NAME¶
XkbOutOfRangeGroupNumber - Returns the out-of-range group number, represented as
a group index, from the group_info field of an XkbSymMapRec structure
SYNOPSIS¶
unsigned char XkbOutOfRangeGroupNumber (unsigned char
grp_inf);
ARGUMENTS¶
- - grp_inf
- Xkb description of interest
DESCRIPTION¶
XkbOutOfRangeGroupNumber returns the out-of-range group number,
represented as a group index, from the
group_info field of an
XkbSymMapRec structure.
The
group_info field of an XkbSymMapRec is an encoded value containing
the number of groups of symbols bound to the key as well as the specification
of the treatment of out-of-range groups. It is legal for a key to have zero
groups, in which case it also has zero symbols and all events from that key
yield NoSymbol. To obtain the number of groups of symbols bound to the key,
use
XkbKeyNumGroups. To change the number of groups bound to a key, use
XkbChangeTypesOfKey. To obtain a mask that determines the treatment of
out-of-range groups, use
XkbKeyGroupInfo and
XkbOutOfRangeGroupInfo.
The keyboard controls contain a
groups_wrap field specifying the handling
of illegal groups on a global basis. That is, when the user performs an action
causing the effective group to go out of the legal range, the
groups_wrap field specifies how to normalize the effective keyboard
group to a group that is legal for the keyboard as a whole, but there is no
guarantee that the normalized group will be within the range of legal groups
for any individual key. The per-key
group_info field specifies how a
key treats a legal effective group if the key does not have a type specified
for the group of concern. For example, the Enter key usually has just one
group defined. If the user performs an action causing the global keyboard
group to change to Group2, the
group_info field for the Enter key
describes how to handle this situation.
Out-of-range groups for individual keys are mapped to a legal group using the
same options as are used for the overall keyboard group. The particular type
of mapping used is controlled by the bits set in the
group_info flag,
as shown in Table 1.
Table 1 group_info Range Normalization |
|
|
Bits set in group_info |
Normalization method |
|
XkbRedirectIntoRange |
XkbRedirectIntoRange |
XkbClampIntoRange |
XkbClampIntoRange |
none of the above |
XkbWrapIntoRange |
STRUCTURES¶
The KeySymMapRec structure is defined as follows:
#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;
The XkbControlsRec structure is defined as follows:
#define XkbMaxLegalKeyCode 255
#define XkbPerKeyBitArraySize ((XkbMaxLegalKeyCode+1)/8)
typedef struct {
unsigned char mk_dflt_btn; /∗ default button for keyboard driven mouse */
unsigned char num_groups; /∗ number of keyboard groups */
unsigned char groups_wrap; /∗ how to wrap out-of-bounds groups */
XkbModsRec internal; /∗ defines server internal modifiers */
XkbModsRec ignore_lock; /∗ modifiers to ignore when checking for grab */
unsigned int enabled_ctrls; /∗ 1 bit => corresponding boolean control enabled */
unsigned short repeat_delay; /∗ ms delay until first repeat */
unsigned short repeat_interval; /∗ ms delay between repeats */
unsigned short slow_keys_delay; /∗ ms minimum time key must be down to be ok */
unsigned short debounce_delay; /∗ ms delay before key reactivated */
unsigned short mk_delay; /∗ ms delay to second mouse motion event */
unsigned short mk_interval; /∗ ms delay between repeat mouse events */
unsigned short mk_time_to_max; /∗ # intervals until constant mouse move */
unsigned short mk_max_speed; /∗ multiplier for maximum mouse speed */
short mk_curve; /∗ determines mouse move curve type */
unsigned short ax_options; /∗ 1 bit => Access X option enabled */
unsigned short ax_timeout; /∗ seconds until Access X disabled */
unsigned short axt_opts_mask; /∗ 1 bit => options to reset on Access X timeout */
unsigned short axt_opts_values; /∗ 1 bit => turn option on, 0=> off */
unsigned int axt_ctrls_mask; /∗ which bits in enabled_ctrls to modify */
unsigned int axt_ctrls_values; /∗ values for new bits in enabled_ctrls */
unsigned char per_key_repeat[XkbPerKeyBitArraySize]; /∗ per key auto repeat */
} XkbControlsRec, *XkbControlsPtr;
The XkbControlsRec structure is defined as follows:
#define XkbMaxLegalKeyCode 255
#define XkbPerKeyBitArraySize ((XkbMaxLegalKeyCode+1)/8)
typedef struct {
unsigned char mk_dflt_btn; /∗ default button for keyboard driven mouse */
unsigned char num_groups; /∗ number of keyboard groups */
unsigned char groups_wrap; /∗ how to wrap out-of-bounds groups */
XkbModsRec internal; /∗ defines server internal modifiers */
XkbModsRec ignore_lock; /∗ modifiers to ignore when checking for grab */
unsigned int enabled_ctrls; /∗ 1 bit => corresponding boolean control enabled */
unsigned short repeat_delay; /∗ ms delay until first repeat */
unsigned short repeat_interval; /∗ ms delay between repeats */
unsigned short slow_keys_delay; /∗ ms minimum time key must be down to be ok */
unsigned short debounce_delay; /∗ ms delay before key reactivated */
unsigned short mk_delay; /∗ ms delay to second mouse motion event */
unsigned short mk_interval; /∗ ms delay between repeat mouse events */
unsigned short mk_time_to_max; /∗ # intervals until constant mouse move */
unsigned short mk_max_speed; /∗ multiplier for maximum mouse speed */
short mk_curve; /∗ determines mouse move curve type */
unsigned short ax_options; /∗ 1 bit => Access X option enabled */
unsigned short ax_timeout; /∗ seconds until Access X disabled */
unsigned short axt_opts_mask; /∗ 1 bit => options to reset on Access X timeout */
unsigned short axt_opts_values; /∗ 1 bit => turn option on, 0=> off */
unsigned int axt_ctrls_mask; /∗ which bits in enabled_ctrls to modify */
unsigned int axt_ctrls_values; /∗ values for new bits in enabled_ctrls */
unsigned char per_key_repeat[XkbPerKeyBitArraySize]; /∗ per key auto repeat */
} XkbControlsRec, *XkbControlsPtr;
SEE ALSO¶
XkbChangeTypesOfKey(3),
XkbKeyGroupInfo(3),
XkbOutOfRangeGroupInfo(3)