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-rw-r--r--libXt/src/Keyboard.c1732
1 files changed, 866 insertions, 866 deletions
diff --git a/libXt/src/Keyboard.c b/libXt/src/Keyboard.c
index 4970d2d01..c8ba863ba 100644
--- a/libXt/src/Keyboard.c
+++ b/libXt/src/Keyboard.c
@@ -1,866 +1,866 @@
-/*
-
-Copyright (c) 1993, Oracle and/or its affiliates. All rights reserved.
-
-Permission is hereby granted, free of charge, to any person obtaining a
-copy of this software and associated documentation files (the "Software"),
-to deal in the Software without restriction, including without limitation
-the rights to use, copy, modify, merge, publish, distribute, sublicense,
-and/or sell copies of the Software, and to permit persons to whom the
-Software is furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice (including the next
-paragraph) shall be included in all copies or substantial portions of the
-Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
-THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
-DEALINGS IN THE SOFTWARE.
-
-*/
-/********************************************************
-
-Copyright 1988 by Hewlett-Packard Company
-Copyright 1987, 1988, 1989 by Digital Equipment Corporation, Maynard, Massachusetts
-
-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 or Digital 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.
-
-********************************************************/
-
-/*
-
-Copyright 1987, 1988, 1994, 1998 The Open Group
-
-Permission to use, copy, modify, distribute, and sell this software and its
-documentation for any purpose is hereby granted without fee, provided that
-the above copyright notice appear in all copies and that both that
-copyright notice and this permission notice appear in supporting
-documentation.
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
-AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-Except as contained in this notice, the name of The Open Group shall not be
-used in advertising or otherwise to promote the sale, use or other dealings
-in this Software without prior written authorization from The Open Group.
-
-*/
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-#include "IntrinsicI.h"
-
-#include "PassivGraI.h"
-#include "EventI.h"
-
-#define _GetWindowedAncestor(w) (XtIsWidget(w) ? w : _XtWindowedAncestor(w))
-
-/* InActiveSubtree cache of the current focus source and its ancestors */
-static Widget *pathTrace = NULL;
-static int pathTraceDepth = 0;
-static int pathTraceMax = 0;
-
-/* FindKeyDestination cache of focus destination and ancestors up to source */
-static Widget *pseudoTrace = NULL;
-static int pseudoTraceDepth = 0;
-static int pseudoTraceMax = 0;
-
-void _XtClearAncestorCache(Widget widget)
-{
- /* the caller must lock the process lock */
- if (pathTraceDepth && pathTrace[0] == widget)
- pathTraceDepth = 0;
-}
-
-static XtServerGrabPtr CheckServerGrabs(
- XEvent *event,
- Widget *trace,
- Cardinal traceDepth)
-{
- XtServerGrabPtr grab;
- Cardinal i;
-
- for (i = traceDepth; i > 0; i--)
- {
- if ((grab = _XtCheckServerGrabsOnWidget(event, trace[i-1], KEYBOARD)))
- return (grab);
- }
- return (XtServerGrabPtr)0;
-}
-
-static Boolean IsParent(Widget a, Widget b)
-{
- for (b = XtParent(b); b; b = XtParent(b)) {
- if (b == a) return TRUE;
- if (XtIsShell(b)) return FALSE;
- }
- return FALSE;
-}
-
-#define RelRtn(lca, type) {*relTypeRtn = type; return lca;}
-
-static Widget CommonAncestor(
- register Widget a,
- register Widget b,
- XtGeneology * relTypeRtn)
-{
- if (a == b)
- {
- RelRtn(a, XtMySelf)
- }
- else if (IsParent(a, b))
- {
- RelRtn(a, XtMyAncestor)
- }
- else if (IsParent(b, a))
- {
- RelRtn(b, XtMyDescendant)
- }
- else
- for (b = XtParent(b);
- b && !XtIsShell(b);
- b = XtParent(b))
- if (IsParent(b, a))
- {
- RelRtn(b, XtMyCousin)
- }
- RelRtn(NULL, XtUnrelated)
-}
-#undef RelRtn
-
-
-
-
-
-static Widget _FindFocusWidget(
- Widget widget,
- Widget *trace,
- int traceDepth,
- Boolean activeCheck,
- Boolean *isTarget)
-{
- int src;
- Widget dst;
- XtPerWidgetInput pwi = NULL;
-
- /* For each ancestor, starting at the top, see if it's forwarded */
-
-
- /* first check the trace list till done or we go to branch */
- for (src = traceDepth-1, dst = widget; src > 0;)
- {
- if ((pwi = _XtGetPerWidgetInput(trace[src], FALSE)))
- {
- if (pwi->focusKid)
- {
- dst = pwi->focusKid;
- for (src--; src > 0 && trace[src] != dst; src--) {}
- }
- else dst = trace[--src];
- }
- else dst = trace[--src];
- }
-
- if (isTarget) {
- if (pwi && pwi->focusKid == widget)
- *isTarget = TRUE;
- else
- *isTarget = FALSE;
- }
-
- if (!activeCheck)
- while (XtIsWidget(dst)
- && (pwi = _XtGetPerWidgetInput(dst, FALSE))
- && pwi->focusKid)
- dst = pwi->focusKid;
-
- return dst;
-}
-
-
-static Widget FindFocusWidget(
- Widget widget,
- XtPerDisplayInput pdi)
-{
- if (pdi->focusWidget)
- return pdi->focusWidget;
- else
- return _FindFocusWidget(widget, pdi->trace, pdi->traceDepth, FALSE, NULL);
-}
-
-Widget XtGetKeyboardFocusWidget(Widget widget)
-{
- XtPerDisplayInput pdi;
- Widget retval;
- WIDGET_TO_APPCON(widget);
-
- LOCK_APP(app);
- pdi = _XtGetPerDisplayInput(XtDisplay(widget));
- retval = FindFocusWidget(widget, pdi);
- UNLOCK_APP(app);
- return retval;
-}
-
-static Boolean IsOutside(
- XKeyEvent *e,
- Widget w)
-{
- Position left, right, top, bottom;
-
- /*
- * if the pointer is outside the shell or inside
- * the window try to see if it would recieve the
- * focus
- */
- XtTranslateCoords(w, 0, 0, &left, &top);
- /* We need to take borders into consideration */
- left = left - w->core.border_width;
- top = top - w->core.border_width;
- right = left + w->core.width + w->core.border_width;
- bottom = top + w->core.height + w->core.border_width;
-
- if (
- (e->x_root < left) || (e->y_root < top) ||
- (e->x_root > right) || (e->y_root > bottom))
- return TRUE;
- else
- return FALSE;
-}
-
-static Widget FindKeyDestination(
- Widget widget,
- XKeyEvent *event,
- XtServerGrabPtr prevGrab,
- XtServerGrabType prevGrabType,
- XtServerGrabPtr devGrab,
- XtServerGrabType devGrabType,
- XtPerDisplayInput pdi)
-{
-
- Widget dspWidget;
- Widget focusWidget;
-
- LOCK_PROCESS;
- dspWidget =
- focusWidget =
- pdi->focusWidget =
- _GetWindowedAncestor(FindFocusWidget(widget, pdi));
-
-
- /*
- * If a grab is active from a previous activation then dispatch
- * based on owner_events ala protocol but with focus being
- * determined by XtSetKeyboardFocus.
