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+/* $Xorg: Event.c,v 1.5 2001/02/09 02:03:54 xorgcvs Exp $ */
+
+/***********************************************************
+Copyright 1987, 1988 by Digital Equipment Corporation, Maynard, Massachusetts,
+Copyright 1993 by Sun Microsystems, Inc. Mountain View, CA.
+
+ All Rights Reserved
+
+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 Digital 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.
+
+******************************************************************/
+
+/*
+
+Copyright 1987, 1988, 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.
+
+*/
+/* $XFree86: xc/lib/Xt/Event.c,v 3.10 2001/12/14 19:56:11 dawes Exp $ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include "IntrinsicI.h"
+#include "Shell.h"
+#include "StringDefs.h"
+
+typedef struct _XtEventRecExt {
+ int type;
+ XtPointer select_data[1]; /* actual dimension is [mask] */
+} XtEventRecExt;
+
+#define EXT_TYPE(p) (((XtEventRecExt*) ((p)+1))->type)
+#define EXT_SELECT_DATA(p,n) (((XtEventRecExt*) ((p)+1))->select_data[n])
+
+#define NonMaskableMask ((EventMask)0x80000000L)
+
+/*
+ * These are definitions to make the code that handles exposure compresssion
+ * easier to read.
+ *
+ * COMP_EXPOSE - The compression exposure field of "widget"
+ * COMP_EXPOSE_TYPE - The type of compression (lower 4 bits of COMP_EXPOSE.
+ * GRAPHICS_EXPOSE - TRUE if the widget wants graphics expose events
+ * dispatched.
+ * NO_EXPOSE - TRUE if the widget wants No expose events dispatched.
+ */
+
+#define COMP_EXPOSE (widget->core.widget_class->core_class.compress_exposure)
+#define COMP_EXPOSE_TYPE (COMP_EXPOSE & 0x0f)
+#define GRAPHICS_EXPOSE ((XtExposeGraphicsExpose & COMP_EXPOSE) || \
+ (XtExposeGraphicsExposeMerged & COMP_EXPOSE))
+#define NO_EXPOSE (XtExposeNoExpose & COMP_EXPOSE)
+
+EventMask XtBuildEventMask(
+ Widget widget)
+{
+ XtEventTable ev;
+ EventMask mask = 0L;
+ WIDGET_TO_APPCON(widget);
+
+ LOCK_APP(app);
+ for (ev = widget->core.event_table; ev != NULL; ev = ev->next)
+ if (ev->select) {
+ if (!ev->has_type_specifier)
+ mask |= ev->mask;
+ else {
+ if (EXT_TYPE(ev) < LASTEvent) {
+ Cardinal i;
+ for (i = 0; i < ev->mask; i++)
+ if (EXT_SELECT_DATA(ev, i))
+ mask |= *(EventMask*)EXT_SELECT_DATA(ev, i);
+ }
+ }
+ }
+ LOCK_PROCESS;
+ if (widget->core.widget_class->core_class.expose != NULL)
+ mask |= ExposureMask;
+ if (widget->core.widget_class->core_class.visible_interest)
+ mask |= VisibilityChangeMask;
+ UNLOCK_PROCESS;
+ if (widget->core.tm.translations)
+ mask |= widget->core.tm.translations->eventMask;
+
+ mask = mask & ~NonMaskableMask;
+ UNLOCK_APP(app);
+ return mask;
+}
+
+static void CallExtensionSelector(
+ Widget widget,
+ ExtSelectRec* rec,
+ Boolean forceCall)
+{
+ XtEventRec* p;
+ XtPointer* data;
+ int* types;
+ Cardinal i, count = 0;
+
+ for (p = widget->core.event_table; p != NULL; p = p->next)
+ if (p->has_type_specifier &&
+ EXT_TYPE(p) >= rec->min && EXT_TYPE(p) <= rec->max)
+ count += p->mask;
+
+ if (count == 0 && !forceCall) return;
+
+ data = (XtPointer *) ALLOCATE_LOCAL(count * sizeof (XtPointer));
+ types = (int *) ALLOCATE_LOCAL(count * sizeof (int));
+ count = 0;
+
+ for (p = widget->core.event_table; p != NULL; p = p->next)
+ if (p->has_type_specifier &&
+ EXT_TYPE(p) >= rec->min && EXT_TYPE(p) <= rec->max)
+ for (i =0; i < p->mask; i++) {
+ types[count] = EXT_TYPE(p);
+ data[count++] = EXT_SELECT_DATA(p, i);
+ }
+
+ (*rec->proc)(widget, types, data, count, rec->client_data);
+ DEALLOCATE_LOCAL((char*) types);
+ DEALLOCATE_LOCAL((char*) data);
+}
+
+static void
+RemoveEventHandler(
+ Widget widget,
+ XtPointer select_data,
+ int type,
+ Boolean has_type_specifier,
+ Boolean other,
+ XtEventHandler proc,
+ XtPointer closure,
+ Boolean raw)
+{
+ XtEventRec *p, **pp;
+ EventMask eventMask, oldMask = XtBuildEventMask(widget);
+
+ if (raw) raw = 1;
+ pp = &widget->core.event_table;
+ while ((p = *pp) &&
+ (p->proc != proc || p->closure != closure || p->select == raw ||
+ has_type_specifier != p->has_type_specifier ||
+ (has_type_specifier && EXT_TYPE(p) != type)))
+ pp = &p->next;
+ if (!p) return;
+
+ /* un-register it */
+ if (!has_type_specifier) {
+ eventMask = *(EventMask*)select_data;
+ eventMask &= ~NonMaskableMask;
+ if (other)
+ eventMask |= NonMaskableMask;
+ p->mask &= ~eventMask;
+ } else {
+ Cardinal i;
+ /* p->mask specifies count of EXT_SELECT_DATA(p,i)
+ * search through the list of selection data, if not found
+ * dont remove this handler
+ */
+ for (i = 0; i < p->mask && select_data != EXT_SELECT_DATA(p,i);) i++;
+ if (i == p->mask) return;
+ if (p->mask == 1) p->mask = 0;
+ else {
+ p->mask--;
+ while (i < p->mask) {
+ EXT_SELECT_DATA(p,i) = EXT_SELECT_DATA(p, i+1);
+ i++;
+ }
+ }
+ }
+
+ if (!p->mask) { /* delete it entirely */
+ *pp = p->next;
+ XtFree((char *)p);
+ }
+
+ /* Reset select mask if realized and not raw. */
+ if ( !raw && XtIsRealized(widget) && !widget->core.being_destroyed) {
+ EventMask mask = XtBuildEventMask(widget);
+ Display* dpy = XtDisplay (widget);
+
+ if (oldMask != mask)
+ XSelectInput(dpy, XtWindow(widget), mask);
+
+ if (has_type_specifier) {
+ XtPerDisplay pd = _XtGetPerDisplay(dpy);
+ int i;
+ for (i = 0; i < pd->ext_select_count; i++) {
+ if (type >= pd->ext_select_list[i].min &&
+ type <= pd->ext_select_list[i].max) {
+ CallExtensionSelector(widget, pd->ext_select_list+i, TRUE);
+ break;
+ }
+ if (type < pd->ext_select_list[i].min) break;
+ }
+ }
+ }
+}
+
+/* Function Name: AddEventHandler
+ * Description: An Internal routine that does the actual work of
+ * adding the event handlers.
