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/*
* Copyright 1985, 1987, 1990, 1998 The Open Group
* Copyright 2008 Dan Nicholson
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* Except as contained in this notice, the names of the authors or their
* institutions shall not be used in advertising or otherwise to promote the
* sale, use or other dealings in this Software without prior written
* authorization from the authors.
*/
/************************************************************
* Copyright (c) 1993 by Silicon Graphics Computer Systems, Inc.
*
* Permission to use, copy, modify, and distribute this
* software and its documentation for any purpose and without
* fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright
* notice and this permission notice appear in supporting
* documentation, and that the name of Silicon Graphics not be
* used in advertising or publicity pertaining to distribution
* of the software without specific prior written permission.
* Silicon Graphics makes no representation about the suitability
* of this software for any purpose. It is provided "as is"
* without any express or implied warranty.
*
* SILICON GRAPHICS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
* GRAPHICS BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH
* THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
********************************************************/
/*
* Copyright © 2009 Daniel Stone
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Author: Daniel Stone <daniel@fooishbar.org>
*/
#ifndef _XKBCOMMON_H_
#define _XKBCOMMON_H_
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <xkbcommon/xkbcommon-names.h>
#include <xkbcommon/xkbcommon-keysyms.h>
typedef uint32_t xkb_keycode_t;
typedef uint32_t xkb_keysym_t;
typedef uint32_t xkb_mod_index_t;
typedef uint32_t xkb_mod_mask_t;
typedef uint32_t xkb_group_index_t;
typedef uint32_t xkb_led_index_t;
#define XKB_MOD_INVALID (0xffffffff)
#define XKB_GROUP_INVALID (0xffffffff)
#define XKB_KEYCODE_INVALID (0xffffffff)
#define XKB_LED_INVALID (0xffffffff)
#define XKB_KEYCODE_MAX (0xffffffff - 1)
#define xkb_keycode_is_legal_ext(kc) (kc <= XKB_KEYCODE_MAX)
#define xkb_keycode_is_legal_x11(kc) (kc >= 8 && kc <= 255)
/**
* Names to compile a keymap with, also known as RMLVO. These names together
* should be the primary identifier for a keymap.
*/
struct xkb_rule_names {
const char *rules;
const char *model;
const char *layout;
const char *variant;
const char *options;
};
/**
* Opaque context object; may only be created, accessed, manipulated and
* destroyed through the xkb_context_*() API.
*/
struct xkb_context;
/**
* Opaque keymap object; may only be created, accessed, manipulated and
* destroyed through the xkb_state_*() API.
*/
struct xkb_keymap;
/**
* Opaque state object; may only be created, accessed, manipulated and
* destroyed through the xkb_state_*() API.
*/
struct xkb_state;
#ifdef __cplusplus
extern "C" {
#endif
/*
* Returns the name for a keysym as a string; will return unknown Unicode
* codepoints as "Ua1b2", and other unknown keysyms as "0xabcd1234".
* If the buffer passed is too small, the string is truncated; a size of
* at least 32 bytes is recommended.
*/
void
xkb_keysym_get_name(xkb_keysym_t ks, char *buffer, size_t size);
/*
* See xkb_keysym_get_name comments: this function will accept any string
* from that function.
*/
xkb_keysym_t
xkb_keysym_from_name(const char *s);
/**
* Return the printable representation of the keystring in Unicode/UTF-8.
* The buffer passed must be at least 7 bytes long. The return value
* is the number of bytes written to the buffer. A return value of zero
* means that the keysym does not have a known printable Unicode
* representation, and a return value of -1 means that the buffer was too
* small to contain the return.
*/
int
xkb_keysym_to_utf8(xkb_keysym_t keysym, char *buffer, size_t size);
/**
* Returns the Unicode/UTF-32 representation of the provided keysym, which is
* also compatible with UCS-4. A return value of zero means the keysym does
* not have a known printable Unicode representation.
