xkb

bookmarks:

docs:

http://www.charvolant.org/~doug/xkb/html/index.html

http://pascal.tsu.ru/en/xkb/

http://people.freedesktop.org/~alanc/xkb/

• http://freedesktop.org/Software/LibXklavier

Differences between the behavior of ps/2 and usb keyboards:

Basically disadvantages of the ps/2 (linux driver?):

• the [Pause] key generates Release immediately
• on error (rectangle problem) some release event is lost.

Things which i want to test:

• actions/controls ... enable repeat w/ a key sequence
• messages ....the 'MultiMedia' keys should really send a message (to all interested windows), a mixer could use it !

Messages are an interesting idea: key events (under X) arrive to these windows:

• the focused one,
• the one w/ active Grab,
• and to all listening on XKB messsages, if the action (of the key) is to send a message

mouse emulation

• how to reset? (i.e. release all mouse buttons 'locked')

Advantages of soft repetition vs hard

• soft survives pressing a modifier !! see (x + shift) xxxxXXXXxxxxx in X, in windows: xxxxx
• interaction ?

there is a tower of ->CtrlProc 'methods' which end in disabling xf86Info.autorepeat which prevents repeated HW events from entering the queue !!! (so xf86Events/xf86PostKbdEvent)

soft repetition: when we release the last how is it done?? modifiers don't interrupt. how come? but they don't repeat, otoh.

resizing core keysym map:

modifiers map is always 256 long! b/c KeyClassRec has CARD8 modifierMap[MAP_LENGTH]; #define MAP_LENGTH 256

XkbChangeKeycodeRange makes it not full! when i increase the max_keycode xkb->map->modmap is just necessary!

SetKeySymsMap ->

xkb/xkbInit.c

xkb/xkbUtils.c

dix/devices.c

XKB pipeline

ProcessKeyboardEvent -> XkbProcessKeyboardEvent

-> plugin

-> AccessXFilterReleaseEvent

plugin -> AccessXFilterReleaseEvent

AccessXFilterReleaseEvent ->

XkbProcessKeyboardEvent ->

Data

Display -> xkbi (= dpy->xkb_info;) ->

XkbInfoRec

• xlib_ctrls
• changes !!
• desc

XkbInfoRec