evdev: Use helper for separating buttons from keys
[platform/upstream/libinput.git] / src / libinput.c
index 10baf26..90b6a13 100644 (file)
 
 #include "config.h"
 
+#include <errno.h>
+#include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
+#include <sys/epoll.h>
+#include <unistd.h>
+#include <assert.h>
 
 #include "libinput.h"
-#include "evdev.h"
 #include "libinput-private.h"
+#include "evdev.h"
+#include "timer.h"
+
+struct libinput_source {
+       libinput_source_dispatch_t dispatch;
+       void *user_data;
+       int fd;
+       struct list link;
+};
+
+struct libinput_event {
+       enum libinput_event_type type;
+       struct libinput_device *device;
+};
+
+struct libinput_event_device_notify {
+       struct libinput_event base;
+};
+
+struct libinput_event_keyboard {
+       struct libinput_event base;
+       uint32_t time;
+       uint32_t key;
+       uint32_t seat_key_count;
+       enum libinput_key_state state;
+};
+
+struct libinput_event_pointer {
+       struct libinput_event base;
+       uint32_t time;
+       double x;
+       double y;
+       uint32_t button;
+       uint32_t seat_button_count;
+       enum libinput_button_state state;
+       enum libinput_pointer_axis axis;
+       double value;
+};
+
+struct libinput_event_touch {
+       struct libinput_event base;
+       uint32_t time;
+       int32_t slot;
+       int32_t seat_slot;
+       double x;
+       double y;
+};
+
+static void
+libinput_default_log_func(struct libinput *libinput,
+                         enum libinput_log_priority priority,
+                         const char *format, va_list args)
+{
+       const char *prefix;
+
+       switch(priority) {
+       case LIBINPUT_LOG_PRIORITY_DEBUG: prefix = "debug"; break;
+       case LIBINPUT_LOG_PRIORITY_INFO: prefix = "info"; break;
+       case LIBINPUT_LOG_PRIORITY_ERROR: prefix = "error"; break;
+       default: prefix="<invalid priority>"; break;
+       }
+
+       fprintf(stderr, "libinput %s: ", prefix);
+       vfprintf(stderr, format, args);
+}
+
+void
+log_msg_va(struct libinput *libinput,
+          enum libinput_log_priority priority,
+          const char *format,
+          va_list args)
+{
+       if (libinput->log_handler &&
+           libinput->log_priority <= priority)
+               libinput->log_handler(libinput, priority, format, args);
+}
+
+void
+log_msg(struct libinput *libinput,
+       enum libinput_log_priority priority,
+       const char *format, ...)
+{
+       va_list args;
+
+       va_start(args, format);
+       log_msg_va(libinput, priority, format, args);
+       va_end(args);
+}
+
+LIBINPUT_EXPORT void
+libinput_log_set_priority(struct libinput *libinput,
+                         enum libinput_log_priority priority)
+{
+       libinput->log_priority = priority;
+}
+
+LIBINPUT_EXPORT enum libinput_log_priority
+libinput_log_get_priority(const struct libinput *libinput)
+{
+       return libinput->log_priority;
+}
+
+LIBINPUT_EXPORT void
+libinput_log_set_handler(struct libinput *libinput,
+                        libinput_log_handler log_handler)
+{
+       libinput->log_handler = log_handler;
+}
+
+static void
+libinput_post_event(struct libinput *libinput,
+                   struct libinput_event *event);
+
+LIBINPUT_EXPORT enum libinput_event_type
+libinput_event_get_type(struct libinput_event *event)
+{
+       return event->type;
+}
+
+LIBINPUT_EXPORT struct libinput *
+libinput_event_get_context(struct libinput_event *event)
+{
+       return event->device->seat->libinput;
+}
+
+LIBINPUT_EXPORT struct libinput_device *
+libinput_event_get_device(struct libinput_event *event)
+{
+       return event->device;
+}
+
+LIBINPUT_EXPORT struct libinput_event_pointer *
+libinput_event_get_pointer_event(struct libinput_event *event)
+{
+       switch (event->type) {
+       case LIBINPUT_EVENT_NONE:
+               abort(); /* not used as actual event type */
+       case LIBINPUT_EVENT_DEVICE_ADDED:
+       case LIBINPUT_EVENT_DEVICE_REMOVED:
+       case LIBINPUT_EVENT_KEYBOARD_KEY:
+               break;
+       case LIBINPUT_EVENT_POINTER_MOTION:
+       case LIBINPUT_EVENT_POINTER_MOTION_ABSOLUTE:
+       case LIBINPUT_EVENT_POINTER_BUTTON:
+       case LIBINPUT_EVENT_POINTER_AXIS:
+               return (struct libinput_event_pointer *) event;
+       case LIBINPUT_EVENT_TOUCH_DOWN:
+       case LIBINPUT_EVENT_TOUCH_UP:
+       case LIBINPUT_EVENT_TOUCH_MOTION:
+       case LIBINPUT_EVENT_TOUCH_CANCEL:
+       case LIBINPUT_EVENT_TOUCH_FRAME:
+               break;
+       }
+
+       return NULL;
+}
+
+LIBINPUT_EXPORT struct libinput_event_keyboard *
+libinput_event_get_keyboard_event(struct libinput_event *event)
+{
+       switch (event->type) {
+       case LIBINPUT_EVENT_NONE:
+               abort(); /* not used as actual event type */
+       case LIBINPUT_EVENT_DEVICE_ADDED:
+       case LIBINPUT_EVENT_DEVICE_REMOVED:
+               break;
+       case LIBINPUT_EVENT_KEYBOARD_KEY:
+               return (struct libinput_event_keyboard *) event;
+       case LIBINPUT_EVENT_POINTER_MOTION:
+       case LIBINPUT_EVENT_POINTER_MOTION_ABSOLUTE:
+       case LIBINPUT_EVENT_POINTER_BUTTON:
+       case LIBINPUT_EVENT_POINTER_AXIS:
+       case LIBINPUT_EVENT_TOUCH_DOWN:
+       case LIBINPUT_EVENT_TOUCH_UP:
+       case LIBINPUT_EVENT_TOUCH_MOTION:
+       case LIBINPUT_EVENT_TOUCH_CANCEL:
+       case LIBINPUT_EVENT_TOUCH_FRAME:
+               break;
+       }
+
+       return NULL;
+}
+
+LIBINPUT_EXPORT struct libinput_event_touch *
+libinput_event_get_touch_event(struct libinput_event *event)
+{
+       switch (event->type) {