+ * Arguments: widget - widget to register an event handler for.
+ * eventMask - events to mask for.
+ * other - pass non maskable events to this proceedure.
+ * proc - proceedure to register.
+ * closure - data to pass to the event hander.
+ * position - where to add this event handler.
+ * force_new_position - If the element is already in the
+ * list, this will force it to the
+ * beginning or end depending on position.
+ * raw - If FALSE call XSelectInput for events in mask.
+ * Returns: none
+ */
+
+static void
+AddEventHandler(
+ Widget widget,
+ XtPointer select_data,
+ int type,
+ Boolean has_type_specifier,
+ Boolean other,
+ XtEventHandler proc,
+ XtPointer closure,
+ XtListPosition position,
+ Boolean force_new_position,
+ Boolean raw)
+{
+ register XtEventRec *p, **pp;
+ EventMask oldMask = 0, eventMask = 0;
+
+ if (!has_type_specifier) {
+ eventMask = *(EventMask*)select_data & ~NonMaskableMask;
+ if (other) eventMask |= NonMaskableMask;
+ if (!eventMask) return;
+ } else if (!type) return;
+
+ if (XtIsRealized(widget) && !raw) oldMask = XtBuildEventMask(widget);
+
+ if (raw) raw = 1;
+ pp = &widget->core.event_table;
+ while ((p = *pp) &&
+ (p->proc != proc || p->closure != closure || p->select == raw ||
+ has_type_specifier != p->has_type_specifier ||
+ (has_type_specifier && EXT_TYPE(p) != type)))
+ pp = &p->next;
+
+ if (!p) { /* New proc to add to list */
+ if (has_type_specifier) {
+ p = (XtEventRec*) __XtMalloc(sizeof(XtEventRec) +
+ sizeof(XtEventRecExt));
+ EXT_TYPE(p) = type;
+ EXT_SELECT_DATA(p,0) = select_data;
+ p->mask = 1;
+ p->has_type_specifier = True;
+ } else {
+ p = (XtEventRec*) __XtMalloc(sizeof(XtEventRec));
+ p->mask = eventMask;
+ p->has_type_specifier = False;
+ }
+ p->proc = proc;
+ p->closure = closure;
+ p->select = ! raw;
+
+ if (position == XtListHead) {
+ p->next = widget->core.event_table;
+ widget->core.event_table = p;
+ pp = &widget->core.event_table;
+ } else {
+ *pp = p;
+ p->next = NULL;
+ }
+ }
+ else {
+ if (force_new_position) {
+ *pp = p->next;
+
+ if (position == XtListHead) {
+ p->next = widget->core.event_table;
+ widget->core.event_table = p;
+ } else {
+ /*
+ * Find the last element in the list.
+ */
+ while (*pp)
+ pp = &(*pp)->next;
+ *pp = p;
+ p->next = NULL;
+ }
+ }
+
+ if (!has_type_specifier)
+ p->mask |= eventMask;
+ else {
+ Cardinal i;
+ /* p->mask specifies count of EXT_SELECT_DATA(p,i) */
+ for (i = 0; i < p->mask && select_data != EXT_SELECT_DATA(p,i); )
+ i++;
+ if (i == p->mask) {
+ p = (XtEventRec*) XtRealloc((char*)p,
+ sizeof(XtEventRec) +
+ sizeof(XtEventRecExt) +
+ p->mask * sizeof(XtPointer));
+ EXT_SELECT_DATA(p,i) = select_data;
+ p->mask++;
+ *pp = p;
+ }
+ }
+ }
+
+ if (XtIsRealized(widget) && !raw) {
+ EventMask mask = XtBuildEventMask(widget);
+ Display* dpy = XtDisplay (widget);
+
+ if (oldMask != mask)
+ XSelectInput(dpy, XtWindow(widget), mask);
+
+ if (has_type_specifier) {
+ XtPerDisplay pd = _XtGetPerDisplay (dpy);
+ int i;
+ for (i = 0; i < pd->ext_select_count; i++) {
+ if (type >= pd->ext_select_list[i].min &&
+ type <= pd->ext_select_list[i].max) {
+ CallExtensionSelector(widget, pd->ext_select_list+i, FALSE);
+ break;
+ }
+ if (type < pd->ext_select_list[i].min) break;
+ }
+ }
+ }
+}
+
+void XtRemoveEventHandler(
+ Widget widget,
+ EventMask eventMask,
+ _XtBoolean other,
+ XtEventHandler proc,
+ XtPointer closure)
+{
+ WIDGET_TO_APPCON(widget);
+ LOCK_APP(app);
+ RemoveEventHandler(widget, (XtPointer) &eventMask, 0, FALSE,
+ other, proc, closure, FALSE);
+ UNLOCK_APP(app);
+}
+
+void XtAddEventHandler(
+ Widget widget,
+ EventMask eventMask,
+ _XtBoolean other,
+ XtEventHandler proc,
+ XtPointer closure)
+{
+ WIDGET_TO_APPCON(widget);
+ LOCK_APP(app);
+ AddEventHandler(widget, (XtPointer) &eventMask, 0, FALSE, other,
+ proc, closure, XtListTail, FALSE, FALSE);
+ UNLOCK_APP(app);
+}
+
+void XtInsertEventHandler(
+ Widget widget,
+ EventMask eventMask,
+ _XtBoolean other,
+ XtEventHandler proc,
+ XtPointer closure,
+ XtListPosition position)
+{
+ WIDGET_TO_APPCON(widget);
+ LOCK_APP(app);
+ AddEventHandler(widget, (XtPointer) &eventMask, 0, FALSE, other,
+ proc, closure, position, TRUE, FALSE);
+ UNLOCK_APP(app);
+}
+
+void XtRemoveRawEventHandler(
+ Widget widget,
+ EventMask eventMask,
+ _XtBoolean other,
+ XtEventHandler proc,
+ XtPointer closure)
+{
+ WIDGET_TO_APPCON(widget);
+ LOCK_APP(app);
+ RemoveEventHandler(widget, (XtPointer) &eventMask, 0, FALSE,
+ other, proc, closure, TRUE);
+ UNLOCK_APP(app);
+}
+
+void XtInsertRawEventHandler(
+ Widget widget,
+ EventMask eventMask,
+ _XtBoolean other,
+ XtEventHandler proc,
+ XtPointer closure,
+ XtListPosition position)
+{
+ WIDGET_TO_APPCON(widget);
+ LOCK_APP(app);
+ AddEventHandler(widget, (XtPointer) &eventMask, 0, FALSE, other,
+ proc, closure, position, TRUE, TRUE);
+ UNLOCK_APP(app);
+}
+
+void XtAddRawEventHandler(
+ Widget widget,
+ EventMask eventMask,
+ _XtBoolean other,
+ XtEventHandler proc,
+ XtPointer closure)
+{
+ WIDGET_TO_APPCON(widget);
+ LOCK_APP(app);
+ AddEventHandler(widget, (XtPointer) &eventMask, 0, FALSE, other,
+ proc, closure, XtListTail, FALSE, TRUE);
+ UNLOCK_APP(app);
+}
+
+void XtRemoveEventTypeHandler(
+ Widget widget,
+ int type,
+ XtPointer select_data,
+ XtEventHandler proc,
+ XtPointer closure)
+{
+ WIDGET_TO_APPCON(widget);
+ LOCK_APP(app);
+ RemoveEventHandler(widget, select_data, type, TRUE,
+ FALSE, proc, closure, FALSE);
