319 lines
11 KiB
Groff
319 lines
11 KiB
Groff
'\" t
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.\" Copyright 1999 Oracle and/or its affiliates. All rights reserved.
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.\"
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.\" Permission is hereby granted, free of charge, to any person obtaining a
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.\" copy of this software and associated documentation files (the "Software"),
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.\" to deal in the Software without restriction, including without limitation
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.\" the rights to use, copy, modify, merge, publish, distribute, sublicense,
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.\" and/or sell copies of the Software, and to permit persons to whom the
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.\" Software is furnished to do so, subject to the following conditions:
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.\"
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.\" The above copyright notice and this permission notice (including the next
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.\" paragraph) shall be included in all copies or substantial portions of the
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.\" Software.
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.\"
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.\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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.\" IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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.\" FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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.\" THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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.\" LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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.\" FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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.\" DEALINGS IN THE SOFTWARE.
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.\"
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.TH XkbKeyNumGroups __libmansuffix__ __xorgversion__ "XKB FUNCTIONS"
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.SH NAME
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XkbKeyNumGroups \- Returns the number of groups of symbols bound to the key
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corresponding to keycode
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.SH SYNOPSIS
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.HP
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.B int XkbKeyNumGroups
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.BI "(\^XkbDescPtr " "xkb" "\^,"
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.BI "KeyCode " "keycode" "\^);"
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.if n .ti +5n
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.if t .ti +.5i
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.SH ARGUMENTS
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.TP
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.I \- xkb
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Xkb description of interest
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.TP
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.I \- keycode
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keycode of interest
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.SH DESCRIPTION
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.LP
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The
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.I group_info
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field of an XkbSymMapRec is an encoded value containing the number of groups of
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symbols bound to the
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key as well as the specification of the treatment of out-of-range groups. It is
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legal for a key to
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have zero groups, in which case it also has zero symbols and all events from
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that key yield NoSymbol.
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To obtain the number of groups of symbols bound to the key, use
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.I XkbKeyNumGroups.
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To change the number of groups bound to a key, use
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.I XkbChangeTypesOfKey.
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To obtain a mask that determines the treatment of out-of-range groups, use
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.I XkbKeyGroupInfo
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and
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.I XkbOutOfRangeGroupInfo.
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The keyboard controls contain a
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.I groups_wrap
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field specifying the handling of illegal groups on a global basis. That is, when
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the user performs an
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action causing the effective group to go out of the legal range, the
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.I groups_wrap
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field specifies how to normalize the effective keyboard group to a group that is
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legal for the
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keyboard as a whole, but there is no guarantee that the normalized group will be
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within the range of
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legal groups for any individual key. The per-key
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.I group_info
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field specifies how a key treats a legal effective group if the key does not
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have a type specified for
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the group of concern. For example, the Enter key usually has just one group
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defined. If the user
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performs an action causing the global keyboard group to change to Group2, the
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.I group_info
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field for the Enter key describes how to handle this situation.
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Out-of-range groups for individual keys are mapped to a legal group using the
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same options as are used
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for the overall keyboard group. The particular type of mapping used is
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controlled by the bits set in
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the
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.I group_info
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flag, as shown in Table 1.
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.bp
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.TS
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c s
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l l
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l l.
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Table 1 group_info Range Normalization
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_
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Bits set in group_info Normalization method
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_
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XkbRedirectIntoRange XkbRedirectIntoRange
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XkbClampIntoRange XkbClampIntoRange
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none of the above XkbWrapIntoRange
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.TE
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.LP
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.\"--- Chapter 10
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The Xkb extension is composed of two parts: a server extension, and a
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client-side X library extension.
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This chapter discusses functions used to modify controls effecting the behavior
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of the server portion
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of the Xkb extension. X Library Controls discusses functions used to modify
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controls that affect only
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the behavior of the client portion of the extension; those controls are known as
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Library Controls.