*/
uint32_t
xkb_keysym_to_utf32(xkb_keysym_t keysym);
/**
* @defgroup context XKB contexts
* Every keymap compilation request must have an XKB context associated with
* it. The context keeps around state such as the include path.
*
* @{
*/
enum xkb_context_flags {
/** Create this context with an empty include path. */
XKB_CONTEXT_NO_DEFAULT_INCLUDES = 1,
};
/**
* Returns a new XKB context, or NULL on failure. If successful, the caller
* holds a reference on the context, and must free it when finished with
* xkb_context_unref().
*/
struct xkb_context *
xkb_context_new(enum xkb_context_flags flags);
/**
* Appends a new entry to the include path used for keymap compilation.
* Returns 1 on success, or 0 if the include path could not be added or is
* inaccessible.
*/
int
xkb_context_include_path_append(struct xkb_context *context, const char *path);
/**
* Appends the default include paths to the context's current include path.
* Returns 1 on success, or 0 if the primary include path could not be
* added.
*/
int
xkb_context_include_path_append_default(struct xkb_context *context);
/**
* Removes all entries from the context's include path, and inserts the
* default paths. Returns 1 on success, or 0 if the primary include path
* could not be added.
*/
int
xkb_context_include_path_reset_defaults(struct xkb_context *context);
/**
* Removes all entries from the context's include path.
*/
void
xkb_context_include_path_clear(struct xkb_context *context);
/**
* Returns the number of include paths currently active in the context.
*/
unsigned int
xkb_context_num_include_paths(struct xkb_context *context);
/**
* Returns the include path at the specified index within the context.
*/
const char *
xkb_context_include_path_get(struct xkb_context *context, unsigned int index);
/**
* Takes a new reference on an XKB context.
*/
struct xkb_context *
xkb_context_ref(struct xkb_context *context);
/**
* Releases a reference on an XKB context, and possibly frees it.
*/
void
xkb_context_unref(struct xkb_context *context);
/** @} */
/**
* @defgroup logging Logging handling
* These functions allow you to manipulate how logging from this library
* will be handled.
*
* @{
*/
enum xkb_log_level {
/** Log critical internal errors only */
XKB_LOG_LEVEL_CRITICAL = 0,
/** Log all errors */
XKB_LOG_LEVEL_ERROR = 1,
/** Log warnings and errors */
XKB_LOG_LEVEL_WARNING = 2,
/** Log information, warnings, and errors */
XKB_LOG_LEVEL_INFO = 3,
/** Log all the things */
XKB_LOG_LEVEL_DEBUG = 4,
};
/**
* Sets the function to be called for logging messages.
* Passing NULL restores the default function, which logs to stderr.
**/
void
xkb_set_log_fn(struct xkb_context *context,
void (*log_fn)(struct xkb_context *context, int priority,
const char *format, va_list args));
/**
* Sets the current logging priority. The value controls which messages
* are logged. The default priority is LOG_ERR.
*
* The environment variable XKB_LOG, if set, overrides the default value
* and may be specified as a priority number or name.
*/
void
xkb_set_log_priority(struct xkb_context *context, enum xkb_log_level priority);
/**
* Returns the current logging priority.
*/
enum xkb_log_level
xkb_get_log_priority(struct xkb_context *context);
/**
* Sets the current logging verbosity, a value from 0 to 10.
*
* The library can generate a number of warnings which are not helpful to
* ordinary users of the library. The verbosity may be increased if more
* information is desired (e.g. when developing a keymap). Defaults to 0.
* The environment variable XKB_VERBOSITY, if set, overrdies the default
* value.
*
* Note that most verbose messages are of priority XKB_LOG_LEVEL_WARNING
* or lower.
*/
void
xkb_set_log_verbosity(struct xkb_context *ctx, int verbosity);
/**
* Returns the current logging verbosity.
*/
int
xkb_get_log_verbosity(struct xkb_context *ctx);
/**
* Retrieves stored data pointer from the context. This might be useful
* to access from callbacks like a custom logging function.