+ UNLOCK_APP(app);
+}
+
+void XtInsertEventTypeHandler(
+ Widget widget,
+ int type,
+ XtPointer select_data,
+ XtEventHandler proc,
+ XtPointer closure,
+ XtListPosition position)
+{
+ WIDGET_TO_APPCON(widget);
+ LOCK_APP(app);
+ AddEventHandler(widget, select_data, type, TRUE, FALSE,
+ proc, closure, position, TRUE, FALSE);
+ UNLOCK_APP(app);
+}
+
+typedef struct _WWPair {
+ struct _WWPair *next;
+ Window window;
+ Widget widget;
+} *WWPair;
+
+typedef struct _WWTable {
+ unsigned int mask; /* size of hash table - 1 */
+ unsigned int rehash; /* mask - 2 */
+ unsigned int occupied; /* number of occupied entries */
+ unsigned int fakes; /* number occupied by WWfake */
+ Widget *entries; /* the entries */
+ WWPair pairs; /* bogus entries */
+} *WWTable;
+
+static const WidgetRec WWfake; /* placeholder for deletions */
+
+#define WWHASH(tab,win) ((win) & tab->mask)
+#define WWREHASHVAL(tab,win) ((((win) % tab->rehash) + 2) | 1)
+#define WWREHASH(tab,idx,rehash) ((idx + rehash) & tab->mask)
+#define WWTABLE(display) (_XtGetPerDisplay(display)->WWtable)
+
+static void ExpandWWTable(WWTable);
+
+void XtRegisterDrawable(
+ Display* display,
+ Drawable drawable,
+ Widget widget)
+{
+ WWTable tab;
+ int idx, rehash;
+ Widget entry;
+ Window window = (Window) drawable;
+ WIDGET_TO_APPCON(widget);
+
+ LOCK_APP(app);
+ LOCK_PROCESS;
+ tab = WWTABLE(display);
+ if (window != XtWindow(widget)) {
+ WWPair pair;
+ pair = XtNew(struct _WWPair);
+ pair->next = tab->pairs;
+ pair->window = window;
+ pair->widget = widget;
+ tab->pairs = pair;
+ UNLOCK_PROCESS;
+ UNLOCK_APP(app);
+ return;
+ }
+ if ((tab->occupied + (tab->occupied >> 2)) > tab->mask)
+ ExpandWWTable(tab);
+
+ idx = WWHASH(tab, window);
+ if ((entry = tab->entries[idx]) && entry != &WWfake) {
+ rehash = WWREHASHVAL(tab, window);
+ do {
+ idx = WWREHASH(tab, idx, rehash);
+ } while ((entry = tab->entries[idx]) && entry != &WWfake);
+ }
+ if (!entry)
+ tab->occupied++;
+ else if (entry == &WWfake)
+ tab->fakes--;
+ tab->entries[idx] = widget;
+ UNLOCK_PROCESS;
+ UNLOCK_APP(app);
+}
+
+void XtUnregisterDrawable(
+ Display* display,
+ Drawable drawable)
+{
+ WWTable tab;
+ int idx, rehash;
+ Widget entry;
+ Window window = (Window) drawable;
+ Widget widget = XtWindowToWidget (display, window);
+ DPY_TO_APPCON(display);
+
+ if (widget == NULL) return;
+
+ LOCK_APP(app);
+ LOCK_PROCESS;
+ tab = WWTABLE(display);
+ if (window != XtWindow(widget)) {
+ WWPair *prev, pair;
+
+ prev = &tab->pairs;
+ while ((pair = *prev) && pair->window != window)
+ prev = &pair->next;
+ if (pair) {
+ *prev = pair->next;
+ XtFree((char *)pair);
+ }
+ UNLOCK_PROCESS;
+ UNLOCK_APP(app);
+ return;
+ }
+ idx = WWHASH(tab, window);
+ if ((entry = tab->entries[idx])) {
+ if (entry != widget) {
+ rehash = WWREHASHVAL(tab, window);
+ do {
+ idx = WWREHASH(tab, idx, rehash);
+ if (!(entry = tab->entries[idx])) {
+ UNLOCK_PROCESS;
+ UNLOCK_APP(app);
+ return;
+ }
+ } while (entry != widget);
+ }
+ tab->entries[idx] = (Widget)&WWfake;
+ tab->fakes++;
+ }
+ UNLOCK_PROCESS;
+ UNLOCK_APP(app);
+}
+
+static void ExpandWWTable(
+ register WWTable tab)
+{
+ unsigned int oldmask;
+ register Widget *oldentries, *entries;
+ register Cardinal oldidx, newidx, rehash;
+ register Widget entry;
+
+ LOCK_PROCESS;
+ oldmask = tab->mask;
+ oldentries = tab->entries;
+ tab->occupied -= tab->fakes;
+ tab->fakes = 0;
+ if ((tab->occupied + (tab->occupied >> 2)) > tab->mask) {
+ tab->mask = (tab->mask << 1) + 1;
+ tab->rehash = tab->mask - 2;
+ }
+ entries = tab->entries = (Widget *) __XtCalloc(tab->mask+1, sizeof(Widget));
+ for (oldidx = 0; oldidx <= oldmask; oldidx++) {
+ if ((entry = oldentries[oldidx]) && entry != &WWfake) {
+ newidx = WWHASH(tab, XtWindow(entry));
+ if (entries[newidx]) {
+ rehash = WWREHASHVAL(tab, XtWindow(entry));
+ do {
+ newidx = WWREHASH(tab, newidx, rehash);
+ } while (entries[newidx]);
+ }
+ entries[newidx] = entry;
+ }
+ }
+ XtFree((char *)oldentries);
+ UNLOCK_PROCESS;
+}
+
+Widget XtWindowToWidget(
+ register Display *display,
+ register Window window)
+{
+ register WWTable tab;
+ register int idx, rehash;
+ register Widget entry;
+ WWPair pair;
+ DPY_TO_APPCON(display);
+
+ if (!window) return NULL;
+
+ LOCK_APP(app);
+ LOCK_PROCESS;
+ tab = WWTABLE(display);
+ idx = WWHASH(tab, window);
+ if ((entry = tab->entries[idx]) && XtWindow(entry) != window) {
+ rehash = WWREHASHVAL(tab, window);
+ do {
+ idx = WWREHASH(tab, idx, rehash);
+ } while ((entry = tab->entries[idx]) && XtWindow(entry) != window);
+ }
+ if (entry) {
+ UNLOCK_PROCESS;
+ UNLOCK_APP(app);
+ return entry;
+ }
+ for (pair = tab->pairs; pair; pair = pair->next) {
+ if (pair->window == window) {
+ entry = pair->widget;
+ UNLOCK_PROCESS;
+ UNLOCK_APP(app);
+ return entry;
+ }
+ }
+ UNLOCK_PROCESS;
+ UNLOCK_APP(app);
+ return NULL;
+}
+
+void _XtAllocWWTable(
+ XtPerDisplay pd)
+{
+ register WWTable tab;
+
+ tab = (WWTable) __XtMalloc(sizeof(struct _WWTable));
+ tab->mask = 0x7f;
+ tab->rehash = tab->mask - 2;
+ tab->entries = (Widget *) __XtCalloc(tab->mask+1, sizeof(Widget));
+ tab->occupied = 0;
+ tab->fakes = 0;
+ tab->pairs = NULL;
+ pd->WWtable = tab;
+}
+
+void _XtFreeWWTable(
+ register XtPerDisplay pd)
+{
+ register WWPair pair, next;
+
+ for (pair = pd->WWtable->pairs; pair; pair = next) {
+ next = pair->next;
+ XtFree((char *)pair);
+ }
+ XtFree((char *)pd->WWtable->entries);
+ XtFree((char *)pd->WWtable);
