
|
static void
|
|
_find_all_touch_input_devices(const char *path, struct libinput *li)
|
|
{
|
|
Eina_File_Direct_Info *info;
|
|
Eina_Iterator *input_devies = eina_file_direct_ls(path);
|
|
|
|
EINA_ITERATOR_FOREACH(input_devies, info)
|
|
{
|
|
struct libinput_device *dev = libinput_path_add_device(li, info->path);
|
|
|
|
if (!dev) continue;
|
|
|
|
if (!libinput_device_has_capability(dev, LIBINPUT_DEVICE_CAP_GESTURE))
|
|
{
|
|
libinput_path_remove_device(dev);
|
|
}
|
|
}
|
|
}
|
|
|
|
static Swipe_Stats*
|
|
_find_swipe_gesture_recognizition(struct libinput_device *dev)
|
|
{
|
|
Swipe_Stats *stats = eina_hash_find(active_gestures, dev);
|
|
|
|
return stats;
|
|
}
|
|
|
|
static Swipe_Stats*
|
|
_start_swipe_gesture_recognizition(struct libinput_device *dev)
|
|
{
|
|
Swipe_Stats *stats = _find_swipe_gesture_recognizition(dev);
|
|
|
|
if (stats)
|
|
eina_hash_del_by_key(active_gestures, dev);
|
|
|
|
stats = calloc(1, sizeof(Swipe_Stats));
|
|
EINA_SAFETY_ON_NULL_RETURN_VAL(stats, NULL);
|
|
|
|
if (e_bindings_swipe_available())
|
|
{
|
|
stats->visuals.win = elm_notify_add(e_comp->elm);
|
|
elm_notify_align_set(stats->visuals.win, 0.5, 0.5);
|
|
elm_object_tree_focus_allow_set(stats->visuals.win, EINA_FALSE);
|
|
evas_object_layer_set(stats->visuals.win, E_LAYER_CLIENT_PRIO);
|
|
evas_object_show(stats->visuals.win);
|
|
|
|
stats->visuals.visuals = elm_progressbar_add(stats->visuals.win);
|
|
elm_object_text_set(stats->visuals.visuals, "Progress of visuals");
|
|
evas_object_size_hint_min_set(stats->visuals.visuals, 300, 50);
|
|
evas_object_show(stats->visuals.visuals);
|
|
elm_object_content_set(stats->visuals.win, stats->visuals.visuals);
|
|
}
|
|
|
|
|
|
eina_hash_add(active_gestures, dev, stats);
|
|
|
|
return stats;
|
|
}
|
|
|
|
static void
|
|
_end_swipe_gesture_recognizition(struct libinput_device *dev)
|
|
{
|
|
eina_hash_del_by_key(active_gestures, dev);
|
|
}
|
|
|
|
static double
|
|
_config_angle(Eina_Vector2 pos)
|
|
{
|
|
double res = atan(pos.y/pos.x);
|
|
|
|
if (res < 0) res += M_PI;
|
|
if (pos.y < 0) res += M_PI;
|
|
return res;
|
|
}
|
|
|
|
static Eina_Bool
|
|
_cb_input_dispatch(void *data, Ecore_Fd_Handler *hdlr EINA_UNUSED)
|
|
{
|
|
struct libinput *li = data;
|
|
struct libinput_event *event;
|
|
|
|
if (libinput_dispatch(li) != 0)
|
|
printf("Failed to dispatch libinput events");
|
|
|
|
while((event = libinput_get_event(li)))
|
|
{
|
|
E_Bindings_Swipe_Live_Update live_update = e_bindings_swipe_live_update_hook_get();
|
|
|
|
enum libinput_event_type type = libinput_event_get_type(event);
|
|
struct libinput_device *dev = libinput_event_get_device(event);
|
|
if (type == LIBINPUT_EVENT_GESTURE_SWIPE_BEGIN)
|
|
{
|
|
struct libinput_event_gesture *gesture = libinput_event_get_gesture_event(event);
|
|
|
|
Swipe_Stats *stats = _start_swipe_gesture_recognizition(dev);
|
|
stats->fingers = libinput_event_gesture_get_finger_count(gesture);
|
|
stats->pos.x = stats->pos.y = 0;
|
|
}
|
|
else if (type == LIBINPUT_EVENT_GESTURE_SWIPE_UPDATE)
|
|
{
|
|
struct libinput_event_gesture *gesture = libinput_event_get_gesture_event(event);
|
|
Swipe_Stats *stats = _find_swipe_gesture_recognizition(dev);
|
|
|
|
stats->pos.x += libinput_event_gesture_get_dx(gesture);
|
|
stats->pos.y += libinput_event_gesture_get_dy(gesture);
|
|
if (live_update)
|
|
{
|
|
live_update(e_bindings_swipe_live_update_hook_data_get(), EINA_FALSE, _config_angle(stats->pos), eina_vector2_length_get(&stats->pos), 0.8, stats->fingers);
|
|
}
|
|
else if (stats->visuals.win)
|
|
{
|
|
