head	1.1;
branch	1.1.1;
access;
symbols
	netbsd-11-0-RC7:1.1.1.6
	libX11-1-8-13:1.1.1.7
	netbsd-11-0-RC6:1.1.1.6
	netbsd-11-0-RC5:1.1.1.6
	netbsd-11-0-RC4:1.1.1.6
	netbsd-11-0-RC3:1.1.1.6
	netbsd-11-0-RC2:1.1.1.6
	netbsd-11-0-RC1:1.1.1.6
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	libX11-1-8-12:1.1.1.6
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	libX11-1-8-10:1.1.1.6
	libX11-1-8-9:1.1.1.6
	netbsd-8-3-RELEASE:1.1.1.3
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	netbsd-10-0-RELEASE:1.1.1.6
	netbsd-10-0-RC6:1.1.1.6
	netbsd-10-0-RC5:1.1.1.6
	netbsd-10-0-RC4:1.1.1.6
	netbsd-10-0-RC3:1.1.1.6
	netbsd-10-0-RC2:1.1.1.6
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	libX11-1-8-7:1.1.1.6
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	libX11-1-8-1:1.1.1.5
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	libX11-1-7-1:1.1.1.4
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	riastradh-xf86-video-intel-2-7-1-pre-2-21-15:1.1.1.3
	libX11-1-6-2:1.1.1.3
	riastradh-drm2:1.1.1.3.0.8
	riastradh-drm2-base:1.1.1.3
	netbsd-6-1-3-RELEASE:1.1.1.3
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	libX11-1-6-0:1.1.1.3
	libX11-1-5-99-902:1.1.1.3
	netbsd-6-1:1.1.1.3.0.6
	netbsd-6-0-2-RELEASE:1.1.1.3
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	netbsd-5-base:1.1.1.1
	libX11-1-1-4:1.1.1.1
	xorg:1.1.1;
locks; strict;
comment	@.\" @;


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desc
@@


1.1
log
@Initial revision
@
text
@.\" Copyright (c) 1999 - Sun Microsystems, Inc.
.\" All rights reserved.
.\" 
.\" 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, and/or sell copies of the Software, and to permit persons
.\" to whom the Software is furnished to do so, provided that the above
.\" copyright notice(s) and this permission notice appear in all copies of
.\" the Software and that both the above copyright notice(s) and this
.\" permission notice appear in supporting documentation.
.\" 
.\" 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
.\" OF THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
.\" HOLDERS INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR 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.
.\" 
.\" Except as contained in this notice, the name of a copyright holder
.\" shall not be used in advertising or otherwise to promote the sale, use
.\" or other dealings in this Software without prior written authorization
.\" of the copyright holder.
.\"
.TH XkbKeyAction __libmansuffix__ __xorgversion__ "XKB FUNCTIONS"
.SH NAME
XkbKeyAction \-  Returns the key action
.SH SYNOPSIS
.B XkbAction XkbKeyAction
(
.I xkb,
.I keycode,
.I idx
)
.br
      XkbDescPtr \fIxkb\fP\^;
.br
      KeyCode \fIkeycode\fP\^;
.br
      int \fIidx\fP\^;
.if n .ti +5n
.if t .ti +.5i
.SH ARGUMENTS
.TP
.I \- xkb
Xkb description of interest
.TP
.I \- keycode
keycode of interest
.TP
.I \- idx
index for group and shift level
.SH DESCRIPTION
.LP
A key action defines the effect key presses and releases have on the internal 
state of the server. For 
example, the expected key action associated with pressing the Shift key is to 
set the Shift modifier. 
There is zero or one key action associated with each keysym bound to each key.

Just as the entire list of key symbols for the keyboard mapping is held in the
.I syms 
field of the client map, the entire list of key actions for the keyboard mapping 
is held in the 
.I acts 
array of the server map. The total size of 
.I acts 
is specified by 
.I size_acts, 
and the number of entries is specified by 
.I num_acts. 

The 
.I key_acts 
array, indexed by keycode, describes the actions associated with a key. The
.I key_acts 
array has 
.I min_key_code 
unused entries at the start to allow direct indexing using a keycode. If a
.I key_acts 
entry is zero, it means the key does not have any actions associated with it. If 
an entry is not zero, 
the entry represents an index into the 
.I acts 
field of the server map, much as the 
.I offset 
field of a KeySymMapRec structure is an index into the 
.I syms 
field of the client map. 

The reason the 
.I acts 
field is a linear list of XkbActions is to reduce the memory consumption 
associated with a keymap. 
Because Xkb allows individual keys to have multiple shift levels and a different 
number of groups per 
key, a single two-dimensional array of KeySyms would potentially be very large 
and sparse. Instead, Xkb 
provides a small two-dimensional array of XkbActions for each key. To store all 
of these individual 
arrays, Xkb concatenates each array together in the 
.I acts 
field of the server map.