+       case LIBINPUT_EVENT_NONE:
+               abort(); /* not used as actual event type */
+       case LIBINPUT_EVENT_DEVICE_ADDED:
+       case LIBINPUT_EVENT_DEVICE_REMOVED:
+       case LIBINPUT_EVENT_KEYBOARD_KEY:
+       case LIBINPUT_EVENT_POINTER_MOTION:
+       case LIBINPUT_EVENT_POINTER_MOTION_ABSOLUTE:
+       case LIBINPUT_EVENT_POINTER_BUTTON:
+       case LIBINPUT_EVENT_POINTER_AXIS:
+               break;
+       case LIBINPUT_EVENT_TOUCH_DOWN:
+       case LIBINPUT_EVENT_TOUCH_UP:
+       case LIBINPUT_EVENT_TOUCH_MOTION:
+       case LIBINPUT_EVENT_TOUCH_CANCEL:
+       case LIBINPUT_EVENT_TOUCH_FRAME:
+               return (struct libinput_event_touch *) event;
+       }
+
+       return NULL;
+}
+
+LIBINPUT_EXPORT struct libinput_event_device_notify *
+libinput_event_get_device_notify_event(struct libinput_event *event)
+{
+       switch (event->type) {
+       case LIBINPUT_EVENT_NONE:
+               abort(); /* not used as actual event type */
+       case LIBINPUT_EVENT_DEVICE_ADDED:
+       case LIBINPUT_EVENT_DEVICE_REMOVED:
+               return (struct libinput_event_device_notify *) event;
+       case LIBINPUT_EVENT_KEYBOARD_KEY:
+       case LIBINPUT_EVENT_POINTER_MOTION:
+       case LIBINPUT_EVENT_POINTER_MOTION_ABSOLUTE:
+       case LIBINPUT_EVENT_POINTER_BUTTON:
+       case LIBINPUT_EVENT_POINTER_AXIS:
+       case LIBINPUT_EVENT_TOUCH_DOWN:
+       case LIBINPUT_EVENT_TOUCH_UP:
+       case LIBINPUT_EVENT_TOUCH_MOTION:
+       case LIBINPUT_EVENT_TOUCH_CANCEL:
+       case LIBINPUT_EVENT_TOUCH_FRAME:
+               break;
+       }
+
+       return NULL;
+}
+
+LIBINPUT_EXPORT uint32_t
+libinput_event_keyboard_get_time(struct libinput_event_keyboard *event)
+{
+       return event->time;
+}
+
+LIBINPUT_EXPORT uint32_t
+libinput_event_keyboard_get_key(struct libinput_event_keyboard *event)
+{
+       return event->key;
+}
+
+LIBINPUT_EXPORT enum libinput_key_state
+libinput_event_keyboard_get_key_state(struct libinput_event_keyboard *event)
+{
+       return event->state;
+}
+
+LIBINPUT_EXPORT uint32_t
+libinput_event_keyboard_get_seat_key_count(
+       struct libinput_event_keyboard *event)
+{
+       return event->seat_key_count;
+}
+
+LIBINPUT_EXPORT uint32_t
+libinput_event_pointer_get_time(struct libinput_event_pointer *event)
+{
+       return event->time;
+}
+
+LIBINPUT_EXPORT double
+libinput_event_pointer_get_dx(struct libinput_event_pointer *event)
+{
+       return event->x;
+}
+
+LIBINPUT_EXPORT double
+libinput_event_pointer_get_dy(struct libinput_event_pointer *event)
+{
+       return event->y;
+}
+
+LIBINPUT_EXPORT double
+libinput_event_pointer_get_absolute_x(struct libinput_event_pointer *event)
+{
+       struct evdev_device *device =
+               (struct evdev_device *) event->base.device;
+
+       return evdev_convert_to_mm(device->abs.absinfo_x, event->x);
+}
+
+LIBINPUT_EXPORT double
+libinput_event_pointer_get_absolute_y(struct libinput_event_pointer *event)
+{
+       struct evdev_device *device =
+               (struct evdev_device *) event->base.device;
+
+       return evdev_convert_to_mm(device->abs.absinfo_y, event->y);
+}
+
+LIBINPUT_EXPORT double
+libinput_event_pointer_get_absolute_x_transformed(
+       struct libinput_event_pointer *event,
+       uint32_t width)
+{
+       struct evdev_device *device =
+               (struct evdev_device *) event->base.device;
+
+       return evdev_device_transform_x(device, event->x, width);
+}
+
+LIBINPUT_EXPORT double
+libinput_event_pointer_get_absolute_y_transformed(
+       struct libinput_event_pointer *event,
+       uint32_t height)
+{
+       struct evdev_device *device =
+               (struct evdev_device *) event->base.device;
+
+       return evdev_device_transform_y(device, event->y, height);
+}
+
+LIBINPUT_EXPORT uint32_t
+libinput_event_pointer_get_button(struct libinput_event_pointer *event)
+{
+       return event->button;
+}
+
+LIBINPUT_EXPORT enum libinput_button_state
+libinput_event_pointer_get_button_state(struct libinput_event_pointer *event)
+{
+       return event->state;
+}
+
+LIBINPUT_EXPORT uint32_t
+libinput_event_pointer_get_seat_button_count(
+       struct libinput_event_pointer *event)
+{
+       return event->seat_button_count;
+}
+
+LIBINPUT_EXPORT enum libinput_pointer_axis
+libinput_event_pointer_get_axis(struct libinput_event_pointer *event)
+{
+       return event->axis;
+}
+
+LIBINPUT_EXPORT double
+libinput_event_pointer_get_axis_value(struct libinput_event_pointer *event)
+{
+       return event->value;
+}
+
+LIBINPUT_EXPORT uint32_t
+libinput_event_touch_get_time(struct libinput_event_touch *event)
+{
+       return event->time;
+}
+
+LIBINPUT_EXPORT int32_t
+libinput_event_touch_get_slot(struct libinput_event_touch *event)
+{
+       return event->slot;
+}
+
+LIBINPUT_EXPORT int32_t
+libinput_event_touch_get_seat_slot(struct libinput_event_touch *event)
+{
+       return event->seat_slot;
+}
+
+LIBINPUT_EXPORT double
+libinput_event_touch_get_x(struct libinput_event_touch *event)
+{
+       struct evdev_device *device =
+               (struct evdev_device *) event->base.device;
+
+       return evdev_convert_to_mm(device->abs.absinfo_x, event->x);
+}
+
+LIBINPUT_EXPORT double
+libinput_event_touch_get_x_transformed(struct libinput_event_touch *event,
+                                      uint32_t width)
+{
+       struct evdev_device *device =
+               (struct evdev_device *) event->base.device;
+
+       return evdev_device_transform_x(device, event->x, width);
+}
+
+LIBINPUT_EXPORT double
+libinput_event_touch_get_y_transformed(struct libinput_event_touch *event,