- */
- if (IsAnyGrab(prevGrabType))
- {
- if (prevGrab->ownerEvents)
- dspWidget = focusWidget;
- else
- dspWidget = prevGrab->widget;
- }
- else
- {
- /*
- * If the focus widget is the event widget or a descendant
- * then we can avoid the rest of this. Else ugh...
- */
- if (focusWidget != widget)
- {
- XtGeneology ewRelFw; /* relationship of event widget to
- focusWidget */
- Widget lca;
-
- lca = CommonAncestor(widget, focusWidget, &ewRelFw);
-
- /*
- * if the event widget is an ancestor of focus due to the pointer
- * and/or the grab being in an ancestor and it's a passive grab
- * send to grab widget.
- * we are also dispatching to widget if ownerEvents and the event
- * is outside the client
- */
- if ((ewRelFw == XtMyAncestor) &&
- (devGrabType == XtPassiveServerGrab))
- {
- if (IsOutside(event, widget) ||
- event->type ==KeyPress
- )
- dspWidget = devGrab->widget;
- }
- else
- {
- /*
- * if the grab widget is not an ancestor of the focus
- * release the grab in order to avoid locking. There
- * is a possible case in that ownerEvents true will fall
- * through and if synch is set and the event widget
- * could turn it off we'll lock. check for it ? why not
- */
- if ((ewRelFw != XtMyAncestor)
- && (devGrabType == XtPassiveServerGrab)
- && (!IsAnyGrab(prevGrabType))
- )
- {
- XtUngrabKeyboard(devGrab->widget,
- event->time);
- devGrabType = XtNoServerGrab;
- }
- /*
- * if there isn't a grab with then check
- * for a logical grab that would have been activated
- * if the server was using Xt focus instead of server
- * focus
- */
- if (
- (event->type != KeyPress) ||
- (event->keycode == 0) /* Xlib XIM composed input */
- )
- dspWidget = focusWidget;
- else
- {
- XtServerGrabPtr grab;
-
- if (!pseudoTraceDepth ||
- !(focusWidget == pseudoTrace[0]) ||
- !(lca == pseudoTrace[pseudoTraceDepth]))
- {
- /*
- * fill ancestor list from lca
- * (non-inclusive)to focusWidget by
- * passing in lca as breakWidget
- */
- _XtFillAncestorList(&pseudoTrace,
- &pseudoTraceMax,
- &pseudoTraceDepth,
- focusWidget,
- lca);
- /* ignore lca */
- pseudoTraceDepth--;
- }
- if ((grab = CheckServerGrabs((XEvent*)event,
- pseudoTrace,
- pseudoTraceDepth)))
- {
- XtDevice device = &pdi->keyboard;
-
- device->grabType = XtPseudoPassiveServerGrab;
- pdi->activatingKey = event->keycode;
- device->grab = *grab;
-
- if (grab
- )
- dspWidget = grab->widget;
- else
- dspWidget = focusWidget;
- }
- }
- }
- }
- }
- UNLOCK_PROCESS;
- return dspWidget;
-}
-
-Widget _XtProcessKeyboardEvent(
- XKeyEvent *event,
- Widget widget,
- XtPerDisplayInput pdi)
-{
- XtDevice device = &pdi->keyboard;
- XtServerGrabPtr newGrab, devGrab = &device->grab;
- XtServerGrabRec prevGrabRec;
- XtServerGrabType prevGrabType = device->grabType;
- Widget dspWidget = NULL;
- Boolean deactivateGrab = FALSE;
-
- prevGrabRec = *devGrab;
-
- switch (event->type)
- {
- case KeyPress:
- {
- if (event->keycode != 0 && /* Xlib XIM composed input */
- !IsServerGrab(device->grabType) &&
- (newGrab = CheckServerGrabs((XEvent*)event,
- pdi->trace,
- pdi->traceDepth)))
- {
- /*
- * honor pseudo-grab from prior event by X
- * unlocking keyboard. Not Xt Unlock !
