R6.6 is the Xorg base-lineXORG-MAIN

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diff --git a/src/Composite.c b/src/Composite.c
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+++ b/src/Composite.c
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+/* $Xorg: Composite.c,v 1.4 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.
+
+*/
+
+#define COMPOSITE
+#include "IntrinsicI.h"
+#include "StringDefs.h"
+
+static XtResource resources[] = {
+    {XtNchildren, XtCReadOnly, XtRWidgetList, sizeof(WidgetList),
+     XtOffsetOf(CompositeRec, composite.children), XtRImmediate, NULL},
+    {XtNnumChildren, XtCReadOnly, XtRCardinal, sizeof(Cardinal),
+     XtOffsetOf(CompositeRec, composite.num_children), XtRImmediate, 0},
+    {XtNinsertPosition, XtCInsertPosition, XtRFunction, sizeof(XtOrderProc),
+     XtOffsetOf(CompositeRec, composite.insert_position), XtRImmediate, NULL},
+};
+
+static void CompositeClassPartInitialize();
+static void CompositeInitialize();
+static void CompositeInsertChild();
+static void CompositeDeleteChild();
+static void CompositeDestroy();
+
+externaldef(compositeclassrec) CompositeClassRec compositeClassRec = {
+  { /******* CorePart *******/
+    /* superclass	    */	&widgetClassRec,
+    /* class_name	    */	"Composite",
+    /* widget_size	    */	sizeof(CompositeRec),
+    /* class_initialize     */  NULL,
+    /* class_part_initialize*/	CompositeClassPartInitialize,
+    /* class_inited	    */	FALSE,
+    /* initialize	    */	CompositeInitialize,
+    /* initialize_hook      */	NULL,		
+    /* realize		    */	XtInheritRealize,
+    /* actions		    */	NULL,
+    /* num_actions	    */	0,
+    /* resources	    */	resources,
+    /* num_resources	    */	XtNumber(resources),
+    /* xrm_class	    */	NULLQUARK,
+    /* compress_motion      */	FALSE,
+    /* compress_exposure    */	TRUE,
+    /* compress_enterleave  */  FALSE,
+    /* visible_interest     */	FALSE,
+    /* destroy		    */	CompositeDestroy,
+    /* resize		    */	NULL,
+    /* expose		    */	NULL,
+    /* set_values	    */	NULL,
+    /* set_values_hook      */	NULL,			
+    /* set_values_almost    */	XtInheritSetValuesAlmost,  
+    /* get_values_hook      */	NULL,			
+    /* accept_focus	    */	NULL,
+    /* version		    */	XtVersion,
+    /* callback_offsets     */  NULL,
+    /* tm_table		    */  NULL,
+    /* query_geometry	    */  NULL,
+    /* display_accelerator  */	NULL,
+    /* extension	    */  NULL
+  },
+  { /**** CompositePart *****/
+    /* geometry_handler     */  NULL,
+    /* change_managed       */  NULL,
+    /* insert_child	    */  CompositeInsertChild,
+    /* delete_child	    */  CompositeDeleteChild,
+    /* extension	    */  NULL
+    }
+};
+
+externaldef(compositewidgetclass) WidgetClass compositeWidgetClass = (WidgetClass) &compositeClassRec;
+
+static void InheritAllowsChangeManagedSet(widget_class)
+    WidgetClass widget_class;
+{
+    CompositeWidgetClass cc = (CompositeWidgetClass) widget_class;
+    CompositeClassExtension ext, super_ext, new_ext;
+
+    ext = (CompositeClassExtension)
+	XtGetClassExtension(widget_class,
+		    XtOffsetOf(CompositeClassRec, composite_class.extension),
+			    NULLQUARK, 1L, 0);
+
+    if (ext && ext->version == XtCompositeExtensionVersion)
+	return;
+
+    super_ext = (CompositeClassExtension)
+	XtGetClassExtension(cc->core_class.superclass,
+		    XtOffsetOf(CompositeClassRec, composite_class.extension),
+			    NULLQUARK, 1L, 0);
+
+    LOCK_PROCESS;
+    if (super_ext && super_ext->version == XtCompositeExtensionVersion &&
+	super_ext->record_size == sizeof(CompositeClassExtensionRec) &&
+	super_ext->allows_change_managed_set) {
+
+	new_ext = (CompositeClassExtension) 
+	    __XtCalloc(1, sizeof(CompositeClassExtensionRec));
+
+	/* Be careful to inherit only what is appropriate */