+                                      uint32_t height)
+{
+       struct evdev_device *device =
+               (struct evdev_device *) event->base.device;
+
+       return evdev_device_transform_y(device, event->y, height);
+}
+
+LIBINPUT_EXPORT double
+libinput_event_touch_get_y(struct libinput_event_touch *event)
+{
+       struct evdev_device *device =
+               (struct evdev_device *) event->base.device;
+
+       return evdev_convert_to_mm(device->abs.absinfo_y, event->y);
+}
+
+struct libinput_source *
+libinput_add_fd(struct libinput *libinput,
+               int fd,
+               libinput_source_dispatch_t dispatch,
+               void *user_data)
+{
+       struct libinput_source *source;
+       struct epoll_event ep;
+
+       source = malloc(sizeof *source);
+       if (!source)
+               return NULL;
+
+       source->dispatch = dispatch;
+       source->user_data = user_data;
+       source->fd = fd;
+
+       memset(&ep, 0, sizeof ep);
+       ep.events = EPOLLIN;
+       ep.data.ptr = source;
+
+       if (epoll_ctl(libinput->epoll_fd, EPOLL_CTL_ADD, fd, &ep) < 0) {
+               close(source->fd);
+               free(source);
+               return NULL;
+       }
+
+       return source;
+}
+
+void
+libinput_remove_source(struct libinput *libinput,
+                      struct libinput_source *source)
+{
+       epoll_ctl(libinput->epoll_fd, EPOLL_CTL_DEL, source->fd, NULL);
+       source->fd = -1;
+       list_insert(&libinput->source_destroy_list, &source->link);
+}
+
+int
+libinput_init(struct libinput *libinput,
+             const struct libinput_interface *interface,
+             const struct libinput_interface_backend *interface_backend,
+             void *user_data)
+{
+       libinput->epoll_fd = epoll_create1(EPOLL_CLOEXEC);;
+       if (libinput->epoll_fd < 0)
+               return -1;
+
+       libinput->events_len = 4;
+       libinput->events = zalloc(libinput->events_len * sizeof(*libinput->events));
+       if (!libinput->events) {
+               close(libinput->epoll_fd);
+               return -1;
+       }
+
+       libinput->log_handler = libinput_default_log_func;
+       libinput->log_priority = LIBINPUT_LOG_PRIORITY_ERROR;
+       libinput->interface = interface;
+       libinput->interface_backend = interface_backend;
+       libinput->user_data = user_data;
+       libinput->refcount = 1;
+       list_init(&libinput->source_destroy_list);
+       list_init(&libinput->seat_list);
+
+       if (libinput_timer_subsys_init(libinput) != 0) {
+               free(libinput->events);
+               close(libinput->epoll_fd);
+               return -1;
+       }
+
+       return 0;
+}
+
+static void
+libinput_device_destroy(struct libinput_device *device);
+
+static void
+libinput_seat_destroy(struct libinput_seat *seat);
+
+static void
+libinput_drop_destroyed_sources(struct libinput *libinput)
+{
+       struct libinput_source *source, *next;
+
+       list_for_each_safe(source, next, &libinput->source_destroy_list, link)
+               free(source);
+       list_init(&libinput->source_destroy_list);
+}
+
+LIBINPUT_EXPORT struct libinput *
+libinput_ref(struct libinput *libinput)
+{
+       libinput->refcount++;
+       return libinput;
+}
+
+LIBINPUT_EXPORT struct libinput *
+libinput_unref(struct libinput *libinput)
+{
+       struct libinput_event *event;
+       struct libinput_device *device, *next_device;
+       struct libinput_seat *seat, *next_seat;
+
+       if (libinput == NULL)
+               return NULL;
+
+       assert(libinput->refcount > 0);
+       libinput->refcount--;
+       if (libinput->refcount > 0)
+               return libinput;
+
+       libinput_suspend(libinput);
+
+       libinput->interface_backend->destroy(libinput);
+
+       while ((event = libinput_get_event(libinput)))
+              libinput_event_destroy(event);
+
+       free(libinput->events);
+
+       list_for_each_safe(seat, next_seat, &libinput->seat_list, link) {
+               list_for_each_safe(device, next_device,
+                                  &seat->devices_list,
+                                  link)
+                       libinput_device_destroy(device);
+
+               libinput_seat_destroy(seat);
+       }
+
+       libinput_timer_subsys_destroy(libinput);
+       libinput_drop_destroyed_sources(libinput);
+       close(libinput->epoll_fd);
+       free(libinput);
+
+       return NULL;
+}
+
+LIBINPUT_EXPORT void
+libinput_event_destroy(struct libinput_event *event)
+{
+       if (event == NULL)
+               return;
+
+       if (event->device)
+               libinput_device_unref(event->device);
+
+       free(event);
+}
+
+int
+open_restricted(struct libinput *libinput,
+               const char *path, int flags)
+{
+       return libinput->interface->open_restricted(path,
+                                                   flags,
+                                                   libinput->user_data);
+}
+
+void
+close_restricted(struct libinput *libinput, int fd)
+{
+       return libinput->interface->close_restricted(fd, libinput->user_data);
+}
+
+void
+libinput_seat_init(struct libinput_seat *seat,
+                  struct libinput *libinput,
+                  const char *physical_name,
+                  const char *logical_name,
+                  libinput_seat_destroy_func destroy)
+{
+       seat->refcount = 1;
+       seat->libinput = libinput;
+       seat->physical_name = strdup(physical_name);
+       seat->logical_name = strdup(logical_name);
+       seat->destroy = destroy;
+       list_init(&seat->devices_list);