+}
+
+#define EHMAXSIZE 25 /* do not make whopping big */
+
+static Boolean CallEventHandlers(
+ Widget widget,
+ XEvent *event,
+ EventMask mask)
+{
+ register XtEventRec *p;
+ XtEventHandler *proc;
+ XtPointer *closure;
+ XtEventHandler procs[EHMAXSIZE];
+ XtPointer closures[EHMAXSIZE];
+ Boolean cont_to_disp = True;
+ int i, numprocs;
+
+ /* Have to copy the procs into an array, because one of them might
+ * call XtRemoveEventHandler, which would break our linked list. */
+
+ numprocs = 0;
+ for (p=widget->core.event_table; p; p = p->next) {
+ if ((!p->has_type_specifier && (mask & p->mask)) ||
+ (p->has_type_specifier && event->type == EXT_TYPE(p)))
+ numprocs++;
+ }
+ if (numprocs > EHMAXSIZE) {
+ proc = (XtEventHandler *)__XtMalloc(numprocs * (sizeof(XtEventHandler) +
+ sizeof(XtPointer)));
+ closure = (XtPointer *)(proc + numprocs);
+ } else {
+ proc = procs;
+ closure = closures;
+ }
+ numprocs = 0;
+ for (p=widget->core.event_table; p; p = p->next) {
+ if ((!p->has_type_specifier && (mask & p->mask)) ||
+ (p->has_type_specifier && event->type == EXT_TYPE(p))) {
+ proc[numprocs] = p->proc;
+ closure[numprocs] = p->closure;
+ numprocs++;
+ }
+ }
+/* FUNCTIONS CALLED THROUGH POINTER proc:
+ Selection.c:ReqCleanup,
+ "Shell.c":EventHandler,
+ PassivGrab.c:ActiveHandler,
+ PassivGrab.c:RealizeHandler,
+ Keyboard.c:QueryEventMask,
+ _XtHandleFocus,
+ Selection.c:HandleSelectionReplies,
+ Selection.c:HandleGetIncrement,
+ Selection.c:HandleIncremental,
+ Selection.c:HandlePropertyGone,
+ Selection.c:HandleSelectionEvents
+ */
+ for (i = 0; i < numprocs && cont_to_disp; i++)
+ (*(proc[i]))(widget, closure[i], event, &cont_to_disp);
+ if (numprocs > EHMAXSIZE)
+ XtFree((char *)proc);
+ return cont_to_disp;
+}
+
+static void CompressExposures(XEvent *, Widget);
+
+#define KnownButtons (Button1MotionMask|Button2MotionMask|Button3MotionMask|\
+ Button4MotionMask|Button5MotionMask)
+
+/* keep this SMALL to avoid blowing stack cache! */
+/* because some compilers allocate all local locals on procedure entry */
+#define EHSIZE 4
+
+Boolean XtDispatchEventToWidget(
+ Widget widget,
+ XEvent* event)
+{
+ register XtEventRec *p;
+ Boolean was_dispatched = False;
+ Boolean call_tm = False;
+ Boolean cont_to_disp;
+ EventMask mask;
+ WIDGET_TO_APPCON(widget);
+
+ LOCK_APP(app);
+
+ mask = _XtConvertTypeToMask(event->type);
+ if (event->type == MotionNotify)
+ mask |= (event->xmotion.state & KnownButtons);
+
+ LOCK_PROCESS;
+ if ( (mask == ExposureMask) ||
+ ((event->type == NoExpose) && NO_EXPOSE) ||
+ ((event->type == GraphicsExpose) && GRAPHICS_EXPOSE) ) {
+
+ if (widget->core.widget_class->core_class.expose != NULL ) {
+
+ /* We need to mask off the bits that could contain the information
+ * about whether or not we desire Graphics and NoExpose events. */
+
+ if ( (COMP_EXPOSE_TYPE == XtExposeNoCompress) ||
+ (event->type == NoExpose) )
+
+ (*widget->core.widget_class->core_class.expose)
+ (widget, event, (Region)NULL);
+ else {
+ CompressExposures(event, widget);
+ }
+ was_dispatched = True;
+ }
+ }
+
+ if ((mask == VisibilityChangeMask) &&
+ XtClass(widget)->core_class.visible_interest) {
+ was_dispatched = True;
+ /* our visibility just changed... */
+ switch (((XVisibilityEvent *)event)->state) {
+ case VisibilityUnobscured:
+ widget->core.visible = TRUE;
+ break;
+
+ case VisibilityPartiallyObscured:
+ /* what do we want to say here? */
+ /* well... some of us is visible */
+ widget->core.visible = TRUE;
+ break;
+
+ case VisibilityFullyObscured:
+ widget->core.visible = FALSE;
+ /* do we want to mark our children obscured? */
+ break;
+ }
+ }
+ UNLOCK_PROCESS;
+
+ /* to maintain "copy" semantics we check TM now but call later */
+ if (widget->core.tm.translations &&
+ (mask & widget->core.tm.translations->eventMask))
+ call_tm = True;
+
+ cont_to_disp = True;
+ p=widget->core.event_table;
+ if (p) {
+ if (p->next) {
+ XtEventHandler proc[EHSIZE];
+ XtPointer closure[EHSIZE];
+ int numprocs = 0;
+
+ /* Have to copy the procs into an array, because one of them might
+ * call XtRemoveEventHandler, which would break our linked list. */
+
+ for (; p; p = p->next) {
+ if ((!p->has_type_specifier && (mask & p->mask)) ||
+ (p->has_type_specifier && event->type == EXT_TYPE(p))) {
+ if (numprocs >= EHSIZE)
+ break;
+ proc[numprocs] = p->proc;
+ closure[numprocs] = p->closure;
+ numprocs++;
+ }
+ }
+ if (numprocs) {
+ if (p) {
+ cont_to_disp = CallEventHandlers(widget, event, mask);
+ } else {
+ int i;
+ for (i = 0; i < numprocs && cont_to_disp; i++)
+ (*(proc[i]))(widget, closure[i], event, &cont_to_disp);
+/* FUNCTIONS CALLED THROUGH POINTER proc:
+ Selection.c:ReqCleanup,
+ "Shell.c":EventHandler,
+ PassivGrab.c:ActiveHandler,
+ PassivGrab.c:RealizeHandler,
+ Keyboard.c:QueryEventMask,
+ _XtHandleFocus,
+ Selection.c:HandleSelectionReplies,
+ Selection.c:HandleGetIncrement,
+ Selection.c:HandleIncremental,
+ Selection.c:HandlePropertyGone,
+ Selection.c:HandleSelectionEvents
+ */
+ }
+ was_dispatched = True;
+ }
+ } else if ((!p->has_type_specifier && (mask & p->mask)) ||
+ (p->has_type_specifier && event->type == EXT_TYPE(p))) {
+ (*p->proc)(widget, p->closure, event, &cont_to_disp);
+ was_dispatched = True;
+ }
+ }
+ if (call_tm && cont_to_disp)
+ _XtTranslateEvent(widget, event);
+ UNLOCK_APP(app);
+ return (was_dispatched|call_tm);
+}
+
+/*
+ * This structure is passed into the check exposure proc.