+	new_ext->next_extension = cc->composite_class.extension;
+	new_ext->record_type = NULLQUARK;
+	new_ext->version = XtCompositeExtensionVersion;
+	new_ext->record_size = sizeof(CompositeClassExtensionRec);
+	new_ext->accepts_objects = (ext ? ext->accepts_objects : False);
+	new_ext->allows_change_managed_set = True;
+	cc->composite_class.extension = (XtPointer) new_ext;
+    }
+    UNLOCK_PROCESS;
+}
+
+static void CompositeClassPartInitialize(widgetClass)
+	WidgetClass widgetClass;
+{
+    register CompositePartPtr wcPtr;
+    register CompositePartPtr superPtr;
+
+    wcPtr = (CompositePartPtr)
+	&(((CompositeWidgetClass)widgetClass)->composite_class);
+
+    if (widgetClass != compositeWidgetClass)
+	/* don't compute possible bogus pointer */
+	superPtr = (CompositePartPtr)&(((CompositeWidgetClass)widgetClass
+			->core_class.superclass)->composite_class);
+#ifdef lint
+    else
+	superPtr = NULL;
+#endif
+
+    /* We don't need to check for null super since we'll get to composite
+       eventually, and it had better define them!  */
+
+    LOCK_PROCESS;
+    if (wcPtr->geometry_manager == XtInheritGeometryManager) {
+	wcPtr->geometry_manager =
+		superPtr->geometry_manager;
+    }
+
+    if (wcPtr->change_managed == XtInheritChangeManaged) {
+	wcPtr->change_managed =
+		superPtr->change_managed;
+	InheritAllowsChangeManagedSet(widgetClass);
+    }
+
+    if (wcPtr->insert_child == XtInheritInsertChild) {
+	wcPtr->insert_child = superPtr->insert_child;
+    }
+
+    if (wcPtr->delete_child == XtInheritDeleteChild) {
+	wcPtr->delete_child = superPtr->delete_child;
+    }
+    UNLOCK_PROCESS;
+}
+
+static void CompositeDestroy(w)
+    Widget	w;
+{
+    register CompositeWidget cw = (CompositeWidget) w;
+
+    XtFree((char *) cw->composite.children);
+}
+
+static void CompositeInsertChild(w)
+    Widget	w;
+{
+    register Cardinal	     position;
+    register Cardinal        i;
+    register CompositeWidget cw;
+    register WidgetList      children;
+
+    cw = (CompositeWidget) w->core.parent;
+    children = cw->composite.children;
+
+    if (cw->composite.insert_position != NULL)
+	position = (*(cw->composite.insert_position))(w);
+    else
+	position = cw->composite.num_children;
+
+    if (cw->composite.num_children == cw->composite.num_slots) {
+	/* Allocate more space */
+	cw->composite.num_slots +=  (cw->composite.num_slots / 2) + 2;
+	cw->composite.children = children = 
+	    (WidgetList) XtRealloc((XtPointer) children,
+	    (unsigned) (cw->composite.num_slots) * sizeof(Widget));
+    }
+    /* Ripple children up one space from "position" */
+    for (i = cw->composite.num_children; i > position; i--) {
+	children[i] = children[i-1];
+    }
+    children[position] = w;
+    cw->composite.num_children++;
+}
+
+static void CompositeDeleteChild(w)
+    Widget	w;
+{
+    register Cardinal	     position;
+    register Cardinal	     i;
+    register CompositeWidget cw;
+
+    cw = (CompositeWidget) w->core.parent;
+
+    for (position = 0; position < cw->composite.num_children; position++) {
+        if (cw->composite.children[position] == w) {
+	    break;
+	}
+    }
+    if (position == cw->composite.num_children) return;
+
+    /* Ripple children down one space from "position" */
+    cw->composite.num_children--;
+    for (i = position; i < cw->composite.num_children; i++) {
+        cw->composite.children[i] = cw->composite.children[i+1];
+    }
+}
+
+/* ARGSUSED */
+static void CompositeInitialize(requested_widget, new_widget, args, num_args)
+    Widget   new_widget, requested_widget;
+    ArgList args;
+    Cardinal *num_args;
+{
+    register CompositeWidget cw;
+
+    cw = (CompositeWidget) new_widget;
+    cw->composite.num_children = 0;
+    cw->composite.children = NULL;
+    cw->composite.num_slots = 0;
+}