+       list_insert(&libinput->seat_list, &seat->link);
+}
+
+LIBINPUT_EXPORT struct libinput_seat *
+libinput_seat_ref(struct libinput_seat *seat)
+{
+       seat->refcount++;
+       return seat;
+}
+
+static void
+libinput_seat_destroy(struct libinput_seat *seat)
+{
+       list_remove(&seat->link);
+       free(seat->logical_name);
+       free(seat->physical_name);
+       seat->destroy(seat);
+}
+
+LIBINPUT_EXPORT struct libinput_seat *
+libinput_seat_unref(struct libinput_seat *seat)
+{
+       assert(seat->refcount > 0);
+       seat->refcount--;
+       if (seat->refcount == 0) {
+               libinput_seat_destroy(seat);
+               return NULL;
+       } else {
+               return seat;
+       }
+}
+
+LIBINPUT_EXPORT void
+libinput_seat_set_user_data(struct libinput_seat *seat, void *user_data)
+{
+       seat->user_data = user_data;
+}
+
+LIBINPUT_EXPORT void *
+libinput_seat_get_user_data(struct libinput_seat *seat)
+{
+       return seat->user_data;
+}
+
+LIBINPUT_EXPORT const char *
+libinput_seat_get_physical_name(struct libinput_seat *seat)
+{
+       return seat->physical_name;
+}
+
+LIBINPUT_EXPORT const char *
+libinput_seat_get_logical_name(struct libinput_seat *seat)
+{
+       return seat->logical_name;
+}
+
+void
+libinput_device_init(struct libinput_device *device,
+                    struct libinput_seat *seat)
+{
+       device->seat = seat;
+       device->refcount = 1;
+}
+
+LIBINPUT_EXPORT struct libinput_device *
+libinput_device_ref(struct libinput_device *device)
+{
+       device->refcount++;
+       return device;
+}
+
+static void
+libinput_device_destroy(struct libinput_device *device)
+{
+       evdev_device_destroy((struct evdev_device *) device);
+}
+
+LIBINPUT_EXPORT struct libinput_device *
+libinput_device_unref(struct libinput_device *device)
+{
+       assert(device->refcount > 0);
+       device->refcount--;
+       if (device->refcount == 0) {
+               libinput_device_destroy(device);
+               return NULL;
+       } else {
+               return device;
+       }
+}
+
+LIBINPUT_EXPORT int
+libinput_get_fd(struct libinput *libinput)
+{
+       return libinput->epoll_fd;
+}
+
+LIBINPUT_EXPORT int
+libinput_dispatch(struct libinput *libinput)
+{
+       struct libinput_source *source;
+       struct epoll_event ep[32];
+       int i, count;
+
+       count = epoll_wait(libinput->epoll_fd, ep, ARRAY_LENGTH(ep), 0);
+       if (count < 0)
+               return -errno;
+
+       for (i = 0; i < count; ++i) {
+               source = ep[i].data.ptr;
+               if (source->fd == -1)
+                       continue;
+
+               source->dispatch(source->user_data);
+       }
+
+       libinput_drop_destroyed_sources(libinput);
+
+       return 0;
+}
+
+static uint32_t
+update_seat_key_count(struct libinput_seat *seat,
+                     int32_t key,
+                     enum libinput_key_state state)
+{
+       assert(key >= 0 && key <= KEY_MAX);
+
+       switch (state) {
+       case LIBINPUT_KEY_STATE_PRESSED:
+               return ++seat->button_count[key];
+       case LIBINPUT_KEY_STATE_RELEASED:
+               /* We might not have received the first PRESSED event. */
+               if (seat->button_count[key] == 0)
+                       return 0;
+
+               return --seat->button_count[key];
+       }
+
+       return 0;
+}
+
+static uint32_t
+update_seat_button_count(struct libinput_seat *seat,
+                        int32_t button,
+                        enum libinput_button_state state)
+{
+       assert(button >= 0 && button <= KEY_MAX);
+
+       switch (state) {
+       case LIBINPUT_BUTTON_STATE_PRESSED:
+               return ++seat->button_count[button];
+       case LIBINPUT_BUTTON_STATE_RELEASED:
+               /* We might not have received the first PRESSED event. */
+               if (seat->button_count[button] == 0)
+                       return 0;
+
+               return --seat->button_count[button];
+       }
+
+       return 0;
+}
+
+static void
+init_event_base(struct libinput_event *event,
+               struct libinput_device *device,
+               enum libinput_event_type type)
+{
+       event->type = type;
+       event->device = device;
+}
+
+static void
+post_base_event(struct libinput_device *device,
+               enum libinput_event_type type,
+               struct libinput_event *event)
+{
+       struct libinput *libinput = device->seat->libinput;
+       init_event_base(event, device, type);
+       libinput_post_event(libinput, event);
+}
+
+static void
+post_device_event(struct libinput_device *device,
+                 enum libinput_event_type type,
+                 struct libinput_event *event)
+{
+       init_event_base(event, device, type);
+       libinput_post_event(device->seat->libinput, event);
+}
+
+void
+notify_added_device(struct libinput_device *device)
+{
+       struct libinput_event_device_notify *added_device_event;
+
+       added_device_event = zalloc(sizeof *added_device_event);
+       if (!added_device_event)
+               return;
+
+       post_base_event(device,
+                       LIBINPUT_EVENT_DEVICE_ADDED,
+                       &added_device_event->base);
+}
+
+void
+notify_removed_device(struct libinput_device *device)
+{
+       struct libinput_event_device_notify *removed_device_event;
+
+       removed_device_event = zalloc(sizeof *removed_device_event);
+       if (!removed_device_event)
+               return;
+
+       post_base_event(device,
+                       LIBINPUT_EVENT_DEVICE_REMOVED,
+                       &removed_device_event->base);
+}
 