+ */
+
+typedef struct _CheckExposeInfo {
+ int type1, type2; /* Types of events to check for. */
+ Boolean maximal; /* Ignore non-exposure events? */
+ Boolean non_matching; /* Was there an event that did not
+ match either type? */
+ Window window; /* Window to match. */
+} CheckExposeInfo;
+
+#define GetCount(ev) (((XExposeEvent *)(ev))->count)
+
+static void SendExposureEvent(XEvent *, Widget, XtPerDisplay);
+static Bool CheckExposureEvent(Display *, XEvent *, char *);
+static void AddExposureToRectangularRegion(XEvent *, Region);
+
+/* Function Name: CompressExposures
+ * Description: Handles all exposure compression
+ * Arguments: event - the xevent that is to be dispatched
+ * widget - the widget that this event occured in.
+ * Returns: none.
+ *
+ * NOTE: Event must be of type Expose or GraphicsExpose.
+ */
+
+static void
+CompressExposures(
+XEvent * event,
+Widget widget)
+{
+ CheckExposeInfo info;
+ int count;
+ Display* dpy = XtDisplay (widget);
+ XtPerDisplay pd = _XtGetPerDisplay(dpy);
+ XtEnum comp_expose;
+ XtEnum comp_expose_type;
+ Boolean no_region;
+
+ LOCK_PROCESS;
+ comp_expose = COMP_EXPOSE;
+ UNLOCK_PROCESS;
+ comp_expose_type = comp_expose & 0x0f;
+ no_region = ((comp_expose & XtExposeNoRegion) ? True : False);
+
+ if (no_region)
+ AddExposureToRectangularRegion(event, pd->region);
+ else
+ XtAddExposureToRegion(event, pd->region);
+
+ if ( GetCount(event) != 0 )
+ return;
+
+ if ((comp_expose_type == XtExposeCompressSeries) ||
+ (XEventsQueued(dpy, QueuedAfterReading) == 0)) {
+ SendExposureEvent(event, widget, pd);
+ return;
+ }
+
+ if (comp_expose & XtExposeGraphicsExposeMerged) {
+ info.type1 = Expose;
+ info.type2 = GraphicsExpose;
+ }
+ else {
+ info.type1 = event->type;
+ info.type2 = 0;
+ }
+ info.maximal = (comp_expose_type == XtExposeCompressMaximal);
+ info.non_matching = FALSE;
+ info.window = XtWindow(widget);
+
+/*
+ * We have to be very careful here not to hose down the processor
+ * when blocking until count gets to zero.
+ *
+ * First, check to see if there are any events in the queue for this
+ * widget, and of the correct type.
+ *
+ * Once we cannot find any more events, check to see that count is zero.
+ * If it is not then block until we get another exposure event.
+ *
+ * If we find no more events, and count on the last one we saw was zero we
+ * we can be sure that all events have been processed.
+ *
+ * Unfortunately, we wind up having to look at the entire queue
+ * event if we're not doing Maximal compression, due to the
+ * semantics of XCheckIfEvent (we can't abort without re-ordering
+ * the event queue as a side-effect).
+ */
+
+ count = 0;
+ while (TRUE) {
+ XEvent event_return;
+
+ if (XCheckIfEvent(dpy, &event_return,
+ CheckExposureEvent, (char *) &info)) {
+
+ count = GetCount(&event_return);
+ if (no_region)
+ AddExposureToRectangularRegion(&event_return, pd->region);
+ else
+ XtAddExposureToRegion(&event_return, pd->region);
+ }
+ else if (count != 0) {
+ XIfEvent(dpy, &event_return,
+ CheckExposureEvent, (char *) &info);
+ count = GetCount(&event_return);
+ if (no_region)
+ AddExposureToRectangularRegion(&event_return, pd->region);
+ else
+ XtAddExposureToRegion(&event_return, pd->region);
+ }
+ else /* count == 0 && XCheckIfEvent Failed. */
+ break;
+ }
+
+ SendExposureEvent(event, widget, pd);
+}
+
+void XtAddExposureToRegion(
+ XEvent *event,
+ Region region)
+{
+ XRectangle rect;
+ XExposeEvent *ev = (XExposeEvent *) event;
+ /* These Expose and GraphicsExpose fields are at identical offsets */
+
+ if (event->type == Expose || event->type == GraphicsExpose) {
+ rect.x = ev->x;
+ rect.y = ev->y;
+ rect.width = ev->width;
+ rect.height = ev->height;
+ XUnionRectWithRegion(&rect, region, region);
+ }
+}
+
+#ifndef MAX
+#define MAX(a,b) (((a) > (b)) ? (a) : (b))
+#endif
+
+#ifndef MIN
+#define MIN(a,b) (((a) < (b)) ? (a) : (b))
+#endif
+
+static void AddExposureToRectangularRegion(
+ XEvent *event, /* when called internally, type is always appropriate */
+ Region region)
+{
+ XRectangle rect;
+ XExposeEvent *ev = (XExposeEvent *) event;
+ /* These Expose and GraphicsExpose fields are at identical offsets */
+
+ rect.x = ev->x;
+ rect.y = ev->y;
+ rect.width = ev->width;
+ rect.height = ev->height;
+
+ if (XEmptyRegion(region)) {
+ XUnionRectWithRegion(&rect, region, region);
+ } else {
+ XRectangle merged, bbox;
+
+ XClipBox(region, &bbox);
+ merged.x = MIN(rect.x, bbox.x);
+ merged.y = MIN(rect.y, bbox.y);
+ merged.width = MAX(rect.x + rect.width,
+ bbox.x + bbox.width) - merged.x;
+ merged.height = MAX(rect.y + rect.height,
+ bbox.y + bbox.height) - merged.y;
+ XUnionRectWithRegion(&merged, region, region);
+ }
+}
+
+static Region nullRegion;
+/* READ-ONLY VARIABLES: nullRegion */
+
+void _XtEventInitialize(void)
+{
+#ifndef __lock_lint
+ nullRegion = XCreateRegion();
+#endif
+}
+
+/* Function Name: SendExposureEvent
+ * Description: Sets the x, y, width, and height of the event
+ * to be the clip box of Expose Region.
+ * Arguments: event - the X Event to mangle; Expose or GraphicsExpose.
+ * widget - the widget that this event occured in.
+ * pd - the per display information for this widget.
+ * Returns: none.
+ */
+
+static void
+SendExposureEvent(
+XEvent * event,
+Widget widget,
+XtPerDisplay pd)
+{
+ XtExposeProc expose;
+ XRectangle rect;
+ XtEnum comp_expose;
+ XExposeEvent *ev = (XExposeEvent *) event;
+
+ XClipBox(pd->region, &rect);
+ ev->x = rect.x;
+ ev->y = rect.y;
+ ev->width = rect.width;
+ ev->height = rect.height;
+
+ LOCK_PROCESS;
+ comp_expose = COMP_EXPOSE;
+ expose = widget->core.widget_class->core_class.expose;
+ UNLOCK_PROCESS;
+ if (comp_expose & XtExposeNoRegion)
+ (*expose)(widget, event, NULL);
+ else
+ (*expose)(widget, event, pd->region);
+ (void) XIntersectRegion(nullRegion, pd->region, pd->region);
+}
+
+/* Function Name: CheckExposureEvent
+ * Description: Checks the event queue for an expose event
+ * Arguments: display - the display connection.