- */
- if (IsPseudoGrab(prevGrabType))
- XUngrabKeyboard(XtDisplay(newGrab->widget),
- event->time);
- else
- {
- /* Activate the grab */
- device->grab = *newGrab;
- pdi->activatingKey = event->keycode;
- device->grabType = XtPassiveServerGrab;
- }
- }
- }
- break;
-
- case KeyRelease:
- {
- if (IsEitherPassiveGrab(device->grabType) &&
- (event->keycode == pdi->activatingKey))
- deactivateGrab = TRUE;
- }
- break;
- }
- dspWidget = FindKeyDestination(widget, event,
- &prevGrabRec, prevGrabType,
- devGrab, device->grabType,
- pdi);
- if (deactivateGrab)
- {
- /* Deactivate the grab */
- device->grabType = XtNoServerGrab;
- pdi->activatingKey = 0;
- }
- return dspWidget;
-}
-
-static Widget GetShell(Widget widget)
-{
- Widget shell;
-
- for (shell = widget;
- shell && !XtIsShell(shell);
- shell = XtParent(shell)){}
- return shell;
-}
-
-
-/*
- * Check that widget really has Xt focus due to it having recieved an
- * event
- */
-typedef enum {NotActive = 0, IsActive, IsTarget} ActiveType;
-static ActiveType InActiveSubtree(Widget widget)
-{
- Boolean isTarget;
- ActiveType retval;
-
- LOCK_PROCESS;
- if (!pathTraceDepth || widget != pathTrace[0]) {
- _XtFillAncestorList(&pathTrace,
- &pathTraceMax,
- &pathTraceDepth,
- widget,
- NULL);
- }
- if (widget == _FindFocusWidget(widget,
- pathTrace,
- pathTraceDepth,
- TRUE,
- &isTarget))
- retval = (isTarget ? IsTarget : IsActive);
- else
- retval = NotActive;
- UNLOCK_PROCESS;
- return retval;
-}
-
-
-
-
-/* ARGSUSED */
-void _XtHandleFocus(
- Widget widget,
- XtPointer client_data, /* child who wants focus */
- XEvent *event,
- Boolean *cont) /* unused */
-{
- XtPerDisplayInput pdi = _XtGetPerDisplayInput(XtDisplay(widget));
- XtPerWidgetInput pwi = (XtPerWidgetInput)client_data;
- XtGeneology oldFocalPoint = pwi->focalPoint;
- XtGeneology newFocalPoint = pwi->focalPoint;
-
- switch( event->type ) {
-
- case KeyPress:
- case KeyRelease:
- /*
- * We're getting the keyevents used to guarantee propagating
- * child interest ala ForwardEvent in R3
- */
- return;
-
- case EnterNotify:
- case LeaveNotify:
-
- /*
- * If operating in a focus driven model, then enter and
- * leave events do not affect the keyboard focus.
- */
- if ((event->xcrossing.detail != NotifyInferior)
- && (event->xcrossing.focus))
- {
- switch (oldFocalPoint)
- {
- case XtMyAncestor:
- if (event->type == LeaveNotify)
- newFocalPoint = XtUnrelated;
- break;
- case XtUnrelated:
- if (event->type == EnterNotify)
- newFocalPoint = XtMyAncestor;
- break;
- case XtMySelf:
- break;
- case XtMyDescendant:
- break;
-
- }
- }
- break;
- case FocusIn:
- switch (event->xfocus.detail)
- {
- case NotifyNonlinear:
- case NotifyAncestor:
- case NotifyInferior:
- newFocalPoint = XtMySelf;
- break;
- case NotifyNonlinearVirtual:
- case NotifyVirtual:
- newFocalPoint = XtMyDescendant;
- break;
- case NotifyPointer:
- newFocalPoint = XtMyAncestor;
- break;
- }
- break;
- case FocusOut:
- switch (event->xfocus.detail)
- {
- case NotifyPointer:
- case NotifyNonlinear:
- case NotifyAncestor:
- case NotifyNonlinearVirtual:
- case NotifyVirtual:
- newFocalPoint = XtUnrelated;
- break;
- case NotifyInferior:
- newFocalPoint = XtMyDescendant;
- return;
- break;
- }
- break;
- }
-
- if (newFocalPoint != oldFocalPoint)
- {
- Boolean add;
- Widget descendant = pwi->focusKid;
-
- pwi->focalPoint = newFocalPoint;
-
- if ((oldFocalPoint == XtUnrelated) &&
- InActiveSubtree(widget) != NotActive)
- {
- pdi->focusWidget = NULL; /* invalidate the cache */
- pwi->haveFocus = TRUE;
- add = TRUE;
- }
- else if (newFocalPoint == XtUnrelated)
- {
- pdi->focusWidget = NULL; /* invalidate the cache */
- pwi->haveFocus = FALSE;
- add = FALSE;
- }
- else
- return;
-
- if (descendant)
- {
- if (add)
- {
- _XtSendFocusEvent(descendant, FocusIn);
- }
- else
- {
- _XtSendFocusEvent(descendant, FocusOut);
- }
- }
- }
-}
-
-
-static void AddFocusHandler(
- Widget widget,
- Widget descendant,
- XtPerWidgetInput pwi,
- XtPerWidgetInput psi,
- XtPerDisplayInput pdi,
- EventMask oldEventMask)
-{
- EventMask eventMask, targetEventMask;
- Widget target;
-
- /*
- * widget must now select for key events if the descendant is
- * interested in them.
- *
- * shell borders are not occluded by the child, they're occluded
- * by reparenting window managers. !!!
- */
- target = descendant ? _GetWindowedAncestor(descendant) : NULL;
- targetEventMask = XtBuildEventMask(target);
- eventMask = targetEventMask & (KeyPressMask | KeyReleaseMask);
- eventMask |= FocusChangeMask | EnterWindowMask | LeaveWindowMask;
-
- if (oldEventMask) {
- oldEventMask &= KeyPressMask | KeyReleaseMask;
- oldEventMask |= FocusChangeMask | EnterWindowMask | LeaveWindowMask;
-
- if (oldEventMask != eventMask)
- XtRemoveEventHandler(widget, (oldEventMask & ~eventMask),
- False, _XtHandleFocus, (XtPointer)pwi);
- }
-
- if (oldEventMask != eventMask)
- XtAddEventHandler(widget, eventMask, False,
- _XtHandleFocus, (XtPointer)pwi);
-
- /* What follows is too much grief to go through if the
- * target doesn't actually care about focus change events,
- * so just invalidate the focus cache & refill it when
- * the next input event actually arrives.
- */
-
- if (!(targetEventMask & FocusChangeMask)) {
- pdi->focusWidget = NULL;
- return;
- }
-
- if (XtIsRealized(widget) && !pwi->haveFocus) {
- if (psi->haveFocus) {
- Window root, child;
- int root_x, root_y, win_x, win_y;
- int left, right, top, bottom;
- unsigned int modMask;
- ActiveType act;
-
- /*
- * If the shell has the focus but the source widget
- * doesn't, it may only be because the source widget
- * wasn't previously tracking focus or crossing events.
- * If the target wants focus events, we have to
- * now determine whether the source has the focus.
- */
-
- if ((act = InActiveSubtree(widget)) == IsTarget)
- pwi->haveFocus = TRUE;
- else if (act == IsActive) {
- /*
- * An ancestor contains the focus, so if source
- * contains the pointer, then source has the focus.