 void
 keyboard_notify_key(struct libinput_device *device,
                    uint32_t time,
                    uint32_t key,
-                   enum libinput_keyboard_key_state state)
+                   enum libinput_key_state state)
 {
-       if (device->keyboard_listener)
-               device->keyboard_listener->notify_key(
-                       time, key, state,
-                       device->keyboard_listener_data);
+       struct libinput_event_keyboard *key_event;
+       uint32_t seat_key_count;
+
+       key_event = zalloc(sizeof *key_event);
+       if (!key_event)
+               return;
+
+       seat_key_count = update_seat_key_count(device->seat, key, state);
+
+       *key_event = (struct libinput_event_keyboard) {
+               .time = time,
+               .key = key,
+               .state = state,
+               .seat_key_count = seat_key_count,
+       };
+
+       post_device_event(device,
+                         LIBINPUT_EVENT_KEYBOARD_KEY,
+                         &key_event->base);
 }
 
 void
 pointer_notify_motion(struct libinput_device *device,
                      uint32_t time,
-                     li_fixed_t dx,
-                     li_fixed_t dy)
+                     double dx,
+                     double dy)
 {
-       if (device->pointer_listener)
-               device->pointer_listener->notify_motion(
-                       time, dx, dy,
-                       device->pointer_listener_data);
+       struct libinput_event_pointer *motion_event;
+
+       motion_event = zalloc(sizeof *motion_event);
+       if (!motion_event)
+               return;
+
+       *motion_event = (struct libinput_event_pointer) {
+               .time = time,
+               .x = dx,
+               .y = dy,
+       };
+
+       post_device_event(device,
+                         LIBINPUT_EVENT_POINTER_MOTION,
+                         &motion_event->base);
 }
 