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Xkb contains control features that affect the entire keyboard, known as global
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keyboard controls. Some
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of the controls may be selectively enabled and disabled; these controls are
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known as the
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.I Boolean Controls.
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Boolean Controls can be turned on or off under program control and can also be
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automatically set to an
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on or off condition when a client program exits. The remaining controls, known
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as the
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.I Non-Boolean Controls,
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are always active. The XkbControlsRec structure describes the current state of
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most of the global
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controls and the attributes effecting the behavior of each of these Xkb
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features. This chapter
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describes the Xkb controls and how to manipulate them.
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There are two possible components for each of the Boolean Controls: attributes
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describing how the
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control should work, and a state describing whether the behavior as a whole is
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enabled or disabled.
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The attributes and state for most of these controls are held in the
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XkbControlsRec structure.
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You can manipulate the Xkb controls individually, via convenience functions, or
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as a whole. To treat
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them as a group, modify an XkbControlsRec structure to describe all of the
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changes to be made, and
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then pass that structure and appropriate flags to an Xkb library function, or
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use a
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XkbControlsChangesRec to reduce network traffic. When using a convenience
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function to manipulate one
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control individually, you do not use an XkbControlsRec structure directly.
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The Xkb controls are grouped as shown in Table 2.
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.ad l
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.TS
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c s s
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l l l
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lw(2i) l l.
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Table 2 Xkb Keyboard Controls
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_
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Type of Control Control Name Boolean Control?
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_
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T{
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Controls for enabling and \%disabling other controls
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T} EnabledControls No
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\^ AutoReset No
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_
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T{
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Control for bell behavior
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T} AudibleBell Boolean
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_
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T{
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Controls for repeat key behavior
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T} PerKeyRepeat No
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\^ RepeatKeys Boolean
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\^ DetectableAutorepeat Boolean
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_
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T{
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Controls for \%keyboard overlays
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T} Overlay1 Boolean
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\^ Overlay2 Boolean
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_
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T{
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Controls for using the mouse from the keyboard
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T} MouseKeys Boolean
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\^ MouseKeysAccel Boolean
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_
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T{
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Controls for better keyboard access by
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physically impaired persons
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T} AccessXFeedback Boolean
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\^ AccessXKeys Boolean
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\^ AccessXTimeout Boolean
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\^ BounceKeys Boolean
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\^ SlowKeys Boolean
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\^ StickyKeys Boolean
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_
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T{
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Controls for general keyboard mapping
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T} GroupsWrap No
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\^ IgnoreGroupLock Boolean
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\^ IgnoreLockMods No
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\^ InternalMods No
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_
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.TE
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.ad n
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.LP
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The individual categories and controls are described first, together with
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functions for manipulating
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them.
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.SH STRUCTURES
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.LP
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The KeySymMapRec structure is defined as follows:
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.nf
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#define XkbNumKbdGroups 4
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#define XkbMaxKbdGroup (XkbNumKbdGroups-1)
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typedef struct { /\(** map to keysyms for a single keycode
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*/
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unsigned char kt_index[XkbNumKbdGroups]; /\(** key type index for
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each group */
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unsigned char group_info; /\(** # of groups and out of range group
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handling */
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unsigned char width; /\(** max # of shift levels for key */
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unsigned short offset; /\(** index to keysym table in syms array
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*/
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} XkbSymMapRec, *XkbSymMapPtr;
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.fi