- */
-
- if (XQueryPointer(XtDisplay(widget), XtWindow(widget),
- &root, &child,
- &root_x, &root_y, &win_x, &win_y, &modMask))
- {
- /* We need to take borders into consideration */
- left = top = -((int) widget->core.border_width);
- right = (int) (widget->core.width + (widget->core.border_width << 1));
- bottom = (int) (widget->core.height + (widget->core.border_width << 1));
-
- if (win_x >= left && win_x < right &&
- win_y >= top && win_y < bottom)
- pwi->haveFocus = TRUE;
- }
- }
- }
- }
- if (pwi->haveFocus) {
- pdi->focusWidget = NULL; /* invalidate the cache */
- _XtSendFocusEvent(target, FocusIn);
- }
-}
-
-
-/* ARGSUSED */
-static void QueryEventMask(
- Widget widget, /* child who gets focus */
- XtPointer client_data, /* ancestor giving it */
- XEvent *event,
- Boolean *cont) /* unused */
-{
- /* widget was once the target of an XtSetKeyboardFocus but
- * was unrealized at the time. Make sure ancestor still wants
- * focus set here then install the handler now that we know the
- * complete event mask.
- */
- Widget ancestor = (Widget)client_data;
- XtPerWidgetInput pwi = _XtGetPerWidgetInput(ancestor, FALSE);
-
- if (pwi) {
- Widget target = pwi->queryEventDescendant;
-
- /* use of 'target' is non-standard hackery;
- allows focus to non-widget */
- if ( pwi->focusKid == target ) {
- AddFocusHandler(ancestor, target, pwi,
- _XtGetPerWidgetInput(GetShell(ancestor), TRUE),
- _XtGetPerDisplayInput(XtDisplay(ancestor)),
- (EventMask)0);
- }
- XtRemoveEventHandler(widget, XtAllEvents, True,
- QueryEventMask, client_data);
- pwi->map_handler_added = FALSE;
- }
-}
-
-
-/* ARGSUSED */
-static void FocusDestroyCallback(
- Widget widget,
- XtPointer closure, /* Widget */
- XtPointer call_data)
-{
- XtSetKeyboardFocus((Widget)closure, NULL);
-}
-
-void XtSetKeyboardFocus(
- Widget widget,
- Widget descendant)
-{
- XtPerDisplayInput pdi;
- XtPerWidgetInput pwi;
- Widget oldDesc, oldTarget, target, hookobj;
- WIDGET_TO_APPCON(widget);
-
- LOCK_APP(app);
- LOCK_PROCESS;
- pdi = _XtGetPerDisplayInput(XtDisplay(widget));
- pwi = _XtGetPerWidgetInput(widget, TRUE);
- oldDesc = pwi->focusKid;
-
- if (descendant == widget) descendant = (Widget)None;
-
- target = descendant ? _GetWindowedAncestor(descendant) : NULL;
- oldTarget = oldDesc ? _GetWindowedAncestor(oldDesc) : NULL;
-
- if (descendant != oldDesc) {
-
- /* update the forward path */
- pwi->focusKid = descendant;
-
-
- /* all the rest handles focus ins and focus outs and misc gunk */
-
- if (oldDesc) {
- /* invalidate FindKeyDestination's ancestor list */
- if (pseudoTraceDepth && oldTarget == pseudoTrace[0])
- pseudoTraceDepth = 0;
-
- XtRemoveCallback(oldDesc, XtNdestroyCallback,
- FocusDestroyCallback, (XtPointer)widget);
-
- if (!oldTarget->core.being_destroyed) {
- if (pwi->map_handler_added) {
- XtRemoveEventHandler(oldTarget, XtAllEvents, True,
- QueryEventMask, (XtPointer)widget);
- pwi->map_handler_added = FALSE;
- }
- if (pwi->haveFocus) {
- _XtSendFocusEvent( oldTarget, FocusOut);
- }
- }
- else if (pwi->map_handler_added) {
- pwi->map_handler_added = FALSE;
- }
-
- if (pwi->haveFocus)
- pdi->focusWidget = NULL; /* invalidate cache */
-
- /*
- * If there was a forward path then remove the handler if
- * the path is being set to null and it isn't a shell.
- * shells always have a handler for tracking focus for the
- * hierarchy.
- *
- * Keep the pwi record on the assumption that the client
- * will continue to dynamically assign focus for this widget.
- */
- if (!XtIsShell(widget) && !descendant) {
- XtRemoveEventHandler(widget, XtAllEvents, True,
- _XtHandleFocus, (XtPointer)pwi);
- pwi->haveFocus = FALSE;
- }
- }
-
- if (descendant) {
- Widget shell = GetShell(widget);
- XtPerWidgetInput psi = _XtGetPerWidgetInput(shell, TRUE);
- XtAddCallback (descendant, XtNdestroyCallback,
- FocusDestroyCallback, (XtPointer) widget);
-
- AddFocusHandler(widget, descendant, pwi, psi, pdi,
- oldTarget ? XtBuildEventMask(oldTarget) : 0);
-
- if (widget != shell)
- XtAddEventHandler(
- shell,
- FocusChangeMask | EnterWindowMask | LeaveWindowMask,
- False,
- _XtHandleFocus,
- (XtPointer)psi
- );
-
- if (! XtIsRealized(target)) {
- XtAddEventHandler(target, (EventMask)StructureNotifyMask,
- False, QueryEventMask, (XtPointer)widget);
- pwi->map_handler_added = TRUE;
- pwi->queryEventDescendant = descendant;
- }
- }
- }
- hookobj = XtHooksOfDisplay(XtDisplay(widget));
- if (XtHasCallbacks(hookobj, XtNchangeHook) == XtCallbackHasSome) {
- XtChangeHookDataRec call_data;
-
- call_data.type = XtHsetKeyboardFocus;
- call_data.widget = widget;
- call_data.event_data = (XtPointer) descendant;
- XtCallCallbackList(hookobj,
- ((HookObject)hookobj)->hooks.changehook_callbacks,
- (XtPointer)&call_data);
- }
- UNLOCK_PROCESS;
- UNLOCK_APP(app);
-}
+/*
+
+Copyright (c) 1993, Oracle and/or its affiliates. All rights reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice (including the next
+paragraph) shall be included in all copies or substantial portions of the
+Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
+
+*/
+/********************************************************
+
+Copyright 1988 by Hewlett-Packard Company
+Copyright 1987, 1988, 1989 by Digital Equipment Corporation, Maynard, Massachusetts
+
+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 or Digital 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.