Eina_Inarray *res = e_bindings_swipe_find_candidates(E_BINDING_CONTEXT_NONE, _config_angle (stats->pos), eina_vector2_length_get(&stats->pos), stats->fingers);
|
|
E_Binding_Swipe_Candidate *itr;
|
|
double total = 0.0f;
|
|
unsigned int len = 0;
|
|
|
|
EINA_INARRAY_FOREACH(res, itr)
|
|
{
|
|
total += itr->acceptance;
|
|
len ++;
|
|
}
|
|
|
|
if (len > 0)
|
|
{
|
|
char text_buffer[1000];
|
|
|
|
snprintf(text_buffer, sizeof(text_buffer), "%d gestures possible", len);
|
|
elm_progressbar_value_set(stats->visuals.visuals, total/len);
|
|
elm_object_text_set(stats->visuals.visuals, text_buffer);
|
|
}
|
|
else
|
|
{
|
|
elm_progressbar_value_set(stats->visuals.visuals, 0.0f);
|
|
elm_object_text_set(stats->visuals.visuals, "No gesture found");
|
|
}
|
|
|
|
eina_inarray_free(res);
|
|
}
|
|
}
|
|
else if (type == LIBINPUT_EVENT_GESTURE_SWIPE_END)
|
|
{
|
|
Swipe_Stats *stats = _find_swipe_gesture_recognizition(dev);
|
|
|
|
if (live_update)
|
|
live_update(e_bindings_swipe_live_update_hook_data_get(), EINA_TRUE, _config_angle(stats->pos), eina_vector2_length_get(&stats->pos), 0.8, stats->fingers);
|
|
else
|
|
e_bindings_swipe_handle(E_BINDING_CONTEXT_NONE, NULL, _config_angle(stats->pos), eina_vector2_length_get(&stats->pos), stats->fingers);
|
|
|
|
_end_swipe_gesture_recognizition(dev);
|
|
}
|
|
libinput_event_destroy(event);
|
|
}
|
|
return EINA_TRUE;
|
|
}
|
|
|
|
static void
|
|
_setup_libinput(void)
|
|
{
|
|
gesture_recognition_ctx = libinput_path_create_context(&interface, NULL);
|
|
|
|
_find_all_touch_input_devices("/dev/input/", gesture_recognition_ctx);
|
|
|
|
fd_listener = ecore_main_fd_handler_add(libinput_get_fd(gesture_recognition_ctx), ECORE_FD_READ, _cb_input_dispatch, gesture_recognition_ctx, NULL, NULL);
|
|
}
|
|
|
|
|
|
static void
|
|
_tear_down_libinput(void)
|
|
{
|
|
ecore_main_fd_handler_del(fd_listener);
|
|
libinput_unref(gesture_recognition_ctx);
|
|
}
|
|
|
|
static Eina_Bool
|
|
_user_part_of_input(void)
|
|
{
|
|
uid_t user = getuid();
|
|
struct passwd *user_pw = getpwuid(user);
|
|
gid_t *gids = NULL;
|
|
int number_of_groups = 0;
|
|
struct group *input_group = getgrnam("input");
|
|
|
|
EINA_SAFETY_ON_NULL_RETURN_VAL(user_pw, EINA_FALSE);
|
|
EINA_SAFETY_ON_NULL_RETURN_VAL(input_group, EINA_FALSE);
|
|
|
|
if (getgrouplist(user_pw->pw_name, getgid(), NULL, &number_of_groups) != -1)
|
|
{
|
|
ERR("Failed to enumerate groups of user");
|
|
return EINA_FALSE;
|
|
}
|
|
number_of_groups ++;
|
|
gids = alloca((number_of_groups) * sizeof(gid_t));
|
|
if (getgrouplist(user_pw->pw_name, getgid(), gids, &number_of_groups) == -1)
|
|
{
|
|
ERR("Failed to get groups of user");
|
|
return EINA_FALSE;
|
|
}
|
|
|
|
for (int i = 0; i < number_of_groups; ++i)
|
|
{
|
|
if (gids[i] == input_group->gr_gid)
|
|
return EINA_TRUE;
|
|
}
|
|
return EINA_FALSE;
|
|
}
|
|
|
|
static void
|
|
_stats_free(void *ptr)
|
|
{
|
|
Swipe_Stats *stats = ptr;
|
|
|
|
evas_object_del(stats->visuals.win);
|
|
free(stats);
|
|
}
|
|
|
|
E_API int
|
|
e_modapi_init(E_Module *m EINA_UNUSED)
|
|
{
|
|
if (!_user_part_of_input())
|
|
{
|
|
e_module_dialog_show(m, "Gesture Recognition", "Your user is not part of the input group, libinput cannot be used.");
|
|
|
|
return 0;
|
|
}
|
|
active_gestures = eina_hash_pointer_new(_stats_free);
|
|
_setup_libinput();
|
|
|
|
return 1;
|
|
}
|
|
|
|
E_API int
|
|
e_modapi_shutdown(E_Module *m EINA_UNUSED)
|
|
{
|
|
_tear_down_libinput();
|
|
return 1;
|
|
}
|
|
|
|
E_API int
|
|
e_modapi_save(E_Module *m EINA_UNUSED)
|
|
{
|
|
|
|
return 1;
|
|
}
|
|
|