The key action structures consist only of fields of type char or unsigned char. 
This is done to 
optimize data transfer when the server sends bytes over the wire. If the fields 
are anything but bytes, 
the server has to sift through all of the actions and swap any nonbyte fields. 
Because they consist of 
nothing but bytes, it can just copy them out.

.I XkbKeyAction 
returns the key action indexed by 
.I idx 
in the two-dimensional array of key actions associated with the key 
corresponding to 
.I keycode.idx 
may be computed from the group and shift level of interest as follows:
.nf

    idx = group_index * key_width + shift_level
.fi    
.SH STRUCTURES
.LP
The KeySymMapRec structure is defined as follows:
.nf

    #define XkbNumKbdGroups             4
    #define XkbMaxKbdGroup              (XkbNumKbdGroups-1)
    
    typedef struct {                    /\(** map to keysyms for a single keycode 
*/
        unsigned char       kt_index[XkbNumKbdGroups];  /\(** key type index for 
each group */
        unsigned char       group_info; /\(** # of groups and out of range group 
handling */
        unsigned char       width;      /\(** max # of shift levels for key */
        unsigned short      offset;     /\(** index to keysym table in syms array 
*/
} XkbSymMapRec, *XkbSymMapPtr;

.fi
@


1.1.1.1
log
@initial import of libX11-1.1.4
@
text
@@


1.1.1.2
log
@initial import of libX11-1.3.3
@
text
@d1 3
a3 2
.\" Copyright 1999 Sun Microsystems, Inc.  All rights reserved.
.\"
d5 23
a27 17
.\" 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.
a32 1
.HP
d34 11
a44 3
.BI "(\^XkbDescPtr " "xkb" "\^,"
.BI "KeyCode " "keycode" "\^,"
.BI "int " "idx" "\^);"
@


1.1.1.3
log
@initial import of libX11-1.4.1:
- remove support for building without XCB
- many man page updates
- many random bug fixes
- several new nls aliases (need to enable these yet.)
@
text
@d1 1
a1 1
.\" Copyright 1999 Oracle and/or its affiliates. All rights reserved.
@


1.1.1.4
log
@initial import of libX11-1.7.1
@
text
@d122 1
a122 1
    typedef struct {                    /\&* map to keysyms for a single keycode 
d124 1
a124 1
        unsigned char       kt_index[XkbNumKbdGroups];  /\&* key type index for 
d126 1
a126 1
        unsigned char       group_info; /\&* # of groups and out of range group 
d128 2
a129 2
        unsigned char       width;      /\&* max # of shift levels for key */
        unsigned short      offset;     /\&* index to keysym table in syms array 
@


1.1.1.5
log
@initial import of libX11-1.8.1
@
text
@d122 6
a127 3
    typedef struct {                    /\&* map to keysyms for a single keycode */
        unsigned char       kt_index[XkbNumKbdGroups];  /\&* key type index for each group */
        unsigned char       group_info; /\&* # of groups and out of range group handling */
d129 2
a130 1
        unsigned short      offset;     /\&* index to keysym table in syms array */
@


1.1.1.6
log
@initial import of libX11-1.8.2
@
text
@d1 1
a1 1
.\" Copyright (c) 1999, Oracle and/or its affiliates.
d35 1
a35 1
.I xkb
d38 1
a38 1
.I keycode
d41 1
a41 1
.I idx
@


1.1.1.7
log
@initial import of libX11-1.8.13
@
text
@d45 4
a48 4
A key action defines the effect key presses and releases have on the internal
state of the server. For
example, the expected key action associated with pressing the Shift key is to
set the Shift modifier.
d52 10
a61 10
.I syms
field of the client map, the entire list of key actions for the keyboard mapping
is held in the
.I acts
array of the server map. The total size of
.I acts
is specified by
.I size_acts,
and the number of entries is specified by
.I num_acts.
d63 2
a64 2
The
.I key_acts
d66 3
a68 3
.I key_acts
array has
.I min_key_code
d70 23
a92 23
.I key_acts
entry is zero, it means the key does not have any actions associated with it. If
an entry is not zero,
the entry represents an index into the
.I acts
field of the server map, much as the
.I offset
field of a KeySymMapRec structure is an index into the
.I syms
field of the client map.

The reason the
.I acts
field is a linear list of XkbActions is to reduce the memory consumption
associated with a keymap.
Because Xkb allows individual keys to have multiple shift levels and a different
number of groups per
key, a single two-dimensional array of KeySyms would potentially be very large
and sparse. Instead, Xkb
provides a small two-dimensional array of XkbActions for each key. To store all
of these individual
arrays, Xkb concatenates each array together in the
.I acts
d95 6
a100 6
The key action structures consist only of fields of type char or unsigned char.
This is done to
optimize data transfer when the server sends bytes over the wire. If the fields
are anything but bytes,
the server has to sift through all of the actions and swap any nonbyte fields.
Because they consist of
d103 6
a108 6
.I XkbKeyAction
returns the key action indexed by
.I idx
in the two-dimensional array of key actions associated with the key
corresponding to
.I keycode.idx
d113 1
a113 1
.fi
d121 1
a121 1

@