libxkbcommon/src/xkb-priv.h

/*
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 © 2012 Intel Corporation
 *
 * 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 XKB_PRIV_H
#define XKB_PRIV_H

#include <stdbool.h>
#include <string.h>
#include <strings.h>
#include <X11/extensions/XKB.h>
#include <X11/X.h>

#include "xkbcommon/xkbcommon.h"
#include "utils.h"
#include "darray.h"

/* From XKM.h */
#define	XkmKeymapFile		22
#define	XkmRulesFile		24

#define	XkmTypesIndex		0
#define	XkmCompatMapIndex	1
#define	XkmSymbolsIndex		2
#define	XkmKeyNamesIndex	4
#define	XkmGeometryIndex	5

#define	XkmTypesMask		(1<<0)
#define	XkmCompatMapMask	(1<<1)
#define	XkmSymbolsMask		(1<<2)
#define	XkmKeyNamesMask		(1<<4)
#define XkmGeometryMask         (1<<5)

#define	XkmKeymapRequired	(XkmCompatMapMask|XkmKeyNamesMask|XkmSymbolsMask|XkmTypesMask)
#define	XkmKeymapOptional	((XkmTypesMask|XkmGeometryMask)&(~XkmKeymapRequired))
#define	XkmKeymapLegal		(XkmKeymapRequired|XkmKeymapOptional)

/**
 * Legacy names for the components of an XKB keymap, also known as KcCGST.
 */
struct xkb_component_names {
    char *keymap;
    char *keycodes;
    char *types;
    char *compat;
    char *symbols;
};

struct xkb_any_action {
    uint8_t   type;
    uint8_t   data[7];
};

struct xkb_mod_action {
    uint8_t         type;
    uint8_t         flags;
    uint8_t         mask;
    uint8_t         real_mods;
    uint16_t        vmods;
};

struct xkb_group_action {
    uint8_t         type;
    uint8_t         flags;
    int16_t         group;
};

struct xkb_iso_action {
    uint8_t         type;
    uint8_t         flags;
    uint8_t         mask;
    uint8_t         real_mods;
    uint8_t         group;
    uint8_t         affect;
    uint16_t        vmods;
};

struct xkb_controls_action {
    uint8_t         type;
    uint8_t         flags;
    uint32_t        ctrls;
};

struct xkb_device_button_action {
    uint8_t         type;
    uint8_t         flags;
    uint8_t         count;
    uint8_t         button;
    uint8_t         device;
};

struct xkb_device_valuator_action {
    uint8_t         type;
    uint8_t         device;
    uint8_t         v1_what;
    uint8_t         v1_index;
    uint8_t         v1_value;
    uint8_t         v2_what;
    uint8_t         v2_index;
    uint8_t         v2_value;
};

struct xkb_pointer_default_action {
    uint8_t         type;
    uint8_t         flags;
    uint8_t         affect;
    uint8_t         value;
};

struct xkb_switch_screen_action {
    uint8_t         type;
    uint8_t         flags;
    uint8_t         screen;
};

struct xkb_redirect_key_action {
    uint8_t		type;
    xkb_keycode_t	new_key;
    uint8_t		mods_mask;
    uint8_t		mods;
    uint16_t		vmods_mask;
    uint16_t		vmods;
};

struct xkb_pointer_action {
    uint8_t	type;
    uint8_t	flags;
    uint16_t	x;
    uint16_t	y;
};

struct xkb_message_action {
    uint8_t	type;
    uint8_t	flags;
    uint8_t	message[6];
};

struct xkb_pointer_button_action {
    uint8_t	type;
    uint8_t	flags;
    uint8_t	count;
    uint8_t	button;
};

union xkb_action {
    struct xkb_any_action             any;
    struct xkb_mod_action             mods;
    struct xkb_group_action           group;
    struct xkb_iso_action             iso;
    struct xkb_controls_action        ctrls;
    struct xkb_device_button_action   devbtn;
    struct xkb_device_valuator_action devval;
    struct xkb_pointer_default_action dflt;
    struct xkb_switch_screen_action   screen;
    struct xkb_redirect_key_action    redirect; /* XXX wholly unnecessary? */
    struct xkb_pointer_action         ptr; /* XXX delete for DeviceValuator */
    struct xkb_pointer_button_action  btn; /* XXX delete for DeviceBtn */
    struct xkb_message_action         msg; /* XXX just delete */
    unsigned char                     type;
};

struct xkb_mods {
        uint32_t        mask;   /* effective mods */
        uint32_t        vmods;
        uint8_t         real_mods;
};

struct xkb_kt_map_entry {
        int            active;
        uint16_t        level;
        struct xkb_mods     mods;
};

struct xkb_key_type {
    struct xkb_mods             mods;
    uint16_t                num_levels;
    darray(struct xkb_kt_map_entry) map;
    struct xkb_mods *             preserve;
    const char              *name;
    const char              **level_names;
};