 void
 pointer_notify_motion_absolute(struct libinput_device *device,
                               uint32_t time,
-                              li_fixed_t x,
-                              li_fixed_t y)
+                              double x,
+                              double y)
 {
-       if (device->pointer_listener)
-               device->pointer_listener->notify_motion_absolute(
-                       time, x, y,
-                       device->pointer_listener_data);
+       struct libinput_event_pointer *motion_absolute_event;
+
+       motion_absolute_event = zalloc(sizeof *motion_absolute_event);
+       if (!motion_absolute_event)
+               return;
+
+       *motion_absolute_event = (struct libinput_event_pointer) {
+               .time = time,
+               .x = x,
+               .y = y,
+       };
+
+       post_device_event(device,
+                         LIBINPUT_EVENT_POINTER_MOTION_ABSOLUTE,
+                         &motion_absolute_event->base);
 }
 
 void
 pointer_notify_button(struct libinput_device *device,
                      uint32_t time,
                      int32_t button,
-                     enum libinput_pointer_button_state state)
+                     enum libinput_button_state state)
 {
-       if (device->pointer_listener)
-               device->pointer_listener->notify_button(
-                       time, button, state,
-                       device->pointer_listener_data);
+       struct libinput_event_pointer *button_event;
+       int32_t seat_button_count;
+
+       button_event = zalloc(sizeof *button_event);
+       if (!button_event)
+               return;
+
+       seat_button_count = update_seat_button_count(device->seat,
+                                                    button,
+                                                    state);
+
+       *button_event = (struct libinput_event_pointer) {
+               .time = time,
+               .button = button,
+               .state = state,
+               .seat_button_count = seat_button_count,
+       };
+
+       post_device_event(device,
+                         LIBINPUT_EVENT_POINTER_BUTTON,
+                         &button_event->base);
 }
 
 void
 pointer_notify_axis(struct libinput_device *device,
                    uint32_t time,
                    enum libinput_pointer_axis axis,
-                   li_fixed_t value)
+                   double value)
 {
-       if (device->pointer_listener)
-               device->pointer_listener->notify_axis(
-                       time, axis, value,
-                       device->pointer_listener_data);
+       struct libinput_event_pointer *axis_event;
+
+       axis_event = zalloc(sizeof *axis_event);
+       if (!axis_event)
+               return;
+
+       *axis_event = (struct libinput_event_pointer) {
+               .time = time,
+               .axis = axis,
+               .value = value,
+       };
+
+       post_device_event(device,
+                         LIBINPUT_EVENT_POINTER_AXIS,
+                         &axis_event->base);
 }
 
 void
-touch_notify_touch(struct libinput_device *device,
-                  uint32_t time,
-                  int32_t slot,
-                  li_fixed_t x,
-                  li_fixed_t y,
-                  enum libinput_touch_type touch_type)
+touch_notify_touch_down(struct libinput_device *device,
+                       uint32_t time,
+                       int32_t slot,
+                       int32_t seat_slot,
+                       double x,
+                       double y)
 {
-       if (device->touch_listener)
-               device->touch_listener->notify_touch(
-                       time, slot, x, y, touch_type,
-                       device->touch_listener_data);
+       struct libinput_event_touch *touch_event;
+
+       touch_event = zalloc(sizeof *touch_event);
+       if (!touch_event)
+               return;
+
+       *touch_event = (struct libinput_event_touch) {
+               .time = time,
+               .slot = slot,
+               .seat_slot = seat_slot,
+               .x = x,
+               .y = y,
+       };
+
+       post_device_event(device,
+                         LIBINPUT_EVENT_TOUCH_DOWN,
+                         &touch_event->base);
 }
 