*
* If context is NULL, returns NULL.
**/
void *
xkb_get_user_data(struct xkb_context *context);
/**
* Store custom user data in the context.
*/
void
xkb_set_user_data(struct xkb_context *context, void *user_data);
/** @} */
/**
* @defgroup map Keymap management
* These utility functions allow you to create and deallocate XKB keymaps.
*
* @{
*/
enum xkb_map_compile_flags {
/** Apparently you can't have empty enums. What a drag. */
XKB_MAP_COMPILE_PLACEHOLDER = 0,
};
/**
* The primary keymap entry point: creates a new XKB keymap from a set of
* RMLVO (Rules + Model + Layout + Variant + Option) names.
*
* You should almost certainly be using this and nothing else to create
* keymaps.
*/
struct xkb_keymap *
xkb_map_new_from_names(struct xkb_context *context,
const struct xkb_rule_names *names,
enum xkb_map_compile_flags flags);
enum xkb_keymap_format {
/** The current/classic XKB text format, as generated by xkbcomp -xkb. */
XKB_KEYMAP_FORMAT_TEXT_V1 = 1,
};
/**
* Creates an XKB keymap from a full text XKB keymap passed into the
* file.
*/
struct xkb_keymap *
xkb_map_new_from_file(struct xkb_context *context, FILE *file,
enum xkb_keymap_format format,
enum xkb_map_compile_flags flags);
/**
* Creates an XKB keymap from a full text XKB keymap serialized into one
* enormous string.
*/
struct xkb_keymap *
xkb_map_new_from_string(struct xkb_context *context, const char *string,
enum xkb_keymap_format format,
enum xkb_map_compile_flags flags);
/**
* Returns the compiled XKB map as a string which can later be fed back into
* xkb_map_new_from_string to return the exact same keymap.
*/
char *
xkb_map_get_as_string(struct xkb_keymap *keymap);
/**
* Takes a new reference on a keymap.
*/
struct xkb_keymap *
xkb_map_ref(struct xkb_keymap *keymap);
/**
* Releases a reference on a keymap.
*/
void
xkb_map_unref(struct xkb_keymap *keymap);
/** @} */
/**
* @defgroup components XKB state components
* Allows enumeration of state components such as modifiers and groups within
* the current keymap.
*
* @{
*/
/**
* Returns the number of modifiers active in the keymap.
*/
xkb_mod_index_t
xkb_map_num_mods(struct xkb_keymap *keymap);
/**
* Returns the name of the modifier specified by 'idx', or NULL if invalid.
*/
const char *
xkb_map_mod_get_name(struct xkb_keymap *keymap, xkb_mod_index_t idx);
/**
* Returns the index of the modifier specified by 'name', or XKB_MOD_INVALID.
*/
xkb_mod_index_t
xkb_map_mod_get_index(struct xkb_keymap *keymap, const char *name);
/**
* Returns the number of groups active in the keymap.
*/
xkb_group_index_t
xkb_map_num_groups(struct xkb_keymap *keymap);
/**
* Returns the name of the group specified by 'idx', or NULL if invalid.
*/
const char *
xkb_map_group_get_name(struct xkb_keymap *keymap, xkb_group_index_t idx);
/**
* Returns the index of the group specified by 'name', or XKB_GROUP_INVALID.
*/
xkb_group_index_t
xkb_map_group_get_index(struct xkb_keymap *keymap, const char *name);
/**
* Returns the number of groups active for the specified key.
*/
xkb_group_index_t
xkb_key_num_groups(struct xkb_keymap *keymap, xkb_keycode_t key);
/**
* Returns 1 if the key should repeat, or 0 otherwise.
*/
int
xkb_key_repeats(struct xkb_keymap *keymap, xkb_keycode_t key);
/**
* Returns the number of LEDs in the given map.
*/
xkb_led_index_t
xkb_map_num_leds(struct xkb_keymap *keymap);
/**
* Returns the name of the LED specified by 'idx', or NULL if invalid.
