libei: doc/api/libei.h Source File

libei 1.4.0 A library for Emulated Input

libei.h
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1/* SPDX-License-Identifier: MIT */
2/*
3 * Copyright © 2020 Red Hat, Inc.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
14 * Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 */
24
25#pragma once
26
27#ifdef __cplusplus
28extern "C" {
29#endif
30
31#include <stdbool.h>
32#include <stdint.h>
33#include <stddef.h>
34
120
125
135struct ei;
136
148struct ei_device;
149
163struct ei_seat;
164
173struct ei_event;
174
182struct ei_keymap;
183
204struct ei_region;
205
216struct ei_touch;
217
226struct ei_ping;
227
250 enum ei_device_type {
251 EI_DEVICE_TYPE_VIRTUAL = 1,
252 EI_DEVICE_TYPE_PHYSICAL
253};
254
278 enum ei_device_capability {
282 EI_DEVICE_CAP_POINTER = (1 << 0),
286 EI_DEVICE_CAP_POINTER_ABSOLUTE = (1 << 1),
290 EI_DEVICE_CAP_KEYBOARD = (1 << 2),
294 EI_DEVICE_CAP_TOUCH = (1 << 3),
298 EI_DEVICE_CAP_SCROLL = (1 << 4),
302 EI_DEVICE_CAP_BUTTON = (1 << 5),
303};
304
310 enum ei_keymap_type {
314 EI_KEYMAP_TYPE_XKB = 1,
315};
316
326 enum ei_event_type {
335 EI_EVENT_CONNECT = 1,
336
349 EI_EVENT_DISCONNECT,
350
360 EI_EVENT_SEAT_ADDED,
361
372 EI_EVENT_SEAT_REMOVED,
373
383 EI_EVENT_DEVICE_ADDED,
384
395 EI_EVENT_DEVICE_REMOVED,
396
403 EI_EVENT_DEVICE_PAUSED,
407 EI_EVENT_DEVICE_RESUMED,
408
447 EI_EVENT_KEYBOARD_MODIFIERS,
448
456 EI_EVENT_PONG = 90,
457
467 EI_EVENT_SYNC,
468
477 EI_EVENT_FRAME = 100,
478
493 EI_EVENT_DEVICE_START_EMULATING = 200,
501 EI_EVENT_DEVICE_STOP_EMULATING,
502
510 EI_EVENT_POINTER_MOTION = 300,
511
519 EI_EVENT_POINTER_MOTION_ABSOLUTE = 400,
520
527 EI_EVENT_BUTTON_BUTTON = 500,
528
536 EI_EVENT_SCROLL_DELTA = 600,
543 EI_EVENT_SCROLL_STOP,
550 EI_EVENT_SCROLL_CANCEL,
558 EI_EVENT_SCROLL_DISCRETE,
559
566 EI_EVENT_KEYBOARD_KEY = 700,
567
577 EI_EVENT_TOUCH_DOWN = 800,
585 EI_EVENT_TOUCH_UP,
593 EI_EVENT_TOUCH_MOTION,
594};
595
601const char*
602ei_event_type_to_string(enum ei_event_type);
603
607struct ei *
608ei_new(void *user_data);
609
627struct ei *
628ei_new_sender(void *user_data);
629
647struct ei *
648ei_new_receiver(void *user_data);
649
656struct ei *
657ei_ref(struct ei *ei);
658
666struct ei *
667ei_unref(struct ei *ei);
668
674void
675ei_set_user_data(struct ei *ei, void *user_data);
676
681void *
682ei_get_user_data(struct ei *ei);
683
687bool
688ei_is_sender(struct ei *ei);
689
693 enum ei_log_priority {
694 EI_LOG_PRIORITY_DEBUG = 10,
695 EI_LOG_PRIORITY_INFO = 20,
696 EI_LOG_PRIORITY_WARNING = 30,
697 EI_LOG_PRIORITY_ERROR = 40,
698};
699
700struct ei_log_context;
701
706unsigned int
707ei_log_context_get_line(struct ei_log_context *ctx);
708
713const char *
714ei_log_context_get_file(struct ei_log_context *ctx);
715
720const char *
721ei_log_context_get_func(struct ei_log_context *ctx);
722
740 typedef void (*ei_log_handler)(struct ei *ei,
741 enum ei_log_priority priority,
742 const char *message,
743 struct ei_log_context *context);
754void
755ei_log_set_handler(struct ei *ei, ei_log_handler log_handler);
756
760void
761ei_log_set_priority(struct ei *ei, enum ei_log_priority priority);
762
766enum ei_log_priority
767ei_log_get_priority(const struct ei *ei);
768
777 typedef uint64_t (*ei_clock_now_func)(struct ei *ei);
778
784void
785ei_clock_set_now_func(struct ei *, ei_clock_now_func func);
786
799void
800ei_configure_name(struct ei * ei, const char *name);
801
823int
824ei_setup_backend_fd(struct ei *ei, int fd);
825
852int
853ei_setup_backend_socket(struct ei *ei, const char *socketpath);
854
861int
862ei_get_fd(struct ei *ei);
863
873struct ei_ping *
874ei_new_ping(struct ei *ei);
875
888uint64_t
889ei_ping_get_id(struct ei_ping *ping);
890
899struct ei_ping *
900ei_ping_ref(struct ei_ping *ei_ping);
901
911struct ei_ping *
912ei_ping_unref(struct ei_ping *ei_ping);
913
921void
922ei_ping_set_user_data(struct ei_ping *ei_ping, void *user_data);
923
930void *
931ei_ping_get_user_data(struct ei_ping *ei_ping);
932
950void
951ei_ping(struct ei_ping *ping);
952
962void
963ei_dispatch(struct ei *ei);
964
971struct ei_event *
972ei_get_event(struct ei *ei);
973
990struct ei_event *
991ei_peek_event(struct ei *ei);
992
1000uint64_t
1001ei_now(struct ei *ei);
1002
1018void
1019ei_disconnect(struct ei *ei);
1020
1028void
1029ei_seat_set_user_data(struct ei_seat *seat, void *user_data);
1030
1037void *
1038ei_seat_get_user_data(struct ei_seat *seat);
1039
1043const char *
1044ei_seat_get_name(struct ei_seat *seat);
1045
1053bool
1054ei_seat_has_capability(struct ei_seat *seat,
1055 enum ei_device_capability cap);
1056
1074void
1075ei_seat_bind_capabilities(struct ei_seat *seat, ...)