+
+********************************************************/
+
+/*
+
+Copyright 1987, 1988, 1994, 1998 The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from The Open Group.
+
+*/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include "IntrinsicI.h"
+
+#include "PassivGraI.h"
+#include "EventI.h"
+
+#define _GetWindowedAncestor(w) (XtIsWidget(w) ? w : _XtWindowedAncestor(w))
+
+/* InActiveSubtree cache of the current focus source and its ancestors */
+static Widget *pathTrace = NULL;
+static int pathTraceDepth = 0;
+static int pathTraceMax = 0;
+
+/* FindKeyDestination cache of focus destination and ancestors up to source */
+static Widget *pseudoTrace = NULL;
+static int pseudoTraceDepth = 0;
+static int pseudoTraceMax = 0;
+
+void _XtClearAncestorCache(Widget widget)
+{
+ /* the caller must lock the process lock */
+ if (pathTraceDepth && pathTrace[0] == widget)
+ pathTraceDepth = 0;
+}
+
+static XtServerGrabPtr CheckServerGrabs(
+ XEvent *event,
+ Widget *trace,
+ Cardinal traceDepth)
+{
+ XtServerGrabPtr grab;
+ Cardinal i;
+
+ for (i = traceDepth; i > 0; i--)
+ {
+ if ((grab = _XtCheckServerGrabsOnWidget(event, trace[i-1], KEYBOARD)))
+ return (grab);
+ }
+ return (XtServerGrabPtr)0;
+}
+
+static Boolean IsParent(Widget a, Widget b)
+{
+ for (b = XtParent(b); b; b = XtParent(b)) {
+ if (b == a) return TRUE;
+ if (XtIsShell(b)) return FALSE;
+ }
+ return FALSE;
+}
+
+#define RelRtn(lca, type) {*relTypeRtn = type; return lca;}
+
+static Widget CommonAncestor(
+ register Widget a,
+ register Widget b,
+ XtGeneology * relTypeRtn)
+{
+ if (a == b)
+ {
+ RelRtn(a, XtMySelf)
+ }
+ else if (IsParent(a, b))
+ {
+ RelRtn(a, XtMyAncestor)
+ }
+ else if (IsParent(b, a))
+ {
+ RelRtn(b, XtMyDescendant)
+ }
+ else
+ for (b = XtParent(b);
+ b && !XtIsShell(b);
+ b = XtParent(b))
+ if (IsParent(b, a))
+ {
+ RelRtn(b, XtMyCousin)
+ }
+ RelRtn(NULL, XtUnrelated)
+}
+#undef RelRtn
+
+
+
+
+
+static Widget _FindFocusWidget(
+ Widget widget,
+ Widget *trace,
+ int traceDepth,
+ Boolean activeCheck,
+ Boolean *isTarget)
+{
+ int src;
+ Widget dst;
+ XtPerWidgetInput pwi = NULL;
+
+ /* For each ancestor, starting at the top, see if it's forwarded */
+
+
+ /* first check the trace list till done or we go to branch */
+ for (src = traceDepth-1, dst = widget; src > 0;)
+ {
+ if ((pwi = _XtGetPerWidgetInput(trace[src], FALSE)))
+ {
+ if (pwi->focusKid)
+ {
+ dst = pwi->focusKid;
+ for (src--; src > 0 && trace[src] != dst; src--) {}
+ }
+ else dst = trace[--src];
+ }
+ else dst = trace[--src];
+ }
+
+ if (isTarget) {
+ if (pwi && pwi->focusKid == widget)
+ *isTarget = TRUE;
+ else
+ *isTarget = FALSE;
+ }
+
+ if (!activeCheck)
+ while (XtIsWidget(dst)
+ && (pwi = _XtGetPerWidgetInput(dst, FALSE))
+ && pwi->focusKid)
+ dst = pwi->focusKid;
+
+ return dst;
+}
+
+
+static Widget FindFocusWidget(
+ Widget widget,
+ XtPerDisplayInput pdi)
+{
+ if (pdi->focusWidget)
+ return pdi->focusWidget;
+ else
+ return _FindFocusWidget(widget, pdi->trace, pdi->traceDepth, FALSE, NULL);
+}
+
+Widget XtGetKeyboardFocusWidget(Widget widget)
+{
+ XtPerDisplayInput pdi;
+ Widget retval;
+ WIDGET_TO_APPCON(widget);
+
+ LOCK_APP(app);
+ pdi = _XtGetPerDisplayInput(XtDisplay(widget));
+ retval = FindFocusWidget(widget, pdi);
+ UNLOCK_APP(app);
+ return retval;
+}
+
+static Boolean IsOutside(
+ XKeyEvent *e,
+ Widget w)
+{
+ Position left, right, top, bottom;
+
+ /*
+ * if the pointer is outside the shell or inside
+ * the window try to see if it would recieve the
+ * focus
+ */
+ XtTranslateCoords(w, 0, 0, &left, &top);
+ /* We need to take borders into consideration */
+ left = left - w->core.border_width;
+ top = top - w->core.border_width;
+ right = left + w->core.width + w->core.border_width;
+ bottom = top + w->core.height + w->core.border_width;
+
+ if (
+ (e->x_root < left) || (e->y_root < top) ||
+ (e->x_root > right) || (e->y_root > bottom))
+ return TRUE;
+ else
+ return FALSE;
+}
+
+static Widget FindKeyDestination(
+ Widget widget,
+ XKeyEvent *event,
+ XtServerGrabPtr prevGrab,
+ XtServerGrabType prevGrabType,
+ XtServerGrabPtr devGrab,
+ XtServerGrabType devGrabType,
+ XtPerDisplayInput pdi)
+{
+
+ Widget dspWidget;
+ Widget focusWidget;
+
+ LOCK_PROCESS;
+ dspWidget =
+ focusWidget =
+ pdi->focusWidget =
+ _GetWindowedAncestor(FindFocusWidget(widget, pdi));
+
+
+ /*
+ * If a grab is active from a previous activation then dispatch
+ * based on owner_events ala protocol but with focus being
+ * determined by XtSetKeyboardFocus.
