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/* $XConsortium: EventUtil.c,v 1.10 93/08/27 16:27:23 kaleb Exp $ */
/********************************************************
Copyright 1988 by Hewlett-Packard Company
Copyright 1987, 1988, 1989 by Digital Equipment Corporation, Maynard, Massachusetts,
and the Massachusetts Institute of Technology, Cambridge, Massachusetts
Copyright 1993 by Sun Microsystems, Inc. Mountain View, CA.
Permission to use, copy, modify, and distribute this software
and its documentation for any purpose and without fee is hereby
granted, provided that the above copyright notice appear in all
copies and that both that copyright notice and this permission
notice appear in supporting documentation, and that the names of
Hewlett-Packard, Digital, M.I.T., or Sun not be used in advertising or
publicity pertaining to distribution of the software without specific,
written prior permission.
DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
SOFTWARE.
SUN DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FIT-
NESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SUN BE LI-
ABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH
THE USE OR PERFORMANCE OF THIS SOFTWARE.
********************************************************/
#include "IntrinsicI.h"
#include "PassivGraI.h"
#include "StringDefs.h"
static XContext perWidgetInputContext = 0;
void _XtFreePerWidgetInput(w, pwi)
Widget w;
XtPerWidgetInput pwi;
{
LOCK_PROCESS;
XDeleteContext(XtDisplay(w),
(Window)w,
perWidgetInputContext);
XtFree((char *)pwi);
UNLOCK_PROCESS;
}
/*
* This routine gets the passive list associated with the widget
* from the context manager.
*/
#if NeedFunctionPrototypes
XtPerWidgetInput _XtGetPerWidgetInput(
Widget widget,
_XtBoolean create
)
#else
XtPerWidgetInput _XtGetPerWidgetInput(widget, create)
Widget widget;
Boolean create;
#endif
{
XtPerWidgetInput pwi = NULL;
Display *dpy = widget->core.screen->display;
LOCK_PROCESS;
if (! perWidgetInputContext)
perWidgetInputContext = XUniqueContext();
if (XFindContext(dpy,
(Window)widget,
perWidgetInputContext,
(XPointer *)&pwi) &&
create)
{
pwi = (XtPerWidgetInput)
XtMalloc((unsigned) sizeof(XtPerWidgetInputRec));
pwi->focusKid = NULL;
pwi->queryEventDescendant = NULL;
pwi->focalPoint = XtUnrelated;
pwi->keyList =
pwi->ptrList = NULL;
pwi->haveFocus =
pwi->map_handler_added =
pwi->realize_handler_added =
pwi->active_handler_added = FALSE;
XtAddCallback(widget, XtNdestroyCallback,
_XtDestroyServerGrabs, (XtPointer)pwi);
(void) XSaveContext(dpy,
(Window)widget,
perWidgetInputContext,
(char *) pwi);
}
UNLOCK_PROCESS;
return pwi;
}
void _XtFillAncestorList(listPtr, maxElemsPtr, numElemsPtr, start, breakWidget)
Widget **listPtr;
int *maxElemsPtr, *numElemsPtr;
Widget start, breakWidget;
{
#define CACHESIZE 16
Cardinal i;
Widget w;
Widget *trace = *listPtr;
/* First time in, allocate the ancestor list */
if (trace == NULL)
{
trace = (Widget *) XtMalloc(CACHESIZE * sizeof(Widget));
*maxElemsPtr = CACHESIZE;
}
/* First fill in the ancestor list */
trace[0] = start;
for (i = 1, w = XtParent(start);
w != NULL && !XtIsShell(trace[i-1]) && trace[i-1] != breakWidget;
w = XtParent(w), i++) {
if (i == *maxElemsPtr) {
/* This should rarely happen, but if it does it'll probably
happen again, so grow the ancestor list */
*maxElemsPtr += CACHESIZE;
trace = (Widget *) XtRealloc((char*)trace,
sizeof(Widget) * (*maxElemsPtr));
}
trace[i] = w;
}
*listPtr = trace;
*numElemsPtr = i;
#undef CACHESIZE
}
Widget _XtFindRemapWidget(event, widget, mask, pdi)
XEvent *event;
Widget widget;
EventMask mask;
XtPerDisplayInput pdi;
{
Widget dspWidget = widget;
if (!pdi->traceDepth || !(widget == pdi->trace[0]))
{
_XtFillAncestorList(&pdi->trace, &pdi->traceMax,
&pdi->traceDepth, widget, NULL);
pdi->focusWidget = NULL; /* invalidate the focus
cache */
}
if (mask & (KeyPressMask | KeyReleaseMask))
dspWidget = _XtProcessKeyboardEvent((XKeyEvent*)event, widget, pdi);
else if (mask &(ButtonPressMask | ButtonReleaseMask))
dspWidget = _XtProcessPointerEvent((XButtonEvent*)event, widget,pdi);
return dspWidget;
}
void _XtUngrabBadGrabs(event, widget, mask, pdi)
XEvent *event;
Widget widget;
EventMask mask;
XtPerDisplayInput pdi;
{
XKeyEvent * ke = (XKeyEvent *) event;
if (mask & (KeyPressMask | KeyReleaseMask))
{
if (IsServerGrab(pdi->keyboard.grabType) &&
!_XtOnGrabList(pdi->keyboard.grab.widget,
pdi->grabList))
XtUngrabKeyboard(widget, ke->time);
}
else
{
if (IsServerGrab(pdi->pointer.grabType) &&
!_XtOnGrabList(pdi->pointer.grab.widget,
pdi->grabList))
XtUngrabPointer(widget, ke->time);
}
}
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