1076__attribute__((sentinel));
1077
1089void
1090ei_seat_unbind_capabilities(struct ei_seat *seat, ...)
1091__attribute__((sentinel));
1092
1093
1097struct ei_seat *
1098ei_seat_ref(struct ei_seat *seat);
1099
1103struct ei_seat *
1104ei_seat_unref(struct ei_seat *seat);
1105
1111struct ei *
1112ei_seat_get_context(struct ei_seat *seat);
1113
1123struct ei_event *
1124ei_event_unref(struct ei_event *event);
1125
1129enum ei_event_type
1130ei_event_get_type(struct ei_event *event);
1131
1141struct ei_device *
1142ei_event_get_device(struct ei_event *event);
1143
1153uint64_t
1154ei_event_get_time(struct ei_event *event);
1155
1164struct ei_device *
1165ei_device_ref(struct ei_device *device);
1166
1176struct ei_device *
1177ei_device_unref(struct ei_device *device);
1178
1182struct ei_seat *
1183ei_device_get_seat(struct ei_device *device);
1184
1192void
1193ei_device_set_user_data(struct ei_device *device, void *user_data);
1194
1201void *
1202ei_device_get_user_data(struct ei_device *device);
1203
1210uint32_t
1211ei_device_get_width(struct ei_device *device);
1212
1219uint32_t
1220ei_device_get_height(struct ei_device *device);
1221
1227size_t
1228ei_keymap_get_size(struct ei_keymap *keymap);
1229
1236enum ei_keymap_type
1237ei_keymap_get_type(struct ei_keymap *keymap);
1238
1246int
1247ei_keymap_get_fd(struct ei_keymap *keymap);
1248
1259struct ei_device *
1260ei_keymap_get_device(struct ei_keymap *keymap);
1261
1270struct ei_keymap *
1271ei_keymap_ref(struct ei_keymap *keymap);
1272
1282struct ei_keymap *
1283ei_keymap_unref(struct ei_keymap *keymap);
1284
1288void
1289ei_keymap_set_user_data(struct ei_keymap *keymap, void *user_data);
1290
1294void *
1295ei_keymap_get_user_data(struct ei_keymap *keymap);
1296
1316void
1317ei_device_close(struct ei_device *device);
1318
1324const char *
1325ei_device_get_name(struct ei_device *device);
1326
1332enum ei_device_type
1333ei_device_get_type(struct ei_device *device);
1334
1342bool
1343ei_device_has_capability(struct ei_device *device,
1344 enum ei_device_capability cap);
1345
1346
1368struct ei_region *
1369ei_device_get_region(struct ei_device *device, size_t index);
1370
1379struct ei_region *
1380ei_device_get_region_at(struct ei_device *device, double x, double y);
1381
1385struct ei_region *
1386ei_region_ref(struct ei_region *region);
1387
1391struct ei_region *
1392ei_region_unref(struct ei_region *region);
1393
1397void
1398ei_region_set_user_data(struct ei_region *region, void *user_data);
1399
1403void *
1404ei_region_get_user_data(struct ei_region *region);
1405
1409uint32_t
1410ei_region_get_x(struct ei_region *region);
1411
1415uint32_t
1416ei_region_get_y(struct ei_region *region);
1417
1421uint32_t
1422ei_region_get_width(struct ei_region *region);
1423
1427uint32_t
1428ei_region_get_height(struct ei_region *region);
1429
1457const char *
1458ei_region_get_mapping_id(struct ei_region *region);
1459
1466bool
1467ei_region_contains(struct ei_region *region, double x, double y);
1468
1479bool
1480ei_region_convert_point(struct ei_region *region, double *x, double *y);
1481
1551double
1552ei_region_get_physical_scale(struct ei_region *region);
1553
1568/* FIXME: the current API makes it impossible to know when the keymap has
1569 * been consumed so the file stays open forever.