+ */
+ if (IsAnyGrab(prevGrabType))
+ {
+ if (prevGrab->ownerEvents)
+ dspWidget = focusWidget;
+ else
+ dspWidget = prevGrab->widget;
+ }
+ else
+ {
+ /*
+ * If the focus widget is the event widget or a descendant
+ * then we can avoid the rest of this. Else ugh...
+ */
+ if (focusWidget != widget)
+ {
+ XtGeneology ewRelFw; /* relationship of event widget to
+ focusWidget */
+ Widget lca;
+
+ lca = CommonAncestor(widget, focusWidget, &ewRelFw);
+
+ /*
+ * if the event widget is an ancestor of focus due to the pointer
+ * and/or the grab being in an ancestor and it's a passive grab
+ * send to grab widget.
+ * we are also dispatching to widget if ownerEvents and the event
+ * is outside the client
+ */
+ if ((ewRelFw == XtMyAncestor) &&
+ (devGrabType == XtPassiveServerGrab))
+ {
+ if (IsOutside(event, widget) ||
+ event->type ==KeyPress
+ )
+ dspWidget = devGrab->widget;
+ }
+ else
+ {
+ /*
+ * if the grab widget is not an ancestor of the focus
+ * release the grab in order to avoid locking. There
+ * is a possible case in that ownerEvents true will fall
+ * through and if synch is set and the event widget
+ * could turn it off we'll lock. check for it ? why not
+ */
+ if ((ewRelFw != XtMyAncestor)
+ && (devGrabType == XtPassiveServerGrab)
+ && (!IsAnyGrab(prevGrabType))
+ )
+ {
+ XtUngrabKeyboard(devGrab->widget,
+ event->time);
+ devGrabType = XtNoServerGrab;
+ }
+ /*
+ * if there isn't a grab with then check
+ * for a logical grab that would have been activated
+ * if the server was using Xt focus instead of server
+ * focus
+ */
+ if (
+ (event->type != KeyPress) ||
+ (event->keycode == 0) /* Xlib XIM composed input */
+ )
+ dspWidget = focusWidget;
+ else
+ {
+ XtServerGrabPtr grab;
+
+ if (!pseudoTraceDepth ||
+ !(focusWidget == pseudoTrace[0]) ||
+ !(lca == pseudoTrace[pseudoTraceDepth]))
+ {
+ /*
+ * fill ancestor list from lca
+ * (non-inclusive)to focusWidget by
+ * passing in lca as breakWidget
+ */
+ _XtFillAncestorList(&pseudoTrace,
+ &pseudoTraceMax,
+ &pseudoTraceDepth,
+ focusWidget,
+ lca);
+ /* ignore lca */
+ pseudoTraceDepth--;
+ }
+ if ((grab = CheckServerGrabs((XEvent*)event,
+ pseudoTrace,
+ pseudoTraceDepth)))
+ {
+ XtDevice device = &pdi->keyboard;
+
+ device->grabType = XtPseudoPassiveServerGrab;
+ pdi->activatingKey = event->keycode;
+ device->grab = *grab;
+
+ if (grab
+ )
+ dspWidget = grab->widget;
+ else
+ dspWidget = focusWidget;
+ }
+ }
+ }
+ }
+ }
+ UNLOCK_PROCESS;
+ return dspWidget;
+}
+
+Widget _XtProcessKeyboardEvent(
+ XKeyEvent *event,
+ Widget widget,
+ XtPerDisplayInput pdi)
+{
+ XtDevice device = &pdi->keyboard;
+ XtServerGrabPtr newGrab, devGrab = &device->grab;
+ XtServerGrabRec prevGrabRec;
+ XtServerGrabType prevGrabType = device->grabType;
+ Widget dspWidget = NULL;
+ Boolean deactivateGrab = FALSE;
+
+ prevGrabRec = *devGrab;
+
+ switch (event->type)
+ {
+ case KeyPress:
+ {
+ if (event->keycode != 0 && /* Xlib XIM composed input */
+ !IsServerGrab(device->grabType) &&
+ (newGrab = CheckServerGrabs((XEvent*)event,
+ pdi->trace,
+ pdi->traceDepth)))
+ {
+ /*
+ * honor pseudo-grab from prior event by X
+ * unlocking keyboard. Not Xt Unlock !
+ */
+ if (IsPseudoGrab(prevGrabType))
+ XUngrabKeyboard(XtDisplay(newGrab->widget),
+ event->time);
+ else
+ {
+ /* Activate the grab */
+ device->grab = *newGrab;
+ pdi->activatingKey = event->keycode;
+ device->grabType = XtPassiveServerGrab;
+ }
+ }
+ }
+ break;
+
+ case KeyRelease:
+ {
+ if (IsEitherPassiveGrab(device->grabType) &&
+ (event->keycode == pdi->activatingKey))
+ deactivateGrab = TRUE;
+ }
+ break;
+ }
+ dspWidget = FindKeyDestination(widget, event,
+ &prevGrabRec, prevGrabType,
+ devGrab, device->grabType,
+ pdi);
+ if (deactivateGrab)
+ {
+ /* Deactivate the grab */
+ device->grabType = XtNoServerGrab;
+ pdi->activatingKey = 0;
+ }
+ return dspWidget;
+}
+
+static Widget GetShell(Widget widget)
+{
+ Widget shell;
+
+ for (shell = widget;
+ shell && !XtIsShell(shell);
+ shell = XtParent(shell)){}
+ return shell;
+}
+
+
+/*
+ * Check that widget really has Xt focus due to it having recieved an
+ * event
+ */
+typedef enum {NotActive = 0, IsActive, IsTarget} ActiveType;
+static ActiveType InActiveSubtree(Widget widget)
+{
+ Boolean isTarget;
+ ActiveType retval;
+
+ LOCK_PROCESS;
+ if (!pathTraceDepth || widget != pathTrace[0]) {
+ _XtFillAncestorList(&pathTrace,
+ &pathTraceMax,
+ &pathTraceDepth,
+ widget,
+ NULL);
+ }
+ if (widget == _FindFocusWidget(widget,
+ pathTrace,
+ pathTraceDepth,
+ TRUE,
+ &isTarget))
+ retval = (isTarget ? IsTarget : IsActive);
+ else
+ retval = NotActive;
+ UNLOCK_PROCESS;
+ return retval;
+}
+
+
+
+
+/* ARGSUSED */
+void _XtHandleFocus(
+ Widget widget,
+ XtPointer client_data, /* child who wants focus */
+ XEvent *event,
+ Boolean *cont) /* unused */
+{
+ XtPerDisplayInput pdi = _XtGetPerDisplayInput(XtDisplay(widget));
+ XtPerWidgetInput pwi = (XtPerWidgetInput)client_data;
+ XtGeneology oldFocalPoint = pwi->focalPoint;
+ XtGeneology newFocalPoint = pwi->focalPoint;
+
+ switch( event->type ) {
+
+ case KeyPress:
+ case KeyRelease:
+ /*
+ * We're getting the keyevents used to guarantee propagating
+ * child interest ala ForwardEvent in R3
+ */
+ return;
+
+ case EnterNotify:
+ case LeaveNotify:
+
+ /*
+ * If operating in a focus driven model, then enter and
+ * leave events do not affect the keyboard focus.