*/
const char *
xkb_map_led_get_name(struct xkb_keymap *keymap, xkb_led_index_t idx);
/**
* Returns the index of the LED specified by 'name', or XKB_LED_INVALID.
*/
xkb_led_index_t
xkb_map_led_get_index(struct xkb_keymap *keymap, const char *name);
/** @} */
/**
* @defgroup state XKB state objects
* Creation, destruction and manipulation of keyboard state objects,
* representing modifier and group state.
*
* @{
*/
/**
* Returns a new XKB state object for use with the given keymap, or NULL on
* failure.
*/
struct xkb_state *
xkb_state_new(struct xkb_keymap *keymap);
/**
* Takes a new reference on a state object.
*/
struct xkb_state *
xkb_state_ref(struct xkb_state *state);
/**
* Unrefs and potentially deallocates a state object; the caller must not
* use the state object after calling this.
*/
void
xkb_state_unref(struct xkb_state *state);
/**
* Get the keymap from which the state object was created. Does not take
* a new reference on the map; you must explicitly reference it yourself
* if you plan to use it beyond the lifetime of the state.
*/
struct xkb_keymap *
xkb_state_get_map(struct xkb_state *state);
enum xkb_key_direction {
XKB_KEY_UP,
XKB_KEY_DOWN,
};
/**
* Updates a state object to reflect the given key being pressed or released.
*/
void
xkb_state_update_key(struct xkb_state *state, xkb_keycode_t key,
enum xkb_key_direction direction);
/**
* Gives the symbols obtained from pressing a particular key with the given
* state. *syms_out will be set to point to an array of keysyms, with the
* return value being the number of symbols in *syms_out. If the return
* value is 0, *syms_out will be set to NULL, as there are no symbols produced
* by this event.
*
* This should be called before xkb_state_update_key.
*/
int
xkb_key_get_syms(struct xkb_state *state, xkb_keycode_t key,
const xkb_keysym_t **syms_out);
/**
* Modifier and group types for state objects. This enum is bitmaskable,
* e.g. (XKB_STATE_DEPRESSED | XKB_STATE_LATCHED) is valid to exclude
* locked modifiers.
*/
enum xkb_state_component {
/** A key holding this modifier or group is currently physically
* depressed; also known as 'base'. */
XKB_STATE_DEPRESSED = (1 << 0),
/** Modifier or group is latched, i.e. will be unset after the next
* non-modifier key press. */
XKB_STATE_LATCHED = (1 << 1),
/** Modifier or group is locked, i.e. will be unset after the key
* provoking the lock has been pressed again. */
XKB_STATE_LOCKED = (1 << 2),
/** Combinatination of depressed, latched, and locked. */
XKB_STATE_EFFECTIVE =
(XKB_STATE_DEPRESSED | XKB_STATE_LATCHED | XKB_STATE_LOCKED),
};
/**
* Match flags for xkb_state_mod_indices_are_active and
* xkb_state_mod_names_are_active, specifying how the conditions for a
* successful match. XKB_STATE_MATCH_NON_EXCLUSIVE is bitmaskable with
* the other modes.
*/
enum xkb_state_match {
/** Returns true if any of the modifiers are active. */
XKB_STATE_MATCH_ANY = (1 << 0),
/** Returns true if all of the modifiers are active. */
XKB_STATE_MATCH_ALL = (1 << 1),
/** Makes matching non-exclusive, i.e. will not return false if a
* modifier not specified in the arguments is active. */
XKB_STATE_MATCH_NON_EXCLUSIVE = (1 << 16),
};
/**
* Updates a state object from a set of explicit masks. This entrypoint is
* really only for window systems and the like, where a master process
* holds an xkb_state, then serializes it over a wire protocol, and clients
* then use the serialization to feed in to their own xkb_state.
*
* All parameters must always be passed, or the resulting state may be
* incoherent.