-LIBINPUT_EXPORT void
-libinput_device_set_keyboard_listener(
-       struct libinput_device *device,
-       const struct libinput_keyboard_listener *listener,
-       void *data)
+void
+touch_notify_touch_motion(struct libinput_device *device,
+                         uint32_t time,
+                         int32_t slot,
+                         int32_t seat_slot,
+                         double x,
+                         double y)
 {
-       device->keyboard_listener = listener;
-       device->keyboard_listener_data = data;
+       struct libinput_event_touch *touch_event;
+
+       touch_event = zalloc(sizeof *touch_event);
+       if (!touch_event)
+               return;
+
+       *touch_event = (struct libinput_event_touch) {
+               .time = time,
+               .slot = slot,
+               .seat_slot = seat_slot,
+               .x = x,
+               .y = y,
+       };
+
+       post_device_event(device,
+                         LIBINPUT_EVENT_TOUCH_MOTION,
+                         &touch_event->base);
 }
 
-LIBINPUT_EXPORT void
-libinput_device_set_pointer_listener(
-       struct libinput_device *device,
-       const struct libinput_pointer_listener *listener,
-       void *data)
+void
+touch_notify_touch_up(struct libinput_device *device,
+                     uint32_t time,
+                     int32_t slot,
+                     int32_t seat_slot)
 {
-       device->pointer_listener = listener;
-       device->pointer_listener_data = data;
+       struct libinput_event_touch *touch_event;
+
+       touch_event = zalloc(sizeof *touch_event);
+       if (!touch_event)
+               return;
+
+       *touch_event = (struct libinput_event_touch) {
+               .time = time,
+               .slot = slot,
+               .seat_slot = seat_slot,
+       };
+
+       post_device_event(device,
+                         LIBINPUT_EVENT_TOUCH_UP,
+                         &touch_event->base);
 }
 
-LIBINPUT_EXPORT void
-libinput_device_set_touch_listener(
-       struct libinput_device *device,
-       const struct libinput_touch_listener *listener,
-       void *data)
+void
+touch_notify_frame(struct libinput_device *device,
+                  uint32_t time)
+{
+       struct libinput_event_touch *touch_event;
+
+       touch_event = zalloc(sizeof *touch_event);
+       if (!touch_event)
+               return;
+
+       *touch_event = (struct libinput_event_touch) {
+               .time = time,
+       };
+
+       post_device_event(device,
+                         LIBINPUT_EVENT_TOUCH_FRAME,
+                         &touch_event->base);
+}
+
+static void
+libinput_post_event(struct libinput *libinput,
+                   struct libinput_event *event)
 {
-       device->touch_listener = listener;
-       device->touch_listener_data = data;
+       struct libinput_event **events = libinput->events;
+       size_t events_len = libinput->events_len;
+       size_t events_count = libinput->events_count;
+       size_t move_len;
+       size_t new_out;
+
+       events_count++;
+       if (events_count > events_len) {
+               events_len *= 2;
+               events = realloc(events, events_len * sizeof *events);
+               if (!events) {
+                       fprintf(stderr, "Failed to reallocate event ring "
+                               "buffer");
+                       return;
+               }
+
+               if (libinput->events_count > 0 && libinput->events_in == 0) {
+                       libinput->events_in = libinput->events_len;
+               } else if (libinput->events_count > 0 &&
+                          libinput->events_out >= libinput->events_in) {
+                       move_len = libinput->events_len - libinput->events_out;
+                       new_out = events_len - move_len;
+                       memmove(events + new_out,
+                               events + libinput->events_out,
+                               move_len * sizeof *events);
+                       libinput->events_out = new_out;
+               }
+
+               libinput->events = events;
+               libinput->events_len = events_len;
+       }
+
+       if (event->device)
+               libinput_device_ref(event->device);
+
+       libinput->events_count = events_count;
+       events[libinput->events_in] = event;
+       libinput->events_in = (libinput->events_in + 1) % libinput->events_len;
+}
+
+LIBINPUT_EXPORT struct libinput_event *
+libinput_get_event(struct libinput *libinput)
+{
+       struct libinput_event *event;
+
+       if (libinput->events_count == 0)
+               return NULL;
+
+       event = libinput->events[libinput->events_out];
+       libinput->events_out =
+               (libinput->events_out + 1) % libinput->events_len;
+       libinput->events_count--;
+
+       return event;
+}
+
+LIBINPUT_EXPORT enum libinput_event_type
+libinput_next_event_type(struct libinput *libinput)
+{
+       struct libinput_event *event;
+
+       if (libinput->events_count == 0)
+               return LIBINPUT_EVENT_NONE;
+
+       event = libinput->events[libinput->events_out];
+       return event->type;
+}
+
+LIBINPUT_EXPORT void *
+libinput_get_user_data(struct libinput *libinput)
+{
+       return libinput->user_data;
 }
 
 LIBINPUT_EXPORT int
-libinput_device_dispatch(struct libinput_device *device)
+libinput_resume(struct libinput *libinput)
 {
-       return evdev_device_dispatch((struct evdev_device *) device);
+       return libinput->interface_backend->resume(libinput);
 }
 