+ */
+ if ((event->xcrossing.detail != NotifyInferior)
+ && (event->xcrossing.focus))
+ {
+ switch (oldFocalPoint)
+ {
+ case XtMyAncestor:
+ if (event->type == LeaveNotify)
+ newFocalPoint = XtUnrelated;
+ break;
+ case XtUnrelated:
+ if (event->type == EnterNotify)
+ newFocalPoint = XtMyAncestor;
+ break;
+ case XtMySelf:
+ break;
+ case XtMyDescendant:
+ break;
+
+ }
+ }
+ break;
+ case FocusIn:
+ switch (event->xfocus.detail)
+ {
+ case NotifyNonlinear:
+ case NotifyAncestor:
+ case NotifyInferior:
+ newFocalPoint = XtMySelf;
+ break;
+ case NotifyNonlinearVirtual:
+ case NotifyVirtual:
+ newFocalPoint = XtMyDescendant;
+ break;
+ case NotifyPointer:
+ newFocalPoint = XtMyAncestor;
+ break;
+ }
+ break;
+ case FocusOut:
+ switch (event->xfocus.detail)
+ {
+ case NotifyPointer:
+ case NotifyNonlinear:
+ case NotifyAncestor:
+ case NotifyNonlinearVirtual:
+ case NotifyVirtual:
+ newFocalPoint = XtUnrelated;
+ break;
+ case NotifyInferior:
+ newFocalPoint = XtMyDescendant;
+ return;
+ break;
+ }
+ break;
+ }
+
+ if (newFocalPoint != oldFocalPoint)
+ {
+ Boolean add;
+ Widget descendant = pwi->focusKid;
+
+ pwi->focalPoint = newFocalPoint;
+
+ if ((oldFocalPoint == XtUnrelated) &&
+ InActiveSubtree(widget) != NotActive)
+ {
+ pdi->focusWidget = NULL; /* invalidate the cache */
+ pwi->haveFocus = TRUE;
+ add = TRUE;
+ }
+ else if (newFocalPoint == XtUnrelated)
+ {
+ pdi->focusWidget = NULL; /* invalidate the cache */
+ pwi->haveFocus = FALSE;
+ add = FALSE;
+ }
+ else
+ return;
+
+ if (descendant)
+ {
+ if (add)
+ {
+ _XtSendFocusEvent(descendant, FocusIn);
+ }
+ else
+ {
+ _XtSendFocusEvent(descendant, FocusOut);
+ }
+ }
+ }
+}
+
+
+static void AddFocusHandler(
+ Widget widget,
+ Widget descendant,
+ XtPerWidgetInput pwi,
+ XtPerWidgetInput psi,
+ XtPerDisplayInput pdi,
+ EventMask oldEventMask)
+{
+ EventMask eventMask, targetEventMask;
+ Widget target;
+
+ /*
+ * widget must now select for key events if the descendant is
+ * interested in them.
+ *
+ * shell borders are not occluded by the child, they're occluded
+ * by reparenting window managers. !!!
+ */
+ target = descendant ? _GetWindowedAncestor(descendant) : NULL;
+ targetEventMask = XtBuildEventMask(target);
+ eventMask = targetEventMask & (KeyPressMask | KeyReleaseMask);
+ eventMask |= FocusChangeMask | EnterWindowMask | LeaveWindowMask;
+
+ if (oldEventMask) {
+ oldEventMask &= KeyPressMask | KeyReleaseMask;
+ oldEventMask |= FocusChangeMask | EnterWindowMask | LeaveWindowMask;
+
+ if (oldEventMask != eventMask)
+ XtRemoveEventHandler(widget, (oldEventMask & ~eventMask),
+ False, _XtHandleFocus, (XtPointer)pwi);
+ }
+
+ if (oldEventMask != eventMask)
+ XtAddEventHandler(widget, eventMask, False,
+ _XtHandleFocus, (XtPointer)pwi);
+
+ /* What follows is too much grief to go through if the
+ * target doesn't actually care about focus change events,
+ * so just invalidate the focus cache & refill it when
+ * the next input event actually arrives.
+ */
+
+ if (!(targetEventMask & FocusChangeMask)) {
+ pdi->focusWidget = NULL;
+ return;
+ }
+
+ if (XtIsRealized(widget) && !pwi->haveFocus) {
+ if (psi->haveFocus) {
+ Window root, child;
+ int root_x, root_y, win_x, win_y;
+ int left, right, top, bottom;
+ unsigned int modMask;
+ ActiveType act;
+
+ /*
+ * If the shell has the focus but the source widget
+ * doesn't, it may only be because the source widget
+ * wasn't previously tracking focus or crossing events.
+ * If the target wants focus events, we have to
+ * now determine whether the source has the focus.
+ */
+
+ if ((act = InActiveSubtree(widget)) == IsTarget)
+ pwi->haveFocus = TRUE;
+ else if (act == IsActive) {
+ /*
+ * An ancestor contains the focus, so if source
+ * contains the pointer, then source has the focus.