+ * event - the event to check.
+ * arg - a pointer to the exposure info structure.
+ * Returns: TRUE if we found an event of the correct type
+ * with the right window.
+ *
+ * NOTE: The only valid types (info.type1 and info.type2) are Expose
+ * and GraphicsExpose.
+ */
+
+/* ARGSUSED */
+static Bool
+CheckExposureEvent(
+Display * disp,
+XEvent * event,
+char * arg)
+{
+ CheckExposeInfo * info = ((CheckExposeInfo *) arg);
+
+ if ( (info->type1 == event->type) || (info->type2 == event->type)) {
+ if (!info->maximal && info->non_matching) return FALSE;
+ if (event->type == GraphicsExpose)
+ return(event->xgraphicsexpose.drawable == info->window);
+ return(event->xexpose.window == info->window);
+ }
+ info->non_matching = TRUE;
+ return(FALSE);
+}
+
+static EventMask const masks[] = {
+ 0, /* Error, should never see */
+ 0, /* Reply, should never see */
+ KeyPressMask, /* KeyPress */
+ KeyReleaseMask, /* KeyRelease */
+ ButtonPressMask, /* ButtonPress */
+ ButtonReleaseMask, /* ButtonRelease */
+ PointerMotionMask /* MotionNotify */
+ | ButtonMotionMask,
+ EnterWindowMask, /* EnterNotify */
+ LeaveWindowMask, /* LeaveNotify */
+ FocusChangeMask, /* FocusIn */
+ FocusChangeMask, /* FocusOut */
+ KeymapStateMask, /* KeymapNotify */
+ ExposureMask, /* Expose */
+ NonMaskableMask, /* GraphicsExpose, in GC */
+ NonMaskableMask, /* NoExpose, in GC */
+ VisibilityChangeMask, /* VisibilityNotify */
+ SubstructureNotifyMask, /* CreateNotify */
+ StructureNotifyMask /* DestroyNotify */
+ | SubstructureNotifyMask,
+ StructureNotifyMask /* UnmapNotify */
+ | SubstructureNotifyMask,
+ StructureNotifyMask /* MapNotify */
+ | SubstructureNotifyMask,
+ SubstructureRedirectMask, /* MapRequest */
+ StructureNotifyMask /* ReparentNotify */
+ | SubstructureNotifyMask,
+ StructureNotifyMask /* ConfigureNotify */
+ | SubstructureNotifyMask,
+ SubstructureRedirectMask, /* ConfigureRequest */
+ StructureNotifyMask /* GravityNotify */
+ | SubstructureNotifyMask,
+ ResizeRedirectMask, /* ResizeRequest */
+ StructureNotifyMask /* CirculateNotify */
+ | SubstructureNotifyMask,
+ SubstructureRedirectMask, /* CirculateRequest */
+ PropertyChangeMask, /* PropertyNotify */
+ NonMaskableMask, /* SelectionClear */
+ NonMaskableMask, /* SelectionRequest */
+ NonMaskableMask, /* SelectionNotify */
+ ColormapChangeMask, /* ColormapNotify */
+ NonMaskableMask, /* ClientMessage */
+ NonMaskableMask /* MappingNotify */
+};
+
+EventMask _XtConvertTypeToMask (
+ int eventType)
+{
+ if ((Cardinal) eventType < XtNumber(masks))
+ return masks[eventType];
+ else
+ return NoEventMask;
+}
+
+Boolean _XtOnGrabList(
+ register Widget widget,
+ XtGrabRec *grabList)
+{
+ register XtGrabRec* gl;
+ for (; widget != NULL; widget = (Widget)widget->core.parent) {
+ for (gl = grabList; gl != NULL; gl = gl->next) {
+ if (gl->widget == widget) return TRUE;
+ if (gl->exclusive) break;
+ }
+ }
+ return FALSE;
+}
+
+static Widget LookupSpringLoaded(
+ XtGrabList grabList)
+{
+ XtGrabList gl;
+
+ for (gl = grabList; gl != NULL; gl = gl->next) {
+ if (gl->spring_loaded) {
+ if (XtIsSensitive(gl->widget))
+ return gl->widget;
+ else
+ return NULL;
+ }
+ if (gl->exclusive) break;
+ }
+ return NULL;
+}
+
+static Boolean DispatchEvent(
+ XEvent* event,
+ Widget widget)
+{
+
+ if (event->type == EnterNotify &&
+ event->xcrossing.mode == NotifyNormal &&
+ widget->core.widget_class->core_class.compress_enterleave) {
+ if (XPending(event->xcrossing.display)) {
+ XEvent nextEvent;
+ XPeekEvent(event->xcrossing.display, &nextEvent);
+ if (nextEvent.type == LeaveNotify &&
+ event->xcrossing.window == nextEvent.xcrossing.window &&
+ nextEvent.xcrossing.mode == NotifyNormal &&
+ ((event->xcrossing.detail != NotifyInferior &&
+ nextEvent.xcrossing.detail != NotifyInferior) ||
+ (event->xcrossing.detail == NotifyInferior &&
+ nextEvent.xcrossing.detail == NotifyInferior))) {
+ /* skip the enter/leave pair */
+ XNextEvent(event->xcrossing.display, &nextEvent);
+ return False;
+ }
+ }
+ }
+
+ if (event->type == MotionNotify &&
+ widget->core.widget_class->core_class.compress_motion) {
+ while (XPending(event->xmotion.display)) {
+ XEvent nextEvent;
+ XPeekEvent(event->xmotion.display, &nextEvent);
+ if (nextEvent.type == MotionNotify &&
+ event->xmotion.window == nextEvent.xmotion.window &&
+ event->xmotion.subwindow == nextEvent.xmotion.subwindow) {
+ /* replace the current event with the next one */
+ XNextEvent(event->xmotion.display, event);
+ } else break;
+ }
+ }
+
+ return XtDispatchEventToWidget(widget, event);
+}
+
+typedef enum _GrabType {pass, ignore, remap} GrabType;
+
+#if !defined(AIXV3) || !defined(AIXSHLIB)
+static /* AIX shared libraries are broken */
+#endif
+Boolean _XtDefaultDispatcher(
+ XEvent *event)
+{
+ register Widget widget;
+ GrabType grabType;
+ XtPerDisplayInput pdi;
+ XtGrabList grabList;
+ Boolean was_dispatched = False;
+ DPY_TO_APPCON(event->xany.display);
+
+ /* the default dispatcher discards all extension events */
+ if (event->type >= LASTEvent)
+ return False;
+
+ LOCK_APP(app);
+
+ switch (event->type) {
+ case KeyPress:
+ case KeyRelease:
+ case ButtonPress:
+ case ButtonRelease: grabType = remap; break;
+ case MotionNotify:
+ case EnterNotify: grabType = ignore; break;
+ default: grabType = pass; break;
+ }
+
+ widget = XtWindowToWidget (event->xany.display, event->xany.window);