struct xkb_sym_interpret {
    xkb_keysym_t    sym;
    unsigned char   flags;
    unsigned char   match;
    uint8_t         mods;
    uint32_t        virtual_mod;
    union xkb_action act;
};

struct xkb_compat_map {
    darray(struct xkb_sym_interpret) sym_interpret;
    struct xkb_mods              groups[XkbNumKbdGroups];
};

struct xkb_sym_map {
	unsigned char	 kt_index[XkbNumKbdGroups];
	unsigned char	 group_info;
	unsigned char	 width;
        int              *sym_index; /* per level/group index into 'syms' */
        unsigned int     *num_syms; /* per level/group */
        xkb_keysym_t     *syms;
        unsigned int     size_syms; /* size of 'syms' */
};

struct xkb_client_map {
    darray(struct xkb_key_type) types;
    darray(struct xkb_sym_map) key_sym_map;
    unsigned char *modmap;
};

struct xkb_behavior {
	unsigned char	type;
	unsigned char	data;
};

struct xkb_server_map {
    unsigned short      num_acts;
    unsigned short      size_acts;

    unsigned char *     explicit;

    union xkb_action          *acts;
    struct xkb_behavior         *behaviors;
    unsigned short      *key_acts;
    uint32_t            vmods[XkbNumVirtualMods]; /* vmod -> mod mapping */
    uint32_t            *vmodmap; /* key -> vmod mapping */
};


struct xkb_indicator_map {
	unsigned char	flags;
	unsigned char	which_groups;
	unsigned char	groups;
	unsigned char	which_mods;
	struct xkb_mods	mods;
	unsigned int	ctrls;
};

struct xkb_indicator {
	struct xkb_indicator_map	maps[XkbNumIndicators];
};

struct xkb_key_name {
	char	name[XkbKeyNameLength];
};

struct xkb_key_alias {
	char	real[XkbKeyNameLength];
	char	alias[XkbKeyNameLength];
};

struct xkb_names {
    const char            *vmods[XkbNumVirtualMods];
    const char            *indicators[XkbNumIndicators];
    const char            *groups[XkbNumKbdGroups];

    darray(struct xkb_key_name) keys;
    darray(struct xkb_key_alias) key_aliases;
};

struct xkb_controls {
	unsigned char	num_groups;
	unsigned char	groups_wrap;
	struct xkb_mods	internal;
	struct xkb_mods	ignore_lock;
	unsigned int	enabled_ctrls;
	unsigned short	repeat_delay;
	unsigned short	repeat_interval;
	unsigned short	slow_keys_delay;
	unsigned short	debounce_delay;
	unsigned short	ax_options;
	unsigned short	ax_timeout;
	unsigned short	axt_opts_mask;
	unsigned short	axt_opts_values;
	unsigned int	axt_ctrls_mask;
	unsigned int	axt_ctrls_values;
	unsigned char	*per_key_repeat;
};

/* Common keyboard description structure */
struct xkb_keymap {
    struct xkb_context  *ctx;

    unsigned int        refcnt;
    unsigned short      flags;
    xkb_keycode_t       min_key_code;
    xkb_keycode_t       max_key_code;

    struct xkb_controls *      ctrls;
    struct xkb_server_map *    server;
    struct xkb_client_map *    map;
    struct xkb_indicator *     indicators;
    struct xkb_names *        names;
    struct xkb_compat_map *    compat;
};

#define XkbNumGroups(g)             ((g) & 0x0f)
#define XkbOutOfRangeGroupInfo(g)   ((g) & 0xf0)
#define XkbOutOfRangeGroupAction(g) ((g) & 0xc0)
#define XkbOutOfRangeGroupNumber(g) (((g) & 0x30) >> 4)
#define XkbSetGroupInfo(g, w, n)    (((w) & 0xc0) | (((n) & 3) << 4) | ((g) & 0x0f))
#define XkbSetNumGroups(g, n)       (((g) & 0xf0) | ((n) & 0x0f))