1570 */
1571struct ei_keymap *
1572ei_device_keyboard_get_keymap(struct ei_device *device);
1573
1579struct ei_device *
1580ei_keymap_get_context(struct ei_keymap *keymap);
1581
1587struct ei *
1588ei_device_get_context(struct ei_device *device);
1589
1619void
1620ei_device_start_emulating(struct ei_device *device, uint32_t sequence);
1621
1634void
1635ei_device_stop_emulating(struct ei_device *device);
1636
1653void
1654ei_device_frame(struct ei_device *device, uint64_t time);
1655
1668void
1669ei_device_pointer_motion(struct ei_device *device, double x, double y);
1670
1686void
1687ei_device_pointer_motion_absolute(struct ei_device *device,
1688 double x, double y);
1689
1704void
1705ei_device_button_button(struct ei_device *device,
1706 uint32_t button, bool is_press);
1707
1726void
1727ei_device_scroll_delta(struct ei_device *device, double x, double y);
1728
1751void
1752ei_device_scroll_discrete(struct ei_device *device, int32_t x, int32_t y);
1753
1783void
1784ei_device_scroll_stop(struct ei_device *device, bool stop_x, bool stop_y);
1785
1814void
1815ei_device_scroll_cancel(struct ei_device *device, bool cancel_x, bool cancel_y);
1816
1837void
1838ei_device_keyboard_key(struct ei_device *device, uint32_t keycode, bool is_press);
1839
1852struct ei_touch *
1853ei_device_touch_new(struct ei_device *device);
1854
1868void
1869ei_touch_down(struct ei_touch *touch, double x, double y);
1870
1876void
1877ei_touch_motion(struct ei_touch *touch, double x, double y);
1878
1886void
1887ei_touch_up(struct ei_touch *touch);
1888
1900void
1901ei_touch_cancel(struct ei_touch *touch);
1902
1911struct ei_touch *
1912ei_touch_ref(struct ei_touch *touch);
1913
1923struct ei_touch *
1924ei_touch_unref(struct ei_touch *touch);
1925
1933void
1934ei_touch_set_user_data(struct ei_touch *touch, void *user_data);
1935
1942void *
1943ei_touch_get_user_data(struct ei_touch *touch);
1944
1950struct ei_device *
1951ei_touch_get_device(struct ei_touch *touch);
1952
1962struct ei_seat *
1963ei_event_get_seat(struct ei_event *event);
1964
1974struct ei_ping *
1975ei_event_pong_get_ping(struct ei_event *event);
1976
1985uint32_t
1986ei_event_emulating_get_sequence(struct ei_event *event);
1987
1995uint32_t
1996ei_event_keyboard_get_xkb_mods_depressed(struct ei_event *event);
1997
2005uint32_t
2006ei_event_keyboard_get_xkb_mods_latched(struct ei_event *event);
2007
2015uint32_t
2016ei_event_keyboard_get_xkb_mods_locked(struct ei_event *event);
2017
2038uint32_t
2039ei_event_keyboard_get_xkb_group(struct ei_event *event);
2040
2041
2048double
2049ei_event_pointer_get_dx(struct ei_event *event);
2050
2057double
2058ei_event_pointer_get_dy(struct ei_event *event);
2059
2066double
2067ei_event_pointer_get_absolute_x(struct ei_event *event);
2068
2075double
2076ei_event_pointer_get_absolute_y(struct ei_event *event);
2077
2084uint32_t
2085ei_event_button_get_button(struct ei_event *event);
2086
2093bool
2094ei_event_button_get_is_press(struct ei_event *event);
2095
2102double
2103ei_event_scroll_get_dx(struct ei_event *event);
2104
2111double
2112ei_event_scroll_get_dy(struct ei_event *event);
2113
2120bool
2121ei_event_scroll_get_stop_x(struct ei_event *event);
2122
2129bool
2130ei_event_scroll_get_stop_y(struct ei_event *event);
2131
2138int32_t
2139ei_event_scroll_get_discrete_dx(struct ei_event *event);
2140
2147int32_t
2148ei_event_scroll_get_discrete_dy(struct ei_event *event);
2149
2156uint32_t
2157ei_event_keyboard_get_key(struct ei_event *event);
2158
2165bool
2166ei_event_keyboard_get_key_is_press(struct ei_event *event);
2167
2180uint32_t
2181ei_event_touch_get_id(struct ei_event *event);
2182
2190double
2191ei_event_touch_get_x(struct ei_event *event);
2192
2200double
2201ei_event_touch_get_y(struct ei_event *event);
2202
2213bool
2214ei_event_touch_get_is_cancel(struct ei_event *event);
2215
2219
2220#ifdef __cplusplus
2221}
2222#endif
ei_device_keyboard_get_keymap
struct ei_keymap * ei_device_keyboard_get_keymap(struct ei_device *device)
Return the keymap for this device or NULL.
ei_device_get_width
uint32_t ei_device_get_width(struct ei_device *device)
Return the width of the device in mm if the device is of type EI_DEVICE_TYPE_PHYSICAL,...
ei_device_set_user_data
void ei_device_set_user_data(struct ei_device *device, void *user_data)
Set a custom data pointer for this context.