+ pdi = _XtGetPerDisplayInput(event->xany.display);
+ grabList = *_XtGetGrabList(pdi);
+
+ if (widget == NULL) {
+ if (grabType == remap
+ && (widget = LookupSpringLoaded(grabList)) != NULL) {
+ /* event occurred in a non-widget window, but we've promised also
+ to dispatch it to the nearest accessible spring_loaded widget */
+ was_dispatched = (XFilterEvent(event, XtWindow(widget))
+ || XtDispatchEventToWidget(widget, event));
+ }
+ else was_dispatched = XFilterEvent(event, None);
+ }
+ else if (grabType == pass) {
+ if (event->type == LeaveNotify ||
+ event->type == FocusIn ||
+ event->type == FocusOut) {
+ if (XtIsSensitive (widget))
+ was_dispatched = (XFilterEvent(event, XtWindow(widget)) ||
+ XtDispatchEventToWidget(widget, event));
+ } else was_dispatched = (XFilterEvent(event, XtWindow(widget)) ||
+ XtDispatchEventToWidget(widget, event));
+ }
+ else if (grabType == ignore) {
+ if ((grabList == NULL || _XtOnGrabList(widget, grabList))
+ && XtIsSensitive(widget)) {
+ was_dispatched = (XFilterEvent(event, XtWindow(widget))
+ || DispatchEvent(event, widget));
+ }
+ }
+ else if (grabType == remap) {
+ EventMask mask = _XtConvertTypeToMask(event->type);
+ Widget dspWidget;
+ Boolean was_filtered = False;
+
+ dspWidget = _XtFindRemapWidget(event, widget, mask, pdi);
+
+ if ((grabList == NULL ||_XtOnGrabList(dspWidget, grabList))
+ && XtIsSensitive(dspWidget)) {
+ if ((was_filtered = XFilterEvent(event, XtWindow(dspWidget)))) {
+ /* If this event activated a device grab, release it. */
+ _XtUngrabBadGrabs(event, widget, mask, pdi);
+ was_dispatched = True;
+ } else
+ was_dispatched = XtDispatchEventToWidget(dspWidget, event);
+ }
+ else _XtUngrabBadGrabs(event, widget, mask, pdi);
+
+ if (!was_filtered) {
+ /* Also dispatch to nearest accessible spring_loaded. */
+ /* Fetch this afterward to reflect modal list changes */
+ grabList = *_XtGetGrabList(pdi);
+ widget = LookupSpringLoaded(grabList);
+ if (widget != NULL && widget != dspWidget) {
+ was_dispatched = (XFilterEvent(event, XtWindow(widget))
+ || XtDispatchEventToWidget(widget, event)
+ || was_dispatched);
+ }
+ }
+ }
+ UNLOCK_APP(app);
+ return was_dispatched;
+}
+
+Boolean XtDispatchEvent (
+ XEvent *event)
+{
+ Boolean was_dispatched, safe;
+ int dispatch_level;
+ int starting_count;
+ XtPerDisplay pd;
+ Time time = 0;
+ XtEventDispatchProc dispatch = _XtDefaultDispatcher;
+ XtAppContext app = XtDisplayToApplicationContext(event->xany.display);
+
+ LOCK_APP(app);
+ dispatch_level = ++app->dispatch_level;
+ starting_count = app->destroy_count;
+
+ switch (event->type) {
+ case KeyPress:
+ case KeyRelease: time = event->xkey.time; break;
+ case ButtonPress:
+ case ButtonRelease: time = event->xbutton.time; break;
+ case MotionNotify: time = event->xmotion.time; break;
+ case EnterNotify:
+ case LeaveNotify: time = event->xcrossing.time; break;
+ case PropertyNotify: time = event->xproperty.time; break;
+ case SelectionClear: time = event->xselectionclear.time; break;
+
+ case MappingNotify: _XtRefreshMapping(event, True); break;
+ }
+ pd = _XtGetPerDisplay(event->xany.display);
+ if (time) pd->last_timestamp = time;
+ pd->last_event = *event;
+
+ if (pd->dispatcher_list) {
+ dispatch = pd->dispatcher_list[event->type];
+ if (dispatch == NULL) dispatch = _XtDefaultDispatcher;
+ }
+ was_dispatched = (*dispatch)(event);
+
+ /*
+ * To make recursive XtDispatchEvent work, we need to do phase 2 destroys
+ * only on those widgets destroyed by this particular dispatch.
+ *
+ */
+
+ if (app->destroy_count > starting_count)
+ _XtDoPhase2Destroy(app, dispatch_level);
+
+ app->dispatch_level = dispatch_level - 1;
+
+ if ((safe = _XtSafeToDestroy(app))) {
+ if (app->dpy_destroy_count != 0) _XtCloseDisplays(app);
+ if (app->free_bindings) _XtDoFreeBindings(app);
+ }
+ UNLOCK_APP(app);
+ LOCK_PROCESS;
+ if (_XtAppDestroyCount != 0 && safe) _XtDestroyAppContexts();
+ UNLOCK_PROCESS;
+ return was_dispatched;
+}
+
+/* ARGSUSED */
+static void GrabDestroyCallback(
+ Widget widget,
+ XtPointer closure,
+ XtPointer call_data)
+{
+ /* Remove widget from grab list if it destroyed */
+ XtRemoveGrab(widget);
+}
+
+static XtGrabRec *NewGrabRec(
+ Widget widget,
+ Boolean exclusive,
+ Boolean spring_loaded)
+{
+ register XtGrabList gl;
+
+ gl = XtNew(XtGrabRec);
+ gl->next = NULL;
+ gl->widget = widget;
+ gl->exclusive = exclusive;
+ gl->spring_loaded = spring_loaded;
+
+ return gl;
+}
+
+void XtAddGrab(
+ Widget widget,
+ _XtBoolean exclusive,
+ _XtBoolean spring_loaded)
+{
+ register XtGrabList gl;
+ XtGrabList *grabListPtr;
+ XtAppContext app = XtWidgetToApplicationContext(widget);
+
+ LOCK_APP(app);
+ LOCK_PROCESS;
+ grabListPtr = _XtGetGrabList(_XtGetPerDisplayInput(XtDisplay(widget)));
+
+ if (spring_loaded && !exclusive) {
+ XtAppWarningMsg(app,
+ "grabError", "xtAddGrab", XtCXtToolkitError,
+ "XtAddGrab requires exclusive grab if spring_loaded is TRUE",
+ (String *) NULL, (Cardinal *) NULL);
+ exclusive = TRUE;
+ }
+
+ gl = NewGrabRec(widget, exclusive, spring_loaded);
+ gl->next = *grabListPtr;
+ *grabListPtr = gl;
+
+ XtAddCallback (widget, XtNdestroyCallback,
+ GrabDestroyCallback, (XtPointer) NULL);
+ UNLOCK_PROCESS;
+ UNLOCK_APP(app);
+}
+
+void XtRemoveGrab(
+ Widget widget)
+{
+ register XtGrabList gl;
+ register Boolean done;