#define XkbKeyGroupInfo(d, k) \
    (darray_item((d)->map->key_sym_map, k).group_info)
#define XkbKeyNumGroups(d, k) \
    (XkbNumGroups(darray_item((d)->map->key_sym_map, k).group_info))
#define XkbKeyGroupWidth(d, k, g) \
    (XkbKeyType(d, k, g)->num_levels)
#define XkbKeyGroupsWidth(d, k) \
    (darray_item((d)->map->key_sym_map, k).width)
#define XkbKeyTypeIndex(d, k, g) \
    (darray_item((d)->map->key_sym_map, k).kt_index[g & 0x3])
#define XkbKeyType(d, k, g) \
    (&darray_item((d)->map->types, XkbKeyTypeIndex(d, k, g)))
#define XkbKeyNumSyms(d, k, g, sl) \
    (darray_item((d)->map->key_sym_map, k).num_syms[(g * XkbKeyGroupsWidth(d, k)) + sl])
#define XkbKeySym(d, k, n) \
    (&darray_item((d)->map->key_sym_map, k).syms[n])
#define XkbKeySymOffset(d, k, g, sl) \
    (darray_item((d)->map->key_sym_map, k).sym_index[(g * XkbKeyGroupsWidth(d, k)) + sl])
#define XkbKeySymEntry(d, k, g, sl) \
    (XkbKeySym(d, k, XkbKeySymOffset(d, k, g, sl)))
#define XkbKeyHasActions(d, k) \
    ((d)->server->key_acts[k] != 0)
#define XkbKeyNumActions(d, k) \
    (XkbKeyHasActions(d, k) ? \
     (XkbKeyGroupsWidth(d, k) * XkbKeyNumGroups(d, k)) : \
     1)
#define XkbKeyActionsPtr(d, k) \
    (&(d)->server->acts[(d)->server->key_acts[k]])
#define XkbKeyAction(d, k, n) \
    (XkbKeyHasActions(d, k) ? &XkbKeyActionsPtr(d, k)[n] : NULL)
#define XkbKeyActionEntry(d, k, sl, g) \
    (XkbKeyHasActions(d, k) ? \
     XkbKeyAction(d, k, ((XkbKeyGroupsWidth(d, k) * (g)) + (sl))) : \
     NULL)

#define XkbKeycodeInRange(d, k) \
    (((k) >= (d)->min_key_code) && ((k) <= (d)->max_key_code))
#define XkbNumKeys(d) \
    ((d)->max_key_code - (d)->min_key_code + 1)

struct xkb_state {
	xkb_group_index_t base_group; /**< depressed */
	xkb_group_index_t latched_group;
	xkb_group_index_t locked_group;
        xkb_group_index_t group; /**< effective */

	xkb_mod_mask_t base_mods; /**< depressed */
	xkb_mod_mask_t latched_mods;
	xkb_mod_mask_t locked_mods;
	xkb_mod_mask_t mods; /**< effective */

        uint32_t        leds;

        int refcnt;
        void *filters;
        int num_filters;
        struct xkb_keymap *keymap;
};

typedef uint32_t xkb_atom_t;

#define XKB_ATOM_NONE 0

xkb_atom_t
xkb_atom_intern(struct xkb_context *ctx, const char *string);

char *
xkb_atom_strdup(struct xkb_context *ctx, xkb_atom_t atom);

const char *
xkb_atom_text(struct xkb_context *ctx, xkb_atom_t atom);

extern unsigned int
xkb_key_get_group(struct xkb_state *state, xkb_keycode_t key);

extern unsigned int
xkb_key_get_level(struct xkb_state *state, xkb_keycode_t key,
                  unsigned int group);

extern int
xkb_key_get_syms_by_level(struct xkb_keymap *keymap, xkb_keycode_t key,
                          unsigned int group, unsigned int level,
                          const xkb_keysym_t **syms_out);

/*
 * Canonicalises component names by prepending the relevant component from
 * 'old' to the one in 'names' when the latter has a leading '+' or '|', and
 * by replacing a '%' with the relevant component, e.g.:
 *
 * names        old           output
 * ------------------------------------------
 * +bar         foo           foo+bar
 * |quux        baz           baz|quux
 * foo+%|baz    bar           foo+bar|baz
 *
 * If a component in names needs to be modified, the existing value will be
 * free()d, and a new one allocated with malloc().
 */
void
xkb_canonicalise_components(struct xkb_component_names *names,
                            const struct xkb_component_names *old);

/**
 * Deprecated entrypoint for legacy users who need to be able to compile
 * XKB keymaps by KcCGST (Keycodes + Compat + Geometry + Symbols + Types)
 * names.
 *
 * You should not use this unless you are the X server.  This entrypoint
 * may well disappear in future releases.  Please, please, don't use it.
 *
 * Geometry will be ignored since xkbcommon does not support it in any way.
 */
struct xkb_keymap *
xkb_map_new_from_kccgst(struct xkb_context *ctx,
                        const struct xkb_component_names *kccgst,
                        enum xkb_map_compile_flags flags);

extern int
xkb_context_take_file_id(struct xkb_context *ctx);

extern bool
XkbcComputeEffectiveMap(struct xkb_keymap *keymap, struct xkb_key_type *type,
                        unsigned char *map_rtrn);

extern int
XkbcInitCanonicalKeyTypes(struct xkb_keymap *keymap, unsigned which,
                          int keypadVMod);

extern unsigned
_XkbcKSCheckCase(xkb_keysym_t sym);

#define _XkbKSLower (1 << 0)
#define _XkbKSUpper (1 << 1)

#define XkbcKSIsLower(k) (_XkbcKSCheckCase(k) & _XkbKSLower)
#define XkbcKSIsUpper(k) (_XkbcKSCheckCase(k) & _XkbKSUpper)

#define XkbKSIsKeypad(k) (((k) >= XKB_KEY_KP_Space) && ((k) <= XKB_KEY_KP_Equal))

#endif /* XKB_PRIV_H */