ei_device_get_type
enum ei_device_type ei_device_get_type(struct ei_device *device)
ei_device_get_region_at
struct ei_region * ei_device_get_region_at(struct ei_device *device, double x, double y)
Return the region that contains the given point x/y (in desktop-wide coordinates) or NULL if the coor...
ei_device_close
void ei_device_close(struct ei_device *device)
Notify the server that the client is no longer interested in this device.
ei_device_unref
struct ei_device * ei_device_unref(struct ei_device *device)
Decrease the refcount of this struct by one.
ei_device_get_context
struct ei * ei_device_get_context(struct ei_device *device)
Return the struct ei context this device is associated with.
ei_device_get_seat
struct ei_seat * ei_device_get_seat(struct ei_device *device)
ei_device_get_name
const char * ei_device_get_name(struct ei_device *device)
ei_device_has_capability
bool ei_device_has_capability(struct ei_device *device, enum ei_device_capability cap)
Return true if the device has the requested capability.
ei_device_get_height
uint32_t ei_device_get_height(struct ei_device *device)
Return the height of the device in mm if the device is of type EI_DEVICE_TYPE_PHYSICAL,...
ei_device_ref
struct ei_device * ei_device_ref(struct ei_device *device)
Increase the refcount of this struct by one.
ei_device_get_user_data
void * ei_device_get_user_data(struct ei_device *device)
Return the custom data pointer for this context.
ei_device_get_region
struct ei_region * ei_device_get_region(struct ei_device *device, size_t index)
Obtain a region from a device of type EI_DEVICE_TYPE_VIRTUAL.
ei_keymap_get_fd
int ei_keymap_get_fd(struct ei_keymap *keymap)
Return a memmap-able file descriptor pointing to the keymap used by the device.
ei_keymap_get_user_data
void * ei_keymap_get_user_data(struct ei_keymap *keymap)
ei_keymap_get_size
size_t ei_keymap_get_size(struct ei_keymap *keymap)
ei_keymap_get_type
enum ei_keymap_type ei_keymap_get_type(struct ei_keymap *keymap)
Returns the type for this keymap.
ei_keymap_ref
struct ei_keymap * ei_keymap_ref(struct ei_keymap *keymap)
Increase the refcount of this struct by one.
ei_keymap_unref
struct ei_keymap * ei_keymap_unref(struct ei_keymap *keymap)
Decrease the refcount of this struct by one.
ei_keymap_set_user_data
void ei_keymap_set_user_data(struct ei_keymap *keymap, void *user_data)
ei_keymap_get_device
struct ei_device * ei_keymap_get_device(struct ei_keymap *keymap)
Return the device this keymap belongs to, or NULL if it has not yet been assigned to a device.
ei_keymap_get_context
struct ei_device * ei_keymap_get_context(struct ei_keymap *keymap)
Return the struct ei_device this keymap is associated with.
ei_log_context_get_func
const char * ei_log_context_get_func(struct ei_log_context *ctx)
ei_log_get_priority
enum ei_log_priority ei_log_get_priority(const struct ei *ei)
ei_log_context_get_line
unsigned int ei_log_context_get_line(struct ei_log_context *ctx)
ei_log_context_get_file
const char * ei_log_context_get_file(struct ei_log_context *ctx)
ei_log_priority
ei_log_priority
Definition libei.h:693
ei_log_handler
void(* ei_log_handler)(struct ei *ei, enum ei_log_priority priority, const char *message, struct ei_log_context *context)
The log handler for library logging.
Definition libei.h:740
ei_log_set_priority
void ei_log_set_priority(struct ei *ei, enum ei_log_priority priority)
ei_log_set_handler
void ei_log_set_handler(struct ei *ei, ei_log_handler log_handler)
Change the log handler for this context.
EI_LOG_PRIORITY_INFO
@ EI_LOG_PRIORITY_INFO
Definition libei.h:695
EI_LOG_PRIORITY_DEBUG
@ EI_LOG_PRIORITY_DEBUG
Definition libei.h:694
EI_LOG_PRIORITY_WARNING
@ EI_LOG_PRIORITY_WARNING
Definition libei.h:696
EI_LOG_PRIORITY_ERROR
@ EI_LOG_PRIORITY_ERROR
Definition libei.h:697
ei_event_touch_get_id
uint32_t ei_event_touch_get_id(struct ei_event *event)
For an event of type EI_EVENT_TOUCH_DOWN, EI_EVENT_TOUCH_MOTION, or EI_EVENT_TOUCH_UP,...
ei_event_emulating_get_sequence
uint32_t ei_event_emulating_get_sequence(struct ei_event *event)
For an event of type EI_EVENT_DEVICE_START_EMULATING, return the sequence number set by the EIS imple...
ei_event_scroll_get_dx
double ei_event_scroll_get_dx(struct ei_event *event)
For an event of type EI_EVENT_SCROLL_DELTA return the x scroll distance in logical pixels or mm,...
ei_event_scroll_get_dy
double ei_event_scroll_get_dy(struct ei_event *event)
For an event of type EI_EVENT_SCROLL_DELTA return the y scroll distance in logical pixels or mm,...
ei_event_pointer_get_absolute_x
double ei_event_pointer_get_absolute_x(struct ei_event *event)
For an event of type EI_EVENT_POINTER_MOTION_ABSOLUTE return the x position in logical pixels or mm,...