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.LP
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The XkbControlsRec structure is defined as follows:
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.nf
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#define XkbMaxLegalKeyCode 255
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#define XkbPerKeyBitArraySize ((XkbMaxLegalKeyCode+1)/8)
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typedef struct {
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unsigned char mk_dflt_btn; /\(** default button for keyboard driven
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mouse */
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unsigned char num_groups; /\(** number of keyboard groups */
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unsigned char groups_wrap; /\(** how to wrap out-of-bounds groups */
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XkbModsRec internal; /\(** defines server internal modifiers
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*/
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XkbModsRec ignore_lock; /\(** modifiers to ignore when checking
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for grab */
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unsigned int enabled_ctrls; /\(** 1 bit => corresponding boolean
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control enabled */
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unsigned short repeat_delay; /\(** ms delay until first repeat */
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unsigned short repeat_interval; /\(** ms delay between repeats */
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unsigned short slow_keys_delay; /\(** ms minimum time key must be down to
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be ok */
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unsigned short debounce_delay; /\(** ms delay before key reactivated */
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unsigned short mk_delay; /\(** ms delay to second mouse motion
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event */
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unsigned short mk_interval; /\(** ms delay between repeat mouse
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events */
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unsigned short mk_time_to_max; /\(** # intervals until constant mouse
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move */
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unsigned short mk_max_speed; /\(** multiplier for maximum mouse speed
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*/
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short mk_curve; /\(** determines mouse move curve type */
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unsigned short ax_options; /\(** 1 bit => Access X option enabled */
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unsigned short ax_timeout; /\(** seconds until Access X disabled */
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unsigned short axt_opts_mask; /\(** 1 bit => options to reset on Access
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X timeout */
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unsigned short axt_opts_values; /\(** 1 bit => turn option on, 0=> off */
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unsigned int axt_ctrls_mask; /\(** which bits in enabled_ctrls to
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modify */
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unsigned int axt_ctrls_values; /\(** values for new bits in
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enabled_ctrls */
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unsigned char per_key_repeat[XkbPerKeyBitArraySize]; /\(** per key auto
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repeat */
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} XkbControlsRec, *XkbControlsPtr;
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.fi
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.nf
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The XkbControlsRec structure is defined as follows:
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#define XkbMaxLegalKeyCode 255
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#define XkbPerKeyBitArraySize ((XkbMaxLegalKeyCode+1)/8)
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typedef struct {
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unsigned char mk_dflt_btn; /\(** default button for keyboard driven
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mouse */
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unsigned char num_groups; /\(** number of keyboard groups */
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unsigned char groups_wrap; /\(** how to wrap out-of-bounds groups */
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XkbModsRec internal; /\(** defines server internal modifiers
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*/
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XkbModsRec ignore_lock; /\(** modifiers to ignore when checking
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for grab */
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unsigned int enabled_ctrls; /\(** 1 bit => corresponding boolean
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control enabled */
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unsigned short repeat_delay; /\(** ms delay until first repeat */
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unsigned short repeat_interval; /\(** ms delay between repeats */
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unsigned short slow_keys_delay; /\(** ms minimum time key must be down to
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be ok */
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unsigned short debounce_delay; /\(** ms delay before key reactivated */
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unsigned short mk_delay; /\(** ms delay to second mouse motion
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event */
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unsigned short mk_interval; /\(** ms delay between repeat mouse
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events */
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unsigned short mk_time_to_max; /\(** # intervals until constant mouse
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move */
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unsigned short mk_max_speed; /\(** multiplier for maximum mouse speed
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*/
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short mk_curve; /\(** determines mouse move curve type */
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unsigned short ax_options; /\(** 1 bit => Access X option enabled */
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unsigned short ax_timeout; /\(** seconds until Access X disabled */
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unsigned short axt_opts_mask; /\(** 1 bit => options to reset on Access
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X timeout */
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unsigned short axt_opts_values; /\(** 1 bit => turn option on, 0=> off */
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unsigned int axt_ctrls_mask; /\(** which bits in enabled_ctrls to
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modify */
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unsigned int axt_ctrls_values; /\(** values for new bits in
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enabled_ctrls */
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unsigned char per_key_repeat[XkbPerKeyBitArraySize]; /\(** per key auto
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repeat */
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} XkbControlsRec, *XkbControlsPtr;
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.fi
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.SH "SEE ALSO"
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.BR XkbChangeTypesOfKey (__libmansuffix__),
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.BR XkbKeyGroupInfo (__libmansuffix__),
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.BR XkbOutOfRangeGroupInfo. (__libmansuffix__)
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