+ */
+
+ if (XQueryPointer(XtDisplay(widget), XtWindow(widget),
+ &root, &child,
+ &root_x, &root_y, &win_x, &win_y, &modMask))
+ {
+ /* We need to take borders into consideration */
+ left = top = -((int) widget->core.border_width);
+ right = (int) (widget->core.width + (widget->core.border_width << 1));
+ bottom = (int) (widget->core.height + (widget->core.border_width << 1));
+
+ if (win_x >= left && win_x < right &&
+ win_y >= top && win_y < bottom)
+ pwi->haveFocus = TRUE;
+ }
+ }
+ }
+ }
+ if (pwi->haveFocus) {
+ pdi->focusWidget = NULL; /* invalidate the cache */
+ _XtSendFocusEvent(target, FocusIn);
+ }
+}
+
+
+/* ARGSUSED */
+static void QueryEventMask(
+ Widget widget, /* child who gets focus */
+ XtPointer client_data, /* ancestor giving it */
+ XEvent *event,
+ Boolean *cont) /* unused */
+{
+ /* widget was once the target of an XtSetKeyboardFocus but
+ * was unrealized at the time. Make sure ancestor still wants
+ * focus set here then install the handler now that we know the
+ * complete event mask.
+ */
+ Widget ancestor = (Widget)client_data;
+ XtPerWidgetInput pwi = _XtGetPerWidgetInput(ancestor, FALSE);
+
+ if (pwi) {
+ Widget target = pwi->queryEventDescendant;
+
+ /* use of 'target' is non-standard hackery;
+ allows focus to non-widget */
+ if ( pwi->focusKid == target ) {
+ AddFocusHandler(ancestor, target, pwi,
+ _XtGetPerWidgetInput(GetShell(ancestor), TRUE),
+ _XtGetPerDisplayInput(XtDisplay(ancestor)),
+ (EventMask)0);
+ }
+ XtRemoveEventHandler(widget, XtAllEvents, True,
+ QueryEventMask, client_data);
+ pwi->map_handler_added = FALSE;
+ }
+}
+
+
+/* ARGSUSED */
+static void FocusDestroyCallback(
+ Widget widget,
+ XtPointer closure, /* Widget */
+ XtPointer call_data)
+{
+ XtSetKeyboardFocus((Widget)closure, NULL);
+}
+
+void XtSetKeyboardFocus(
+ Widget widget,
+ Widget descendant)
+{
+ XtPerDisplayInput pdi;
+ XtPerWidgetInput pwi;
+ Widget oldDesc, oldTarget, target, hookobj;
+ WIDGET_TO_APPCON(widget);
+
+ LOCK_APP(app);
+ LOCK_PROCESS;
+ pdi = _XtGetPerDisplayInput(XtDisplay(widget));
+ pwi = _XtGetPerWidgetInput(widget, TRUE);
+ oldDesc = pwi->focusKid;
+
+ if (descendant == widget) descendant = (Widget)None;
+
+ target = descendant ? _GetWindowedAncestor(descendant) : NULL;
+ oldTarget = oldDesc ? _GetWindowedAncestor(oldDesc) : NULL;
+
+ if (descendant != oldDesc) {
+
+ /* update the forward path */
+ pwi->focusKid = descendant;
+
+
+ /* all the rest handles focus ins and focus outs and misc gunk */
+
+ if (oldDesc) {
+ /* invalidate FindKeyDestination's ancestor list */
+ if (pseudoTraceDepth && oldTarget == pseudoTrace[0])
+ pseudoTraceDepth = 0;
+
+ XtRemoveCallback(oldDesc, XtNdestroyCallback,
+ FocusDestroyCallback, (XtPointer)widget);
+
+ if (!oldTarget->core.being_destroyed) {
+ if (pwi->map_handler_added) {
+ XtRemoveEventHandler(oldTarget, XtAllEvents, True,
+ QueryEventMask, (XtPointer)widget);
+ pwi->map_handler_added = FALSE;
+ }
+ if (pwi->haveFocus) {
+ _XtSendFocusEvent( oldTarget, FocusOut);
+ }
+ }
+ else if (pwi->map_handler_added) {
+ pwi->map_handler_added = FALSE;
+ }
+
+ if (pwi->haveFocus)
+ pdi->focusWidget = NULL; /* invalidate cache */
+
+ /*
+ * If there was a forward path then remove the handler if
+ * the path is being set to null and it isn't a shell.
+ * shells always have a handler for tracking focus for the
+ * hierarchy.
+ *
+ * Keep the pwi record on the assumption that the client
+ * will continue to dynamically assign focus for this widget.
+ */
+ if (!XtIsShell(widget) && !descendant) {
+ XtRemoveEventHandler(widget, XtAllEvents, True,
+ _XtHandleFocus, (XtPointer)pwi);
+ pwi->haveFocus = FALSE;
+ }
+ }
+
+ if (descendant) {
+ Widget shell = GetShell(widget);
+ XtPerWidgetInput psi = _XtGetPerWidgetInput(shell, TRUE);
+ XtAddCallback (descendant, XtNdestroyCallback,
+ FocusDestroyCallback, (XtPointer) widget);
+
+ AddFocusHandler(widget, descendant, pwi, psi, pdi,
+ oldTarget ? XtBuildEventMask(oldTarget) : 0);
+
+ if (widget != shell)
+ XtAddEventHandler(
+ shell,
+ FocusChangeMask | EnterWindowMask | LeaveWindowMask,
+ False,
+ _XtHandleFocus,
+ (XtPointer)psi
+ );
+
+ if (! XtIsRealized(target)) {
+ XtAddEventHandler(target, (EventMask)StructureNotifyMask,
+ False, QueryEventMask, (XtPointer)widget);
+ pwi->map_handler_added = TRUE;
+ pwi->queryEventDescendant = descendant;
+ }
+ }
+ }
+ hookobj = XtHooksOfDisplay(XtDisplay(widget));
+ if (XtHasCallbacks(hookobj, XtNchangeHook) == XtCallbackHasSome) {
+ XtChangeHookDataRec call_data;
+
+ call_data.type = XtHsetKeyboardFocus;
+ call_data.widget = widget;
+ call_data.event_data = (XtPointer) descendant;
+ XtCallCallbackList(hookobj,
+ ((HookObject)hookobj)->hooks.changehook_callbacks,
+ (XtPointer)&call_data);
+ }
+ UNLOCK_PROCESS;
+ UNLOCK_APP(app);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-08 18:33:35 +0000