ei_event_button_get_is_press
bool ei_event_button_get_is_press(struct ei_event *event)
For an event of type EI_EVENT_BUTTON_BUTTON return true if the event is a button press,...
ei_event_scroll_get_stop_y
bool ei_event_scroll_get_stop_y(struct ei_event *event)
For an event of type EI_EVENT_SCROLL_STOP return whether the y axis has stopped scrolling.
ei_event_keyboard_get_xkb_mods_locked
uint32_t ei_event_keyboard_get_xkb_mods_locked(struct ei_event *event)
For an event of type EI_EVENT_KEYBOARD_MODIFIERS, get the mask of currently logically locked modifier...
ei_event_scroll_get_discrete_dy
int32_t ei_event_scroll_get_discrete_dy(struct ei_event *event)
For an event of type EI_EVENT_SCROLL_DISCRETE return the y scroll distance in fractions or multiples ...
ei_event_keyboard_get_key
uint32_t ei_event_keyboard_get_key(struct ei_event *event)
For an event of type EI_EVENT_KEYBOARD_KEY return the key code (as defined in include/linux/input-eve...
ei_event_touch_get_x
double ei_event_touch_get_x(struct ei_event *event)
For an event of type EI_EVENT_TOUCH_DOWN, or EI_EVENT_TOUCH_MOTION, return the x coordinate of the to...
ei_event_keyboard_get_xkb_mods_depressed
uint32_t ei_event_keyboard_get_xkb_mods_depressed(struct ei_event *event)
For an event of type EI_EVENT_KEYBOARD_MODIFIERS, get the mask of currently logically pressed-down mo...
ei_event_touch_get_y
double ei_event_touch_get_y(struct ei_event *event)
For an event of type EI_EVENT_TOUCH_DOWN, or EI_EVENT_TOUCH_MOTION, return the y coordinate of the to...
ei_event_pointer_get_dy
double ei_event_pointer_get_dy(struct ei_event *event)
For an event of type EI_EVENT_POINTER_MOTION return the relative y movement in logical pixels or mm,...
ei_event_touch_get_is_cancel
bool ei_event_touch_get_is_cancel(struct ei_event *event)
For an event of type EI_EVENT_TOUCH_UP return true if the event was cancelled instead of logically re...
ei_event_scroll_get_stop_x
bool ei_event_scroll_get_stop_x(struct ei_event *event)
For an event of type EI_EVENT_SCROLL_CANCEL return whether the x axis has cancelled scrolling.
ei_event_keyboard_get_xkb_mods_latched
uint32_t ei_event_keyboard_get_xkb_mods_latched(struct ei_event *event)
For an event of type EI_EVENT_KEYBOARD_MODIFIERS, get the mask of currently logically latched modifie...
ei_event_scroll_get_discrete_dx
int32_t ei_event_scroll_get_discrete_dx(struct ei_event *event)
For an event of type EI_EVENT_SCROLL_DISCRETE return the x scroll distance in fractions or multiples ...
ei_event_button_get_button
uint32_t ei_event_button_get_button(struct ei_event *event)
For an event of type EI_EVENT_BUTTON_BUTTON return the button code as defined in linux/input-event-co...
ei_event_pointer_get_dx
double ei_event_pointer_get_dx(struct ei_event *event)
For an event of type EI_EVENT_POINTER_MOTION return the relative x movement in logical pixels or mm,...
ei_event_keyboard_get_xkb_group
uint32_t ei_event_keyboard_get_xkb_group(struct ei_event *event)
For an event of type EI_EVENT_KEYBOARD_MODIFIERS, get the current effective group.
ei_event_pointer_get_absolute_y
double ei_event_pointer_get_absolute_y(struct ei_event *event)
For an event of type EI_EVENT_POINTER_MOTION_ABSOLUTE return the y position in logical pixels or mm,...
ei_event_keyboard_get_key_is_press
bool ei_event_keyboard_get_key_is_press(struct ei_event *event)
For an event of type EI_EVENT_KEYBOARD_KEY return true if the event is a key down,...
ei_region_set_user_data
void ei_region_set_user_data(struct ei_region *region, void *user_data)
ei_region_get_physical_scale
double ei_region_get_physical_scale(struct ei_region *region)
Return the physical scale for this region.
ei_region_get_width
uint32_t ei_region_get_width(struct ei_region *region)
ei_region_get_mapping_id
const char * ei_region_get_mapping_id(struct ei_region *region)
Get the unique identifier (representing an external resource) that is attached to this region,...
ei_region_unref
struct ei_region * ei_region_unref(struct ei_region *region)
ei_region_get_user_data
void * ei_region_get_user_data(struct ei_region *region)
ei_region_get_y
uint32_t ei_region_get_y(struct ei_region *region)
ei_region_contains
bool ei_region_contains(struct ei_region *region, double x, double y)
Return true if the point x/y (in desktop-wide coordinates) is within region.
ei_region_get_x
uint32_t ei_region_get_x(struct ei_region *region)
ei_region_convert_point
bool ei_region_convert_point(struct ei_region *region, double *x, double *y)
Convert the point x/y in a desktop-wide coordinate system into the corresponding point relative to th...