+ XtGrabList *grabListPtr;
+ XtAppContext app = XtWidgetToApplicationContext(widget);
+
+ LOCK_APP(app);
+ LOCK_PROCESS;
+
+ grabListPtr = _XtGetGrabList(_XtGetPerDisplayInput(XtDisplay(widget)));
+
+ for (gl = *grabListPtr; gl != NULL; gl = gl->next) {
+ if (gl->widget == widget) break;
+ }
+
+ if (gl == NULL) {
+ XtAppWarningMsg(app,
+ "grabError","xtRemoveGrab",XtCXtToolkitError,
+ "XtRemoveGrab asked to remove a widget not on the list",
+ (String *)NULL, (Cardinal *)NULL);
+ UNLOCK_PROCESS;
+ UNLOCK_APP(app);
+ return;
+ }
+
+ do {
+ gl = *grabListPtr;
+ done = (gl->widget == widget);
+ *grabListPtr = gl->next;
+ XtRemoveCallback(gl->widget, XtNdestroyCallback,
+ GrabDestroyCallback, (XtPointer)NULL);
+ XtFree((char *)gl);
+ } while (! done);
+ UNLOCK_PROCESS;
+ UNLOCK_APP(app);
+ return;
+}
+
+void XtMainLoop(void)
+{
+ XtAppMainLoop(_XtDefaultAppContext());
+}
+
+void XtAppMainLoop(
+ XtAppContext app)
+{
+ XEvent event;
+
+ LOCK_APP(app);
+ do {
+ XtAppNextEvent(app, &event);
+#ifdef XTHREADS
+ /* assert(app == XtDisplayToApplicationContext(event.xany.display)); */
+#endif
+ XtDispatchEvent(&event);
+ } while(app->exit_flag == FALSE);
+ UNLOCK_APP(app);
+}
+
+void _XtFreeEventTable(
+ XtEventTable *event_table)
+{
+ register XtEventTable event;
+
+ event = *event_table;
+ while (event != NULL) {
+ register XtEventTable next = event->next;
+ XtFree((char *) event);
+ event = next;
+ }
+}
+
+Time XtLastTimestampProcessed(
+ Display *dpy)
+{
+ Time time;
+ DPY_TO_APPCON(dpy);
+
+ LOCK_APP(app);
+ LOCK_PROCESS;
+ time = _XtGetPerDisplay(dpy)->last_timestamp;
+ UNLOCK_PROCESS;
+ UNLOCK_APP(app);
+ return(time);
+}
+
+XEvent* XtLastEventProcessed(
+ Display* dpy)
+{
+ XEvent* le = NULL;
+ DPY_TO_APPCON(dpy);
+
+ LOCK_APP(app);
+ le = &_XtGetPerDisplay(dpy)->last_event;
+ if (!le->xany.serial)
+ le = NULL;
+ UNLOCK_APP(app);
+ return le;
+}
+
+void _XtSendFocusEvent(
+ Widget child,
+ int type)
+{
+ child = XtIsWidget(child) ? child : _XtWindowedAncestor(child);
+ if (XtIsSensitive(child) && !child->core.being_destroyed
+ && XtIsRealized(child)
+ && (XtBuildEventMask(child) & FocusChangeMask))
+ {
+ XFocusChangeEvent event;
+ Display* dpy = XtDisplay (child);
+
+ event.type = type;
+ event.serial = LastKnownRequestProcessed(dpy);
+ event.send_event = True;
+ event.display = dpy;
+ event.window = XtWindow(child);
+ event.mode = NotifyNormal;
+ event.detail = NotifyAncestor;
+ if (XFilterEvent((XEvent*)&event, XtWindow(child)))
+ return;
+ XtDispatchEventToWidget(child, (XEvent*)&event);
+ }
+}
+
+static XtEventDispatchProc* NewDispatcherList(void)
+{
+ XtEventDispatchProc* l =
+ (XtEventDispatchProc*) __XtCalloc((Cardinal) 128,
+ (Cardinal)sizeof(XtEventDispatchProc));
+ return l;
+}
+
+XtEventDispatchProc XtSetEventDispatcher(
+ Display *dpy,
+ int event_type,
+ XtEventDispatchProc proc)
+{
+ XtEventDispatchProc *list;
+ XtEventDispatchProc old_proc;
+ register XtPerDisplay pd;
+ DPY_TO_APPCON(dpy);
+
+ LOCK_APP(app);
+ LOCK_PROCESS;
+ pd = _XtGetPerDisplay(dpy);
+
+ list = pd->dispatcher_list;
+ if (!list) {
+ if (proc) list = pd->dispatcher_list = NewDispatcherList();
+ else return _XtDefaultDispatcher;
+ }
+ old_proc = list[event_type];
+ list[event_type] = proc;
+ if (old_proc == NULL) old_proc = _XtDefaultDispatcher;
+ UNLOCK_PROCESS;
+ UNLOCK_APP(app);
+ return old_proc;
+}
+
+void XtRegisterExtensionSelector(
+ Display *dpy,
+ int min_event_type,
+ int max_event_type,
+ XtExtensionSelectProc proc,
+ XtPointer client_data)
+{
+ ExtSelectRec *e;
+ XtPerDisplay pd;
+ int i;
+ DPY_TO_APPCON(dpy);
+
+ if (dpy == NULL) XtErrorMsg("nullDisplay",
+ "xtRegisterExtensionSelector", XtCXtToolkitError,
+ "XtRegisterExtensionSelector requires a non-NULL display",
+ (String *) NULL, (Cardinal *) NULL);
+
+ LOCK_APP(app);
+ LOCK_PROCESS;
+ pd = _XtGetPerDisplay(dpy);
+
+ for (i = 0; i < pd->ext_select_count; i++) {
+ e = &pd->ext_select_list[i];
+ if (e->min == min_event_type && e->max == max_event_type) {
+ e->proc = proc;
+ e->client_data = client_data;
+ return;
+ }
+ if ((min_event_type >= e->min && min_event_type <= e->max) ||
+ (max_event_type >= e->min && max_event_type <= e->max)) {
+ XtErrorMsg("rangeError", "xtRegisterExtensionSelector",
+ XtCXtToolkitError,
+ "Attempt to register multiple selectors for one extension event type",
+ (String *) NULL, (Cardinal *) NULL);
+ UNLOCK_PROCESS;
+ UNLOCK_APP(app);
+ return;
+ }
+ }
+ pd->ext_select_count++;
+ pd->ext_select_list =
+ (ExtSelectRec *) XtRealloc((char *) pd->ext_select_list,
+ pd->ext_select_count * sizeof(ExtSelectRec));
+ for (i = pd->ext_select_count - 1; i > 0; i--) {
+ if (pd->ext_select_list[i-1].min > min_event_type) {
+ pd->ext_select_list[i] = pd->ext_select_list[i-1];
+ } else break;
+ }
+ pd->ext_select_list[i].min = min_event_type;
+ pd->ext_select_list[i].max = max_event_type;
+ pd->ext_select_list[i].proc = proc;
+ pd->ext_select_list[i].client_data = client_data;
+ UNLOCK_PROCESS;
+ UNLOCK_APP(app);
+}
+
+void _XtExtensionSelect(
+ Widget widget)
+{
+ int i;
+ XtPerDisplay pd;
+ WIDGET_TO_APPCON(widget);
+
+ LOCK_APP(app);
+ LOCK_PROCESS;
+
+ pd = _XtGetPerDisplay(XtDisplay(widget));
+
+ for (i = 0; i < pd->ext_select_count; i++) {
+ CallExtensionSelector(widget, pd->ext_select_list+i, FALSE);
+ }
+ UNLOCK_PROCESS;
+ UNLOCK_APP(app);
+}