This section discusses the effects of explicitly changing indicators depending upon different settings in the indicator map. See Tables 1 and Table 2 for information on the effects of the indicator map fields when explicit changes are made.
| Table 1 XkbIndicatorMapRec which_groups and groups, |
| Indicator Drives Keyboard |
| which_groups New State Effect on Keyboard Group State |
| XkbIM_UseNone On or Off No effect |
| XkbIM_UseBase On or Off No effect |
| XkbIM_UseLatched On T{ |
| The groups field is treated as a group mask. The keyboard group latch is changed |
| to the lowest numbered |
| group specified in groups; if groups is empty, the keyboard group latch is |
| changed to zero. |
| T} |
| XkbIM_UseLatched Off T{ |
| The groups field is treated as a group mask. If the indicator is explicitly |
| extinguished, keyboard group |
| latch is changed to the lowest numbered group not specified in groups; if groups |
| is zero, the keyboard |
| group latch is set to the index of the highest legal keyboard group. |
| T} |
| XkbIM_UseLocked or |
| XkbIM_UseEffective On T{ |
| If the groups mask is empty, group is not changed; otherwise, the locked |
| keyboard group is changed to the |
| lowest numbered group specified in groups. |
| T} |
| XkbIM_UseLocked or |
| XkbIM_UseEffective Off T{ |
| Locked keyboard group is changed to the lowest numbered group that is not |
| specified in the groups mask, or |
| to Group1 if the groups mask contains all keyboard groups. |
| T} |
| Table 2 XkbIndicatorMapRec which_mods and mods, |
| Indicator Drives Keyboard |
| which_mods New State Effect on Keyboard Modifiers |
| XkbIM_UseNone or XkbIM_UseBase On or Off No Effect |
| XkbIM_UseLatched On T{ |
| Any modifiers specified in the mask field of mods are added to the latched |
| modifiers. |
| T} |
| XkbIM_UseLatched Off T{ |
| Any modifiers specified in the mask field of mods are removed from the latched |
| modifiers. |
| T} |
| XkbIM_UseLocked, XkbIM_UseCompat, or XkbIM_UseEffective On T{ |
| Any modifiers specified in the mask field of mods are added to the locked |
| modifiers. |
| T} |
| XkbIM_UseLocked Off T{ |
| Any modifiers specified in the mask field of mods are removed from the locked |
| modifiers. |
| T} |
| XkbIM_UseCompat or XkbIM_UseEffective Off T{ |
| Any modifiers specified in the mask field of mods are removed from both the |
| locked and latched modifiers. |
| T} |
If XkbIM_LEDDrivesKB
is set and XkbIM_NoExplicit is not, and if you call a function that updates
the server's image of the indicator map (such as XkbSetIndicatorMap or
XkbSetNamedIndicator), Xkb changes the keyboard state and controls to
reflect the other fields of the
indicator map. If you attempt to explicitly change the value of an indicator
for which XkbIM_LEDDrivesKB is absent or for which XkbIM_NoExplicit is
present, keyboard state or controls are unaffected.
If neither XkbIM_NoAutomatic nor XkbIM_NoExplicit is set in an indicator
map, Xkb honors any request to change the state of the indicator, but
the new state might be immediately superseded by automatic changes to
the indicator state if the keyboard state or controls change.
The effects of changing an indicator that drives the keyboard are cumulative; it is possible for a single change to affect keyboard group, modifiers, and controls simultaneously.
If you change an indicator for which both the XkbIM_LEDDrivesKB and XkbIM_NoAutomatic flags are specified, Xkb applies the keyboard changes specified in the other indicator map fields and changes the indicator to reflect the state that was explicitly requested. The indicator remains in the new state until it is explicitly changed again.
If the XkbIM_NoAutomatic flag is not set and XkbIM_LEDDrivesKB is set, Xkb applies the changes specified in the other indicator map fields and sets the state of the indicator to the values specified by the indicator map. Note that it is possible in this case for the indicator to end up in a different state than the one that was explicitly requested. For example, Xkb does not extinguish an indicator with which_mods of XkbIM_UseBase and mods of Shift if, at the time Xkb processes the request to extinguish the indicator, one of the Shift keys is physically depressed.
If you explicitly light an indicator for which XkbIM_LEDDrivesKB is set, Xkb enables all of the boolean controls specified in the ctrls field of its indicator map. Explicitly extinguishing such an indicator causes Xkb to disable all of the boolean controls specified in ctrls.
For each bit set in the which parameter, XkbSetIndicatorMap sends the corresponding indicator map from the desc parameter to the server.