ei_region_ref
struct ei_region * ei_region_ref(struct ei_region *region)
ei_region_get_height
uint32_t ei_region_get_height(struct ei_region *region)
ei_seat_set_user_data
void ei_seat_set_user_data(struct ei_seat *seat, void *user_data)
Set a custom data pointer for this context.
ei_seat_get_context
struct ei * ei_seat_get_context(struct ei_seat *seat)
Return the struct ei context this seat is associated with.
ei_seat_bind_capabilities
void ei_seat_bind_capabilities(struct ei_seat *seat,...) __attribute__((sentinel))
Bind this client to the given seat capabilities, terminated by NULL.
ei_seat_get_name
const char * ei_seat_get_name(struct ei_seat *seat)
ei_seat_get_user_data
void * ei_seat_get_user_data(struct ei_seat *seat)
Return the custom data pointer for this context.
ei_seat_ref
struct ei_seat * ei_seat_ref(struct ei_seat *seat)
ei_seat_has_capability
bool ei_seat_has_capability(struct ei_seat *seat, enum ei_device_capability cap)
Return true if the capabilitiy is available on this seat or false otherwise.
ei_seat_unref
struct ei_seat * ei_seat_unref(struct ei_seat *seat)
ei_seat_unbind_capabilities
void ei_seat_unbind_capabilities(struct ei_seat *seat,...) __attribute__((sentinel))
Unbind a seat's capabilities, terminatd by NULL.
ei_device_stop_emulating
void ei_device_stop_emulating(struct ei_device *device)
Notify the EIS implementation that the given device is no longer sending events.
ei_device_start_emulating
void ei_device_start_emulating(struct ei_device *device, uint32_t sequence)
Notify the EIS implementation that the given device is about to start sending events.
ei_touch_get_device
struct ei_device * ei_touch_get_device(struct ei_touch *touch)
ei_touch_down
void ei_touch_down(struct ei_touch *touch, double x, double y)
This function can only be called once on an ei_touch object.
ei_device_scroll_cancel
void ei_device_scroll_cancel(struct ei_device *device, bool cancel_x, bool cancel_y)
Generate a scroll cancel event on a device with the EI_DEVICE_CAP_SCROLL capability.
ei_device_pointer_motion_absolute
void ei_device_pointer_motion_absolute(struct ei_device *device, double x, double y)
Generate an absolute motion event on a device with the EI_DEVICE_CAP_POINTER_ABSOLUTE capability.
ei_touch_up
void ei_touch_up(struct ei_touch *touch)
Release this touch.
ei_device_scroll_delta
void ei_device_scroll_delta(struct ei_device *device, double x, double y)
Generate a smooth (pixel-precise) scroll event on a device with the EI_DEVICE_CAP_SCROLL capability.
ei_touch_get_user_data
void * ei_touch_get_user_data(struct ei_touch *touch)
Return the custom data pointer for this context.
ei_device_scroll_stop
void ei_device_scroll_stop(struct ei_device *device, bool stop_x, bool stop_y)
Generate a scroll stop event on a device with the EI_DEVICE_CAP_SCROLL capability.
ei_device_button_button
void ei_device_button_button(struct ei_device *device, uint32_t button, bool is_press)
Generate a button event on a device with the EI_DEVICE_CAP_BUTTON capability.
ei_touch_ref
struct ei_touch * ei_touch_ref(struct ei_touch *touch)
Increase the refcount of this struct by one.
ei_touch_motion
void ei_touch_motion(struct ei_touch *touch, double x, double y)
Move this touch to the new coordinates.
ei_device_keyboard_key
void ei_device_keyboard_key(struct ei_device *device, uint32_t keycode, bool is_press)
Generate a key event on a device with the EI_DEVICE_CAP_KEYBOARD capability.
ei_device_frame
void ei_device_frame(struct ei_device *device, uint64_t time)
Generate a frame event to group the current set of events into a logical hardware event.
ei_device_scroll_discrete
void ei_device_scroll_discrete(struct ei_device *device, int32_t x, int32_t y)
Generate a discrete scroll event on a device with the EI_DEVICE_CAP_SCROLL capability.
ei_touch_unref
struct ei_touch * ei_touch_unref(struct ei_touch *touch)
Decrease the refcount of this struct by one.
ei_device_touch_new
struct ei_touch * ei_device_touch_new(struct ei_device *device)
Initiate a new touch on a device with the EI_DEVICE_CAP_TOUCH capability.
ei_touch_cancel
void ei_touch_cancel(struct ei_touch *touch)
Cancel this touch.
ei_device_pointer_motion
void ei_device_pointer_motion(struct ei_device *device, double x, double y)
Generate a relative motion event on a device with the EI_DEVICE_CAP_POINTER capability.
ei_touch_set_user_data
void ei_touch_set_user_data(struct ei_touch *touch, void *user_data)
Set a custom data pointer for this context.
ei_setup_backend_socket
int ei_setup_backend_socket(struct ei *ei, const char *socketpath)
Set this ei context to use the socket backend.
ei_is_sender
bool ei_is_sender(struct ei *ei)
Returns true if the context is was created with ei_new_sender() or false otherwise.
