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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.
+
+*/
+/* $XFree86: xc/lib/Xt/Composite.c,v 1.5 2001/08/22 22:52:17 dawes Exp $ */
+
+#define XT_COMPOSITE
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#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(WidgetClass);
+static void CompositeInitialize(Widget, Widget, ArgList, Cardinal *);
+static void CompositeInsertChild(Widget);
+static void CompositeDeleteChild(Widget);
+static void CompositeDestroy(Widget);
+
+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(
+ 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)
+{
+ register CompositePartPtr wcPtr;
+ register CompositePartPtr superPtr = NULL;
+
+ wcPtr = (CompositePartPtr)
+ &(((CompositeWidgetClass)widgetClass)->composite_class);
+
+ if (widgetClass != compositeWidgetClass)
+ /* don't compute possible bogus pointer */
+ superPtr = (CompositePartPtr)&(((CompositeWidgetClass)widgetClass
+ ->core_class.superclass)->composite_class);
+
+ /* 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(
+ Widget w)
+{
+ register CompositeWidget cw = (CompositeWidget) w;
+
+ XtFree((char *) cw->composite.children);
+}
+
+static void CompositeInsertChild(
+ 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(
+ 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(
+ Widget requested_widget,
+ Widget new_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;
+}
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