*
* The serialization is lossy and will not survive round trips; it must only
* be used to feed slave state objects, and must not be used to update the
* master state.
*
* Please do not use this unless you fit the description above.
*/
void
xkb_state_update_mask(struct xkb_state *state, xkb_mod_mask_t base_mods,
xkb_mod_mask_t latched_mods, xkb_mod_mask_t locked_mods,
xkb_group_index_t base_group,
xkb_group_index_t latched_group,
xkb_group_index_t locked_group);
/**
* The counterpart to xkb_state_update_mask, to be used on the server side
* of serialization. Returns a xkb_mod_mask_t representing the given
* component(s) of the state.
*
* This function should not be used in regular clients; please use the
* xkb_state_mod_*_is_active or xkb_state_foreach_active_mod API instead.
*
* Can return NULL on failure.
*/
xkb_mod_mask_t
xkb_state_serialize_mods(struct xkb_state *state,
enum xkb_state_component component);
/**
* The group equivalent of xkb_state_serialize_mods: please see its
* documentation.
*/
xkb_group_index_t
xkb_state_serialize_group(struct xkb_state *state,
enum xkb_state_component component);
/**
* Returns 1 if the modifier specified by 'name' is active in the manner
* specified by 'type', 0 if it is unset, or -1 if the modifier does not
* exist in the map.
*/
int
xkb_state_mod_name_is_active(struct xkb_state *state, const char *name,
enum xkb_state_component type);
/**
* Returns 1 if the modifiers specified by the varargs (treated as
* NULL-terminated pointers to strings) are active in the manner
* specified by 'match', 0 otherwise, or -1 if any of the modifiers
* do not exist in the map.
*/
int
xkb_state_mod_names_are_active(struct xkb_state *state,
enum xkb_state_component type,
enum xkb_state_match match,
...);
/**
* Returns 1 if the modifier specified by 'idx' is active in the manner
* specified by 'type', 0 if it is unset, or -1 if the modifier does not
* exist in the current map.
*/
int
xkb_state_mod_index_is_active(struct xkb_state *state, xkb_mod_index_t idx,
enum xkb_state_component type);
/**
* Returns 1 if the modifier specified by 'idx' is used in the
* translation of the keycode 'key' to the key symbols obtained by
* pressing it (as in xkb_key_get_syms), given the current state.
* Returns 0 otherwise.
*/
int
xkb_key_mod_index_is_consumed(struct xkb_state *state, xkb_keycode_t key,
xkb_mod_index_t idx);
/**
* Returns 1 if the modifiers specified by the varargs (treated as
* xkb_mod_index_t, terminated with XKB_MOD_INVALID) are active in the manner
* specified by 'match' and 'type', 0 otherwise, or -1 if the modifier does not
* exist in the current map.
*/
int
xkb_state_mod_indices_are_active(struct xkb_state *state,
enum xkb_state_component type,
enum xkb_state_match match,
...);
/**
* Returns 1 if the group specified by 'name' is active in the manner
* specified by 'type', 0 if it is unset, or -1 if the group does not
* exist in the current map.
*/
int
xkb_state_group_name_is_active(struct xkb_state *state, const char *name,
enum xkb_state_component type);
/**
* Returns 1 if the group specified by 'idx' is active in the manner
* specified by 'type', 0 if it is unset, or -1 if the group does not
* exist in the current map.
*/
int
xkb_state_group_index_is_active(struct xkb_state *state,
xkb_group_index_t idx,
enum xkb_state_component type);
/**
* Returns 1 if the LED specified by 'name' is active, 0 if it is unset, or
* -1 if the LED does not exist in the current map.
*/
int
xkb_state_led_name_is_active(struct xkb_state *state, const char *name);
/**
* Returns 1 if the LED specified by 'idx' is active, 0 if it is unset, or
* -1 if the LED does not exist in the current map.
*/
int
xkb_state_led_index_is_active(struct xkb_state *state, xkb_led_index_t idx);
/** @} */
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* _XKBCOMMON_H_ */
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