ei_ping_ref
struct ei_ping * ei_ping_ref(struct ei_ping *ei_ping)
Increase the refcount of this struct by one.
ei_clock_set_now_func
void ei_clock_set_now_func(struct ei *, ei_clock_now_func func)
Override the function that returns the current time ei_now().
ei_new_receiver
struct ei * ei_new_receiver(void *user_data)
Create a new receiver ei context.
ei_dispatch
void ei_dispatch(struct ei *ei)
Main event dispatching function.
ei_disconnect
void ei_disconnect(struct ei *ei)
Disconnect the current ei context from the EIS implementation.
ei_get_fd
int ei_get_fd(struct ei *ei)
libei keeps a single file descriptor for all events.
ei_set_user_data
void ei_set_user_data(struct ei *ei, void *user_data)
Set a custom data pointer for this context.
ei_ping_get_id
uint64_t ei_ping_get_id(struct ei_ping *ping)
Return a unique, increasing id for this struct.
ei_event_get_seat
struct ei_seat * ei_event_get_seat(struct ei_event *event)
Return the seat from this event.
ei_event_pong_get_ping
struct ei_ping * ei_event_pong_get_ping(struct ei_event *event)
Returns the associated ei_ping struct with this event.
ei_device_type
ei_device_type
The device type determines what the device represents.
Definition libei.h:250
ei_new_ping
struct ei_ping * ei_new_ping(struct ei *ei)
Create a new ei_ping object to trigger a round trip to the EIS implementation.
ei_unref
struct ei * ei_unref(struct ei *ei)
Decrease the refcount of this struct by one.
ei_new_sender
struct ei * ei_new_sender(void *user_data)
Create a new sender ei context.
ei_now
uint64_t ei_now(struct ei *ei)
ei_event_get_device
struct ei_device * ei_event_get_device(struct ei_event *event)
Return the device from this event.
ei_peek_event
struct ei_event * ei_peek_event(struct ei *ei)
Returns the next event in the internal event queue (or NULL) without removing that event from the que...
ei_setup_backend_fd
int ei_setup_backend_fd(struct ei *ei, int fd)
Initialize the ei context on the given socket file descriptor.
ei_keymap_type
ei_keymap_type
The set of supported keymap types for a struct ei_keymap.
Definition libei.h:310
ei_clock_now_func
uint64_t(* ei_clock_now_func)(struct ei *ei)
Optional override function for ei_now().
Definition libei.h:777
ei_ping_get_user_data
void * ei_ping_get_user_data(struct ei_ping *ei_ping)
Return the custom data pointer for this struct.
ei_event_get_time
uint64_t ei_event_get_time(struct ei_event *event)
Return the time for the event of type EI_EVENT_FRAME in microseconds.
ei_device_capability
ei_device_capability
The set of supported capabilities.
Definition libei.h:278
ei_ping
void ei_ping(struct ei_ping *ping)
Issue a roundtrip request to the EIS implementation, resulting in an EI_EVENT_PONG event when this ro...
ei_get_event
struct ei_event * ei_get_event(struct ei *ei)
Return the next event from the event queue, removing it from the queue.
ei_event_unref
struct ei_event * ei_event_unref(struct ei_event *event)
Release resources associated with this event.
ei_event_get_type
enum ei_event_type ei_event_get_type(struct ei_event *event)
ei_event_type
ei_event_type
This enum is not exhaustive, future versions of this library may add new event types.
Definition libei.h:326
ei_ping_set_user_data
void ei_ping_set_user_data(struct ei_ping *ei_ping, void *user_data)
Set a custom data pointer for this struct.
ei_ping_unref
struct ei_ping * ei_ping_unref(struct ei_ping *ei_ping)
Decrease the refcount of this struct by one.
ei_configure_name
void ei_configure_name(struct ei *ei, const char *name)
Set the name for this client.
ei_event_type_to_string
const char * ei_event_type_to_string(enum ei_event_type)
This is a debugging helper to return a string of the name of the event type, or NULL if the event typ...
ei_ref
struct ei * ei_ref(struct ei *ei)
Increase the refcount of this struct by one.
ei_new
struct ei * ei_new(void *user_data)
This is an alias for ei_new_sender.
ei_get_user_data
void * ei_get_user_data(struct ei *ei)
Return the custom data pointer for this context.
EI_DEVICE_TYPE_PHYSICAL
@ EI_DEVICE_TYPE_PHYSICAL
Definition libei.h:252
EI_DEVICE_TYPE_VIRTUAL
@ EI_DEVICE_TYPE_VIRTUAL
Definition libei.h:251
EI_KEYMAP_TYPE_XKB
@ EI_KEYMAP_TYPE_XKB
A libxkbcommon-compatible XKB keymap.
Definition libei.h:314
EI_DEVICE_CAP_POINTER
@ EI_DEVICE_CAP_POINTER
The device can send relative motion events.
Definition libei.h:282
EI_DEVICE_CAP_SCROLL
@ EI_DEVICE_CAP_SCROLL
The device can send scroll events.
Definition libei.h:298
EI_DEVICE_CAP_POINTER_ABSOLUTE
@ EI_DEVICE_CAP_POINTER_ABSOLUTE
The device can send absolute motion events.