 LIBINPUT_EXPORT void
-libinput_device_destroy(struct libinput_device *device)
+libinput_suspend(struct libinput *libinput)
 {
-       evdev_device_destroy((struct evdev_device *) device);
+       libinput->interface_backend->suspend(libinput);
+}
+
+LIBINPUT_EXPORT void
+libinput_device_set_user_data(struct libinput_device *device, void *user_data)
+{
+       device->user_data = user_data;
+}
+
+LIBINPUT_EXPORT void *
+libinput_device_get_user_data(struct libinput_device *device)
+{
+       return device->user_data;
+}
+
+LIBINPUT_EXPORT const char *
+libinput_device_get_sysname(struct libinput_device *device)
+{
+       return evdev_device_get_sysname((struct evdev_device *) device);
+}
+
+LIBINPUT_EXPORT const char *
+libinput_device_get_name(struct libinput_device *device)
+{
+       return evdev_device_get_name((struct evdev_device *) device);
+}
+
+LIBINPUT_EXPORT unsigned int
+libinput_device_get_id_product(struct libinput_device *device)
+{
+       return evdev_device_get_id_product((struct evdev_device *) device);
+}
+
+LIBINPUT_EXPORT unsigned int
+libinput_device_get_id_vendor(struct libinput_device *device)
+{
+       return evdev_device_get_id_vendor((struct evdev_device *) device);
+}
+
+LIBINPUT_EXPORT const char *
+libinput_device_get_output_name(struct libinput_device *device)
+{
+       return evdev_device_get_output((struct evdev_device *) device);
+}
+
+LIBINPUT_EXPORT struct libinput_seat *
+libinput_device_get_seat(struct libinput_device *device)
+{
+       return device->seat;
 }
 
 LIBINPUT_EXPORT void
@@ -166,3 +1212,104 @@ libinput_device_calibrate(struct libinput_device *device,
 {
        evdev_device_calibrate((struct evdev_device *) device, calibration);
 }
+
+LIBINPUT_EXPORT int
+libinput_device_has_capability(struct libinput_device *device,
+                              enum libinput_device_capability capability)
+{
+       return evdev_device_has_capability((struct evdev_device *) device,
+                                          capability);
+}
+
+LIBINPUT_EXPORT int
+libinput_device_get_size(struct libinput_device *device,
+                        double *width,
+                        double *height)
+{
+       return evdev_device_get_size((struct evdev_device *)device,
+                                    width,
+                                    height);
+}
+
+LIBINPUT_EXPORT struct libinput_event *
+libinput_event_device_notify_get_base_event(struct libinput_event_device_notify *event)
+{
+       return &event->base;
+}
+
+LIBINPUT_EXPORT struct libinput_event *
+libinput_event_keyboard_get_base_event(struct libinput_event_keyboard *event)
+{
+       return &event->base;
+}
+
+LIBINPUT_EXPORT struct libinput_event *
+libinput_event_pointer_get_base_event(struct libinput_event_pointer *event)
+{
+       return &event->base;
+}
+
+LIBINPUT_EXPORT struct libinput_event *
+libinput_event_touch_get_base_event(struct libinput_event_touch *event)
+{
+       return &event->base;
+}
+
+LIBINPUT_EXPORT const char *
+libinput_config_status_to_str(enum libinput_config_status status)
+{
+       const char *str = NULL;
+
+       switch(status) {
+       case LIBINPUT_CONFIG_STATUS_SUCCESS:
+               str = "Success";
+               break;
+       case LIBINPUT_CONFIG_STATUS_UNSUPPORTED:
+               str = "Unsupported configuration option";
+               break;
+       case LIBINPUT_CONFIG_STATUS_INVALID:
+               str = "Invalid argument range";
+               break;
+       }
+
+       return str;
+}
+
+LIBINPUT_EXPORT int
+libinput_device_config_tap_get_finger_count(struct libinput_device *device)
+{
+       return device->config.tap ? device->config.tap->count(device) : 0;
+}
+
+LIBINPUT_EXPORT enum libinput_config_status
+libinput_device_config_tap_set_enabled(struct libinput_device *device,
+                                      enum libinput_config_tap_state enable)
+{
+       if (enable != LIBINPUT_CONFIG_TAP_ENABLED &&
+           enable != LIBINPUT_CONFIG_TAP_DISABLED)
+               return LIBINPUT_CONFIG_STATUS_INVALID;
+
+       if (enable &&
+           libinput_device_config_tap_get_finger_count(device) == 0)
+               return LIBINPUT_CONFIG_STATUS_UNSUPPORTED;
+
+       return device->config.tap->set_enabled(device, enable);
+}
+
+LIBINPUT_EXPORT enum libinput_config_tap_state
+libinput_device_config_tap_get_enabled(struct libinput_device *device)
+{
+       if (libinput_device_config_tap_get_finger_count(device) == 0)
+               return LIBINPUT_CONFIG_TAP_DISABLED;
+
+       return device->config.tap->get_enabled(device);
+}
+
+LIBINPUT_EXPORT enum libinput_config_tap_state
+libinput_device_config_tap_get_default_enabled(struct libinput_device *device)
+{
+       if (libinput_device_config_tap_get_finger_count(device) == 0)
+               return LIBINPUT_CONFIG_TAP_DISABLED;
+
+       return device->config.tap->get_default(device);
+}