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xkb: add hook to allow/deny AccessX key repeat 

The xserver generates the key repeat by itself.

But when used with another server processing inputs first (e.g. a
Wayland compositor), the other server may be busy dealing with some
other things and not queue up key release events in time.

Add a vfunc in XkbSrvInfo to possibly add a check before re-emitting a
keypress event in the AccessX timer handler, so that the key repeat has
a chance to be denied if the server processing the input is not ready.

Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
This commit is contained in:
Olivier Fourdan 2016-03-09 10:31:13 +01:00
parent 3735ab965a
commit fda5675f9d
2 changed files with 9 additions and 1 deletions
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6
include/xkbsrv.h
View File

@ -142,6 +142,10 @@ typedef struct _XkbFilter {
struct _XkbFilter *next;
} XkbFilterRec, *XkbFilterPtr;
typedef Bool (*XkbSrvCheckRepeatPtr) (DeviceIntPtr dev,
struct _XkbSrvInfo * /* xkbi */ ,
unsigned /* keycode */);
typedef struct _XkbSrvInfo {
XkbStateRec prev_state;
XkbStateRec state;
@ -189,6 +193,8 @@ typedef struct _XkbSrvInfo {
int szFilters;
XkbFilterPtr filters;
XkbSrvCheckRepeatPtr checkRepeat;
} XkbSrvInfoRec, *XkbSrvInfoPtr;
#define XkbSLI_IsDefault (1L<<0)

4
xkb/xkbAccessX.c
View File

@ -89,6 +89,7 @@ AccessXInit(DeviceIntPtr keybd)
xkbi->repeatKeyTimer = NULL;
xkbi->krgTimer = NULL;
xkbi->beepTimer = NULL;
xkbi->checkRepeat = NULL;
ctrls->repeat_delay = XkbDfltRepeatDelay;
ctrls->repeat_interval = XkbDfltRepeatInterval;
ctrls->debounce_delay = 300;
@ -317,7 +318,8 @@ AccessXRepeatKeyExpire(OsTimerPtr timer, CARD32 now, void *arg)
if (xkbi->repeatKey == 0)
return 0;
AccessXKeyboardEvent(dev, ET_KeyPress, xkbi->repeatKey, TRUE);
if (xkbi->checkRepeat == NULL || xkbi->checkRepeat (dev, xkbi, xkbi->repeatKey))
AccessXKeyboardEvent(dev, ET_KeyPress, xkbi->repeatKey, TRUE);
return xkbi->desc->ctrls->repeat_interval;
}