Definition libei.h:286
EI_DEVICE_CAP_TOUCH
@ EI_DEVICE_CAP_TOUCH
The device can send touch events.
Definition libei.h:294
EI_DEVICE_CAP_BUTTON
@ EI_DEVICE_CAP_BUTTON
The device can send button events.
Definition libei.h:302
EI_DEVICE_CAP_KEYBOARD
@ EI_DEVICE_CAP_KEYBOARD
The device can send keyboard events.
Definition libei.h:290
EI_EVENT_SEAT_REMOVED
@ EI_EVENT_SEAT_REMOVED
The server has removed a seat previously available to this client.
Definition libei.h:372
EI_EVENT_POINTER_MOTION_ABSOLUTE
@ EI_EVENT_POINTER_MOTION_ABSOLUTE
An absolute motion event with absolute position within the device's regions or size,...
Definition libei.h:519
EI_EVENT_POINTER_MOTION
@ EI_EVENT_POINTER_MOTION
A relative motion event with delta coordinates in logical pixels or mm, depending on the device type.
Definition libei.h:510
EI_EVENT_SCROLL_DELTA
@ EI_EVENT_SCROLL_DELTA
A vertical and/or horizontal scroll event with logical-pixels or mm precision, depending on the devic...
Definition libei.h:536
EI_EVENT_DEVICE_START_EMULATING
@ EI_EVENT_DEVICE_START_EMULATING
The server is about to send events for a device.
Definition libei.h:493
EI_EVENT_SCROLL_DISCRETE
@ EI_EVENT_SCROLL_DISCRETE
A vertical and/or horizontal scroll event with a discrete range in logical scroll steps,...
Definition libei.h:558
EI_EVENT_SCROLL_STOP
@ EI_EVENT_SCROLL_STOP
An ongoing scroll sequence stopped.
Definition libei.h:543
EI_EVENT_SEAT_ADDED
@ EI_EVENT_SEAT_ADDED
The server has added a seat available to this client.
Definition libei.h:360
EI_EVENT_FRAME
@ EI_EVENT_FRAME
"Hardware" frame event.
Definition libei.h:477
EI_EVENT_DEVICE_REMOVED
@ EI_EVENT_DEVICE_REMOVED
The server has removed a device belonging to this client.
Definition libei.h:395
EI_EVENT_DEVICE_RESUMED
@ EI_EVENT_DEVICE_RESUMED
The client may send events.
Definition libei.h:407
EI_EVENT_SYNC
@ EI_EVENT_SYNC
This event represents a synchronization request (ping) from the EIS implementation.
Definition libei.h:467
EI_EVENT_BUTTON_BUTTON
@ EI_EVENT_BUTTON_BUTTON
A button press or release event.
Definition libei.h:527
EI_EVENT_DEVICE_ADDED
@ EI_EVENT_DEVICE_ADDED
The server has added a device for this client.
Definition libei.h:383
EI_EVENT_TOUCH_DOWN
@ EI_EVENT_TOUCH_DOWN
Event for a single touch set down on the device's logical surface.
Definition libei.h:577
EI_EVENT_DEVICE_PAUSED
@ EI_EVENT_DEVICE_PAUSED
Any events sent from this device will be discarded until the next resume.
Definition libei.h:403
EI_EVENT_CONNECT
@ EI_EVENT_CONNECT
The server has approved the connection to this client.
Definition libei.h:335
EI_EVENT_PONG
@ EI_EVENT_PONG
Returned in response to ei_ping().
Definition libei.h:456
EI_EVENT_DEVICE_STOP_EMULATING
@ EI_EVENT_DEVICE_STOP_EMULATING
The server stopped emulating events on this device, see EIS_EVENT_DEVICE_START_EMULATING.
Definition libei.h:501
EI_EVENT_TOUCH_UP
@ EI_EVENT_TOUCH_UP
Event for a single touch released from the device's logical surface.
Definition libei.h:585
EI_EVENT_KEYBOARD_KEY
@ EI_EVENT_KEYBOARD_KEY
A key press or release event.
Definition libei.h:566
EI_EVENT_TOUCH_MOTION
@ EI_EVENT_TOUCH_MOTION
Event for a single currently-down touch changing position (or other properties).
Definition libei.h:593
EI_EVENT_DISCONNECT
@ EI_EVENT_DISCONNECT
The server has disconnected this client - all resources left to reference this server are now obsolet...
Definition libei.h:349
EI_EVENT_SCROLL_CANCEL
@ EI_EVENT_SCROLL_CANCEL
An ongoing scroll sequence was cancelled.
Definition libei.h:550
EI_EVENT_KEYBOARD_MODIFIERS
@ EI_EVENT_KEYBOARD_MODIFIERS
The server has changed the modifier state on the device's keymap.
Definition libei.h:447
ei_device
A single device to generate input events from.
ei_event
An event received from the EIS implementation.
ei_keymap
An keymap for a device with the EI_DEVICE_CAP_KEYBOARD capability.
ei_ping
A callback struct returned by ei_new_ping() to handle roundtrips to the EIS implementation.
ei_region
A rectangular region, defined by an x/y offset and a width and a height.
ei_seat
A logical seat for a group of devices.
ei_touch
A single touch initiated by a sender context.
ei
The main context to interact with libei.